CN201463390U - Low-pressure stage air supplementary two-stage compression vapor refrigerating system - Google Patents
Low-pressure stage air supplementary two-stage compression vapor refrigerating system Download PDFInfo
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- CN201463390U CN201463390U CN200920098105XU CN200920098105U CN201463390U CN 201463390 U CN201463390 U CN 201463390U CN 200920098105X U CN200920098105X U CN 200920098105XU CN 200920098105 U CN200920098105 U CN 200920098105U CN 201463390 U CN201463390 U CN 201463390U
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Abstract
The utility model discloses a low-pressure stage air supplementary two-stage compression vapor refrigerating system, which aims to provide a refrigerating system capable of improving refrigerating capacity and input power of an existing refrigerating system and then enhancing COP of the system. An outlet of an evaporator is connected with a low-pressure vapor inlet of a low-pressure stage compressor; an outlet of the low-pressure stage compressor is connected with an inlet of a high-pressure stage compressor after being parallelly connected with a moderate-temperature refrigerant outlet of an intermediate cooler; an outlet of the high-pressure stage compressor is connected with an inlet of a condenser; one route of an outlet of the condenser is connected with an inlet of a coiled tube of the intermediate cooler; an outlet of the coiled tube of the intermediate cooler is connected with a super-cooled liquid inlet of a flash evaporator; an air outlet of the flash evaporator is connected with an air supplement opening of the low-pressure stage compressor through a first electronic expansion valve; a liquid outlet of the flash evaporator is connected with an inlet of the evaporator through a second electronic expansion valve; and the other route of the outlet of the condenser is connected with a box body joint of the intermediate cooler through a throttling valve. The system can meet the demand of low temperature and achieve the purpose of saving energy.
Description
Technical field
The utility model relates to a kind of refrigeration system, in particular, relates to a kind of two stages of compression steam formula refrigeration system of low-pressure stage tonifying Qi.
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.
The utility model content
The utility model 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 is provided, and, the increase rate of refrigerating capacity is greater than the increase rate of power, thereby improve the COP of system, the two stages of compression steam formula refrigeration system of the low-pressure stage tonifying Qi that cuts down the consumption of energy.
The utility model is achieved through the following technical solutions:
A kind of two stages of compression steam formula refrigeration system of low-pressure stage tonifying Qi, 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 low-pressure steam 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 one tunnel of condenser is connected with the import of intercooler coil, the outlet of intercooler coil is connected with the subcooled liquid import of flash vessel, the gas vent of flash vessel is connected with the gas supplementing opening of low-pressure stage compressor by first electric expansion valve, the liquid outlet of flash vessel is connected with the import of evaporimeter by second electric expansion valve, and another road of the outlet of condenser is connected with the casing interface of intercooler by choke valve.
The utlity model has following technique effect:
1, refrigeration system of the present utility model is beaten mouth and is carried out tonifying Qi in the middle of the low-pressure stage compressor, increased the air compensating system that is made of flash vessel at the low pressure compression section.Obtained fully crossing cold saturated gas by what flash vessel came out, its temperature is starkly lower than the temperature of low-pressure stage compressor air suction implication body, after two strands of gases mix, temperature obviously reduces, thereby reduced the delivery temperature of low-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 utility model adopts flash vessel mouth throttle system, can effectively improve compression process.
Description of drawings
Fig. 1 is the schematic diagram of the two stages of compression steam formula refrigeration system of the utility model low-pressure stage tonifying Qi.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in detail.
Fig. 1 is the schematic diagram of the two stages of compression steam formula refrigeration system of the utility model low-pressure stage tonifying Qi, 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 low-pressure steam 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 one tunnel of condenser 3 is connected with the import of intercooler coil, the outlet of intercooler coil 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 low-pressure stage compressor by first electric expansion valve 6, the liquid outlet of flash vessel 5 is connected with the import of evaporimeter 8 by second electric expansion valve 7, and another road of the outlet of condenser 3 is connected with the casing interface of intercooler 4 by choke valve 9.
The low-pressure steam that evaporimeter 8 produces is at first sucked by low-pressure stage compressor 1, and after obtaining of being come out by flash vessel 5 fully crossed cold saturated gas and mixed, temperature obviously reduced, thereby has reduced the delivery temperature of low-pressure stage compressor.The lower medium temperature and medium pressure gas of the temperature of discharging from low-pressure stage compressor 1 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 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, the subcooled liquid that comes out from middle coil pipe in cooler enters flash vessel 5, in flash vessel 5, the cold-producing medium that is evaporated to gaseous state enters low-pressure stage compressor 1 from low-pressure stage compressor gas supplementing opening and finishes the tonifying Qi process after the first electric expansion valve throttling.Another road choke valve 9 of flowing through enters in the intercooler casing, and the liquid after the throttling evaporates in intercooler 4 casings.The abundant cold excessively high pressure liquid refrigerant of the quilt of flash vessel 5 lower ends enters evaporimeter 8 again through the liquid refrigerant of second electric expansion valve 7 throttling step-downs the becoming low-temp low-pressure.The carrying out that circulation goes round and begins again like this.Because the low-pressure steam that evaporimeter produces after fully the cold saturated gas of mistake mixed with obtaining of being come out by flash vessel 5, has reduced the delivery temperature of low-pressure stage compressor in the low-pressure stage compressor, can effectively improve the refrigerating capacity of refrigeration system.
Refrigeration system of the present utility model is compared with common two stages of compression, has increased a tonifying Qi circuit cycle in low-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 the disclosed two stages of compression steam formula refrigeration system that relates to a kind of low-pressure stage tonifying Qi has been carried out special description with reference to embodiment, embodiment described above is illustrative and not restrictive, under the situation that does not break away from spirit and scope of the present utility model, all variations and modification are all within scope of the present utility model.
Claims (1)
1. the two stages of compression steam formula refrigeration system of a low-pressure stage tonifying Qi, 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 low-pressure steam 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 one tunnel of condenser is connected with the import of intercooler coil, the outlet of intercooler coil is connected with the subcooled liquid import of flash vessel, the gas vent of flash vessel is connected with the gas supplementing opening of low-pressure stage compressor by first electric expansion valve, the liquid outlet of flash vessel is connected with the import of evaporimeter by second electric expansion valve, and another road of the outlet of condenser is connected with the casing interface of intercooler by choke valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920098105XU CN201463390U (en) | 2009-07-30 | 2009-07-30 | Low-pressure stage air supplementary two-stage compression vapor refrigerating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920098105XU CN201463390U (en) | 2009-07-30 | 2009-07-30 | Low-pressure stage air supplementary two-stage compression vapor refrigerating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201463390U true CN201463390U (en) | 2010-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920098105XU Expired - Fee Related CN201463390U (en) | 2009-07-30 | 2009-07-30 | Low-pressure stage air supplementary two-stage compression vapor refrigerating system |
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| CN (1) | CN201463390U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022851A (en) * | 2010-12-22 | 2011-04-20 | 天津商业大学 | Two-stage compression refrigerating system |
| CN102032725A (en) * | 2010-12-08 | 2011-04-27 | 海尔集团公司 | Supercooling device, air conditioner with device and method for controlling refrigerant flow of air conditioner |
-
2009
- 2009-07-30 CN CN200920098105XU patent/CN201463390U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032725A (en) * | 2010-12-08 | 2011-04-27 | 海尔集团公司 | Supercooling device, air conditioner with device and method for controlling refrigerant flow of air conditioner |
| CN102022851A (en) * | 2010-12-22 | 2011-04-20 | 天津商业大学 | Two-stage compression refrigerating system |
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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: 20100512 Termination date: 20120730 |