CN102721240A - Low-temperature heat pump air conditioner heat exchanging system with anti-icing function - Google Patents
Low-temperature heat pump air conditioner heat exchanging system with anti-icing function Download PDFInfo
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- CN102721240A CN102721240A CN2012101936823A CN201210193682A CN102721240A CN 102721240 A CN102721240 A CN 102721240A CN 2012101936823 A CN2012101936823 A CN 2012101936823A CN 201210193682 A CN201210193682 A CN 201210193682A CN 102721240 A CN102721240 A CN 102721240A
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Abstract
The invention provides a low-temperature heat pump air conditioner heat exchanging system with an anti-icing function. The low-temperature heat pump air conditioner heat exchanging system comprises a compressor, a four-way valve, a plate-type heat exchanger, a gas-liquid separator, a finned type heat exchanger, a first throttling gear, a second throttling gear, a first check valve, a second check valve, a liquid storage tank, a filter and an anti-ice expansion pipe, wherein two pipe orifices of the four-way valve are respectively connected with the compressor and the plate-type heat exchanger, and another two pipe orifices of the four-way valve are respectively connected with the gas-liquid separator and the finned type heat exchanger; the gas-liquid separator is connected with the compressor, a heat pump branch and a defrosting branch are connected between the plate-type heat exchanger and the finned type heat exchanger; the heat pump branch comprises the first check valve, the liquid storage tank, the filter and the first throttling gear which are connected in sequence; the defrosting branch comprises the second throttling gear and the second check valve; one end of the anti-ice expansion pipe is connected with the first throttling gear, and the other end of the anti-ice expansion pipe is respectively connected with the second throttling device and the filter. The low-temperature heat pump air conditioner heat exchanging system provided by the invention can effectively inhibit generation of rime frosts at the bottom of the finned type heat exchanger, and slow down the freezing rate of the finned type heat exchanger.
Description
Technical field
The present invention relates to the technical field of low-temperature heat pump air conditioner, refer in particular to a kind of low-temperature heat pump air conditioner heat-exchange system with icing protection.
Background technology
At present, existing low-temperature heat pump air conditioner heat-exchange system does not generally all have icing protection, promptly is not to be provided for preventing that its finned heat exchanger bottom from freezing or effectively slow down the anti-freeze structure of its icing speed; Can reduce its heat exchange efficiency like this; Wherein, particularly under some severe rugged environments, such as the lower north of temperature; During existing low-temperature heat pump air conditioner heat-exchange system heating operation, can have a strong impact on its normal use because of its finned heat exchanger bottom freezes.Therefore, be accompanied by the continuous development of social science and technology now, how existing low-temperature heat pump air conditioner heat-exchange system improved, make it have certain anti-ice function that expands, become researcher's urgent problem.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, provide a kind of reasonable in design reliable, can effectively alleviate the low-temperature heat pump air conditioner heat-exchange system with icing protection of its icing speed.
For realizing above-mentioned purpose; Technical scheme provided by the present invention is: a kind of low-temperature heat pump air conditioner heat-exchange system with icing protection; It includes compressor, cross valve, plate type heat exchanger, gas-liquid separator, finned heat exchanger, first throttle device, second throttling arrangement, first check valve, second check valve, fluid reservoir, filter; Wherein, Two mouths of pipe of said cross valve connect the gas outlet of compressor and the air inlet of plate type heat exchanger respectively, and its two other mouth of pipe connects the gas outlet of the air inlet and the finned heat exchanger of gas-liquid separator respectively; The gas outlet of said gas-liquid separator and the air inlet of compressor join, and simultaneously, the gas outlet of above-mentioned plate type heat exchanger is connected with the branch road that two air inlets with finned heat exchanger join respectively, and it is specially heat pump branch road and defrosting branch road; Described heat pump branch road includes first check valve, fluid reservoir, filter, the first throttle device that connects successively along the direction of plate type heat exchanger to finned heat exchanger; Described defrosting branch road includes second throttling arrangement and second check valve; The input of said second throttling arrangement joins with the output of filter and the input of first throttle device respectively; Its output joins with the input of first check valve and the gas outlet of plate type heat exchanger respectively; Simultaneously; The input of second check valve joins with the air inlet of finned heat exchanger and the output of first throttle device respectively, and its output joins with the output of first check valve and the input of fluid reservoir respectively; It also includes the ice pipe that expands of preventing that correspondence is located at the finned heat exchanger bottom, and wherein, an end of said anti-bloated ice pipe and the input of first throttle device join, and its other end joins with the input of second throttling arrangement and the output of filter respectively.
The described first throttle device and second throttling arrangement are choke valve.
The present invention is after having adopted such scheme; Its great advantage is that the present invention has certain icing protection, and this compares prior art, and the present invention can effectively suppress the generation of finned heat exchanger bottom frost; Alleviate its icing speed; Thereby reach the purpose that improves its heat exchange efficiency, equally also can be applicable to more and use under the severe rugged environment, thereby can produce huge economic benefit.
Description of drawings
Fig. 1 is a schematic diagram of the present invention.
The specific embodiment
Below in conjunction with specific embodiment the present invention is described further.
Shown in accompanying drawing 1; The described low-temperature heat pump air conditioner heat-exchange system of present embodiment; It includes compressor 1, cross valve 2, plate type heat exchanger 3, gas-liquid separator 4, finned heat exchanger 5, first throttle device 6, second throttling arrangement 7, first check valve 8, second check valve 9, fluid reservoir 10, filter 11 and the corresponding anti-ice pipe 14 that expands that is located at these finned heat exchanger 5 bottoms; Wherein, Two mouths of pipe of the said cross valve 2 of present embodiment connect the gas outlet of compressor 1 and the air inlet of plate type heat exchanger 3 respectively, and its two other mouth of pipe connects the gas outlet of the air inlet and the finned heat exchanger 5 of gas-liquid separator 4 respectively; The air inlet of the gas outlet of said gas-liquid separator 4 and compressor 1 joins, and simultaneously, the gas outlet of above-mentioned plate type heat exchanger 3 is connected with the branch road that two air inlets with finned heat exchanger 5 join respectively, and it is specially heat pump branch road 12 and defrosting branch road 13; Described heat pump branch road 12 includes first check valve 8, fluid reservoir 10, filter 11, the first throttle device 6 that connects successively along the direction of plate type heat exchanger 3 to finned heat exchanger 5; Described defrosting branch road 13 includes second throttling arrangement 7 and second check valve 9; The input of said second throttling arrangement 7 joins with the output of filter 11 and the input of first throttle device 6 respectively; Its output joins with the input of first check valve 8 and the gas outlet of plate type heat exchanger 3 respectively; Simultaneously; The input of second check valve 9 joins with the air inlet of finned heat exchanger 5 and the output of first throttle device 6 respectively, and its output joins with the output of first check valve 8 and the input of fluid reservoir 10 respectively; One end of said anti-bloated ice pipe 14 and the input of first throttle device 6 join, and its other end joins with the input of second throttling arrangement 7 and the output of filter 11 respectively.In addition, the described first throttle device 6 of present embodiment and second throttling arrangement 7 are choke valve.The operation principle that below is the above-mentioned low-temperature heat pump air conditioner heat-exchange system of present embodiment is described: during defrosting; Shown in the dotted arrow in the accompanying drawing 1, the refrigerant gas of HTHP is discharged through compressor 1, behind cross valve 2, gets into finned heat exchanger 5 afterwards and defrosts; Be condensed into cryogenic high pressure liquid; Go into board-like heat exchanger 3 heat exchange through second check valve 9, fluid reservoir 10, filter 11, second throttling arrangement 7 are laggard successively afterwards, form the refrigerant gas of low-temp low-pressure, and then successively through behind cross valve 2 and the gas-liquid separator 4; Final compressor 1 compression, the completion compression cycle of getting into; When heating; Shown in the solid arrow in the accompanying drawing 1, the refrigerant gas of HTHP is discharged through compressor 1, gets into plate type heat exchanger 3 heat exchange through cross valve 2 afterwards; Warm highly pressurised liquid in being condensed into; Get into finned heat exchanger 5 evaporations through first check valve 8, fluid reservoir 10, filter 11, the anti-ice pipe 14 that expands, first throttle device 6 back successively afterwards, in the anti-ice pipe 14 that expands and then through fan 15 hot blast is blown out and the gas of formation low-temp low-pressure after the refrigerant liquid heat exchange in the finned heat exchanger 5; Get into compressor 1 compression through cross valve 2, gas-liquid separator 4 backs successively at last, accomplish compression cycle.In a word, after adopting above scheme, compare prior art; Anti-the expand ice pipe 14 of the present invention through setting up makes it have certain icing protection, can effectively suppress the generation of finned heat exchanger 5 bottom frosts; Alleviate its icing speed, thereby reach the purpose that improves its heat exchange efficiency, equally also can be applicable to more and use under the severe rugged environment; Thereby can produce huge economic benefit, be worthy to be popularized.
The examples of implementation of the above only are the present invention's preferred embodiment, are not to limit practical range of the present invention with this, so the variation that all shapes according to the present invention, principle are done all should be encompassed in protection scope of the present invention.
Claims (2)
1. low-temperature heat pump air conditioner heat-exchange system with icing protection; It includes compressor (1), cross valve (2), plate type heat exchanger (3), gas-liquid separator (4), finned heat exchanger (5), first throttle device (6), second throttling arrangement (7), first check valve (8), second check valve (9), fluid reservoir (10), filter (11); Wherein, Two mouths of pipe of said cross valve (2) connect the gas outlet of compressor (1) and the air inlet of plate type heat exchanger (3) respectively, and its two other mouth of pipe connects the gas outlet of the air inlet and the finned heat exchanger (5) of gas-liquid separator (4) respectively; The air inlet of the gas outlet of said gas-liquid separator (4) and compressor (1) joins; Simultaneously; The gas outlet of above-mentioned plate type heat exchanger (3) is connected with the branch road that two air inlets with finned heat exchanger (5) join respectively, and it is specially heat pump branch road (12) and defrosting branch road (13); Described heat pump branch road (12) includes first check valve (8), fluid reservoir (10), filter (11), the first throttle device (6) that connects successively along the direction of plate type heat exchanger (3) to finned heat exchanger (5); Described defrosting branch road (13) includes second throttling arrangement (7) and second check valve (9); The input of said second throttling arrangement (7) joins with the output of filter (11) and the input of first throttle device (6) respectively; Its output joins with the input of first check valve (8) and the gas outlet of plate type heat exchanger (3) respectively; Simultaneously; The input of second check valve (9) joins with the air inlet of finned heat exchanger (5) and the output of first throttle device (6) respectively, and its output joins with the output of first check valve (8) and the input of fluid reservoir (10) respectively; It is characterized in that: it also includes the anti-ice pipe (14) that expands that correspondence is located at finned heat exchanger (5) bottom; Wherein, The said anti-ice that expands manages an end of (14) and the input of first throttle device (6) joins, and its other end joins with the input of second throttling arrangement (7) and the output of filter (11) respectively.
2. a kind of low-temperature heat pump air conditioner heat-exchange system with icing protection according to claim 1 is characterized in that: described first throttle device (6) and second throttling arrangement (7) are choke valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210193682.3A CN102721240B (en) | 2012-06-13 | 2012-06-13 | A kind of low-temperature heat pump air conditioner heat-exchange system with icing protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210193682.3A CN102721240B (en) | 2012-06-13 | 2012-06-13 | A kind of low-temperature heat pump air conditioner heat-exchange system with icing protection |
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| Publication Number | Publication Date |
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| CN102721240A true CN102721240A (en) | 2012-10-10 |
| CN102721240B CN102721240B (en) | 2016-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210193682.3A Active CN102721240B (en) | 2012-06-13 | 2012-06-13 | A kind of low-temperature heat pump air conditioner heat-exchange system with icing protection |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105157267A (en) * | 2015-10-21 | 2015-12-16 | 苏州医电神空调设备工程有限公司 | Multifunctional four-pipe direct evaporation system |
| CN106705494A (en) * | 2017-03-08 | 2017-05-24 | 广东美格动力新能源有限公司 | Air source heat pump energy conservation system with function of preventing air side heat exchanger from freezing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61114042A (en) * | 1984-11-07 | 1986-05-31 | Daikin Ind Ltd | Defrosting control device of air conditioner |
| CN101398234A (en) * | 2007-09-28 | 2009-04-01 | 德州亚太集团有限公司 | Low-temperature air-cooling heat pump unit |
| 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 |
| CN202648270U (en) * | 2012-06-13 | 2013-01-02 | 广东澳信热泵空调有限公司 | Anti-freeze low temperature heat pump air conditioning heat exchange system |
-
2012
- 2012-06-13 CN CN201210193682.3A patent/CN102721240B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61114042A (en) * | 1984-11-07 | 1986-05-31 | Daikin Ind Ltd | Defrosting control device of air conditioner |
| CN101398234A (en) * | 2007-09-28 | 2009-04-01 | 德州亚太集团有限公司 | Low-temperature air-cooling heat pump unit |
| 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 |
| CN202648270U (en) * | 2012-06-13 | 2013-01-02 | 广东澳信热泵空调有限公司 | Anti-freeze low temperature heat pump air conditioning heat exchange system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105157267A (en) * | 2015-10-21 | 2015-12-16 | 苏州医电神空调设备工程有限公司 | Multifunctional four-pipe direct evaporation system |
| CN106705494A (en) * | 2017-03-08 | 2017-05-24 | 广东美格动力新能源有限公司 | Air source heat pump energy conservation system with function of preventing air side heat exchanger from freezing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102721240B (en) | 2016-02-10 |
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