CN105423448A - Heat exchanger for air conditioning and air conditioner - Google Patents
Heat exchanger for air conditioning and air conditioner Download PDFInfo
- Publication number
- CN105423448A CN105423448A CN201511002026.0A CN201511002026A CN105423448A CN 105423448 A CN105423448 A CN 105423448A CN 201511002026 A CN201511002026 A CN 201511002026A CN 105423448 A CN105423448 A CN 105423448A
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- row
- tube
- air conditioner
- fin
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/14—Heat exchangers specially adapted for separate outdoor units
- F24F1/18—Heat exchangers specially adapted for separate outdoor units characterised by their shape
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/06—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits having a single U-bend
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2210/00—Heat exchange conduits
- F28F2210/08—Assemblies of conduits having different features
Abstract
The invention provides a heat exchanger for air conditioning. The heat exchanger is characterized in that at least two rows of heat exchanger units are provided, wherein the heat exchanger units are formed by a plurality of U-shaped tubes which penetrate fins; the windward sides of the heat exchanger units are used as an outer row, and the leeward sides of the heat exchanger units are used as an inner outer row. The heat exchanger further comprises an inlet tube assembly and an outlet tube assembly; the diameter of the U-shaped tubes of the heat exchanger units gradually increases from the outer row to the inner row, and the space between the fins gradually decreases from the outer row to the inner row. The invention further provides an air conditioner employing the aforementioned heat exchanger. According to the heat exchanger for air conditioning and the air conditioner, a structure space of a box body of an outdoor unit is fully utilized; the diameter of the U-shaped tubes is reasonably selected according to the refrigerant flowing direction and the state variation of refrigerants in the flowing process, and meanwhile, the space between the fins in different rows is adjusted; the variation of the refrigerant flowing state can be effectively utilized to improve the heat exchange efficiency, so that the refrigerant resistance loss can be decreased, the heat exchange efficiency of the whole heat exchanger can be effectively improved, and meanwhile, the cost of the heat exchanger can be decreased; the problem that the heat exchange effect is poor when the box body is determined can be effectively solved.
Description
Technical field
The invention belongs to air conditioning and refrigeration field of engineering technology, specifically, relate to a kind of heat exchanger of air conditioner and air-conditioner.
Background technology
The heat exchanger that current air-conditioner outdoor unit routine uses is two rows and U-tube caliber is identical, and spacing of fin is identical, but fails to play refrigerant heat exchange efficiency completely, and because user requires and the restriction of mounting condition, current casing is tending towards Miniaturization Design.When cabinet space one timing, the exchange capability of heat of two row's heat exchangers is not enough, partly arranges heat exchanger, therefore need again to drive large casing, cause cost to increase for raising exchange capability of heat needs to increase.Utilize self character simultaneously, under refrigeration mode, along with the flowing of refrigerant, refrigerant is changed to gas-liquid mixture phase by gaseous state in outdoor heat exchanger, final supercooled state and flow to throttling arrangement, the speed of refrigerant in flow process of different conditions is different, heat exchange efficiency is different, and the refrigerant flow rate especially under gaseous state is the fastest, selects comparatively Large Diameter Pipeline U-tube, can effectively reduce its fluid resistance loss, and then improve heat exchange efficiency.
How when ensureing that casing is constant and take into account cost simultaneously, improving the exchange capability of heat of heat exchanger, is then the problem that the present invention needs solution badly.
Summary of the invention
The object of the invention is to how can the exchange capability of heat of more effective raising heat exchanger, provides a kind of heat exchanger of air conditioner and air-conditioner.
For solving the problems of the technologies described above, the present invention is achieved by the following technical solutions:
A kind of heat exchanger of air conditioner, at least two row's heat exchangers that this heat exchanger is made up of the some U-tube be located on fin, the windward side of described heat exchanger is outer row, leeward side is interior row, also comprise inlet tube assembly, outlet assembly, the U-tube caliber of described heat exchanger increases gradually by draining into interior row outward, and the spacing of fin draining into interior row outward reduces gradually.
Compared with prior art, advantage of the present invention and good effect are:
The present invention makes full use of outdoor cabinet body structure space, in outdoor heat exchanger, gas-liquid mixture phase is changed to by gaseous state according to refrigerant, final supercooled state flows to throttling arrangement, choose reasonable U-tube caliber, U-tube caliber is drained into outer row reduced successively by interior, interior row's U-tube caliber 9.53mm, middle row's U-tube caliber 7.94mm, outer row's U-tube caliber 7.0mm, the caliber inside draining into outer row's U-tube reduces successively, adjustment different row spacing of fin simultaneously, inside drain into outer row's spacing of fin and be respectively 1.4mm, 1.6mm, 1.8mm
Spacing of fin is drained into outer row increased successively by interior, thus row's heat exchange area in improving, outer row's spacing of fin is greater than interior row simultaneously, can windage be reduced, can effectively improve heat exchanger heat exchange efficiency, give full play to heat exchanger heat exchange efficiency, improve the performance of air-conditioner, reduce restriction loss, simultaneously cost-saving.
The present invention can effectively utilize refrigerant to be outwards drained through in journey by drainage in outdoor heat exchanger, gas-liquid mixture phase is changed to by gaseous state, final supercooled state flows to throttling arrangement, and the U-tube caliber of heat exchanger is drained into outer row reduced successively by interior, and spacing of fin is drained into outer row increased successively by interior, thus raising heat exchange efficiency, reduce refrigerant drag losses, effectively improve heat exchanger overall heat exchange efficiency, reduce heat exchanger cost simultaneously, effective solution when casing is determined, the problem of heat transfer effect difference.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the overall structure schematic diagram of heat exchanger of air conditioner specific embodiment of the present invention;
Fig. 2 is that the refrigerant of heat exchanger of air conditioner specific embodiment of the present invention flows to schematic diagram;
Fig. 3 is efficiency APF value comparison diagram before and after Separated wall type transducer air conditioning is optimized;
Fig. 4 is ability comparison diagram before and after Separated wall type transducer air conditioning is optimized;
Symbol in figure and explanation thereof:
1, outer row; U1, outer row's U-tube; 2, middle row; U2, middle row's U-tube; 3, interior row; U3, interior row's U-tube; 4, fin; 5, inlet tube assembly; 51, general import pipe; 52, knockout; 53, inlet tube is divided; 6, outlet assembly; 61, outlet is divided; 62, current divider; 63, gathering tube; 64, general export pipe; 7, super cooled sect; 8, elbow;
The direction of arrow in figure represents the flow direction of refrigerant under refrigeration mode.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further detailed explanation.Should be appreciated that embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
In describing the invention, it will be appreciated that, term " on ", D score, " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.
Specifically, shown in figure 1, this embodiment is a kind of heat exchanger of air conditioner outdoor machine, this heat exchanger uses as condenser in cooling mode, it forms three row's heat exchangers by the some U-tube be located on fin 4, outer row 1 is followed successively by by windward side to the leeward side of heat exchanger, middle row 2 and interior row 3, outer row 1 is identical with the height of middle row 2, and be greater than the height of interior row 3, length, the U-tube number of interior row 3 is less than outer row 1 and middle row 2, namely 2.5 usually said row's heat exchangers, such setting correspondingly reduces heat exchanger cost, the U-tube caliber of heat exchanger is increased to interior row 1 gradually by outer row 3, and row 3 reduces gradually to fin 4 spacing of interior row 1 outward, wherein, the U-tube U1 caliber of outer row 1 is 7.0mm, the U-tube U2 caliber of middle row 2 is 7.94mm, the U-tube U3 caliber of interior row 3 is 9.53mm, U-tube caliber is all select according to the caliber scope of current air-condition heat exchanger industry universal.
Fin 4 spacing of outer row 3 is 1.8mm, and fin 4 spacing of middle row 2 is 1.6mm, and fin 4 spacing of interior row 3 is 1.4mm.
At the leeward side of heat exchanger, inlet tube assembly 5 is set, windward side arranges outlet assembly 6, inlet tube assembly 5 is connected to form by general import pipe 51, knockout 52 and five points of inlet tubes 53 successively, outlet assembly 6 is made up of five points of outlets 61, current divider 62, gathering tube 63 and general export pipe 64, and each point of inlet tube 53 corresponds to a point of outlet 61.
Refrigerant heat exchange implementation procedure:
As shown in Figure 1, 2, under refrigeration mode, the import of outdoor heat exchanger refrigerant is entered by interior row 3, is connected by elbow 8, from left to right, finally flowed out by outer row 1, the direction of wind is from right to left in refrigerant flowing, realize refrigerant countercurrent flow, increase heat transfer temperature difference large, improve heat exchange efficiency.Refrigerant is shunted via inlet tube assembly 5, enter heat exchanger respectively through five points of inlet tubes 53 and carry out heat exchange, first the U-tube U3 of interior row 3 is entered, flow from the bottom to top in interior row 3, then the U-tube U2 of row 2 in flowing into, flow from the bottom to top in middle row 2, then the U-tube U1 of outer row 1 is flowed into, arrange in 1 outside and from top to bottom flow, finally flow into corresponding point outlet 61 by the U-tube U1 of outer row 1, five points of outlets are gathered by current divider 62 and enter gathering tube 63, the super cooled sect 7 that gathering tube 63 enters condenser carried out cold, flow out through general export pipe 64 afterwards, terminate the heat transfer process of refrigerant in condenser assembly.From right to left, fin 4 spacing is by the spacing of fin 1.4mm arranged in the left side to the spacing of fin 1.6mm of middle row, then the spacing of fin 1.8mm arranged to the right, increases successively from left to right, effectively reduces the windage of interior row 3 for wind direction, row's 3 heat exchange efficiencies in effectively improving.
Five streams of this heat exchanger are substantially identical.
In refrigerant flow process, import department is high pressure gaseous refrigerant, and U3 caliber is comparatively large, can effectively reduce fluid resistance loss, improves heat exchange efficiency; When flowing to middle row 2, be gas-liquid mixture phase, now U2 caliber is less than U3, and caliber reduces according to the characteristic of refrigerant, improves heat exchange efficiency, reduces costs; Equally, when refrigerant flows to outer row 1, arrived close to liquid, now U1 caliber is less than U2, and caliber reduces further according to the characteristic of refrigerant, while improving heat exchange efficiency, reduces costs.
Middle row 2 is identical with the spacing of fin of outer row 1, and flap-type is identical, is convenient to manufacture processing.The spacing of fin of interior row 3 is less than middle row 2 and outer row 1, arranges the windage of 2 and outer row 1 in favourable reduction, the air quantity of row 3 in relatively improving, the heat exchange efficiency of row 3 in improving.
Certainly, according to the size of off-premises station casing, the U-tube number of heat exchanger can respective change, and usually, U-tube adopts caliber to be 5.0-9.53mm, spacing of fin scope 1.2-1.8mm.U-tube caliber is all select according to current air-condition heat exchanger industry experience and conventional caliber scope.
Above-described embodiment arranges condenser by employing 2.5, the U-tube of interior mining 9.53mm caliber, the U-tube of middle mining 7.94mm caliber, the U-tube of outer mining 7.0mm caliber, the caliber draining into interior row's U-tube outward increases successively, and draining into interior row's spacing of fin is respectively 1.8mm outward, 1.6mm, 1.4mm, spacing reduces successively, the change of refrigerant fluidised form can be effectively utilized to improve heat exchange efficiency by this design, reduce refrigerant drag losses, effective raising heat exchanger overall heat exchange efficiency, reduce heat exchanger cost simultaneously, effective solution is when casing is determined, the problem of heat transfer effect difference.
Specifically,
1, the change of U-tube caliber: under the prerequisite that air-conditioner outdoor unit casing is fixing, the U-tube caliber draining into outer row in heat exchanger of the present invention reduces gradually, and refrigerant moves in process at the interior effluent stream that drains into, and is become gas-liquid mixture phase from gaseous state, liquid accounting increases gradually, and flow velocity reduces; The U-tube caliber of interior row is maximum, the refrigerant of gaseous state is in interior row's flow process, and resistance is little, flows more smooth and easy, effective raising heat exchange efficiency, and the U-tube caliber of middle row and outer row is according to the change of refrigerant state, liquid refrigerants becomes many, and gaseous coolant is less, in flow process, comparative resistance is less, and U-tube caliber reduces gradually, and the basis meeting heat exchange efficiency reduces holistic cost;
2, the change of spacing of fin: same, under the prerequisite that air-conditioner outdoor unit casing is fixing, the spacing of fin of heat exchanger of the present invention is drained into outer row increased successively by interior, interior row's spacing of fin is little, in relative raising, row's heat exchange area, meets the needs of gaseous coolant heat exchange, and outer row's spacing of fin is greater than interior row simultaneously, can windage be reduced, improve overall heat exchange efficiency.
The present invention is according to the change of its state in refrigerant flow process, and choose reasonable U-tube caliber, adjustment different row spacing of fin, can effectively improve heat exchanger heat exchange efficiency simultaneously, improves the performance of air-conditioner, reduces restriction loss, simultaneously cost-saving.
Separated wall type transducer air conditioning, efficiency APF value judges according to GB21455-2013.The specified refrigerating capacity 3500W of institute's experimental machine type, efficiency grade 1 grade; Before and after optimizing, efficiency contrast as shown in Figure 3: after optimization, APF value meets Standard, and has certain design margin.Before and after optimizing, ability contrast as shown in Figure 4: after optimizing, ability improves about 7%, and while meeting Capability Requirement, design margin increases, and Consumer's Experience can improve.
The above is only preferred embodiment of the present invention, and be not restriction the present invention being made to other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the Equivalent embodiments of equivalent variations.But everyly do not depart from technical solution of the present invention content, any simple modification, equivalent variations and the remodeling done above embodiment according to technical spirit of the present invention, still belong to the protection domain of technical solution of the present invention.
Claims (9)
1. a heat exchanger of air conditioner, at least two row's heat exchangers that this heat exchanger is made up of the some U-tube be located on fin, the windward side of described heat exchanger is outer row, leeward side is interior row, also comprise inlet tube assembly, outlet assembly, is characterized in that: the U-tube caliber of described heat exchanger increases gradually by draining into interior row outward, and the spacing of fin draining into interior row outward reduces gradually.
2. heat exchanger of air conditioner according to claim 1, is characterized in that: described U-tube adopts caliber to be 5.0-9.53mm.
3. heat exchanger of air conditioner according to claim 1, is characterized in that: described spacing of fin scope is 1.2-1.8mm.
4. heat exchanger of air conditioner according to any one of claim 1-3, it is characterized in that: described heat exchanger comprises three rows, outer row, middle row and interior row is followed successively by by windward side to leeward side, the U-tube caliber of described outer row is 7.0mm, the U-tube caliber of described middle row is 7.94mm, and the U-tube caliber of described interior row is 9.53mm.
5. heat exchanger of air conditioner according to claim 4, it is characterized in that: the spacing of fin of described outer row is 1.8mm, the spacing of fin of described middle row is 1.6mm, and the spacing of fin of described interior row is 1.4mm.
6. heat exchanger of air conditioner according to claim 4, is characterized in that: described outer row is identical with the height of middle row, and is greater than the height of described interior row.
7. heat exchanger of air conditioner according to any one of claim 1-3, it is characterized in that: described inlet tube assembly is connected to form by general import pipe, knockout and a point inlet tube successively, described outlet assembly is made up of point outlet, current divider, gathering tube and a general export pipe, and each point of inlet tube corresponds to a point of outlet.
8. heat exchanger of air conditioner according to claim 7, it is characterized in that: refrigerant enters the U-tube of described interior row by each described point inlet tube, flow from the bottom to top in described interior row, then the U-tube of described middle row is flowed into, flow from the bottom to top in described middle row, then flow into the U-tube of described outer row, from top to bottom flow in described outer row, finally flow into corresponding point outlet by the U-tube of outer row.
9. an air-conditioner, is characterized in that adopting heat exchanger of air conditioner according to any one of the claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511002026.0A CN105423448A (en) | 2015-12-29 | 2015-12-29 | Heat exchanger for air conditioning and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511002026.0A CN105423448A (en) | 2015-12-29 | 2015-12-29 | Heat exchanger for air conditioning and air conditioner |
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| Publication Number | Publication Date |
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| CN105423448A true CN105423448A (en) | 2016-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511002026.0A Pending CN105423448A (en) | 2015-12-29 | 2015-12-29 | Heat exchanger for air conditioning and air conditioner |
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| CN (1) | CN105423448A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106247820A (en) * | 2016-06-21 | 2016-12-21 | 四川长虹电器股份有限公司 | A kind of reduced pipe heat exchanger and air conditioner |
| CN106440525A (en) * | 2016-09-27 | 2017-02-22 | 广东美的制冷设备有限公司 | Circular heat exchanger and air conditioner |
| CN108036669A (en) * | 2017-11-22 | 2018-05-15 | 广东美的制冷设备有限公司 | Fin component, heat exchanger and air conditioner room unit |
| CN108716789A (en) * | 2018-06-20 | 2018-10-30 | 珠海格力电器股份有限公司 | Heat exchanger, liquid separation control device, air conditioner and its control method |
| CN109373797A (en) * | 2018-12-03 | 2019-02-22 | 珠海格力电器股份有限公司 | Heat exchanger tube, heat exchanger and air conditioner |
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| CN202126026U (en) * | 2011-06-09 | 2012-01-25 | 海信（山东）空调有限公司 | Condenser for air conditioner outdoor unit |
| CN202171290U (en) * | 2011-06-21 | 2012-03-21 | 海信（山东）空调有限公司 | Air conditioner outdoor unit condenser |
| JP2012149845A (en) * | 2011-01-20 | 2012-08-09 | Mitsubishi Electric Corp | Unit of air conditioning apparatus, and air conditioning apparatus |
| CN203857713U (en) * | 2014-04-28 | 2014-10-01 | 广东美的集团芜湖制冷设备有限公司 | Heat exchanger and air conditioner |
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Patent Citations (5)
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| CN200965374Y (en) * | 2006-10-20 | 2007-10-24 | 广东科龙电器股份有限公司 | A multi-tube condenser |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106247820A (en) * | 2016-06-21 | 2016-12-21 | 四川长虹电器股份有限公司 | A kind of reduced pipe heat exchanger and air conditioner |
| CN106440525A (en) * | 2016-09-27 | 2017-02-22 | 广东美的制冷设备有限公司 | Circular heat exchanger and air conditioner |
| CN108036669A (en) * | 2017-11-22 | 2018-05-15 | 广东美的制冷设备有限公司 | Fin component, heat exchanger and air conditioner room unit |
| CN108716789A (en) * | 2018-06-20 | 2018-10-30 | 珠海格力电器股份有限公司 | Heat exchanger, liquid separation control device, air conditioner and its control method |
| CN109373797A (en) * | 2018-12-03 | 2019-02-22 | 珠海格力电器股份有限公司 | Heat exchanger tube, heat exchanger and air conditioner |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 266736 Hisense Road 1, South Village Town, Pingdu City, Qingdao, Shandong Applicant after: Hisense (Shandong) Air-conditioning Co., Ltd. Address before: 266100 Zhuzhou Road, Laoshan District, Qingdao, Shandong Province, No. 151 Applicant before: Hisense (Shandong) Air-conditioning Co., Ltd. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160323 |