CN101625171A - High pressure level gas supplementing quasi-tertiary vapor compression type refrigerating system - Google Patents
High pressure level gas supplementing quasi-tertiary vapor compression type refrigerating system Download PDFInfo
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- CN101625171A CN101625171A CN200910069959A CN200910069959A CN101625171A CN 101625171 A CN101625171 A CN 101625171A CN 200910069959 A CN200910069959 A CN 200910069959A CN 200910069959 A CN200910069959 A CN 200910069959A CN 101625171 A CN101625171 A CN 101625171A
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Abstract
The invention discloses a high pressure level gas supplementing quasi-tertiary vapor compression type refrigerating system, aiming at providing a refrigerating system which can enhance the refrigerating capacity and input power of the refrigerating system so as to improve COP of the system. The outlet of a vaporizer is connected with the inlet of a low pressure level compressor, the outlet of the low pressure level compressor is in paralleled connection with the intermediate temperature refrigerant outlet of an intermediate cooler followed by being connected with the inlet of a high pressure level compressor, the outlet of the high pressure level compressor is connected with the inlet of a condenser, outlet of the condenser is connected with the supercooling liquid inlet of a flash evaporator, the gas outlet of the flash evaporator is connected with the make-up gas opening of a high pressure level compressor through an electronic expansion valve, one path of the supercooling liquid outlet of the flash evaporator is connected with inlet of an intermediate cooling coil, the outlet of the intermediate cooling coil is connected with the inlet of the vaporizer through a second throttle, and the other path of the supercooling liquid outlet of flash evaporator is connected with the box body port of the intermediate cooler through a first throttle. The invention can meet the requirement of low temperature and realize the aim of energy saving.
Description
Technical field
The present invention relates to a kind of refrigeration system, in particular, relate to a kind of high pressure level gas supplementing quasi-tertiary vapor compression type refrigerating system.
Background technology
Refrigeration system is the operation of the hottest period in 1 year generally, and environment temperature is high more, and system's pressure reduction, Energy Efficiency Ratio are low more, so the operational factor of system is with variation of ambient temperature, and the refrigerating capacity of requirement also changes.
At present, general refrigeration system is common two-stage vapor compression type refrigerating system, when summer operation, because outdoor temperature temperature is higher, cause system's pressure reduction bigger, refrigerating capacity is descended, and compressor power consumption is excessive, requires can't satisfy the demands under the bigger situation in, refrigerating capacity lower to the environment temperature requirement.
Summary of the invention
The present invention is in order to overcome weak point of the prior art, a kind of refrigerating capacity and input power that can effectively improve refrigeration system to be provided, thereby improves the COP of system, the high pressure level gas supplementing quasi-tertiary vapor compression type refrigerating system that cuts down the consumption of energy.
The present invention is achieved through the following technical solutions:
A kind of high pressure level gas supplementing quasi-tertiary vapor compression type refrigerating system, it is characterized in that, comprise the low-pressure stage compressor, condenser, evaporimeter, the hiigh pressure stage compressor, intercooler, flash vessel, the outlet of evaporimeter is connected with the import of low-pressure stage compressor, be connected with the import of hiigh pressure stage compressor after the middle temperature refrigerant outlet parallel connection of the outlet of low-pressure stage compressor and intercooler, the outlet of hiigh pressure stage compressor is connected with the import of condenser, the outlet of condenser is connected with the subcooled liquid import of flash vessel, the gas vent of flash vessel is connected by the gas supplementing opening of electric expansion valve with the hiigh pressure stage compressor, the subcooled liquid of flash vessel exports one the tunnel and is connected with the import of intercooler coil, the outlet of intercooler coil is connected with the import of evaporimeter by second choke valve, and the subcooled liquid of flash vessel exports another road and is connected with the casing import of intercooler by the first throttle valve.
The present invention has following technique effect:
1, refrigeration system of the present invention is beaten mouth and is carried out tonifying Qi in the middle of the hiigh pressure stage compressor, partly increased the air compensating system that is made of flash vessel in high pressure compressed.Obtain cold fully excessively saturated gas by what flash vessel came out, its temperature is starkly lower than the temperature of hiigh pressure stage compressor air suction implication body, after two strands of gases mix, temperature obviously reduces, thereby reduced the delivery temperature of hiigh pressure stage compressor, can effectively improve the refrigerating capacity and the input power of refrigeration system, make environment temperature reach lower level, satisfy requirement of low temperature.And the increase rate of refrigerating capacity is greater than the increase rate of power, thereby the COP of raising system cuts down the consumption of energy, and reaches purpose of energy saving.
2, refrigeration system of the present invention adopts flash vessel mouth throttle system, can effectively improve compression process.
Description of drawings
Fig. 1 is the schematic diagram of high pressure level gas supplementing quasi-tertiary vapor compression type refrigerating system of the present invention.
The specific embodiment
Below in conjunction with the drawings and specific embodiments to the detailed description of the invention.
Fig. 1 is the schematic diagram of high pressure level gas supplementing quasi-tertiary vapor compression type refrigerating system of the present invention, comprise low-pressure stage compressor 1, condenser 3, evaporimeter 8, hiigh pressure stage compressor 2, intercooler 4, flash vessel 5, the outlet of evaporimeter 8 is connected with the import of low-pressure stage compressor 1, be connected with the import of hiigh pressure stage compressor 2 after the middle temperature refrigerant outlet parallel connection of the outlet of low-pressure stage compressor 1 and intercooler 4, the outlet of hiigh pressure stage compressor 2 is connected with the import of condenser 3, the outlet of condenser 3 is connected with the subcooled liquid import of flash vessel 5, the gas vent of flash vessel 5 is connected with the gas supplementing opening of hiigh pressure stage compressor by electric expansion valve 7, the subcooled liquid of flash vessel 5 exports one the tunnel and is connected with the import of intercooler 4 coil pipes, the outlet of intercooler coil is connected with the import of evaporimeter 8 by second choke valve 6, and the subcooled liquid of flash vessel 5 exports another road and is connected with the casing import of intercooler 4 by first throttle valve 9.
The low-pressure steam that evaporimeter 8 produces is at first sucked by low-pressure stage compressor 1, the lower medium temperature and medium pressure cold-producing medium of the temperature of discharging from low pressure compressor with come out from middle cooler 4 enter hiigh pressure stage compressor 2 after the warm refrigerant mixed, the high temperature high pressure liquid of discharging from hiigh pressure stage compressor 2 enters condenser 3 and is condensed into liquid, the liquid that comes out from condenser 3 enters flash vessel 5, and the cold-producing medium that is evaporated to saturated gaseous state in flash vessel 5 enters hiigh pressure stage compressor 2 from the gas supplementing opening of hiigh pressure stage compressor and finishes the tonifying Qi process after the electric expansion valve throttling.The cold fully excessively high pressure liquid refrigerant that obtains of discharging from flash vessel 5 lower ends is divided into two-way, one road intercooler 4 inner coil pipes of flowing through, in coil pipe, evaporated and be cooled (cold excessively) by the liquid outside the coil pipe, be the low temperature liquid cold-producing medium through the 6 throttling step-downs of second choke valve then, enter evaporimeter 8 again.Another road of cold fully excessively high pressure liquid refrigerant first throttle valve 9 of flowing through that obtains of discharging from flash vessel 5 lower ends enters in the intercooler casing, and the liquid after the throttling evaporates in intercooler 4 casings.The carrying out that circulation goes round and begins again like this.Owing to enter gas and gas mixing in the hiigh pressure stage compressor through electric expansion valve by gas supplementing opening from entering the hiigh pressure stage compressor after low-pressure stage compressor and intercooler mix by the cold-producing medium that is evaporated to saturated gaseous state in the flash vessel 5, reduce the delivery temperature of hiigh pressure stage compressor, can effectively improve the refrigerating capacity of refrigeration system.
Refrigeration system of the present invention is compared with common two stages of compression, has increased a tonifying Qi circuit cycle at high-pressure section, forms accurate three grades of compression refrigerating systems with original two stages of compression, can improve the refrigerating capacity of system, thereby increases the COP of system.
Although relate to a kind of high pressure level gas supplementing quasi-tertiary vapor compression type refrigerating system and carried out special description disclosed with reference to embodiment, embodiment described above is illustrative and not restrictive, under the situation that does not break away from the spirit and scope of the present invention, all variations and modification are all within the scope of the present invention.
Claims (1)
1, a kind of high pressure level gas supplementing quasi-tertiary vapor compression type refrigerating system, it is characterized in that, comprise the low-pressure stage compressor, condenser, evaporimeter, the hiigh pressure stage compressor, intercooler, flash vessel, the outlet of evaporimeter is connected with the import of low-pressure stage compressor, be connected with the import of hiigh pressure stage compressor after the middle temperature refrigerant outlet parallel connection of the outlet of low-pressure stage compressor and intercooler, the outlet of hiigh pressure stage compressor is connected with the import of condenser, the outlet of condenser is connected with the subcooled liquid import of flash vessel, the gas vent of flash vessel is connected by the gas supplementing opening of electric expansion valve with the hiigh pressure stage compressor, the subcooled liquid of flash vessel exports one the tunnel and is connected with the import of intercooler coil, the outlet of intercooler coil is connected with the import of evaporimeter by second choke valve, and the subcooled liquid of flash vessel exports another road and is connected with the casing import of intercooler by the first throttle valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910069959A CN101625171A (en) | 2009-07-30 | 2009-07-30 | High pressure level gas supplementing quasi-tertiary vapor compression type refrigerating system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910069959A CN101625171A (en) | 2009-07-30 | 2009-07-30 | High pressure level gas supplementing quasi-tertiary vapor compression type refrigerating system |
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| CN101625171A true CN101625171A (en) | 2010-01-13 |
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| CN200910069959A Pending CN101625171A (en) | 2009-07-30 | 2009-07-30 | High pressure level gas supplementing quasi-tertiary vapor compression type refrigerating system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878732A (en) * | 2012-09-28 | 2013-01-16 | 美意(浙江)空调设备有限公司 | Refrigerating cycle system with economizer |
| CN103912496A (en) * | 2014-03-28 | 2014-07-09 | 西安庆安制冷设备股份有限公司 | Double-rotor double-stage compressor and refrigerating/heating system thereof |
| CN103968477A (en) * | 2013-02-01 | 2014-08-06 | 珠海格力电器股份有限公司 | Air conditioner |
| CN106642786A (en) * | 2016-11-24 | 2017-05-10 | 松下冷机系统（大连）有限公司 | Carbon dioxide refrigerating cycle system adopting intermediate pressure for supplying liquid |
| CN107255309A (en) * | 2017-06-30 | 2017-10-17 | 美的集团武汉制冷设备有限公司 | Air-conditioning system, control method and computer-readable recording medium |
| CN107843020A (en) * | 2017-12-08 | 2018-03-27 | 天津商业大学 | A kind of Trans-critical cycle CO2Two-stage Compression is pressurized refrigeration system |
| CN112524832A (en) * | 2020-12-23 | 2021-03-19 | 浙江工业大学 | Novel air-conditioning refrigeration system adopting carbon dioxide for refrigeration |
| CN114131371A (en) * | 2021-12-02 | 2022-03-04 | 大连理工大学 | Ice clamping system based on split type compression refrigeration |
-
2009
- 2009-07-30 CN CN200910069959A patent/CN101625171A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878732A (en) * | 2012-09-28 | 2013-01-16 | 美意(浙江)空调设备有限公司 | Refrigerating cycle system with economizer |
| CN103968477A (en) * | 2013-02-01 | 2014-08-06 | 珠海格力电器股份有限公司 | Air conditioner |
| CN103968477B (en) * | 2013-02-01 | 2017-04-12 | 珠海格力电器股份有限公司 | Air conditioner |
| CN103912496A (en) * | 2014-03-28 | 2014-07-09 | 西安庆安制冷设备股份有限公司 | Double-rotor double-stage compressor and refrigerating/heating system thereof |
| CN106642786A (en) * | 2016-11-24 | 2017-05-10 | 松下冷机系统（大连）有限公司 | Carbon dioxide refrigerating cycle system adopting intermediate pressure for supplying liquid |
| CN107255309A (en) * | 2017-06-30 | 2017-10-17 | 美的集团武汉制冷设备有限公司 | Air-conditioning system, control method and computer-readable recording medium |
| CN107255309B (en) * | 2017-06-30 | 2020-06-23 | 美的集团武汉制冷设备有限公司 | Air conditioning system, control method, and computer-readable storage medium |
| CN107843020A (en) * | 2017-12-08 | 2018-03-27 | 天津商业大学 | A kind of Trans-critical cycle CO2Two-stage Compression is pressurized refrigeration system |
| CN112524832A (en) * | 2020-12-23 | 2021-03-19 | 浙江工业大学 | Novel air-conditioning refrigeration system adopting carbon dioxide for refrigeration |
| CN114131371A (en) * | 2021-12-02 | 2022-03-04 | 大连理工大学 | Ice clamping system based on split type compression refrigeration |
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Open date: 20100113 |