CN2271676Y - Air cooling heat pump of selecting good working state according to the external temp conditions - Google Patents
Air cooling heat pump of selecting good working state according to the external temp conditions Download PDFInfo
- Publication number
- CN2271676Y CN2271676Y CN 95242570 CN95242570U CN2271676Y CN 2271676 Y CN2271676 Y CN 2271676Y CN 95242570 CN95242570 CN 95242570 CN 95242570 U CN95242570 U CN 95242570U CN 2271676 Y CN2271676 Y CN 2271676Y
- Authority
- CN
- China
- Prior art keywords
- expansion valve
- heat pump
- air cooling
- state according
- cooling heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The utility model relates to an air cooling heat pump which selects good working state according to external temperature conditions. In the structure of the air cooling heat pump composed of a compressor, a condenser, an evaporator, a separator, an expansion valve, a corresponding pipeline system, etc., both ends of the expansion valve are connected in parallel with a throttling branch L1 provided with an auxiliary expansion valve which can switch according to environment temperature. When used to heat in winter, the utility model can well work under the standard condition, and can also select the proper on-off state of the auxiliary expansion valve according to the cold degree of the external environment; accordingly, the heat pump can work in different external environments with higher energy efficiency ratio.
Description
The utility model belong to heat, especially have concurrently heat, the aircondition field of refrigerating function.
The refrigerating capacity of the heat supply expansion valve of air-cooled heat pump unit generally is by standard condition (promptly
7 ℃) under refrigerating capacity select.Expansion valve is regulated refrigerating capacity automatically and is limited in scope, generally speaking, its operating temperature all is arranged on more than-2 ℃, that is to say ambient temperature more than-2 ℃ the time, expansion valve could and system matches, when environment temperature less than-2 ℃, selected expansion valve and system can not mate, its Energy Efficiency Ratio reduces, and when environment temperature is lower, does not even heat.The system architecture of this class air-cooled heat pump as described in Figure 1.Solve this shortcoming for improving, someone proposes some improvement projects (as " HVAC " 1995.5 phases), but it can not take into account standard condition (as the areas to the south, the Changjiang river) and two kinds of situations of low ambient temperature condition (as area to the north of the Changjiang river), makes the scope of application of its product be subjected to certain restriction.
The purpose of this utility model is a kind of air-cooled heat pump that can select the works fine state according to the ambient temperature condition of design, make it can overcome the above shortcoming of prior art, can can under the low temperature environment temperature, (as-2～-15 ℃) work cost-effectively again at standard condition.
The purpose of this utility model is to realize by following design.
In the air-cooled heat pump of forming by compressor, condenser, evaporimeter, separator, expansion valve and corresponding pipe-line system etc., the throttling branch road that can select the auxiliary expansion valve of folding according to environment temperature is housed in expansion valve two ends parallel connection one.
During design, the refrigerating capacity sum of auxiliary expansion valve and expansion valve two valves is the normal refrigerating capacity standard condition under, when in standard condition following time, assists expansion valve and expansion valve all to open, and the refrigerating capacity sum of this two valve and the selected ability to work of standard condition are complementary; (as below-2 ℃) will assist expansion valve to close when environment temperature is in low temperature, only use expansion valve work, and at this moment, increase falls in choke pressure, and it is big that the difference of operating temperature and environment temperature becomes, and Energy Efficiency Ratio is improved.
Description of drawings is as follows.
Fig. 1 is that existing air-cooled heat pump unit is provided with figure.
Fig. 2 is that the utility model air-cooled heat pump unit embodiment is provided with figure.
Fig. 3 is that the embodiment of the utility model increase quickly defrosting is provided with figure.
Below in conjunction with accompanying drawing the utility model is described in further detail.
In the drawings, 1 is compressor, and 2 is cross valve, and 3 is condenser, and 4 is liquid reservoir, and 5 is evaporimeter, and 6 is separator, and 7 is check valve, and 8 is throttle expansion valve, and 11 for being auxiliary throttle pipe.What Fig. 1 represented is the situation that is provided with of prior art, and its throttle expansion valve 8 is pressed the standard condition design, and when low temperature environment (such as less than-2 ℃) moves, system can not move by design conditions.
In Fig. 2, can see, the throttling branch road L1 that selects the auxiliary expansion valve 9 of folding according to environment temperature is housed in the two ends of expansion valve 8 parallel connection one, the range of flow of valve 8 and valve 9 generally is control like this: flow is 1 unit during as if standard condition, then valve 8 flows are about 0.6 unit, and valve 9 is about 0.4.When heating, valve 8 valves 9 are all opened at nominal situation (greater than-2 ℃); When low temperature environment is worked, shut off valve 9.
In addition, for making heat pump can obtain quickly defrosting, system layout can be become the structure of Fig. 3, assist the two ends parallel connection of expansion valve 9 and a defrosting branch road L2 that control magnetic valve 10 is housed is set on expansion valve 8 and throttling branch road, the flow of valve 10 is generally big about 5 times than valve 8.When heat pump moved under standard condition, magnetic valve 10 cut out; When outdoor condenser 3 needs defrosting, open magnetic valve 10, liquid supply rate sharply increases, at this moment, working medium temperature in the condenser will be higher than environment temperature, keep continuous heat supply to a certain extent in quickly defrosting, compare with other defrosting, fluctuations in indoor temperature is less, and energy is further saved.
Claims (2)
1, a kind of air-cooled heat pump that can select the works fine state according to the ambient temperature condition, form by compressor, condenser, evaporimeter, separator, expansion valve and corresponding pipe-line system etc., it is characterized in that, the throttling branch road L1 that can select the auxiliary expansion valve 9 of folding according to environment temperature is housed in expansion valve two ends parallel connection one.
2, the air-cooled heat pump that can select the works fine state according to the ambient temperature condition according to claim 1 is characterized in that the two ends of auxiliary expansion valve are arranged in parallel a defrosting branch road L2 that control magnetic valve 10 is housed on expansion valve and throttling branch road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95242570 CN2271676Y (en) | 1995-12-25 | 1995-12-25 | Air cooling heat pump of selecting good working state according to the external temp conditions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95242570 CN2271676Y (en) | 1995-12-25 | 1995-12-25 | Air cooling heat pump of selecting good working state according to the external temp conditions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2271676Y true CN2271676Y (en) | 1997-12-31 |
Family
ID=33883497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95242570 Expired - Fee Related CN2271676Y (en) | 1995-12-25 | 1995-12-25 | Air cooling heat pump of selecting good working state according to the external temp conditions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2271676Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101387455B (en) * | 2008-09-02 | 2012-10-31 | Tcl集团股份有限公司 | Parallel flow air conditioner and defrosting control method thereof |
| CN101603701B (en) * | 2008-06-13 | 2012-12-19 | Tcl集团股份有限公司 | Auxiliary heating method of air conditioner with auxiliary heating device |
| CN104075510A (en) * | 2013-03-27 | 2014-10-01 | 约克（无锡）空调冷冻设备有限公司 | Part heat recovery air conditioning unit and refrigerant control method thereof |
| CN104354565A (en) * | 2014-09-30 | 2015-02-18 | 国家电网公司 | Device for supplying power to air conditioner of vehicle during running or parking by using multiple power supplies |
-
1995
- 1995-12-25 CN CN 95242570 patent/CN2271676Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101603701B (en) * | 2008-06-13 | 2012-12-19 | Tcl集团股份有限公司 | Auxiliary heating method of air conditioner with auxiliary heating device |
| CN101387455B (en) * | 2008-09-02 | 2012-10-31 | Tcl集团股份有限公司 | Parallel flow air conditioner and defrosting control method thereof |
| CN104075510A (en) * | 2013-03-27 | 2014-10-01 | 约克（无锡）空调冷冻设备有限公司 | Part heat recovery air conditioning unit and refrigerant control method thereof |
| CN104075510B (en) * | 2013-03-27 | 2016-11-09 | 约克（无锡）空调冷冻设备有限公司 | Part heat recovery air conditioner unit and refrigerant control method thereof |
| CN104354565A (en) * | 2014-09-30 | 2015-02-18 | 国家电网公司 | Device for supplying power to air conditioner of vehicle during running or parking by using multiple power supplies |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |