AIR CONDITIONING DEVICE

Abstract

 The purpose of the present invention is to increase superheating of low pressure refrigerant by using heat from operating electric parts without impairing piping layout and maintenance by way of a simple and inexpensive configuration. This air conditioning device (1) comprises a compressor that compresses refrigerant, a reactor (15) that is an electric part that generates heat when operating and that constitutes a controller electric circuit to drive the compressor, and a low pressure refrigerant pipe (25) that supplies the refrigerant to the compressor. The low pressure refrigerant pipe (25) has a heat exchanger section (25c) in which an intermediate portion of the low pressure refrigerant pipe branches into a plurality of (two, for example) round pipe branch pipes (25b) and then converges back into one pipe. The plurality of branch pipes (25b) are disposed near the reactor (15) so as to be able to exchange heat.

Description

Technical Field

[0001] The present invention relates to an air conditioner which increases a superheat degree of a low-pressure refrigerant using heat generated when an electric part is operated.

Background Art

[0002] In HFO-1234yf refrigerant (2,3,3,3-tetrafluoro-1-propene: commonly known as HFO refrigerant), which is regarded as a promising next-generation refrigerant with less concern of ozone layer destruction and global warming, because of its physical properties, a temperature of a high-pressure gas tends to be low and a superheat degree of a compressed refrigerant discharged from a compressor is likely to decrease. Accordingly, a moisture state where the refrigerant sucked into the compressor includes a liquid is likely to occur, and thus, reliability of the compressor is impaired by a liquid compression.

[0003]  In view of this, as described in PTLs 1 and 2, there is an air conditioning device in which a flat portion is provided in a portion of a low-pressure refrigerant pipe, an electric part generating heat when operating and an electric part box is positioned to be adjacent to the flat portion, and a superheat degree of the low-pressure refrigerant increases using the heat generated when the electric part is operated so as to improve performance of the air conditioning device.

[0004] In addition, as described in PTL 3, there is an air conditioning device in which a low-pressure refrigerant pipe is disposed to penetrate a reactor which generates high heat when operating so as to increase the superheat degree of the low-pressure refrigerant and cool the reactor.

Citation List

Patent Literature

[0005] 

[PTL 1] Japanese Unexamined Patent Application Publication No. 2006-214633

[PTL 2] Japanese Unexamined Patent Application Publication No. 2014-122724

[PTL 3] Japanese Unexamined Utility Model Registration Application Publication No. 1-101184

Summary of Invention

Technical Problem

[0006] However, like PTLs 1 and 2, in the configuration in which the flat portion is provided in a portion of the low-pressure refrigerant pipe, there are problems that a manufacturing cost of the low-pressure refrigerant pipe increases since the flat portion is formed and a piping layout is restricted since there is no degree of freedom in a bending direction of the flat portion.

[0007] In addition, like PTL 3, in the case where the low-pressure refrigerant pipe is disposed to penetrate the electric part such as the reactor, it is not possible to exchange the electric part, and thus, there is a problem that maintenance of the air conditioning device deteriorates.

[0008] The present invention is made in consideration of the above-described circumstances, and an object thereof is to provide an air conditioning device capable of increasing a superheat degree of a low-pressure refrigerant by using heat generated when an electric part is operated without impairing piping layout and maintenance by a simple and inexpensive configuration.

Solution to Problem

[0009] In order to achieve the above-described object, the present invention adopts the following means.

[0010] That is, according to an aspect of the present invention, there is provided an air conditioning device, including: a compressor which compresses a refrigerant; an electric part which configures an electric circuit section of a controller for driving the compressor and generates heat when operating; a low-pressure refrigerant pipe through which the refrigerant is supplied to the compressor; and a heat exchanger section in which an intermediate portion of the low-pressure refrigerant pipe branches into a plurality of round pipe-shaped branch pipes and the branch pipes are combined into one pipe again, in which the heat exchanger section is disposed to be close to the electric part to be heat-exchangeable with the electric part.

[0011] According to the air conditioning device configured as described above, the heat exchanger section (branch pipe) of the low-pressure refrigerant pipe is disposed to be close to the electric part generating heat when operating to be heat-exchangeable with the electric part. Therefore, cold heat of the low-pressure refrigerant flowing through the heat exchanger section and the heat generated when the electric part is operated are heat-exchanged with each other. Accordingly, using the heat generated when the electric part is operated, a superheat degree of the low-pressure refrigerant is increased and the heat generated when the electric part is operated is cooled.

[0012] The heat exchanger section is configured of the plurality of branch pipes, and thus, an area of the heat exchanger section which heat-exchanges with the surface of the electric part increases. Accordingly, it is possible to effectively perform heat exchange between the low-pressure refrigerant and the electric part. Moreover, the plurality of branch pipes are round pipe-shaped pipes. Therefore, compared to a case where the low-pressure refrigerant pipe is a flat pipe, the configuration of the low-pressure refrigerant pipe is simplified, and thus, it is possible to prevent an increase in a manufacturing cost of the low-pressure refrigerant pipe. Moreover, the round pipe-shaped branch pipe has a degree of freedom in a bending direction thereof, and thus, a piping layout is not easily restricted.

[0013] In the above-described configuration, the electric part may be fixed via a predetermined space between a fixed wall surface to which the electric part is fixed and the electric part, and the heat exchanger section may be disposed to pass through the space.

[0014] According to this configuration, when the electric part is removed from the fixed wall surface, the electric part does not hinder the heat exchanger section. Therefore, detachability of the electric part is improved, and thus, it is possible to hold good maintenance of the air conditioning device.

[0015] In the above-described configuration, a curved outer peripheral surface may be provided in the electric part, and the heat exchanger section may be disposed along the outer peripheral surface of the electric part.

[0016] According to this configuration, a length of the heat exchanger section which comes into contact with a surface of the electric part increases. Therefore, an area of heat exchange between the heat exchanger section and the surface of the electric part increases, and it is possible to increase the superheat degree of the low-pressure refrigerant by the heat generated when the electric part is operated.

[0017] In the above-described configuration, an outer peripheral groove may be formed on the outer peripheral surface of the electric part, and the heat exchanger section may be disposed to be fitted into the outer peripheral groove.

[0018] According to the above-described configuration, the heat exchanger section is fitted into the outer peripheral groove formed on the outer peripheral surface of the electric part. Therefore, the outer peripheral surface of the round pipe-shaped heat exchanger section comes into close contact with an inner peripheral surface of the outer peripheral groove in a planar manner. Accordingly, the area of heat exchange between the heat exchanger section and the surface of the electric part increases, and it is possible to increase the superheat degree of the low-pressure refrigerant by the heat generated when the electric part is operated.

[0019] In the above-described configuration, the electric part may be formed to be divisible to form a division groove in a divided portion and the heat exchanger section may be disposed to be fitted into the division groove.

[0020]  According to the above-described configuration, the heat exchanger section is fitted into the division groove of the electric part. Accordingly, the entire periphery of the outer peripheral surface of the heat exchanger section comes into close contact with the inner peripheral surface of the division groove in a planar manner. Therefore, the area of heat exchange between the heat exchanger section and the electric part is maximized, and it is possible to increase superheating effects of the low-pressure refrigerant by the heat generated when the electric part is operated.

[0021] In addition, it is possible to release the connection between the electric part and the heat exchanger section by dividing the electric part, and thus, when the electric part is removed from the fixed wall surface, the electric part does not hinder the heat exchanger section. Therefore, detachability of the electric part is improved, and thus, it is possible to hold good maintenance of the air conditioning device.

[0022] According to the above-described configuration, the heat exchanger section may be formed in a loop shape and a pipe having the loop shape may be disposed to be close to the electric part to be heat-exchangeable with the electric part.

[0023] According to the above-described configuration, stiffness of the pipe in the heat exchanger section formed in a loop shape decreases. Therefore, when the electric part is attached to or detached from the fixed wall surface, the vicinity of the top of the heat exchanger section can be moved to be separated from the electric part. Accordingly, the electric part can be attached or detached from the heat exchanger section without hindering the heat exchanger section and thus, it is possible to hold good maintenance of the air conditioning device.

Advantageous Effects of Invention

[0024] As described above, according to an outdoor unit for an air conditioner of the present invention, it is possible to increase a superheat degree of a low-pressure refrigerant by using heat generated when an electric part is operated without impairing piping layout and maintenance by a simple and inexpensive configuration.

Brief Description of Drawings

[0025] 

Fig. 1 is a cross sectional view of an outdoor unit for an air conditioner according to an embodiment of the present invention.

Fig. 2 is a perspective view of the vicinity of a reactor showing a first embodiment of the present invention when viewed from an arrow II in Fig. 1.

Fig. 3 is a longitudinal sectional view taken along line III-III in Fig. 2.

Fig. 4 is a perspective view of the vicinity of a reactor showing a second embodiment of the present invention.

Fig. 5 is a longitudinal sectional view taken along line V-V in Fig. 4.

Fig. 6 is a perspective view of the vicinity of a reactor showing a third embodiment of the present invention.

Fig. 7 is a longitudinal sectional view taken along line VII-VII in Fig. 6.

Fig. 8 is a perspective view of the vicinity of a reactor showing a fourth embodiment of the present invention.

Fig. 9 is a perspective view showing a state where a front end portion of a core shown in Fig. 8 is separated from a main body portion.

Fig. 10 is a longitudinal sectional view taken along line X-X in Fig. 8.

Description of Embodiments

[0026] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0027] Fig. 1 is a cross sectional view of an air conditioning device according to an embodiment of the present invention. An air conditioning device 1 is an outdoor unit which is connected to an indoor unit installed in a room of a store, an office, or a residence, or the like and is installed outside.

[0028] The air conditioning device 1 includes a box-shaped housing 2. An air outlet 3 is open to a front surface of the housing 2, and a rear surface and one side surface of the housing 2 are open as air inlets 4a and 4b. Inside the housing 2, a machine room 6 is installed on one side in a width direction thereof and a fan 7 is installed on the other side in the width direction. A compressor 8 which compressed a refrigerant such as an HFO refrigerant and various devices including an electric part such as a reactor 15 described in detail later are accommodated in the machine room 6. In addition, an internal space of the housing 2 except for the machine room 6 is a heat exchange room 11.

[0029]  The fan 7 is an axial flow fan which includes a blade 7a, a fan motor 7b which rotationally drives the blade 7a, a motor deck 7c, and a bell mouth 7d which surround the periphery of the blade 7a and smoothens the shape of the air outlet 3, and the fan motor 7b is supported by the motor deck 7c and is installed inside the housing 2. In addition, a baffle plate 6a which forms the machine room 6 is adjacent to the bell mouth 7d and a rear surface of the baffle plate 6a is curved to face the fan 7.

[0030] In the heat exchange room 11 inside the housing 2, a heat exchanger 12 is installed along the air inlets 4a and 4b. The heat exchanger 12 includes a long side portion 12a facing the air inlet 4a and a short side portion 12b facing the air inlet 4b and is formed in an approximately L shape in a plan view. The long side portion 12a extends from the rear surface side of the fan 7 to the rear surface side of the machine room 6 along the rear surface of the housing 2.

[0031] If the fan motor 7b of the fan 7 is operated, the blade 7a rotates, an outside air is sucked from the air inlets 4a and 4b on the rear surface and the side surface of the housing 2, and the outside air passes through the heat exchanger 12 (12a and 12b) to heat-exchange with a refrigerant flowing through the inside of the heat exchanger 12. Thereafter, the outside air is discharged from the air outlet 3 on the front surface of the housing 2.

[0032] The reactor 15 (electric part) is fixed to the baffle plate 6a (fixed wall surface) which configures the machine room 6. The reactor 15 is a part which configures an electric circuit section of a controller (not shown) for driving the compressor 8 and generates heat when operating.

[First Embodiment]

[0033] Fig. 2 is a perspective view of the vicinity of the reactor 15 showing a first embodiment of the present invention when viewed from an arrow II in Fig. 1, and Fig. 3 is a longitudinal sectional view taken along line III-III in Fig. 2.

[0034] The reactor 15 is configured to include a base plate 16, a core (iron core) 17, a coil (winding) 18, a terminal 19, or the like, and for example, four corners of the base plate 16 are fixed to the baffle plate 6a using screws 21 and nuts 22.

[0035]  Meanwhile, as shown in Figs. 1 and 2, a low-pressure refrigerant pipe 25 through which a low-pressure refrigerant is supplied to the compressor 8 is disposed in the machine room 6. The low-pressure refrigerant pipe 25 is configured to include a main pipe 25a and two round pipe-shaped branch pipes 25b (pipes) branching off from an intermediate portion of the main pipe 25a, and the portions of the two branch pipes 25b become a heat exchanger section 25c.

[0036] The low-pressure refrigerant pipe 25 is connected to a suction port (not shown) of the compressor 8 via a four-way valve (not shown). In a cooling mode, a refrigerant vaporized by a heat exchanger built in an indoor unit (not shown) is supplied to the compressor 8 through the low-pressure refrigerant pipe 25, and in a heating mode, a refrigerant vaporized by the heat exchanger 12 is supplied to the compressor 8 through the low-pressure refrigerant pipe 25.

[0037] As described above, the heat exchanger section 25c provided in the intermediate portion of the low-pressure refrigerant pipe 25 is configured such that the two round pipe-shaped branch pipes 25b branch off from the main pipe 25a of the low-pressure refrigerant pipe 25 and are combined into one pipe again, for example. In addition, the branch pipes 25b are disposed to be close to the reactor 15 to be heat-exchangeable with the reactor 15. The number of the branch pipes 25b may be three or more.

[0038] Specifically, for example, a length of the heat exchanger section 25c (branch pipes 25b) is approximately 30 cm, and is formed to have a loop shape which protrudes upward in front of the reactor 15. The vicinity of the top of the loop shape is formed in a linear shape, and this linear portion of the heat exchanger section 25c (branch pipes 25b) extends in a horizontal direction along a front surface of the reactor 15 and is in contact with the front surface of the reactor 15 (core 17). For example, the linear portion is fixed to the front surface of the reactor 15 by a bracket 27. For example, the bracket 27 is fastened to a fastening boss 17d, which is provided in the core 17 of the reactor 15, by screws 28, and a portion between the core 17 and the branch pipes 25b is filled with a heat-conducting sealant 30.

[0039] In the air conditioning device 1 configured as described above, in any operation mode such as the cooling mode or the heating mode, the low-pressure refrigerant vaporized by the heat exchanger 12 or the heat exchanger of the indoor unit is supplied to the compressor 8 via the low-pressure refrigerant pipe 25. The plurality of branch pipes 25b configuring the heat exchanger section 25c of the low-pressure refrigerant pipe 25 are dispose to be close to the reactor 15 generating heat when operating so as to be heat-exchangeable with the reactor 15. Accordingly, cold heat of the low-pressure refrigerant flowing through the heat exchanger section 25c (branch pipes 25b) and the heat generated when the reactor 15 is operated are heat-exchanged with each other. Therefore, a superheat degree of the low-pressure refrigerant is increased by using the heat generated when the reactor 15 is operated, and the heat generated when the reactor 15 is operated is cooled.

[0040] The heat exchanger section 25c of the low-pressure refrigerant pipe 25 is configured of the plurality of branch pipes 25b. Accordingly, an area of the heat exchanger section which heat-exchanges with the surface of the reactor 15 increases and it is possible to effectively perform heat exchange between the low-pressure refrigerant and the reactor 15.

[0041] Moreover, the plurality of branch pipes 25b are round pipe-shaped pipes. Therefore, compared to a case where the low-pressure refrigerant pipe 25 is a flat pipe, the configuration of the low-pressure refrigerant pipe 25 is simplified, and thus, it is possible to prevent an increase in a manufacturing cost of the low-pressure refrigerant pipe 25.

[0042] In addition, the round pipe-shaped branch pipe 25b has a degree of freedom in a bending direction thereof, and thus, a piping layout is not easily restricted.

[0043] Moreover, the portion between the core 17 and the branch pipe 25b is filled with the heat-conducting sealant 30, and thus, a heat resistance between the core 17 and the branch pipe 25b decreases, and heat exchange between both members 17 and 25b can be more effectively performed.

[0044] In addition, the branch pipe 25b is formed in a loop shape and the linear portion in the vicinity of the top of the loop shape is close to the reactor 15 to be heat-exchangeable with the reactor 15. Accordingly, stiffness in the vicinity of the top of the branch pipe 25b decreases, and thus, it is possible to move the vicinity of the loop top of the branch pipe 25b in a direction separated from the reactor 15 by removing the bracket 27.

[0045] Therefore, when a replacement operation of the reactor 15 is performed, it is possible to attach and detach the reactor 15 without hindering the branch pipe 25b (heat exchanger section 25c), and it is possible to hold good maintenance of the air conditioning device 1.

[0046] At least a portion of the main pipe 25a of the low-pressure refrigerant pipe 25 is formed of a flexible pipe, and thus, it is possible to more easily move the branch pipe 25b largely, and it is possible to further improve the maintenance of the air conditioning device 1 generated according to the exchange of the reactor 15.

[Second Embodiment]

[0047] Fig. 4 is a perspective view of the vicinity of the reactor 15 showing a second embodiment of the present invention, and Fig. 5 is a longitudinal sectional view taken along line V-V in Fig. 4.

[0048] In this embodiment, the reactor 15 is fixed using screws 21, nuts 22, and spacers 33 such that a predetermined space S is interposed between the baffle plate 6a and the reactor 15.

[0049] Meanwhile, similarly to the first embodiment, in the low-pressure refrigerant pipe 25, for example, the heat exchanger section 25c is formed to have the configuration in which the two round pipe-shaped branch pipes 25b branch off from the main pipe 25a and the branch pipes 25b are combined into one pipe again. The two branch pipes 25b (heat exchanger section 25c) are disposed so as to pass through the space S between the reactor 15 and the baffle plate 6a. A width of the space S is set to be the same as an outer diameter of the branch pipe 25b or to be slightly larger than the outer diameter.

[0050] As shown in Fig. 5, a portion between the reactor 15 (base plate 16) and the baffle plate 6a is filled with the heat-conducting sealant 30 to enclose the branch pipes 25b. In this way, the two branch pipes 25b are disposed to be close to the reactor 15 to be heat-exchangeable with the reactor 15.

[0051] According to the configuration, when the reactor 15 is removed from the baffle plate 6a, the reactor 15 does not hinder the branch pipes 25b (heat exchanger section 25c). That is, it is possible to attach and detach the reactor 15 without moving the branch pipe 25b. Therefore, it is possible to hold good maintenance of the air conditioning device 1 generated according to the exchange of the reactor 15.

[Third Embodiment]

[0052] Fig. 6 is a perspective view of the vicinity of the reactor 15 showing a third embodiment of the present invention, and Fig. 7 is a longitudinal sectional view taken along line VII-VII in Fig. 6.

[0053] In this embodiment, in the reactor 15, an outer peripheral surface of the core 17 is a curved surface. In addition, a height of the core 17 from the base plate 16 is higher than those of the first and second embodiments. In addition, two outer peripheral grooves 17a which extend in a horizontal direction are formed on the outer peripheral surface of the core 17. In addition, the reactor 15 is fixed using the screws 21, the nuts 22, and the spacers 34 in a state of floating from the baffle plate 6a. However, the reactor 15 may be fixed without using the spacers 34.

[0054] Meanwhile, the heat exchanger section 25c provided in the low-pressure refrigerant pipe 25 has approximately the same configuration as those of the first and second embodiments. However, the two branch pipes 25b extend upward from the main pipe 25a and thereafter, are perpendicularly curved to the baffle plate 6a side. Thereafter, the two branch pipes 25b are perpendicularly curved in the horizontal direction and are disposed along the curved outer peripheral surface of the core 17 of the reactor 15 and to be fitted into the outer peripheral grooves 17a on the outer peripheral surface of the core 17. The branch pipes 25b may be fixed to the core 17 by a bracket or the like.

[0055] According to the above-described configuration, the branch pipes 25b are disposed along the curved outer peripheral surface of the reactor 15 (core 17), and thus, a contact length between the branch pipes 25b and the reactor 15 increases.

[0056] In addition, the branch pipes 25b are fitted into the outer peripheral grooves 17a formed on the outer peripheral surface of the core 17, and thus, the outer peripheral surfaces of the round pipe-shaped branch pipes 25b come into close contact with inner peripheral surfaces of the outer peripheral grooves 17a in a planar manner.

[0057] Accordingly, the area of heat exchange between the branch pipes 25b and the surface of the reactor 15 increases, and it is possible to effectively increase the superheat degree of the low-pressure refrigerant using the heat generated when the reactor 15 is operated, and it is possible to cool the reactor 15. In addition, when the reactor 15 is replaced, the baffle plate 6a is taken outside the machine in a state where the reactor 15 is fixed, and thereafter, the reactor 15 can be removed from the baffle plate 6a so as to be exchanged.

[Fourth Embodiment]

[0058] Figs. 8 and 9 are perspective views of the vicinity of the reactor 15 showing a fourth embodiment of the present invention, and Fig. 10 is a longitudinal sectional view taken along line X-X in Fig. 8.

[0059] In this embodiment, in the reactor 15, a front end portion 17A of the core 17 can be separated from a main body portion 17B, and the front end portion 17A is fixed to the main body portion 17B to be attachable to or detachable from the main body portion 17B by four screws 36. In addition, as shown in Fig. 10, two division grooves 17b and 17c are formed in each of both surfaces of a divided portion between the front end portion 17A and the main body portion 17B of the core 17.

[0060] Meanwhile, the heat exchanger section 25c provided in the low-pressure refrigerant pipe 25 has approximately similar configuration to those of the first and second embodiments. However, in the present embodiment, an intermediate horizontal portion of each of the two branch pipes 25b is disposed to be fitted into the division grooves 17b and 17c of the reactor 15 (core 17). That is, the two branch pipes 25b are clamped to the division type core 17 of the reactor 15.

[0061] According to the above-described configuration, the branch pipes 25b are fitted into the division grooves 17b and 17c, and thus, the entire peripheries of the outer peripheral surfaces of the branch pipes 25b comes into close contact with the inner peripheral surfaces of the division grooves 17b and 17c in a planar manner. Accordingly, the area of heat exchange between the branch pipes 25b (heat exchanger section 25c) and the reactor 15 is maximized, and it is possible to increase superheating effects of the low-pressure refrigerant by the heat generated when the reactor 15 is operated.

[0062] In addition, since the reactor 15 is divided, the connection between the reactor 15 and the branch pipe 25b can be released, and when the reactor 15 is removed from the baffle plate 6a, the reactor 15 can be easily removed by slightly moving the branch pipes 25b forward. Therefore, detachability of the reactor 15 is improved, and thus, it is possible to hold good maintenance of the air conditioning device 1.

[0063] As described above, according to the air conditioning device 1 of the embodiments, it is possible to increase the superheat degree of the low-pressure refrigerant flowing through the low-pressure refrigerant pipe 25 by using the heat generated when the reactor 15 is operated without impairing piping layout and maintenance by a simple and inexpensive configuration.

[0064] In addition, the present invention is not limited to the configurations of the above-described embodiments, modifications or additions can be appropriately applied to the invention within a scope which does not depart from the gist of the present invention, and embodiments to which the modifications or additions are applied are also included in the scope of the present invention.

[0065] For example, the configurations of the embodiments may be combined or the like.

[0066] In addition, the above-described embodiments are configured such that the entire amount of the low-pressure refrigerant passing through the low-pressure refrigerant pipe 25 passes through the branch pipes 25b (heat exchanger section 25c). However, only a portion of the low-pressure refrigerant passes through the branch pipes 25b.

[0067] In addition, the present invention is suitable for application to the air conditioning device which uses the HFO refrigerant or the HFO mixed refrigerant. However, the present invention can also be applied to an air conditioning device which uses other kinds of refrigerants. Reference Signs List

[0068] 

1:

air conditioning device

6:

machine room

6a:

baffle plate (fixed wall surface)

7:

fan

8:

compressor

12:

heat exchanger

15:

reactor (electric part)

16:

base plate

17:

core

17a:

outer peripheral groove

17b, 17c:

division groove

18:

coil

19:

terminal

25:

low-pressure refrigerant pipe

25a:

main pipe

25b:

branch pipe (pipe having loop shape)

25c:

heat exchanger section

S:

space

Claims

1. An air conditioning device, comprising:

a compressor which compresses a refrigerant;

an electric part which configures an electric circuit section of a controller for driving the compressor and generates heat when operating;

a low-pressure refrigerant pipe through which the refrigerant is supplied to the compressor; and

a heat exchanger section in which an intermediate portion of the low-pressure refrigerant pipe branches into a plurality of round pipe-shaped branch pipes and the branch pipes are combined into one pipe again,

wherein the heat exchanger section is disposed to be close to the electric part to be heat-exchangeable with the electric part.

2. The air conditioning device according to claim 1,
wherein the electric part is fixed via a predetermined space between a fixed wall surface to which the electric part is fixed and the electric part, and
wherein the heat exchanger section is disposed to pass through the space.

3. The air conditioning device according to claim 1 or 2,
wherein the electric part includes a curved outer peripheral surface, and
wherein the heat exchanger section is disposed along the outer peripheral surface of the electric part.

4. The air conditioning device according to any one of claims 1 to 3,
wherein an outer peripheral groove is formed on the outer peripheral surface of the electric part, and
wherein the heat exchanger section is disposed to be fitted into the outer peripheral groove.

5. The air conditioning device according to claim 1,
wherein the electric part is formed to be divisible to form a division groove in a divided portion, and
wherein the heat exchanger section is disposed to be fitted into the division groove.

6. The air conditioning device according to any one of claims 1 to 5,
wherein the heat exchanger section is formed in a loop shape and a pipe having the loop shape is disposed to be close to the electric part to be heat-exchangeable with the electric part.

Amended claims

Amended claims under Art. 19.1 PCT

1. (Amended) An air conditioning device, comprising:

a compressor which compresses a refrigerant;

an electric part which configures an electric circuit section of a controller for driving the compressor and generates heat when operating;

a low-pressure refrigerant pipe through which the refrigerant is supplied to the compressor; and

a heat exchanger section in which an intermediate portion of the low-pressure refrigerant pipe branches into a plurality of round pipe-shaped branch pipes and the branch pipes are combined into one pipe again,

wherein the heat exchanger section is disposed to be close to the electric part to be heat-exchangeable with the electric part on a surface on a side opposite to a surface of the electric part on a fixed wall surface side to which the electric part is fixed.

2. (Amended) The air conditioning device according to claim 1,
wherein the electric part includes a curved outer peripheral surface, and
wherein the heat exchanger section is disposed along the outer peripheral surface of the electric part.

3. (Amended) An air conditioning device, comprising:

a compressor which compresses a refrigerant;

an electric part which configures an electric circuit section of a controller for driving the compressor and generates heat when operating;

a low-pressure refrigerant pipe through which the refrigerant is supplied to the compressor; and

a heat exchanger section in which an intermediate portion of the low-pressure refrigerant pipe branches into a plurality of round pipe-shaped branch pipes and the branch pipes are combined into one pipe again,

wherein the heat exchanger section is disposed to be close to the electric part to be heat-exchangeable with the electric part,

wherein the electric part includes a curved outer peripheral surface, and

wherein the heat exchanger section is disposed along the outer peripheral surface of the electric part.

4. The air conditioning device according to any one of claims 1 to 3,
wherein an outer peripheral groove is formed on the outer peripheral surface of the electric part, and
wherein the heat exchanger section is disposed to be fitted into the outer peripheral groove.

5. (Amended) An air conditioning device, comprising:

a compressor which compresses a refrigerant;

an electric part which configures an electric circuit section of a controller for driving the compressor and generates heat when operating;

a low-pressure refrigerant pipe through which the refrigerant is supplied to the compressor; and

a heat exchanger section in which an intermediate portion of the low-pressure refrigerant pipe branches into a plurality of round pipe-shaped branch pipes and the branch pipes are combined into one pipe again,

wherein the heat exchanger section is disposed to be close to the electric part to be heat-exchangeable with the electric part,

wherein an outer peripheral groove is formed on the outer peripheral surface of the electric part, and

wherein the heat exchanger section is disposed to be fitted into the outer peripheral groove.

6. (Amended) An air conditioning device, comprising:

a compressor which compresses a refrigerant;

an electric part which configures an electric circuit section of a controller for driving the compressor and generates heat when operating;

a low-pressure refrigerant pipe through which the refrigerant is supplied to the compressor; and

a heat exchanger section in which an intermediate portion of the low-pressure refrigerant pipe branches into a plurality of round pipe-shaped branch pipes and the branch pipes are combined into one pipe again,

wherein the heat exchanger section is disposed to be close to the electric part to be heat-exchangeable with the electric part,

wherein the electric part is formed to be divisible to form a division groove in a divided portion, and

wherein the heat exchanger section is disposed to be fitted into the division groove.

7. (Added) The air conditioning device according to any one of claims 1 to 6,
wherein the heat exchanger section is formed in a loop shape and a pipe having the loop shape is disposed to be close to the electric part to be heat-exchangeable with the electric part.

Drawing