JPH0191855U - - Google Patents
Info
- Publication number
- JPH0191855U JPH0191855U JP18581987U JP18581987U JPH0191855U JP H0191855 U JPH0191855 U JP H0191855U JP 18581987 U JP18581987 U JP 18581987U JP 18581987 U JP18581987 U JP 18581987U JP H0191855 U JPH0191855 U JP H0191855U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- evaporator
- electric valve
- liquid pipe
- electric
- 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
- 239000007788 liquid Substances 0.000 claims description 6
- 238000005057 refrigeration Methods 0.000 claims description 5
- 239000003507 refrigerant Substances 0.000 claims 6
- 238000001816 cooling Methods 0.000 claims 4
- 230000009977 dual effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Description
図は本考案の実施例に係る冷凍装置の図表を付
記してなる装置回路図である。
１…圧縮機、２…凝縮器、３Ａ…第１電動弁、
３Ｂ…第２電動弁、４Ａ…第１蒸発器、４Ｂ…第
２蒸発器、５Ａ…第１液管、５Ｂ…第２液管、６
Ａ…第３電動弁、６Ｂ…第４電動弁。
The figure is a circuit diagram of a refrigeration system according to an embodiment of the present invention, with a diagram attached thereto. 1... Compressor, 2... Condenser, 3A... First electric valve,
3B...Second electric valve, 4A...First evaporator, 4B...Second evaporator, 5A...First liquid pipe, 5B...Second liquid pipe, 6
A...Third motorized valve, 6B...Fourth motorized valve.
Claims (1)
側冷媒回路を機械室側に設け、冷却運転時に弁開
度を調節し開弁させる第１電動弁３Ａと第１蒸発
器４Ａとを第１液管５Ａにより直列に接続した第
１利用側冷媒回路ならびに冷却運転時に弁開度を
調節し開弁させる第２電動弁３Ｂと第２蒸発器４
Ｂとを第２液管５Ｂにより直列に接続した第２利
用側冷媒回路を冷凍負荷室側に設けて、第１、２
両利用側冷媒回路の各電動弁３Ａ，３Ｂ入口側を
前記熱源側冷媒回路の凝縮器２出口側に、各蒸発
器４Ａ，４Ｂ出口側を圧縮機１吸入側に夫々接続
し、一方、第１蒸発器４Ａの低負荷冷却運転時及
びデフロスト運転時に弁開度調節し開弁させる第
３電動弁６Ａと第２蒸発器４Ｂの低負荷冷却運転
時及びデフロスト運転時に弁開度調節し開弁させ
る第４電動弁６Ｂとを冷凍負荷室側に設けて、こ
の両電動弁６Ａ，６Ｂの入口側を圧縮機１の吐出
ラインに、出口側を第３電動弁６Ａは第１液管５
Ａに第４電動弁６Ｂは第２液管５Ｂに夫々接続し
てなることを特徴とする冷凍装置。 ２ 第３電動弁６Ａと第４電動弁６Ｂとが、夫々
直列関係をなす第１蒸発器４Ａと第２蒸発器４Ｂ
とにおける出入口冷媒温度差に対応して弁開度調
節される実用新案登録請求の範囲第１項記載の冷
凍装置。[Claims for Utility Model Registration] 1. A first motor-operated valve 3A that has a heat source side refrigerant circuit in which a compressor 1 and a condenser 2 are connected in series and that is provided in the machine room side and that opens the valve by adjusting the valve opening degree during cooling operation. and a first evaporator 4A are connected in series by a first liquid pipe 5A, and a second electric valve 3B and a second evaporator 4 that adjust the valve opening degree and open the valve during cooling operation.
A second usage-side refrigerant circuit in which B and B are connected in series by a second liquid pipe 5B is provided on the refrigeration load chamber side, and the first and second refrigerant circuits are
The inlet side of each electric valve 3A, 3B of the refrigerant circuit on the dual use side is connected to the outlet side of the condenser 2 of the refrigerant circuit on the heat source side, and the outlet side of each evaporator 4A, 4B is connected to the suction side of the compressor 1, respectively. The valve opening is adjusted and opened during low-load cooling operation and defrost operation of the first evaporator 4A.The third motor-operated valve 6A is adjusted and opened during low-load cooling operation and defrost operation of the second evaporator 4B. A fourth electric valve 6B is provided on the refrigeration load chamber side, and the inlet sides of both electric valves 6A and 6B are connected to the discharge line of the compressor 1, and the outlet sides of the third electric valve 6A are connected to the first liquid pipe 5.
A refrigeration system characterized in that the fourth electric valve 6B is connected to the second liquid pipe 5B, respectively. 2 The third electric valve 6A and the fourth electric valve 6B form a first evaporator 4A and a second evaporator 4B in a series relationship, respectively.
The refrigeration system according to claim 1, wherein the valve opening degree is adjusted in response to the temperature difference between the inlet and outlet refrigerant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18581987U JPH0191855U (en) | 1987-12-04 | 1987-12-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18581987U JPH0191855U (en) | 1987-12-04 | 1987-12-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0191855U true JPH0191855U (en) | 1989-06-16 |
Family
ID=31477081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18581987U Pending JPH0191855U (en) | 1987-12-04 | 1987-12-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0191855U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010234945A (en) * | 2009-03-31 | 2010-10-21 | Hitachi Ltd | Heat pump air conditioner for railway vehicles |
| JP2015148409A (en) * | 2014-02-07 | 2015-08-20 | 三菱電機株式会社 | Heat exchange unit for direct expansion cooler of refrigeration air conditioner |
-
1987
- 1987-12-04 JP JP18581987U patent/JPH0191855U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010234945A (en) * | 2009-03-31 | 2010-10-21 | Hitachi Ltd | Heat pump air conditioner for railway vehicles |
| JP2015148409A (en) * | 2014-02-07 | 2015-08-20 | 三菱電機株式会社 | Heat exchange unit for direct expansion cooler of refrigeration air conditioner |
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