JPH02114872U - - Google Patents
Info
- Publication number
- JPH02114872U JPH02114872U JP1951089U JP1951089U JPH02114872U JP H02114872 U JPH02114872 U JP H02114872U JP 1951089 U JP1951089 U JP 1951089U JP 1951089 U JP1951089 U JP 1951089U JP H02114872 U JPH02114872 U JP H02114872U
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- pressure
- evaporator
- heat pump
- expansion valve
- 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.)
- Pending
Links
- 239000003507 refrigerant Substances 0.000 claims description 15
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Air-Conditioning For Vehicles (AREA)
Description
第１図は本考案の１実施例を示す冷媒回路図、
第２図は本考案の他の実施例を示す冷媒回路図、
第３図は圧縮機の回転数に対応する定圧自動制御
弁の開度、パイパス冷媒流量及び圧縮機吸入圧力
の変化を示す線図である。第４図は従来の冷媒圧
縮式ヒートポンプの冷媒回路図である。
冷媒圧縮機……１、凝縮器……２、蒸発器……
３、膨張弁……４、定圧自動制御弁……６。
FIG. 1 is a refrigerant circuit diagram showing one embodiment of the present invention;
FIG. 2 is a refrigerant circuit diagram showing another embodiment of the present invention;
FIG. 3 is a diagram showing changes in the opening degree of the constant pressure automatic control valve, bypass refrigerant flow rate, and compressor suction pressure in response to the rotation speed of the compressor. FIG. 4 is a refrigerant circuit diagram of a conventional refrigerant compression type heat pump. Refrigerant compressor...1, condenser...2, evaporator...
3. Expansion valve...4. Constant pressure automatic control valve...6.
Claims (1)
出口の冷媒過熱度を制御する膨張弁を備えた冷媒
圧縮式ヒートポンプにおいて、上記蒸発器の入口
の冷媒圧力を検知してこれが設定圧力以下に低下
すると開き始めこの冷媒圧力の低下に対応して開
度が次第に増大する定圧自動制御弁を上記膨張弁
に対して並列に冷媒回路に組み込んだことを特徴
とする冷媒圧縮式ヒートポンプ。 In a refrigerant compression heat pump equipped with a refrigerant compressor, a condenser, an evaporator, and an expansion valve that controls the degree of superheating of the refrigerant at the outlet of the evaporator, the refrigerant pressure at the inlet of the evaporator is detected and the refrigerant pressure is lowered to below a set pressure. A refrigerant compression type heat pump characterized in that a constant pressure automatic control valve that begins to open when the refrigerant pressure decreases and whose opening degree gradually increases in response to the decrease in refrigerant pressure is incorporated in the refrigerant circuit in parallel with the expansion valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1951089U JPH02114872U (en) | 1989-02-23 | 1989-02-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1951089U JPH02114872U (en) | 1989-02-23 | 1989-02-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02114872U true JPH02114872U (en) | 1990-09-13 |
Family
ID=31235083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1951089U Pending JPH02114872U (en) | 1989-02-23 | 1989-02-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02114872U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56117054A (en) * | 1980-02-18 | 1981-09-14 | Fuji Koki Mfg | Cooling device |
| JPS63187062A (en) * | 1987-01-30 | 1988-08-02 | 株式会社日立製作所 | Refrigeration cycle |
-
1989
- 1989-02-23 JP JP1951089U patent/JPH02114872U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56117054A (en) * | 1980-02-18 | 1981-09-14 | Fuji Koki Mfg | Cooling device |
| JPS63187062A (en) * | 1987-01-30 | 1988-08-02 | 株式会社日立製作所 | Refrigeration cycle |
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