CN203478750U - Refrigerating system with defrosting function and air conditioner - Google Patents
Refrigerating system with defrosting function and air conditioner Download PDFInfo
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- CN203478750U CN203478750U CN201320565467.1U CN201320565467U CN203478750U CN 203478750 U CN203478750 U CN 203478750U CN 201320565467 U CN201320565467 U CN 201320565467U CN 203478750 U CN203478750 U CN 203478750U
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- heat exchanger
- outdoor heat
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The utility model provides a refrigerating system with the defrosting function and an air conditioner. The problems that in the prior art, electric heating tools have potential safety hazards and are complex in structure, and defrosting can not be effectively performed can be solved. According to the technical scheme, the refrigerating system with the defrosting function comprises a compressor, a four-way valve, an indoor heat exchanger, an outdoor heat exchanger, a liquid dispenser and a refrigerant pipeline, wherein a first electronic expansion valve is arranged between the indoor heat exchanger and the outdoor heat exchanger, and a second electronic expansion valve is arranged between a saturation segment and an undercooling segment of the outdoor heat exchanger. According to the refrigerating system with the defrosting function, in the heating operation process, the defrosting function can be started without reversing of the four-way valve, and thus the stability of the refrigerating system is improved.
Description
Technical field
The utility model belongs to air conditioning and refrigeration field of engineering technology, specifically, relates to a kind of air-conditioner refrigerating system.
Background technology
Domestic air conditioning is in heating process, exist frosting fast, problem frequently defrosts, the solution existing at present has at outdoor unit base heat tape is set, when outdoor frosting is more serious, starts and heat, help defrosting, but the water after defrosting can flow on base plate, electrical heating is simultaneously arranged on base plate, has certain potential safety hazard; In addition, also there are some by-pass collars, for example between exhaust outlet of compressor and air entry, by magnetic valve and capillary, be together in series, when frosting, magnetic valve is opened, and a part of refrigerant is directly got back to press suction side by by-pass collar, reduce system load, reduce frosting rate, but this scheme has only postponed frosting, can not play the effect of defrosting.
Chinese patent notification number: CN202032798, a kind of antifrost air conditioner, the prior art discloses a kind of antifrost air conditioner, include compressor, cross valve, indoor heat exchanger, heat capillary and outdoor heat exchanger, wherein the blast pipe of compressor is connected with the refrigerant entrance of indoor heat exchanger by cross valve, the refrigerant exit of indoor heat exchanger is connected with the refrigerant entrance of outdoor heat exchanger by heating capillary, the refrigerant exit of outdoor heat exchanger is connected with the gas returning port of compressor by cross valve, between the blast pipe of compressor and the refrigerant exit of outdoor heat exchanger, be connected with the combination bypass capillary assembly being serially connected by capillary and magnetic valve.During heating operation, when outdoor heat exchanger coil temperature is during lower than certain value, magnetic valve is opened, in system, a part of refrigerant directly flows back to compressor through bypass capillary by compressor outlet, reduce outdoor heat exchanger load, and then avoid or postponed outdoor heat exchanger frosting process, improve the service life of air-conditioner and the comfort level of use, the efficiency while improving air conditioner low temperature operation.
This technical scheme is typically with by-pass collar, to realize the refrigeration system that slows down frosting, makes cold-producing medium from the direct resorption gas port of press exhaust outlet process by-pass collar, reduces refrigeration system load, thereby reduces frosting rate.
But this technical scheme can only reduce frosting rate, only postponed frosting, can not play the effect of defrosting.
China's notification number is CN2380848, title: a kind of heat pump type air conditioner with subsidiary defrosting device, comprise an existing heat pump type air conditioner, fill a heating wire or electrothermal tube on the bottom plate of outdoor unit of this air-conditioner, this heating wire or electrothermal tube were around the heat exchanger of air-conditioner one week.Heating wire or electrothermal tube are fixed by colloid fixture, and wrap with insulating materials outside, and thermal protector is placed on the dividing plate of air-conditioner, can thoroughly defrost, and have got rid of the phenomenon of tap obstruction accumulated ice on chassis.This technical scheme is in order to prevent that base plate from freezing, to defrost by electrically heated mode, needs but will increase extra constitutional detail and the cooperation of automatically controlled part, and complex structure, cost is high, and electrical heating also makes security reduce.
Summary of the invention
The utility model provides a kind of refrigeration system with defrost function and air-conditioner, and the electrical heating that it can solve prior art existence has potential safety hazard, complex structure, the problem that can not effectively defrost.
The technical solution of the utility model is, a kind of refrigeration system with defrost function, comprise compressor, cross valve, indoor heat exchanger, outdoor heat exchanger, knockout and refrigerant line, between described indoor heat exchanger and outdoor heat exchanger, be provided with the first electric expansion valve, between saturated section of outdoor heat exchanger and super cooled sect, be provided with the second electric expansion valve.
Described second electric expansion valve one end is connected with the outlet of described knockout, and the other end is connected with the super cooled sect entrance of outdoor heat exchanger.
Described first electric expansion valve one end is connected with the super cooled sect outlet of outdoor heat exchanger, and the other end is connected with the refrigeration pipe of indoor heat exchanger import.
U-shaped pipe in the super cooled sect of described outdoor heat exchanger is single.
Superheat section in outdoor heat exchanger and saturated section have a plurality of diverter branch, and the stream of a plurality of described diverter branch is all inverse u shape setting, or are all oppositely " N " type setting, or inverse u shape and oppositely the combination of " N " type arrange.Adopt above-mentioned flow arrangement, flow of refrigerant resistance is little.To improve the overall heat exchange efficiency of outdoor heat exchanger.
Described diverter branch Wei San road.
A kind of air-conditioner, comprise refrigeration system and outdoor machine fan with defrost function, described refrigeration system comprises compressor, cross valve, indoor heat exchanger, outdoor heat exchanger, knockout and refrigerant line, between described indoor heat exchanger and outdoor heat exchanger, be provided with the first electric expansion valve, between saturated section of outdoor heat exchanger and super cooled sect, be provided with the second electric expansion valve.
During defrosting, control described outdoor machine fan stall, control described the first electric expansion valve standard-sized sheet, control described the second electric expansion valve and open certain aperture and play throttling action.
Described first electric expansion valve one end is connected with the super cooled sect outlet of outdoor heat exchanger, and the other end is connected with the refrigerant line of indoor heat exchanger import.Described second electric expansion valve one end is connected with the outlet of described knockout, and the other end is connected with the super cooled sect entrance of outdoor heat exchanger.
U-shaped pipe in the super cooled sect of described outdoor heat exchanger is single.
Superheat section in outdoor heat exchanger and saturated section have a plurality of diverter branch, and the stream of a plurality of described diverter branch is all inverse u shape setting, or are all oppositely " N " type setting, or inverse u shape and oppositely " N " type combination.
Refrigeration system of the present utility model comprises compressor, indoor heat exchanger, the first electric expansion valve and outdoor heat exchanger (outdoor heat exchanger superheat section, saturated section and super cooled sect) and the second electric expansion valve.During heating operation, refrigerant flow direction is, compressor → cross valve → indoor heat exchanger → the first electric expansion valve → outdoor heat exchanger → cross valve → compressor, wherein in outdoor heat exchanger, the flow direction is, saturated section and superheat section of outdoor heat exchanger super cooled sect → the second electric expansion valve → outdoor heat exchanger.
When the coil pipe in outdoor heat exchanger is greater than 0 ℃, judge outdoor not frosting, the first electric expansion valve is opened certain aperture, plays throttling action, the second electric expansion valve standard-sized sheet;
Coil pipe in outdoor heat exchanger is less than 0 ℃, judges outdoor frosting, after a period of time, controls the first electric expansion valve standard-sized sheet, controls the second electric expansion valve and opens certain aperture, outdoor machine fan stall.
When outdoor frosting, control the first electric expansion valve standard-sized sheet, the second electric expansion valve is opened certain aperture and is played throttling action, outdoor machine fan stall; At this moment, the bottom that is equivalent to outdoor heat exchanger is also used as condenser, and the super cooled sect of outdoor heat exchanger inside is the liquid refrigerants of HTHP, can prevent that the defrost water on base plate from freezing; Again due to outdoor machine fan stall, the superheat section of outdoor heat exchanger and saturated section weaken with air heat-exchange, and frosting rate is declined, and outdoor heat exchanger super cooled sect hot air rising around, helps outdoor heat exchanger defrosting to a certain extent.
When refrigerating operaton, the second electric expansion valve is often opened, and the first electric expansion valve is opened certain aperture, plays throttling action, and the super cooled sect of outdoor heat exchanger is still used as the super cooled sect of refrigeration, on existing outdoor heat exchanger flow process without impact.
The utility model compared with prior art, the utility model is without bypass circulation, is equivalent to throttling part, from moving on between indoor and outdoor heat exchanger in the middle of outdoor heat exchanger, to make an outdoor heat exchanger part serve as evaporimeter as a condenser part, heat exchange mutually, realizes defrosting.
The utility model compared with prior art, on the basis of script batch complete machine scheme, increases by two restricting elements and corresponding software control, implements walk away safety, and reliability is better, and cost is low.
Accompanying drawing explanation
Fig. 1 is a kind of refrigerating system figure with defrost function of the utility model;
1, compressor; 2, cross valve; 3, indoor heat exchanger; 4, the first electric expansion valve; 5, outdoor heat exchanger; 5-1, outdoor heat exchanger super cooled sect; Saturated section of 5-2, outdoor heat exchanger; 5-3, outdoor heat exchanger superheat section; 6, the second electric expansion valve; 7, knockout; 8, refrigerant line.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail.
Referring to Fig. 1, in order to make the refrigeration system of air-conditioner there is defrost function, design concept is, is provided with the first electric expansion valve 4 between indoor heat exchanger 3 and outdoor heat exchanger 5, between saturated section of 5-2 of outdoor heat exchanger and super cooled sect 5-1, is provided with the second electric expansion valve 6.Described second electric expansion valve 6 one end are connected with the outlet of described knockout 7, and the other end is connected with the super cooled sect 5-1 entrance of outdoor heat exchanger.First electric expansion valve 4 one end are connected with the super cooled sect 5-1 outlet of outdoor heat exchanger, and the other end is connected with the refrigerant line 8 of indoor heat exchanger 3 imports.Above-mentioned outlet and entrance are determined with kind of refrigeration cycle.
In the present embodiment, the superheat section 5-3 in outdoor heat exchanger and saturated section of 5-2 have three diverter branch, and three described diverter branch are inverse u shape and oppositely " N " type combination setting.A diverter branch that is superheat section 5-3 is inverse u shape, and two diverter branch of saturated section of 5-2 are oppositely " N " type setting.
The utility model can balanced cooling flow and wind field wind conditions, and three go out gas branch pipe and are aggregated into current divider 7, thereby can adjusting refrigerant flow rate, improves kind of refrigeration cycle separatory uniformity and stability, has improved overall heat exchange efficiency and the EER of condenser.
During air conditioner heat-production operation, refrigerant flow direction is as shown in the arrow in Fig. 1, compressor 1 → cross valve 2 → indoor heat exchanger 3 → the first electric expansion valve 4 → outdoor heat exchanger 5 → cross valve 2 → compressors 1, wherein the interior flow direction of outdoor heat exchanger 5 is, saturated section of 5-2 of outdoor heat exchanger super cooled sect 5-1 → the second electric expansion valve 6 → knockout 7 → outdoor heat exchanger and superheat section 5-3.
When the coil pipe in outdoor heat exchanger 5 is greater than 0 ℃, judge outdoor not frosting, the first electric expansion valve 4 is opened certain aperture, plays throttling action, the second electric expansion valve 6 standard-sized sheets;
Coil pipe in outdoor heat exchanger is less than 0 ℃, judges outdoor frosting, controls the first electric expansion valve 4 standard-sized sheets, and the second electric expansion valve 6 is opened certain aperture and played throttling action, outdoor machine fan stall; At this moment, the bottom that is equivalent to outdoor heat exchanger 5 is also used as condenser, and the super cooled sect 5-1 of outdoor heat exchanger inside is the liquid refrigerants of HTHP, can prevent that the defrost water on base plate from freezing; Again due to outdoor machine fan stall, the superheat section 5-3 of outdoor heat exchanger and saturated section of 5-2 and air heat-exchange weaken, and frosting rate is declined, and outdoor heat exchanger super cooled sect 5-1 hot air rising around, helps outdoor heat exchanger 5 defrostings to a certain extent.
When refrigerating operaton, the second electric expansion valve 6 is often opened, and the first electric expansion valve 4 is opened certain aperture, plays throttling action, and the super cooled sect 5-1 of outdoor heat exchanger is still used as the super cooled sect of refrigeration, on existing outdoor heat exchanger flow process without impact.
First and second electric expansion valve 4,6 standard-sized sheets are generally 500 steps, and above-mentioned first and second electric expansion valve 4,6 is opened certain aperture and is generally 200-300 step, according to actual conditions, controls aperture.
The utility model, in heating process, does not need cross valve commutation, can start defrost function, has improved refrigeration system stability, has improved defrosting effect.
The above, be only preferred embodiment of the present utility model, is not the utility model to be done to the restriction of other form, and any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.All technical solutions of the utility model contents that do not depart from, any simple modification, equivalent variations and the remodeling above embodiment done according to technical spirit of the present utility model, still belong to the protection domain of technical solutions of the utility model.
Claims (9)
1. the refrigeration system with defrost function, comprise compressor, cross valve, indoor heat exchanger, outdoor heat exchanger, knockout and refrigerant line, between described indoor heat exchanger and outdoor heat exchanger, be provided with the first electric expansion valve, it is characterized in that: between saturated section of outdoor heat exchanger and super cooled sect, be provided with the second electric expansion valve.
2. a kind of refrigeration system with defrost function according to claim 1, it is characterized in that: described second electric expansion valve one end is connected with the outlet of described knockout, the other end is connected with the super cooled sect entrance of outdoor heat exchanger, described first electric expansion valve one end is connected with the super cooled sect outlet of outdoor heat exchanger, and the other end is connected with the refrigerant line of indoor heat exchanger import.
3. a kind of refrigeration system with defrost function according to claim 1, is characterized in that: the U-shaped pipe in the super cooled sect of described outdoor heat exchanger is single.
4. a kind of refrigeration system with defrost function according to claim 1, it is characterized in that: the superheat section in outdoor heat exchanger and saturated section have a plurality of diverter branch, the stream of a plurality of described diverter branch is all inverse u shape setting, or be all oppositely " N " type setting, or inverse u shape and oppositely " N " type combination setting.
5. a kind of refrigeration system with defrost function according to claim 4, is characterized in that: described diverter branch Wei San road.
6. an air-conditioner, comprise refrigeration system and outdoor machine fan with defrost function, described refrigeration system comprises compressor, cross valve, indoor heat exchanger, outdoor heat exchanger, knockout and refrigerant line, between described indoor heat exchanger and outdoor heat exchanger, be provided with the first electric expansion valve, it is characterized in that: between saturated section of outdoor heat exchanger and super cooled sect, be provided with the second electric expansion valve.
7. air-conditioner according to claim 6, is characterized in that: described first electric expansion valve one end is connected with the super cooled sect outlet of outdoor heat exchanger, and the other end is connected with the refrigeration pipe of indoor heat exchanger import,
Described second electric expansion valve one end is connected with the outlet of described knockout, and the other end is connected with the super cooled sect entrance of outdoor heat exchanger.
8. air-conditioner according to claim 7, is characterized in that: the U-shaped pipe in the super cooled sect of described outdoor heat exchanger is single.
9. air-conditioner according to claim 7, it is characterized in that: the superheat section in outdoor heat exchanger and saturated section have a plurality of diverter branch, the stream of a plurality of described diverter branch is all inverse u shape setting, or be all oppositely " N " type setting, or inverse u shape and oppositely " N " type combination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320565467.1U CN203478750U (en) | 2013-09-12 | 2013-09-12 | Refrigerating system with defrosting function and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320565467.1U CN203478750U (en) | 2013-09-12 | 2013-09-12 | Refrigerating system with defrosting function and air conditioner |
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| Publication Number | Publication Date |
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| CN203478750U true CN203478750U (en) | 2014-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320565467.1U Expired - Fee Related CN203478750U (en) | 2013-09-12 | 2013-09-12 | Refrigerating system with defrosting function and air conditioner |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103954087A (en) * | 2014-05-21 | 2014-07-30 | 珠海格力电器股份有限公司 | Defrosting device, heat pump device, and defrosting method for defrosting device |
| CN106016499A (en) * | 2016-05-13 | 2016-10-12 | 珠海格力电器股份有限公司 | Outdoor heat exchanger, air conditioner with outdoor heat exchanger and control method of air conditioner |
| CN106556082A (en) * | 2015-09-25 | 2017-04-05 | 青岛海尔空调电子有限公司 | Central air-conditioning |
| CN107084562A (en) * | 2017-04-13 | 2017-08-22 | 青岛海尔空调器有限总公司 | A kind of control method of air conditioner and air conditioner |
| CN109373514A (en) * | 2018-11-19 | 2019-02-22 | 青岛海尔空调电子有限公司 | A kind of air-conditioner outdoor unit defrosting control method |
-
2013
- 2013-09-12 CN CN201320565467.1U patent/CN203478750U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103954087A (en) * | 2014-05-21 | 2014-07-30 | 珠海格力电器股份有限公司 | Defrosting device, heat pump device, and defrosting method for defrosting device |
| CN103954087B (en) * | 2014-05-21 | 2016-03-23 | 珠海格力电器股份有限公司 | Defrosting device, heat pump device, and defrosting method for defrosting device |
| CN106556082A (en) * | 2015-09-25 | 2017-04-05 | 青岛海尔空调电子有限公司 | Central air-conditioning |
| CN106556082B (en) * | 2015-09-25 | 2019-07-12 | 青岛海尔空调电子有限公司 | Central air-conditioning |
| CN106016499A (en) * | 2016-05-13 | 2016-10-12 | 珠海格力电器股份有限公司 | Outdoor heat exchanger, air conditioner with outdoor heat exchanger and control method of air conditioner |
| CN107084562A (en) * | 2017-04-13 | 2017-08-22 | 青岛海尔空调器有限总公司 | A kind of control method of air conditioner and air conditioner |
| CN109373514A (en) * | 2018-11-19 | 2019-02-22 | 青岛海尔空调电子有限公司 | A kind of air-conditioner outdoor unit defrosting control method |
| CN109373514B (en) * | 2018-11-19 | 2021-07-23 | 青岛海尔空调电子有限公司 | Defrosting control method for outdoor unit of air conditioner |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20170912 |
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| CF01 | Termination of patent right due to non-payment of annual fee |