JPH0423966U - - Google Patents
Info
- Publication number
- JPH0423966U JPH0423966U JP6366590U JP6366590U JPH0423966U JP H0423966 U JPH0423966 U JP H0423966U JP 6366590 U JP6366590 U JP 6366590U JP 6366590 U JP6366590 U JP 6366590U JP H0423966 U JPH0423966 U JP H0423966U
- Authority
- JP
- Japan
- Prior art keywords
- opening
- compressor
- closing
- electronic expansion
- bypass circuit
- 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
- 238000005057 refrigeration Methods 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 3
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Description
第１図は本考案の実施例１にかかる冷凍装置の
冷媒回路図、第２図は第１図図示の冷凍装置にお
ける均圧制御時の作用を説明するためのタイムチ
ヤート、第３図は本考案の実施例２にかかる冷凍
装置の冷媒回路図、第４図は第３図図示の冷凍装
置における均圧制御時の作用を説明するためのタ
イムチヤート、第５図は本考案の実施例３にかか
る冷凍装置の冷媒回路図である。
１……圧縮機、２……四路切換弁、３……熱源
側熱交換器、４……第１電子膨張弁、５……レシ
ーバ、６……第２電子膨張弁、７……利用側熱交
換器、９……バイパス路、１０……開閉手段（電
磁開閉弁）、１２……制御手段、１４……高圧検
出手段（サーミスタ）、１５……低圧検出手段（
圧力センサー）、１６……制御手段、１７……均
圧回路、１８……開閉手段（電磁開閉弁）、２０
……制御手段。
Fig. 1 is a refrigerant circuit diagram of a refrigeration system according to Embodiment 1 of the present invention, Fig. 2 is a time chart for explaining the operation during pressure equalization control in the refrigeration system shown in Fig. 1, and Fig. 3 is a diagram of the present invention. Embodiment 2 of the invention A refrigerant circuit diagram of a refrigeration system according to the second embodiment, FIG. 4 is a time chart for explaining the operation during pressure equalization control in the refrigeration system shown in FIG. 3, and FIG. FIG. 3 is a refrigerant circuit diagram of the refrigeration apparatus according to the present invention. 1... Compressor, 2... Four-way switching valve, 3... Heat source side heat exchanger, 4... First electronic expansion valve, 5... Receiver, 6... Second electronic expansion valve, 7... Utilization Side heat exchanger, 9... Bypass path, 10... Opening/closing means (electromagnetic on/off valve), 12... Control means, 14... High pressure detection means (thermistor), 15... Low pressure detection means (
pressure sensor), 16... control means, 17... pressure equalization circuit, 18... opening/closing means (electromagnetic opening/closing valve), 20
...control means.
Claims (1)
、第１電子膨張弁４、レシーバ５、第２電子膨張
弁６および利用側熱交換器７を備え、前記圧縮機
１の吐出側と吸入側とを短絡するバイパス回路９
と該バイパス回路９を開閉する開閉手段１０とを
付設してなる冷凍装置において、前記圧縮機１の
運転停止後における所定時間と再起動前における
所定時間前記開閉手段１０を開状態とする如く作
用する制御手段１２を付設したことを特徴とする
冷凍装置。 ２ 圧縮機１、四路切換弁２、熱源側熱交換器３
、第１電子膨張弁４、レシーバ５、第２電子膨張
弁６および利用側熱交換器７を備え、前記圧縮機
１の吐出側と吸入側とを短絡するバイパス回路９
と該バイパス回路９を開閉する開閉手段１０とを
付設してなる冷凍装置において、前記両電子膨張
弁４，６間の液ラインにおける高圧を検出する高
圧検出手段１４と、前記圧縮機１の吸入側の低圧
を検出する低圧検出手段１５と、前記圧縮機１の
運転停止後において前記高圧検出手段１４により
検出された検出値と前記低圧検出手段１５により
検出された検出値とが均圧するまでの間前記開閉
手段１０を開状態とする如く作用する制御手段１
６とを付設したことを特徴とする冷凍装置。 ３ 圧縮機１、四路切換弁２、熱源側熱交換器３
、第１電子膨張弁４、レシーバ５、第２電子膨張
弁６および利用側熱交換器７を備え、前記圧縮機
１の吐出側と吸入側とを短絡するバイパス回路９
と該バイパス回路９を開閉する開閉手段１０とを
付設してなる冷凍装置において、前記レシーバ５
の気相部と前記圧縮機１の吸入側とを接続する均
圧回路１７と、該均圧回路１７を開閉する開閉手
段１８と、前記圧縮機１の運転停止後において前
記両開閉手段１０，１８を同時に所定時間開状態
とする如く作用する制御手段２０とを付設したこ
とを特徴とする冷凍装置。[Scope of claims for utility model registration] 1 Compressor 1, four-way switching valve 2, heat source side heat exchanger 3
, a bypass circuit 9 that includes a first electronic expansion valve 4, a receiver 5, a second electronic expansion valve 6, and a utilization side heat exchanger 7, and short-circuits the discharge side and suction side of the compressor 1.
and an opening/closing means 10 for opening and closing the bypass circuit 9, the opening/closing means 10 operates to be open for a predetermined time after the compressor 1 is stopped and for a predetermined time before restarting. A refrigeration system characterized in that a control means 12 is attached to control the refrigeration system. 2 Compressor 1, four-way switching valve 2, heat source side heat exchanger 3
, a bypass circuit 9 that includes a first electronic expansion valve 4, a receiver 5, a second electronic expansion valve 6, and a utilization side heat exchanger 7, and short-circuits the discharge side and suction side of the compressor 1.
and an opening/closing means 10 for opening and closing the bypass circuit 9, a high pressure detection means 14 for detecting high pressure in the liquid line between the two electronic expansion valves 4 and 6, and a suction means 10 for opening and closing the bypass circuit 9. The low pressure detection means 15 detects the low pressure on the side, and the detection value detected by the high pressure detection means 14 and the detection value detected by the low pressure detection means 15 are equalized after the compressor 1 stops operating. Control means 1 which acts to open the opening/closing means 10 during
6. A refrigeration device characterized by being attached with 6. 3 Compressor 1, four-way switching valve 2, heat source side heat exchanger 3
, a bypass circuit 9 that includes a first electronic expansion valve 4, a receiver 5, a second electronic expansion valve 6, and a utilization side heat exchanger 7, and short-circuits the discharge side and suction side of the compressor 1.
and an opening/closing means 10 for opening and closing the bypass circuit 9.
a pressure equalizing circuit 17 connecting the gas phase part of the compressor 1 to the suction side of the compressor 1; an opening/closing means 18 for opening and closing the pressure equalizing circuit 17; and both opening/closing means 10 after the compressor 1 stops operating. 18. A refrigeration system characterized in that the refrigeration system is further equipped with a control means 20 that acts to simultaneously keep the refrigeration system 18 open for a predetermined period of time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990063665U JPH089573Y2 (en) | 1990-06-15 | 1990-06-15 | Refrigeration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990063665U JPH089573Y2 (en) | 1990-06-15 | 1990-06-15 | Refrigeration equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0423966U true JPH0423966U (en) | 1992-02-26 |
| JPH089573Y2 JPH089573Y2 (en) | 1996-03-21 |
Family
ID=31593918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990063665U Expired - Fee Related JPH089573Y2 (en) | 1990-06-15 | 1990-06-15 | Refrigeration equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH089573Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000274774A (en) * | 1999-03-19 | 2000-10-06 | Ntt Power & Building Facilities Inc | Air conditioner |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5179064U (en) * | 1974-12-19 | 1976-06-22 | ||
| JPS51121844A (en) * | 1975-04-16 | 1976-10-25 | Matsushita Electric Ind Co Ltd | A refrigerator |
| JPS5259943U (en) * | 1975-10-29 | 1977-04-30 | ||
| JPS57140662U (en) * | 1981-02-27 | 1982-09-03 | ||
| JPS6160066U (en) * | 1984-09-26 | 1986-04-23 | ||
| JPS6334961U (en) * | 1986-08-25 | 1988-03-07 | ||
| JPH0268458A (en) * | 1988-09-02 | 1990-03-07 | Nippon Denso Co Ltd | Freezer |
-
1990
- 1990-06-15 JP JP1990063665U patent/JPH089573Y2/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5179064U (en) * | 1974-12-19 | 1976-06-22 | ||
| JPS51121844A (en) * | 1975-04-16 | 1976-10-25 | Matsushita Electric Ind Co Ltd | A refrigerator |
| JPS5259943U (en) * | 1975-10-29 | 1977-04-30 | ||
| JPS57140662U (en) * | 1981-02-27 | 1982-09-03 | ||
| JPS6160066U (en) * | 1984-09-26 | 1986-04-23 | ||
| JPS6334961U (en) * | 1986-08-25 | 1988-03-07 | ||
| JPH0268458A (en) * | 1988-09-02 | 1990-03-07 | Nippon Denso Co Ltd | Freezer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000274774A (en) * | 1999-03-19 | 2000-10-06 | Ntt Power & Building Facilities Inc | Air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH089573Y2 (en) | 1996-03-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |