CN202452756U - CO2 air source double-stage compression heat pump machine unit - Google Patents
CO2 air source double-stage compression heat pump machine unit Download PDFInfo
- Publication number
- CN202452756U CN202452756U CN2012200685880U CN201220068588U CN202452756U CN 202452756 U CN202452756 U CN 202452756U CN 2012200685880 U CN2012200685880 U CN 2012200685880U CN 201220068588 U CN201220068588 U CN 201220068588U CN 202452756 U CN202452756 U CN 202452756U
- Authority
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- China
- Prior art keywords
- air source
- pressure side
- gas cooler
- low
- side compressor
- Prior art date
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- Expired - Lifetime
Links
- 230000006835 compression Effects 0.000 title abstract description 6
- 238000007906 compression Methods 0.000 title abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract 2
- 239000003570 air Substances 0.000 description 11
- 238000010438 heat treatment Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The utility model provides a CO2 air source double-stage compression heat pump machine unit, which comprises a low-pressure side compressor, a gas cooler, a throttling valve, an evaporator and a liquid storage tank and is characterized by also comprising a high-pressure side compressor and a middle cooler, wherein the low-pressure side compressor, the high-pressure side compressor, the gas cooler, the middle cooler, the throttling valve, the evaporator and the liquid storage tank are sequentially connected into a sealed circulation loop through pipelines, and the high-pressure side compressor, the gas cooler, the middle cooler and a bypass loop pipe are in short circuit connection for forming the other sealed circulation bypass loop. The CO2 air source double-stage compression heat pump machine unit has the characteristics that the structure is simple, and the heat supply effect is good.
Description
Technical field
The utility model relates to technical field of heat pumps, particularly belongs to a kind of twin-stage compressing hot pump group field.
Background technology
Air source heat pump is because of drawing abundant low-grade energy from ambient air, easy to use, mounting cost is lower, so air source heat pump becomes in the heat pump product a kind of of extensive use the most.But the range of application of conventional air source heat pump receives the constraint of environmental factor, along with the reduction of outdoor temperature; User's calorific requirement constantly increases, and when outside air temperature was low, the problem that heat is difficult to satisfy the user heating demand appearred in unit; Simultaneously; Because air source heat pump single-stage compression cycle efficient under worst cold case is low,, proposed twin-stage compressing hot pump unit and improved and stride the in service of critical cycle to the limitation that conventional air source heat pump uses in low temperature environment; Restriction loss in the minimizing system improves the coefficient of performance.
The present invention is intended to overcome the prior art deficiency, and single stage compress efficient is low, proposes a kind of high pressure and low pressure contraction heat and realizes a kind of novel twin-stage compressible drive heat pump circulating device, to realize more energy-conservation, as to be more suitable for heat supply under worst cold case effect.
The utility model content
The technical problem that the utility model will solve is to overcome existing defective, and a kind of simple in structure, CO that heating effect is good is provided
2Air source twin-stage compressing hot pump unit.
In order to solve the problems of the technologies described above, the utility model provides following technical scheme:
CO
2Air source twin-stage compressing hot pump unit; Comprise low-pressure side compressor, gas cooler, choke valve, evaporimeter, receiver; It is characterized in that; Also comprise high side compressors and intercooler; Said low-pressure side compressor, high side compressors, gas cooler, intercooler, choke valve, evaporimeter, receiver connect into a closed circulation loop through pipeline successively, said high side compressors, gas cooler, intercooler with the bypass circulation pipe mutually short circuit be connected to form another closed circulation bypass circulation.
Said low-pressure side compressor and high side compressors are DC frequency-changeable compressor.
The two structure of said gas cooler and intercooler is identical.
Compared with prior art, the utlity model has following beneficial effect:
The utility model is simple in structure; Heat energy efficiency is good, can effectively improve energy transformation ratio, than single-stage CO
2Stride critical compression and improve the efficient 25% or more, and under-30 ℃ of worst cold cases during 60 ℃ of leaving water temperatures, Energy Efficiency Ratio 3.5, the heat supply in winter of realization northern frore area provides thermal source.
Description of drawings
Fig. 1 is the utility model CO
2The structural representation of air source twin-stage compressing hot pump unit.
The specific embodiment
Describe below in conjunction with the preferred embodiment of accompanying drawing, should be appreciated that preferred embodiment described herein only is used for explanation and explains the utility model, and be not used in qualification the utility model the utility model.
As shown in Figure 1, CO
2Air source twin-stage compressing hot pump unit; Comprise low-pressure side compressor 1, high side compressors 2, gas cooler 3, intercooler 4, choke valve 5, evaporimeter 7 and receiver 8; Said low-pressure side compressor 1, high side compressors 2, gas cooler 3, intercooler 4, choke valve 5, evaporimeter 7 and receiver 8 connect into a closed circulation loop through pipeline successively, and low-pressure side compressor 1 is a DC frequency-changeable compressor with high side compressors 2; Gas cooler 3 is identical with intercooler 4 the two structure.Said high side compressors 2, gas cooler 3, intercooler 4 and bypass circulation pipe 6 short circuit mutually are connected to form another closed circulation loop.Above-mentioned closed circulation is equipped with refrigerant CO in the loop
2 Bypass circulation pipe 6 has increased solution refrigerant CO when environment temperature is low
2Internal circulating load.
CO
2Special Compressor is high pressure, 2 supercritical COs of low pressure
2The two air inlet body coolers of gas, after cooling off simultaneously, low-pressure side compressor CO
2Gas is without the throttling step-down and get into high pressure compressor upgrading (secondary pressurization), reaches the reduction delivery temperature, is more suitable for low evaporating temperature, reduces restriction loss, the purpose of raising the efficiency.
The utility model provides a kind of CO with natural medium
2Be used and carry out twin-stage compressing hot pump heating system, owing to 2 compressors, gas cooler, choke valve, evaporimeter are formed sealing and high pressure resistant loop, than single-stage CO
2Stride critical compression and improve the efficient more than 25%; Under worst cold case, improve the thermal efficiency, during 60 ℃ of leaving water temperatures, Energy Efficiency Ratio reaches more than 3.5, realizes that northern frore area heat supply in winter provides thermal source (heating, hot water) under-30 ℃ of worst cold cases.
The above is merely the embodiment of explanation the utility model; Be not limited to the utility model; For a person skilled in the art; All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (3)
1.CO
2Air source twin-stage compressing hot pump unit; Comprise low-pressure side compressor, gas cooler, choke valve, evaporimeter, receiver; It is characterized in that; Also comprise high side compressors and intercooler; Said low-pressure side compressor, high side compressors, gas cooler, intercooler, choke valve, evaporimeter, receiver connect into a closed circulation loop through pipeline successively, and said high side compressors, gas cooler, intercooler and bypass circulation pipe short circuit mutually are connected to form another closed circulation bypass circulation.
2. CO according to claim 1
2Air source twin-stage compressing hot pump unit is characterized in that: said low-pressure side compressor and high side compressors are DC frequency-changeable compressor.
3. CO according to claim 1
2Air source twin-stage compressing hot pump unit, it is characterized in that: the two structure of said gas cooler and intercooler is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200685880U CN202452756U (en) | 2012-02-28 | 2012-02-28 | CO2 air source double-stage compression heat pump machine unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200685880U CN202452756U (en) | 2012-02-28 | 2012-02-28 | CO2 air source double-stage compression heat pump machine unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202452756U true CN202452756U (en) | 2012-09-26 |
Family
ID=46868617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200685880U Expired - Lifetime CN202452756U (en) | 2012-02-28 | 2012-02-28 | CO2 air source double-stage compression heat pump machine unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202452756U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020052123A1 (en) * | 2018-09-11 | 2020-03-19 | 西安交通大学 | Precooler-based transcritical co2 heat pump system and water path two-way valve control method therefor |
| CN113063274A (en) * | 2019-12-13 | 2021-07-02 | 西南科技大学 | An air source heat pump high temperature drying and disinfection cabinet |
| CN114857696A (en) * | 2022-06-02 | 2022-08-05 | 新科环保科技有限公司 | Magnetic suspension centrifugal air conditioning system |
| CN114992897A (en) * | 2022-05-07 | 2022-09-02 | 松下压缩机(大连)有限公司 | CO 2 Transcritical two-stage compression type air source heat pump system |
-
2012
- 2012-02-28 CN CN2012200685880U patent/CN202452756U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020052123A1 (en) * | 2018-09-11 | 2020-03-19 | 西安交通大学 | Precooler-based transcritical co2 heat pump system and water path two-way valve control method therefor |
| US11927379B2 (en) | 2018-09-11 | 2024-03-12 | Xi'an Jiaotong University | Precooler-based transcritical CO2 heat pump system and control method of waterway two-way valve thereof |
| CN113063274A (en) * | 2019-12-13 | 2021-07-02 | 西南科技大学 | An air source heat pump high temperature drying and disinfection cabinet |
| CN114992897A (en) * | 2022-05-07 | 2022-09-02 | 松下压缩机(大连)有限公司 | CO 2 Transcritical two-stage compression type air source heat pump system |
| CN114992897B (en) * | 2022-05-07 | 2024-03-26 | 冰山松洋压缩机(大连)有限公司 | CO 2 Transcritical two-stage compression type air source heat pump system |
| CN114857696A (en) * | 2022-06-02 | 2022-08-05 | 新科环保科技有限公司 | Magnetic suspension centrifugal air conditioning system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: CO2 air source two-stage compression heat pump unit Effective date of registration: 20140717 Granted publication date: 20120926 Pledgee: Gansu provincial cultural industry investment and financing Company limited by guarantee Pledgor: Gansu Yide Energy-saving Environmental Protection Co., Ltd. Registration number: 2014620000004 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20160229 Granted publication date: 20120926 Pledgee: Gansu provincial cultural industry investment and financing Company limited by guarantee Pledgor: Gansu Yide Energy-saving Environmental Protection Co., Ltd. Registration number: 2014620000004 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: CO[sub]2[/sub] air source two-stage compression heat pump unit Effective date of registration: 20160309 Granted publication date: 20120926 Pledgee: Gansu provincial cultural industry investment and financing Company limited by guarantee Pledgor: Gansu Yide Energy-saving Environmental Protection Co., Ltd. Registration number: 2016620000006 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20170614 Granted publication date: 20120926 Pledgee: Gansu provincial cultural industry investment and financing Company limited by guarantee Pledgor: Gansu Yide Energy-saving Environmental Protection Co., Ltd. Registration number: 2016620000006 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120926 |