WO2017195365A1 - Climatiseur - Google Patents

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Publication number
WO2017195365A1
WO2017195365A1 PCT/JP2016/064362 JP2016064362W WO2017195365A1 WO 2017195365 A1 WO2017195365 A1 WO 2017195365A1 JP 2016064362 W JP2016064362 W JP 2016064362W WO 2017195365 A1 WO2017195365 A1 WO 2017195365A1
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WO
WIPO (PCT)
Prior art keywords
refrigerant
air conditioner
floor
control board
sensor
Prior art date
Application number
PCT/JP2016/064362
Other languages
English (en)
Japanese (ja)
Inventor
健太 野村
鈴木　洋平
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 EP16901713.4A priority Critical patent/EP3457043B1/fr
Priority to CN201680085455.5A priority patent/CN109073263A/zh
Priority to PCT/JP2016/064362 priority patent/WO2017195365A1/fr
Priority to JP2018516324A priority patent/JP6587743B2/ja
Publication of WO2017195365A1 publication Critical patent/WO2017195365A1/fr

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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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/52—Indication arrangements, e.g. displays
    • 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
    • F24F11/88—Electrical aspects, e.g. circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/005—Arrangement or mounting of control or safety devices of safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/005—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted on the floor; standing on the floor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/12—Inflammable refrigerants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/22—Preventing, detecting or repairing leaks of refrigeration fluids
    • F25B2500/222—Detecting refrigerant leaks

Definitions

  • the present invention relates to an air conditioner including a floor-mounted indoor unit and a refrigerant sensor that detects refrigerant leaked on the floor-mounted indoor unit side.
  • Fluorocarbon refrigerants have stable physical properties and are easy to handle, but have a high global warming potential and adversely affect the global environment. Therefore, hydrocarbon refrigerants such as propane or propylene, which are natural refrigerants with low global warming potential, are chlorofluorocarbons. It is attracting attention as an alternative to refrigerants. However, since the hydrocarbon-based refrigerant has combustibility, when applied to an air conditioner, the refrigerant leaked from the air conditioner may reach a combustible concentration. Therefore, in an air conditioner, it is desirable to detect refrigerant leakage at an early stage and take some measures so that the leaked refrigerant does not reach a flammable concentration.
  • a floor-mounted indoor unit disclosed in Patent Literature 1 includes a control board that performs overall control of devices such as a blower fan, a fan motor, and a compressor, and a remote controller that allows a user to monitor the operation, operating state, and abnormality content of the air conditioner. Is provided.
  • the refrigerant sensor is connected to the control board via a wiring including a signal line.
  • a refrigerant sensor is installed at the lower part of the machine room. This is because the specific gravity of the hydrocarbon-based refrigerant is larger than the specific gravity of air, and the concentration of the leaked refrigerant can be effectively measured by installing a refrigerant sensor in the lower part of the machine room.
  • the refrigerant sensor detects refrigerant leaked from the components of the refrigeration cycle such as heat exchangers and union joints, and the floor-standing indoor unit operates the blower fan to diffuse the refrigerant when the concentration reaches a certain value or more. By doing so, the refrigerant concentration is prevented from rising to the flammable concentration.
  • the floor-mounted indoor unit disclosed in Patent Document 1 has a function of displaying the abnormal content on the remote controller in order to notify the user of the content of various abnormalities occurring in the air conditioner.
  • Abnormal contents include refrigerant leakage information indicating that the refrigerant has leaked, communication abnormality information indicating that an abnormality has occurred in communication between the indoor unit and the outdoor unit, and a refrigerant detection signal output from the refrigerant sensor.
  • the disconnection abnormality information indicating that a disconnection has occurred in the signal line transmitting the signal can be exemplified.
  • the conventional floor-standing indoor unit represented by Patent Document 1 is configured to display on the remote controller refrigerant leakage information having a higher priority than information such as communication abnormality and disconnection abnormality. This is to notify the user that the refrigerant has leaked before the refrigerant concentration rises to the flammable concentration, thereby encouraging ventilation of the room where the air conditioner is installed, or by operating the air conditioner by user operation. This is because the refrigerant is forced to diffuse by operating. Accordingly, when the signal line is disconnected after the refrigerant leakage is detected, the disconnection abnormality is not displayed on the remote controller and only the refrigerant leakage information is displayed.
  • the present invention has been made in view of the above, and an object of the present invention is to obtain an air conditioner that can improve workability of measures against disconnection abnormality without impairing measures against leakage of a flammable refrigerant.
  • an air conditioner includes a floor-mounted indoor unit, a control board that is installed in the floor-mounted indoor unit and controls the floor-mounted indoor unit, and a floor-mounted indoor unit.
  • the refrigerant sensor that is installed in the indoor unit and outputs a detection signal whose on-duty is changed according to the detected refrigerant concentration, and the signal transmission path that is installed in the floor-mounted indoor unit and transmits the detection signal to the control board are disconnected.
  • a light emitting unit that changes to a second lighting state indicating that the signal transmission path is not disconnected.
  • the air conditioner according to the present invention has an effect that it is possible to improve workability of measures against disconnection abnormality without impairing measures against leakage of flammable refrigerant.
  • FIG. 1 is an external view of an air conditioner according to an embodiment of the present invention.
  • Interior view of the floor-mounted indoor unit shown in FIG. The figure which shows the connection state of the remote control with which the air conditioner which concerns on embodiment of this invention is equipped, a control board, a relay board, and a refrigerant
  • FIG. 1 is an external view of an air conditioner according to an embodiment of the present invention.
  • the air conditioner 100 includes an outdoor unit 1, a floor-mounted indoor unit 2 connected to the outdoor unit 1, and a pipe 3 through which the outdoor unit 1 and the floor-mounted indoor unit 2 are connected to each other to flow a refrigerant.
  • a flammable hydrocarbon-based refrigerant is used.
  • the floor-standing indoor unit 2 includes a housing 20, a front panel 21 installed in front of the housing 20, and a remote controller 22.
  • the remote controller 22 may be simply referred to as “remote controller 22”.
  • the housing 20 is a hollow box, and a front opening is formed on the front surface of the housing 20.
  • a front panel 21 is detachably attached to the front opening of the housing 20.
  • the front panel 21 is provided with an air suction port 21 a formed on the lower side of the front panel 21 and an air outlet port 21 b formed on the upper side of the front panel 21.
  • the front panel 21 is provided with a remote controller 22 between the air inlet 21a and the air outlet 21b.
  • the remote controller 22 is a user interface for the user to operate the air conditioner 100, and for the user to monitor the operation state and details of the abnormality of the air conditioner 100.
  • Examples of the driving operation include an operation for starting the operation of the air conditioner 100, an operation for stopping the operation of the air conditioner 100, and an operation for switching the operation mode.
  • refrigerant leakage information indicating that the refrigerant has leaked from the components constituting the refrigeration cycle of the air conditioner 100 and communication between the floor-standing indoor unit 2 and the outdoor unit 1 indicate that an abnormality has occurred.
  • Communication abnormality information and disconnection abnormality information indicating that a disconnection has occurred in a signal line to be described later can be exemplified.
  • the remote controller 22 includes a display unit 22a that displays these operating states and details of the abnormality.
  • refrigerant leakage information having a higher priority than information such as communication abnormality information and disconnection abnormality information is displayed on the display unit 22a of the remote controller 22.
  • the disconnection abnormality information is not displayed on the display unit 22a of the remote controller 22, and only the refrigerant leakage information is displayed.
  • the service person who performs the refrigerant leakage countermeasure only performs the refrigerant leakage countermeasure. Therefore, it is necessary to notice the disconnection abnormality after the refrigerant leakage countermeasure is completed, and to perform the disconnection abnormality countermeasure again.
  • the air conditioner 100 has a first lighting state indicating that a disconnection has occurred in a signal line that transmits a detection signal output from the refrigerant sensor to the control board; And a light emitting section that changes to a second lighting state indicating that the signal line is not disconnected.
  • the air conditioner 100 is configured so that a serviceman can check whether there is a disconnection abnormality by changing the lighting state of the light emitting unit.
  • the example of a structure is demonstrated concretely.
  • FIG. 2 is an interior view of the floor-mounted indoor unit shown in FIG.
  • the housing 20 of the floor-mounted indoor unit 2 shown in FIG. 2 is formed with a lower space 200 that constitutes an intake portion and an upper space 201 that is located above the lower space 200 and serves as a heat exchange portion.
  • the lower space 200 and the upper space 201 are partitioned by the partition portion 4.
  • the partition 4 has a flat plate shape and is installed at the center in the vertical direction of the housing 20.
  • An air passage opening 4 a serving as an air passage between the lower space 200 and the upper space 201 is formed in the partition portion 4.
  • the lower space 200 is provided on the back side of the air suction port 21 a shown in FIG. 1 and is exposed to the front side by removing the air suction port 21 a from the front panel 21.
  • the upper space 201 is provided on the back side of the air outlet 21 b shown in FIG. 1 and is exposed to the front side by removing the air outlet 21 b from the front panel 21.
  • an indoor blower fan 5 is installed that generates an air flow from the air inlet 21a shown in FIG. 1 toward the air outlet 21b.
  • the indoor blower fan 5 is a sirocco fan that is connected to the output shaft 5b of the motor 5a and includes an impeller 5c in which a plurality of blades are arranged at equal intervals in the circumferential direction.
  • the indoor fan 5 is covered with a spiral fan casing 6.
  • the fan casing 6 is installed at a position facing the air suction port 21a shown in FIG. Since the fan casing 6 is installed below the partition portion 4, the inside of the fan casing 6 is a part of the lower space 200.
  • a refrigerant sensor 7 for detecting refrigerant leakage and a rectangular parallelepiped electric component box 8 are installed in the lower space 200.
  • the electrical box 8 is installed above the indoor fan 5, and a control board 9 and a relay board 10 for controlling the floor-mounted indoor unit 2 are installed inside the electrical box 8.
  • the control board 9 has a drive control function that controls and controls the controlled devices that make up the air conditioner 100, and an abnormality that displays the details of the abnormality that has occurred in the air conditioner 100 on the display unit 22a of the remote controller 22 shown in FIG. Display function.
  • the controlled devices are various devices (not shown) such as a fan motor, a wind direction plate, a compressor, and a propeller fan mounted on the floor-mounted indoor unit 2 and the outdoor unit 1.
  • Abnormal contents by the abnormality display function include refrigerant leakage information, refrigerant leakage information, communication abnormality information indicating that an abnormality has occurred in communication between the floor-mounted indoor unit 2 and the outdoor unit 1, and disconnection in the wiring 7a.
  • the disconnection abnormality information indicating that the error occurred.
  • the refrigerant sensor 7 includes a wiring 7 a for transmitting the detection signal 71 output from the refrigerant sensor 7 to the control board 9, and the wiring 7 a is connected to the relay board 10.
  • the refrigerant sensor 7 is installed below the indoor fan 5 and detects the concentration of the refrigerant in the air around the refrigerant sensor 7.
  • the refrigerant sensor 7 outputs a detection signal 71 in which the on-duty is changed according to the detected refrigerant concentration. Details of the configuration of the refrigerant sensor 7 will be described later.
  • the upper space 201 is located downstream of the lower space 200 in the air flow generated by the indoor blower fan 5.
  • the indoor heat exchanger 11 is disposed in the upper space 201.
  • One end of an indoor pipe 11a through which the refrigerant flows is connected to the indoor heat exchanger 11, and a joint portion 12a is installed at the other end of the indoor pipe 11a.
  • the indoor pipe 11 a penetrates the partition part 4, and the joint part 12 a is located in the lower space 200.
  • a joint portion 12b is installed at one end of the pipe 3 which is an extension pipe.
  • the refrigerant may leak due to the brazing part 13 between the indoor heat exchanger 11 and the indoor pipe 11a, and the joint part 12a and the joint part 12b. It is the connection part 14.
  • the refrigerant used in the air conditioner 100 according to the present embodiment is a combustible refrigerant whose specific gravity is larger than that of air. Therefore, when the refrigerant leaks from at least one of the brazing part 13 and the connection part 14, the concentration of the refrigerant in the lower space 200 increases. By installing the refrigerant sensor 7 below the lower space 200, the concentration of the refrigerant stored on the bottom surface of the lower space 200 can be accurately measured.
  • the detection signal 71 output from the refrigerant sensor 7 is received by the control board 9 via the wiring 7 a and the relay board 10.
  • the indoor blower fan 5 is operated to diffuse the refrigerant, thereby the refrigerant concentration. Prevents from rising to flammable concentration.
  • FIG. 3 is a diagram showing a connection state of a remote controller, a control board, a relay board, and a refrigerant sensor provided in the air conditioner according to the embodiment of the present invention.
  • FIG. 4 is a diagram showing a detailed configuration of the control board, the relay board, and the refrigerant sensor shown in FIG.
  • a wire 22b is connected to the remote controller 22, and a connector 22c is provided on the wire 22b.
  • the control board 9 includes a control unit 9a, a connection terminal 9b, and a connection terminal 9c.
  • the control unit 9a has the drive control function and the abnormality display function described above.
  • the relay board 10 includes a lighting control unit 10a, a connection terminal 10b, and a connection terminal 10c.
  • the connection terminals 10b and 10c are each connected to the lighting control unit 10a.
  • the control board 9 and the relay board 10 are connected by a wiring 16. Specifically, the connector 16 a provided on one end side of the wiring 16 is connected to the connection terminal 9 b of the control board 9. The connector 16 b provided on the other end side of the wiring 16 is connected to the connection terminal 10 c of the relay substrate 10.
  • the refrigerant sensor 7 includes a refrigerant detection circuit 7d. Details of the refrigerant detection circuit 7d will be described later.
  • the refrigerant sensor 7 is connected to the relay board 10 by the wiring 7a. Specifically, the connector 7b provided on one end side of the wiring 7a is connected to the connection terminal 10b of the relay board 10. A connector 7 c provided on the other end side of the wiring 7 a is connected to the refrigerant sensor 7.
  • the control board 9 shown in FIG. 4 supplies the control unit 9a, the connection terminal 9b, the resistor 9d that is a pull-down resistor for stabilizing the potential of the signal line, the power source 9e, and the power of the power source 9e to the refrigerant sensor 7.
  • the relay board 10 shown in FIG. 4 includes a lighting control unit 10a, a connection terminal 10b, a connection terminal 10c, and a power source 10d.
  • the power source 10d has the same potential as that of the power source 9e.
  • the lighting control unit 10a includes a light emitting diode (LED) 302, a resistor 303 for adjusting a current value flowing through the LED 302, a resistor 310 that is a pull-down resistor for stabilizing the potential of the signal line, And a buffer circuit 320 for transmitting a signal to the LED 302 without affecting the potentials of the signal lines 7f, 9g, and 10e.
  • the light emitting unit provided in the lighting control unit 10 a is not limited to the LED 302, and a photoelectric element such as a laser or a lamp may be used instead of the LED 302.
  • the buffer circuit 320 includes an NPN transistor 304, a resistor 305 having one end connected to the base of the transistor 304 and the other end connected to the emitter of the transistor 304, a PNP transistor 307, and one end of the transistor 304. And a resistor 306 having the other end connected to the collector of the transistor 307.
  • the buffer circuit 320 has one end connected to the power supply 10d and the emitter of the transistor 307 and the other end connected to the base of the transistor 307, and one end connected to the base of the transistor 307 and the other end connected to the signal line 10e.
  • the lighting control unit 10a may use an operational amplifier instead of the buffer circuit 320, or may use a base ground circuit using one transistor.
  • the refrigerant sensor 7 includes a refrigerant detection circuit 7d, a connector 7c, a power supply 7e having the same potential as the power supplies 9e and 10d, and a signal for transmitting the detection signal 71 output from the refrigerant detection circuit 7d to the control unit 9a.
  • the refrigerant detection circuit 7d includes a transistor 402 for changing the potentials of the signal lines 7f, 9g, and 10e, a sensor element 403 for detecting the refrigerant, and an on / off state of the transistor 402 according to the refrigerant concentration detected by the sensor element 403. And a control unit 404 that controls timing.
  • a power supply 7e necessary for the operation of the transistor 402 and the refrigerant detection circuit 7d is supplied from a power supply 9e of the control board 9.
  • the transistor 402 is used, but a switching element such as an operational amplifier or a relay may be used instead of the transistor 402.
  • FIG. 5 is a diagram showing an example of a pulse width modulation signal output from a control unit provided in the refrigerant sensor shown in FIG.
  • FIG. 5A shows a pulse width modulation signal 404a output from the control unit 404 when the concentration of the refrigerant detected by the sensor element 403 is less than a certain value.
  • the on-duty which is the ratio of the on-time Ton to one period T of the pulse width modulation signal 404a, is 30%.
  • FIG. 5B shows a pulse width modulation signal 404a output from the control unit 404 when the concentration of the refrigerant detected by the sensor element 403 is equal to or higher than a certain value.
  • the on-duty is 70%.
  • the control unit 404 generates the pulse width modulation signal 404a that increases the on-duty as the refrigerant concentration detected by the sensor element 403 increases.
  • a thermistor whose resistance value changes by utilizing a cooling action by a refrigerant can be exemplified. Specifically, as the refrigerant concentration increases, the resistance value of the thermistor decreases and the current value input from the power source 7e to the control unit 404 increases. Based on the magnitude of the current value, the control unit 404 changes the on-duty of the pulse width modulation signal 404a as shown in FIG.
  • the power supply 7e necessary for the operation of the transistor 402 and the refrigerant detection circuit 7d is supplied from the control board 9, and the pulse width modulation signal 404a corresponding to the refrigerant concentration detected by the sensor element 403 is turned on. Duty changes. As a result, the transistor 402 is controlled, and the on-duty of the detection signal 71 changes. Accordingly, the potential applied to the signal lines 7f, 9g, and 10e connected to the collector of the transistor 402 changes.
  • the controller 9a can determine whether the concentration of the refrigerant is equal to or higher than a certain value by measuring the on-duty of the detection signal 71.
  • the resistance 9d of the control board 9 is sufficiently large, so that the transistor 307 of the relay board 10 is turned off, and the transistor 304 of the relay board 10 is pulled down by the resistor 305. Turns off. As a result, since a current flows through the LED 302 via the resistor 303, the LED 302 of the relay board 10 emits light and enters a lighting state.
  • the transistor 402 of the refrigerant sensor 7 when the transistor 402 of the refrigerant sensor 7 is turned on, a base current determined by the resistor 309 flows, and the transistor 307 of the relay substrate 10 is turned on.
  • a base current determined by the resistor 306 is supplied to the transistor 304 of the relay substrate 10, so that the transistor 304 is turned on.
  • the collector-emitter voltage of the transistor 304 is sufficiently smaller than the forward voltage of the LED 302 on the relay substrate 10, so that the LED 302 is turned off.
  • the detection signal 71 sent from the refrigerant sensor 7 is converted into a light emission signal in the LED 302 of the relay substrate 10.
  • connection state between the control board 9 and the relay board 10 is released.
  • the power of the power source 9e is not supplied to the relay board 10 and the refrigerant sensor 7, so that the LED 302 of the relay board 10 is turned off.
  • connection state between the relay substrate 10 and the refrigerant sensor 7 is released.
  • the relay substrate 10 is turned off because the transistor 402 of the refrigerant sensor 7 is turned off.
  • the signal line 7f, the wiring 7a, the signal line 10e, the wiring 16, and the signal line 9g, which are signal transmission paths of the refrigerant sensor 7, are not disconnected, whether or not the refrigerant sensor 7 detects the refrigerant. Regardless of the LED 302 blinks. On the other hand, when the signal transmission path of the refrigerant sensor 7 is disconnected, the LED 302 is turned on or off. Therefore, the service person can determine that one of the signal transmission paths of the refrigerant sensor 7 is disconnected by confirming that the LED 302 is turned on or off.
  • Control unit 9a determines that the refrigerant has not leaked when receiving detection signal 71 with a short on-duty shown in FIG. 5A, and does not display the refrigerant leak information on remote controller 22. On the other hand, the control unit 9a determines that the refrigerant has leaked when receiving the detection signal 71 having a long on-duty shown in FIG. 5 (2), and uses refrigerant leakage information having a higher priority than information such as communication abnormality and disconnection abnormality. It is displayed on the remote controller 22.
  • the air conditioner 100 After the refrigerant leakage information is displayed on the remote controller 22, only the refrigerant leakage information is displayed on the remote controller 22 even when the signal transmission path of the refrigerant sensor 7 is disconnected.
  • the LED 302 when the signal transmission path of the refrigerant sensor 7 is not disconnected, the LED 302 blinks at a constant cycle, and when the signal transmission path of the refrigerant sensor 7 is disconnected, the LED 302 is Turns on or off.
  • the serviceman can immediately confirm the disconnection abnormality that is not displayed on the remote controller 22 by confirming the lighting state of the LED 302. Therefore, according to the air conditioner 100 according to the present embodiment, measures against refrigerant leakage and breakage abnormality can be performed at the same time, and workability is improved.
  • the display of the refrigerant leakage information is maintained even when the refrigerant concentration falls below a certain value.
  • the service person who takes measures against refrigerant leakage can grasp the disconnection abnormality by checking the lighting state of the LED 302.
  • the lighting control unit 10a may be provided on the control board 9.
  • the lighting control unit 10a may be provided on the control board 9.
  • the connector 7 b of the refrigerant sensor 7 is connected to the connection terminal 9 b of the control board 9.
  • the lighting control unit 10a provided on the relay board 10 turns off the LED 302 when the wiring 16 serving as a signal transmission path between the control board 9 and the relay board 10 is disconnected, and the relay board 10 and the refrigerant sensor 7 are turned off.
  • the LED 302 is turned on when the wiring 7a serving as a signal transmission path between the two is disconnected.
  • the light emitting unit is turned on or off in the first lighting state indicating that the signal transmission path of the refrigerant sensor 7 is disconnected, and the signal transmission path of the refrigerant sensor 7 is disconnected.
  • the lighting control unit 10a that blinks the light-emitting unit in the second lighting state indicating that the signal is not present, the service person can easily grasp whether or not the signal transmission path of the refrigerant sensor 7 is disconnected.
  • the control board 9 and the relay board 10 are electrically connected by connecting the connector to the connection terminal, and the relay board 10 and the refrigerant sensor 7 are further electrically connected is described.
  • the wiring 7a, 16, 22b may be directly connected to the connection terminal without using a connector, or the wiring 7a, 16, 22b may be soldered to a wiring pattern (not shown) on the control board 9 and the relay board 10. It may be configured to connect with.
  • the example in which the LED 302 is provided on the control board 9 or the relay board 10 has been described.
  • the LED 302 may be installed at any location outside the electrical component box 8 illustrated in FIG.
  • the LED 302 When the LED 302 is provided on the control board 9 or the relay board 10, it is not shown for connecting the LED 302 to the lighting control unit 10a as compared with the case where the LED 302 is installed at any location outside the electrical component box 8. Wiring can be shortened or omitted, the configuration of the control board 9 or the relay board 10 is simplified, the yield is improved, and the reliability is improved.
  • the LED 302 When the LED 302 is provided outside the electrical box 8, the visibility of the LED 302 is improved as compared with the case where the LED 302 is installed on the control board 9 or the relay board 10, and workability for measures against disconnection abnormality is improved.
  • the configuration described in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and can be combined with other configurations without departing from the gist of the present invention. It is also possible to omit or change the part.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Human Computer Interaction (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

La présente invention concerne un climatiseur qui est pourvu de : une unité intérieure de type placé au sol ; une carte de commande (9) qui commande l'unité intérieure de type placé au sol ; un capteur de réfrigérant (7) qui est disposé sur l'unité intérieure de type placé au sol et qui émet un signal de détection (71) dont le service de marche est modifié en fonction de la concentration de réfrigérant détectée ; et une LED (302) qui est disposée sur l'unité intérieure de type placé au sol et qui sert d'unité électroluminescente qui change entre un premier état de marche indiquant la déconnexion d'un trajet de transmission de signal pour transmettre le signal de détection (71) à la carte de commande (9) et un deuxième état de marche indiquant la non-déconnexion du trajet de transmission de signal.
PCT/JP2016/064362 2016-05-13 2016-05-13 Climatiseur WO2017195365A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP16901713.4A EP3457043B1 (fr) 2016-05-13 2016-05-13 Climatiseur
CN201680085455.5A CN109073263A (zh) 2016-05-13 2016-05-13 空气调和机
PCT/JP2016/064362 WO2017195365A1 (fr) 2016-05-13 2016-05-13 Climatiseur
JP2018516324A JP6587743B2 (ja) 2016-05-13 2016-05-13 空気調和機

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Application Number Priority Date Filing Date Title
PCT/JP2016/064362 WO2017195365A1 (fr) 2016-05-13 2016-05-13 Climatiseur

Publications (1)

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WO2017195365A1 true WO2017195365A1 (fr) 2017-11-16

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PCT/JP2016/064362 WO2017195365A1 (fr) 2016-05-13 2016-05-13 Climatiseur

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JP6587743B2 (ja) 2019-10-09
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CN109073263A (zh) 2018-12-21
JPWO2017195365A1 (ja) 2018-08-16
EP3457043A1 (fr) 2019-03-20

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