CN202141257U - Year round refrigeration air-cooled cold water set with pressure maintenance valve - Google Patents
Year round refrigeration air-cooled cold water set with pressure maintenance valve Download PDFInfo
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- CN202141257U CN202141257U CN201120203857U CN201120203857U CN202141257U CN 202141257 U CN202141257 U CN 202141257U CN 201120203857 U CN201120203857 U CN 201120203857U CN 201120203857 U CN201120203857 U CN 201120203857U CN 202141257 U CN202141257 U CN 202141257U
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Abstract
The utility model discloses a year round refrigeration air-cooled cold water set with pressure maintenance valve and belongs to the field of refrigerating machinery technology. A conventional air-cooled cold water set fails to maintain enough difference between high pressure and low pressure in a start stage and an operation stage of a compressor, thereby having poor operation reliability and performance. The year round refrigeration air-cooled cold water set with the pressure maintenance valve comprises the compressor, an air-cooled condenser, a throttling device, an evaporator, and a liquid reservoir, which are connected in a circular refrigerating circuit. The year round refrigeration air-cooled cold water set with the pressure maintenance valve is characterized in that the pressure maintenance valve is connected between the compressor and the air-cooled condenser. When it is very cold in winter, the pressure maintenance valve is capable of maintaining the difference between the high pressure and low pressure for oil supply of the compressor during the operation process of the compressor and thus improves the performance and the operation reliability of the set, thereby guaranteeing that the year round refrigeration air-cooled cold water set maintains reliable refrigerating operation at various air temperatures all year round.
Description
Technical field
The utility model belongs to the refrigerating machine technical field, relates to a kind of wind-cooled cold-water unit, the wind-cooled cold-water unit of a kind of year round cooling of more specifically saying so.
Background technology
The course of work of refrigeration air-conditioner is exactly an energy transfer process in fact: as far as using side, through compressor work energy being transferred to the external world during refrigeration, then is through compressor work outside energy to be shifted into when heating.Because the wind-cooled cold-water unit is to utilize the air of outdoor environment to come the cooling refrigeration agent; And outdoor environment temperature is very big with seasonal variations; In the application scenario that requires also need freeze winter, the environment temperature height has direct relation to the refrigerating capacity and the operational reliability of unit.When outer compression ring border temperature is very low; Condensation temperature owing to unit in helical-lobe compressor startup and the running is very low; Compressor is difficult to set up enough height pressure reduction; Can cause compressor loads speed very slow and oil inside offering is not enough like this, cause compressor to receive badly damaged easily because of lubricated, cooling deficiency; Simultaneously, because condensing pressure is too low, the inlet outlet pressure differential of expansion valve is too little, will cause refrigerant flow low excessively, has a strong impact on the refrigeration performance of unit.Existing wind-cooled cold-water unit comprises compressor, air-cooled condenser, throttling arrangement, evaporimeter; Wherein air-cooled condenser is made up of several radiators and condensation fan; Thereby rely on operation blower fan quantity and rotation speed change to change the condensation ability that air quantity is adjusted unit during operation, and this adjustment capability is quite limited in the winter of cold, particularly in the unit starting stage; Even condensation fan does not put into operation; Because of the little condensation area of compressor air-discharging amount seems more than needed under big temperature difference heat exchange, cause compressor to be difficult in the short time set up enough height pressure reduction, cause wind-cooled cold-water unit operation reliability to reduce greatly.
Summary of the invention
The technical problem that the utility model will solve and the technical assignment of proposition are to overcome existing wind-cooled cold-water unit to be difficult to set up enough height pressure reduction in the short time at unit starting stage compression machine; The defective that causes wind-cooled cold-water unit operation reliability to reduce provides a kind of year round cooling wind-cooled cold-water unit of keeping valve with pressure.
For reaching the purpose of the utility model; The year round cooling wind-cooled cold-water unit that the band pressure of the utility model is kept valve comprises compressor, air-cooled condenser, throttling arrangement, evaporimeter, the liquid reservoir that is connected in the circulating refrigerant loop, it is characterized in that: be connected pressure between described compressor and the air-cooled condenser and keep valve.
As the optimization technique measure, described pressure is kept on the exhaust outlet that valve is installed on said compressor and through balance pipe and is connected with the low-pressure side of said compressor.
As the optimization technique measure, described air-cooled condenser comprises some groups of radiator coil tubes and blower fan.
As the optimization technique measure; In valve body, offer the exhaust passage; The two ends of said exhaust passage form import and outlet respectively, but the piston of shutoff exhaust passage is set in described valve body and is supported by spring, and communicating with said exhaust passage outwards is connected balance pipe.
The utility model is in the unit starting stage; When temperature is very low especially in the winter time; Unit then relies on pressure to keep valve fully and sets up the required height pressure reduction of compressor, guarantees reliability of operation first, and second unit loads rapidly; It is faster to freeze, thereby really is implemented in annual reliably refrigerating operaton.
Has independently blower fan on several radiator coil tubes respectively; When unit normally moves, open and the adjusting rotation speed of fan through the control blower fan, make air-cooled condenser regulate the condenser heat with variation of ambient temperature; Reach the effect of energy savings, and make the wind-cooled cold-water unit operation stable.
Description of drawings
Fig. 1 is the refrigeration system schematic flow sheet that the utility model band pressure is kept the year round cooling wind-cooled cold-water unit of valve.
Fig. 2 is the structural representation that the utility model pressure is kept valve.
Among the figure: the 1-compressor, the 2-air-cooled condenser, the 3-throttling arrangement, the 4-evaporimeter, the 5-liquid reservoir, the 6-device for drying and filtering, 7-pressure is kept valve, 8-blower fan, 9-radiator coil tube, 10-balance pipe, 11-valve body, 12-import, 13-outlet, 14-piston, 15-spring.
The specific embodiment
Below in conjunction with Figure of description the utility model is further specified.
The band pressure of the utility model is kept the year round cooling wind-cooled cold-water unit of valve; As shown in Figure 1; It comprises compressor 1, air-cooled condenser 2, throttling arrangement 3, evaporimeter 4, the liquid reservoir 5 that is connected in the circulating refrigerant loop, and wherein said air-cooled condenser 2 comprises several radiator coil tubes 9 and blower fan 8.The wind-cooled cold-water unit of said structure and prior art is similar, therefore no longer launches to describe.
The characteristics of the wind-cooled cold-water unit of the year round cooling of the utility model are that it comprises that also pressure keeps valve 7, and pressure is kept that valve 7 is installed on that the compressor air-discharging outlet is gone up and kept the valve top at pressure and through balance pipe 10 the suction side pressure signal is directed into pressure and keeps in the valve.
It is as shown in Figure 2 that pressure is kept valve 7 internal structures; Be in valve body 11, to offer the exhaust passage; The two ends of exhaust passage are respectively import 12 and outlet 13, but the piston 14 of shutoff exhaust passage is set in valve body and is supported by spring 15, and communicating with the exhaust passage outwards is connected balance pipe 10.Before compressor 1 starts, high-low pressure dynamic balance in the machine set system, pressure is kept valve 7 pistons 14 and under spring 15 pressure effects, the exhaust passage is closed; Behind the compressor start, because of closing the exhaust passage, pressure at expulsion rises very soon; When system height pressure reduction reach setting open valve pressure reduction the time; Pressure is kept on the valve piston 14 and is moved, and valve open, compressor air-discharging get into condensation in the condenser smoothly.Behind compressor start, rely on pressure to keep valve and can make compressor set up enough height pressure reduction rapidly at short notice, and then it is smooth and easy to ensure that compressor displacement regulating loads, ensure that compressor does not cause harmful effect because of losing oil.
The operation principle of the wind-cooled cold-water unit of the year round cooling of following brief account utility model, compressor 1 sucks the low-temperature low-pressure refrigerant steam of flash-pot 4, becomes the superheated vapor of HTHP after the both vapor compression work done to low-temp low-pressure.Then, the refrigerant vapour of high pressure-temperature gets into air-cooled condenser 2, and through the forced ventilation of blower fan 8, the surrounding air lower with temperature carries out heat exchange, with the heat transferred air that is discharged in the condensation process, makes gaseous refrigerant be condensed into highly pressurised liquid.Highly pressurised liquid becomes the higher gas-fluid two-phase mixture of low-temp low-pressure and content liquid through throttling arrangement 3 after the throttling step-down, these gas-fluid two-phase mixtures get into evaporimeter 4.In evaporimeter 4; The cold-producing medium of low-temp low-pressure will be higher relatively with temperature chilled water generation exchange heat; Refrigerant liquid becomes generating gasification into the low-temperature low-pressure refrigerant steam behind the heat of absorption refrigerating water, thereby the temperature that has reduced chilled water reaches the refrigeration purpose.Refrigerant vapour after the gasification will be inhaled into compressor, so reciprocation cycle.
Claims (4)
1. year round cooling wind-cooled cold-water unit of keeping valve with pressure; Comprise the compressor (1), air-cooled condenser (2), throttling arrangement (3), evaporimeter (4), the liquid reservoir (5) that are connected in the circulating refrigerant loop, it is characterized in that: be connected pressure between described compressor (1) and the air-cooled condenser (2) and keep valve (7).
2. according to claim 1ly a kind ofly keep the year round cooling wind-cooled cold-water unit of valve with pressure, it is characterized in that: described pressure is kept on the exhaust outlet that valve (7) is installed on said compressor and is connected with the low-pressure side of said compressor through balance pipe (10).
3. according to claim 1ly a kind ofly keep the year round cooling wind-cooled cold-water unit of valve with pressure, it is characterized in that: described air-cooled condenser (2) comprises some groups of radiator coil tubes (9) and blower fan (8).
4. a kind of year round cooling wind-cooled cold-water unit of keeping valve with pressure according to claim 1; It is characterized in that: in valve body (11), offer the exhaust passage; The two ends of said exhaust passage form import (12) and outlet (13) respectively; At described valve body (11) but in the piston (14) of shutoff exhaust passage be set and support by spring (15), communicating with said exhaust passage outwards is connected balance pipe (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120203857U CN202141257U (en) | 2011-06-16 | 2011-06-16 | Year round refrigeration air-cooled cold water set with pressure maintenance valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120203857U CN202141257U (en) | 2011-06-16 | 2011-06-16 | Year round refrigeration air-cooled cold water set with pressure maintenance valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202141257U true CN202141257U (en) | 2012-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120203857U Expired - Fee Related CN202141257U (en) | 2011-06-16 | 2011-06-16 | Year round refrigeration air-cooled cold water set with pressure maintenance valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202141257U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679753A (en) * | 2018-05-21 | 2018-10-19 | 芜湖优能自动化设备有限公司 | A kind of cooling-water machine for pressure valve voltage adjusting device |
-
2011
- 2011-06-16 CN CN201120203857U patent/CN202141257U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679753A (en) * | 2018-05-21 | 2018-10-19 | 芜湖优能自动化设备有限公司 | A kind of cooling-water machine for pressure valve voltage adjusting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG KING AIR CONDITIONER CO., LTD. Free format text: FORMER NAME: ZHEJIANG KING AIR CONDITIONING EQUIPMENT CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 312300 Zhejiang city of Shaoxing province Shangyu city street high road No. 18 Patentee after: Zhejiang Guo Xiang air-conditioning limited company Address before: 312300 Hongxing Village, Shangyu Economic Development Zone (Cao E street, Shaoxing, Zhejiang) Patentee before: Zhejiang Guo Xiang Air Conditioner Equipment Co., Ltd |
|
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 312300 Zhejiang city of Shaoxing province Shangyu city street high road No. 18 Patentee after: Zhejiang state auspicious Limited by Share Ltd Address before: 312300 Zhejiang city of Shaoxing province Shangyu city street high road No. 18 Patentee before: Zhejiang Guo Xiang air-conditioning limited company |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120208 Termination date: 20180616 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |