(19)
(11)EP 2 518 490 B1

(12)EUROPEAN PATENT SPECIFICATION

(45)Mention of the grant of the patent:
04.09.2019 Bulletin 2019/36

(21)Application number: 10839261.4

(22)Date of filing:  15.12.2010
(51)International Patent Classification (IPC): 
G01N 33/00(2006.01)
B01F 15/00(2006.01)
G01N 27/416(2006.01)
B01F 13/08(2006.01)
(86)International application number:
PCT/JP2010/072540
(87)International publication number:
WO 2011/078028 (30.06.2011 Gazette  2011/26)

(54)

LIQUID CHARACTERISTIC ANALYZING APPARATUS

VORRICHTUNG ZUR ANALYSE VON FLÜSSIGKEITSEIGENSCHAFTEN

APPAREIL ANALYSANT LES CARACTÉRISTIQUES D'UN LIQUIDE


(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30)Priority: 25.12.2009 JP 2009295404

(43)Date of publication of application:
31.10.2012 Bulletin 2012/44

(73)Proprietor: Horiba, Ltd.
Kyoto-shi, Kyoto 601-8510 (JP)

(72)Inventors:
  • EHARA, Katsunobu
    Kyoto-shi, Kyoto 601-8510 (JP)
  • TARUI, Yoshihiro
    Kyoto-shi, Kyoto 601-8510 (JP)

(74)Representative: Müller Hoffmann & Partner 
Patentanwälte mbB St.-Martin-Strasse 58
81541 München
81541 München (DE)


(56)References cited: : 
EP-A1- 1 243 315
WO-A2-02/26386
WO-A2-2007/134267
FR-A1- 2 927 266
JP-A- 2008 206 987
US-A- 6 057 773
WO-A1-00/79243
WO-A2-2007/005782
DE-A1-102005 046 283
JP-A- 2005 526 332
JP-A- 2009 273 893
  
  • JOSE L. GONZALEZ-GUILLAUMIN ET AL.: 'Ingestible Capsule for Impedance and pH Monitering in the Esophagus' IEEE TRANS BIOMED ENG vol. 54, no. 12, December 2007, pages 2231 - 2236, XP009095051
  
Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).


Description

Technical Field



[0001] The present invention relates to a liquid characteristic analyzing apparatus including a stirrer that detects characteristics of liquid in a container and makes wireless communication of a result of the detection through an electromagnetic wave signal or the like.

Background art



[0002] Liquid characteristic analyzing apparatuses include various types, and one of them is a pH meter. A pH meter disclosed in, for example, Patent literature 1 is configured such that a columnar electrode attached with a sensor part is immersed in liquid to measure pH, and a pH meter main body that is connected to the electrode through a signal cable displays a result of the measurement.

[0003] In the case of using the pH meter to measure some liquid of which an amount is gradually increased by being added with another liquid, such as a buffer (buffer solution) in preparation, the electrode is adapted to gradually rise in level as a level of the liquid is raised. This is because a fore end part of the electrode is required to be immersed in the liquid in order to make the measurement, whereas a base end part of the electrode is required not to come into contact with the liquid in order to prevent the liquid from intruding.

Citation List


Patent Literature



[0004] 

Patent literature 1: JPA 2009-156670

Patent literature 2: JPA 2002-014072


Summary of Invention


Technical Problem



[0005] However, it takes time and effort to adjust the level of the electrode, which becomes a factor preventing quick measurement. Specifically, when the liquid amount is small, the electrode is leaned in a container containing the liquid; when the liquid amount reaches a constant or more, the electrode is attached to an arm; and when the liquid amount is further increased, a height of the arm is adjusted or the arm is replaced to thereby adjust the level of the electrode.

[0006] On the other hand, as disclosed in Patent literature 2, a system that brings a sensor chip attached with a sensor part into contact with gas to detect a change in characteristics of the gas, and transmits a result of the detection to an external device through an electromagnetic wave signal to measure the characteristics of the gas is developed. However, in the case of attempting to use the system to measure characteristics of liquid, a transmitted electromagnetic wave signal attenuates in the liquid, which makes wireless communication impossible and consequently makes the measurement of the liquid characteristics difficult.

[0007] EP 1 243 315 A1 discloses a stirrer for stirring a substance, the stirrer comprising a stirring device and a powering device, the stirring device being adapted to be submerged in the substance for making a stirring movement, the powering device by a first field contactlessly applying a force onto the stirring device for powering the stirring movement of the stirring device, whereby the stirring device comprises a sensing device for measuring at least one parameter of the substance. Further, the invention comprises a stirring device for use in such stirrer, a stirring apparatus and a module for measuring a parameter of a substance surrounding the module. Still further, the invention comprises a use of such stirring device and a method for measuring a parameter of a substance being stirred by a stirring device.

[0008] In WO 2007/134267 A2, a disposable material processing apparatus, useable as a bioreactor or fermenter, including a hollow tank and a mixing paddle disposed within the interior of the tank and adapted to mix contents therein is disclosed. The paddle may be isolated within a flexible sleeve. Various functional elements, such as a sparger, sensor, material extraction conduit, material addition conduit, and/or heat exchange element may be provided, and optionally arranged to travel with the paddle within the tank interior. Baffles may protrude into a mixing tank to enhance mixing. A tank and/or sleeve may comprise

[0009] WO 00/79243 A1 discloses a distributed sensing system in a networked environment for identifying an analyte of interest, including a first sensor array (fixed or mobile) connected to the network comprising sensors capable of producing a first response in the presence of a chemical stimulus; a second sensor array (fixed) connected to the network comprising sensors capable of producing a second response in the presence of a physical stimulus; and a local or remote computer comprising a resident algorithm with data processing, data comparison, and judgement making capability. The algorithm indicates or selects the most relevant sensor in the network to identify the analyte. The sensors in the two arrays can be separated over large spatial areas and may be networked together by a suitable network such as a computer local area network (LAN), an intranet or the Internet (www).

[0010] WO 02/26386 relates to an assembly of an integrated vessel transporter and a reaction vessel as well as to an integrated vessel transporter for transporting a chemical substance. DE 10 2005 046 283 A1 discloses an electric kitchen stove with a "smart" stirring unit for cook wear. US 6,057,773 relates to a device and method for sensing fluid characteristics.

[0011] Therefore, the present invention is made in order to solve the above-described problems at once, and a main desired object thereof is to provide a liquid characteristic analyzing apparatus that can, without attenuation of an electromagnetic wave signal in liquid, certainly make wireless communication, and also simply and quickly measure characteristics of the liquid.

[0012] The above objects are solved by the claimed matter according to the independent claim.

Solution to Problem



[0013] That is, a stirrer according to the independent claim, is provided with: a sensor part that is configured to bring a sensor surface into contact with the liquid to detect the characteristics of the liquid, and outputs an electrical signal having a value corresponding to a detected value; a transmission part that is configured to convert the electrical signal to an electromagnetic wave signal, and wirelessly is configured to output the electromagnetic wave signal; a containing body that has a structure that exposes the sensor surface, contains the sensor part and the transmission part in an inside of the structure, and prevents the liquid from intruding into the inside, and is configured to be arranged in the container and immersed in the liquid; and close contact means is configured to bring a passing portion for the electromagnetic wave signal in the containing body into substantially close contact with an inner wall of the container. In addition, the characteristics of the liquid include, for example, chemical characteristics, physical characteristics, electrical characteristics, and optical characteristics, and more specifically, include pH, residual chlorine concentration, temperature, concentration, viscosity, flow rate, pressure, conductivity, absorbance, and the like. Further, the electromagnetic wave signal may be replaced by a sound wave signal.

[0014] According to the independent claim, because the containing body has the waterproof structure, a whole of the containing body can be immersed in the liquid, and even if a level of the liquid is raised, it is not necessary to adjust a level of the containing body, so that the characteristics of the liquid can be simply and quickly analyzed. Further, the close contact means is configured to bring the passing portion for the electromagnetic wave signal in the containing body into substantially close contact with the inner wall of the container, and therefore without attenuation of the electromagnetic wave signal in the liquid, wireless communication can be certainly made.

[0015] If the close contact means is one adapted to bring the electromagnetic wave signal passing portion of the containing body into substantially close contact with a bottom surface inner wall of the container, the containing body is configured to be arranged at the bottom of the container, so that the sensor surface can be positioned as low as possible, and therefore even if an amount of the liquid is small, the analysis can be made.

[0016] In order to use a simple structure to easily bring the containing body into close contact, desirably, the close contact means is one provided with: a first magnetic part that is provided in the containing body; and a second magnetic part that is arranged outside the container, and is configured to, by magnetic force generated between the respective magnetic parts, attract and bring the electromagnetic wave signal passing portion of the containing body to and into substantially close contact with the inner wall of the container.

[0017] If the second magnetic part is provided in a mounting table for mounting the container; and the containing body in the container is configured to rotate on a basis of a change in magnetic force of the second magnetic part, the containing body can double as means adapted to stir the liquid.

[0018] In order to certainly make the wireless communication even during the rotation of the containing body, desirably, the passing portion is set on a rotational axis of the containing body.

[0019] If the liquid characteristic analyzing apparatus is further provided with a reception part that is arranged outside the container and receives the electromagnetic wave signal from the transmission part, wherein the reception part is provided in a portion that is in the mounting table and faces to the passing portion, the wireless communication can be more certainly made.

[0020] In order to facilitate downsizing, desirably, the mounting table is provided with a display part that displays an analysis result.

[0021] The electromagnetic wave signal may be an infrared signal. If so, a measurement result from the sensor part can be transmitted by means of, for example, modulation (such as frequency modulation or amplitude modulation) of the infrared signal, whereas by means of intensity attenuation of the infrared signal, temperature can be measured. If such a configuration is employed, in addition to improvement of measurement accuracy by temperature compensation, a reduction in the number of parts and downsizing of the containing body can be achieved because it is not necessary to provide the containing body with a temperature sensor.

[0022] According to the independent claim, the stirrer is adapted such that a surface of the containing body is provided with a concave portion, and the sensor surface is exposed in the concave portion, such that liquid can be scooped with the concave portion or dropped into the concave portion to thereby make the analysis even if an amount of the liquid is extremely small.

[0023] If the containing body is configured to be separable into a first unit provided with the sensor part and a second unit provided with the transmission part, any one of the sensor part and the transmission part can be easily replaced as necessary, whereas a part not replaced can be continuously used, and therefore cost at the time of replacement can be reduced.

[0024] The present invention concerns a stirrer, according to claim 1, that is configured to rotate in a container to stir liquid in the container and is provided with a sensor part that is configured to bring a sensor surface into contact with the liquid to detect characteristics of the liquid.

Advantageous Effects of Invention



[0025] According to the present invention configured as described, wireless communication can be certainly made without attenuation of an electromagnetic wave signal in liquid, and also characteristics of the liquid can be simply and quickly measured.

Brief Description of Drawings



[0026] 

Fig. 1 is an overall perspective view illustrating a liquid characteristic analyzing apparatus in an example.

Fig. 2 is a schematic configuration diagram of the liquid characteristic analyzing apparatus in an example/ embodiment.

Fig. 3 is a functional configuration diagram of the liquid characteristic analyzing apparatus in an example/ embodiment.

Fig. 4 is a diagram illustrating a configuration of a containing body in the embodiment of the present invention.

Fig. 5 is an overall perspective view illustrating a liquid characteristic analyzing apparatus in another embodiment of the present invention.


Description of Examples and Embodiments



[0027]  In the following, one example and one embodiment of the present invention are described with reference to the drawings.

<Example>



[0028] A liquid characteristic analyzing apparatus 100 according to the present example is one that measures pH of a buffer (buffer solution) in preparation, and as illustrated in Fig. 1, provided with: a containing body 10 that is arranged in a container B and immersed in liquid; and a mounting table 20 for mounting the container B. The respective parts are described in detail below.

[0029] The containing body 10 is one that, as illustrated in Fig. 2 or another drawing, contains inside: a sensor part 1 that exposes only sensor surfaces 1c and 1d and is provided with electrodes 1a and 1b respectively having the sensor surfaces 1c and 1d; and a transmission part 2, and has a structure that prevents liquid from intruding inside, i.e., here, a cylindrical shape that is made of a material transmitting an infrared signal is transmitted and has both ends closed. In addition, a shape of the containing body 10 may be, besides the cylindrical shape, a capsule shape, a rectangular parallelepiped shape, or the like, and in short, the shape is only required to be a shape that can rotate in the container B to stir the liquid.

[0030] The sensor part 1 is one that, as illustrated in Fig. 2 or another drawing, brings the sensor surfaces 1c and 1d into contact with the liquid to thereby detect characteristics (here, pH) of the liquid, and outputs an electrical signal having a value corresponding to the detected value, and provided with the working electrode 1a having the sensor surface 1c and the reference electrode 1b having the sensor surface 1d. The respective electrodes 1a and 1b are configured to be separable, and when performance of each of the electrodes 1a and 1b deteriorates, or in another case, it can be replaced. From one end of the containing body 10, the sensor surface 1c of the working electrode 1a is exposed, and from the other end, the sensor surface 1d of the reference electrode 1b is exposed. In addition, as the working electrode 1a, for example, an ISFET (ion-sensitive field effect transistor), a glass electrode, or the like is cited.

[0031] The transmission part 2 is one that, as illustrated in Fig. 2 or another drawing, converts the electrical signal from the sensor part 1 to the infrared signal, and wirelessly outputs the infrared signal, and provided with: a light source 2a (here, an LED) that emits the infrared signal through a transmission window 12 (here, set in the bottom surface central part of the containing body 10) that is provided in a passing portion 11 for the infrared signal in the containing body 10 and has optical transparency; and a light source control part 2b that lights the light source 2a on the basis of the electrical signal received from the sensor part 1 and is attached with a battery 6 that supplies energy for operating the respective parts of the containing body 10.

[0032] The mounting table 20 is, as illustrated in Figs. 1 and 2, attached with a reception part 3, calculation part 4, and display part 5, and here has a substantially rectangular parallelepiped shape.

[0033] The reception part 3 is one that, as illustrated in Fig. 2 or another drawing, receives the infrared signal emitted from the transmission part 2 through a reception window 21 (here, set in the upper surface central part of the mounting table 20) that is, in the mounting table 20, provided in a portion allowing the infrared signal to pass through, and converts the infrared signal to the electrical signal to output it; provided in a portion facing to the transmission window 12; and here a photodiode. The reception window 21 is made of a material that transmits the infrared signal.

[0034] The calculation part 4 is one that, as illustrated in Fig. 3 or another drawing, receives the electrical signal from the reception part 3; according to a predetermined calculation process, from the electrical signal, extracts the detected value that is a value indicating a detection result by the sensor part 1; and from the detected value, calculates a liquid characteristic value that is a value indicating the characteristics of the liquid.

[0035] The display part 5 is one that is, as illustrated in Fig. 3 or another drawing, provided on the mounting table 20 and displays an analysis result, and here displays the liquid characteristic value received from the calculation part 4.

[0036]  In the present embodiment, close contact means 30 is further provided. The close contact means 30 is one that is, as illustrated in Fig. 2, provided with: a first magnetic part 31 provided in the containing body 10; and a second magnetic part 32 provided in the mounting table 20, and by magnetic force generated between the respective magnetic parts 31 and 32, the transmission window 12 provided in the infrared signal passing portion 11 of the containing body 10 is attracted to and brought into substantially close contact with an inner wall of the container B.

[0037] The first magnetic part 31 is one that, as illustrated in Fig. 2, by the magnetic force generated with the second magnetic part 32, attracts and brings the transmission window 12 for the infrared signal in the containing body 10 to and into close contact with the bottom surface inner wall of the container B, and configured with use of one or more (here, two) magnetic bodies 31a and 31b that are attached in a lower part of the containing body 10 with placing the light source 2a and a light axis of the infrared signal emitted from the light source 2a therebetween. The first magnetic part 31 is not limited to one having such an arrangement, but only required to be attached in locations close to the transmission window 12 rather than to a gravity center of the containing body 10.

[0038] The second magnetic part 32 is one that, as illustrated in Fig. 2, generates the magnetic force with the first magnetic part 31 and on the basis of a change in magnetic force of the second magnetic part 32, rotates the containing body 10 in the container B, and provided with: one or more (here, two) magnets 32a and 32b that are respectively arranged in locations that are in the mounting table 20 and face to the first magnetic part 31; and a rotor (not illustrated) attached with the magnets 32a and 32b. When the rotor is rotationally driven, the respective magnets 32a and 32b rotate to change the magnetic force applied from the second magnetic part 32 to the first magnetic part 31. On the basis of the change in magnetic force of the second magnetic part 32, the containing body 10 rotates with bringing the transmission window 12 into substantially close contact with the bottom surface inner wall of the container B, and thereby stirs the liquid in the container B. On a rotational axis of the containing body 10, the transmission window 12 and reception window 21 are arranged, and here the rotational axis of the containing body 10 and the light axis of the infrared signal emitted from the light source 2a are configured to substantially coincide with each other.

[0039] In the following, a procedure for using the liquid characteristic analyzing apparatus 100 according to the present embodiment to measure the pH of the liquid while stirring the liquid is described. When an operator presses a stirring start switch, the rotor is rotationally driven to rotate the magnets 32a and 32b of the second magnetic part 32. Then, on the basis of the change in magnetic force of the second magnetic part 32, the containing body 10 rotates to stir the liquid.

[0040] In parallel with stirring the liquid, the pH of the liquid is measured. The sensor part 1 measures the pH of the liquid, and outputs an electrical signal having a value corresponding to a measured value. The transmission part 2 converts the electrical signal to an infrared signal, and emits the infrared signal through the transmission window 12. At this time, the containing body 10 is rotating, and on the rotational axis of the rotation, the transmission window 12 of the containing body 10 and the reception window 21 of the mounting table 20 are provided. Accordingly, the emitted infrared signal reaches the reception part 3 through the reception window 21. The reception part 3 converts the infrared signal to an electrical signal; then the calculation part 4 extracts the detected value from the electrical signal to calculate the liquid characteristic value; and the display part 5 displays the liquid characteristic value.

[0041] Note that without stirring the liquid, i.e., without rotating the containing body 10, the pH of the liquid can also be measured. Also, before and after stirring the liquid, the pH of the liquid can also be measured.

[0042] According to the liquid characteristic analyzing apparatus having such a configuration, in the containing body 10, substantially, only the sensor surfaces 1c and 1d are exposed on a surface of the containing body 10 so as to come into contact with the liquid, and the other members are all contained in the containing body 10 having the water-proof structure, so that a whole of the containing body 10 can be immersed in the liquid; even if a level of the liquid is raised, it is not necessary to adjust a level of the containing body 10; and therefore the characteristics of the liquid can be simply and quickly analyzed. Further, the close contact means 30 brings the transmission window 12 provided in the passing portion 11 for the electromagnetic wave signal in the containing body 10 into substantially close contact with the inner wall of the container B, and therefore wireless communication can be certainly made without attenuation of the electromagnetic wave signal in the liquid.

[0043] Also, the first magnetic part 31 is attached in a location close to the transmission window 12 rather than to the gravity center of the containing body 10, and therefore by the magnetic force generated between the respective magnetic parts 31 and 32, the transmission window 12 of the containing body 10 and the reception part 3 can be certainly made to face to each other. Further, because the containing body 10 is cylindrically shaped, it can easily rotate and more certainly make the transmission window 12 and reception part face to each other.

<Embodiment>



[0044] A liquid characteristic analyzing apparatus 100 according to the present embodiment is provided with a containing body 10 that is, as illustrated in Fig. 4, configured to be separable into a first unit 13 provided with a sensor part 1 and a second unit 14 provided with a transmission part 2 and a first magnetic part 31, and when the respective units 13 and 14 are connected to each other, formed into a substantially capsule shape. On a surface of the first unit 13, a concave portion 15 is provided, and in the concave portion 15, sensor surfaces 1c and 1d of the sensor part 1 are exposed.

[0045] The first unit 13 has a cylindrical shape of which one end surface is a flat surface and the other end surface is a hemispherical surface, both of which are respectively closed. In the center of the one end surface, a connector 13a is provided, and on the other end surface, the concave portion 15 is provided. In the concave portion 15, the sensor surfaces 1c and 1d of the sensor part 1 are adjacently exposed.

[0046]  The second unit 14 has a cylindrical shape of which one end surface is a flat surface and the other end surface is a hemispherical surface, both of which are respectively closed. In the center of the one end surface, a hole 14a to be connected with the connector 13a is provided. Note that, in the present embodiment, the first magnetic part 31 is adapted to be provided in the second unit 14; however, it may be adapted to be provided in the first unit 13 or in the respective units 13 and 14. Also, the containing body 10 is adapted to include the two units 13 and 14; however, it may be adapted to include a plurality of units.

[0047] According to the liquid characteristic analyzing apparatus 100 having such a configuration, the containing body 10 is configured to be separable as the plurality of units 13 and 14, so that, as necessary, any one of the sensor part 1 and the transmission part 2 can be easily replaced, whereas a part not replaced can be continuously used, and therefore cost at the time of replacement can be reduced.

[0048] Also, on the surface of the containing body 10, the concave portion 15 is provided, so that liquid can be scooped with the concave portion 15 or dropped into the concave portion 15, and therefore even if an amount of the liquid is extremely small, an analysis can be made.

[0049] Further, the respective sensor surfaces 1c and 1d are adjacently exposed in one and the same concave portion 15, so that it is not necessary to bring the liquid into contact with them separately, and even in the case of an extremely small amount of liquid, the analysis can be simply and quickly made.

[0050] Note that the present invention is not limited to any of the above-described embodiments. For example, at least one of the first and second magnetic parts is only required to have the magnets, whereas the other one is only required to have any of the magnets or magnetic bodies. Also, the first magnetic part may have any of the set of magnets and the set of magnetic bodies and the second magnetic part may have electromagnets, or vice versa.

[0051] In addition, the containing body is adapted to be made of the material that transmits the electromagnetic wave signal; however, it is only necessary for at least the passing portion to be one that transmits the electromagnetic wave signal, and the containing body may be made of a plurality of materials. Also, the containing body may be one that is provided with a main body of the containing body and an openable/closable open/close lid. If so, the battery that supplies the energy for operating the containing body, sensor part, or the like can be easily replaced.

[0052] In any of the above-described embodiments, as the electromagnetic wave signal, the infrared signal is used; however, without limitation to this, a radio wave, visible ray, ultraviolet ray, X-ray, gamma ray, or the like may be used. Also, not only the electromagnetic wave signal, but also a sound wave can be used.

[0053] In addition, the sensor part may be one that measure the pH of the liquid, and the electromagnetic wave signal may be the infrared signal. If so, a measurement result from the sensor part can be transmitted by means of modulation (such as frequency modulation or amplitude modulation) of the infrared signal, whereas by means of intensity attenuation of the infrared signal, temperature can also be measured. Further, it is not necessary to provide the containing body with a temperature sensor, which prevents the containing body from being increased in size, and also by correcting a pH measurement result with temperature, the pH can be highly accurately measured.

[0054] The reception part may be a fore end part of light transmitting means that is connected to a receiver.

[0055] Further, a control signal transmission part that is provided outside the container and transmits control signals (for example, an analysis start signal and an analysis end signal), and a control signal reception part that is provided inside the containing body and receives the respective signals may be provided. The control signals include the energy for operating the containing body.

[0056] Of an existing liquid stirring device provided with: a stirrer (not illustrated) that is arranged in the container B and immersed in the liquid; and a mounting table 40 that is mounted with the container B and rotationally drives the stirrer, the mounting table 40 can also be used. In this case, the mounting table 40 is not provided with the reception part 3 and the like, and therefore it is only necessary to have a configuration, for example, as illustrated in Fig. 5. In Fig. 5, an intermediate body 41 that is arranged between the mounting table 40 and the container B, and a display 42 that is electrically connected to the intermediate body 41 are provided.

[0057] The intermediate body 41 is provided with the reception part 3 and a first calculation part (not illustrated), and configured not to block magnetic force. However, the intermediate body 41 is not limited to this, but in short, only required to be one that does not prevent the close contact or rotation of the containing body 10 by the magnetic force generated between the respective magnetic parts 31 and 32. The first calculation part is one that, according to a predetermined calculation process, from an electrical signal received from the reception part 3, extracts a detected value that is a value indicating a detection result by the sensor part 1.

[0058] The display 42 is one that is provided with a second calculation part (not illustrated) and the display part 5. The second calculation part is one that, from the detected value, calculates the liquid characteristic value that is the value indicating the characteristics of the liquid. The second calculation part and display part 5 are here assumed to be provided for the display 42; however, they may be provided for the intermediate body 41. In this case, the display 42 may not be provided.

[0059] The present invention is adapted such that the stirrer that rotates in the container to stir the liquid in the container is provided with the sensor part that brings the sensor surfaces into contact with the liquid to detect the characteristics of the liquid.

[0060] Further, the present invention may be adapted to provide the stirrer or containing body with the display part that displays a detection result, or provide a storage part (e.g., a memory) that stores a detection result, and electrically connect the storage part to a general-purpose or dedicated computer to extract the detection result.

[0061] Besides, the present invention may combine the respective configurations, and without departing from the scope thereof, can be variously modified.

Industrial Applicability



[0062] 
100:
Liquid characteristic analyzing apparatus
1:
Sensor part
1c, 1d:
Sensor surface
2:
Transmission part
3:
Reception part
5:
Display part
10:
Containing body
11:
Passing portion
12:
Transmission window
13:
First unit
14:
Second unit
15:
Concave portion
20:
Mounting table
30:
Close contact means
31:
First magnetic part
32:
Second magnetic part
B:
Container



Claims

1. A stirrer that is configured to rotate in a container (B) to stir liquid in the container, the stirrer comprising
a sensor part (1) that is configured to bring a sensor surface (1c, 1d) into contact with the liquid to thereby detect the characteristic of the liquid, and output an electrical signal having a value corresponding to a detected value;
a transmission part (2) that is configured to convert the electrical signal to an electromagnetic wave signal or a sound wave signal, and is configured to wirelessly output the electromagnetic wave signal or the sound wave signal;
a containing body (10) that has a structure that exposes the sensor surface (1c, 1d), contains the sensor part (1) and the transmission part (2) in an inside of the structure, and prevents the liquid from intruding into the inside, the containing body (10) is configured to be arranged in the container (B) and immersed in the liquid; and
close contact means (30) comprising a first magnetic part (31) provided in the containing body, the close contact means (30) being configured to bring a passing portion (11) for the electromagnetic wave signal or the sound wave signal in the containing body (10) into substantially close contact with an inner wall of the container (B),
characterized in that a surface of the containing body (10) is provided with a concave portion (15), and the sensor surface (1c, 1d is exposed in the concave portion (15).
 
2. A liquid characteristic analyzing apparatus (100) that is configured to analyze a characteristic of liquid in the container (B), the apparatus (100) comprising: the stirrer according to claim 1; and a second magnetic part (32) that is arranged outside the container (B), wherein the first and second magnetic parts (31, 32) are configured to by magnetic force generated between the respective magnetic parts, bring the passing portion for the electromagnetic wave signal or the sound wave signal in the containing body (10) into substantially close contact with the inner wall of the container (B).
 
3. The liquid characteristic analyzing apparatus (100) according to claim 2, wherein:

the second magnetic part (32) is provided in a mounting table (20) for mounting the container (B); and

the containing body (10) in the container (B) is configured to rotate on a basis of a change in magnetic force of the second magnetic part (32).


 
4. The liquid characteristic analyzing apparatus (100) according to claim 3, wherein:
the passing portion (11) is set on a rotational axis of the containing body (10).
 
5. The liquid characteristic analyzing apparatus (100) according to claim 3, the apparatus further comprising
a reception part (3) that is arranged outside the container (B) and receives the electromagnetic wave signal or the sound wave signal from the transmission part (2), wherein
the reception part (3) is provided in a portion that is in the mounting table (10) and faces to the passing portion (11).
 
6. The liquid characteristic analyzing apparatus (100) according to claim 1, wherein
the electromagnetic wave signal is an infrared signal.
 


Ansprüche

1. Rührwerk, das dafür konfiguriert ist, in einem Behälter (B) zu rotieren, um eine Flüssigkeit im Behälter umzurühren, wobei das Rührwerk umfasst
einen Sensorteil (1), der dafür konfiguriert ist, eine Sensoroberfläche (1c, 1d) mit der Flüssigkeit in Kontakt zu bringen, um dadurch die Eigenschaft der Flüssigkeit zu detektieren, und ein elektrisches Signal mit einem Wert, der einem detektierten Wert entspricht, abzugeben;
einen Übertragungsteil (2), der dafür konfiguriert ist, das elektrische Signal in ein Signal einer elektromagnetischen Welle oder ein Signal einer Schallwelle umzuwandeln, und dafür konfiguriert ist, das Signal einer elektromagnetischen Welle oder das Signal einer Schallwelle drahtlos abzugeben;
einen Aufnahmekörper (10), der eine Struktur hat, die die Sensoroberfläche (1c, 1d) freilegt, den Sensorteil (1) und den Übertragungsteil (2) in einem Inneren der Struktur enthält und verhindert, dass die Flüssigkeit in das Innere eindringt, wobei der Aufnahmekörper (10) dafür konfiguriert ist, im Behälter (B) angeordnet und in der Flüssigkeit untergetaucht zu werden; und
ein Mittel (30) für einen engen Kontakt, das einen im Aufnahmekörper vorgesehenen ersten magnetischen Teil (31) aufweist, wobei das Mittel (30) für einen engen Kontakt dafür konfiguriert ist, einen Durchlassteilbereich (11) für das Signal einer elektromagnetischen Welle oder das Signal einer Schallwelle im Aufnahmekörper (10) in einen im Wesentlichen engen Kontakt mit einer inneren Wand des Behälters (B) zu bringen,
dadurch gekennzeichnet, dass
eine Oberfläche des Aufnahmekörpers (10) mit einem konkaven Teilbereich (15) versehen ist und die Sensoroberfläche (1c, 1d) im konkaven Teilbereich (15) freigelegt ist.
 
2. Vorrichtung (100) zum Analysieren einer Flüssigkeitseigenschaft, die dafür konfiguriert ist, eine Eigenschaft einer Flüssigkeit im Behälter (B) zu analysieren, wobei die Vorrichtung (100) umfasst:

das Rührwerk nach Anspruch 1; und

einen zweiten magnetischen Teil (32), der außerhalb des Behälters (B) angeordnet ist, wobei die ersten und zweiten magnetischen Teile (31, 32) dafür konfiguriert sind, mittels einer zwischen den jeweiligen magnetischen Teilen erzeugten magnetischen Kraft den Durchlassteilbereich für das Signal einer elektromagnetischen Welle oder das Signal einer Schallwelle im Aufnahmekörper (10) in einen im Wesentlichen engen Kontakt mit der inneren Wand des Behälters (B) zu bringen.


 
3. Vorrichtung (100) zum Analysieren einer Flüssigkeitseigenschaft nach Anspruch 2, wobei:

der zweite magnetische Teil (32) in einem Montagetisch (20) zum Montieren des Behälters (B) vorgesehen ist; und

der Aufnahmekörper (10) im Behälter (B) dafür konfiguriert ist, basierend auf einer Änderung in einer magnetischen Kraft des zweiten magnetischen Teils (32) zu rotieren.


 
4. Vorrichtung (100) zum Analysieren einer Flüssigkeitseigenschaft nach Anspruch 3, wobei:
der Durchlassteilbereich (11) auf eine Rotationsachse des Aufnahmekörpers (10) gesetzt ist.
 
5. Vorrichtung (100) zum Analysieren einer Flüssigkeitseigenschaft nach Anspruch 3, wobei die Vorrichtung ferner umfasst:

einen Empfangsteil (3), der außerhalb des Behälters (B) angeordnet ist und das Signal einer elektromagnetischen Welle oder das Signal einer Schallwelle vom Übertragungsteil (2) empfängt, wobei

der Empfangsteil (3) in einem Teilbereich vorgesehen ist, der im Montagetisch (20) liegt und dem Durchlassteilbereich (11) gegenüberliegt.


 
6. Vorrichtung (100) zum Analysieren einer Flüssigkeitseigenschaft nach Anspruch 1, wobei:
das Signal einer elektromagnetischen Welle ein Infrarotsignal ist.
 


Revendications

1. Agitateur qui est configuré pour tourner dans un récipient (B) pour agiter du liquide dans le récipient, l'agitateur comprenant
une partie à capteur (1) qui est configurée pour amener une surface de capteur (1c, 1d) en contact avec le liquide pour détecter ainsi la caractéristique du liquide, et pour émettre un signal électrique ayant une valeur correspondant à une valeur détectée ;
une partie de transmission (2) qui est configurée pour convertir le signal électrique en signal d'onde électromagnétique ou en signal d'onde acoustique et qui est configurée pour émettre sans fil le signal d'onde électromagnétique ou le signal d'onde acoustique ;
un corps contenant (10) qui a une structure qui expose la surface de capteur (1c, 1d), contient la partie à capteur (1) et la partie de transmission (2) à l'intérieur de la structure et empêche le liquide d'entrer à l'intérieur, le corps contenant (10) est configuré pour être disposé dans le récipient (B) et immergé dans le liquide ; et
des moyens de contact étroit (30) comprenant une première partie magnétique (31) prévue dans le corps contenant, les moyens de contact étroit (30) étant configurés pour amener une partie de passage (11) pour le signal d'onde électromagnétique ou le signal d'onde acoustique dans le corps contenant (10) en contact sensiblement étroit avec une paroi intérieure du récipient (B),
caractérisé en ce qu'une surface du corps contenant (10) est pourvue d'une partie concave (15), et la surface de capteur (1c, 1d) est exposée dans la partie concave (15).
 
2. Appareil d'analyse de caractéristique de liquide (100) qui est configuré pour analyser une caractéristique de liquide dans le récipient (B), l'appareil (100) comprenant :

l'agitateur selon la revendication 1 ; et

une deuxième partie magnétique (32) qui est disposée à l'extérieur du récipient (B), dans lequel les première et deuxième parties magnétiques (31, 32) sont configurées pour mettre la partie de passage pour le signal d'onde électromagnétique ou le signal d'onde acoustique dans le corps contenant (10) en contact sensiblement étroit, par une force magnétique générée entre les parties magnétiques respectives, avec la paroi intérieure du récipient (B).


 
3. Appareil d'analyse de caractéristique de liquide (100) selon la revendication 2, dans lequel :

la deuxième partie magnétique (32) est prévue dans une table de montage (20) pour le montage du récipient (B) ; et

le corps contenant (10) dans le récipient (B) est configuré pour tourner sur la base d'un changement de force magnétique de la deuxième partie magnétique (32).


 
4. Appareil d'analyse de caractéristique de liquide (100) selon la revendication 3, dans lequel :
la partie de passage (11) est placée sur un axe de rotation du corps contenant (10).
 
5. Appareil d'analyse de caractéristique de liquide (100) selon la revendication 3, l'appareil comprenant également
une partie de réception (3) qui est disposée à l'extérieur du récipient (B) et reçoit de la partie de transmission (2) le signal d'onde électromagnétique ou le signal d'onde acoustique, dans lequel
la partie de réception (3) est prévue dans une partie qui est dans la table de montage (20) et fait face à la partie de passage (11).
 
6. Appareil d'analyse de caractéristique de liquide (100) selon la revendication 1, dans lequel
le signal d'onde électromagnétique est un signal infrarouge.
 




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Cited references

REFERENCES CITED IN THE DESCRIPTION



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Patent documents cited in the description