CN201583075U - Air-cooled heat pump unit with defrosting functions - Google Patents
Air-cooled heat pump unit with defrosting functions Download PDFInfo
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- CN201583075U CN201583075U CN2010200613366U CN201020061336U CN201583075U CN 201583075 U CN201583075 U CN 201583075U CN 2010200613366 U CN2010200613366 U CN 2010200613366U CN 201020061336 U CN201020061336 U CN 201020061336U CN 201583075 U CN201583075 U CN 201583075U
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Abstract
The utility model discloses an air-cooled heat pump unit with defrosting functions, which comprises a pressure regulating device connected to the low-pressure end of an expansion valve. In heating circulation of the air-cooled heat pump unit, when pressure of the low-pressure end of the expansion valve is lower than 0.25MPa, and the pressure regulating device can control the pressure of the low-pressure end of the expansion valve between 0.25MPa and 0.3MPa. Compared with the prior art, the air-cooled heat pump unit adopts a new defrosting method, namely adopts liquid refrigerant to defrost, dose not need a four-way valve to reverse, has low influence on heating capacity and fine defrosting effect, dose not consume energy basically and is simple and reliable in control.
Description
Technical field
The utility model relates to a kind of Air-Cooled Heat Pump Unit.
Background technology
Air-Cooled Heat Pump Unit is as Cooling and Heat Source at present.Can do cold, hot two-purpose, owing to its efficient height, less energy consumption, pollution have obtained using widely less.
But from practical application, Air-Cooled Heat Pump Unit is not ideal at the heating operation in the higher area of relative humidity, area, the middle and lower reach of Yangtze River as China, when outside air temperature is lower than 3 ℃, off-premises station (outdoor interchanger, heating circulation time is evaporimeter) meeting frosting, the heat transfer resistance that causes freezing between matchmaker and the air can increase, evaporimeter heat exchange amount is little, and frost layer stops up a heat exchanger fin (fin) easily and cause ventilating relatively poor, and these all can have a strong impact on heating effect.
Existing Defrost method mainly contains two kinds: a kind of is the cross valve commutation, and system reverse circulates and defrosts, and this Defrost method needs power consumption, and can influence heating effect; Another kind is a hot-gas bypass, and this method can not solve the problem of intelligent defrosting well, and bigger to the heating capacity influence when defrosting, when especially environment temperature is low.
Summary of the invention
For solving above-mentioned technical problem, the utility model provides a kind of Air-Cooled Heat Pump Unit, it mainly comprises cross valve, indoor heat converter, outdoor heat converter, vapour liquid separator, compressor, reservoir, expansion valve, wherein: described Air-Cooled Heat Pump Unit also comprises a pressure-regulating device, this device is connected the low-pressure end of described expansion valve, heating in the circulation of this Air-Cooled Heat Pump Unit, when the pressure of the low-pressure end of described expansion valve was lower than 0.25Mpa, described pressure-regulating device can be controlled at 0.25～0.3Mpa with the pressure of the low-pressure end of described expansion valve.
Adopt the Air-Cooled Heat Pump Unit of technique scheme, the setting value of pressure-regulating device is 0.25～0.3Mpa, and when unit operation heats circulation time, if the low-pressure end pressure of expansion valve on 0.25Mpa the time, is normal operation, pressure-regulating device is not worked; The pressure of low-pressure end that may cause expansion valve when environment temperature is low utilizes pressure-regulating device to make it to return to 0.25～0.3Mpa during less than 0.25Mpa.
The inventor finds through great deal of experimental, when environment temperature is low, heighten the pressure of the low-pressure end of expansion valve, especially specific when being arranged at 0.25～0.3Mpa, can suitably improve the temperature of inlet chamber outer heat-exchanger (evaporimeter) liquid (refrigerant), the low-pressure end energy of compensate for dilatation valve suitably in other words, device frosting or defrosting can avoid evaporating.
Air-Cooled Heat Pump Unit of the present utility model can be suitable for the environment operation down that outside air temperature is not less than-15 ℃.Preferably, be suitable for area like area, the Chinese middle and lower reach of Yangtze River or the humidity temperature classes.
Preferably, the delivery outlet of described compressor is connected with described cross valve, the input port of described compressor is connected with described cross valve through described vapour liquid separator, two other interface of described cross valve is respectively by tracheae and indoor heat converter, one port of outdoor heat converter connects, the another port of described outdoor heat converter is connected with the first liquid pipe, and divide two-way by this first liquid pipe, one the tunnel through the first liquid check valve, expansion valve is connected with the liquid outlet of reservoir, another road second liquid is connected with the inlet of reservoir with check valve, the another port of described indoor heat converter is connected with the second liquid pipe, and divide two-way by this second liquid pipe, one the tunnel through the 3rd liquid check valve, expansion valve is connected with the liquid outlet of reservoir, another Lu Jingdi four liquid are connected with the inlet of reservoir with check valve, described pressure-regulating device comprises that an end is connected between the port that links to each other with this reservoir liquid outlet on described reservoir liquid outlet and the expansion valve, the other end is connected the bypass line on the described first liquid pipe, and this bypass line is provided with the capacity adjusting valve KVC that is communicated with the bypass line two ends.
Adopt the Air-Cooled Heat Pump Unit of this structure, promptly connect a bypass pipe road between the low-pressure end of expansion valve and high-pressure side one side, this bypass line is provided with capacity adjusting valve, and the setting value of capacity adjusting valve KVC is adjusted into 0.25～0.3Mpa; When unit operation heats circulation time, if the low-pressure end pressure of expansion valve is on 0.25Mpa the time, be normal operation, when closing the pressure of low-pressure end that capacity adjusting valve KVC may cause expansion valve when environment temperature is low less than 0.25Mpa, open capacity adjusting valve KVC, make the low-pressure end (entrance point that links to each other with the reservoir liquid outlet) of expansion valve communicate with the first liquid pipe (high-pressure side one side of expansion valve), suitably improve the pressure of compensate for dilatation valve low-pressure end in other words, make expansion valve low-pressure end pressure maintain setting value 0.25～0.3Mpa, device frosting or defrosting effectively avoid evaporating.
Preferably, described bypass line is provided with the magnetic valve of opening or closing described capacity adjusting valve KVC, and this magnetic valve is only opened when unit heats.
Air-Cooled Heat Pump Unit of the present utility model compared with prior art, has adopted a kind of new Defrost method, adopts liquid coolant defrosting, need not the cross valve commutation, and little to the heating capacity influence, defrosting effect is good; Basically need not consumes energy in addition, and control simple and reliable.
Description of drawings
Accompanying drawing 1 is the system schematic of the utility model Air-Cooled Heat Pump Unit;
1, cross valve; 2, outdoor heat converter; 3, indoor heat converter; 4, vapour liquid separator; 5, compressor; 6, reservoir; 7, expansion valve; 8, filter;
10, the first liquid pipe; 11, the first liquid check valve; 12, the second liquid check valve;
20, the second liquid pipe; 23, the 3rd liquid check valve; 24, the 4th liquid check valve;
41, low tension switch; 42, low-pressure meter; 43, needle-valve;
51, high-voltage switch gear; 52, high pressure gauge; 53, needle-valve;
9, bypass line; 91, capacity adjusting valve KVC; 92, magnetic valve.
The specific embodiment
Below in conjunction with drawings and Examples the utility model Air-Cooled Heat Pump Unit is specifically described.
Embodiment 1
As shown in Figure 1, a kind of Air-Cooled Heat Pump Unit, it mainly comprises cross valve 1, indoor heat converter 3, outdoor heat converter 2, vapour liquid separator 4, compressor 5, reservoir 6, expansion valve 7.
As shown in Figure 1, the delivery outlet of compressor 5 is connected by a tracheae path with cross valve 1 that (delivery outlet one side of compressor 5 is a high-pressure side, generally be provided with high-voltage switch gear 51, high pressure gauge 52 near this high-pressure side one side on the tracheae path, the place of close cross valve 1 is provided with needle-valve 53 on the tracheae path).The input port of compressor 5 is connected with cross valve 1 through vapour liquid separator 4 that (input port one side of compressor 5 is a low-pressure end, be connected with low tension switch 41, low-pressure meter 42 on the tracheae path between compressor 5 and the vapour liquid separator 4, be connected with needle-valve 43 between vapour liquid separator 4 and the cross valve 1).
Two other interface of cross valve 1 is connected by the port of tracheae with indoor heat converter 3, outdoor heat converter 2 respectively.
The another port of outdoor heat converter 2 is connected with the first liquid pipe 10, and by 10 fens two-way of this first liquid pipe, one the tunnel is connected with the liquid outlet of reservoir 6 with check valve 11, expansion valve 7 through first liquid, and another road second liquid usefulness check valve 12 is connected with the inlet of reservoir 6.
The another port of indoor heat converter 3 is connected with the second liquid pipe 20, and by 20 fens two-way of this second liquid pipe, one the tunnel is connected with the liquid outlet of reservoir 6 with check valve 23, expansion valve 7 through the 3rd liquid, and another Lu Jingdi four liquid usefulness check valve 24 is connected with the inlet of reservoir 6.
Be connected with filter 8 between the import of the liquid outlet of reservoir 6 and expansion valve 7 (low-pressure end).
Refrigeration work process roughly following (route shown in the filled arrows among ginseng Fig. 1): the gas coolant that produces HTHP by compressor 5, gas coolant is through cross valve 1 inlet chamber outer heat-exchanger 2 (condenser), be condensed into liquid coolant through heat exchange, liquid coolant enters the first liquid pipe 10, successively through second liquid check valve 12, reservoir 6, filter 8, expansion valve 7, the 3rd liquid enters in the second liquid pipe 20 with check valve 23, enter indoor heat converter 3 (evaporimeter) by the second liquid pipe 20 again, be evaporated to gas coolant through heat exchange, this gas coolant is discharged the back and is entered compressor 5 compressions through vapour liquid separator 4 again by cross valve 1 from indoor heat converter 3, become the cold media gas of HTHP again, so circulation.
Heat the course of work roughly following (route shown in ginseng Fig. 1 hollow core arrow): the liquid coolant in the reservoir 6 flows out from liquid outlet, through filter 8, expansion valve 7, first liquid enters the first liquid pipe 10 with check valve 11, inlet chamber outer heat-exchanger 2 (evaporimeter) from the first liquid pipe 10 again, be evaporated to gas coolant through heat exchange, gas coolant is discharged the back from outdoor heat converter 2 and is entered compressor 5 compressions through vapour liquid separator 4 again by cross valve 1, become the gas coolant of HTHP, gas coolant enters indoor heat converter 3 (condenser) by cross valve 1 again, be condensed into liquid coolant through heat exchange, liquid coolant enters the second liquid pipe 20, enters reservoir 6 through the 4th liquid with check valve 24.
This Air-Cooled Heat Pump Unit also comprises a bypass pipe road 9, one end of this bypass line is connected between reservoir 6 liquid outlets and the filter 8, the other end is connected on the first liquid pipe 10 and (is connected an end of close outdoor heat converter), and this bypass line 9 is provided with the capacity adjusting valve KVC 91 that is communicated with bypass line 9 two ends, the magnetic valve 92 that control capacity adjusting valve KVC 91 opens and closes.
Promptly connect a bypass pipe road 9 between the low-pressure end of expansion valve 7 and high-pressure side one side, the setting value of capacity adjusting valve KVC 91 is adjusted into 0.25～0.3Mpa; When unit operation heats circulation time,, close capacity adjusting valve KVC 91 if the low-pressure end pressure of expansion valve 7 on 0.25Mpa the time, is normal operation; The pressure of low-pressure end that may cause expansion valve 7 when environment temperature is low is during less than 0.25Mpa, open capacity adjusting valve KVC 91, make the low-pressure end (entrance point that links to each other with reservoir 6 liquid outlets) of expansion valve 7 communicate with the first liquid pipe 10 (high-pressure side one side of expansion valve 7), suitably improve the pressure of compensate for dilatation valve 7 low-pressure ends in other words, make expansion valve 7 low-pressure end pressure maintain setting value 0.25～0.3Mpa, device frosting or defrosting effectively avoid evaporating.
The Air-Cooled Heat Pump Unit of present embodiment be specially adapted to temperature be not less than-15 ℃, area, the Chinese middle and lower reach of Yangtze River.
Air-Cooled Heat Pump Unit of the present utility model is not limited to the above embodiments, and all equivalences of doing according to spiritual essence of the present utility model change or modify, and all should be encompassed in the protection domain of the present utility model.
Claims (3)
1. Air-Cooled Heat Pump Unit, it mainly comprises cross valve, indoor heat converter, outdoor heat converter, vapour liquid separator, compressor, reservoir, expansion valve, it is characterized in that: described Air-Cooled Heat Pump Unit also comprises a pressure-regulating device, this device is connected the low-pressure end of described expansion valve, heating in the circulation of this Air-Cooled Heat Pump Unit, when the pressure of the low-pressure end of described expansion valve was lower than 0.25Mpa, described pressure-regulating device can be controlled at 0.25～0.3Mpa with the pressure of the low-pressure end of described expansion valve.
2. Air-Cooled Heat Pump Unit as claimed in claim 1, it is characterized in that: the delivery outlet of described compressor is connected with described cross valve, the input port of described compressor is connected with described cross valve through described vapour liquid separator, two other interface of described cross valve is connected with a port of indoor heat converter, outdoor heat converter by tracheae respectively
The another port of described outdoor heat converter is connected with the first liquid pipe, and divides two-way by this first liquid pipe, and one the tunnel is connected with the liquid outlet of reservoir with check valve, expansion valve through first liquid, and another road second liquid usefulness check valve is connected with the inlet of reservoir,
The another port of described indoor heat converter is connected with the second liquid pipe, and divides two-way by this second liquid pipe, and one the tunnel is connected with the liquid outlet of reservoir with check valve, expansion valve through the 3rd liquid, and another Lu Jingdi four liquid usefulness check valve is connected with the inlet of reservoir,
Described pressure-regulating device comprises that an end is connected between the port that links to each other with this reservoir liquid outlet on described reservoir liquid outlet and the expansion valve, the other end is connected the bypass line on the described first liquid pipe, and this bypass line is provided with the capacity adjusting valve KVC that is communicated with the bypass line two ends.
3. Air-Cooled Heat Pump Unit as claimed in claim 2 is characterized in that: described bypass line is provided with the magnetic valve of opening or closing described capacity adjusting valve KVC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200613366U CN201583075U (en) | 2010-01-08 | 2010-01-08 | Air-cooled heat pump unit with defrosting functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200613366U CN201583075U (en) | 2010-01-08 | 2010-01-08 | Air-cooled heat pump unit with defrosting functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201583075U true CN201583075U (en) | 2010-09-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200613366U Expired - Fee Related CN201583075U (en) | 2010-01-08 | 2010-01-08 | Air-cooled heat pump unit with defrosting functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201583075U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105865082A (en) * | 2016-04-20 | 2016-08-17 | 河北炫坤节能科技股份有限公司 | Modular air-cooled cold and hot water anti-icing unit |
| CN109028461A (en) * | 2018-05-24 | 2018-12-18 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method |
-
2010
- 2010-01-08 CN CN2010200613366U patent/CN201583075U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105865082A (en) * | 2016-04-20 | 2016-08-17 | 河北炫坤节能科技股份有限公司 | Modular air-cooled cold and hot water anti-icing unit |
| CN109028461A (en) * | 2018-05-24 | 2018-12-18 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SUZHOU AIMFAR AIR CONDITIONING CO., LTD. Free format text: FORMER NAME: SUZHOU AIM FAR CONDITIONING INTERNATIONAL CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 215122, No. 2, new science and Technology City, Suzhou Industrial Park, Jiangsu, China Patentee after: Suzhou Sujing Aemfar Air Conditioning Co., Ltd. Address before: 215122, No. 2, new science and Technology City, Suzhou Industrial Park, Jiangsu, China Patentee before: Suzhou Aim Far Conditioning International Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100915 Termination date: 20170108 |