JPH0220916B2 - - Google Patents
Info
- Publication number
- JPH0220916B2 JPH0220916B2 JP59039330A JP3933084A JPH0220916B2 JP H0220916 B2 JPH0220916 B2 JP H0220916B2 JP 59039330 A JP59039330 A JP 59039330A JP 3933084 A JP3933084 A JP 3933084A JP H0220916 B2 JPH0220916 B2 JP H0220916B2
- Authority
- JP
- Japan
- Prior art keywords
- line
- cooling water
- cooling
- condenser
- defrosting
- 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.)
- Expired - Lifetime
Links
- 239000000498 cooling water Substances 0.000 claims description 21
- 238000001816 cooling Methods 0.000 claims description 20
- 238000010257 thawing Methods 0.000 claims description 13
- 239000003507 refrigerant Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 3
- 230000008016 vaporization Effects 0.000 claims 1
- 238000009834 vaporization Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Defrosting Systems (AREA)
Description
【発明の詳細な説明】
本発明は、水冷式冷却システムにおいて、冷却
運転中は凝縮圧をできるだけ制御せずに低圧で運
転するが、ホツトガスデフロスト時には冷却塔か
ら凝縮器への冷却水の水量を小ならしめるように
制御することにより高圧側を高圧に維持し、デフ
ロストを効果的に行えるようにした冷却システム
における除霜時の冷却水制御装置に関し、以下実
施例図に基いて本発明を説明する。Detailed Description of the Invention The present invention provides a water-cooled cooling system in which the condensing pressure is not controlled as much as possible during cooling operation and is operated at a low pressure, but during hot gas defrosting, the amount of cooling water from the cooling tower to the condenser is reduced. Regarding a cooling water control device for defrosting in a cooling system that maintains the high pressure side at a high pressure by controlling to reduce the amount of water and defrost effectively, the present invention will be described below based on the embodiment diagrams. explain.
冷却運転時には、圧縮機１からの冷媒は凝縮器
２を経て液ライン３の開閉弁V1、膨張弁EVから
冷却器４のコイル５へ供給され、同コイル５から
の冷媒蒸気は復流ライン６、サクシヨン電磁弁
V2、ライン７、切換弁V3、ライン８、吸入ライ
ン９を経て圧縮機１へ吸入される。 During cooling operation, the refrigerant from the compressor 1 is supplied to the coil 5 of the cooler 4 via the condenser 2, the on-off valve V 1 of the liquid line 3, and the expansion valve EV, and the refrigerant vapor from the coil 5 is supplied to the return flow line. 6. Suction solenoid valve
It is sucked into the compressor 1 via V 2 , line 7 , switching valve V 3 , line 8 , and suction line 9 .
また、凝縮器２へは、冷却塔１０からの冷却水
が送水ライン１１から送られ、冷媒を凝縮せしめ
た冷却水は復水ライン１２からデフロスト用熱交
換器１３を経て冷却塔１０に戻る。 Further, the cooling water from the cooling tower 10 is sent to the condenser 2 from the water supply line 11, and the cooling water that has condensed the refrigerant returns to the cooling tower 10 from the condensate line 12 via the defrosting heat exchanger 13.
ホツトガスによる除霜時には、圧縮機からのホ
ツトガスはホツトガスライン１４の開となつた除
霜時用電磁弁V4を通り、冷却器４におけるドレ
ンパン１５のコイル１６を経てホツトガス押込み
１７から冷却器のコイル５へ供給され（除霜時に
は切換弁V1は閉に切り換えられる）、同コイルか
らの放熱した冷媒は復流ライン６、前記サクシヨ
ン電磁弁V2を避けるバイパスライン１８、熱交
換器１３、戻りライン１９、吸入ライン９を経て
圧縮機に吸入される。 When defrosting with hot gas, the hot gas from the compressor passes through the defrost solenoid valve V 4 which is opened in the hot gas line 14, passes through the coil 16 of the drain pan 15 in the cooler 4, and is transferred from the hot gas inlet 17 to the cooler. The refrigerant is supplied to the coil 5 (the switching valve V 1 is closed during defrosting), and the heat radiated from the coil is passed through a return flow line 6 , a bypass line 18 that avoids the suction solenoid valve V 2 , a heat exchanger 13 , The air is sucked into the compressor via the return line 19 and suction line 9.
このような冷却システムにおいて、本発明は冷
却塔１０から凝縮器２への冷却水送水ライン１１
の適所と凝縮器からデフロスト熱交換器１３に至
る冷却水復水ライン１２の適所との間に冷却水バ
イパスライン２０を配設して、同バイパスライン
２０に、冷却運転時には閉止しているが除霜運転
時には開となる冷却水バイパス弁V5を設けたも
のとしてある。 In such a cooling system, the present invention provides a cooling water supply line 11 from the cooling tower 10 to the condenser 2.
A cooling water bypass line 20 is disposed between a suitable position in the cooling water condensate line 12 extending from the condenser to the defrost heat exchanger 13, and a cooling water bypass line 20 is provided in the bypass line 20, which is closed during cooling operation. A cooling water bypass valve V5 that is opened during defrosting operation is provided.
上述した実施例のものでは、冷却運転は前述し
たごとくに行われ、凝縮圧は低圧で、効率的な冷
却運転が行われる。 In the embodiment described above, the cooling operation is performed as described above, and the condensing pressure is low, so that efficient cooling operation is performed.
除霜運転時には前記冷却水のバイパス弁V5が
開成され、冷却塔１０からの冷却水の一部はデフ
ロスト用熱交換器１３へ分流されて、凝縮器２へ
の冷却水供給量は減少に制御される。 During defrosting operation, the cooling water bypass valve V 5 is opened, a part of the cooling water from the cooling tower 10 is diverted to the defrosting heat exchanger 13, and the amount of cooling water supplied to the condenser 2 is reduced. controlled.
したがつて凝縮圧は、冷却塔からの冷却水が
100パーセント凝縮器へ供給される従来の場合よ
りも高圧に保持され、冷却器へは高圧のホツトガ
スを供給できて、ホツトガスデフロストを効率よ
く行うことができる。 Therefore, the condensing pressure is determined by the cooling water from the cooling tower.
The pressure is maintained at a higher pressure than in the conventional case where the hot gas is supplied to a 100% condenser, and high-pressure hot gas can be supplied to the cooler, making it possible to efficiently defrost the hot gas.
図は本発明に係る装置の一例を備える冷却シス
テム図である。
図中、１……圧縮機、２……凝縮器、３……液
ライン、４……冷却器、５……コイル、６……復
流ライン、７，８……戻りライン、９……吸入ラ
イン、１０……冷却塔、１１……送水ライン、１
２……復水ライン、１３……デフロスト用熱交換
器、１４……ホツトガスライン、１７……ホツト
ガス押込みライン、１５……ドレンパン、１６…
…ドレンパンのコイル、１８……バイパスライ
ン、１９……戻りライン、２０……冷却水バイパ
スライン、V1……開閉弁、V2……サクシヨン電
磁弁、V3……切換弁、V4……除霜時電磁弁、V5
……冷却水バイパス弁、EV……膨張弁。
The figure is a diagram of a cooling system including an example of a device according to the present invention. In the figure, 1... Compressor, 2... Condenser, 3... Liquid line, 4... Cooler, 5... Coil, 6... Return flow line, 7, 8... Return line, 9... Suction line, 10... Cooling tower, 11... Water supply line, 1
2... Condensate line, 13... Defrost heat exchanger, 14... Hot gas line, 17... Hot gas push line, 15... Drain pan, 16...
... Drain pan coil, 18 ... Bypass line, 19 ... Return line, 20 ... Cooling water bypass line, V 1 ... Opening/closing valve, V 2 ... Suction solenoid valve, V 3 ... Switching valve, V 4 ... …Defrosting solenoid valve, V 5
...cooling water bypass valve, EV...expansion valve.
Claims (1)
の除霜は圧縮機からのホツトガスで行い、凝縮器
には冷却塔からの冷却水が供給されて冷媒が凝縮
され、除霜後の冷媒液の気化は、凝縮器からの冷
却水を利用する除霜用熱交換器で行う水冷式冷却
システムにおいて、冷却塔から凝縮器への冷却水
送水ラインと凝縮器から冷却塔への途中に除霜用
熱交換器を有する冷却水復水ラインとの間に冷却
水のバイパスラインを設けて、このバイパスライ
ンに、冷却運転時には閉止しているが除霜運転時
は開となる冷却水用バイパス弁を設けたことを特
徴とする冷却システムにおける除霜時の冷却水制
御装置。1 Equipped with a compressor, a condenser, and a cooler, the cooler is defrosted using hot gas from the compressor, and the condenser is supplied with cooling water from the cooling tower to condense the refrigerant. In a water-cooled cooling system, vaporization of the refrigerant liquid is carried out using a defrosting heat exchanger that uses cooling water from the condenser. A cooling water bypass line is provided between the cooling water condensate line that has a defrosting heat exchanger, and this bypass line has a cooling water line that is closed during cooling operation but is opened during defrosting operation. A cooling water control device during defrosting in a cooling system, characterized by being provided with a bypass valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3933084A JPS60185068A (en) | 1984-02-29 | 1984-02-29 | Controller for cooling water on defrostation in cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3933084A JPS60185068A (en) | 1984-02-29 | 1984-02-29 | Controller for cooling water on defrostation in cooling system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60185068A JPS60185068A (en) | 1985-09-20 |
| JPH0220916B2 true JPH0220916B2 (en) | 1990-05-11 |
Family
ID=12550083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3933084A Granted JPS60185068A (en) | 1984-02-29 | 1984-02-29 | Controller for cooling water on defrostation in cooling system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60185068A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2513164Y2 (en) * | 1992-12-10 | 1996-10-02 | 株式会社東洋製作所 | Cooling system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4929483U (en) * | 1972-06-19 | 1974-03-13 |
-
1984
- 1984-02-29 JP JP3933084A patent/JPS60185068A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4929483U (en) * | 1972-06-19 | 1974-03-13 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60185068A (en) | 1985-09-20 |
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