CN201163118Y - Novel refrigeration unit - Google Patents
Novel refrigeration unit Download PDFInfo
- Publication number
- CN201163118Y CN201163118Y CNU2008200760033U CN200820076003U CN201163118Y CN 201163118 Y CN201163118 Y CN 201163118Y CN U2008200760033 U CNU2008200760033 U CN U2008200760033U CN 200820076003 U CN200820076003 U CN 200820076003U CN 201163118 Y CN201163118 Y CN 201163118Y
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- China
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- working medium
- refrigeration
- medium pump
- refrigeration unit
- refrigerant
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Abstract
The utility model relates to a novel refrigerating unit, which belongs to air conditioning refrigeration equipment. The refrigerating unit takes a refrigeration compressor, a condenser, an expansion valve, an evaporator, and a working medium pump as main equipment; when refrigerant has higher temperature, the working medium pump is in a stop state; no matter how low the temperature of the refrigerant and the condensing pressure are, even if the condensing pressure is lower than the evaporating pressure, the refrigerating unit can perform normal, reliable and highly economical refrigeration operation by starting the working medium pump to improve the pressure of the refrigerant at an inlet of the expansion valve; and when the difference between the evaporating pressure and the condensing pressure is larger, the normal, reliable and highly economical refrigeration operation can be performed under the condition of not starting the refrigeration compressor.
Description
This practicality relates to a kind of New Refrigerating unit, says so exactly to relate to a kind of refrigeration unit that can whole year operation.
In air-conditioning and refrigeration application, when the coolant temperature of refrigeration unit condenser reduces gradually, the condensing pressure of refrigeration unit reduces gradually, condensing pressure and evaporating pressure difference reduce gradually, when after coolant temperature is reduced to a certain degree, also reducing gradually again, condensing pressure that reduces gradually and evaporating pressure official post reduce gradually by the refrigerant flow of refrigeration unit expansion valve, cause the refrigerating capacity of refrigeration unit to reduce gradually, the evaporating pressure of refrigeration unit reduces gradually, the operation conditions of refrigeration unit is run down, the stability and the reliability variation of refrigeration unit operation can not be carried out normal refrigerating operaton, until not carrying out refrigerating operaton.At present, for the air cooling refrigeration unit, when coolant temperature reduced, the general method that reduces through the air-cooled condenser air quantity that adopts made the condensing pressure value of refrigeration unit stable within the specific limits; For the water cooled refrigeration unit, the general employing reduces the cooling water water yield and/or reduces method such as blower fan of cooling tower air quantity, make the condensing pressure value of refrigeration unit stable within the specific limits, when coolant temperature reduces, can carry out normal refrigerating operaton to guarantee refrigeration unit.
According to the Refrigeration Technique theory, when evaporating pressure remained unchanged, condensing pressure was high more, and the refrigerating capacity of refrigeration unit is more little, and the coefficient of performance COP of refrigeration unit is more little, and the economy of refrigeration unit is low more.Present employed refrigeration unit is in order to guarantee that when coolant temperature reduces unit can carry out normal refrigerating operaton, the condensing pressure value of unit is remained on than higher numerical value, the refrigerating capacity of refrigeration unit is less, the coefficient of performance COP of refrigeration unit is lower, has sacrificed the economy of refrigeration unit.
The purpose of this utility model is the above-mentioned shortcoming that overcomes refrigeration unit, and a kind of high New Refrigerating unit of economy that can carry out to normal reliable refrigerating operaton at all seasons is provided.
The purpose of this utility model is achieved in that present employed refrigeration unit is made up of capital equipments such as refrigeration compressor, condenser, expansion valve, evaporimeter and parts, between refrigeration compressor exhaust outlet and condenser air inlet, link to each other by the refrigeration compressor blast pipe, between condenser leakage fluid dram and expansion valve import, link to each other by the condenser drain pipe, between expansion valve outlet and evaporimeter inlet, link to each other, between evaporimeter gas outlet and refrigeration compressor air suction mouth, link to each other by the refrigeration compressor air suction pipe by the evaporimeter feed tube.On the condenser drain pipe of present employed refrigeration unit working medium pump is set, has so just constituted a kind of New Refrigerating unit, when coolant temperature was higher, working medium pump was in halted state.The operation principle of refrigeration unit of the present utility model is identical with the operation principle of present employed refrigeration unit, reduce gradually at coolant temperature and to cause the condensing pressure of refrigeration unit to reduce gradually, condensing pressure and evaporating pressure difference reduce gradually, in order to guarantee needs to refrigerating capacity, the aperture of expansion valve increases gradually, the refrigerating capacity that reduces to refrigeration unit when the refrigerant flow of the expansion valve by standard-sized sheet can not meet the demands or can not normally carry out refrigerating operaton the time, starting working medium pump boosts refrigerant liquid, the degree of superheat of utilizing the evaporator outlet refrigerant vapour is as the control parameter, use method such as frequency control to regulate the rotating speed of working medium pumps, refrigerant liquid is brought up at the pressure of expansion valve porch satisfied refrigerating capacity and require needed numerical value.Even when condensing pressure is lower than evaporating pressure, because the pressurization of working medium pump, by the satisfied requirement of refrigerant flow total energy of expansion valve to refrigerating capacity.When condensing pressure is lower than evaporating pressure and evaporating pressure and condensing pressure difference and can overcomes refrigerant vapour through resistance in condenser of evaporimeter, refrigeration compressor air suction pipe, refrigeration compressor, refrigeration compressor exhaust pipe flow, can stop the operation of refrigeration compressor, refrigeration unit still can be carried out the refrigerating operaton of normal reliable.
The utility model satisfies the refrigerating capacity requirement or carries out the needed numerical value of normal refrigerating operaton owing to using working medium pump that refrigerant liquid is brought up at the pressure of expansion valve porch when the coolant temperature reduction causes the refrigeration unit condensing pressure to reduce, even when condensing pressure is lower than evaporating pressure, because the pressurization of working medium pump, refrigerant flow total energy by expansion valve satisfies the requirement of refrigerating capacity or carries out the requirement of normal refrigerating operaton, and, condensing pressure can overcome refrigerant vapour when evaporimeter flow to resistance the condenser when being lower than evaporating pressure and evaporating pressure and condensing pressure difference, can stop the operation of refrigeration compressor, because condensing pressure is lower even can be lower than evaporating pressure during refrigerating operaton, the unit mass refrigerating capacity and the overall refrigerating effect of cold-producing medium improve a lot, the power consumption of refrigeration compressor reduces significantly even can be out of service, improve the coefficient of performance COP value of refrigeration unit operation significantly, improved the economy of refrigeration unit operation significantly.
Concrete principle process of the present utility model is provided by following embodiment and accompanying drawing thereof.
Fig. 1 is the principle flow chart of the refrigeration unit of proposition according to the present invention.
Below in conjunction with details and the working condition of accompanying drawing detailed description according to the concrete unit that the utility model proposes.
Among Fig. 1, refrigeration compressor (1), condenser (2), expansion valve (3), evaporimeter (4), working medium pump (5) is for forming the capital equipment and the parts of refrigeration unit, between the refrigerant inlet of the exhaust outlet of refrigeration compressor (1) and condenser (2), link to each other by refrigeration compressor blast pipe (6), between the import of the refrigerant outlet of condenser (2) and working medium pump (5), link to each other by condenser drain pipe (7), between the import of the outlet of working medium pump (5) and expansion valve (3), link to each other by working medium pump drain pipe (8), between the refrigerant inlet of the outlet of expansion valve (3) and evaporimeter (4), link to each other by evaporimeter feed tube (9), between the air entry of the refrigerant outlet of evaporimeter (4) and refrigeration compressor (1), link to each other, so constitute New Refrigerating unit of the present invention by refrigeration compressor air suction pipe (10).When coolant temperature is higher, working medium pump (5) is in halted state, the operation principle of refrigeration unit of the present utility model is identical with the operation principle of present employed refrigeration unit, the cooled compressor of refrigerant vapour (1) of evaporation sucks in evaporimeter (4), after boosting, enter in the condenser (2) and be condensed into liquid, after expansion valve (3) expansion step-down, enter evaporation in the evaporimeter (4) again, so realize kind of refrigeration cycle.When after coolant temperature is reduced to a certain degree, also reducing gradually again, condensing pressure that reduces gradually and evaporating pressure official post reduce gradually by the refrigerant flow of expansion valve (3), cause the refrigerating capacity of refrigeration unit to reduce gradually, the evaporating pressure of refrigeration unit reduces gradually, the operation conditions of refrigeration unit is run down, the stability and the reliability variation of refrigeration unit operation, can not carry out normal refrigerating operaton, in order to guarantee needs to refrigerating capacity, starting working medium pump (5) boosts refrigerant liquid, the degree of superheat of utilizing evaporimeter (4) outlet refrigerant vapour is as the control parameter, use method such as frequency control to regulate the rotating speed of working medium pumps (5), refrigerant liquid is brought up at the pressure of expansion valve (3) porch satisfied refrigerating capacity and require needed numerical value.Even when condensing pressure is lower than evaporating pressure, because the pressurization of working medium pump (5), by the satisfied requirement of refrigerant flow total energy of expansion valve (3) to refrigerating capacity.When being lower than evaporating pressure and evaporating pressure and condensing pressure difference, condensing pressure can overcome refrigerant vapour when evaporimeter (4), refrigeration compressor air suction pipe (10), refrigeration compressor (1), refrigeration compressor blast pipe (6) flow to resistance in the condenser (2), can stop the operation of refrigeration compressor (1), refrigeration unit still can be carried out normal refrigerating operaton.
Claims (2)
1, a kind of is the refrigeration unit of main component devices and parts with refrigeration compressor (1), condenser (2), expansion valve (3), evaporimeter (4), working medium pump (5), it is characterized in that:
Between the refrigerant inlet of the exhaust outlet of refrigeration compressor (1) and condenser (2), link to each other by refrigeration compressor blast pipe (6), between the import of the refrigerant outlet of condenser (2) and working medium pump (5), link to each other by condenser drain pipe (7), between the import of the outlet of working medium pump (5) and expansion valve (3), link to each other by working medium pump drain pipe (8), between the refrigerant inlet of the outlet of expansion valve (3) and evaporimeter (4), link to each other, between the air entry of the refrigerant outlet of evaporimeter (4) and refrigeration compressor (1), link to each other by refrigeration compressor air suction pipe (10) by evaporimeter feed tube (9).
2, device according to claim 1 is characterized in that the rotating speed of working medium pump (5) can be regulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200760033U CN201163118Y (en) | 2008-01-03 | 2008-01-03 | Novel refrigeration unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200760033U CN201163118Y (en) | 2008-01-03 | 2008-01-03 | Novel refrigeration unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201163118Y true CN201163118Y (en) | 2008-12-10 |
Family
ID=40184053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200760033U Expired - Fee Related CN201163118Y (en) | 2008-01-03 | 2008-01-03 | Novel refrigeration unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201163118Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360772A (en) * | 2019-08-19 | 2019-10-22 | 盛昌科技(深圳)有限公司 | A kind of water cooling refrigerating method and device and equipment |
| CN111366395A (en) * | 2020-03-08 | 2020-07-03 | 浙江大学 | Refrigeration device of ocean sampling active heat preservation compressor |
-
2008
- 2008-01-03 CN CNU2008200760033U patent/CN201163118Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360772A (en) * | 2019-08-19 | 2019-10-22 | 盛昌科技(深圳)有限公司 | A kind of water cooling refrigerating method and device and equipment |
| CN111366395A (en) * | 2020-03-08 | 2020-07-03 | 浙江大学 | Refrigeration device of ocean sampling active heat preservation compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081210 Termination date: 20120103 |