[0001] The present invention relates to a transmission relay device connected between an
outdoor unit and indoor unit and configured to relay data transmission as well as
to an air-conditioning device that uses the transmission relay device.
Background Art
[0002] In a conventional air-conditioning device, an outdoor unit and indoor unit are connected
to each other through a transmission line, and communicate with each other, enabling
coordinated operation control. The outdoor unit and indoor unit are assigned respective
addresses for identification and communicate with various pieces of equipment based
on the addresses. It is proposed to install a transmission relay device between the
outdoor unit and indoor unit to reduce process concentration on a centralized control
apparatus as well as communication traffic (see, for example, Patent Literature 1).
Patent Literature 1 discloses that a transmission relay device is installed between
the outdoor unit and indoor unit and that the transmission relay device has a function
to transmit part or all of various data handled by the centralized control apparatus.
[0003] Patent Literature 2 discloses as well a transmission relay device which is arranged
between transmission line connecting the outdoor devices to a central management device
and a second transmission connected to the indoor device and which is performing signal
relay between the first and second transmission lines. The relay device further includes
operation processing means and data storage means.
Citation List
Patent Literature
Summary of Invention
Technical Problem
[0005] Now, in an air-conditioning device such as in Patent Literature 1, the number of
addresses for indoor units is set in advance, and it is common to set restrictions
on the number of indoor units connected within a same communication system. Consequently,
the air-conditioning device can be connected with only a predetermined number of indoor
units due to restrictions on communication traffic or communication addresses. On
the other hand, from a functional perspective on a refrigeration cycle, with upsizing
of outdoor units or spread of interaction control of a plurality of outdoor units,
outdoor units and indoor units may be able to be installed in excess of numbers determined
by the above-mentioned number of addresses, in a same refrigerant system or in a large-scale
system including a plurality of refrigerant systems. Thus, it is desired that indoor
units of a number in excess of the number determined by the number of addresses can
be installed.
[0006] The present invention has been made to overcome the above problem and has an object
to provide a transmission relay device that makes it possible to increase the number
of indoor units connected to an outdoor unit without being restricted by the number
of addresses that can be set in a system as a whole and to provide an air-conditioning
device that uses the transmission relay device.
Solution to Problem
[0007] The problem is solved by the features of claim 1.
[0008] An embodiment of the present invention provides a transmission relay device configured
to relay communication between an outdoor unit and a plurality of indoor units connected
by refrigerant pipes, the transmission relay device comprising: a virtual device setting
unit configured to set a virtual indoor unit unifying two or more of the plurality
of indoor units; a data storage unit configured to store an address of the outdoor
unit, addresses of the plurality of indoor units, and an address of the virtual indoor
unit; and a relay processor configured to communicate as the virtual indoor unit with
the outdoor unit and relay a signal transmitted from the outdoor unit to the plurality
of indoor units, using the addresses stored in the data storage unit. Advantageous
Effects of Invention
[0009] With the transmission relay device of an embodiment of the present invention, since
the virtual device setting unit sets a virtual indoor unit by unifying a plurality
of indoor units and the relay processor relays communication with the outdoor unit,
it is possible to expand the number of indoor units connected to one or more refrigerant
systems without being restricted by the number of addresses that can be set in a system
as a whole.
Brief Description of Drawings
[0010]
[Fig. 1] Fig. 1 is a refrigerant circuit diagram showing an example of an air-conditioning
device according to an embodiment of the present invention.
[Fig. 2] Fig. 2 is a schematic diagram showing an example of an outdoor unit in the
air-conditioning device of Fig. 1.
[Fig. 3] Fig. 3 is a schematic diagram showing an example of an indoor unit in the
air-conditioning device of Fig. 1.
[Fig. 4] Fig. 4 is a block diagram showing an example of a transmission relay device
in the embodiment of the present invention.
[Fig. 5] Fig. 5 is a schematic diagram showing how a virtual indoor unit is built
in the transmission relay device of Fig. 4.
[Fig. 6] Fig. 6 is a schematic diagram showing an example of data stored in a data
storage unit of the transmission relay device of Fig. 4.
[Fig. 7] Fig. 7 is a flowchart showing an operation example of the transmission relay
device of Fig. 4.
[Fig. 8] Fig. 8 is a flowchart showing an example of control over the transmission
relay device of Fig. 5 in which a virtual indoor unit is set up. Description of Embodiments
[0011] A transmission relay device an air-conditioning device using the transmission relay
device according to the present invention and an embodiment will be described below
with reference to the drawings. Fig. 1 is a refrigerant circuit diagram showing an
example of the air-conditioning device according to the embodiment of the present
invention. The air-conditioning device 1 of Fig. 1 performs cooling operation and
heating operation using a refrigeration cycle (heat pump cycle) based on refrigerant
circulation. The air-conditioning device 1 of Fig. 1 includes an outdoor unit 10 and
a plurality of indoor units 20A to 20D connected to the outdoor unit 10 via refrigerant
pipes 2, and makes up a single refrigerant system A (refrigeration cycle) from the
outdoor unit 10 and a plurality of indoor units 20A to 20D. The outdoor unit 10 and
a plurality of indoor units 20A to 20D are connected to a transmission relay device
30 via respective transmission lines 3 and data transmission between the outdoor unit
10 and a plurality of indoor units 20A to 20D is carried out via the transmission
relay device 30. Also, the air-conditioning device 1 is connected to a centralized
control apparatus 1A in such a way as to be able to carry out data transmission, and
air-conditioning device 1 of other refrigerant systems B and C are also connected
to the centralized control apparatus 1A in such a way as to be able to carry out data
transmission. The centralized control apparatus 1A monitors and controls operation
of each of the air-conditioning device 1.
[0012] Note that whereas Fig. 1 illustrates by example a case in which the air-conditioning
device 1 includes one outdoor unit 10 and four indoor units 20A to 20D, the air-conditioning
device 1 may include plural, i.e., two or more, outdoor units 10 or one indoor unit
20. Also, although the refrigerant pipes 2 are indicated by a single line, actually
at least two pipes are used to circulate refrigerant. Furthermore, the air-conditioning
device 1 may perform only cooling operation or heating operation at a time in all
of the plurality of indoor units 20A to 20D or perform simultaneous heating and cooling
operation in which the plurality of indoor units 20A to 20D perform either cooling
operation or heating operation individually at a same time. Besides, although each
air-conditioning device 1 includes a transmission relay device 30, a single transmission
relay device 30 may be shared by a plurality of air-conditioning device 1 (a plurality
of refrigerant systems).
[0013] Fig. 2 is a schematic diagram showing an example of an outdoor unit in the air-conditioning
device of Fig. 1. In Fig. 2, the outdoor unit 10 includes a compressor 11, a flow
switching device 12, an outdoor-side heat exchanger 13, an accumulator 15, and other
components. The compressor 11 is designed to compress sucked refrigerant, compress
the refrigerant at any pressure based on operating frequency, and discharge the refrigerant.
The flow switching device 12 is connected to a discharge side of the compressor 11
and made up of a four-way valve configured to switch a pipe circuit according to,
for example, whether an operation mode is cooling or heating. The outdoor-side heat
exchanger 13 is, for example, a fin tube heat exchanger and is designed to exchange
heat between refrigerant and air. An outdoor-side fan 14 is designed to send air to
the outdoor-side heat exchanger 13. The accumulator (liquid separator) 15 is connected
to a suction side of the compressor 11 and designed to accumulate surplus refrigerant.
[0014] The outdoor unit 10 includes an outdoor-side communication unit 16, an outdoor-side
control unit 17, and an outdoor-side storage unit 18. The outdoor-side communication
unit 16 is connected to the transmission relay device 30 via a transmission line 3
and designed to serve as an interface for signal communication between the transmission
relay device 30 and outdoor-side control unit 17. The outdoor-side control unit 17
is designed to control operation of various equipment of the outdoor unit 10 including
the compressor 11, flow switching device 12, and outdoor-side fan 14. The outdoor-side
control unit 17 performs operation control based on, for example, signals transmitted
from the transmission relay device 30 and received by the outdoor-side communication
unit 16. The outdoor-side storage unit 18 stores data needed by the outdoor-side control
unit 17 to perform processing. Furthermore, the outdoor-side storage unit 18 stores
address information, data on relationships among refrigerant systems, and other data/information.
[0015] Fig. 3 is a schematic diagram showing an example of the indoor unit in the air-conditioning
device of Fig. 1. Although the indoor unit 20A is illustrated by example in Fig. 3,
the indoor units 20B to 20D have a same configuration. The indoor unit 20A includes
an indoor-side heat exchanger 21, an expansion valve 22, and an indoor unit fan 23,
etc. The indoor-side heat exchanger 21 is, for example, a fin tube heat exchanger
and is designed to exchange heat between the refrigerant flowing in from the side
of the outdoor unit 10 and air in an air-conditioned space. The indoor unit fan 23
sends air to the indoor-side heat exchanger 21 in order for the indoor-side heat exchanger
21 to exchange heat and sends the heat-exchanged air into a room. The expansion valve
22 comprises, for example, an electronic expansion valve or another valve, which decompress
the refrigerant and controls a flow rate of the refrigerant by going through an adjustment
of an opening degree thereof.
[0016] The indoor unit 20A includes an indoor-side communication unit 24, an operating unit
25, an indoor-side control unit 26, and an indoor-side storage unit 27. The indoor-side
communication unit 24 is connected to the transmission relay device 30 via a transmission
line 3 and serves as an interface for signal communication between the transmission
relay device 30 and indoor-side control unit 26. The operating unit 25 is made up,
for example, of a remote controller and designed to transmit, for example, a setting
temperature, operation mode, and other inputs entered by an operator, as a signal
to the indoor-side control unit 26. The indoor-side control unit 26 is designed to
control operation of devices such as the expansion valve 22 or indoor unit fan 23.
The indoor-side control unit 26 controls various equipment of the indoor unit 20A
including the expansion valve 22 and indoor unit fan 23 based, for example, on a command
signal from the operating unit 25 or a signal received by the indoor-side communication
unit 24. The indoor-side storage unit 27 stores data needed by the indoor-side control
unit 26 to perform processing as well as operating capacity of the indoor unit 20A.
Furthermore, the indoor-side storage unit 27 stores address information, data on relationships
among refrigerant systems, and operating capacity.
[0017] Fig. 4 is a block diagram showing an example of the transmission relay device in
the air-conditioning device of Fig. 1. Various components of the transmission relay
device shown in Fig. 4 are realized, for example, by executing a program on a microcomputer
or computer or other devices. The transmission relay device 30 of Fig. 4 is designed
to relay communication between the outdoor unit 10 and a plurality of indoor units
20A to 20D and provided with a first transmission unit 31, a second transmission unit
32, a data storage unit 33, and a computational processing unit 40. The first transmission
unit 31 is connected to the outdoor unit 10 via a transmission line 3 and designed
to serve as an interface for signal communication with the outdoor unit 10. The second
transmission unit 32 is connected to the plurality of indoor units 20A to 20D via
the transmission line 3 and designed to serve as an interface for signal communication
with the plurality of indoor units 20A to 20D.
[0018] The computational processing unit 40 is designed to process various data exchanged
between the first transmission unit 31 and second transmission unit 32. In particular,
the computational processing unit 40 is designed to internally set a virtual indoor
unit and conduct communication, as a virtual indoor unit, with the outdoor unit 10
and is provided with a virtual device setting unit 41 and a relay processor 42.
[0019] The virtual device setting unit 41 is designed to set a virtual indoor unit by unifying
two or more of the plurality of indoor units 20A to 20D. Fig. 5 is a schematic diagram
showing a virtual indoor unit built in the transmission relay device of Fig. 4. As
shown in Fig. 5, the transmission relay device 30 behaves as a single virtual indoor
unit VI when communicating with the outdoor unit 10, and behaves as a unit substituting
the outdoor unit 10 in a manner similar to the outdoor unit 10 when communicating
with the plurality of indoor units 20A to 20D.
[0020] The virtual device setting unit 41 of Fig. 4 includes a number-of-virtual-units setting
unit 41A configured to set the number of virtual indoor units VI, and an operating
capacity calculation unit 41B configured to calculate virtual operating capacity of
each of the virtual indoor units VI, of which the virtual number has been set by the
number-of-virtual-units setting unit 41A, using the operating capacities of the indoor
units 20A to 20D stored in the data storage unit 33. The operating capacities of the
indoor units 20A to 20D are stored in the data storage unit 33.
[0021] The number-of-virtual-units setting unit 41A sets a predetermined number of units
(e.g., one unit) and the operating capacity calculation unit 41B calculates the virtual
operating capacity of the virtual indoor unit VI by adding up the operating capacities
of running indoor units 20A to 20D. The operating capacity calculation unit 41B is
designed to recalculate the virtual operating capacity when the number of running
indoor units 20A to 20D changes or when the operation mode changes.
[0022] Alternatively, the number-of-virtual-units setting unit 41A may set the number of
units according to the operation modes of the indoor units 20A to 20D. Then, the number-of-virtual-units
setting unit 41A sets an address of the virtual indoor unit VI, and stores the address
in the data storage unit 33. When setting the number of units according to the operation
modes, the number-of-virtual-units setting unit 41A classifies the plurality of indoor
units 20A to 20D by the operation mode, and sets a virtual indoor unit VI for each
group of indoor units resulting from the classification. For example, when all the
plurality of indoor units 20A to 20D are performing cooling operation or heating operation,
one virtual indoor unit VI is set by unifying the four indoor units 20A to 20D. Then,
the operating capacity calculation unit 41B calculates the virtual operating capacity
of the virtual indoor unit VI by adding up the operating capacities of the four indoor
units 20A to 20D and stores the virtual operating capacity in the data storage unit
33. In this way, when a plurality of operation modes coexist, as the virtual device
setting unit 41 sets virtual indoor units by classifying the indoor units by the operation
mode, in performing mixed simultaneous heating and cooling operation, the air-conditioning
device 1 can perform control effectively by keeping down a volume of communication
traffic and amount of signal processing.
[0023] Although a case in which the number-of-virtual-units setting unit 41A sets the number
of virtual indoor units VI for each operation mode of the indoor units 20A to 20D
is illustrated by example, this is not restrictive, and that one virtual indoor unit
VI may be set for a predetermined number of indoor units (e.g., three units) or for
each floor, regardless of the operation modes of the indoor units 20A to 20D.
[0024] It is assumed that, for example, the indoor units 20A and 20B performing cooling
operation and the indoor units 20C and 20D performing heating operation coexist among
the plurality of indoor units 20A to 20D. In so doing, on the plurality of indoor
units 20A to 20D, the number-of-virtual-units setting unit 41A sets two virtual indoor
units VI: one of two virtual indoor units VI is set by unifying the indoor units 20A
and 20B performing heating operation and the other virtual indoor unit VI is set by
unifying the indoor units 20C and 20D performing cooling operation. Then, the operating
capacity calculation unit 41B calculates a total operating capacity of the indoor
units 20A and 20B performing cooling operation and a total operating capacity of the
indoor units 20C and 20D performing heating operation and stores the total operating
capacities in the data storage unit 33.
[0025] The relay processor 42 performs signal processing to relay data received by the first
transmission unit 31 to the second transmission unit 32 and performs signal processing
to relay data received by the second transmission unit 32 to the first transmission
unit 31. That is, when the first transmission unit 31 receives a signal, the relay
processor 42 determines whether to transmit the signal from the outdoor unit 10 to
predetermined indoor units 20A to 20D via the second transmission unit 32. Also, the
relay processor 42 performs processing based on the received data and determines which
of the plurality of indoor units 20A to 20D to transmit the signal to. Upon determining
to transmit the signal, the relay processor 42 transfers the signal to the second
transmission unit 32 and thereby transmits the signal to the appropriate ones of the
indoor units 20A to 20D.
[0026] Similarly, when the second transmission unit 32 receives a signal from any of the
indoor units 20A to 20D, the relay processor 42 determines whether to transfer the
signal to the outdoor unit 10 via the first transmission unit 31. Upon determining
to transmit the signal, the relay processor 42 transfers the signal to the first transmission
unit 31 and thereby transmits the signal to the outdoor unit 10.
[0027] A communication scheme (a protocol) in relation to the outdoor unit 10 may be either
identical to or different from a communication scheme (a protocol) in relation to
the indoor units 20A to 20D. When the communication schemes are different, the relay
processor 42 has a function to do protocol conversion before making signals transmitted.
The relay processor 42 may be designed to do not only protocol conversion of signals,
but also protocol conversion of data contained in the signals.
[0028] In so doing, the relay processor 42 performs processing to transmit a signal for,
for example, polling the outdoor unit 10, via the transmission line 3 and transmits
the signal to the outdoor unit 10 via the first transmission unit 31. Then, the relay
processor 42 processes data contained in a signal transmitted from the outdoor unit
10 and stores the data in the data storage unit 33. Also, the relay processor 42 performs
processing to transmit signals for polling the indoor units 20A to 20D via the transmission
lines 3 and makes the second transmission unit 32 transmit the signals. Then, the
relay processor 42 processes data contained in signals transmitted from the indoor
units 20A to 20D in response and stores the data, for example, in the data storage
unit 33. Although a case in which the transmission relay device 30 performs communication
control, including data collection, using a polling scheme is illustrated by example,
the transmission relay device 30 may conduct communication using well-known communication
control such as a token-based scheme or CSMA/CD scheme.
[0029] Here, using the addresses stored in the data storage unit 33, the relay processor
42 communicates, as a virtual indoor unit VI, with the outdoor unit 10 and relays
the signal transmitted from the outdoor unit 10 to the plurality of indoor units 20A
to 20D. The relay processor 42 is designed to collect refrigerant system data, address
data of a communication system, and the operating capacities of the indoor units 20A
to 20D from the outdoor unit 10 and the indoor units 20A to 20D and stores the data
in the data storage unit 33. Although a case in which various data is collected through
communication and stored in the data storage unit 33 by the relay processor 42 is
illustrated by example, data may be stored by being entered by a user via a keyboard
or another input device.
[0030] Fig. 6 is a schematic diagram showing an example of data stored in the data storage
unit of the transmission relay device of Fig. 4. As shown in Fig. 6, the data storage
unit 33 stores a first transmission address a1 of the outdoor unit 10 connected to
the same refrigerant system A, respective second transmission addresses b2 to b5 of
the plurality of indoor units 20A to 20D, and a first transmission address a3 of the
virtual indoor unit VI. The first transmission address a1 of the outdoor unit 10 and
the first transmission address a3 of the virtual indoor unit VI belong to a first
transmission address group while respective second transmission addresses b2 to b5
of the plurality of indoor units 20A to 20D belong to a second transmission address
group. Also, as addresses of the transmission relay device 30, the data storage unit
33 stores a first transmission address a2 used in communicating with the outdoor unit
10 via the first transmission unit 31 and a second transmission address b1 used in
communicating with the plurality of indoor units 20A to 20D. Furthermore, as information
about the plurality of indoor units 20A to 20D, the respective operating capacities
of the indoor units 20A to 20D are stored. Also, the data storage unit 33 stores data
needed by the computational processing unit 40 to perform processing.
[0031] Then, in communicating with the outdoor unit 10, the relay processor 42 acting as
a virtual indoor unit VI relays the communication using the first transmission addresses
a1 to a3. In particular, for example, when a request to transmit operating capacities
is made by the outdoor unit 10 to the indoor units 20A to 20D, the relay processor
42 transmits the virtual operating capacity of the virtual indoor unit VI to the outdoor
unit 10. When a signal to be transmitted to the outdoor unit 10 from the indoor units
20A to 20D is received via the second transmission unit 32, the relay processor 42
acting as a virtual indoor unit VI transmits the signal to the outdoor unit 10 via
the first transmission unit 31. Also, when data is received from the outdoor unit
10, the relay processor 42 acting as a virtual indoor unit VI selects one or more
indoor units to which the data is to be transmitted from among the plurality of indoor
units 20A to 20D and transmit the data via the second transmission unit 32. The relay
processor 42 selects one or more appropriate indoor units from the plurality of indoor
units 20A to 20D using any of various well-known routing techniques.
[0032] In this way, based on the addresses stored in the data storage unit 33, the relay
processor 42 relays communication between the outdoor unit 10 and virtual indoor unit
VI as well as communication between the virtual indoor unit VI and a plurality of
indoor units 20A to 20D. In other words, the computational processing unit 40 controls
communication by treating the first transmission unit 31 and second transmission unit
32 independently of each other.
[0033] Fig. 7 is a flowchart showing an operation example of the transmission relay device
of Fig. 4. Once the transmission relay device 30 is powered on, the transmission relay
device 30 starts communication with the outdoor unit 10 and with the indoor units
20A to 20D (Step ST1). Then, the transmission relay device 30 checks the number of
outdoor units 10 (Step ST2) and checks the number of connected indoor units 20A to
20D (Step ST3). When the outdoor unit 10 is not connected (NO in Step ST2) or when
none of the indoor units 20A to 20D is connected (NO in Step ST3), the transmission
relay device 30 determines that there is a communication error (Step ST4). Then, the
transmission relay device 30 is restarted or connection conditions of the transmission
lines 3 are checked, etc.
[0034] When one or more outdoor units 10 and one or more indoor units 20A to 20D are connected
(YES in Steps ST2 and ST3), information about the outdoor unit(s) 10 and indoor unit(s)
20A to 20D is collected and stored in the data storage unit 33 (Step ST5). In so doing,
information about a refrigerant system of each unit is collected and information such
as information about the addresses and operating capacities of the indoor units 20A
to 20D is collected. Subsequently, the relay processor 42 determines whether or not
any of the plurality of indoor units 20A to 20D is running with an operation mode
such as cooling operation specified (Step ST6). If there is no indoor unit 20A to
20D for which an operation mode is set (NO in Step ST6), the relay processor 42 waits
until any of the indoor units 20A to 20D starts operation (Steps ST6 and ST7).
[0035] On the other hand, when any of the indoor units 20A to 20D is running (YES in step
ST6), the virtual device setting unit 41 sets a virtual indoor unit VI (Step ST8).
In so doing, the operating capacities of the indoor units 20A to 20D running in any
operation mode are read out of the data storage unit 33 and saved in the data storage
unit 33 as an operating capacity of the virtual indoor unit VI. Subsequently, by acting
as the virtual indoor unit VI having the total operating capacity, the transmission
relay device 30 sends information to the outdoor unit 10. Then, the operating capacity
of the virtual indoor unit VI is recalculated each time the operation mode of any
of the indoor units 20A to 20D is changed halfway after the start of operation (Steps
ST6 to ST19).
[0036] Fig. 8 is a flowchart showing an example of control over the transmission relay device
of Fig. 5 in which a virtual indoor unit is set up. When a signal is received from
any of the indoor units 20A to 20D, the second transmission unit 32 takes out communication
data and transmits the data to the computational processing unit 40. Then, the computational
processing unit 40 processes the communication data, and the first transmission unit
31 specifies a destination (communication address) and sets transmit data. In so doing,
the data storage unit 33 stores the data resulting from the processing performed by
the computational processing unit 40. Subsequently, the transmission relay device
30 acting as the virtual indoor unit VI transmits a signal to the outdoor unit 10.
[0037] On the other hand, when communication are received from the outdoor unit 10, the
first transmission unit 31 extracts communication data and transmits the data to the
computational processing unit 40. Then, the computational processing unit 40 processes
the communication data, and the second transmission unit 32 sets a destination and
transmits signals to the indoor units 20A to 20D. In so doing, the data storage unit
33 stores the data such as the data resulting from the processing performed by the
computational processing unit 40.
[0038] According to the embodiment described above, since the virtual indoor unit VI set
by unifying the indoor units 20C and 20D controls communication with the outdoor unit
10, the number of connected units can be caused to appear smaller than it really is,
making it possible to increase the number of connected units. That is, as shown in
Fig. 5, when the outdoor unit 10 and four indoor units 20A to 20D communicate with
each other, instead of assigning four first transmission addresses, it is enough to
assign a first transmission address to a single virtual indoor unit VI. Consequently,
even if there is a restriction on the number of addresses within the system, the number
of connectable indoor units 20A to 20D can be expanded.
[0039] Furthermore, by conducting communication between the outdoor unit 10 and virtual
indoor unit VI, communication traffic can be reduced. That is, in conventional transmission
relay devices, the outdoor unit 10 needs to communicate with each of the four indoor
units 20A to 20D. On the other hand, when the indoor units are operated as a single
unified indoor unit via the transmission relay device 30, transmission is performed
from the outdoor unit 10 to the virtual indoor unit VI built in the transmission relay
device 30, signal processing is performed by the computational processing unit 40
of the transmission relay device 30, and then optimum communication are conducted
with the plurality of indoor units 20A to 20D. This reduces volumes of communication
on a first transmission line connecting between the outdoor unit 10 and transmission
relay device 30 and on second transmission lines connecting between the transmission
relay device 30 and indoor units 20A to 20D, making it possible to reduce the total
communication traffic.
[0040] Also, the virtual device setting unit 41 includes the number-of-virtual-units setting
unit 41A configured to set the number of virtual indoor units VI, and the operating
capacity calculation unit 41B configured to calculate the virtual operating capacity
of each of the virtual indoor units VI, of which the virtual number has been set by
the number-of-virtual-units setting unit 41A, using the operating capacities of the
indoor units stored in the data storage unit 33, and when the relay processor 42 transmits
the virtual operating capacities of the virtual indoor units VI to the outdoor unit
10, even if the virtual indoor units VI are set, operation control can be performed
on the outdoor unit 10 based on the operating capacities of the actual indoor units
20A to 20D.
[0041] In particular, when the virtual device setting unit 41 sets the number of virtual
indoor units VI for each operation mode of the plurality of indoor units 20A to 20D,
for example, in the case of simultaneous heating and cooling operation in which indoor
units 20A and 20B performing cooling operation and indoor units 20C and 20D performing
heating operation coexist, signal processing and communication processing can be performed
efficiently.
[0042] Embodiments of the present invention are not limited to the one described above,
and various changes can be made. For example, although a case in which all the plurality
of indoor units 20A to 20D are connected to the second transmission unit 32 has been
illustrated by example in the above embodiment, the plurality of indoor units 20A
to 20D may be connected to a plurality of transmission relay device 30 in a distributed
manner or part of the indoor units may be connected directly to the outdoor unit 10
without an intervening transmission relay device 30.
[0043] Also, although a case in which the virtual device setting unit 41 sets a virtual
indoor unit VI by unifying two or more indoor units 20A to 20D has been illustrated
by example in the above embodiment, when a plurality of outdoor units 10 are connected,
the virtual device setting unit 41 may have a function to set a virtual outdoor unit
by unifying multiple outdoor units 10.
Reference Signs List
[0044]
1 air-conditioning device 1A centralized control apparatus 2 refrigerant pipe 3 transmission
line 10 outdoor unit 11 compressor 12 flow switching device 13 outdoor-side heat exchanger
14 outdoor-side fan
15 accumulator 16 outdoor-side communication unit 17 outdoor-side control unit 18
outdoor-side storage unit 20A - 20D indoor unit 21 indoor-side heat exchanger 22 expansion
valve 23 indoor unit fan24 indoor-side communication unit 25 operating unit 26 indoor-side
control unit 27 indoor-side storage unit 30 transmission relay device 31 first transmission
unit
32 second transmission unit 33 data storage unit 40 computational processing unit
41 virtual device setting unit 41A number-of-virtual-units setting unit 41B operating
capacity calculation unit 42 relay processor A refrigerant system a1 - a3 first transmission
address b1 - b5 second transmission address VI virtual indoor unit
1. Übertragungsrelaisvorrichtung (30), die konfiguriert ist, um Kommunikation zwischen
einer Außeneinheit (10) und einer Vielzahl von Inneneinheiten (20A-20D), die durch
Kältemittelrohre (2) verbunden sind, zu übermitteln, wobei die Übertragungsrelaisvorrichtung
(30) Folgendes umfasst:
eine Datenspeichereinheit (33), die konfiguriert ist, um eine Adresse der Außeneinheit
(10) zu speichern und die Vielzahl der Inneneinheiten (20A-20D) zu adressieren, und
einen Relaisprozessor (42),
dadurch gekennzeichnet, dass die Übertragungsrelaisvorrichtung (30) weiter umfasst:
eine virtuelle Vorrichtungseinstellungseinheit (41), die konfiguriert ist, um eine
virtuelle Inneneinheit (VI) durch Vereinigen von zwei oder mehr der Vielzahl von Inneneinheiten
(20A-20D) einzustellen; wobei
die Datenspeichereinheit (33) konfiguriert ist, um eine Adresse der virtuellen Inneneinheit
(VI) zu speichern; und
der Relaisprozessor konfiguriert ist, um als die virtuelle Inneneinheit (VI) mit der
Außeneinheit (10) zu kommunizieren und ein von der Außeneinheit (10) übertragenes
Signal unter Verwendung der in der Datenspeichereinheit (33) gespeicherten Adressen
an die Vielzahl von Inneneinheiten (20A-20D) zu übermitteln, wobei
die virtuelle Vorrichtungseinstellungseinheit (41) aufweist:
eine Einstellungseinheit für eine Anzahl von virtuellen Einheiten (41A), die konfiguriert
ist, um die Anzahl der virtuellen Inneneinheiten (20A-20D) einzustellen, und
eine Betriebskapazitätberechnungseinheit (41B), die konfiguriert ist, um eine virtuelle
Betriebskapazität jeder der virtuellen Inneneinheiten (20A-20D), von denen eine virtuelle
Anzahl durch die Einstellungseinheit für eine Anzahl von virtuellen Einheiten (41A)
eingestellt ist, unter Verwendung der in der Datenspeichereinheit (33) gespeicherten
Betriebskapazitäten der Inneneinheiten (20A-20D) zu berechnen, und
der Relaisprozessor (42) die virtuellen Betriebskapazitäten der virtuellen Inneneinheiten
(20A-20D) an die Außeneinheit (10) überträgt.
2. Übertragungsrelaisvorrichtung (30) nach Anspruch 1, wobei die Einstellungseinheit
für eine Anzahl von virtuellen Einheiten (41A) die Anzahl der virtuellen Inneneinheiten
(VI) für jeden Betriebsmodus der Vielzahl von Inneneinheiten (20A-20D) einstellt.
3. Übertragungsrelaisvorrichtung (30) nach Anspruch 2, wobei
die Einstellungseinheit für eine Anzahl von virtuellen Einheiten (41A) zwei der virtuellen
Inneneinheiten (20A-20D) aus der Vielzahl von Inneneinheiten (20A-20D) einstellt,
wobei die zwei der virtuellen Inneneinheiten die virtuelle Inneneinheit (VI), die
den Heizbetrieb durchführt, und die virtuelle Inneneinheit (VI), die den Kühlbetrieb
durchführt, aufweisen, und
die Betriebskapazitätberechnungseinheit (41B) eine Gesamtbetriebskapazität der Inneneinheiten
(20A-20D), die den Heizbetrieb durchführen, und eine Gesamtbetriebskapazität der Inneneinheiten
(20A-20D), die den Kühlbetrieb durchführen, berechnet.
4. Übertragungsrelaisvorrichtung (30) nach einem der Ansprüche 1 bis 3, wobei der Relaisprozessor
(42) verschiedene Kommunikationsschemata zwischen Kommunikation mit der Außeneinheit
(10) und Kommunikation mit den Inneneinheiten (20A-20D) verwendet.
5. Klimaanlage, die die Übertragungsrelaisvorrichtung (30) nach einem der Ansprüche 1
bis 4 umfasst.
1. Dispositif de relais de transmission (30) configuré pour relayer une communication
entre une unité extérieure (10) et une pluralité d'unités intérieures (20A-20D) reliées
par des conduites de fluide frigorigène (2), le dispositif de relais de transmission
(30) comprenant :
une unité de mémorisation de données (33) configurée pour mémoriser une adresse de
l'unité extérieure (10) et des adresses de la pluralité d'unités intérieures (20A-20D),
et
un processeur de relais (42),
caractérisé en ce qu'il comprend en outre
une unité de définition de dispositif virtuel (41) configurée pour définir une unité
intérieure virtuelle (VI) en unifiant deux de la pluralité d'unités intérieures (20A-20D)
ou plus ; dans lequel
l'unité de mémorisation de données (33) est configurée pour mémoriser une adresse
de l'unité intérieure virtuelle (VI) ; et
le processeur de relais est configuré pur communiquer en tant qu'unité intérieure
virtuelle (VI) avec l'unité extérieure (10) et relayer un signal transmis à partir
de l'unité extérieure (10) à la pluralité d'unités intérieures (20A-20D), au moyen
des adresses mémorisées dans l'unité de mémorisation de données (33), dans lequel
l'unité de définition de dispositif virtuel (41) inclut
une unité de définition de nombre d'unités virtuelles (41A) configurée pour définir
le nombre des unités intérieures virtuelles (20A-20D), et
une unité de calcul de capacité opérationnelle (41B) configurée pour calculer la capacité
opérationnelle virtuelle de chacune des unités intérieures virtuelles (20A-20D), dont
un nombre virtuel est défini par l'unité de définition de nombre d'unités virtuelles
(41A), au moyen des capacités opérationnelles des unités intérieures (20A-20D) mémorisées
dans l'unité de mémorisation de données (33), et
le processeur de relais (42) transmet les capacités opérationnelles virtuelles des
unités intérieures virtuelles (20A-20D) à l'unité extérieure (10).
2. Dispositif de relais de transmission (30) selon la revendication 1, dans lequel l'unité
de définition de nombre d'unités virtuelles (41A) définit le nombre des unités intérieures
virtuelles (VI) pour chaque mode d'opération de la pluralité d'unités intérieures
(20A-20D).
3. Dispositif de relais de transmission (30) selon la revendication 2, dans lequel
l'unité de définition de nombre d'unités virtuelles (41A) définit deux des unités
intérieures virtuelles (20A-20D) parmi la pluralité d'unités intérieures (20A-20D),
les deux unités intérieures virtuelles incluant l'unité intérieure virtuelle (VI)
réalisant l'opération de chauffage et l'unité intérieure virtuelle (VI) réalisant
l'opération de refroidissement, et
l'unité de calcul de capacité opérationnelle (41B) calcule une capacité opérationnelle
totale des unités intérieures (20A-20D) réalisant l'opération de chauffage et une
capacité opérationnelle totale des unités intérieures (20A-20D) réalisant l'opération
de refroidissement.
4. Dispositif de relais de transmission (30) selon l'une quelconque des revendications
1 à 3, dans lequel le processeur de relais (42) utilise des schémas de communication
différents entre une communication avec l'unité extérieure (10) et une communication
avec les unités intérieures (20A-20D).
5. Appareil de climatisation comprenant le dispositif de relais de transmission (30)
selon l'une quelconque des revendications 1 à 4.