JPWO2021229766A5 - - Google Patents
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- JPWO2021229766A5 JPWO2021229766A5 JP2022522448A JP2022522448A JPWO2021229766A5 JP WO2021229766 A5 JPWO2021229766 A5 JP WO2021229766A5 JP 2022522448 A JP2022522448 A JP 2022522448A JP 2022522448 A JP2022522448 A JP 2022522448A JP WO2021229766 A5 JPWO2021229766 A5 JP WO2021229766A5
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- Prior art keywords
- refrigerant
- shortage detection
- pipe
- receiver
- detection circuit
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- 239000003507 refrigerant Substances 0.000 claims description 90
- 238000001514 detection method Methods 0.000 claims description 26
- 239000007788 liquid Substances 0.000 claims description 15
- 238000011156 evaluation Methods 0.000 claims description 9
- 230000006837 decompression Effects 0.000 claims description 6
- 238000005192 partition Methods 0.000 claims 3
- 230000008014 freezing Effects 0.000 claims 2
- 238000007710 freezing Methods 0.000 claims 2
- 238000010438 heat treatment Methods 0.000 claims 2
- 238000004781 supercooling Methods 0.000 claims 1
Description
本開示の冷凍装置は、冷媒回路と、冷媒不足検知回路と、制御装置とを備えている。冷媒回路は、冷媒を圧縮する少なくとも１つの圧縮機と、圧縮機から吐出された冷媒を凝縮させる凝縮器と、凝縮器から流出した冷媒が流入する受液器と、受液器から流出した冷媒を過冷却する過冷却熱交換器と、過冷却熱交換器において過冷却された冷媒を減圧する減圧装置と、減圧装置において減圧された冷媒を蒸発させる蒸発器と、蒸発器から流出した冷媒が流入するアキュムレータとを含んでいる。冷媒不足検知回路は、蒸発器と圧縮機との間の冷媒回路と受液器とに接続されている。冷媒不足検知回路は、受液器から流出した冷媒が流入するキャピラリチューブと、キャピラリチューブから流出した冷媒を加熱するヒータと、ヒータに流入する冷媒の入口温度を検知する入口温度センサと、ヒータから流出する冷媒の出口温度を検知する出口温度センサとを含んでいる。制御装置は、冷媒回路および冷媒不足検知回路を制御する。制御装置は、入口温度センサにより検知された冷媒の入口温度と出口温度センサにより検知された冷媒の出口温度とに基づいて評価値を算出し、算出した評価値に基づいて冷媒量が不足しているか否かを判定するように構成されている。受液器は、受液器に冷媒を流入させる流入配管と、受液器から冷媒を流出させる流出配管とを含んでいる。冷媒不足検知回路は、受液器に接続された冷媒不足検知用配管を含んでいる。冷媒不足検知用配管の第１流出口は、流入配管の流入口よりも下方に位置し、かつ流出配管の第２流出口よりも上方に位置している。 The refrigerating apparatus of the present disclosure includes a refrigerant circuit, a refrigerant shortage detection circuit, and a control device. The refrigerant circuit consists of at least one compressor that compresses the refrigerant, a condenser that condenses the refrigerant discharged from the compressor, a receiver into which the refrigerant flowing out of the condenser flows, and a refrigerant flowing out from the receiver. An overcooling heat exchanger that overcools, a decompression device that decompresses the overcooled refrigerant in the overcooling heat exchanger, an evaporator that evaporates the decompressed refrigerant in the decompression device, and a refrigerant that flows out from the evaporator. Includes an inflowing accumulator. The refrigerant shortage detection circuit is connected to the refrigerant circuit between the evaporator and the compressor and the liquid receiver. The refrigerant shortage detection circuit consists of a capillary tube into which the refrigerant flowing out of the receiver flows, a heater that heats the refrigerant flowing out of the capillary tube, an inlet temperature sensor that detects the inlet temperature of the refrigerant flowing into the heater, and a heater. It includes an outlet temperature sensor that detects the outlet temperature of the outflowing refrigerant. The control device controls the refrigerant circuit and the refrigerant shortage detection circuit. The control device calculates an evaluation value based on the inlet temperature of the refrigerant detected by the inlet temperature sensor and the outlet temperature of the refrigerant detected by the outlet temperature sensor, and the amount of the refrigerant is insufficient based on the calculated evaluation value. It is configured to determine whether or not it is present. The liquid receiver includes an inflow pipe that allows the refrigerant to flow into the liquid receiver and an outflow pipe that causes the refrigerant to flow out from the liquid receiver. The refrigerant shortage detection circuit includes a refrigerant shortage detection pipe connected to the receiver. The first outlet of the refrigerant shortage detection pipe is located below the inlet of the inflow pipe and above the second outlet of the outflow pipe.
Claims (15)
前記蒸発器と前記圧縮機との間の前記冷媒回路と前記受液器とに接続され、かつ前記受液器から流出した前記冷媒が流入するキャピラリチューブと、前記キャピラリチューブから流出した前記冷媒を加熱するヒータと、前記ヒータに流入する前記冷媒の入口温度を検知する入口温度センサと、前記ヒータから流出する前記冷媒の出口温度を検知する出口温度センサとを含む冷媒不足検知回路と、
前記冷媒回路および前記冷媒不足検知回路を制御する制御装置とを備え、
前記制御装置は、前記入口温度センサにより検知された前記冷媒の前記入口温度と前記出口温度センサにより検知された前記冷媒の前記出口温度とに基づいて評価値を算出し、算出した前記評価値に基づいて冷媒量が不足しているか否かを判定するように構成されており、
前記受液器は、前記受液器に前記冷媒を流入させる流入配管と、前記受液器から前記冷媒を流出させる流出配管とを含み、
前記冷媒不足検知回路は、前記受液器に接続された冷媒不足検知用配管を含み、
前記冷媒不足検知用配管の第１流出口は、前記流入配管の流入口よりも下方に位置し、かつ前記流出配管の第２流出口よりも上方に位置している、冷凍装置。 At least one compressor that compresses the refrigerant, a condenser that condenses the refrigerant discharged from the compressor, a receiver into which the refrigerant flowing out of the condenser flows, and a receiver flowing out of the liquid receiver. An overcooling heat exchanger that overcools the refrigerant, a decompression device that decompresses the refrigerant supercooled in the overcooling heat exchanger, an evaporator that evaporates the decompressed refrigerant in the decompression device, and the above. A refrigerant circuit including an accumulator into which the refrigerant flowing out of the evaporator flows in, and
A capillary tube connected to the refrigerant circuit between the evaporator and the compressor and the receiver and into which the refrigerant flowing out of the receiver flows, and the refrigerant flowing out of the capillary tube. A refrigerant shortage detection circuit including a heater for heating, an inlet temperature sensor for detecting the inlet temperature of the refrigerant flowing into the heater, and an outlet temperature sensor for detecting the outlet temperature of the refrigerant flowing out of the heater.
A control device for controlling the refrigerant circuit and the refrigerant shortage detection circuit is provided.
The control device calculates an evaluation value based on the inlet temperature of the refrigerant detected by the inlet temperature sensor and the outlet temperature of the refrigerant detected by the outlet temperature sensor, and uses the calculated evaluation value as the calculated value. It is configured to determine whether or not the amount of refrigerant is insufficient based on the above .
The liquid receiver includes an inflow pipe that allows the refrigerant to flow into the liquid receiver and an outflow pipe that causes the refrigerant to flow out from the liquid receiver.
The refrigerant shortage detection circuit includes a refrigerant shortage detection pipe connected to the liquid receiver.
A freezing device in which the first outlet of the refrigerant shortage detection pipe is located below the inlet of the inflow pipe and above the second outlet of the outflow pipe .
複数の前記圧縮機は、前記アキュムレータと前記凝縮器とに互いに並列に接続されている、請求項１～４のいずれか１項に記載の冷凍装置。 The refrigerant circuit includes the plurality of the compressors.
The refrigerating apparatus according to any one of claims 1 to 4, wherein the plurality of compressors are connected to the accumulator and the condenser in parallel with each other.
前記電磁弁は、前記受液器と前記キャピラリチューブとの間の前記冷媒不足検知回路に接続されている、請求項１～５のいずれか１項に記載の冷凍装置。 The refrigerant shortage detection circuit includes a solenoid valve that opens and closes the refrigerant shortage detection circuit.
The refrigerating device according to any one of claims 1 to 5, wherein the solenoid valve is connected to the refrigerant shortage detection circuit between the liquid receiver and the capillary tube.
前記蒸発器と前記圧縮機との間の前記冷媒回路と前記受液器とに接続され、かつ前記受液器から流出した前記冷媒が流入するキャピラリチューブと、前記キャピラリチューブから流出した前記冷媒を加熱するヒータと、前記ヒータに流入する前記冷媒の入口温度を検知する入口温度センサと、前記ヒータから流出する前記冷媒の出口温度を検知する出口温度センサとを含む冷媒不足検知回路と、
前記冷媒回路および前記冷媒不足検知回路を制御する制御装置とを備え、
前記制御装置は、前記入口温度センサにより検知された前記冷媒の前記入口温度と前記出口温度センサにより検知された前記冷媒の前記出口温度とに基づいて評価値を算出し、算出した前記評価値に基づいて冷媒量が不足しているか否かを判定するように構成されており、
前記冷媒不足検知回路は、前記冷媒不足検知回路を開閉する電磁弁を含み、
前記電磁弁は、前記キャピラリチューブと前記入口温度センサとの間の前記冷媒不足検知回路に接続されている、冷凍装置。 At least one compressor that compresses the refrigerant, a condenser that condenses the refrigerant discharged from the compressor, a receiver into which the refrigerant flowing out of the condenser flows, and a receiver flowing out of the liquid receiver. An overcooling heat exchanger that overcools the refrigerant, a decompression device that decompresses the refrigerant supercooled in the overcooling heat exchanger, an evaporator that evaporates the decompressed refrigerant in the decompression device, and the above. A refrigerant circuit including an accumulator into which the refrigerant flowing out of the evaporator flows in, and
A capillary tube connected to the refrigerant circuit between the evaporator and the compressor and the receiver and into which the refrigerant flowing out of the receiver flows, and the refrigerant flowing out of the capillary tube. A refrigerant shortage detection circuit including a heater for heating, an inlet temperature sensor for detecting the inlet temperature of the refrigerant flowing into the heater, and an outlet temperature sensor for detecting the outlet temperature of the refrigerant flowing out of the heater.
A control device for controlling the refrigerant circuit and the refrigerant shortage detection circuit is provided.
The control device calculates an evaluation value based on the inlet temperature of the refrigerant detected by the inlet temperature sensor and the outlet temperature of the refrigerant detected by the outlet temperature sensor, and uses the calculated evaluation value as the calculated value. It is configured to determine whether or not the amount of refrigerant is insufficient based on the above.
The refrigerant shortage detection circuit includes a solenoid valve that opens and closes the refrigerant shortage detection circuit.
The solenoid valve is a refrigerating device connected to the refrigerant shortage detection circuit between the capillary tube and the inlet temperature sensor.
前記制御装置は、前記冷媒量が不足していると判定された場合に前記情報出力装置に前記情報を出力させるように構成されている、請求項１～１０のいずれか１項に記載の冷凍装置。 Further equipped with an information output device for outputting information that the amount of the refrigerant is insufficient,
The freezing according to any one of claims 1 to 10, wherein the control device is configured to output the information to the information output device when it is determined that the amount of the refrigerant is insufficient. Device.
前記仕切り板の下端は、前記流出配管の前記第２流出口よりも下方に位置している、請求項１に記載の冷凍装置。 The liquid receiver includes a partition plate and contains a partition plate.
The refrigerating apparatus according to claim 1 , wherein the lower end of the partition plate is located below the second outlet of the outflow pipe.
前記第１容器は、前記均圧配管および前記接続配管により前記第２容器に接続されており、
前記均圧配管は、前記流入配管の前記流入口、前記冷媒不足検知用配管の前記第１流出口および前記流出配管の前記第２流出口よりも上方に位置しており、
前記接続配管は、前記流入配管の前記流入口よりも下方に位置している、請求項１に記載の冷凍装置。 The liquid receiver includes a first container to which the inflow pipe and the outflow pipe are connected, a second container to which the refrigerant shortage detection pipe is connected, a pressure equalizing pipe, and a connection pipe.
The first container is connected to the second container by the pressure equalizing pipe and the connecting pipe.
The pressure equalizing pipe is located above the inlet of the inflow pipe, the first outlet of the refrigerant shortage detection pipe, and the second outlet of the outflow pipe.
The refrigerating device according to claim 1 , wherein the connecting pipe is located below the inlet of the inflow pipe.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2020/019337 WO2021229766A1 (en) | 2020-05-14 | 2020-05-14 | Refrigerator |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JPWO2021229766A1 JPWO2021229766A1 (en) | 2021-11-18 |
| JPWO2021229766A5 true JPWO2021229766A5 (en) | 2022-06-30 |
| JP7393536B2 JP7393536B2 (en) | 2023-12-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2022522448A Active JP7393536B2 (en) | 2020-05-14 | 2020-05-14 | Refrigeration equipment |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7393536B2 (en) |
| WO (1) | WO2021229766A1 (en) |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63169461A (en) * | 1986-12-27 | 1988-07-13 | 三菱電機株式会社 | Air conditioner |
| JPH05346271A (en) * | 1992-06-15 | 1993-12-27 | Toshiba Corp | Control device for refrigerant heating type air conditioner |
| JP3240700B2 (en) * | 1992-08-26 | 2001-12-17 | 株式会社日立製作所 | Refrigeration cycle using non-azeotropic refrigerant mixture |
| JP3719246B2 (en) * | 2003-01-10 | 2005-11-24 | ダイキン工業株式会社 | Refrigeration apparatus and refrigerant amount detection method for refrigeration apparatus |
| JP2005282885A (en) * | 2004-03-29 | 2005-10-13 | Mitsubishi Heavy Ind Ltd | Air conditioner |
| JP2005308393A (en) * | 2005-07-25 | 2005-11-04 | Daikin Ind Ltd | Refrigerating machine and refrigerant amount detecting method of refrigerating machine |
| JP4462435B2 (en) * | 2005-11-16 | 2010-05-12 | 株式会社富士通ゼネラル | Refrigeration equipment |
| JP5582773B2 (en) * | 2009-12-10 | 2014-09-03 | 三菱重工業株式会社 | Air conditioner and refrigerant amount detection method for air conditioner |
| WO2013027232A1 (en) * | 2011-08-19 | 2013-02-28 | 三菱電機株式会社 | Refrigeration cycle device |
| JP6341808B2 (en) * | 2014-08-28 | 2018-06-13 | 三菱電機株式会社 | Refrigeration air conditioner |
| JP2018109452A (en) * | 2016-12-28 | 2018-07-12 | 三菱重工サーマルシステムズ株式会社 | Oil equalization control device, refrigerant circuit system, and oil equalization control method |
| JP2018119746A (en) * | 2017-01-26 | 2018-08-02 | 日立ジョンソンコントロールズ空調株式会社 | Refrigeration device |
| CN112739962B (en) * | 2018-09-28 | 2022-06-03 | 三菱电机株式会社 | Refrigeration cycle device |
| CN112823261B (en) * | 2018-10-17 | 2022-10-28 | 三菱电机株式会社 | Outdoor unit and refrigeration cycle device provided with same |
-
2020
- 2020-05-14 JP JP2022522448A patent/JP7393536B2/en active Active
- 2020-05-14 WO PCT/JP2020/019337 patent/WO2021229766A1/en active Application Filing
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