CN1459608A - Low temperature refrigerating air conditioner - Google Patents
Low temperature refrigerating air conditioner Download PDFInfo
- Publication number
- CN1459608A CN1459608A CN 02110468 CN02110468A CN1459608A CN 1459608 A CN1459608 A CN 1459608A CN 02110468 CN02110468 CN 02110468 CN 02110468 A CN02110468 A CN 02110468A CN 1459608 A CN1459608 A CN 1459608A
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- Prior art keywords
- air
- low
- air conditioner
- pipeline
- low temperature
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- Air Conditioning Control Device (AREA)
Abstract
A low-temp refrigerating air conditioner has compressor, exhaust pipeline, return-air pipeline and electric unit. It is characterized by its by-pass pipeline connected to said exhaust pipeline and return-air pipeline, and an electromagnetic valve connected to said by-pass pipeline. Said electromagnetic valve is serially connected with a low-voltage switch for detecting the pressure of return air. It can prevent the over-low temp of sucked air and increase the pressure of sucked air and the heating effect on preventing frosting of outdoor unit.
Description
Technical field
The present invention relates to the improvement of air-conditioner refrigerating system, is a kind of low temperature refrigerating air conditioner specifically.
Background technology
Existing common air-conditioning device can only be in refrigeration more than 15 ℃, the operation principle of air-cooled handpiece Water Chilling Units is: the cold-producing medium of HTHP is the condensation heat release in condenser, throttling drops to evaporating pressure with condensing pressure, the cyclic process of absorption refrigeration in evaporimeter through heating power expansion valve.But in process of refrigerastion, it is too much liquid to occur back through regular meeting, evaporates insufficiently, and suction temperature is low, and frosting is serious, can't be normally with carry out heat exchange on every side.
Summary of the invention
The present invention the low excessively phenomenon of suction temperature occurs in order to improve in the process of heating and the process of refrigerastion, improve pressure of inspiration(Pi), improves off-premises station and saves white situation, improves heating effect.
Technical scheme of the present invention is: a kind of low temperature refrigerating air conditioner, comprise compressor, gas exhaust piping, return line and electric part, it is characterized in that having the bypass line of a connection gas exhaust piping and return line, connect a magnetic valve in the bypass line, magnetic valve is connected with a low tension switch that detects back pressure by lead and is received power supply.
The present invention compared with prior art has many advantages and good effect:
The present invention sets up the bypass line of a connection gas exhaust piping and return line, connects a magnetic valve in the bypass line, and magnetic valve is connected with a low tension switch that detects back pressure by lead and received power supply.Can regulate back pressure/temperature, prevent indoor freezing, improve off-premises station and save white situation, improve heating effect, under cryogenic conditions so that air-conditioner can be freezed.It is simple in structure, is convenient to implement.
Description of drawings
Fig. 1 is a low temperature refrigerating air conditioner bypass line johning knot composition of the present invention.
The specific embodiment
Among the figure, 1, low tension switch; 2, lead; 3, magnetic valve; 4, bypass line; 5, gas exhaust piping; 6, compressor; 7, return line.
Referring to Fig. 1, a kind of low temperature refrigerating air conditioner, comprise compressor 6, gas exhaust piping 5, return line 7 and electric part, improvement part mainly is the bypass line 4 that has increased a connection gas exhaust piping 5 and return line 7, connect a magnetic valve 3 in the bypass line 4, magnetic valve 3 is connected with a low tension switch 1 that detects back pressure by lead 2 and is received power supply.
Operation principle of the present invention: detect back pressure by low tension switch 1, when back pressure is crossed when low, low tension switch 1 closure, the series circuit conducting, magnetic valve 3 is opened, and a part of compressor 6 exhausts is directly mixed with return-air without two devices by magnetic valve 3 get back to compressor 6, with adjusting back pressure/temperature, prevent indoor freeze and back pressure low excessively so that air-conditioner can be freezed under-18 ℃ of conditions.
Claims (1)
1, a kind of low temperature refrigerating air conditioner, comprise compressor, gas exhaust piping, return line and electric part, it is characterized in that having the bypass line of a connection gas exhaust piping and return line, connect a magnetic valve in the bypass line, magnetic valve is connected with a low tension switch that detects back pressure by lead and is received power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02110468 CN1459608A (en) | 2002-05-25 | 2002-05-25 | Low temperature refrigerating air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02110468 CN1459608A (en) | 2002-05-25 | 2002-05-25 | Low temperature refrigerating air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1459608A true CN1459608A (en) | 2003-12-03 |
Family
ID=29426322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02110468 Pending CN1459608A (en) | 2002-05-25 | 2002-05-25 | Low temperature refrigerating air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1459608A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818974A (en) * | 2010-02-11 | 2010-09-01 | 重庆远雄制冷成套设备有限公司 | Hot air deicing refrigeration system of single-plate plate ice machine |
| CN106595158A (en) * | 2016-12-22 | 2017-04-26 | 重庆美的通用制冷设备有限公司 | Low-pressure control method, system and air conditioner for unit refrigeration system |
| CN108317667A (en) * | 2018-01-22 | 2018-07-24 | 青岛海尔空调器有限总公司 | A kind of air-conditioning internal machine freezing detection method and device |
| CN109186145A (en) * | 2018-08-17 | 2019-01-11 | 佛山市澳霆环境设备制造有限公司 | It is a kind of to prevent refrigeration system of the compressor air suction with liquid |
-
2002
- 2002-05-25 CN CN 02110468 patent/CN1459608A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818974A (en) * | 2010-02-11 | 2010-09-01 | 重庆远雄制冷成套设备有限公司 | Hot air deicing refrigeration system of single-plate plate ice machine |
| CN101818974B (en) * | 2010-02-11 | 2012-06-27 | 中机西南能源科技有限公司 | Hot air deicing refrigeration system of single-plate plate ice machine |
| CN106595158A (en) * | 2016-12-22 | 2017-04-26 | 重庆美的通用制冷设备有限公司 | Low-pressure control method, system and air conditioner for unit refrigeration system |
| CN108317667A (en) * | 2018-01-22 | 2018-07-24 | 青岛海尔空调器有限总公司 | A kind of air-conditioning internal machine freezing detection method and device |
| CN108317667B (en) * | 2018-01-22 | 2020-12-29 | 青岛海尔空调器有限总公司 | Method and device for detecting icing of air conditioner indoor unit |
| CN109186145A (en) * | 2018-08-17 | 2019-01-11 | 佛山市澳霆环境设备制造有限公司 | It is a kind of to prevent refrigeration system of the compressor air suction with liquid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |