JPH01136865U - - Google Patents
Info
- Publication number
- JPH01136865U JPH01136865U JP2495688U JP2495688U JPH01136865U JP H01136865 U JPH01136865 U JP H01136865U JP 2495688 U JP2495688 U JP 2495688U JP 2495688 U JP2495688 U JP 2495688U JP H01136865 U JPH01136865 U JP H01136865U
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- control valve
- temperature
- way switching
- cycle operation
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
- 239000003507 refrigerant Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims 4
- 238000010257 thawing Methods 0.000 claims 3
- 238000001514 detection method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 1
Description
第１図は本考案の一実施例を示す図、第２図は
第１図を説明するための図、第３図は従来例を示
す図である。
１……エンジン、２……駆動力伝達装置、３…
…冷媒圧縮機、４……四方切換弁、５……庫外熱
交換器、６……庫内熱交換器、７，９……逆止弁
、８，１０……膨脹弁、２１，２２……温度セン
サ、３１，３２……電磁弁、４１……キヤピラリ
ー。
FIG. 1 is a diagram showing an embodiment of the present invention, FIG. 2 is a diagram for explaining FIG. 1, and FIG. 3 is a diagram showing a conventional example. 1... Engine, 2... Drive force transmission device, 3...
... Refrigerant compressor, 4 ... Four-way switching valve, 5 ... External heat exchanger, 6 ... Internal heat exchanger, 7, 9 ... Check valve, 8, 10 ... Expansion valve, 21, 22 ... Temperature sensor, 31, 32 ... Solenoid valve, 41 ... Capillary.
Claims (1)
される圧縮機の吐出冷媒が、四方切換弁、庫外熱
交換器、第１の膨脹手段、庫内熱交換器、及び上
記四方切換弁を介して上記圧縮機の冷媒吸入口に
戻り、除霜サイクル運転時には上記圧縮機の吐出
冷媒が、上記四方切換弁、上記庫内熱交換器、第
２の膨脹手段、上記庫外熱交換器、及び上記四方
切換弁を介して上記圧縮機の冷媒吸入口に戻るよ
うに構成され、上記第１及び第２の膨脹手段との
間に除霜手段が配設されているヒートポンプ式冷
却装置において、上記圧縮機の吐出冷媒の温度を
検出する為の温度検出手段と、上記庫外熱交換器
をバイパスする第１のバイパス路と、上記庫内熱
交換器をバイパスする第２のバイパスとを有し、
上記第１のバイパス路には第１の制御弁及び第３
の膨脹手段が備えられ、上記第２のバイパス路に
は第２の制御弁のみが備えられており、上記冷却
サイクル運転時に、上記温度検出手段で検出され
た検出温度に基づいて上記第２の制御弁の開閉を
制御し、上記除霜サイクル運転時に、上記温度検
出手段で検出された検出温度に基づいて上記第１
の制御弁の開閉を制御するようにしたことを特徴
とするヒートポンプ式冷却装置。 During cooling cycle operation, the refrigerant discharged from the compressor driven by the engine is compressed through the four-way switching valve, the external heat exchanger, the first expansion means, the internal heat exchanger, and the four-way switching valve. During the defrosting cycle operation, the refrigerant discharged from the compressor is transferred to the four-way switching valve, the internal heat exchanger, the second expansion means, the external heat exchanger, and the four-way switching valve. In a heat pump cooling device configured to return to the refrigerant suction port of the compressor via a valve, and in which a defrosting means is disposed between the first and second expansion means, It has a temperature detection means for detecting the temperature of the discharged refrigerant, a first bypass path that bypasses the external heat exchanger, and a second bypass path that bypasses the internal heat exchanger,
The first bypass path includes a first control valve and a third control valve.
The second bypass passage is provided with only a second control valve, and during the cooling cycle operation, the temperature of the second The opening/closing of the control valve is controlled, and the first temperature is controlled based on the detected temperature detected by the temperature detection means during the defrosting cycle operation.
A heat pump type cooling device characterized by controlling the opening and closing of a control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2495688U JPH065571Y2 (en) | 1988-02-29 | 1988-02-29 | Heat pump cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2495688U JPH065571Y2 (en) | 1988-02-29 | 1988-02-29 | Heat pump cooling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01136865U true JPH01136865U (en) | 1989-09-19 |
| JPH065571Y2 JPH065571Y2 (en) | 1994-02-09 |
Family
ID=31245253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2495688U Expired - Lifetime JPH065571Y2 (en) | 1988-02-29 | 1988-02-29 | Heat pump cooling device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH065571Y2 (en) |
-
1988
- 1988-02-29 JP JP2495688U patent/JPH065571Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH065571Y2 (en) | 1994-02-09 |
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