WO2020174622A1 - Air conditioning device - Google Patents

Air conditioning device Download PDF

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Publication number
WO2020174622A1
WO2020174622A1 PCT/JP2019/007652 JP2019007652W WO2020174622A1 WO 2020174622 A1 WO2020174622 A1 WO 2020174622A1 JP 2019007652 W JP2019007652 W JP 2019007652W WO 2020174622 A1 WO2020174622 A1 WO 2020174622A1
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WO
WIPO (PCT)
Prior art keywords
control signal
signal line
gas pipe
pipe side
liquid pipe
Prior art date
Application number
PCT/JP2019/007652
Other languages
French (fr)
Japanese (ja)
Inventor
裕一 庄司
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2021501465A priority Critical patent/JP7138763B2/en
Priority to PCT/JP2019/007652 priority patent/WO2020174622A1/en
Publication of WO2020174622A1 publication Critical patent/WO2020174622A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F11/36—Responding to malfunctions or emergencies to leakage of heat-exchange fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/49—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring ensuring correct operation, e.g. by trial operation or configuration checks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/88—Electrical aspects, e.g. circuits

Definitions

  • This invention relates to an air conditioner.
  • non-combustible refrigerants such as R410A have been used in air conditioners, but due to the tightening of European F gas regulations, GWP (Global Warming Potential) such as R32 or R152a has been improved. A shift to lower refrigerants is required. However, these refrigerants may have combustibility.
  • Patent Document 1 describes an air conditioner that solves the above problems.
  • the air conditioner includes a refrigerant sensor that detects leakage of the refrigerant, and a relay cutoff valve that shuts off the flow of the refrigerant into the indoor unit by being closed according to an instruction from the control unit.
  • the control unit closes the relay shutoff valve to suppress the refrigerant leakage.
  • the shutoff valve is located outside the outdoor unit of the air conditioner, and is housed in a housing provided outdoors with the outdoor unit. Therefore, when the refrigerant sensor detects the leakage of the refrigerant, the outdoor unit receives the signal indicating the leakage of the refrigerant from the indoor unit, and controls the shutoff valve to the closed state according to the signal. In many cases.
  • a signal for control also referred to as a control signal
  • wiring is required for transmitting a control signal from the outdoor unit to the shutoff valve.
  • the shutoff valve and the mechanism for driving the shutoff valve will be collectively referred to as a shutoff valve.
  • shutoff valve one that shuts off the flow of the refrigerant in the liquid pipe of the refrigerant circuit (also referred to as a shutoff valve for the liquid pipe) and one that shuts off the flow of the refrigerant in the gas pipe (also called the shutoff valve for the gas pipe) )
  • a control signal transmission for controlling the liquid pipe cutoff valve and a control signal transmission for controlling the gas pipe cutoff valve. 2 types of wiring are required.
  • there are two types of wiring for controlling the shutoff valve there is a possibility that an error may occur or extra time may be spent when the operator installs the wiring.
  • the present invention has been made to solve the above problems, and an object of the present invention is to provide an air conditioner capable of simplifying and speeding up wiring installation work.
  • An air conditioner is an air conditioner in which a refrigerant is circulated inside, heat is exchanged between the refrigerant and air, and an air-conditioning target space is air-conditioned.
  • a liquid pipe side control signal line for transmitting the control signal from the control means, and a gas pipe cutoff valve for cutting off the flow of the refrigerant in the gas pipe, the control signal from the control means.
  • a gas pipe side control signal line for transmission, a first connector, and a second connector fitted to the first connector are provided, and one end of the liquid pipe side control signal line is connected to the control means.
  • a second liquid having the other end connected to the first liquid pipe side control signal line and one end connected to the liquid pipe cutoff valve, and the other end connected to the second connector
  • a pipe side control signal line, the gas pipe side control signal line having a first gas pipe side control signal line having one end connected to the control means and the other end connected to the first connector;
  • One end is for connection with the shutoff valve for the gas pipe, and the other end has a second gas pipe side control signal line connected to the second connector.
  • the control signal is transmitted to the other end of the wiring, one end of which is connected to the outdoor unit, and the gas pipe cutoff valve.
  • the other end of the wiring, one end of which is connected to the outdoor unit is connected to the common first connector.
  • the other end of the wiring whose one end is connected to the liquid pipe cutoff valve and the wiring for transmitting the control signal to the gas pipe cutoff valve is connected to a common second connector that is fitted to the first connector.
  • FIG. 3 is a schematic diagram illustrating a configuration for suppressing electromagnetic interference and wear on a control signal line according to the first embodiment of the present invention.
  • FIG. 3 is a schematic diagram illustrating the coating of control signal lines in the first embodiment of the present invention.
  • FIG. 3 is a schematic cross-sectional view of a multiplex control signal line according to the first embodiment of the present invention.
  • FIG. 9 is a schematic cross-sectional view of a multiplex control signal line according to the second embodiment of the present invention.
  • FIG. 1 is a diagram schematically showing an air conditioner according to Embodiment 1 of the present invention.
  • the air conditioning apparatus 1 according to Embodiment 1 of the present invention includes an indoor unit 2, an outdoor unit 3, and a relay unit 4 in a refrigerant circuit for circulating a refrigerant. Further, the air conditioner 1 is provided with a remote controller 5 outside the unit.
  • the indoor unit 2 is installed in a room which is a space to be air-conditioned (air-conditioned space), and the outdoor unit 3 is installed in a place outside the air-conditioned space.
  • the relay unit 4 according to the first embodiment of the present invention is provided outside the outdoor unit 3 and on the back side of the outdoor unit 3 within a predetermined distance from the knockout hole 30 of the outdoor unit 3.
  • the “back surface of the outdoor unit 3 ” here is a surface opposite to a surface provided with a blow-out port for blowing the air that has undergone heat exchange inside the outdoor unit 3 to the outside. ..
  • the knockout hole 30 is a hole provided for passing the refrigerant circuit through the outdoor unit 3. Further, the above-mentioned predetermined distance is appropriately determined according to the length of the control signal line, the size of the outdoor unit 3, the size of the relay unit 4, etc., which will be described later.
  • the installation location of the relay unit 4 is not limited to that described above, and the relay unit 4 may be installed within a predetermined distance from the knockout hole for passing the refrigerant pipe 6 in the indoor unit 2.
  • the air conditioner 1 includes a refrigerant pipe 6 that is a part of the refrigerant circuit and that allows the refrigerant between the indoor unit 2 and the outdoor unit 3 to flow through the relay unit 4.
  • the refrigerant pipes 6 There are two types of the refrigerant pipes 6, that is, a liquid pipe 6F through which a liquid refrigerant flows and a gas pipe 6G through which a gaseous refrigerant flows.
  • the refrigerant pipe 6 is provided with a shutoff valve 7 (see FIGS. 3 and 4 etc.) for shutting off the flow of the refrigerant.
  • the liquid pipe 6F is provided with a shutoff valve 7 (also referred to as a liquid pipe shutoff valve 7F) that shuts off the flow of the liquid refrigerant (see FIGS.
  • shutoff valve 7 also referred to as a gas pipe shutoff valve 7G
  • shutoff valves 7 are housed inside a casing that is an outer frame of the relay unit 4.
  • the indoor unit 2 has a refrigerant sensor 20 for detecting leakage of the refrigerant and an indoor control unit 21.
  • the refrigerant sensor 20 is, for example, a semiconductor gas sensor.
  • the refrigerant sensor 20 and the indoor control unit 21 are connected by a signal line.
  • the said signal line which connects the refrigerant sensor 20 and the indoor control part 21 is described as the sensor signal line 22.
  • the refrigerant sensor 20 detects the refrigerant leakage
  • the refrigerant sensor 20 transmits a detection signal indicating the refrigerant leakage to the indoor control unit 21 via the sensor signal line 22.
  • the detection signal indicating the leakage of the refrigerant by the refrigerant sensor 20 will be referred to as a leakage detection signal.
  • the indoor control unit 21 and the remote controller 5 are connected by a signal line.
  • the signal line that connects the indoor control unit 21 and the remote controller 5 will be referred to as a remote controller signal line 8.
  • the remote controller 5 transmits various signals corresponding to the content of the instruction to the indoor control unit 21 via the remote controller signal line 8. ..
  • the various signals are, for example, a signal for causing the air conditioning apparatus 1 to perform a driving operation, a signal for stopping the driving, or the like.
  • the signal from the remote controller 5 to the indoor control unit 21 is also referred to as a remote controller signal below.
  • the indoor unit 2 and the outdoor unit 3 execute operations in response to a signal from the remote controller 5.
  • the indoor control unit 21 includes, for example, a board on which an integrated circuit such as an FPGA (Field Programmable Gate Array) is mounted, or an MPU (Microprocessor) on which a memory is mounted.
  • the indoor control unit 21 controls the indoor unit 2 based on a leak detection signal received from the refrigerant sensor 20, a remote controller signal received from the remote controller 5, or the like.
  • the indoor control unit 21 is connected to the control unit 31 included in the outdoor unit 3 and controlling the outdoor unit 3 by a signal line.
  • the signal line connecting the indoor control unit 21 and the control unit 31 will be referred to as an inter-unit signal line 9.
  • the control unit 31 includes, for example, a substrate on which an integrated circuit such as an FPGA (Field Programmable Gate Array) is mounted, or an MPU (Microprocessor) on which a memory is mounted.
  • the control unit 31 controls the outdoor unit 3 according to various signals received from the indoor control unit 21 via the inter-unit signal line 9.
  • the indoor control unit 21 When the leak detection signal is received from the refrigerant sensor 20, the indoor control unit 21 sends a signal indicating the refrigerant leak and a signal for suppressing the leak via the inter-unit signal line 9 to the control unit. Send to 31.
  • coolant transmitted from the indoor control part 21 to the control part 31 is described as a leakage suppression signal.
  • the leakage suppression signal may be generated by the indoor control unit 21 that has received the leakage detection signal and transmitted to the control unit 31. However, by the input to the remote controller 5 from an operator who notices the leakage of the refrigerant, It may be transmitted from the controller 5 to the control unit 31 via the indoor control unit 21 and the inter-unit signal line 9.
  • the control unit 31 is connected by a signal line to a mechanism for opening and closing the shutoff valve 7, which is housed inside a casing that is an outer frame of the relay unit 4.
  • the signal line which connects the control part 31 and the mechanism for opening and closing the shutoff valve 7 is described as a control signal line.
  • the mechanism and the shutoff valve 7 are integrated, and the one including them is referred to as the shutoff valve 7.
  • the control signal line includes a liquid pipe side control signal line 11 for transmitting a control signal to the liquid pipe cutoff valve 7F provided in the liquid pipe 6F, and a control signal for the gas pipe cutoff valve 7G provided in the gas pipe 6G.
  • the liquid pipe side control signal line 11 connected to the liquid pipe cutoff valve 7F and the gas pipe side control signal line 12 connected to the gas pipe cutoff valve 7G are passed through the knockout hole 30 into the outdoor unit 3. It is connected to the control unit 31.
  • the control signal line is connected to the outdoor unit.
  • the unit 3 may be fixed by one or more clamps 32 provided on the inner side surface (the surface perpendicular to the installation surface) of the housing of the outer frame of the unit 3, and may be connected to the control unit 31. The number of clamps 32 is appropriately determined according to the length of the control signal line.
  • the control unit 31 controls the shutoff valve 7 by transmitting a control signal to the shutoff valve 7 via a control signal line. Specifically, when receiving the leakage suppression signal, the control unit 31 stops the operation of the outdoor unit 3 and transmits the control signal to the liquid pipe cutoff valve 7F via the liquid pipe side control signal line 11. Then, the liquid pipe cutoff valve 7F is closed, and a control signal is transmitted to the gas pipe cutoff valve 7G via the gas pipe side control signal line 12 to close the gas pipe cutoff valve 7G. As a result, the circulation of the refrigerant in the liquid pipe 6F and the gas pipe 6G is blocked, and the inflow of the refrigerant into the indoor unit 2 is blocked.
  • the configuration included in the air conditioner 1 has been described above, and when the leakage of the refrigerant is detected, which component transmits what signal through which wiring to which component, and how It has been described whether to suppress the leakage of the refrigerant.
  • the wiring described above is an example, and other wiring such as wiring connecting the shutoff valve 7 and the indoor control unit 21 or wiring connecting the control unit 31 and the remote controller 5 may be provided. .. Further, the control signal for the shutoff valve 7 may be transmitted by the indoor control unit 21.
  • the air conditioning apparatus 1 according to Embodiment 1 of the present invention further has the following configuration in order to suppress such mistakes.
  • FIG. 2 is a schematic diagram showing a connector and wiring in the first embodiment of the present invention.
  • the control signal line in the first embodiment of the present invention is connected via the connector 14 between the control unit 31 and the shutoff valve 7. The details will be described below.
  • the connector 14 has a first connector 14A and a second connector 14B that fits with the first connector 14A. It is desirable that the connector 14 has a shape, a pattern, etc. that can be recognized by the operator in the upper, lower, left and right directions.
  • the liquid pipe side control signal line 11 is connected to each other by fitting the first connector 14A and the second connector 14B, and the first liquid pipe side control signal line 11A and the second liquid pipe are connected. It is constituted by the side control signal line 11B.
  • the gas pipe side control signal line 12 in the first embodiment of the present invention is connected to the first gas pipe side control signal line 12A and the first gas pipe side control signal line 12A which are connected to each other by fitting the first connector 14A and the second connector 14B. It is constituted by the two gas pipe side control signal line 12B.
  • One end of each of the first liquid pipe side control signal line 11A and the first gas pipe side control signal line 12A is connected to the control unit 31.
  • the other ends of these control signal lines are connected to the first connector 14A.
  • One end of the second liquid pipe side control signal line 11B is connected to the liquid pipe cutoff valve 7F.
  • One end of the second gas pipe side control signal line 12B is connected to the gas pipe cutoff valve 7G. The other ends of these control signal lines are connected to the second connector 14B.
  • the control unit 31 and the shutoff valve 7 are connected. With the connection, the control unit 31 can send a control signal to the shutoff valve 7.
  • the air conditioning apparatus 1 further includes wiring for determining the presence or absence of the controllable shutoff valve 7.
  • the wiring will be referred to as the determination wiring 13.
  • the "presence/absence of controllable shutoff valve 7" also includes "presence/absence of connection with control unit 31" by the control signal line. If the shutoff valve 7 and the control unit 31 are connected, it is determined that the shutoff valve 7 is present, and if the shutoff valve 7 and the control unit 31 are not connected, it is determined that the shutoff valve 7 is not present.
  • the judgment wiring 13 is composed of a first judgment wiring 13A and a second judgment wiring 13B which are connected to each other by fitting the first connector 14A and the second connector 14B.
  • One end of the first determination wiring 13A is connected to the control unit 31.
  • the other end of the first determination wiring 13A is connected to the first connector 14A.
  • the second determination wiring 13B is short-circuited and connected to the second connector 14B.
  • the control unit 31 detects the fitting of the first connector 14A and the second connector 14B from the change in the current, voltage, or the like detected by the conduction of the determination wiring 13. Further, when the second liquid pipe side control signal line 11B is connected to the liquid pipe shutoff valve 7F, the control unit 31 causes the liquid pipe side control signal line by fitting the first connector 14A and the second connector 14B. It is determined from the change in the current or voltage detected by the conduction of 11 that there is a controllable shutoff valve 7F for the liquid pipe.
  • the control unit 31 further controls the gas pipe side control signal by fitting the first connector 14A and the second connector 14B. It is determined from the change in the current, voltage, or the like detected by the conduction of the line 12 that the controllable shutoff valve for gas pipe 7G is present.
  • control unit 31 determines that the controllable shutoff valve 7 is present, the control unit 31 transmits a control signal to the shutoff valve 7 to control the shutoff valve 7 as necessary, such as reception of a leakage suppression signal.
  • control unit 31 determines that there is no controllable shutoff valve 7, the control unit 31 does not perform the control operation for the shutoff valve 7 and the operation associated with the control operation. As a result, it is possible to omit unnecessary operation when there is no controllable shutoff valve 7.
  • the control unit 31 may send the determination result of the presence or absence of the shutoff valve 7 to the indoor control unit 21 via the inter-unit signal line 9.
  • the indoor control unit 21 may transmit the received determination result to the remote controller 5 via the remote controller signal line 8.
  • the user or the operator can know the determination result via the remote controller 5 or the indoor unit 2, and the shutoff valve can be used as a countermeasure against refrigerant leakage.
  • Appropriate treatment such as installation of 7 or connection of control signal lines can be performed.
  • the indoor control unit 21 or the remote controller 5 has the information that the controllable shutoff valve 7 is present, and the leakage of the refrigerant is detected
  • the indoor control unit 21 May transmit a leakage suppression signal including information urging control for closing the shut-off valve 7 to the control unit 31.
  • the control unit 31 can generate the control signal according to the leakage suppression signal without referring to the determination result of the presence or absence of the shutoff valve 7. Therefore, the processing by the control unit 31 can be simplified and speeded up.
  • the indoor control unit 21 or the remote controller 5 when the indoor control unit 21 or the remote controller 5 has the information that the controllable shutoff valve 7 does not exist, and the leakage of the refrigerant is detected, the indoor control unit 21 May transmit to the control unit 31 a leakage suppression signal that does not include information that prompts control of the shutoff valve 7. This simplifies and speeds up the processing by the indoor control unit 21. Then, the control unit 31 can generate a control signal according to the leakage suppression signal without referring to the determination result of the presence or absence of the shutoff valve 7, and omits useless processing such as generation of a control signal for the shutoff valve 7. be able to.
  • the first liquid pipe side control signal line 11A, the first gas pipe side control signal line 12A, and the first determination wiring 13A are one first connector 14A. It is connected to the.
  • the second liquid pipe side control signal line 11B, the second gas pipe side control signal line 12B, and the second determination wiring 13B are connected to one second connector 14B fitted to the first connector 14A. ing.
  • the operator can connect the control signal line for controlling the shutoff valve 7 simply by connecting the first connector 14A and the second connector 14B. Therefore, it is possible to reduce the time required for the operator to attach the control signal line, and it is possible to suppress the operator's mistake in attaching the control signal line.
  • the determination wiring 13 is connected and conductive, and the control signal line is connected, so that the change in current, voltage, or the like due to the conduction of the determination wiring 13
  • the operator or the control unit 31 or the like can determine whether or not the control signal line is connected. Further, when it is determined that the control signal line is connected, the operator or the control unit 31 or the like can confirm whether or not the controllable shutoff valve 7 is present by the current flowing through the control signal line. ..
  • the shutoff valve 7 may not be able to be properly controlled except when there is a mistake in mounting the control signal line or when the control signal line is not connected.
  • the control signal line may be subjected to electromagnetic interference, or the control signal line may be worn out so that the signal cannot be properly transmitted.
  • the control signal line does not always fit inside the housing such as the outdoor unit 3 and the relay unit 4 and may be exposed to the outdoor environment. There is a possibility that noise will be introduced into the signal due to radio waves from other sources.
  • FIG. 3 is a schematic diagram illustrating a configuration for suppressing electromagnetic interference and wear on the control signal line according to the first embodiment of the present invention.
  • the liquid pipe side control signal line 11 and the gas pipe side control signal line 12 in the first embodiment of the present invention cover the covering member 15 (see FIG. 5) over the exposed range of the housing. (Refer to FIG. 3), they are collectively covered to form one multiplexed control signal line 16.
  • FIG. 4 is a schematic diagram exemplifying covering of the control signal line in the first embodiment of the present invention.
  • the liquid pipe side control signal line 11 includes one for grounding and one for non-grounding.
  • the liquid pipe side control signal line 11 for grounding will be described below as a liquid pipe side wiring 11C for grounding.
  • the liquid pipe side control signal line 11 for non-grounding will be described below as a liquid pipe side wiring 11D for non-grounding.
  • a control signal is transmitted from the control unit 31 to the liquid pipe cutoff valve 7F via the non-grounded liquid pipe side wiring 11D.
  • the grounding liquid pipe side wiring 11C is for removing noise of the control signal transmitted to the non-grounding liquid pipe side wiring 11D.
  • the gas pipe side control signal line 12 includes one for grounding and one for non-grounding.
  • the gas pipe side control signal line 12 for grounding is described as the gas pipe side wiring 12C for grounding.
  • the gas pipe side control signal line 12 for non-grounding will be referred to as a non-grounding gas pipe side wiring 12D below.
  • a control signal is transmitted from the control unit 31 to the gas pipe cutoff valve 7G through the non-grounded gas pipe side wiring 12D.
  • the grounding gas pipe side wiring 12C is for removing noise of the control signal transmitted to the non-grounding gas pipe side wiring 12D.
  • the grounding liquid pipe side wiring 11C, the non-grounding liquid pipe side wiring 11D, the grounding gas pipe side wiring 12C, and the non-grounding gas pipe side wiring 12D are exposed to the outside of the housing.
  • the covering member 15 (see FIG. 5) is collectively covered over the range to form a single multiple control signal line 16.
  • FIG. 5 is a schematic cross-sectional view of the multiplex control signal line according to the first embodiment of the present invention.
  • the grounding liquid pipe side wiring 11C, the non-grounding liquid pipe side wiring 11D, the grounding gas pipe side wiring 12C, and the non-grounding gas pipe side wiring 12D are collectively covered by the covering member 15. It was done. Further, the grounding liquid pipe side wiring 11C, the non-grounding liquid pipe side wiring 11D, the grounding gas pipe side wiring 12C, and the non-grounding gas pipe side wiring 12D included in the multiplex control signal line 16 cause electromagnetic interference. In order to prevent abrasion, it is covered by the covering member 15 so as not to be exposed to the outside.
  • the covering member 15 is a material having excellent weather resistance, flame retardancy, electromagnetic interference, and the like, and is appropriately selected depending on the temperature, humidity, radio wave condition of the surrounding environment, and the like. Thereby, even if the control signal line is exposed to the outside of the housing such as the outdoor unit 3 and the relay unit 4, it is possible to suppress wear and electromagnetic interference. Further, the liquid pipe side control signal line 11 and the gas pipe side control signal line 12 are combined into one line, so that the operator can insert the liquid pipe side control signal line 11 and the gas pipe side control signal line into the knockout hole 30. 12 and 12 can be put together easily and quickly (see FIG. 3).
  • the other ends of the first liquid pipe side control signal line 11A and the first gas pipe side control signal line 12A, each one end of which is connected to the control unit 31. are connected to one first connector 14A.
  • the operator can simply and quickly turn on the control signal line for transmitting the control signal from the control unit 31 to the shutoff valve 7 only by the process of connecting the first connector 14A and the second connector 14B. Therefore, the control signal is appropriately transmitted from the control unit 31 to the shutoff valve 7.
  • the determination wiring 13 for determining the presence or absence of the controllable shutoff valve 7 is further provided, and is a part of the determination wiring 13.
  • the first determination wiring 13A has one end connected to the control unit 31 and the other end connected to the first connector 14A.
  • the second determination wiring 13B which is the remaining part of the determination wiring 13, is connected to one end of each of the second liquid pipe side control signal line 11B and the second gas pipe side control signal line 12B. It is short-circuited and connected to the second connector 14B fitted to the connector 14A.
  • the determination wiring 13 is electrically connected by the connection between the first connector 14A and the second connector 14B. Then, by the conduction, the operator or the control unit 31 or the like can know that the control signal line is connected, and can determine the presence or absence of the shutoff valve 7 by the current flowing in the control signal line when the control signal line is connected.
  • the control unit 31 that determines the presence or absence of the shutoff valve 7 by using the determination wiring 13 uses the determination result as the indoor control of the indoor unit 2. It may be transmitted to at least one of the unit 21 and the remote controller 5. The transmission of the determination result from the control unit 31 to the indoor control unit 21 is performed by the inter-unit signal line 9. On the other hand, the transmission of the determination result from the control unit 31 to the remote controller 5 may be relayed by the indoor control unit 21 and performed by the inter-unit signal line 9 and the remote controller signal line 8, but the control unit 31. If the remote controller 5 and the remote controller 5 are connected by wire or wirelessly, the determination result may be directly transmitted from the control unit 31 to the remote controller 5.
  • the indoor control unit 21 or the remote controller 5 obtains the determination result regarding the presence or absence of the shutoff valve 7, whereby the operator or the user can be notified of the determination result and appropriate treatment can be prompted. Further, in the indoor control unit 21 or the remote controller 5, the signal indicating the instruction to the control unit 31, such as the leakage suppression signal, which is transmitted to the control unit 31, can be set according to the presence or absence of the shutoff valve 7. The processing in the control unit 31 can be reduced.
  • the indoor control unit 21 that has received the leakage detection signal from the refrigerant sensor 20 detects the inter-unit
  • the leakage suppression signal is transmitted to the control unit 31 via the signal line 9.
  • the control unit 31 stops the air conditioning operation of the outdoor unit 3 according to the leakage suppression signal, and controls the shutoff valve 7 to be in the closed state when the shutoff valve 7 is present.
  • the casing for accommodating the shutoff valve 7 in the outer frame of the relay unit 4 is provided in the knockout hole 30 of the outdoor unit 3 or the indoor unit 2. Install within a predetermined distance from the knockout hole. Thereby, the control signal line can be connected to the control unit 31 or the indoor control unit 21 without making the control signal line longer than necessary. In addition, it is possible to reduce processing such as making a new hole in the indoor unit 2 or the outdoor unit 3 by the operator, and prevent a decrease in the strength of the housing of the indoor unit 2 or the outdoor unit 3 that may occur due to the new hole. You can reduce processing such as making a new hole in the indoor unit 2 or the outdoor unit 3 by the operator, and prevent a decrease in the strength of the housing of the indoor unit 2 or the outdoor unit 3 that may occur due to the new hole. You can
  • 11D, the gas pipe side wiring 12C for grounding, and the gas pipe side wiring 12D for non-grounding are collectively covered by the covering member 15 to form one multiple control signal line 16. Further, these control signal lines are covered by the covering member 15 so as not to be exposed to the outside. As a result, it is possible to suppress wear of the control signal line and electromagnetic interference, and it becomes easy for the operator to handle.
  • the multiple control signal line 16 in the first embodiment is one in which four control signal lines are collectively covered by the covering member 15.
  • the multiplex control signal line 16 includes as many as four control signal lines, there is a limit in reducing the outer diameter.
  • the non-grounding liquid pipe side wiring 11D and the non-grounding gas pipe side wiring 12D are connected, and the connected control signal line and the grounding liquid pipe side wiring 11C are connected.
  • the grounding gas pipe side wiring 12C is collectively covered with the covering member 15 to form one multiplex control signal line 17.
  • FIG. 6 is a schematic diagram exemplifying covering of control signal lines in the second embodiment of the present invention.
  • the non-grounding liquid pipe side wiring 11D and the non-grounding gas pipe side wiring 12D are connected to form one line.
  • the connected non-grounding liquid pipe side wiring 11D and non-grounding gas pipe side wiring 12D are also referred to as a common non-grounding wiring 18.
  • the connection is performed by crimp terminal connection, bifurcated terminal connection, or the like.
  • the three control signal lines are collectively covered by the covering member 15 to form one multiplexed control signal line 17.
  • FIG. 7 is a schematic cross-sectional view of the multiplex control signal line 17 according to the second embodiment of the present invention. It can be seen that the multiplex control signal line 17 is formed by covering the grounding liquid pipe side wiring 11C, the grounding gas pipe side wiring 12C, and the common non-grounding wiring 18 together by the covering member 15. Similar to the case of the first embodiment, the covering member 15 covers the grounding liquid pipe side wiring 11C, the grounding gas pipe side wiring 12C, and the common non-grounding wiring 18 so as not to be exposed to the outside.
  • the relay unit 4 two of the four control signal lines to be grounded are connected to form one common non-grounding wiring. It is set at 18. Then, over the range in which the control signal lines are exposed to the outside of the housing such as the outdoor unit 3 and the relay unit 4, the three control signals of the two ground-side control signal lines and the common non-grounding wiring 18 are provided.
  • the wires are collectively covered by the covering member 15 to form one multiplexed control signal line 17.
  • the outer diameter of the multiplex control signal line 17 is reduced, the operation of inserting the multiplex control signal line 17 into the knockout hole 30 is facilitated, and the operability can be improved. Further, the coverage of the covering member 15 is reduced, and the material cost can be reduced.

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  • Air Conditioning Control Device (AREA)

Abstract

An air conditioning device (1) includes: a liquid pipe side control signal line (11) for transmitting a control signal from a control means to a liquid pipe shut-off valve (7F) for shutting off circulation of a liquid refrigerant in a liquid pipe (6F) for circulation of the liquid refrigerant; a gas pipe side control signal line (12) for transmitting a control signal from the control means to a gas pipe shut-off valve (7G) for shutting off circulation of a gas refrigerant in a gas pipe (6G) for circulation of the gas refrigerant; a first connector (14A); and a second connector (14B) that engages with the first connector. The liquid pipe side control signal line includes a first liquid pipe side control signal line including one end connected to the control means and the other end connected to the first connector and a second liquid pipe side control signal line including one end for connecting to the liquid pipe shut-off valve and the other end connected to the second connector. The gas pipe side control signal line includes a first gas pipe side control signal line including one end connected to the control means and the other end connected to the first connector and a second gas pipe side control signal line including one end for connecting to the gas pipe shut-off valve and the other end connected to the second connector.

Description

空気調和装置Air conditioner
　この発明は、空気調和装置に関するものである。 This invention relates to an air conditioner.
　従来、空気調和装置には、例えばＲ４１０Ａのような不燃性の冷媒が用いられてきたが、欧州Ｆガス規制の強化により、Ｒ３２またはＲ１５２ａ等のＧＷＰ（Global　Warming　Potential、地球温暖化係数）がより低い冷媒への移行が求められている。しかし、これらの冷媒は燃焼性を有する場合もある。 In the past, non-combustible refrigerants such as R410A have been used in air conditioners, but due to the tightening of European F gas regulations, GWP (Global Warming Potential) such as R32 or R152a has been improved. A shift to lower refrigerants is required. However, these refrigerants may have combustibility.
　燃性性を有する冷媒を空気調和装置に対して用いる場合には、冷媒配管からの居住空間（室内とも記載する）への冷媒の漏洩が抑制される必要がある。また、万が一、冷媒の漏洩が発生した場合においても燃焼を誘発する濃度に達しないよう、更なる漏洩を抑制する必要がある。 When using a flammable refrigerant for an air conditioner, it is necessary to prevent the refrigerant from leaking from the refrigerant pipe to the living space (also referred to as the room). Further, in the unlikely event that the refrigerant leaks, it is necessary to prevent further leakage so as not to reach the concentration that induces combustion.
　特許文献１には、上記問題を解決する空気調和装置について記載されている。当該空気調和装置は、冷媒の漏洩を検知する冷媒センサと、制御部からの指示により閉止させられることによって室内ユニットへの冷媒の流入を遮断する中継遮断弁と、を備える。当該空気調和装置においては、冷媒センサが冷媒の漏洩を検知すると、制御部が中継遮断弁を閉止することによって冷媒の漏洩を抑制する。 Patent Document 1 describes an air conditioner that solves the above problems. The air conditioner includes a refrigerant sensor that detects leakage of the refrigerant, and a relay cutoff valve that shuts off the flow of the refrigerant into the indoor unit by being closed according to an instruction from the control unit. In the air conditioner, when the refrigerant sensor detects the refrigerant leakage, the control unit closes the relay shutoff valve to suppress the refrigerant leakage.
特開２０１８－７７０４０号公報JP, 2018-77040, A
　遮断弁は、多くの場合、空気調和装置の室外ユニットの外側であって、室外ユニットと共に室外に設けられた筐体内に収容される。このため、冷媒センサが冷媒の漏洩を検知した場合には、室外ユニットが、室内ユニットから冷媒の漏洩を示す信号を受信し、当該信号に応じて遮断弁を閉状態へと制御するものとなる場合が多い。室外ユニットが遮断弁を制御するためには、室外ユニットから、遮断弁、または遮断弁を駆動する機構に対し制御のための信号（制御信号とも記載する）が伝送される必要がある。このためには、室外ユニットから遮断弁への制御信号の伝送のための配線が必要である。なお、以下では、遮断弁と、遮断弁を駆動する機構とを纏めて遮断弁とも記載する。 In many cases, the shutoff valve is located outside the outdoor unit of the air conditioner, and is housed in a housing provided outdoors with the outdoor unit. Therefore, when the refrigerant sensor detects the leakage of the refrigerant, the outdoor unit receives the signal indicating the leakage of the refrigerant from the indoor unit, and controls the shutoff valve to the closed state according to the signal. In many cases. In order for the outdoor unit to control the shutoff valve, a signal for control (also referred to as a control signal) needs to be transmitted from the outdoor unit to the shutoff valve or a mechanism that drives the shutoff valve. For this purpose, wiring is required for transmitting a control signal from the outdoor unit to the shutoff valve. In the following, the shutoff valve and the mechanism for driving the shutoff valve will be collectively referred to as a shutoff valve.
　ここで、遮断弁には、冷媒回路の液管における冷媒の流れを遮断するもの（液管用遮断弁とも記載する）と、ガス管における冷媒の流れを遮断するもの（ガス管用遮断弁とも記載する）とがある。従って、液管用遮断弁とガス管用遮断弁の各々を制御するためには、液管用遮断弁の制御のための制御信号の伝送用と、ガス管用遮断弁の制御のための制御信号の伝送用の２種類の配線が必要となる。しかし、遮断弁の制御用の配線が２種類あることにより、オペレータによる配線の取り付けの際に、間違いが発生したり、余分に時間が費やされたりする虞がある。 Here, as the shutoff valve, one that shuts off the flow of the refrigerant in the liquid pipe of the refrigerant circuit (also referred to as a shutoff valve for the liquid pipe) and one that shuts off the flow of the refrigerant in the gas pipe (also called the shutoff valve for the gas pipe) ) There is. Therefore, in order to control each of the liquid pipe cutoff valve and the gas pipe cutoff valve, there are a control signal transmission for controlling the liquid pipe cutoff valve and a control signal transmission for controlling the gas pipe cutoff valve. 2 types of wiring are required. However, since there are two types of wiring for controlling the shutoff valve, there is a possibility that an error may occur or extra time may be spent when the operator installs the wiring.
　本発明は、上記課題を解決するためになされたものであり、配線の取り付け作業の簡易化および迅速化を図ることができる空気調和装置を提供することを目的とする。 The present invention has been made to solve the above problems, and an object of the present invention is to provide an air conditioner capable of simplifying and speeding up wiring installation work.
　本発明に係る空気調和装置は、冷媒を内部に流通させて、該冷媒と空気との間で熱交換を行って、空調対象空間への空調を行う空気調和装置であって、液状の前記冷媒を内部に流通させる液管と、ガス状の前記冷媒を内部に流通させるガス管と、前記空気調和装置を制御する制御手段と、前記液管における前記冷媒の流通を遮断するための液管用遮断弁に、前記制御手段からの制御信号を伝送するための液管側制御信号線と、前記ガス管における前記冷媒の流通を遮断するためのガス管用遮断弁に、前記制御手段からの制御信号を伝送するためのガス管側制御信号線と、第１コネクタと、前記第１コネクタと嵌合する第２コネクタと、を備え、前記液管側制御信号線は、一端が前記制御手段に接続され、他端が前記第１コネクタに接続された第１液管側制御信号線と、一端が前記液管用遮断弁との接続用であり、他端が前記第２コネクタに接続された第２液管側制御信号線と、を有し、前記ガス管側制御信号線は、一端が前記制御手段に接続され、他端が前記第１コネクタに接続された第１ガス管側制御信号線と、一端が前記ガス管用遮断弁との接続用であり、他端が前記第２コネクタに接続された第２ガス管側制御信号線と、を有するものである。 An air conditioner according to the present invention is an air conditioner in which a refrigerant is circulated inside, heat is exchanged between the refrigerant and air, and an air-conditioning target space is air-conditioned. A liquid pipe for circulating the inside, a gas pipe for circulating the gaseous refrigerant inside, a control means for controlling the air conditioner, and a liquid pipe cutoff for cutting off the circulation of the refrigerant in the liquid pipe. In the valve, a liquid pipe side control signal line for transmitting the control signal from the control means, and a gas pipe cutoff valve for cutting off the flow of the refrigerant in the gas pipe, the control signal from the control means. A gas pipe side control signal line for transmission, a first connector, and a second connector fitted to the first connector are provided, and one end of the liquid pipe side control signal line is connected to the control means. , A second liquid having the other end connected to the first liquid pipe side control signal line and one end connected to the liquid pipe cutoff valve, and the other end connected to the second connector A pipe side control signal line, the gas pipe side control signal line having a first gas pipe side control signal line having one end connected to the control means and the other end connected to the first connector; One end is for connection with the shutoff valve for the gas pipe, and the other end has a second gas pipe side control signal line connected to the second connector.
　本発明に係る空気調和装置によれば、液管用遮断弁に制御信号を伝送するための配線のうち、室外ユニットに一端が接続された配線における他端と、ガス管用遮断弁に制御信号を伝送するための配線のうち、室外ユニットに一端が接続された配線における他端と、を共通の第１コネクタに接続する。そして、液管用遮断弁に制御信号を伝送するための配線のうち、液管用遮断弁に一端が接続された配線における他端と、ガス管用遮断弁に制御信号を伝送するための配線のうち、ガス管用遮断弁に一端が接続された配線における他端と、を第１コネクタと嵌合する、共通の第２コネクタに接続する。これによって、オペレータによる配線の取り付け作業が、第１コネクタと第２コネクタとの嵌め合わせだけとなり、配線の取り付け作業の簡易化および迅速化を図ることができる。 According to the air conditioner of the present invention, of the wiring for transmitting the control signal to the liquid pipe cutoff valve, the control signal is transmitted to the other end of the wiring, one end of which is connected to the outdoor unit, and the gas pipe cutoff valve. Among the wiring for doing so, the other end of the wiring, one end of which is connected to the outdoor unit, is connected to the common first connector. Then, of the wiring for transmitting the control signal to the liquid pipe cutoff valve, the other end of the wiring whose one end is connected to the liquid pipe cutoff valve and the wiring for transmitting the control signal to the gas pipe cutoff valve, The other end of the wiring, one end of which is connected to the gas pipe cutoff valve, is connected to a common second connector that is fitted to the first connector. As a result, the wiring installation work by the operator is performed only by fitting the first connector and the second connector, and the wiring installation work can be simplified and speeded up.
本発明の実施の形態１に係る空気調和装置を模式的に示した図である。It is the figure which showed typically the air conditioning apparatus which concerns on Embodiment 1 of this invention. 本発明の実施の形態１におけるコネクタと配線とを示す模式図である。It is a schematic diagram which shows the connector and wiring in Embodiment 1 of this invention. 本発明の実施の形態１における制御信号線に対する電磁的干渉と摩耗を抑制するための構成を例示する模式図である。FIG. 3 is a schematic diagram illustrating a configuration for suppressing electromagnetic interference and wear on a control signal line according to the first embodiment of the present invention. 本発明の実施の形態１における制御信号線の被覆について例示する模式図である。FIG. 3 is a schematic diagram illustrating the coating of control signal lines in the first embodiment of the present invention. 本発明の実施の形態１における多重制御信号線の模式的な断面図である。FIG. 3 is a schematic cross-sectional view of a multiplex control signal line according to the first embodiment of the present invention. 本発明の実施の形態２における制御信号線の被覆について例示する模式図である。It is a schematic diagram which illustrates the coating of the control signal line in Embodiment 2 of this invention. 本発明の実施の形態２における多重制御信号線の模式的な断面図である。FIG. 9 is a schematic cross-sectional view of a multiplex control signal line according to the second embodiment of the present invention.
　以下、図面を参照しながら本発明の実施の形態について詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
　実施の形態１.
　図１は、本発明の実施の形態１に係る空気調和装置を模式的に示した図である。本発明の実施の形態１に係る空気調和装置１は、冷媒を流通させる冷媒回路において、室内ユニット２、室外ユニット３、および中継ユニット４を備える。また、空気調和装置１には、上記ユニットの外部にリモートコントローラ５が設けられている。室内ユニット２は、空調の対象の空間（空調対象空間）である室内に設置され、室外ユニット３は、空調対象空間外の場所に設置される。本発明の実施の形態１における中継ユニット４は、室外ユニット３の外であって室外ユニット３の背面側において、室外ユニット３のノックアウト穴３０から、予め定められた距離以内に設けられる。なお、ここでの「室外ユニット３の背面」とは、室外ユニット３の内部で熱交換された空気が室外へと吹き出されるための吹き出し口が設けられた面と対向する面であるとする。ノックアウト穴３０は、室外ユニット３内に冷媒回路を通すために設けられている穴である。また、上記の予め定められた距離は、後述する制御信号線の長さ、室外ユニット３の大きさ、または中継ユニット４の大きさ等に応じて適宜定められている。なお、中継ユニット４の設置箇所は上述したものに限定されず、中継ユニット４は、室内ユニット２における冷媒配管６を通すためのノックアウト穴から予め定められた距離以内に設置されてもよい。 Embodiment 1.
FIG. 1 is a diagram schematically showing an air conditioner according to Embodiment 1 of the present invention. The air conditioning apparatus 1 according to Embodiment 1 of the present invention includes an indoor unit 2, an outdoor unit 3, and a relay unit 4 in a refrigerant circuit for circulating a refrigerant. Further, the air conditioner 1 is provided with a remote controller 5 outside the unit. The indoor unit 2 is installed in a room which is a space to be air-conditioned (air-conditioned space), and the outdoor unit 3 is installed in a place outside the air-conditioned space. The relay unit 4 according to the first embodiment of the present invention is provided outside the outdoor unit 3 and on the back side of the outdoor unit 3 within a predetermined distance from the knockout hole 30 of the outdoor unit 3. Note that the “back surface of the outdoor unit 3 ”here is a surface opposite to a surface provided with a blow-out port for blowing the air that has undergone heat exchange inside the outdoor unit 3 to the outside. .. The knockout hole 30 is a hole provided for passing the refrigerant circuit through the outdoor unit 3. Further, the above-mentioned predetermined distance is appropriately determined according to the length of the control signal line, the size of the outdoor unit 3, the size of the relay unit 4, etc., which will be described later. The installation location of the relay unit 4 is not limited to that described above, and the relay unit 4 may be installed within a predetermined distance from the knockout hole for passing the refrigerant pipe 6 in the indoor unit 2.
　空気調和装置１は、冷媒回路の一部であって、中継ユニット４を介して室内ユニット２と室外ユニット３との間の冷媒を流通させる冷媒配管６を備える。冷媒配管６には、液体状の冷媒を流通させる液管６Ｆと、気体状の冷媒を流通させるガス管６Ｇの２種類がある。冷媒配管６には、冷媒の流通を遮断するための遮断弁７（図３および図４等参照）が設けられている。詳細には、液管６Ｆには、液体状の冷媒の流通を遮断する遮断弁７（液管用遮断弁７Ｆとも記載する）が設けられている（図３および図４等参照）。また、ガス管６Ｇには、気体状の冷媒の流通を遮断する遮断弁７（ガス管用遮断弁７Ｇとも記載する）が設けられている（図３および図４等参照）。これらの遮断弁７は、中継ユニット４の外枠である筐体の内部に収容されている。 The air conditioner 1 includes a refrigerant pipe 6 that is a part of the refrigerant circuit and that allows the refrigerant between the indoor unit 2 and the outdoor unit 3 to flow through the relay unit 4. There are two types of the refrigerant pipes 6, that is, a liquid pipe 6F through which a liquid refrigerant flows and a gas pipe 6G through which a gaseous refrigerant flows. The refrigerant pipe 6 is provided with a shutoff valve 7 (see FIGS. 3 and 4 etc.) for shutting off the flow of the refrigerant. Specifically, the liquid pipe 6F is provided with a shutoff valve 7 (also referred to as a liquid pipe shutoff valve 7F) that shuts off the flow of the liquid refrigerant (see FIGS. 3 and 4 and the like). Further, the gas pipe 6G is provided with a shutoff valve 7 (also referred to as a gas pipe shutoff valve 7G) that shuts off the flow of the gaseous refrigerant (see FIGS. 3 and 4 and the like). These shutoff valves 7 are housed inside a casing that is an outer frame of the relay unit 4.
　室内ユニット２は、冷媒の漏洩を検知する冷媒センサ２０および室内用制御部２１を有する。冷媒センサ２０は、例えば、半導体ガスセンサである。冷媒センサ２０と室内用制御部２１とは信号線によって接続されている。以下では、冷媒センサ２０と室内用制御部２１とを接続する当該信号線をセンサ信号線２２と記載する。冷媒センサ２０は、冷媒の漏洩を検知すると、冷媒の漏洩を示す検知信号を、センサ信号線２２を介して室内用制御部２１に送信する。以下では、冷媒センサ２０による冷媒の漏洩を示す検知信号を漏洩検知信号と記載する。 The indoor unit 2 has a refrigerant sensor 20 for detecting leakage of the refrigerant and an indoor control unit 21. The refrigerant sensor 20 is, for example, a semiconductor gas sensor. The refrigerant sensor 20 and the indoor control unit 21 are connected by a signal line. Below, the said signal line which connects the refrigerant sensor 20 and the indoor control part 21 is described as the sensor signal line 22. When the refrigerant sensor 20 detects the refrigerant leakage, the refrigerant sensor 20 transmits a detection signal indicating the refrigerant leakage to the indoor control unit 21 via the sensor signal line 22. Hereinafter, the detection signal indicating the leakage of the refrigerant by the refrigerant sensor 20 will be referred to as a leakage detection signal.
　室内用制御部２１とリモートコントローラ５とは、信号線によって接続されている。以下では、室内用制御部２１とリモートコントローラ５とを接続する当該信号線をリモートコントローラ信号線８と記載する。ユーザまたはオペレータ等からリモートコントローラ５に指示が入力された場合には、リモートコントローラ５は、当該指示の内容に応じた各種信号を、リモートコントローラ信号線８を介して室内用制御部２１に送信する。各種信号は、例えば、空気調和装置１に運転動作を実行させるための信号、または運転の停止をさせるための信号等である。なお、リモートコントローラ５から室内用制御部２１への信号を、以下ではリモートコントローラ信号とも記載する。室内ユニット２と室外ユニット３は、リモートコントローラ５からの信号に応じ、動作を実行する。 The indoor control unit 21 and the remote controller 5 are connected by a signal line. Hereinafter, the signal line that connects the indoor control unit 21 and the remote controller 5 will be referred to as a remote controller signal line 8. When an instruction is input to the remote controller 5 from a user, an operator, or the like, the remote controller 5 transmits various signals corresponding to the content of the instruction to the indoor control unit 21 via the remote controller signal line 8. .. The various signals are, for example, a signal for causing the air conditioning apparatus 1 to perform a driving operation, a signal for stopping the driving, or the like. The signal from the remote controller 5 to the indoor control unit 21 is also referred to as a remote controller signal below. The indoor unit 2 and the outdoor unit 3 execute operations in response to a signal from the remote controller 5.
　室内用制御部２１は、例えば、ＦＰＧＡ（Ｆｉｅｌｄ　Ｐｒｏｇｒａｍｍａｂｌｅ　Ｇａｔｅ　Ａｒｒａｙ）などの集積回路を搭載した基板、またはメモリを搭載したＭＰＵ（Ｍｉｃｒｏｐｒｏｃｅｓｓｏｒ）等を含む。室内用制御部２１は、冷媒センサ２０から受信した漏洩検知信号、またはリモートコントローラ５から受信したリモートコントローラ信号等に基づいて室内ユニット２を制御する。 The indoor control unit 21 includes, for example, a board on which an integrated circuit such as an FPGA (Field Programmable Gate Array) is mounted, or an MPU (Microprocessor) on which a memory is mounted. The indoor control unit 21 controls the indoor unit 2 based on a leak detection signal received from the refrigerant sensor 20, a remote controller signal received from the remote controller 5, or the like.
　室内用制御部２１は、室外ユニット３に含まれて室外ユニット３を制御する制御部３１と信号線によって接続されている。以下では、室内用制御部２１と制御部３１とを接続する当該信号線をユニット間信号線９と記載する。制御部３１は、例えば、ＦＰＧＡ（Ｆｉｅｌｄ　Ｐｒｏｇｒａｍｍａｂｌｅ　Ｇａｔｅ　Ａｒｒａｙ）などの集積回路を搭載した基板、またはメモリを搭載したＭＰＵ（Ｍｉｃｒｏｐｒｏｃｅｓｓｏｒ）等を含む。制御部３１は、ユニット間信号線９を介して、室内用制御部２１から受信した各種信号に応じて室外ユニット３を制御する。 The indoor control unit 21 is connected to the control unit 31 included in the outdoor unit 3 and controlling the outdoor unit 3 by a signal line. Hereinafter, the signal line connecting the indoor control unit 21 and the control unit 31 will be referred to as an inter-unit signal line 9. The control unit 31 includes, for example, a substrate on which an integrated circuit such as an FPGA (Field Programmable Gate Array) is mounted, or an MPU (Microprocessor) on which a memory is mounted. The control unit 31 controls the outdoor unit 3 according to various signals received from the indoor control unit 21 via the inter-unit signal line 9.
　室内用制御部２１は、冷媒センサ２０から漏洩検知信号を受信した場合には、冷媒の漏洩を示す信号であって当該漏洩を抑制するための信号を、ユニット間信号線９を介して制御部３１へ送信する。以下では、室内用制御部２１から制御部３１へ送信される、当該冷媒の漏洩を示す信号を漏洩抑制信号と記載する。漏洩抑制信号は、漏洩検知信号を受信した室内用制御部２１によって生成されて制御部３１へ送信されてもよいが、冷媒の漏洩に気付いたオペレータ等からのリモートコントローラ５への入力によって、リモートコントローラ５から室内用制御部２１およびユニット間信号線９を介して制御部３１へ送信されてもよい。 When the leak detection signal is received from the refrigerant sensor 20, the indoor control unit 21 sends a signal indicating the refrigerant leak and a signal for suppressing the leak via the inter-unit signal line 9 to the control unit. Send to 31. Below, the signal which shows the leakage of the said refrigerant|coolant transmitted from the indoor control part 21 to the control part 31 is described as a leakage suppression signal. The leakage suppression signal may be generated by the indoor control unit 21 that has received the leakage detection signal and transmitted to the control unit 31. However, by the input to the remote controller 5 from an operator who notices the leakage of the refrigerant, It may be transmitted from the controller 5 to the control unit 31 via the indoor control unit 21 and the inter-unit signal line 9.
　制御部３１は、中継ユニット４の外枠である筐体の内部に収容されている、遮断弁７を開閉させるための機構と信号線によって接続されている。以下では、制御部３１と、遮断弁７を開閉させるための機構とを接続する信号線を、制御信号線と記載する。なお、本発明の実施の形態１においては、当該機構と遮断弁７とは一体となっているとし、これらを含めたものを遮断弁７とする。ただし、これに限定されない。制御信号線には、液管６Ｆに設けられた液管用遮断弁７Ｆに制御信号を伝達させるための液管側制御信号線１１と、ガス管６Ｇに設けられたガス管用遮断弁７Ｇに制御信号を伝達させるためのガス管側制御信号線１２の２種類がある。 The control unit 31 is connected by a signal line to a mechanism for opening and closing the shutoff valve 7, which is housed inside a casing that is an outer frame of the relay unit 4. Below, the signal line which connects the control part 31 and the mechanism for opening and closing the shutoff valve 7 is described as a control signal line. In the first embodiment of the present invention, the mechanism and the shutoff valve 7 are integrated, and the one including them is referred to as the shutoff valve 7. However, it is not limited to this. The control signal line includes a liquid pipe side control signal line 11 for transmitting a control signal to the liquid pipe cutoff valve 7F provided in the liquid pipe 6F, and a control signal for the gas pipe cutoff valve 7G provided in the gas pipe 6G. There are two types of the gas pipe side control signal line 12 for transmitting.
　液管用遮断弁７Ｆに接続された液管側制御信号線１１、およびガス管用遮断弁７Ｇに接続されたガス管側制御信号線１２は、ノックアウト穴３０を介して室外ユニット３内へ通されて制御部３１と接続されている。なお、制御部３１が、室外ユニット３の内部において、室外ユニット３が設置されている面（設置面）から見て高い位置に設置されているような場合には、上記制御信号線は、室外ユニット３の外枠の筐体の内側の側面（設置面に垂直な面）に設けられた１以上のクランプ３２で固定され、制御部３１へ接続されてもよい。なお、クランプ３２の個数は制御信号線の長さによって適宜決められる。 The liquid pipe side control signal line 11 connected to the liquid pipe cutoff valve 7F and the gas pipe side control signal line 12 connected to the gas pipe cutoff valve 7G are passed through the knockout hole 30 into the outdoor unit 3. It is connected to the control unit 31. When the control section 31 is installed inside the outdoor unit 3 at a high position as viewed from the surface (installation surface) on which the outdoor unit 3 is installed, the control signal line is connected to the outdoor unit. The unit 3 may be fixed by one or more clamps 32 provided on the inner side surface (the surface perpendicular to the installation surface) of the housing of the outer frame of the unit 3, and may be connected to the control unit 31. The number of clamps 32 is appropriately determined according to the length of the control signal line.
　制御部３１は、制御信号線を介して遮断弁７に制御信号を送信することによって遮断弁７を制御する。具体的には、制御部３１は、漏洩抑制信号を受信した場合には、室外ユニット３の運転を停止させると共に、液管側制御信号線１１を介して液管用遮断弁７Ｆに制御信号を送信して液管用遮断弁７Ｆを閉状態にし、ガス管側制御信号線１２を介してガス管用遮断弁７Ｇに制御信号を送信してガス管用遮断弁７Ｇを閉状態にする。これにより、液管６Ｆとガス管６Ｇにおける冷媒の流通が遮断され、室内ユニット２への冷媒の流入が阻止される。 The control unit 31 controls the shutoff valve 7 by transmitting a control signal to the shutoff valve 7 via a control signal line. Specifically, when receiving the leakage suppression signal, the control unit 31 stops the operation of the outdoor unit 3 and transmits the control signal to the liquid pipe cutoff valve 7F via the liquid pipe side control signal line 11. Then, the liquid pipe cutoff valve 7F is closed, and a control signal is transmitted to the gas pipe cutoff valve 7G via the gas pipe side control signal line 12 to close the gas pipe cutoff valve 7G. As a result, the circulation of the refrigerant in the liquid pipe 6F and the gas pipe 6G is blocked, and the inflow of the refrigerant into the indoor unit 2 is blocked.
　以上、空気調和装置１に含まれる構成を説明すると共に、冷媒の漏洩が検知された際に、どの構成要素がどの配線を介してどのような信号をどの構成要素に送信し、どのようにして冷媒の漏洩を抑制するかについて説明した。なお、上述した配線は例であって、例えば、遮断弁７と室内用制御部２１とを繋ぐ配線、または制御部３１とリモートコントローラ５とを繋ぐ配線等、他の配線がされていてもよい。また、遮断弁７への制御信号の送信は、室内用制御部２１により行われてもよい。上述したように、遮断弁７を制御するための制御信号線は２種類あり、また更に別の配線が加われば、オペレータには配線の区別がつきにくくなる。このため、配線の取り付け時においてオペレータによるミスが生じてしまう虞がある。本発明の実施の形態１に係る空気調和装置１は、このようなミスを抑制するために以下の構成を更に有する。 The configuration included in the air conditioner 1 has been described above, and when the leakage of the refrigerant is detected, which component transmits what signal through which wiring to which component, and how It has been described whether to suppress the leakage of the refrigerant. Note that the wiring described above is an example, and other wiring such as wiring connecting the shutoff valve 7 and the indoor control unit 21 or wiring connecting the control unit 31 and the remote controller 5 may be provided. .. Further, the control signal for the shutoff valve 7 may be transmitted by the indoor control unit 21. As described above, there are two types of control signal lines for controlling the shutoff valve 7, and if additional wiring is added, it becomes difficult for the operator to distinguish between the wirings. Therefore, an operator may make a mistake when installing the wiring. The air conditioning apparatus 1 according to Embodiment 1 of the present invention further has the following configuration in order to suppress such mistakes.
　図２は、本発明の実施の形態１におけるコネクタと配線とを示す模式図である。本発明の実施の形態１における制御信号線は、制御部３１と遮断弁７との間におけるコネクタ１４を介して接続されるものである。以下、詳細に説明する。 FIG. 2 is a schematic diagram showing a connector and wiring in the first embodiment of the present invention. The control signal line in the first embodiment of the present invention is connected via the connector 14 between the control unit 31 and the shutoff valve 7. The details will be described below.
　コネクタ１４は、第１コネクタ１４Ａ、および当該第１コネクタ１４Ａと嵌合する第２コネクタ１４Ｂを有する。なお、コネクタ１４は、上下左右がオペレータによって認識可能な形状または模様等を有していることが望ましい。 The connector 14 has a first connector 14A and a second connector 14B that fits with the first connector 14A. It is desirable that the connector 14 has a shape, a pattern, etc. that can be recognized by the operator in the upper, lower, left and right directions.
　本発明の実施の形態１における液管側制御信号線１１は、第１コネクタ１４Ａと第２コネクタ１４Ｂとの嵌合によって互いに接続される、第１液管側制御信号線１１Ａと第２液管側制御信号線１１Ｂとによって構成される。同様に、本発明の実施の形態１におけるガス管側制御信号線１２は、第１コネクタ１４Ａと第２コネクタ１４Ｂとの嵌合によって互いに接続される、第１ガス管側制御信号線１２Ａと第２ガス管側制御信号線１２Ｂとによって構成される。 The liquid pipe side control signal line 11 according to the first embodiment of the present invention is connected to each other by fitting the first connector 14A and the second connector 14B, and the first liquid pipe side control signal line 11A and the second liquid pipe are connected. It is constituted by the side control signal line 11B. Similarly, the gas pipe side control signal line 12 in the first embodiment of the present invention is connected to the first gas pipe side control signal line 12A and the first gas pipe side control signal line 12A which are connected to each other by fitting the first connector 14A and the second connector 14B. It is constituted by the two gas pipe side control signal line 12B.
　第１液管側制御信号線１１Ａおよび第１ガス管側制御信号線１２Ａの各一端は、制御部３１に接続されている。またこれらの制御信号線の各他端は、第１コネクタ１４Ａに接続されている。 One end of each of the first liquid pipe side control signal line 11A and the first gas pipe side control signal line 12A is connected to the control unit 31. The other ends of these control signal lines are connected to the first connector 14A.
　第２液管側制御信号線１１Ｂの一端は、液管用遮断弁７Ｆに接続されている。第２ガス管側制御信号線１２Ｂの一端は、ガス管用遮断弁７Ｇに接続されている。またこれらの制御信号線の各他端は、第２コネクタ１４Ｂに接続されている。 One end of the second liquid pipe side control signal line 11B is connected to the liquid pipe cutoff valve 7F. One end of the second gas pipe side control signal line 12B is connected to the gas pipe cutoff valve 7G. The other ends of these control signal lines are connected to the second connector 14B.
　第１コネクタ１４Ａと第２コネクタ１４Ｂとが嵌合することにより、第１液管側制御信号線１１Ａと第２液管側制御信号線１１Ｂとが接続され、第１ガス管側制御信号線１２Ａと第２ガス管側制御信号線１２Ｂとが接続される。これに従って、制御部３１と遮断弁７とが接続される。当該接続によって、制御部３１は、制御信号を遮断弁７に送信できる。 By fitting the first connector 14A and the second connector 14B, the first liquid pipe side control signal line 11A and the second liquid pipe side control signal line 11B are connected, and the first gas pipe side control signal line 12A. And the second gas pipe side control signal line 12B are connected. Accordingly, the control unit 31 and the shutoff valve 7 are connected. With the connection, the control unit 31 can send a control signal to the shutoff valve 7.
　本発明の実施の形態１に係る空気調和装置１は、更に、制御可能な遮断弁７の有無を判定するための配線を備える。以下では、当該配線を判定用配線１３と記載する。なお、上記「制御可能な遮断弁７の有無」には、制御信号線による「制御部３１との接続の有無」も含まれる。遮断弁７と制御部３１とが接続されていれば、遮断弁７が有ると判定され、遮断弁７と制御部３１とが接続されていなければ、遮断弁７が無いと判定される。 The air conditioning apparatus 1 according to Embodiment 1 of the present invention further includes wiring for determining the presence or absence of the controllable shutoff valve 7. Hereinafter, the wiring will be referred to as the determination wiring 13. The "presence/absence of controllable shutoff valve 7" also includes "presence/absence of connection with control unit 31" by the control signal line. If the shutoff valve 7 and the control unit 31 are connected, it is determined that the shutoff valve 7 is present, and if the shutoff valve 7 and the control unit 31 are not connected, it is determined that the shutoff valve 7 is not present.
　判定用配線１３は、第１コネクタ１４Ａと第２コネクタ１４Ｂとの嵌合によって互いに接続される、第１判定用配線１３Ａと第２判定用配線１３Ｂとによって構成される。第１判定用配線１３Ａの一端は、制御部３１に接続されている。第１判定用配線１３Ａの他端は、第１コネクタ１４Ａに接続されている。第２判定用配線１３Ｂは、短絡されて第２コネクタ１４Ｂに接続されている。 The judgment wiring 13 is composed of a first judgment wiring 13A and a second judgment wiring 13B which are connected to each other by fitting the first connector 14A and the second connector 14B. One end of the first determination wiring 13A is connected to the control unit 31. The other end of the first determination wiring 13A is connected to the first connector 14A. The second determination wiring 13B is short-circuited and connected to the second connector 14B.
　第１コネクタ１４Ａと第２コネクタ１４Ｂとが嵌合することにより、第１判定用配線１３Ａと第２判定用配線１３Ｂとが接続される。制御部３１は、判定用配線１３の導通によって検知される電流または電圧等の変化から、第１コネクタ１４Ａと第２コネクタ１４Ｂとの嵌合を検知する。また制御部３１は、第２液管側制御信号線１１Ｂが液管用遮断弁７Ｆと接続されている場合には、第１コネクタ１４Ａと第２コネクタ１４Ｂとの嵌合による液管側制御信号線１１の導通によって検知される電流または電圧等の変化から、制御可能な液管用遮断弁７Ｆが有る、と判定する。また更に制御部３１は、第２ガス管側制御信号線１２Ｂがガス管用遮断弁７Ｇと接続されている場合には、第１コネクタ１４Ａと第２コネクタ１４Ｂとの嵌合によるガス管側制御信号線１２の導通によって検知される電流または電圧等の変化から、制御可能なガス管用遮断弁７Ｇが有る、と判定する。 By fitting the first connector 14A and the second connector 14B, the first determination wiring 13A and the second determination wiring 13B are connected. The control unit 31 detects the fitting of the first connector 14A and the second connector 14B from the change in the current, voltage, or the like detected by the conduction of the determination wiring 13. Further, when the second liquid pipe side control signal line 11B is connected to the liquid pipe shutoff valve 7F, the control unit 31 causes the liquid pipe side control signal line by fitting the first connector 14A and the second connector 14B. It is determined from the change in the current or voltage detected by the conduction of 11 that there is a controllable shutoff valve 7F for the liquid pipe. Further, when the second gas pipe side control signal line 12B is connected to the gas pipe cutoff valve 7G, the control unit 31 further controls the gas pipe side control signal by fitting the first connector 14A and the second connector 14B. It is determined from the change in the current, voltage, or the like detected by the conduction of the line 12 that the controllable shutoff valve for gas pipe 7G is present.
　制御部３１は、制御可能な遮断弁７が有ると判定した場合には、例えば漏洩抑制信号の受信など、必要に応じて当該遮断弁７に制御信号を送信して制御する。一方、制御部３１は、制御可能な遮断弁７が無いと判定した場合には、遮断弁７に対する制御動作、および当該制御動作に伴う動作の実行を行わない。これによって、制御可能な遮断弁７が無い場合における無駄な動作を省くことができる。 When the control unit 31 determines that the controllable shutoff valve 7 is present, the control unit 31 transmits a control signal to the shutoff valve 7 to control the shutoff valve 7 as necessary, such as reception of a leakage suppression signal. On the other hand, when determining that there is no controllable shutoff valve 7, the control unit 31 does not perform the control operation for the shutoff valve 7 and the operation associated with the control operation. As a result, it is possible to omit unnecessary operation when there is no controllable shutoff valve 7.
　制御部３１は、遮断弁７の有無の判定結果を、ユニット間信号線９を介して室内用制御部２１へ送信してもよい。室内用制御部２１は、受信した当該判定結果を、リモートコントローラ信号線８を介してリモートコントローラ５へ送信してもよい。これにより、制御可能な遮断弁７が無いと判定された場合において、ユーザやオペレータは、リモートコントローラ５や室内ユニット２を介して当該判定結果を知ることができ、冷媒の漏洩に対する対策として遮断弁７の設置または制御信号線の接続等の適切な処置を行うことができる。 The control unit 31 may send the determination result of the presence or absence of the shutoff valve 7 to the indoor control unit 21 via the inter-unit signal line 9. The indoor control unit 21 may transmit the received determination result to the remote controller 5 via the remote controller signal line 8. Thus, when it is determined that the controllable shutoff valve 7 does not exist, the user or the operator can know the determination result via the remote controller 5 or the indoor unit 2, and the shutoff valve can be used as a countermeasure against refrigerant leakage. Appropriate treatment such as installation of 7 or connection of control signal lines can be performed.
　また、室内用制御部２１またはリモートコントローラ５が、制御可能な遮断弁７が有るとの情報を有している場合であって、冷媒の漏洩が検知された場合には、室内用制御部２１は、制御部３１に、遮断弁７を閉状態にするための制御を促す情報を含む漏洩抑制信号を送信してもよい。これにより、制御部３１は、遮断弁７の有無の判定結果の参照等を行わずに、漏洩抑制信号に従って制御信号を生成できる。よって、制御部３１による処理の簡略化と迅速化を図ることができる。 Further, when the indoor control unit 21 or the remote controller 5 has the information that the controllable shutoff valve 7 is present, and the leakage of the refrigerant is detected, the indoor control unit 21. May transmit a leakage suppression signal including information urging control for closing the shut-off valve 7 to the control unit 31. Thereby, the control unit 31 can generate the control signal according to the leakage suppression signal without referring to the determination result of the presence or absence of the shutoff valve 7. Therefore, the processing by the control unit 31 can be simplified and speeded up.
　一方、室内用制御部２１またはリモートコントローラ５が、制御可能な遮断弁７が無いとの情報を有している場合であって、冷媒の漏洩が検知された場合には、室内用制御部２１は、制御部３１に、遮断弁７の制御を促す情報を含まない漏洩抑制信号を送信してもよい。これにより、室内用制御部２１による処理が、簡略化および迅速化される。そして、制御部３１は、遮断弁７の有無の判定結果の参照等を行わずに、漏洩抑制信号に従って制御信号を生成できると共に、遮断弁７に対する制御信号の生成等の無駄な処理を省略することができる。 On the other hand, when the indoor control unit 21 or the remote controller 5 has the information that the controllable shutoff valve 7 does not exist, and the leakage of the refrigerant is detected, the indoor control unit 21 May transmit to the control unit 31 a leakage suppression signal that does not include information that prompts control of the shutoff valve 7. This simplifies and speeds up the processing by the indoor control unit 21. Then, the control unit 31 can generate a control signal according to the leakage suppression signal without referring to the determination result of the presence or absence of the shutoff valve 7, and omits useless processing such as generation of a control signal for the shutoff valve 7. be able to.
　上述したように、本発明の実施の形態１においては、第１液管側制御信号線１１Ａ、第１ガス管側制御信号線１２Ａ、および第１判定用配線１３Ａは、１つの第１コネクタ１４Ａに接続されている。同様に、第２液管側制御信号線１１Ｂ、第２ガス管側制御信号線１２Ｂ、および第２判定用配線１３Ｂは、第１コネクタ１４Ａに嵌合する、１つの第２コネクタ１４Ｂに接続されている。これにより、オペレータは、第１コネクタ１４Ａと第２コネクタ１４Ｂとを接続するだけで遮断弁７を制御するための制御信号線を導通させることができる。従って、オペレータによる制御信号線の取り付け作業にかかる時間の短縮を図ることができると共に、オペレータによる制御信号線の取り付けミスを抑制することができる。 As described above, in the first embodiment of the present invention, the first liquid pipe side control signal line 11A, the first gas pipe side control signal line 12A, and the first determination wiring 13A are one first connector 14A. It is connected to the. Similarly, the second liquid pipe side control signal line 11B, the second gas pipe side control signal line 12B, and the second determination wiring 13B are connected to one second connector 14B fitted to the first connector 14A. ing. As a result, the operator can connect the control signal line for controlling the shutoff valve 7 simply by connecting the first connector 14A and the second connector 14B. Therefore, it is possible to reduce the time required for the operator to attach the control signal line, and it is possible to suppress the operator's mistake in attaching the control signal line.
　また、第１コネクタ１４Ａと第２コネクタ１４Ｂとの接続によって、判定用配線１３が接続されて導通すると共に制御信号線が接続されるため、判定用配線１３の導通に伴う電流または電圧等の変化により、オペレータまたは制御部３１等は、制御信号線が接続されたか否かについての判定が可能となる。また、制御信号線が接続されたと判定される場合において、当該制御信号線に流れる電流などによって、オペレータまたは制御部３１等は、制御可能な遮断弁７が有るか否かを確認することができる。 Further, by connecting the first connector 14A and the second connector 14B, the determination wiring 13 is connected and conductive, and the control signal line is connected, so that the change in current, voltage, or the like due to the conduction of the determination wiring 13 As a result, the operator or the control unit 31 or the like can determine whether or not the control signal line is connected. Further, when it is determined that the control signal line is connected, the operator or the control unit 31 or the like can confirm whether or not the controllable shutoff valve 7 is present by the current flowing through the control signal line. ..
　さて、制御信号線の取り付けにミスがあった場合、または制御信号線が未接続である場合等以外にも、遮断弁７を適切に制御できなくなる場合がある。例えば、制御信号線が電磁的な干渉を受けた場合、または制御信号線の摩耗が進んでいて適切に信号を伝送できない場合が挙げられる。詳細に説明すると、制御信号線は、室外ユニット３および中継ユニット４等の筐体の内部に収まるとは限らず、屋外環境にさらされる可能性もあることから、気候によっては摩耗が進み、また他からの電波によって信号にノイズが入る可能性がある。制御信号を適切に遮断弁７に送信するには、他からの電磁的干渉を抑制すると共に、制御信号線の摩耗の進行を抑えることが望ましい。 By the way, the shutoff valve 7 may not be able to be properly controlled except when there is a mistake in mounting the control signal line or when the control signal line is not connected. For example, the control signal line may be subjected to electromagnetic interference, or the control signal line may be worn out so that the signal cannot be properly transmitted. More specifically, the control signal line does not always fit inside the housing such as the outdoor unit 3 and the relay unit 4 and may be exposed to the outdoor environment. There is a possibility that noise will be introduced into the signal due to radio waves from other sources. In order to properly transmit the control signal to the shutoff valve 7, it is desirable to suppress electromagnetic interference from others and to suppress progress of wear of the control signal line.
　図３は、本発明の実施の形態１における制御信号線に対する電磁的干渉と摩耗を抑制するための構成を例示する模式図である。図３に示すように、本発明の実施の形態１における液管側制御信号線１１およびガス管側制御信号線１２は、筐体の外部への露出範囲に亘って、被覆部材１５（図５参照）によって纏めて被覆され、１本の多重制御信号線１６とされている。 FIG. 3 is a schematic diagram illustrating a configuration for suppressing electromagnetic interference and wear on the control signal line according to the first embodiment of the present invention. As shown in FIG. 3, the liquid pipe side control signal line 11 and the gas pipe side control signal line 12 in the first embodiment of the present invention cover the covering member 15 (see FIG. 5) over the exposed range of the housing. (Refer to FIG. 3), they are collectively covered to form one multiplexed control signal line 16.
　図４は、本発明の実施の形態１における制御信号線の被覆について例示する模式図である。図４に示すように、液管側制御信号線１１には、接地用のものと非接地用のものが含まれる。接地用の液管側制御信号線１１を、以下では、接地用液管側配線１１Ｃと記載する。また非接地用の液管側制御信号線１１を、以下では、非接地用液管側配線１１Ｄと記載する。非接地用液管側配線１１Ｄを介して制御部３１から液管用遮断弁７Ｆに制御信号が送信される。接地用液管側配線１１Ｃは、非接地用液管側配線１１Ｄに伝送される制御信号のノイズの除去のためのものである。 FIG. 4 is a schematic diagram exemplifying covering of the control signal line in the first embodiment of the present invention. As shown in FIG. 4, the liquid pipe side control signal line 11 includes one for grounding and one for non-grounding. The liquid pipe side control signal line 11 for grounding will be described below as a liquid pipe side wiring 11C for grounding. Further, the liquid pipe side control signal line 11 for non-grounding will be described below as a liquid pipe side wiring 11D for non-grounding. A control signal is transmitted from the control unit 31 to the liquid pipe cutoff valve 7F via the non-grounded liquid pipe side wiring 11D. The grounding liquid pipe side wiring 11C is for removing noise of the control signal transmitted to the non-grounding liquid pipe side wiring 11D.
　同様に、ガス管側制御信号線１２には、接地用のものと非接地側のものが含まれる。接地用のガス管側制御信号線１２を、以下では、接地用ガス管側配線１２Ｃと記載する。また非接地用のガス管側制御信号線１２を、以下では、非接地用ガス管側配線１２Ｄと記載する。非接地用ガス管側配線１２Ｄを介して制御部３１からガス管用遮断弁７Ｇに制御信号が送信される。接地用ガス管側配線１２Ｃは、非接地用ガス管側配線１２Ｄに伝送される制御信号のノイズの除去のためのものである。 Similarly, the gas pipe side control signal line 12 includes one for grounding and one for non-grounding. Below, the gas pipe side control signal line 12 for grounding is described as the gas pipe side wiring 12C for grounding. Further, the gas pipe side control signal line 12 for non-grounding will be referred to as a non-grounding gas pipe side wiring 12D below. A control signal is transmitted from the control unit 31 to the gas pipe cutoff valve 7G through the non-grounded gas pipe side wiring 12D. The grounding gas pipe side wiring 12C is for removing noise of the control signal transmitted to the non-grounding gas pipe side wiring 12D.
　図４に示すように、接地用液管側配線１１Ｃ、非接地用液管側配線１１Ｄ、接地用ガス管側配線１２Ｃ、および非接地用ガス管側配線１２Ｄは、筐体の外部への露出範囲に亘り、被覆部材１５（図５参照）により纏めて被覆されて、１本の多重制御信号線１６とされている。 As shown in FIG. 4, the grounding liquid pipe side wiring 11C, the non-grounding liquid pipe side wiring 11D, the grounding gas pipe side wiring 12C, and the non-grounding gas pipe side wiring 12D are exposed to the outside of the housing. The covering member 15 (see FIG. 5) is collectively covered over the range to form a single multiple control signal line 16.
　図５は、本発明の実施の形態１における多重制御信号線の模式的な断面図である。多重制御信号線１６は、接地用液管側配線１１Ｃ、非接地用液管側配線１１Ｄ、接地用ガス管側配線１２Ｃ、および非接地用ガス管側配線１２Ｄが、被覆部材１５によって纏めて被覆されたものである。また、多重制御信号線１６に含まれる接地用液管側配線１１Ｃ、非接地用液管側配線１１Ｄ、接地用ガス管側配線１２Ｃ、および非接地用ガス管側配線１２Ｄは、電磁的干渉と摩耗の防止のために、被覆部材１５によって外部に露出しないように被覆されている。 FIG. 5 is a schematic cross-sectional view of the multiplex control signal line according to the first embodiment of the present invention. In the multiplex control signal line 16, the grounding liquid pipe side wiring 11C, the non-grounding liquid pipe side wiring 11D, the grounding gas pipe side wiring 12C, and the non-grounding gas pipe side wiring 12D are collectively covered by the covering member 15. It was done. Further, the grounding liquid pipe side wiring 11C, the non-grounding liquid pipe side wiring 11D, the grounding gas pipe side wiring 12C, and the non-grounding gas pipe side wiring 12D included in the multiplex control signal line 16 cause electromagnetic interference. In order to prevent abrasion, it is covered by the covering member 15 so as not to be exposed to the outside.
　被覆部材１５は、耐候性、難燃性、および電磁的不干渉性等に優れた素材であって、周辺環境の温度、湿度、および電波状態等によって適宜選択される。これにより、制御信号線が、室外ユニット３および中継ユニット４等の筐体の外部へと露出しても、摩耗と電磁干渉の抑制を図ることができる。また、液管側制御信号線１１とガス管側制御信号線１２とを１本の線に纏めることで、オペレータは、ノックアウト穴３０に、液管側制御信号線１１とガス管側制御信号線１２とを纏めて、容易に手早く挿入することが可能となる（図３参照）。 The covering member 15 is a material having excellent weather resistance, flame retardancy, electromagnetic interference, and the like, and is appropriately selected depending on the temperature, humidity, radio wave condition of the surrounding environment, and the like. Thereby, even if the control signal line is exposed to the outside of the housing such as the outdoor unit 3 and the relay unit 4, it is possible to suppress wear and electromagnetic interference. Further, the liquid pipe side control signal line 11 and the gas pipe side control signal line 12 are combined into one line, so that the operator can insert the liquid pipe side control signal line 11 and the gas pipe side control signal line into the knockout hole 30. 12 and 12 can be put together easily and quickly (see FIG. 3).
　本発明の実施の形態１に係る空気調和装置１によれば、各一端が制御部３１に接続された第１液管側制御信号線１１Ａおよび第１ガス管側制御信号線１２Ａの各他端が、１つの第１コネクタ１４Ａに接続されている。そして、一端が液管用遮断弁７Ｆに接続された第２液管側制御信号線１１Ｂの他端と、一端がガス管用遮断弁７Ｇに接続された第２ガス管側制御信号線１２Ｂの他端とが、第１コネクタ１４Ａに嵌合する１つの第２コネクタ１４Ｂに接続されている。これにより、第１コネクタ１４Ａと第２コネクタ１４Ｂとの接続処理だけで、オペレータは、簡易且つ迅速に、制御部３１からの制御信号を遮断弁７に伝送するための制御信号線を導通させることができ、制御部３１から遮断弁７に適切に制御信号が伝達されるようになる。 According to the air conditioning apparatus 1 of Embodiment 1 of the present invention, the other ends of the first liquid pipe side control signal line 11A and the first gas pipe side control signal line 12A, each one end of which is connected to the control unit 31. Are connected to one first connector 14A. And the other end of the second liquid pipe side control signal line 11B whose one end is connected to the liquid pipe cutoff valve 7F and the other end of the second gas pipe side control signal line 12B whose one end is connected to the gas pipe cutoff valve 7G. And are connected to one second connector 14B fitted to the first connector 14A. As a result, the operator can simply and quickly turn on the control signal line for transmitting the control signal from the control unit 31 to the shutoff valve 7 only by the process of connecting the first connector 14A and the second connector 14B. Therefore, the control signal is appropriately transmitted from the control unit 31 to the shutoff valve 7.
　本発明の実施の形態１に係る空気調和装置１によれば、制御可能な遮断弁７の有無を判定するための判定用配線１３が更に設けられ、当該判定用配線１３の一部である第１判定用配線１３Ａは、第１液管側制御信号線１１Ａおよび第１ガス管側制御信号線１２Ａと同様、一端が制御部３１に接続され、他端が第１コネクタ１４Ａに接続されている。そして、判定用配線１３の残りの一部である第２判定用配線１３Ｂは、第２液管側制御信号線１１Ｂと第２ガス管側制御信号線１２Ｂの各一端が接続された、第１コネクタ１４Ａに嵌合する第２コネクタ１４Ｂに短絡されて接続されている。このような構成とすることにより、判定用配線１３は、第１コネクタ１４Ａと第２コネクタ１４Ｂとの接続によって導通する。そして、当該導通によって、オペレータまたは制御部３１等は、制御信号線が接続されたことがわかり、接続された場合における制御信号線に流れる電流等によって遮断弁７の有無を判定することができる。 According to the air conditioning apparatus 1 of Embodiment 1 of the present invention, the determination wiring 13 for determining the presence or absence of the controllable shutoff valve 7 is further provided, and is a part of the determination wiring 13. Similarly to the first liquid pipe side control signal line 11A and the first gas pipe side control signal line 12A, the first determination wiring 13A has one end connected to the control unit 31 and the other end connected to the first connector 14A. .. The second determination wiring 13B, which is the remaining part of the determination wiring 13, is connected to one end of each of the second liquid pipe side control signal line 11B and the second gas pipe side control signal line 12B. It is short-circuited and connected to the second connector 14B fitted to the connector 14A. With such a configuration, the determination wiring 13 is electrically connected by the connection between the first connector 14A and the second connector 14B. Then, by the conduction, the operator or the control unit 31 or the like can know that the control signal line is connected, and can determine the presence or absence of the shutoff valve 7 by the current flowing in the control signal line when the control signal line is connected.
　本発明の実施の形態１に係る空気調和装置１によれば、判定用配線１３を用いて遮断弁７の有無の判定を行った制御部３１は、その判定結果を室内ユニット２の室内用制御部２１とリモートコントローラ５の少なくとも一方に送信してもよい。なお、制御部３１から室内用制御部２１への判定結果の伝送は、ユニット間信号線９によって行われる。一方、制御部３１からリモートコントローラ５への判定結果の伝送は、室内用制御部２１によって中継されて、ユニット間信号線９とリモートコントローラ信号線８とにより行われてもよいが、制御部３１とリモートコントローラ５とが有線または無線にて接続されている場合には、制御部３１から直接、リモートコントローラ５へ判定結果が送信されてもよい。このように、遮断弁７の有無についての判定結果を室内用制御部２１またはリモートコントローラ５が取得することによって、オペレータまたはユーザに当該判定結果を通知して適切な処置を促すことができる。また、室内用制御部２１またはリモートコントローラ５において、制御部３１に送信する、漏洩抑制信号などの制御部３１への指示を示す信号を、遮断弁７の有無に応じたものとすることができ、制御部３１における処理を低減することができる。 According to the air conditioner 1 of Embodiment 1 of the present invention, the control unit 31 that determines the presence or absence of the shutoff valve 7 by using the determination wiring 13 uses the determination result as the indoor control of the indoor unit 2. It may be transmitted to at least one of the unit 21 and the remote controller 5. The transmission of the determination result from the control unit 31 to the indoor control unit 21 is performed by the inter-unit signal line 9. On the other hand, the transmission of the determination result from the control unit 31 to the remote controller 5 may be relayed by the indoor control unit 21 and performed by the inter-unit signal line 9 and the remote controller signal line 8, but the control unit 31. If the remote controller 5 and the remote controller 5 are connected by wire or wirelessly, the determination result may be directly transmitted from the control unit 31 to the remote controller 5. In this way, the indoor control unit 21 or the remote controller 5 obtains the determination result regarding the presence or absence of the shutoff valve 7, whereby the operator or the user can be notified of the determination result and appropriate treatment can be prompted. Further, in the indoor control unit 21 or the remote controller 5, the signal indicating the instruction to the control unit 31, such as the leakage suppression signal, which is transmitted to the control unit 31, can be set according to the presence or absence of the shutoff valve 7. The processing in the control unit 31 can be reduced.
　本発明の実施の形態１に係る空気調和装置１によれば、冷媒センサ２０が冷媒の漏洩を検知した場合には、漏洩検知信号を冷媒センサ２０から受信した室内用制御部２１が、ユニット間信号線９を介して漏洩抑制信号を制御部３１に送信する。制御部３１は、当該漏洩抑制信号に応じて、室外ユニット３の空調動作を停止させ、また遮断弁７が有る場合には遮断弁７を閉状態へと制御する。これにより、冷媒配管６における冷媒の流通を遮断することができ、室内ユニット２への冷媒の流入を阻止することができ、更なる冷媒の漏洩を抑制することができる。 According to the air conditioner 1 of Embodiment 1 of the present invention, when the refrigerant sensor 20 detects the leakage of the refrigerant, the indoor control unit 21 that has received the leakage detection signal from the refrigerant sensor 20 detects the inter-unit The leakage suppression signal is transmitted to the control unit 31 via the signal line 9. The control unit 31 stops the air conditioning operation of the outdoor unit 3 according to the leakage suppression signal, and controls the shutoff valve 7 to be in the closed state when the shutoff valve 7 is present. Thereby, the circulation of the refrigerant in the refrigerant pipe 6 can be blocked, the inflow of the refrigerant into the indoor unit 2 can be prevented, and further leakage of the refrigerant can be suppressed.
　本発明の実施の形態１に係る空気調和装置１によれば、中継ユニット４の外枠の、遮断弁７を収容するための筐体を、室外ユニット３のノックアウト穴３０、または室内ユニット２のノックアウト穴から予め定められた距離以内に設置する。これにより、制御信号線を必要以上に長くすることなく制御部３１または室内用制御部２１に接続することができる。また、オペレータによる室内ユニット２または室外ユニット３に対する新たな穴空け等の処理を減らすことができると共に、新たな穴によって生じうる室内ユニット２または室外ユニット３の筐体の強度の低下を防止することができる。 According to the air conditioner 1 of Embodiment 1 of the present invention, the casing for accommodating the shutoff valve 7 in the outer frame of the relay unit 4 is provided in the knockout hole 30 of the outdoor unit 3 or the indoor unit 2. Install within a predetermined distance from the knockout hole. Thereby, the control signal line can be connected to the control unit 31 or the indoor control unit 21 without making the control signal line longer than necessary. In addition, it is possible to reduce processing such as making a new hole in the indoor unit 2 or the outdoor unit 3 by the operator, and prevent a decrease in the strength of the housing of the indoor unit 2 or the outdoor unit 3 that may occur due to the new hole. You can
　本発明の実施の形態１に係る空気調和装置１によれば、室外ユニット３および中継ユニット４等の筐体から外部へと露出する、接地用液管側配線１１Ｃ、非接地用液管側配線１１Ｄ、接地用ガス管側配線１２Ｃ、および非接地用ガス管側配線１２Ｄは、被覆部材１５によって纏めて被覆されて１本の多重制御信号線１６とされる。またこれらの制御信号線は、被覆部材１５によって外部に露出しないように被覆される。これにより、制御信号線の摩耗と電磁干渉との抑制を図ることができると共に、オペレータによる扱いが容易になる。 According to the air conditioner 1 of Embodiment 1 of the present invention, the grounding liquid pipe side wiring 11C and the non-grounding liquid pipe side wiring that are exposed to the outside from the housing of the outdoor unit 3, the relay unit 4, and the like. 11D, the gas pipe side wiring 12C for grounding, and the gas pipe side wiring 12D for non-grounding are collectively covered by the covering member 15 to form one multiple control signal line 16. Further, these control signal lines are covered by the covering member 15 so as not to be exposed to the outside. As a result, it is possible to suppress wear of the control signal line and electromagnetic interference, and it becomes easy for the operator to handle.
　実施の形態２.
　上記実施の形態１における多重制御信号線１６は、４つの制御信号線を被覆部材１５によって纏めて被覆して１本にしたものであった。しかし、多重制御信号線１６は４本もの制御信号線を含むため、外径を小さくすることには限界があった。当該問題を解決するため、実施の形態２では、非接地用液管側配線１１Ｄと非接地用ガス管側配線１２Ｄとを結線し、当該結線した制御信号線と接地用液管側配線１１Ｃと接地用ガス管側配線１２Ｃとを被覆部材１５で纏めて被覆して、１本の多重制御信号線１７にしている。なお、以下では、上述した実施の形態１と相違する部分について記載し、同様な部分についての記載は省略する。 Embodiment 2.
The multiple control signal line 16 in the first embodiment is one in which four control signal lines are collectively covered by the covering member 15. However, since the multiplex control signal line 16 includes as many as four control signal lines, there is a limit in reducing the outer diameter. In order to solve the problem, in the second embodiment, the non-grounding liquid pipe side wiring 11D and the non-grounding gas pipe side wiring 12D are connected, and the connected control signal line and the grounding liquid pipe side wiring 11C are connected. The grounding gas pipe side wiring 12C is collectively covered with the covering member 15 to form one multiplex control signal line 17. It should be noted that, in the following, portions different from the above-described first embodiment will be described, and description of similar portions will be omitted.
　図６は、本発明の実施の形態２における制御信号線の被覆について例示する模式図である。図６に示すように、中継ユニット４の内部において、非接地用液管側配線１１Ｄおよび非接地用ガス管側配線１２Ｄは、結線されて１本とされている。当該結線された非接地用液管側配線１１Ｄと非接地用ガス管側配線１２Ｄとを、共通非接地用配線１８とも記載する。結線は、圧着端子接続または二股端子接続等によって行われる。これによって、中継ユニット４の外側に露出する制御信号線は３本となる。実施の形態２においては、当該３本の制御信号線を、被覆部材１５によって纏めて被覆して１本の多重制御信号線１７としている。 FIG. 6 is a schematic diagram exemplifying covering of control signal lines in the second embodiment of the present invention. As shown in FIG. 6, inside the relay unit 4, the non-grounding liquid pipe side wiring 11D and the non-grounding gas pipe side wiring 12D are connected to form one line. The connected non-grounding liquid pipe side wiring 11D and non-grounding gas pipe side wiring 12D are also referred to as a common non-grounding wiring 18. The connection is performed by crimp terminal connection, bifurcated terminal connection, or the like. As a result, there are three control signal lines exposed to the outside of the relay unit 4. In the second embodiment, the three control signal lines are collectively covered by the covering member 15 to form one multiplexed control signal line 17.
　図７は、本発明の実施の形態２における多重制御信号線１７の模式的な断面図である。多重制御信号線１７は、接地用液管側配線１１Ｃ、接地用ガス管側配線１２Ｃ、および共通非接地用配線１８が、被覆部材１５によって纏めて被覆されたものであることがわかる。被覆部材１５は、上記実施の形態１における場合と同様、接地用液管側配線１１Ｃ、接地用ガス管側配線１２Ｃ、および共通非接地用配線１８が外部に露出しないように被覆している。 FIG. 7 is a schematic cross-sectional view of the multiplex control signal line 17 according to the second embodiment of the present invention. It can be seen that the multiplex control signal line 17 is formed by covering the grounding liquid pipe side wiring 11C, the grounding gas pipe side wiring 12C, and the common non-grounding wiring 18 together by the covering member 15. Similar to the case of the first embodiment, the covering member 15 covers the grounding liquid pipe side wiring 11C, the grounding gas pipe side wiring 12C, and the common non-grounding wiring 18 so as not to be exposed to the outside.
　本発明の実施の形態２に係る空気調和装置１によれば、中継ユニット４内において、４本の制御信号線のうちの被接地用の２本が結線されて１本の共通非接地用配線１８にされている。そして、制御信号線が室外ユニット３および中継ユニット４等の筐体の外部に露出する範囲に亘って、接地側の２本の制御信号線と共通非接地用配線１８との３本の制御信号線を、被覆部材１５によって纏めて被覆することによって１本の多重制御信号線１７にする。これにより、多重制御信号線１７の外径は小さくなり、ノックアウト穴３０への多重制御信号線１７の挿入操作等が容易になり、操作性の向上を図ることができる。また被覆部材１５による被覆範囲が小さくなり材料コストを低減することができる。 According to the air conditioner 1 of Embodiment 2 of the present invention, in the relay unit 4, two of the four control signal lines to be grounded are connected to form one common non-grounding wiring. It is set at 18. Then, over the range in which the control signal lines are exposed to the outside of the housing such as the outdoor unit 3 and the relay unit 4, the three control signals of the two ground-side control signal lines and the common non-grounding wiring 18 are provided. The wires are collectively covered by the covering member 15 to form one multiplexed control signal line 17. As a result, the outer diameter of the multiplex control signal line 17 is reduced, the operation of inserting the multiplex control signal line 17 into the knockout hole 30 is facilitated, and the operability can be improved. Further, the coverage of the covering member 15 is reduced, and the material cost can be reduced.
　１　空気調和装置、２　室内ユニット、３　室外ユニット、４　中継ユニット、５　リモートコントローラ、６　冷媒配管、６Ｆ　液管、６Ｇ　ガス管、７　遮断弁、７Ｆ　液管用遮断弁、７Ｇ　ガス管用遮断弁、８　リモートコントローラ信号線、９　ユニット間信号線、１１　液管側制御信号線、１１Ａ　第１液管側制御信号線、１１Ｂ　第２液管側制御信号線、１１Ｃ　接地用液管側配線、１１Ｄ　非接地用液管側配線、１２　ガス管側制御信号線、１２Ａ　第１ガス管側制御信号線、１２Ｂ　第２ガス管側制御信号線、１２Ｃ　接地用ガス管側配線、１２Ｄ　非接地用ガス管側配線、１３　判定用配線、１３Ａ　第１判定用配線、１３Ｂ　第２判定用配線、１４　コネクタ、１４Ａ　第１コネクタ、１４Ｂ　第２コネクタ、１５　被覆部材、１６、１７　多重制御信号線、１８　共通非接地用配線。 1 air conditioner, 2 indoor unit, 3 outdoor unit, 4 relay unit, 5 remote controller, 6 refrigerant pipe, 6F liquid pipe, 6G gas pipe, 7 cutoff valve, 7F liquid pipe cutoff valve, 7G gas pipe cutoff valve, 8 Remote controller signal line, 9 unit unit signal line, 11 liquid pipe side control signal line, 11A first liquid pipe side control signal line, 11B second liquid pipe side control signal line, 11C grounding liquid pipe side wiring, 11D ungrounded Liquid pipe side wiring, 12 gas pipe side control signal line, 12A first gas pipe side control signal line, 12B second gas pipe side control signal line, 12C grounding gas pipe side wiring, 12D non-grounding gas pipe side wiring , 13, determination wiring, 13A first determination wiring, 13B second determination wiring, 14 connector, 14A first connector, 14B second connector, 15 covering member, 16, 17 multiple control signal line, 18 common non-grounding wiring.

Claims (7)

  1. 　冷媒を内部に流通させて、該冷媒と空気との間で熱交換を行って、空調対象空間への空調を行う空気調和装置であって、
    　液状の前記冷媒を内部に流通させる液管と、
    　ガス状の前記冷媒を内部に流通させるガス管と、
    　前記空気調和装置を制御する制御手段と、
    　前記液管における前記冷媒の流通を遮断するための液管用遮断弁に、前記制御手段からの制御信号を伝送するための液管側制御信号線と、
    　前記ガス管における前記冷媒の流通を遮断するためのガス管用遮断弁に、前記制御手段からの制御信号を伝送するためのガス管側制御信号線と、
    　第１コネクタと、
    　前記第１コネクタと嵌合する第２コネクタと、
    　を備え、
    　前記液管側制御信号線は、
    　一端が前記制御手段に接続され、他端が前記第１コネクタに接続された第１液管側制御信号線と、
    　一端が前記液管用遮断弁との接続用であり、他端が前記第２コネクタに接続された第２液管側制御信号線と、
    　を有し、
    　前記ガス管側制御信号線は、
    　一端が前記制御手段に接続され、他端が前記第１コネクタに接続された第１ガス管側制御信号線と、
    　一端が前記ガス管用遮断弁との接続用であり、他端が前記第２コネクタに接続された第２ガス管側制御信号線と、
    　を有する、空気調和装置。     An air conditioner in which a refrigerant is circulated inside, heat is exchanged between the refrigerant and air, and the air conditioning target space is air-conditioned.
    A liquid pipe for circulating the liquid refrigerant inside,
    A gas pipe for circulating the gaseous refrigerant inside,
    Control means for controlling the air conditioner,
    A liquid pipe cutoff valve for cutting off the flow of the refrigerant in the liquid pipe, a liquid pipe side control signal line for transmitting a control signal from the control means,
    A gas pipe cutoff valve for shutting off the flow of the refrigerant in the gas pipe, a gas pipe side control signal line for transmitting a control signal from the control means,
    A first connector,
    A second connector fitted to the first connector;
    Equipped with
    The liquid pipe side control signal line,
    A first liquid pipe side control signal line having one end connected to the control means and the other end connected to the first connector;
    A second liquid pipe side control signal line having one end for connection with the liquid pipe cutoff valve and the other end connected to the second connector;
    Have
    The gas pipe side control signal line,
    A first gas pipe side control signal line having one end connected to the control means and the other end connected to the first connector;
    A second gas pipe side control signal line having one end for connection with the gas pipe cutoff valve and the other end connected to the second connector;
    Having an air conditioner.
  2. 　前記制御手段によって制御可能な前記液管用遮断弁および前記ガス管用遮断弁の少なくとも一方が存在するか否かを判定するための判定用配線を更に備え、
    　前記判定用配線は、
    　一端が前記制御手段に接続され、他端が前記第１コネクタに接続された第１判定用配線と、
    　短絡されて前記第２コネクタに接続された第２判定用配線と、
    　を有する、請求項１に記載の空気調和装置。     Further comprising a determination wiring for determining whether or not at least one of the liquid pipe cutoff valve and the gas pipe cutoff valve controllable by the control means is present,
    The judgment wiring is
    A first determination wiring having one end connected to the control means and the other end connected to the first connector;
    A second determination wiring short-circuited and connected to the second connector;
    The air conditioner according to claim 1, further comprising:
  3. 　前記制御手段は、前記判定用配線を用いての判定結果を、前記空気調和装置に含まれて前記空調対象空間の空気と前記冷媒との間で熱交換を行うことによって前記空調を行う室内ユニットと、前記空気調和装置を制御するリモートコントローラのうちの少なくとも一方に送信する、請求項２に記載の空気調和装置。 The control unit is an indoor unit that performs the air conditioning by performing a heat exchange between the refrigerant in the air conditioning target space included in the air conditioner and the determination result using the determination wiring. And the remote controller which controls the said air conditioning apparatus, It transmits to at least one, The air conditioning apparatus of Claim 2.
  4. 　前記空気調和装置は、
    　前記空調対象空間における前記冷媒の漏洩を検知する冷媒センサを更に備え、
    　前記制御手段は、
    　前記冷媒センサが前記冷媒の漏洩を検知した場合には、前記空気調和装置による前記空調を停止させると共に、前記判定用配線を用いての判定が、制御可能な前記液管用遮断弁および前記ガス管用遮断弁のうちの少なくとも一方が存在するという判定の場合には、前記液管用遮断弁およびガス管用遮断弁の少なくとも一方を閉状態にするための制御信号を、前記液管用遮断弁およびガス管用遮断弁の少なくとも一方へ送信する、請求項２または請求項３に記載の空気調和装置。     The air conditioner,
    Further comprising a refrigerant sensor for detecting leakage of the refrigerant in the air-conditioned space,
    The control means is
    When the refrigerant sensor detects the leakage of the refrigerant, the air conditioning by the air conditioner is stopped, and the determination using the determination wiring is controllable for the liquid pipe cutoff valve and the gas pipe. If it is determined that at least one of the shutoff valves is present, a control signal for closing at least one of the liquid pipe shutoff valve and the gas pipe shutoff valve is set to the liquid pipe shutoff valve and the gas pipe shutoff valve. The air conditioner according to claim 2 or 3, which transmits to at least one of the valves.
  5. 　前記空気調和装置は、
    　前記液管用遮断弁と前記ガス管用遮断弁とを収容するための筐体と、
    　前記空調対象空間の外の空気と前記冷媒との間で熱交換を行うことで前記空調を行う室外ユニットと、
    　前記空調対象空間の空気と前記冷媒との間で熱交換を行うことで前記空調を行う室内ユニットと、
    　を更に備え、
    　前記室外ユニットまたは前記室内ユニットは、
    　前記液管および前記ガス管を通すためのノックアウト穴を有し、
    　前記筐体は、
    　前記ノックアウト穴から予め定められた距離以内で設置され、
    　前記液管側制御信号線および前記ガス管側制御信号線は、
    　前記室外ユニットまたは前記室内ユニットへと前記ノックアウト穴から挿入されて、前記制御手段と接続される、請求項１～請求項４のいずれか一項に記載の空気調和装置。     The air conditioner,
    A housing for accommodating the liquid pipe cutoff valve and the gas pipe cutoff valve;
    An outdoor unit that performs the air conditioning by exchanging heat between the air outside the air-conditioned space and the refrigerant,
    An indoor unit that performs the air conditioning by performing heat exchange between the air in the air conditioning target space and the refrigerant,
    Further equipped with,
    The outdoor unit or the indoor unit,
    A knockout hole for passing the liquid pipe and the gas pipe,
    The housing is
    Installed within a predetermined distance from the knockout hole,
    The liquid pipe side control signal line and the gas pipe side control signal line,
    The air conditioner according to any one of claims 1 to 4, which is inserted into the outdoor unit or the indoor unit through the knockout hole and is connected to the control means.
  6. 　筐体の外部へと露出する、前記液管側制御信号線と前記ガス管側制御信号線とを、被覆部材によって共に被覆して一本化した、請求項１～請求項５のいずれか一項に記載の空気調和装置。 6. The liquid pipe side control signal line and the gas pipe side control signal line exposed to the outside of the housing are integrally covered by a covering member so as to be integrated. An air conditioner according to item.
  7. 　前記液管側制御信号線に含まれる接地用ではない配線、および、前記ガス管側制御信号線に含まれる接地用ではない配線が結線された共通非接地用配線と、前記液管側制御信号線に含まれる接地用の配線と、前記ガス管側制御信号線に含まれる接地用の配線とを、被覆部材によって共に被覆して一本化した、請求項１～請求項５のいずれか一項に記載の空気調和装置。 Non-grounding wiring included in the liquid pipe side control signal line, and common non-grounding wiring in which non-grounding wiring included in the gas pipe side control signal line is connected, and the liquid pipe side control signal 6. The wiring for grounding included in the line and the wiring for grounding included in the gas pipe side control signal line are integrally covered by a covering member so as to be integrated. An air conditioner according to item.
PCT/JP2019/007652 2019-02-27 2019-02-27 Air conditioning device WO2020174622A1 (en)

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