CN201680647U - Wide-temperature-range high-efficient air source heat pump unit with anti-frosting function - Google Patents
Wide-temperature-range high-efficient air source heat pump unit with anti-frosting function Download PDFInfo
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- CN201680647U CN201680647U CN2010201629639U CN201020162963U CN201680647U CN 201680647 U CN201680647 U CN 201680647U CN 2010201629639 U CN2010201629639 U CN 2010201629639U CN 201020162963 U CN201020162963 U CN 201020162963U CN 201680647 U CN201680647 U CN 201680647U
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Abstract
The utility model relates to an air source heat pump unit. A compressor is communicated with an indoor heat exchanger through a first switch valve and a four-way reversing valve, the indoor heat exchanger is connected with a bidirectional liquid storage device through a first one-way valve, one channel of the bidirectional liquid storage device is connected with the compressor through an anti-frosting coil pipe, a third throttling valve, an outdoor heat exchanger, the four-way reversing valve, the bidirectional liquid storage device and a second switch valve, the other channel of the bidirectional liquid storage device is connected with the compressor through an electromagnetic valve, a second throttling valve and the second switch valve, the first one-way valve is connected with a first throttling valve in parallel, the third throttling valve is connected with a second one-way valve in parallel, the compressor is communicated with the outdoor heat exchanger through the first switch valve and the four-way reversing valve, and the outdoor heat exchanger is connected with the bidirectional liquid storage device through the second one-way valve and the anti-frosting coil and connected with the compressor through the first throttling valve, the indoor heat exchanger, the four-way reversing valve, the bidirectional liquid storage device and the second switch valve. The air source heat pump unit has the advantages of wider temperature adaptation range, efficient and reliable operation all the year round and capacity of delaying frosting.
Description
Technical field
The utility model relates to a kind of net for air-source heat pump units.
Background technology
Present stage, the operational effect of air source heat pump was also undesirable, and its reason mainly is that the low temperature adaptability of air source heat pump is poor, and Another reason is the frosting and the defrosting of air source heat pump.
Principle from steam compression type refrigeration, when air source heat pump is applied to cold district, reduction along with outdoor environment temperature, the unit compression ratio raises, volumetric efficiency reduces, refrigerant mass fluxes descends, and heating load sharply reduces, and the compressor exhaust temperature is too high can't normally to move unit or the operational reliability reduction; Add that leaving air temp reduces, particularly indoor temperature reduces during defrosting, has had a strong impact on the comfortableness of indoor environment.
The frosting of outdoor heat exchanger, defrosting cause the stability and the reliability variation of net for air-source heat pump units operation.Frosting mainly shows two aspects to the negative effect of the operation generation of net for air-source heat pump units: the formation that is the frost layer has on the one hand increased thermal conduction resistance, has reduced the heat transfer coefficient of heat exchanger; Be that the existence of frost layer has strengthened the resistance that air flows through finned-tube evaporator on the other hand, reduced air mass flow.Along with thickening of frost layer, evaporating temperature decline, heating capacity decline, fan performance decay will appear, and phenomenons such as electric current increasing make the net for air-source heat pump units cisco unity malfunction.
We can say that the low temperature adaptability of air source heat pump is poor, knot, defrosting problem are the bottlenecks of its efficient operation of restriction.How to improve air source heat pump refrigerant flow at low temperatures, reduce delivery temperature; Under high humidity environment, delay the outdoor heat exchanger frosting and be to be related to that air source heat pump is more extensive, the key issue of more efficient operation.
Summary of the invention
The purpose of this utility model is at the problems referred to above, provides a kind of and has stronger temperature accommodation, can delay frosting, the wide-temperature high-efficiency air source heat pump unit with anti-frosting function of annual high efficient and reliable operation.
The purpose of this utility model be achieved in that have compressor, indoor heat exchanger and outdoor heat exchanger, the exhaust outlet of compressor is after second valve by first first valve that opens and closes valve, four-way change-over valve, four-way change-over valve is communicated with indoor heat exchanger successively; Indoor heat exchanger is connected with two-way reservoir by first check valve, tells two the tunnel from two-way reservoir; Road opening and closing valve by the 3rd valve of frost prevention coil pipe, the 3rd choke valve, outdoor heat exchanger, four-way change-over valve, the 4th valve of four-way change-over valve, two-way reservoir, second successively and be connected wherein with the air entry of compressor; Another road wherein opens and closes valve by magnetic valve, second choke valve, second successively and is connected with the air entry of compressor; First check valve is connected in parallel to the first throttle valve reverse with the first check valve direction; The 3rd choke valve is connected in parallel and the second reverse check valve of the 3rd choke valve direction is arranged; The exhaust outlet of compressor is successively behind the 3rd valve communication chamber external heat exchanger by first first valve that opens and closes valve, four-way change-over valve, four-way change-over valve; Outdoor heat exchanger is connected with two-way reservoir by the frost prevention coil pipe by second check valve, then, opening and closing valve by first throttle valve, indoor heat exchanger, second valve of four-way change-over valve, the 4th valve of four-way change-over valve, two-way reservoir, second successively by two-way reservoir is connected with the air entry of compressor.
The utility model, compressor adopts screw compressor.
1), by the liquid spraying technique the utility model has following good effect:, improve this unit refrigerant flow at low temperatures, thereby strengthen the low temperature adaptability of air source heat pump; 2), the frost prevention coil pipe is set, between outside air temperature-6～5 ℃, relative humidity starts the frost prevention circulation under the meteorological condition more than 65%, improve outside air temperature, reduces relative humidity, delays frosting; 3), adopt two-way reservoir, thereby reservoir and gas-liquid separator are united two into one, not only simplified circulatory system flow process, and can realize cold, suction superheat before the throttling with excessivelying, further improve the efficient of unit, the safe operation of assurance unit; 4), this wide-temperature high-efficiency air source heat pump unit applicability with anti-frosting function is wide, adopts the air that is available anywhere as low level heat energy, characteristics such as adapt to that China is populous, site coverage, the scale of construction are big; 5), efficiently move the whole year, zone adaptability is strong, this wide-temperature high-efficiency air source heat pump unit with anti-frosting function can be as-15 ℃ of normal operations under low outside air temperature, and obtain the higher coefficient of performance, thereby the scope of application of air source heat pump is extended on the south the Shenyang from traditional the Changjiang river, the Huanghe valley, has very strong trans-regional adaptability.
The utility model is owing to strengthen the low temperature adaptability of air source heat pump by the liquid spraying technique; The frost prevention coil pipe is set, delays frosting; Adopt two-way reservoir, simplify circulatory system flow process, further improve the efficient of unit, guarantee the safe operation of unit; By these technical measures, make that the net for air-source heat pump units of utility model has stronger temperature accommodation, can delay frosting, the operation of annual high-efficiency reliable; Thereby, the utility model, the advantage of have stronger temperature accommodation, can delay frosting, annual high efficient and reliable being moved.
Following embodiment accompanying drawings is further described the utility model.
Description of drawings
Fig. 1 is the structural principle schematic diagram of an embodiment of the present utility model.
Among the figure, 1, compressor; 21, first valve of four-way change-over valve; 22, second valve of four-way change-over valve; 23, the 3rd valve of four-way change-over valve; 24, the 4th valve of four-way change-over valve; 3, indoor heat exchanger; 4, two-way reservoir; 5, frost prevention coil pipe; 6, outdoor heat exchanger; 7, first open and close valve; 8, first check valve; 9, first throttle valve; 10, second open and close valve; 11, second choke valve; 12, magnetic valve; 13, the 3rd choke valve; 14, second check valve.
The specific embodiment
With reference to Fig. 1, present embodiment has compressor 1, indoor heat exchanger 3 and outdoor heat exchanger 6, and compressor 1 adopts screw compressor; The exhaust outlet of compressor 1 is after second valve 22 by first first valve 21 that opens and closes valve 7, four-way change-over valve, four-way change-over valve is communicated with indoor heat exchangers 3 successively; Indoor heat exchanger is connected with two-way reservoir 4 by first check valve 8, tells two the tunnel from two-way reservoir; Road opening and closing valve 10 by the 3rd valve 23 of frost prevention coil pipe 5, the 3rd choke valve 13, outdoor heat exchanger 6, four-way change-over valve, the 4th valve 24 of four-way change-over valve, two-way reservoir, second successively and be connected wherein with the air entry of compressor 1; Another road wherein opens and closes valve 10 and is connected with the air entry of compressor 1 by magnetic valve 12, second choke valve 11, second successively; First check valve 8 is connected in parallel to the first throttle valve 9 reverse with the first check valve direction; The 3rd choke valve 13 is connected in parallel and the second reverse check valve 14 of the 3rd choke valve direction is arranged; The exhaust outlet of compressor 1 is successively behind the 3rd valve 23 communication chamber external heat exchangers 6 by first first valve 21 that opens and closes valve 7, four-way change-over valve, four-way change-over valve; Outdoor heat exchanger is connected with two-way reservoir 4 by frost prevention coil pipe 5 by second check valve 14, then, opening and closing valve 10 by first throttle valve 9, indoor heat exchanger 3, second valve 22 of four-way change-over valve, the 4th valve 24 of four-way change-over valve, two-way reservoir, second successively by two-way reservoir is connected with the air entry of compressor 1.
The utility model, its running is as follows: a, frost prevention running: between outside air temperature-6～5 ℃, relative humidity is under the meteorological condition more than 65%, start the frost prevention circulation, the high pressure refrigerant vapor that come out by compressor 1 this moment, first valve 21 through the first keying valve 7 and four-way change-over valve, second valve 22 of four-way change-over valve enters indoor heat exchanger 3 heat releases, to indoor heating, enter two-way reservoir 4 by first check valve 8 then, the refrigerant liquid that comes out from two-way reservoir enters frost prevention coil pipe 5, improve outside air temperature, reduce relative humidity, delay frosting, enter the 3rd choke valve 13 then, throttling becomes the refrigerant air-liquid mixture of low-temp low-pressure, and inlet chamber external heat exchanger 6 enters the 3rd valve 23 of four-way change-over valve after the heat absorption vaporization, the 4th valve 24 via four-way change-over valve, enter two-way reservoir then, further the vaporization back opens and closes valve 10 by second and enters compressor compresses, finishes a frost prevention circulation; At this moment, magnetic valve 12 cuts out; B, cold operation process: when outside air temperature is low, start the low temperature circulation, the high pressure refrigerant vapor that come out by compressor 1 this moment, first valve 21 through the first keying valve 7 and four-way change-over valve, second valve 22 of four-way change-over valve enters indoor heat exchanger 3 heat releases, to indoor heating, enter two-way reservoir 4 by first check valve 8 then, the refrigerant liquid that comes out from two-way reservoir divides two-way: wherein a road enter frost prevention coil pipe 5, enter the 3rd choke valve 13 then, throttling becomes the refrigerant air-liquid mixture of low-temp low-pressure, inlet chamber external heat exchanger 6, enter the 3rd valve 23 of four-way change-over valve after the heat absorption vaporization, the 4th valve 24 via four-way change-over valve, enter two-way reservoir then, after further back and another burst refrigerant mixed are come out from two-way reservoir in the vaporization back, open and close valve 10 by second and enter compressor 1 compression, finish a cold operation circulation; Another road wherein enters 11 throttlings of second choke valve by magnetic valve 12, throttling becomes gas-liquid mixture, with the refrigerant mixed of coming out from two-way reservoir 4, opens and closes valve 10 by second then and enters compressor, improve the refrigerant flow of low temperature lower compression machine, thereby reduce delivery temperature; C, Defrost operation process: when frosting appears in system's operation, start defrost cycle, the high pressure refrigerant vapor that come out by compressor 1 this moment, first valve 21 through the first keying valve 7 and four-way change-over valve, the 3rd valve 23 inlet chamber external heat exchangers 6 heat releases of four-way change-over valve, outdoor heat exchanger 6 is defrosted, enter frost prevention coil pipe 5 by second check valve 14 then, the refrigerant liquid that comes out from the frost prevention coil pipe enters two-way reservoir 4 and further cools off, enter first throttle valve 9 then, throttling becomes the refrigerant air-liquid mixture of low-temp low-pressure, enter indoor heat exchanger 3, simultaneously for fear of the indoor cold wind that send, can close indoor blower this moment, enter second valve 22 of four-way change-over valve after the cold-producing medium heat absorption vaporization, the 4th valve 24 via four-way change-over valve enters two-way reservoir then, after further come out from two-way reservoir in the vaporization back, open and close valve 10 by second and enter compressor compresses, finish a defrost cycle, at this moment, magnetic valve 12 cuts out; D, refrigerating operaton process: when summer, outside air temperature was higher, the indoor refrigeration that needs, at this moment start kind of refrigeration cycle, the high pressure refrigerant vapor of coming out by compressor 1, first valve 21 through the first keying valve 7 and four-way change-over valve, the 3rd valve 23 inlet chamber external heat exchangers 6 heat releases of four-way change-over valve, cold-producing medium is cooled off, entering frost prevention coil pipe 5 by second check valve 14 then carried out but cold, it is but cold that the refrigerant liquid that comes out from the frost prevention coil pipe enters two-way reservoir 4 further mistakes, and then the refrigerating efficiency of raising system, entering first throttle valve 9 then, throttling becomes the refrigerant air-liquid mixture of low-temp low-pressure, enter indoor heat exchanger 3, freeze to indoor, enter second valve 22 of four-way change-over valve after the cold-producing medium heat absorption vaporization, via the 4th valve 24 of four-way change-over valve, enter two-way reservoir then, after further come out from two-way reservoir in the vaporization back, open and close valve 10 by second and enter compressor compresses, finish a kind of refrigeration cycle, at this moment, magnetic valve 12 cuts out.
Claims (2)
1. the wide-temperature high-efficiency air source heat pump unit with anti-frosting function has compressor (1), indoor heat exchanger (3) and outdoor heat exchanger (6), it is characterized in that:
The exhaust outlet of described compressor (1) is after second valve (22) by first first valve (21) that opens and closes valve (7), four-way change-over valve, four-way change-over valve is communicated with indoor heat exchanger (3) successively; Indoor heat exchanger is connected with two-way reservoir (4) by first check valve (8), tells two the tunnel from two-way reservoir; Road opening and closing valve (10) by the 3rd valve (23) of frost prevention coil pipe (5), the 3rd choke valve (13), outdoor heat exchanger (6), four-way change-over valve, the 4th valve (24) of four-way change-over valve, two-way reservoir, second successively and be connected wherein with the air entry of compressor (1); Another road wherein opens and closes valve (10) by magnetic valve (12), second choke valve (11), second successively and is connected with the air entry of compressor (1);
Described first check valve (8) is connected in parallel to the first throttle valve (9) reverse with the first check valve direction; Described the 3rd choke valve (13) is connected in parallel and reverse second check valve (14) of the 3rd choke valve direction is arranged; The exhaust outlet of described compressor (1) is successively behind the 3rd valve (23) the communication chamber external heat exchanger (6) by first first valve (21) that opens and closes valve (7), four-way change-over valve, four-way change-over valve; Outdoor heat exchanger is connected with two-way reservoir (4) by frost prevention coil pipe (5) by second check valve (14), then, opening and closing valve (10) by first throttle valve (9), indoor heat exchanger (3), second valve (22) of four-way change-over valve, the 4th valve (24) of four-way change-over valve, two-way reservoir, second successively by two-way reservoir is connected with the air entry of compressor (1).
2. the wide-temperature high-efficiency air source heat pump unit with anti-frosting function according to claim 1 is characterized in that: described compressor (1) is a screw compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201629639U CN201680647U (en) | 2010-04-19 | 2010-04-19 | Wide-temperature-range high-efficient air source heat pump unit with anti-frosting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201629639U CN201680647U (en) | 2010-04-19 | 2010-04-19 | Wide-temperature-range high-efficient air source heat pump unit with anti-frosting function |
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| CN201680647U true CN201680647U (en) | 2010-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201629639U Expired - Lifetime CN201680647U (en) | 2010-04-19 | 2010-04-19 | Wide-temperature-range high-efficient air source heat pump unit with anti-frosting function |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806519A (en) * | 2010-04-19 | 2010-08-18 | 广东吉荣空调有限公司 | Wide-temperature high-efficiency air source heat pump unit with anti-frosting function and operating method thereof |
| CN102419038A (en) * | 2011-12-12 | 2012-04-18 | 广东美的暖通设备限公司 | Air conditioning system and control method thereof |
| CN107062705A (en) * | 2016-12-06 | 2017-08-18 | 广东美芝制冷设备有限公司 | Heat-exchanger rig and the refrigeration system with it |
| CN108007016A (en) * | 2017-10-30 | 2018-05-08 | 珠海格力电器股份有限公司 | The control method of heat pump system and heat pump system |
-
2010
- 2010-04-19 CN CN2010201629639U patent/CN201680647U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806519A (en) * | 2010-04-19 | 2010-08-18 | 广东吉荣空调有限公司 | Wide-temperature high-efficiency air source heat pump unit with anti-frosting function and operating method thereof |
| CN101806519B (en) * | 2010-04-19 | 2012-07-11 | 广东吉荣空调有限公司 | Wide-temperature high-efficiency air source heat pump unit with anti-frosting function and operating method thereof |
| CN102419038A (en) * | 2011-12-12 | 2012-04-18 | 广东美的暖通设备限公司 | Air conditioning system and control method thereof |
| CN102419038B (en) * | 2011-12-12 | 2013-10-09 | 广东美的暖通设备有限公司 | Air conditioning system and control method thereof |
| CN107062705A (en) * | 2016-12-06 | 2017-08-18 | 广东美芝制冷设备有限公司 | Heat-exchanger rig and the refrigeration system with it |
| CN108007016A (en) * | 2017-10-30 | 2018-05-08 | 珠海格力电器股份有限公司 | The control method of heat pump system and heat pump system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
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Granted publication date: 20101222 |