WO2016135925A1 - Dispositif à cycle frigorifique - Google Patents

Dispositif à cycle frigorifique Download PDF

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Publication number
WO2016135925A1
WO2016135925A1 PCT/JP2015/055636 JP2015055636W WO2016135925A1 WO 2016135925 A1 WO2016135925 A1 WO 2016135925A1 JP 2015055636 W JP2015055636 W JP 2015055636W WO 2016135925 A1 WO2016135925 A1 WO 2016135925A1
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WIPO (PCT)
Prior art keywords
refrigeration cycle
power supply
cycle apparatus
leakage sensor
indoor unit
Prior art date
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PCT/JP2015/055636
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English (en)
Japanese (ja)
Inventor
智昭 小畑
和彦 河合
岩田　明彦
裕右 小山
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.)
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Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2017501775A priority Critical patent/JP6320618B2/ja
Priority to PCT/JP2015/055636 priority patent/WO2016135925A1/fr
Publication of WO2016135925A1 publication Critical patent/WO2016135925A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
    • 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
    • F24F11/89—Arrangement or mounting of control or safety devices
    • 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
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle

Definitions

  • the present invention relates to a refrigeration cycle apparatus that operates by receiving DC power supply.
  • a refrigeration cycle apparatus such as an air conditioner is operated by supplying a three-phase AC power from a commercial power source or a generator (see, for example, Patent Document 1).
  • electrical components for example, a compressor motor, a blower motor, or a solenoid valve
  • constituting the refrigeration cycle apparatus operate using a three-phase AC 200 V, a single-phase AC 200 V, a DC 12 V, or the like as a primary power source. Therefore, in such a refrigeration cycle apparatus, other voltages are generated from three-phase AC200V as a primary power source.
  • a large capacity inverter apparatus is generally used (for example, refer patent document 2).
  • a method is generally used in which three-phase or two-phase alternating current is rectified to generate a DC bus voltage for driving the inverter.
  • FIG. 19 is a circuit configuration showing an outline of an electric circuit of the AC refrigeration cycle apparatus 1000.
  • the AC refrigeration cycle apparatus 1000 includes a compressor motor 1002, a DC / AC converter 1003, a smoothing capacitor 1004, a relay 1005, an inrush prevention resistor circuit 1006, a three-phase full-wave rectifier circuit 1007, and a zero cross sensor 1014.
  • the compressor motor 1002 drives a compressor (not shown).
  • the DC / AC converter 1003 drives the compressor motor 1002.
  • the smoothing capacitor 1004 smoothes the current supplied to the DC / AC converter 1003.
  • the relay 1005 and the inrush prevention resistance circuit 1006 are for suppressing an inrush current flowing into the smoothing capacitor 1004.
  • the three-phase full-wave rectifier circuit 1007 rectifies alternating current into direct current.
  • the zero cross sensor 1014 detects the presence of an AC voltage.
  • the operation of the AC refrigeration cycle apparatus 1000 will be described.
  • the AC refrigeration cycle apparatus 1000 takes in the voltage supplied from the AC system 1009 through the system impedance 1011 and the AC circuit breaker 1008. System voltage taken into AC refrigeration cycle apparatus 1000 is converted from AC to DC by three-phase full-wave rectifier circuit 1007.
  • the voltage converted to direct current by the three-phase full-wave rectifier circuit 1007 is supplied to the smoothing capacitor 1004 through the relay 1005 and the inrush prevention resistor circuit 1006.
  • the DC bus voltage smoothed by the smoothing capacitor 1004 is input to the DC / AC converter 1003.
  • the compressor motor 1002 is driven.
  • the relay 1005 and the inrush prevention resistance circuit 1006 are provided to suppress an inrush current flowing from the AC system into the smoothing capacitor 1004 when power is supplied from the AC circuit breaker 1008.
  • the AC refrigeration cycle apparatus 1000 opens the relay 1004 when the power is turned on from the AC circuit breaker 1008, and slowly charges the smoothing capacitor 1004 with a low current through the inrush prevention resistance from the system. Thereafter, AC refrigeration cycle apparatus 1000 closes relay 1005 after DC voltage is sufficiently charged in smoothing capacitor 1004, and starts driving of compressor motor 1002 by DC / AC converter 1003.
  • the AC circuit breaker 1008 is opened for some reason during operation, and the open state of the AC circuit breaker 1008 is determined in order to prevent an excessive inrush current from flowing during re-entry.
  • the inrush prevention relay 1005 is opened.
  • the AC circuit breaker 1008 is opened when the voltage of the smoothing capacitor 1004 becomes a predetermined value or less.
  • the predetermined value is set to a value smaller than the lower limit value of the allowable system voltage. For example, a DC voltage of ⁇ 10% down for an AC400V system that needs to be continuously operated is about 509V.
  • the open state determination level is set to a value lower than that, the AC circuit breaker 1008 is opened. After that, when the voltage of the smoothing capacitor 1004 decreases, the open state of the AC circuit breaker 1008 can be determined.
  • the presence of the AC voltage input to the AC refrigeration cycle apparatus 1000 is grasped by the zero cross sensor 1014, and when there is no point crossing zero in the AC voltage, there is no AC, that is, the AC circuit breaker 1008.
  • the relay 1005 can be opened immediately after the circuit breaker 1008 is opened. Inrush current can be prevented at the time of turning on.
  • FIG. 20 is a circuit configuration showing an outline of an electric circuit of the DC refrigeration cycle apparatus 2000.
  • the DC refrigeration cycle apparatus 2000 includes a compressor motor 2002, a DC / AC converter 2003, a smoothing capacitor 2004, a relay 2005, and an inrush prevention resistance circuit 2006. These function similarly to the compressor motor 1002, the DC / AC converter 1003, the smoothing capacitor 1004, the relay 1005, and the inrush prevention resistance circuit 1006 provided in the AC refrigeration cycle apparatus 1000.
  • DC voltage is supplied to the DC refrigeration cycle apparatus 2000 through an AC / DC converter 2013 that converts the voltage of the AC system 2009 into DC and a circuit breaker 2011 that opens and closes the DC.
  • a battery 2012 is installed on the output side of the AC / DC converter 2013. The battery 2012 is installed to stabilize high-voltage direct current.
  • the operation of the DC refrigeration cycle apparatus 2000 will be described.
  • the voltage supplied from the AC system 2009 is converted to a high-voltage DC (about DC 380 V in the case of an AC 400 V system) by the AC / DC converter 2013 and then taken in through the DC circuit breaker 2011. .
  • the DC voltage taken into the DC refrigeration cycle apparatus 2000 is supplied to the smoothing capacitor 2004 through the relay 2005 and the inrush prevention resistance circuit 2006.
  • the DC voltage smoothed by the smoothing capacitor 2004 is input to the DC / AC converter 2003.
  • the compressor motor 2002 is driven.
  • Non-Patent Document 1 when applied to an air conditioning system for a data center, as shown in Non-Patent Document 1, it is equivalent to one DC / AC converter on the uninterruptible power supply side.
  • One AC / DC converter on the load side is unnecessary, and power loss can be reduced.
  • the battery 2012 not only stabilizes the DC voltage, but also functions as a backup when the AC system 2009 is not supplied due to a power failure or the like.
  • the output voltage of the battery 2012 varies depending on the state of charge (remaining amount), and the minimum output voltage generally decreases to about 70% with respect to the maximum output voltage.
  • the AC system 2009 is an AC 400V system
  • the high-voltage DC voltage is set to about 380V, but the minimum output voltage of the battery 2012 at that time is about 270V.
  • an earth leakage breaker is attached to the outside. Therefore, at the time of electric leakage, the attached electric leakage breaker can interrupt
  • the DC input type refrigeration cycle apparatus there are few breakers corresponding to electric leakage and they are expensive. For this reason, in a DC input type refrigeration cycle apparatus, it is rare that a breaker corresponding to electric leakage is attached.
  • the present invention has been made to solve the above-described problems.
  • a DC power supply circuit breaker hereinafter referred to as a DC circuit breaker
  • safety at the time of electric leakage is achieved. It aims at providing the refrigerating cycle device which secures.
  • a refrigeration cycle apparatus includes a compressor, a condenser, a decompression device, a refrigerant circuit in which an evaporator is connected by a refrigerant pipe, and a blower attached to at least one of the condenser and the evaporator.
  • a refrigeration cycle apparatus configured to be operable by feeding from a DC power supply device provided outside, and a DC leakage sensor for detecting leakage of the DC power supplied from the DC power supply device And a DC circuit breaker that cuts off the direct current power supplied from the direct current power supply device according to a signal from the direct current leakage sensor, and the direct current leakage sensor and the direct current breaker are provided downstream of the direct current power supply device. It is a thing.
  • the DC leakage sensor and the DC circuit breaker are provided, the DC power supply can be cut off even if the leakage of the DC power supply occurs, and safety is sufficiently considered. become.
  • 1 is a schematic circuit diagram schematically showing a configuration of a refrigeration cycle apparatus according to Embodiment 1 of the present invention.
  • 1 is a system configuration diagram schematically showing an example of a power cutoff configuration of a refrigeration cycle apparatus according to Embodiment 1 of the present invention.
  • It is a system block diagram which shows roughly another example of the power supply cutoff structure of the refrigerating-cycle apparatus which concerns on Embodiment 1 of this invention.
  • It is a system block diagram which shows roughly an example of the power supply cutoff structure of the refrigerating-cycle apparatus which concerns on Embodiment 2 of this invention.
  • It is a system block diagram which shows roughly another example of the power-supply-cutoff structure of the refrigerating-cycle apparatus which concerns on Embodiment 2 of this invention.
  • FIG. 1 is a schematic circuit diagram schematically showing a configuration of a refrigeration cycle apparatus 100 according to Embodiment 1 of the present invention. Based on FIG. 1, the apparatus structure of the refrigerating cycle apparatus 100 is demonstrated. In addition, the refrigerating cycle apparatus 100 demonstrated here is an example of an apparatus provided with the refrigerating cycle to the last, and this invention is not applied only to the refrigerating cycle apparatus 100 shown here. For example, the number of outdoor units (heat source units) and indoor units (load side units) is not limited, and the number of components mounted on them is not limited. Moreover, what is necessary is just to determine the mounting unit of a component apparatus according to the use of the refrigerating-cycle apparatus 100. FIG.
  • the refrigeration cycle apparatus 100 includes an indoor unit 60 and an outdoor unit 50.
  • the indoor unit 60 and the outdoor unit 50 are connected by refrigerant pipes 10 and 11.
  • the expansion valve 3, the use side heat exchanger 4, and the compressor 1 are connected in series and mounted.
  • the indoor electromagnetic valve 5 is mounted in parallel with the compressor 1, and a pressure switch 9 is mounted on the discharge side of the compressor 1.
  • the indoor unit 60 is equipped with an indoor blower 8 that is rotated by a fan motor 8a. Furthermore, the indoor unit 60 is provided with an indoor control device 40.
  • the expansion valve 3 is for expanding the refrigerant under reduced pressure, and may be an electronic expansion valve whose opening degree can be variably controlled.
  • the use side heat exchanger 4 functions as an evaporator during cooling operation and as a condenser during heating.
  • an indoor blower 8 composed of a centrifugal fan, a multiblade fan or the like for supplying air is provided.
  • the indoor blower 8 is configured, for example, of a type in which the rotation speed is controlled by an inverter and the air volume is controlled. That is, the use side heat exchanger 4 exchanges heat between the air supplied from the indoor blower 8 and the refrigerant, and evaporates or condenses the refrigerant.
  • the compressor 1 sucks a refrigerant and compresses the refrigerant to a high temperature and high pressure state.
  • the compressor 1 is of a type in which the rotation speed is controlled by an inverter and the capacity is controlled. Further, the compressor 1 is provided with a belt heater 1a for preventing the refrigerant from sleeping.
  • the indoor electromagnetic valve 5 allows passage of a part of the refrigerant discharged from the compressor 1 by controlling opening and closing.
  • the pressure switch 9 functions as a protection device, and is enclosed in the refrigerant circuit 101 and detects that the pressure of the refrigerant has reached a predetermined pressure.
  • the indoor control device 40 has an arithmetic device 41 having a general-purpose CPU, data bus, input / output port, nonvolatile memory, timer, and the like. This indoor control device 40 determines the opening degree of the expansion valve 3, the rotational speed of the indoor blower 8, the drive frequency of the compressor 1, the indoor electromagnetic wave according to the operation information (indoor air temperature, set temperature, refrigerant pipe temperature, refrigerant pressure, etc.). Predetermined control is performed for opening and closing of the valve 5 and the like. In addition, the indoor control device 40 is connected to the outdoor control device 20 described later by a transmission line (not shown), and can transmit and receive information.
  • a transmission line not shown
  • ⁇ Outdoor unit 50> In the outdoor unit 50, the heat source side heat exchanger 2 is mounted. Here, an example is shown in which two heat source side heat exchangers 2 are connected and mounted in parallel. An outdoor electromagnetic valve 6 is mounted in the outdoor unit 50 in series with one heat source side heat exchanger 2. The outdoor unit 50 is equipped with an outdoor fan 7 that is rotated by a fan motor 7a. Further, the outdoor unit 50 is provided with an outdoor control device 20.
  • the heat source side heat exchanger 2 functions as a condenser during cooling operation and as an evaporator during heating operation.
  • an outdoor fan 7 composed of a centrifugal fan, a multiblade fan, or the like for supplying air is provided.
  • the outdoor blower 7 is configured, for example, as a type in which the rotation speed is controlled by an inverter and the air volume is controlled. That is, the heat source side heat exchanger 2 performs heat exchange between the air supplied from the outdoor blower 7 and the refrigerant, and evaporates or condenses the refrigerant.
  • the outdoor electromagnetic valve 6 allows the passage of a part of the refrigerant to one heat source side heat exchanger 2 by being controlled to open and close.
  • the outdoor control device 20 has an arithmetic device 21 having a general-purpose CPU, a data bus, an input / output port, a nonvolatile memory, a timer, and the like.
  • the outdoor control device 20 determines predetermined values for the rotational speed of the outdoor fan 7 and the opening / closing of the outdoor electromagnetic valve 6 based on the operation information (indoor air temperature, set temperature, refrigerant pipe temperature, refrigerant pressure, etc.) from the indoor unit 60. Take control.
  • the outdoor control device 20 is connected to the indoor control device 40 via a transmission line (not shown), and can transmit and receive information.
  • the refrigeration cycle apparatus 100 includes a refrigerant circuit 101 configured by a refrigeration cycle including the compressor 1, the heat source side heat exchanger 2, the expansion valve 3, and the use side heat exchanger 4.
  • a refrigerant is sealed in the refrigerant circuit 101 of the refrigeration cycle apparatus 100.
  • the refrigerant is made high temperature and high pressure by the compressor 1, discharged from the compressor 1, and flows into the heat source side heat exchanger 2.
  • the refrigerant that has flowed into the heat source side heat exchanger 2 exchanges heat with the air supplied from the outdoor blower 7 and is condensed and liquefied. That is, the refrigerant dissipates heat and changes its state to liquid.
  • the condensed and liquefied refrigerant flows through the refrigerant pipe 10 and flows into the expansion valve 3.
  • the refrigerant flowing into the expansion valve 3 is decompressed and expanded, and changes its state to a low-temperature / low-pressure gas-liquid two-phase refrigerant of liquid and gas.
  • This gas-liquid two-phase refrigerant flows into the use side heat exchanger 4.
  • the gas-liquid two-phase refrigerant that has flowed into the use-side heat exchanger 4 exchanges heat with the air supplied from the indoor blower 8 to evaporate. That is, it absorbs heat from the air (cools the air) and changes its state to gas.
  • the evaporated gasified refrigerant flows out of the use side heat exchanger 4, passes through the refrigerant pipe 11, and is sucked into the compressor 1 again.
  • the air supplied to the usage-side heat exchanger 4 is cooled by the evaporation heat of the refrigerant flowing into the usage-side heat exchanger 4, and is supplied to the cooling target area where the indoor unit 60 is installed by the indoor fan 8.
  • the temperature rises by cooling the area to be cooled or the heat generating equipment installed.
  • the air whose temperature has risen is supplied again to the use-side heat exchanger 4 by the indoor blower 8, and is cooled by the evaporation heat of the refrigerant. In this way, air (for example, room air) is circulated.
  • the necessity of the capacity is determined based on the difference between the suction temperature into the indoor unit 60 or the blow-out temperature from the indoor unit 60 and the set temperature that is the target value, and the operation of the compressor 1 is stopped.
  • Thermo-off control is performed. Once the thermostat is turned off, the necessity of the capacity is determined based on the difference between the suction temperature into the indoor unit or the blowout temperature from the indoor unit and the set temperature that is the target value, and the compressor 1 starts operating. Thermo-on control is performed.
  • FIG. 2 is a system configuration diagram schematically illustrating an example of a power shut-off configuration of the refrigeration cycle apparatus 100. Based on FIG. 2, an example of the power shutoff configuration of the refrigeration cycle apparatus 100 will be described.
  • the refrigeration cycle apparatus 100 is configured to be able to operate by receiving power from a DC power source.
  • the electrical connection state of the apparatus (the compressor 1 and the fan motor (fan motor 7a and fan motor 8a)) which operate
  • a DC power supply device 200 is connected to the indoor unit 60.
  • the outdoor unit 50 is connected to the indoor unit 60. That is, the outdoor unit 50 and the indoor unit 60 are supplied with DC power from the DC power supply device 200.
  • the DC power supply device 200 and the indoor unit 60 are connected by a communication line 201.
  • the refrigeration cycle apparatus 100 can obtain power supply information such as a DC voltage supplied from the DC power supply apparatus 200 and a remaining battery level.
  • the refrigeration cycle apparatus 100 is used for output control of the compressor 1 and the fan motor (fan motor 7a and fan motor 8a) based on the acquired power supply information.
  • the voltage of the DC power supply fed from the DC power supply device 200 is set to 200 V or higher.
  • the indoor unit 60 and the outdoor unit 50 are connected by a communication line 301.
  • An earth leakage sensor 400 is connected between the DC power supply device 200 and the indoor unit 60.
  • a DC circuit breaker 401 is connected to the upstream side of the leakage sensor 400.
  • the leakage sensor 400 detects leakage of the DC power supplied from the DC power supply device 200.
  • leakage signal 405 is output from leakage sensor 400 to DC circuit breaker 401.
  • the DC circuit breaker 401 receives the leakage signal 405 output from the leakage sensor 400, the DC breaker 401 blocks the DC power supply.
  • FIG. 3 is a system configuration diagram schematically illustrating another example of the power shut-off configuration of the refrigeration cycle apparatus 100. Based on FIG. 3, another example of the power cutoff configuration of the refrigeration cycle apparatus 100 will be described.
  • FIG. 2 shows an example in which the leakage sensor 400 is connected to the outside of the indoor unit 60
  • FIG. 3 shows an example in which the leakage sensor 400 is connected to the inside of the indoor unit 60. Even with such a configuration, it is possible to ensure safety as in FIG.
  • the DC power supply device 200 may be connected to the outdoor unit 50. In this case, DC power from the DC power supply device 200 is supplied to the indoor unit 60 via the outdoor unit 50.
  • a high-voltage DC power supply (DC power supply apparatus 200) can be used as a primary power supply. That is, as the direct current for driving the inverter device used in the refrigeration cycle apparatus 100, the supplied high direct-current voltage can be used as it is. Therefore, in the refrigeration cycle apparatus 100, it is possible to achieve a significant system efficiency increase (efficiency improvement). Thereby, the structure of the refrigeration cycle apparatus 100 can be simplified and the efficiency of the refrigeration cycle apparatus 100 can be improved.
  • the refrigeration cycle apparatus 100 since the earth leakage sensor 400 and the DC circuit breaker 401 are provided, even if the earth leakage of the DC power source occurs, the DC power source can be interrupted and the safety is sufficiently considered. become.
  • FIG. FIG. 4 is a system configuration diagram schematically showing an example of the power shut-off configuration of the refrigeration cycle apparatus 100A according to Embodiment 2 of the present invention. Based on FIG. 4, an example of a power cutoff configuration of the refrigeration cycle apparatus 100 ⁇ / b> A will be described. Similar to refrigeration cycle apparatus 100 according to Embodiment 1, refrigeration cycle apparatus 100A is configured to be able to operate by receiving power from a DC power supply. The configuration other than the power shutoff configuration of the refrigeration cycle apparatus 100A is as described in the first embodiment.
  • the DC power supply device 200 is connected to the indoor unit 60.
  • the DC power supply device 200 is connected to each of the indoor unit 60 and the outdoor unit 50. An example is shown.
  • a DC power supply device 200 is connected to each of the outdoor unit 50 and the indoor unit 60. Specifically, the communication line 201 is branched and the DC power supply device 200 is connected to each of the indoor unit 60 and the outdoor unit 50.
  • a leakage sensor 400A is connected between the DC power supply device 200 and the indoor unit 60.
  • a DC circuit breaker 401A is connected to the upstream side of the leakage sensor 400A.
  • the earth leakage sensor 400 ⁇ / b> A detects leakage of the DC power supplied from the DC power supply apparatus 200.
  • leakage signal 405A is output from leakage sensor 400A to DC circuit breaker 401A.
  • the DC breaker 401A receives the leakage signal 405A output from the leakage sensor 400A, the DC breaker 401A blocks the DC power supply.
  • a leakage sensor 400 ⁇ / b> B is connected between the DC power supply device 200 and the outdoor unit 50.
  • a DC circuit breaker 401B is connected to the upstream side of the leakage sensor 400B.
  • the earth leakage sensor 400 ⁇ / b> B detects leakage of the DC power supplied from the DC power supply device 200.
  • leakage signal 405B is output from leakage sensor 400B to DC breaker 401B.
  • the DC circuit breaker 401B receives the leakage signal 405B output from the leakage sensor 400B, the DC breaker 401B cuts off the DC power supply.
  • the leakage sensors 400A and 400B and the DC breakers 401A and 401B function as safety devices, thereby ensuring safety. .
  • FIG. 5 is a system configuration diagram schematically showing another example of the power cutoff configuration of the refrigeration cycle apparatus 100A. Based on FIG. 5, another example of the power shut-off configuration of the refrigeration cycle apparatus 100A will be described.
  • FIG. 4 shows an example in which a leakage sensor is connected to each of the indoor unit 60 and the outdoor unit 50.
  • the leakage sensor 400A and the DC circuit breaker 401A are commonly used for the indoor unit 60 and the outdoor unit 50.
  • An example of possible connections is shown.
  • the leakage sensor 400 ⁇ / b> A and the DC circuit breaker 401 ⁇ / b> A can be commonly used for the indoor unit 60 and the outdoor unit 50 by branching the communication line 201 on the downstream side of the leakage sensor 400 ⁇ / b> A. Even with such a configuration, it is possible to ensure safety as in FIG.
  • a high-voltage DC power supply (DC power supply apparatus 200) can be used as a primary power supply. That is, as the direct current for driving the inverter device used in the refrigeration cycle apparatus 100A, the supplied high direct-current voltage can be used as it is. Therefore, in the refrigeration cycle apparatus 100A, it is possible to greatly improve the efficiency of the system. Thereby, simplification of the configuration of the refrigeration cycle apparatus 100A and higher efficiency of the refrigeration cycle apparatus 100A can be achieved.
  • the DC power source can be shut off even if the DC power source leaks, and the safety is ensured. It will be fully considered.
  • FIG. FIG. 6 is a system configuration diagram schematically showing an example of a power shut-off configuration of the refrigeration cycle apparatus 100B according to Embodiment 3 of the present invention. Based on FIG. 6, an example of the power cutoff configuration of the refrigeration cycle apparatus 100B will be described. Similar to refrigeration cycle apparatus 100 according to Embodiment 1, refrigeration cycle apparatus 100B is configured to be able to operate by receiving power from a DC power supply. In addition, the refrigeration cycle apparatus 100B is configured to be able to operate by receiving power from not only a DC power supply but also an AC power supply. The configurations other than the power supply configuration and the power shut-off configuration from the AC power supply of the refrigeration cycle apparatus 100B are as described in the first embodiment.
  • each of a DC power supply device 200 and an AC power supply device 300 is connected to the indoor unit 60. That is, the indoor unit 60 is supplied with a DC power supply from the DC power supply apparatus 200 and an AC power supply from the AC power supply apparatus 300.
  • the indoor unit 60 and the outdoor unit 50 are connected by a communication line 301A for DC power supply and a communication line 301B for AC power supply.
  • the AC power supply device 300 and the indoor unit 60 are connected by a communication line 211.
  • the power consumption of a refrigeration cycle apparatus is a compressor (specifically a compressor motor) and a blower (specifically a fan motor of a blower) among the components mounted on the refrigeration cycle apparatus. Most are consumed.
  • the electromagnetic valve, pressure switch, and belt heater consume relatively less power than the compressor and blower.
  • the DC power from the DC power supply device 200 is supplied to the compressor 1 and the fan motor (fan motor 7a and fan motor 8a).
  • the AC power from the AC power supply apparatus 300 is supplied to the solenoid valves (the indoor solenoid valve 5 and the outdoor solenoid valve 6), the pressure switch 9 and the belt heater 1a.
  • a leakage sensor 400 and a DC circuit breaker 401 are connected. Thereby, in the refrigeration cycle apparatus 100B, even when the DC power supply has a leakage, the leakage sensor 400 and the DC circuit breaker 401 function as a safety device, thereby ensuring safety.
  • An earth leakage sensor 410 is connected between the AC power supply device 300 and the indoor unit 60.
  • An AC circuit breaker 411 is connected to the upstream side of the leakage sensor 410.
  • the leakage sensor 410 detects leakage of the AC power supplied from the AC power supply apparatus 300.
  • leakage signal 415 is output from leakage sensor 410 to AC circuit breaker 411.
  • AC breaker 411 receives leakage signal 415 output from leakage sensor 410, AC breaker 411 blocks the AC power supply.
  • the leakage sensor 410 and the AC circuit breaker 411 function as a safety device to ensure safety. It is possible.
  • FIG. 7 is a system configuration diagram schematically showing another example of the power cutoff configuration of the refrigeration cycle apparatus 100B. Based on FIG. 7, another example of the power cutoff configuration of the refrigeration cycle apparatus 100B will be described.
  • FIG. 6 shows an example in which the leakage sensors 400 and 410 are connected to the outside of the indoor unit 60
  • FIG. 7 shows an example in which the leakage sensors 400 and 410 are connected to the inside of the indoor unit 60. Even with such a configuration, it is possible to ensure safety as in FIG.
  • the DC power supply device 200 and the AC power supply device 300 are connected to the indoor unit 60, but the DC power supply device 200 and the AC power supply device 300 may be connected to the outdoor unit 50.
  • the indoor unit 60 is supplied with DC power from the DC power supply device 200 and AC power from the AC power supply device 300 via the outdoor unit 50.
  • a high-voltage DC power supply (DC power supply apparatus 200) can be used as a primary power supply. That is, as the direct current for driving the inverter device used in the refrigeration cycle apparatus 100B, the supplied high direct-current voltage can be used as it is. Therefore, in the refrigeration cycle apparatus 100B, it is possible to significantly increase the efficiency of the system. This simplifies the configuration of the refrigeration cycle apparatus 100B and increases the efficiency of the refrigeration cycle apparatus 100B.
  • the leakage sensor 400 and the DC breaker 401 since the leakage sensor 400 and the DC breaker 401, the leakage sensor 410 and the AC breaker 411 are provided, even if at least one leakage of the DC power supply and the AC power supply occurs, It is possible to shut off the power supply of the machine, and to give sufficient consideration to safety.
  • FIG. FIG. 8 is a system configuration diagram schematically showing an example of a power shut-off configuration of the refrigeration cycle apparatus 100C according to Embodiment 4 of the present invention. Based on FIG. 8, an example of the power cutoff configuration of the refrigeration cycle apparatus 100 ⁇ / b> C will be described. Similar to refrigeration cycle apparatus 100 according to Embodiment 1, refrigeration cycle apparatus 100 ⁇ / b> C is configured to be able to operate by receiving power from a DC power supply. In addition, similarly to the refrigeration cycle apparatus 100B according to Embodiment 3, the refrigeration cycle apparatus 100C is configured to be able to operate by receiving power from not only a DC power supply but also an AC power supply. The configurations other than the power supply configuration and the power supply cutoff configuration from the AC power supply of the refrigeration cycle apparatus 100C are as described in the first embodiment.
  • each of the DC power supply device 200 and the AC power supply device 300 is connected to the indoor unit 60 has been described.
  • a DC power supply is provided to each of the indoor unit 60 and the outdoor unit 50.
  • An example in which the device 200 and the AC power supply device 300 are connected is shown.
  • a DC power supply device 200 and an AC power supply device 300 are connected to the outdoor unit 50 and the indoor unit 60, respectively.
  • the communication line 201 is branched to connect the DC power supply device 200 to each of the indoor unit 60 and the outdoor unit 50
  • the communication line 211 is branched to connect the AC power supply device 300 to the indoor unit 60 and the outdoor unit.
  • Each of the 50 is connected. That is, the DC power from the DC power supply device 200 and the AC power from the AC power supply device 300 are supplied to each of the indoor unit 60 and the outdoor unit 50.
  • a leakage sensor 400A and a DC circuit breaker 401A are connected between the DC power supply device 200 and the indoor unit 60.
  • a leakage sensor 400B and a DC circuit breaker 401B are connected between the DC power supply device 200 and the outdoor unit 50.
  • the leakage sensors 400A and 400B and the DC breakers 401A and 401B function as safety devices, thereby ensuring safety. .
  • earth leakage sensor 410A is connected between AC power supply apparatus 300 and indoor unit 60.
  • An AC circuit breaker 411A is connected to the upstream side of the leakage sensor 410A.
  • the leakage sensor 410 ⁇ / b> A detects leakage of the AC power supplied from the AC power supply device 300.
  • leakage signal 415A is output from leakage sensor 410A to AC breaker 411A.
  • AC breaker 411A receives leakage signal 415A output from leakage sensor 410A, AC breaker 411A interrupts the AC power supply.
  • a leakage sensor 410 ⁇ / b> B is connected between the AC power supply device 300 and the outdoor unit 50.
  • An AC circuit breaker 411B is connected to the upstream side of the leakage sensor 410B.
  • the leakage sensor 410B detects leakage of the AC power supplied from the AC power supply apparatus 300.
  • leakage signal 415B is output from leakage sensor 410B to AC circuit breaker 411B.
  • AC breaker 411B receives leakage signal 415B output from leakage sensor 410B, AC breaker 411B blocks the AC power supply.
  • the leakage sensors 410A and 410B and the AC circuit breakers 411A and 411B function as safety devices, thereby ensuring safety. It is possible to secure.
  • FIG. 9 is a system configuration diagram schematically illustrating another example of the power cutoff configuration of the refrigeration cycle apparatus 100C. Based on FIG. 9, another example of the power cutoff configuration of the refrigeration cycle apparatus 100C will be described.
  • FIG. 8 shows an example in which a leakage sensor for DC power supply leakage and a leakage sensor for AC power supply leakage are connected to each of the indoor unit 60 and the outdoor unit 50, but in FIG. 9, the indoor unit 60 and the outdoor unit 50 are connected to the indoor unit 60 and the outdoor unit 50.
  • the example which connected the earth leakage sensors 400 and 410 and the DC circuit breakers 401 and 411 so that common use is possible is shown.
  • the leakage sensor 400 and the DC circuit breaker 401 can be commonly used for the indoor unit 60 and the outdoor unit 50 by branching the communication line 201 on the downstream side of the leakage sensor 400.
  • the leakage sensor 410 and the AC circuit breaker 411 can be commonly used for the indoor unit 60 and the outdoor unit 50 by branching the communication line 211 on the downstream side of the leakage sensor 410. Even with such a configuration, it is possible to ensure safety as in FIG.
  • the earth leakage sensors 400 and 410 show the example in which the earth leakage sensors 400 and 410 are connected to the outside of the indoor unit 60 and the outdoor unit 50. However, the earth leakage sensors 400 and 410 may be connected to the inside of the indoor unit 60. Good.
  • a high-voltage DC power supply (DC power supply apparatus 200) can be used as a primary power supply. That is, as the direct current for driving the inverter device used in the refrigeration cycle apparatus 100C, the supplied high voltage direct voltage can be used as it is. Therefore, in the refrigeration cycle apparatus 100C, it is possible to significantly increase the efficiency of the system. This simplifies the configuration of the refrigeration cycle apparatus 100C and increases the efficiency of the refrigeration cycle apparatus 100C.
  • the leakage sensor 400 and the DC circuit breaker 401 since the leakage sensor 400 and the DC circuit breaker 401, the leakage sensor 410 and the AC circuit breaker 411 are provided, even if at least one leakage of the DC power supply and the AC power supply occurs, It is possible to shut off the power supply of the machine, and to give sufficient consideration to safety.
  • FIG. 10 is a system configuration diagram schematically showing an example of a power shut-off configuration of the refrigeration cycle apparatus 100D according to Embodiment 5 of the present invention. Based on FIG. 10, an example of the power cutoff configuration of the refrigeration cycle apparatus 100D will be described. Similar to the refrigeration cycle apparatus 100 according to Embodiment 1, the refrigeration cycle apparatus 100D is configured to be operable by receiving power from a DC power source. In addition, similarly to the refrigeration cycle apparatus 100B according to Embodiment 3, the refrigeration cycle apparatus 100D is configured to be able to operate by receiving power from not only a DC power supply but also an AC power supply. The configurations other than the power supply configuration and the power shut-off configuration from the AC power supply of the refrigeration cycle apparatus 100D are as described in the first embodiment.
  • the DC power supply device 200 and the AC power supply device 300 are connected to the indoor unit 60 and the outdoor unit 50, respectively, but in the fifth embodiment, the DC power supply device 200 is used as the power supply device. Only examples that can be used are shown.
  • a DC power supply device 200 is connected to the indoor unit 60.
  • devices electromagnetic valves (indoor electromagnetic valve 5, outdoor electromagnetic valve 6), pressure switch 9 and belt heater 1a, etc.) that are driven by an AC power supply.
  • a DC / AC converter device 500 that can convert a DC power source fed from the DC power source device 200 into an AC power source is connected between the DC power source device 200 and the indoor unit 60.
  • a UPS Uninterruptable Power Supply
  • the UPS is a device that can continue to supply power to a connected device for a certain period of time without power failure even when the power is not supplied.
  • the outdoor control device mounted on the outdoor unit 50 and the indoor control device mounted on the indoor unit 60 include a general-purpose CPU, a data bus, an input / output port, a nonvolatile memory, a timer, and the like. I want to avoid a situation where the power supply is not supplied because it has a control function. Therefore, it is preferable to connect the UPS to a communication line to which these control devices are connected so that power feeding can be continued.
  • the DC power from the DC power supply device 200 and the AC power from the DC / AC converter device 500 are fed to each of the outdoor unit 50 and the indoor unit 60, as in FIG. It has become so.
  • An earth leakage sensor 400 and a DC circuit breaker 401 are connected between the DC power supply device 200 and the indoor unit 60. Thereby, in the refrigeration cycle apparatus 100D, even when the DC power supply is leaked, the leakage sensor 400 and the DC circuit breaker 401 function as a safety device, thereby ensuring safety.
  • An earth leakage sensor 410 and an AC circuit breaker 411 are connected between the DC / AC converter device 500 and the indoor unit 60.
  • the leakage sensor 410 and the AC circuit breaker 411 function as a safety device to ensure safety. It is possible.
  • FIG. 11 is a system configuration diagram schematically illustrating another example of the power cutoff configuration of the refrigeration cycle apparatus 100D. Based on FIG. 11, another example of the power shut-off configuration of the refrigeration cycle apparatus 100D will be described.
  • FIG. 10 shows an example in which the leakage sensors 400 and 410 are connected to the outside of the indoor unit 60
  • FIG. 11 shows an example in which the leakage sensors 400 and 410 are connected to the inside of the indoor unit 60. Even with such a configuration, it is possible to ensure safety as in FIG.
  • the indoor unit 60 is supplied with DC power from the DC power supply device 200 and AC power from the DC / AC converter device 500 via the outdoor unit 50.
  • a high-voltage DC power supply (DC power supply apparatus 200) can be used as a primary power supply. That is, the supplied high-voltage DC voltage can be used as it is as the DC for driving the inverter device used in the refrigeration cycle apparatus 100D. Therefore, in the refrigeration cycle apparatus 100D, it is possible to greatly improve the efficiency of the system. Thereby, simplification of the configuration of the refrigeration cycle apparatus 100D and high efficiency of the refrigeration cycle apparatus 100D can be achieved.
  • the leakage sensor 400 and the DC breaker 401 since the leakage sensor 400 and the DC breaker 401, the leakage sensor 410 and the AC breaker 411 are provided, even if at least one leakage of the DC power supply and the AC power supply occurs, It is possible to shut off the power supply of the machine, and to give sufficient consideration to safety.
  • FIG. FIG. 12 is a system configuration diagram schematically showing an example of a power shut-off configuration of the refrigeration cycle apparatus 100E according to Embodiment 6 of the present invention. Based on FIG. 12, an example of the power cutoff structure of the refrigeration cycle apparatus 100E will be described. Similar to the refrigeration cycle apparatus 100 according to Embodiment 1, the refrigeration cycle apparatus 100E is configured to be able to operate by receiving power from a DC power supply. In addition, similarly to the refrigeration cycle apparatus 100B according to Embodiment 3, the refrigeration cycle apparatus 100E is configured to be able to operate by receiving power from not only a DC power supply but also an AC power supply. The configurations other than the power supply configuration and the power shut-off configuration from the AC power supply of the refrigeration cycle apparatus 100E are as described in the first embodiment.
  • a DC power supply device 200 and a DC / AC converter device 500 are connected to the indoor unit 60.
  • the DC / AC converter device 500 is connected to a communication line 201 branched from between the leakage sensor 400 and the indoor unit 60.
  • the leakage sensor 400 can detect the leakage state of the DC power supplied to the DC / AC converter device 500, and the leakage sensor 410 and the AC circuit breaker 411 can be omitted.
  • FIG. 13 is a system configuration diagram schematically illustrating another example of the power cutoff configuration of the refrigeration cycle apparatus 100E. Based on FIG. 13, another example of the power cutoff configuration of the refrigeration cycle apparatus 100E will be described.
  • FIG. 12 shows an example in which the leakage sensor 400 is connected to the outside of the indoor unit 60
  • FIG. 13 shows an example in which the leakage sensor 400 is connected to the inside of the indoor unit 60. Even with such a configuration, it is possible to ensure safety as in FIG.
  • the indoor unit 60 is supplied with DC power from the DC power supply device 200 and AC power from the DC / AC converter device 500 via the outdoor unit 50.
  • a high-voltage DC power supply (DC power supply apparatus 200) can be used as a primary power supply. That is, as the direct current for driving the inverter device used in the refrigeration cycle apparatus 100E, the supplied high direct-current voltage can be used as it is. Therefore, in the refrigeration cycle apparatus 100E, it becomes possible to significantly improve the efficiency of the system. Thereby, simplification of the configuration of the refrigeration cycle apparatus 100E and high efficiency of the refrigeration cycle apparatus 100E can be achieved.
  • the refrigeration cycle apparatus 100E since the earth leakage sensor 400 and the DC circuit breaker 401 are provided, even if the earth leakage of the DC power supply occurs, the DC power supply can be interrupted and the DC / AC converter apparatus 500 can be disconnected. The power supply can be cut off, and safety is fully considered.
  • FIG. FIG. 14 is a system configuration diagram schematically showing an example of a power shut-off configuration of the refrigeration cycle apparatus 100F according to Embodiment 7 of the present invention. Based on FIG. 14, an example of the power shutoff configuration of the refrigeration cycle apparatus 100F will be described. Similar to the refrigeration cycle apparatus 100 according to Embodiment 1, the refrigeration cycle apparatus 100F is configured to be operable by receiving power from a DC power source. In addition, similarly to the refrigeration cycle apparatus 100B according to Embodiment 3, the refrigeration cycle apparatus 100F is configured to be able to operate by receiving power from not only a DC power supply but also an AC power supply. The configurations other than the power supply configuration and the power cutoff configuration from the AC power supply of the refrigeration cycle apparatus 100F are as described in the first embodiment.
  • each of the indoor unit 60 and the outdoor unit 50 has a DC power supply.
  • An example in which the device 200 and the DC / AC converter device 500 are connected is shown.
  • the DC / AC converter device 500 connected to the indoor unit 60 is referred to as a DC / AC converter device 500A
  • the DC / AC converter device 500 connected to the outdoor unit 50 is referred to as a DC / AC converter device 500B. .
  • a DC power supply device 200 and a DC / AC converter device 500 are connected to the outdoor unit 50 and the indoor unit 60, respectively.
  • the communication line 201 is branched and the DC power supply device 200 and the DC / AC converter device 500A are connected to the indoor unit 60, and the DC power supply device 200 and the DC / AC converter device 500B are connected to the outdoor unit 50, respectively. ing.
  • the DC / AC converter device 500A is connected to a communication line 201 branched from between the leakage sensor 400A and the indoor unit 60.
  • the leakage sensor 400A can detect the leakage state of the DC power supplied to the DC / AC converter device 500A, and the leakage sensor 410 and the AC circuit breaker 411 can be omitted.
  • the DC / AC converter device 500B is connected to the communication line 201 branched from between the leakage sensor 400B and the outdoor unit 50.
  • the leakage sensor 400B can detect the leakage state of the DC power supplied to the DC / AC converter device 500B, and the leakage sensor 410 and the AC circuit breaker 411 can be omitted.
  • FIG. 15 is a system configuration diagram schematically showing another example of the power cutoff configuration of the refrigeration cycle apparatus 100F. Based on FIG. 15, another example of the power cutoff configuration of the refrigeration cycle apparatus 100F will be described.
  • FIG. 14 shows an example in which the earth leakage sensor 400, the DC circuit breaker 401, and the DC / AC converter device 500 are connected to the indoor unit 60 and the outdoor unit 50, respectively, but FIG. 15 shows the indoor unit 60 and the outdoor unit.
  • An example in which the earth leakage sensor 400, the DC circuit breaker 401, and the DC / AC converter device 500 are connected to the unit 50 so as to be commonly used is shown.
  • the leakage sensor 400 and the DC circuit breaker 401 can be commonly used for the indoor unit 60 and the outdoor unit 50 by branching the communication line 201 on the downstream side of the leakage sensor 400.
  • the DC / AC converter device 500 can be commonly used for the indoor unit 60 and the outdoor unit 50 by branching the communication line 201 on the downstream side of the DC / AC converter device 500. Even with such a configuration, it is possible to ensure safety as in FIG.
  • a high-voltage DC power supply (DC power supply apparatus 200) can be used as a primary power supply. That is, as the direct current for driving the inverter device used in the refrigeration cycle apparatus 100F, the supplied high direct-current voltage can be used as it is. Therefore, in the refrigeration cycle apparatus 100F, it is possible to significantly increase the efficiency of the system. This simplifies the configuration of the refrigeration cycle apparatus 100F and increases the efficiency of the refrigeration cycle apparatus 100F.
  • the leakage sensor 400 and the DC circuit breaker 401 are provided, even if the leakage of the DC power supply occurs, the DC power supply can be interrupted and the DC / AC converter apparatus 500 can be disconnected. The power supply can be cut off, and safety is fully considered.
  • FIG. FIG. 16 is a system configuration diagram schematically showing an example of a power shut-off configuration of the refrigeration cycle apparatus 100G according to Embodiment 8 of the present invention. Based on FIG. 16, an example of a power cutoff configuration of the refrigeration cycle apparatus 100G will be described. Similar to the refrigeration cycle apparatus 100 according to Embodiment 1, the refrigeration cycle apparatus 100G is configured to be able to operate by receiving power from a DC power supply. The configuration other than the power cutoff configuration of the refrigeration cycle apparatus 100G is as described in the first embodiment. In addition, the refrigeration cycle apparatus 100G is configured to receive power supplied from an AC power supply (AC power supply apparatus 300 or DC / AC converter apparatus 500).
  • AC power supply AC power supply apparatus 300 or DC / AC converter apparatus 500
  • the refrigeration cycle apparatus 100 ⁇ / b> G includes a leakage sensor 400, a DC circuit breaker 401, and a power supply controller 600.
  • a leakage sensor 400 In the above embodiment, an example in which the leakage signal 405 from the leakage sensor 400 is input to the DC circuit breaker 401 has been described. However, in the eighth embodiment, the leakage signal 405 from the leakage sensor 400 is It is input to the power supply controller 600.
  • the power controller 600 has a function of detecting a leakage level from the input leakage signal 405 and determining whether to turn off the DC circuit breaker 401 according to the level.
  • FIG. 17 is a table showing an example of determination criteria for the power supply controller 600.
  • FIG. 18 is a circuit configuration diagram schematically showing an example of the power supply configuration of the auxiliary equipment and the power equipment. Based on FIGS. 17 and 18, an example of determination of the power controller 600 and power shutdown will be described.
  • Auxiliary equipment is a general term for solenoid valves (indoor solenoid valve 5, outdoor solenoid valve 6), pressure switch 9, belt heater 1a, etc., and power equipment is compressor 1 and fan motor ( A generic term for the fan motor 7a and the fan motor 8a).
  • ⁇ is set for auxiliary equipment and ⁇ is set for power equipment according to the leakage section.
  • the power supply controller 600 cuts off the AC power supply, but does not cut off the DC power supply. That is, when the leakage level is ⁇ , the power controller 600 shuts down the DC / AC converter device 500 shown in FIG. 18 to stop the operation of the auxiliary equipment, but continues to drive the power equipment.
  • the power supply controller 600 cuts off the DC power supply. That is, when the leakage level is ⁇ , the power supply controller 600 stops the operation of both the auxiliary equipment and the power equipment as shown in FIG.
  • a high-voltage DC power supply (DC power supply apparatus 200) can be used as a primary power supply. That is, as the direct current for driving the inverter device used in the refrigeration cycle apparatus 100G, the supplied high direct-current voltage can be used as it is. Therefore, in the refrigeration cycle apparatus 100G, it becomes possible to significantly improve the efficiency of the system. This simplifies the configuration of the refrigeration cycle apparatus 100G and increases the efficiency of the refrigeration cycle apparatus 100G.
  • the refrigeration cycle apparatus 100G since the earth leakage sensor 400 and the DC circuit breaker 401 are provided, even if the earth leakage of the DC power supply occurs, the DC power supply can be interrupted and the safety is sufficiently taken into consideration. become. In addition, since it can be determined whether or not to cut off according to the leakage level, even if a leakage occurs, it is not necessary to stop all the devices at once, and a further increase in efficiency can be expected.
  • the refrigeration cycle apparatus according to the present invention has been described separately in the first to eighth embodiments.
  • the refrigeration cycle apparatus according to the present invention can be widely applied, for example, as a DC power supply apparatus 200 that is installed in an existing data center or the like. Can do. Moreover, you may make it comprise a refrigerating-cycle apparatus combining each embodiment suitably.

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

Abstract

L'invention concerne un dispositif à cycle frigorifique (100) pourvu de ce qui suit : un détecteur de fuite électrique (400) qui détecte une fuite de courant continu qui est fourni à partir d'un dispositif d'alimentation en courant continu (200) ; et un disjoncteur à courant continu (401), qui coupe le courant continu fourni par le dispositif d'alimentation en courant continu (200) à l'aide d'un signal envoyé par le détecteur de fuite électrique (400). Le détecteur de fuite électrique (400) et le disjoncteur à courant continu (401) sont disposés du côté aval du dispositif d'alimentation en courant continu (200).
PCT/JP2015/055636 2015-02-26 2015-02-26 Dispositif à cycle frigorifique WO2016135925A1 (fr)

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PCT/JP2015/055636 WO2016135925A1 (fr) 2015-02-26 2015-02-26 Dispositif à cycle frigorifique

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JP2020109343A (ja) * 2019-01-02 2020-07-16 ダイキン工業株式会社 空気調和機および遮断弁
CN114857740A (zh) * 2022-03-28 2022-08-05 青岛海尔空调器有限总公司 空调器控制方法、装置、电子设备、存储介质及空调器

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WO2018147047A1 (fr) * 2017-02-10 2018-08-16 本田技研工業株式会社 Système de commande, corps mobile et procédé de commande
CN110234531A (zh) * 2017-02-10 2019-09-13 本田技研工业株式会社 控制系统、移动体及控制方法
CN110234531B (zh) * 2017-02-10 2022-08-26 本田技研工业株式会社 控制系统、移动体及控制方法
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CN114857740B (zh) * 2022-03-28 2024-03-22 青岛海尔空调器有限总公司 空调器控制方法、装置、电子设备、存储介质及空调器

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