CN1908556A - Refrigerating air conditioner in high temperature working condition - Google Patents
Refrigerating air conditioner in high temperature working condition Download PDFInfo
- Publication number
- CN1908556A CN1908556A CN 200610020071 CN200610020071A CN1908556A CN 1908556 A CN1908556 A CN 1908556A CN 200610020071 CN200610020071 CN 200610020071 CN 200610020071 A CN200610020071 A CN 200610020071A CN 1908556 A CN1908556 A CN 1908556A
- Authority
- CN
- China
- Prior art keywords
- compressor
- temperature
- pressure
- requirement
- power supply
- 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
Images
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The present invention relates to an improved air conditioner refrigerating system, especially a refrigerating air conditioner in high temperature working condition. The invention is to improve the high suction temperature of the compressor in the refrigeration process to reduce the air return pressure and air return temperature and improve the operation environment of the compressor to make the compressor working in the normal operating condition. The technical proposal of the invention is: an ordinary refrigerant compressor air conditioner system used in high temperature working condition, includes a compressor, an exhaust line, a condensator, an expanding valve, an evaporator, a by-pass line, an air return line and an electrical part, characterized in that: a bypass pipe is educed from the inlet pipe of the expanding valve, and the pipe is connected to the air return line of the compressor. There is provided with a solenoid valve and a electrical part in the bypass pipe. The solenoid valve and the control switch for detecting the air return pressure or the air return temperature are connected with the power in series.
Description
Technical field
The present invention relates to the improvement of air-conditioning refrigeration system, is a kind of refrigeration air conditioner of working under worst hot case specifically.
Background technology
The suction temperature of existing common air-conditioning device compressor is about 5 ℃, and the suction temperature of the refrigeration compressor of general worst hot case is no more than 15 ℃.The operation principle of air cooling refrigeration compressor bank is: the cold-producing medium of HTHP is the condensation heat release in condenser, and throttling drops to evaporating pressure with condensing pressure, the cyclic process of absorption refrigeration in evaporation through heating power expansion valve.But in process of refrigerastion, particularly under the environment of sweltering heat, it is too high the compressor return air temperature to occur, and the situation that back pressure is excessive causes damage to compressor operating.
A kind of high temperature compressed machine of simulating worst hot case is abroad arranged now, and it directly enters compressor inside from the cold-producing medium of the inner extension cryogenic high pressure of condenser, makes worst hot case be modeled as general operating mode in compressor.But owing to directly enter compressor from condenser skirt road, make return-air that enters compressor and the cold-producing medium of introducing from condenser finely not to mix, and, when compressor inlet air temperatures reduces, it can not control the cold-producing medium that reduces or stop to import compressor, make compressor " liquid hammer " phenomenon occur easily, damage compressor.This low temperature analogue technique can not be used to adopt the refrigeration unit of ordinary refrigerant compressor simultaneously, has therefore limited the scope of application.
Summary of the invention
The present invention the too high phenomenon of compressor return air temperature occurs in order to improve in the process of refrigerastion, reduce compressor return air pressure and suction temperature, improves the compressor operating environment, and compressor is moved under the nominal situation of simulation.
Technical scheme of the present invention is: a kind of air-conditioning system of using ordinary refrigerant compressor under worst hot case, comprise compressor, gas exhaust piping, condenser, expansion valve, evaporimeter, bypass line, return line and electric part, it is characterized in that from the expansion valve inlet ductwork, drawing a bypass pipe, this bypass pipe inserts the return line of compressor, magnetic valve and throttling arrangement are housed in the bypass line, and magnetic valve is connected with a gauge tap that detects back pressure or suction temperature 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 a bypass pipe, by the control of magnetic valve the return line of expansion valve inlet ductwork and compressor being carried out throttling is communicated with, when worst hot case occurring, the suction temperature of compressor raises, pressure increases, when surpassing the normal operating range of compressor, gauge tap is communicated with, the magnetic valve energising of bypass line, lower amount of refrigerant in the expansion valve inlet ductwork is passed through the bypass line throttling and evaporation to return line, reduce the temperature and pressure of gas in the return line, compressor is moved under the nominal situation of simulation.Because a small amount of liquid refrigerant arrives return line by the side-port nipple flow evaporator, refrigerating fluid can fully mix with the gas of return line, and the connected sum of pipeline disconnects pressure or the temperature controlling that is subjected to return line gas, has avoided compressor appearance " liquid hammer " phenomenon.
Description of drawings
Fig. 1 is a refrigerating air conditioner in high temperature working condition bypass pipe johning knot composition of the present invention.
Among the figure, 1, compressor; 2, gas exhaust piping; 3, condenser; 4, expansion valve inlet ductwork: 5, expansion valve; 6, evaporimeter; 7, return line; 8, magnetic valve; 9, throttling arrangement; 10, bypass line; 11, gauge tap; 12, lead.
The specific embodiment
Referring to Fig. 1, improvement part mainly is to have increased the bypass line 10 that comprises magnetic valve 8, throttling arrangement 9, and magnetic valve 8 is connected in series to power supply by lead 12 and gauge tap 11, and bypass line 10 is communicated with expansion valve inlet ductwork 4 with return line 7.When gauge tap 11 closures, magnetic valve 8 energisings, when bypass line 10 was connected, lower amount of refrigerant to return line 7, reduced the pressure and temperature of gas in the return line from expansion valve inlet ductwork 4 throttling and evaporation, and compressor is by the simulated condition operation.When gauge tap 11 disconnections, magnetic valve 8 outages, bypass line 10 blocks, and compressor is pressed the actual condition operation.
Gauge tap 11 can be by detecting the pressure switch of back pressure control, also can be by detecting the temperature switch of suction temperature control.Pressure switch is connected the controlled pressure of power supply and is set according to the requirement of compressor, and power connection when general setting is higher than 5Mpa is lower than the 3.5Mpa power supply and disconnects; The control temperature of temperature switch is also set according to the requirement of compressor, and power connection when general setting is higher than 20 ℃ is lower than 10 ℃ of power supplys and disconnects.
Operation principle of the present invention: detect back pressure or temperature by gauge tap 11, when back pressure or suction temperature are too high, gauge tap 11 closures, the series circuit conducting, magnetic valve 8 energisings are passed through bypass pipe 10 throttling and evaporation to return line 7 with a small amount of liquid refrigerant in the expansion valve inlet ductwork 4, reduce the temperature and pressure of gas in the return line 7, compressor is moved, so that ordinary refrigerant compressor can normally operation under worst hot case under the nominal situation of simulation.When back pressure or suction temperature just often, gauge tap 11 disconnects, series circuit disconnects, magnetic valve 8 dead electricity, bypass pipe 10 blocks, compressor moves under nominal situation.
Claims (5)
1, a kind of refrigerating air conditioner in high temperature working condition, comprise compressor, expansion valve inlet ductwork, return line, magnetic valve, throttling arrangement, bypass line, gauge tap, lead, it is characterized in that having a bypass pipe road that the expansion valve inlet ductwork is communicated with return line, be connected with magnetic valve and throttling arrangement in the bypass line.
2, the said magnetic valve of claim 1 is connected with a pressure control switch that detects back pressure by lead and is received power supply.Also can connect with a temp control switch that detects suction temperature and receive power supply by lead.
3, the said pressure control switch of claim 2 controlled pressure of connecting power supply is set according to the requirement of compressor, power connection when back pressure is higher than the maximum pressure of compressor requirement, and the bottom pressure that is lower than compressor requirement power supply constantly disconnects.
4, the control temperature of the said temp control switch of claim 2 is set according to the requirement of compressor, power connection when suction temperature is higher than the maximum temperature of compressor requirement, and the temperature of the end that is lower than compressor requirement power supply constantly disconnects.
5, the said throttling arrangement of claim 1 can select to adopt expansion valve or capillary according to the size of compressor refrigerating capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610020071 CN1908556A (en) | 2006-08-31 | 2006-08-31 | Refrigerating air conditioner in high temperature working condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610020071 CN1908556A (en) | 2006-08-31 | 2006-08-31 | Refrigerating air conditioner in high temperature working condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1908556A true CN1908556A (en) | 2007-02-07 |
Family
ID=37699733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610020071 Pending CN1908556A (en) | 2006-08-31 | 2006-08-31 | Refrigerating air conditioner in high temperature working condition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1908556A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101526257B (en) * | 2009-03-26 | 2010-11-10 | 宁波海诚电器有限公司 | Method for protecting compressor when air conditioner makes heat in high temperature environment |
| CN103600748A (en) * | 2013-11-21 | 2014-02-26 | 石家庄国祥运输设备有限公司 | Air-conditioning unit |
| CN110440424A (en) * | 2019-07-26 | 2019-11-12 | 珠海格力电器股份有限公司 | A kind of anti-return hydraulic control device, method and air-conditioning equipment suitable for various working |
| CN114198857A (en) * | 2021-11-17 | 2022-03-18 | 青岛海尔空调电子有限公司 | Air conditioner control method and air conditioner system |
-
2006
- 2006-08-31 CN CN 200610020071 patent/CN1908556A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101526257B (en) * | 2009-03-26 | 2010-11-10 | 宁波海诚电器有限公司 | Method for protecting compressor when air conditioner makes heat in high temperature environment |
| CN103600748A (en) * | 2013-11-21 | 2014-02-26 | 石家庄国祥运输设备有限公司 | Air-conditioning unit |
| CN110440424A (en) * | 2019-07-26 | 2019-11-12 | 珠海格力电器股份有限公司 | A kind of anti-return hydraulic control device, method and air-conditioning equipment suitable for various working |
| CN114198857A (en) * | 2021-11-17 | 2022-03-18 | 青岛海尔空调电子有限公司 | Air conditioner control method and air conditioner system |
| CN114198857B (en) * | 2021-11-17 | 2023-02-28 | 青岛海尔空调电子有限公司 | Air conditioner control method and air conditioner system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101008535A (en) | Low-temperature heating bypass system of air source heat pump | |
| CN103615836B (en) | A kind of screw total heat recovery air-cooled heat-pump air-conditioner group | |
| CN103994598A (en) | Heat pump system used for pure electric vehicle | |
| CN200940973Y (en) | Low temp air source heat pump | |
| CN100439809C (en) | Compensating system and compensating control method for compressor | |
| CN103673138A (en) | Air conditioner and control method thereof | |
| CN1854645A (en) | Geothermal heat-pumping system | |
| CN201293489Y (en) | Water source multi-connection air conditioning system with bypass loop | |
| CN201314725Y (en) | Heat pump type room air conditioner | |
| CN201014833Y (en) | Air source heat pump low temperature heat-production bypass system | |
| CN201053785Y (en) | Heat pump air conditioner | |
| CN2828678Y (en) | Air conditioner with hot-air straight structure | |
| CN203443182U (en) | Air conditioner | |
| CN201126287Y (en) | Defrosting device of heat pump units | |
| CN1908556A (en) | Refrigerating air conditioner in high temperature working condition | |
| CN106871474A (en) | Air-cooled water-cooled combined air-conditioning system | |
| CN2849548Y (en) | Air supplying system for compressor | |
| CN101382354A (en) | Double- effective day/night high temperature water-water heat pump hot water unit | |
| CN203595316U (en) | Screw rod type total heat recovery air-cooled heat pump air conditioning unit | |
| CN204438593U (en) | Air Conditioning System with Heat | |
| CN201363971Y (en) | Energy-efficient air-conditioning device | |
| CN203869367U (en) | Floor heating system, water heater and air conditioner three-in-one unit | |
| CN203518315U (en) | Water-cooling multifunctional heat pump water chilling unit | |
| CN206771791U (en) | Air-cooled water cooling combined air-conditioning system | |
| CN205227930U (en) | Serial -type two -stage thermal -arrest heat pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Huang Mai Document name: Notice of application for publication of patent for invention and entry into the substantive examination procedure |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |