CN201652653U - Circulating air-conditioning system of liquid pump - Google Patents
Circulating air-conditioning system of liquid pump Download PDFInfo
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- CN201652653U CN201652653U CN2010201400564U CN201020140056U CN201652653U CN 201652653 U CN201652653 U CN 201652653U CN 2010201400564 U CN2010201400564 U CN 2010201400564U CN 201020140056 U CN201020140056 U CN 201020140056U CN 201652653 U CN201652653 U CN 201652653U
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Abstract
The utility model relates to a circulating air-conditioning system of a liquid pump, which comprises a liquid storage device, a liquid pump, an evaporator and a condenser which are sequentially and circularly communicated. Two air blowers are respectively arranged corresponding to the evaporator and the condenser; the circulating air-conditioning system of the liquid pump further comprises a bypass pipe and a protective switch, wherein the bypass pipe is used for splitting a liquid state refrigerant input into the liquid storage device and mixing the split liquid state refrigerant with the liquid state refrigerant output by the liquid storage device; and the protective switch is used for conducting or switching off the liquid pump according to the flow of the liquid state refrigerant flowing through the bypass pipe or the differential pressure of an inlet and an outlet of the liquid pump. The utility model solves the problem that the evaporator is frosted when the temperature of the outdoor environment is lower, ensures the stable running of the system and constant temperature and humidity in a machine room, increases degree of supercooling of the refrigerant at an outlet of the liquid storage device, ensures the stable running of the system, ensures that the flow of the refrigerant is respectively maintained at the flow value at which the refrigeration capacity of the liquid pump system is maximized and simultaneously solves the protection on the pump when the pump is cavitated or the pipeline is blocked.
Description
Technical field
The utility model relates to air-conditioning system, more particularly, relates to a kind of liquid pump circulation air-conditioning system.
Background technology
Along with the continuous development of air conditioner in machine room technology, two circulating energy-saving type air conditioner in machine room of band liquid pump have become new developing direction.It can be in the winter time or the lower situation of spring and autumn outdoor environment temperature under, substitute compressor with refrigerated medium pump and carry through outdoor subcooled cold-producing medium, by cold-producing medium cold is transported to indoorly, reach purpose of energy saving.But there is following problem in the practical application:
1. pumping system moves its refrigerating capacity and does not reach the maximum refrigerating capacity of system.
2. pump circulation time, liquid pump cavitates easily, the pumping system fluctuation of service;
3. the pump circulation time if liquid pump cavitation erosion or system pipeline obstruction take place, is not reasonably protected liquid pump, influences the operate as normal of system and may damage liquid pump;
4. during pump operation, along with the reduction of outdoor environment temperature, the temperature of evaporator coil also can reduce, and when evaporator coil temperature drops to below 0 ℃, influences system's operate as normal thereby frosting just occurs.
In refrigeration industry,, two kinds of methods are arranged usually for the device frosting that avoids evaporating, the one, by between exhaust outlet of compressor and evaporator, installing bypass solenoid valve additional, when evaporating pressure is low, just open bypass solenoid valve, make a part of high-temperature high-pressure refrigerant directly enter evaporimeter, evaporating pressure rises, when rising to certain value, the bypass solenoid valve outage is closed, so constantly circulation, evaporating pressure is stabilized in the prescribed limit, and the device frosting avoids evaporating.Two circulating energy-saving type air conditioner in machine room of band liquid pump are when liquid pump moves, and compressor is in stopped status, can't be by the device frosting that avoids evaporating of this form.The 2nd, room air is dehumidified, the method can not guarantee the humidity of indoor environment, communications equipment room requires the constant indoor temperature constant humidity, so this mode can not be used for the device frosting that avoids evaporating.
For the application of liquid pump system, do not consider how to make the maximized problem of refrigeration performance at present in the industry.
The liquid pump system of this conveying freon gasification occurs easily because of freon; this can cause the cavitation erosion of pump; cavitation erosion can reduce the life-span of pump; can damage liquid pump under the serious situation; the method of taking in the refrigeration industry mostly is by the temperature that increases liquid pump import caliber, reduction pumped (conveying) medium, increases modes such as suck-back height how much; though these modes can be alleviated pump cavitation to a certain extent; but can not guarantee that liquid pump import department cold-producing medium has enough degree of supercoolings, also in time protecting after the cavitation erosion not appearred in liquid pump.When system pipeline stops up,, also need to protect if liquid pump long-play in the case can be damaged equally.
The utility model content
The technical problems to be solved in the utility model is, do not reach the maximum refrigerating capacity of system, evaporimeter at the air conditioner in machine room of prior art and occur easily that thereby frosting influences system's operate as normal, liquid pump cavitates easily, defectives such as pumping system fluctuation of service provide a kind of liquid pump circulation air-conditioning system.
The technical scheme that its technical problem that solves the utility model adopts is: construct a kind of liquid pump circulation air-conditioning system, comprise reservoir, liquid pump, evaporimeter and condenser that circulation successively is communicated with; Corresponding described evaporimeter and condenser are respectively arranged with a blower fan, it also comprises: be used to shunt the liquid refrigerant of the described reservoir of input and the bypass pipe that the liquid refrigerant of shunting is mixed with the liquid refrigerant of described reservoir output and be used for according to the flow of the liquid refrigerant that flows through it or the pressure reduction of liquid pump import and export, conducting or turn-off the protection switch of described liquid pump; Described bypass pipe is arranged on the two ends of described reservoir, and described protection switch is arranged between described liquid pump and the evaporimeter.
In liquid pump circulation air-conditioning system described in the utility model, be used to regulate the flow control valve of the flow of liquid refrigerant, described flow control valve is arranged between described protection switch and the evaporimeter.
In liquid pump circulation air-conditioning system described in the utility model, also comprise the temperature that is used to detect described evaporator place liquid refrigerant, and, regulate the temperature sensor of the rotation speed of fan of described condenser according to detected temperature signal.
In liquid pump circulation air-conditioning system described in the utility model, described flow control valve is permanent flow valve, ball valve or electric expansion valve.
In liquid pump circulation air-conditioning system described in the utility model, described protection switch is flow switch, pressure difference switch or pressure sensor.
Implement liquid pump circulation air-conditioning system of the present utility model, have following beneficial effect: be connected in parallel on the reservoir two ends by bypass pipe, increased the degree of supercooling of reservoir outlet cold-producing medium, guaranteed the stable operation of system; When protection switch being installed on the passage between liquid pump and evaporimeter having solved pump cavitation or pipeline blockage to the protection of pump; Between protection switch and evaporimeter, flow control valve has been installed, can have been made refrigerant flow all remain on the flow value that makes liquid pump refrigerating capacity maximum; The temperature of the liquid refrigerant by detecting the evaporator place is regulated rotation speed of fan, has solved the problem of evaporimeter frosting when outdoor environment temperature is low, has guaranteed the constant of humiture in the stable operation of system and the machine room.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the system block diagram of the utility model liquid pump circulation air-conditioning system first embodiment;
Fig. 2 is the system block diagram of the utility model liquid pump circulation air-conditioning system second embodiment.
The specific embodiment
In the liquid pump circulation air-conditioning system as illustrated in fig. 1 and 2, it comprises reservoir 1, liquid pump 2, flow control valve 3, protection switch 4, temperature sensor 5, evaporimeter 6, condenser 7 and bypass pipe 8; Wherein, reservoir 1 is used for the storing liquid cold-producing medium, and liquid pump 2 is used to promote refrigerant pressure, and evaporimeter 6 is used for cold-producing medium is evaporated and exports cold, and condenser 7 is used to reduce refrigerant temperature and with condensation of refrigerant.Flow control valve 3 and protection switch 4 are as the Flow-rate adjustment protective device in this system, bypass pipe 8 is connected in parallel on the reservoir two ends, the outlet of reservoir 1 links to each other with the import of liquid pump 2, the outlet of liquid pump 2 links to each other with the import of Flow-rate adjustment protective device, the outlet of Flow-rate adjustment protective device links to each other with the import of evaporimeter 6, the outlet of evaporimeter 6 links to each other with the import of condenser 7, and the outlet of condenser 7 links to each other with the import of reservoir 1, thereby forms the mobile circulation fluid passage of liquid refrigerant of a sealing; In addition, corresponding evaporimeter 6 and condenser 7 are respectively arranged with a blower fan, regulating the temperature of liquid refrigerant wherein, and are provided with a temperature sensor 5 in the import department of evaporimeter 6.Flow control valve can be permanent flow valve, ball valve, electric expansion valve or other valve body device.Protection switch can be flow switch, pressure difference switch, pressure sensor or other switching device.
Among the embodiment shown in Figure 1, flow control valve 3 is permanent flow valves, protection switch 4 is flow switches, in work, high pressure liquid refrigerant from liquid pump 2 outlet outflows, pass through flow control valve 3 and protection switch 4 successively, carry out the adjusting of flow and the protection of liquid pump, wherein, the liquid refrigerant that permanent flow valve is used for convection current Pump for giving-out 2 carries out Flow-rate adjustment, and flow switch 4 is used for the liquid refrigeration agent flux after regulating is detected, when flow during less than a preset flow value, the flow of expression liquid refrigerant this moment is too small, and flow switch will turn-off liquid pump 2; When flow during greater than this preset flow value, the flow size of expression this liquid refrigerant this moment satisfies the requirement of system's operation, and then flow switch is with conducting liquid pump 2.The liquid refrigerant of liquid pump 2 outlets carries out Flow-rate adjustment through flow control valve 3, can guarantee that this system obtains best refrigeration, under the situation that outdoor environment temperature constantly changes, has an optimum flow value, refrigeration the best that system is obtained.Liquid refrigerant after regulating enters evaporimeter 6, absorb heat, gasify, and the cold-producing medium after the gasification enters condenser 7, carry out heat release, condensation, a liquid refrigerant part of coming out from condenser 7 flows into reservoir 1, a part flows into bypass pipe 8, and two parts mixed before entering liquid pump 2, then entered liquid pump 2 and finished circulation.At work, this bypass pipe 8 has been kept equalization of pressure in condenser 7 and the reservoir 1, can increase liquid pump 2 import cold-producing medium supercooled.
Among the embodiment shown in Figure 2, be different with Fig. 1 embodiment, flow control valve 3 is electric expansion valves, protection switch 4 is pressure difference switches.The liquid refrigerant that electric expansion valve is used for convection current Pump for giving-out 2 carries out Flow-rate adjustment, and pressure difference switch is used for the pressure reduction that liquid pump is imported and exported is detected, and when the pressure reduction of importing and exporting when liquid pump exceeds (promptly less than or greater than) default pressure difference scope, turn-offs described liquid pump; When the pressure reduction of importing and exporting when liquid pump is positioned at described default pressure difference scope, the described liquid pump of conducting.
Simultaneously, temperature sensor 5 detects the temperature value of evaporimeter 6 import departments in real time, thereby the rotation speed of fan to condenser 7 is regulated, wherein, when this temperature value during less than a preset temperature value scope, represent that temperature is low excessively this moment, correspondingly can reduce rotation speed of fan, improve the pressure of condenser 7 outlets, improve the temperature of evaporimeter 6 imports, device 6 frostings effectively avoid evaporating; When this temperature value during greater than this preset temperature value scope, can improve the rotating speed of blower fan this moment, and when this temperature value is in the preset temperature value scope, the current operating condition of maintenance blower fan.
The technical solution of the utility model is connected in parallel on the reservoir two ends by bypass pipe, has increased the degree of supercooling of reservoir outlet cold-producing medium, has guaranteed the stable operation of system; When protection switch being installed on the passage between liquid pump and evaporimeter having solved pump cavitation or pipeline blockage to the protection of pump; Between protection switch and evaporimeter, flow control valve has been installed, can have been made refrigerant flow all remain on the flow value that makes liquid pump refrigerating capacity maximum; The temperature of the liquid refrigerant by detecting the evaporator place is regulated rotation speed of fan, has solved the problem of evaporimeter frosting when outdoor environment temperature is low, has guaranteed the constant of humiture in the stable operation of system and the machine room.
The utility model describes by several specific embodiments, it will be appreciated by those skilled in the art that, under the situation that does not break away from the utility model scope, can also carry out various conversion and be equal to alternative the utility model.In addition, at particular condition or concrete condition, can make various modifications to the utility model, and not break away from scope of the present utility model.Therefore, the utility model is not limited to disclosed specific embodiment, and should comprise the whole embodiments that fall in the utility model claim scope.
Claims (5)
1. a liquid pump circulation air-conditioning system comprises reservoir, liquid pump, evaporimeter and condenser that circulation successively is communicated with; Corresponding described evaporimeter and condenser are respectively arranged with a blower fan, it is characterized in that, also comprise: be used to shunt the liquid refrigerant of the described reservoir of input and the bypass pipe that the liquid refrigerant of shunting is mixed with the liquid refrigerant of described reservoir output and be used for, conducting or turn-off the protection switch of described liquid pump according to the flow of the liquid refrigerant that flows through it or the pressure reduction of liquid pump import and export; Described bypass pipe is arranged on the two ends of described reservoir, and described protection switch is arranged between described liquid pump and the evaporimeter.
2. liquid pump circulation air-conditioning system according to claim 1 is characterized in that, is used to regulate the flow control valve of the flow of liquid refrigerant, and described flow control valve is arranged between described protection switch and the evaporimeter.
3. liquid pump circulation air-conditioning system according to claim 1 and 2, it is characterized in that, also comprise the temperature that is used to detect described evaporator place liquid refrigerant, and, regulate the temperature sensor of the rotation speed of fan of described condenser according to detected temperature signal.
4. liquid pump circulation air-conditioning system according to claim 2 is characterized in that described flow control valve is permanent flow valve, ball valve or electric expansion valve.
5. liquid pump circulation air-conditioning system according to claim 1 and 2 is characterized in that described protection switch is flow switch, pressure difference switch or pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201400564U CN201652653U (en) | 2010-03-22 | 2010-03-22 | Circulating air-conditioning system of liquid pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201400564U CN201652653U (en) | 2010-03-22 | 2010-03-22 | Circulating air-conditioning system of liquid pump |
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| CN201652653U true CN201652653U (en) | 2010-11-24 |
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| CN2010201400564U Expired - Lifetime CN201652653U (en) | 2010-03-22 | 2010-03-22 | Circulating air-conditioning system of liquid pump |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297481A (en) * | 2011-08-30 | 2011-12-28 | 深圳市英维克科技有限公司 | Energy-saving air conditioning system |
| CN103615774A (en) * | 2013-11-12 | 2014-03-05 | 曙光信息产业(北京)有限公司 | Auxiliary device for pump system, control method for auxiliary device and pump system |
| CN104359186A (en) * | 2014-10-27 | 2015-02-18 | 芜湖美智空调设备有限公司 | Control method for air conditioner and control device for air conditioner |
| CN106322694A (en) * | 2016-09-20 | 2017-01-11 | 北京工业大学 | Monitoring system for pump driving two-phase composite refrigerating unit |
| CN103822345B (en) * | 2013-12-06 | 2017-04-26 | 曙光节能技术（北京）股份有限公司 | Refrigerant cooling method and refrigerant cooling system |
| CN107421172A (en) * | 2017-06-20 | 2017-12-01 | 广东海悟科技有限公司 | A kind of anti-cavitation system of frequency conversion refrigerated medium pump entrance and its control method |
| CN108548352A (en) * | 2018-04-20 | 2018-09-18 | 依米康科技集团股份有限公司 | A kind of computer-room air conditioning system and its control method |
| CN109974201A (en) * | 2018-12-18 | 2019-07-05 | 青岛经济技术开发区海尔热水器有限公司 | Defrosting control method and air source heat pump system |
| CN110186233A (en) * | 2019-06-03 | 2019-08-30 | 浙江盾安冷链系统有限公司 | CO2Refrigeration system |
| CN113465225A (en) * | 2020-03-31 | 2021-10-01 | Lg电子株式会社 | Heat pump and operation method thereof |
| CN113719977A (en) * | 2020-05-22 | 2021-11-30 | 广东美的暖通设备有限公司 | Control method of fluorine pump system, and computer-readable storage medium |
| CN115574392A (en) * | 2022-11-02 | 2023-01-06 | 香港华艺设计顾问(深圳)有限公司 | External ice melting open type primary pump system, cold supply method, medium and equipment thereof |
-
2010
- 2010-03-22 CN CN2010201400564U patent/CN201652653U/en not_active Expired - Lifetime
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297481A (en) * | 2011-08-30 | 2011-12-28 | 深圳市英维克科技有限公司 | Energy-saving air conditioning system |
| CN103615774A (en) * | 2013-11-12 | 2014-03-05 | 曙光信息产业(北京)有限公司 | Auxiliary device for pump system, control method for auxiliary device and pump system |
| CN103615774B (en) * | 2013-11-12 | 2017-01-18 | 曙光节能技术（北京）股份有限公司 | Auxiliary device for pump system, control method for auxiliary device and pump system |
| CN103822345B (en) * | 2013-12-06 | 2017-04-26 | 曙光节能技术（北京）股份有限公司 | Refrigerant cooling method and refrigerant cooling system |
| CN104359186A (en) * | 2014-10-27 | 2015-02-18 | 芜湖美智空调设备有限公司 | Control method for air conditioner and control device for air conditioner |
| CN106322694B (en) * | 2016-09-20 | 2022-03-04 | 北京工业大学 | Pump-driven two-phase composite refrigerating unit monitoring system |
| CN106322694A (en) * | 2016-09-20 | 2017-01-11 | 北京工业大学 | Monitoring system for pump driving two-phase composite refrigerating unit |
| CN107421172A (en) * | 2017-06-20 | 2017-12-01 | 广东海悟科技有限公司 | A kind of anti-cavitation system of frequency conversion refrigerated medium pump entrance and its control method |
| CN107421172B (en) * | 2017-06-20 | 2023-05-19 | 广东海悟科技有限公司 | Variable-frequency refrigerant pump inlet cavitation prevention system and control method thereof |
| CN108548352A (en) * | 2018-04-20 | 2018-09-18 | 依米康科技集团股份有限公司 | A kind of computer-room air conditioning system and its control method |
| CN108548352B (en) * | 2018-04-20 | 2021-06-01 | 依米康科技集团股份有限公司 | Control method of machine room air conditioning system |
| CN109974201A (en) * | 2018-12-18 | 2019-07-05 | 青岛经济技术开发区海尔热水器有限公司 | Defrosting control method and air source heat pump system |
| CN110186233A (en) * | 2019-06-03 | 2019-08-30 | 浙江盾安冷链系统有限公司 | CO2Refrigeration system |
| CN113465225A (en) * | 2020-03-31 | 2021-10-01 | Lg电子株式会社 | Heat pump and operation method thereof |
| CN113465225B (en) * | 2020-03-31 | 2023-06-20 | Lg电子株式会社 | Heat pump and operation method thereof |
| US12117857B2 (en) | 2020-03-31 | 2024-10-15 | Lg Electronics Inc. | Heat pump and method for operating heat pump |
| CN113719977A (en) * | 2020-05-22 | 2021-11-30 | 广东美的暖通设备有限公司 | Control method of fluorine pump system, and computer-readable storage medium |
| CN115574392A (en) * | 2022-11-02 | 2023-01-06 | 香港华艺设计顾问(深圳)有限公司 | External ice melting open type primary pump system, cold supply method, medium and equipment thereof |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Nanshan District Xueyuan Road in Shenzhen city of Guangdong province 518055 No. 1001 Nanshan Chi Park B2 building 1-4 floor, building 6-10 Patentee after: Vitamin Technology Co., Ltd. Address before: 518057 Nanshan District science and Technology Industrial Park, Guangdong, Shenzhen Branch Road, No. Patentee before: Aimosheng Network Energy Source Co., Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101124 |