CN1284957C - Heat exchanger - Google Patents
Heat exchanger Download PDFInfo
- Publication number
- CN1284957C CN1284957C CNB011216336A CN01121633A CN1284957C CN 1284957 C CN1284957 C CN 1284957C CN B011216336 A CNB011216336 A CN B011216336A CN 01121633 A CN01121633 A CN 01121633A CN 1284957 C CN1284957 C CN 1284957C
- Authority
- CN
- China
- Prior art keywords
- pipe
- heat exchanger
- row
- air
- pipe row
- 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.)
- Expired - Fee Related
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Classifications
-
- 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
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
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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
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
- F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
A heat exchanger comprising tubes forming a refrigerant channel and fins formed on the outer circumference of the tubes, the tubes comprises tubes in the front rows touching the incoming air at first, and tubes in the at least one rear row touching the air passed through the front row wherein the tubes in the front or rear row are provided with a part fixed with no tube. so it can provide a small lightweight heat exchanger in which thermal efficiency is enhanced and cost is reduced even if the area of front row is decreased.
Description
Technical field
The present invention relates to a kind of heat exchanger, particularly have the heat exchanger of the improved copper pipe arrangement of refrigerant flowpath.
Background technology
Heat exchanger is used in air-conditioner and the heat pump usually, is used for condensation or vaporized refrigerant, as R-22 and water.As shown in Figure 1, the heat exchanger of association area has the pipe 2 that forms refrigerant flowpath and is inserted in a plurality of fin 3 that are used to increase heat exchange area on the pipe 2, wherein manages 2 and is arranged to the multilayer of fixed intervals, and be used for many rows of tapped refrigerant flow path.In heat exchanger 1 was used as the air-conditioner of condenser, the cold-producing medium by compressor compresses flowed in pipe 2, carries out heat exchange with the low temperature extraneous air that enters heat exchanger and be condensed in the flow process of cold-producing medium.In heat exchanger is used as the air-conditioner of evaporimeter, mobile in pipe 2 by the cold-producing medium of capillary decompression, carry out heat exchange with the high temperature room air that enters heat exchanger, and flash to low-temperature refrigerant gas.When the heat exchange carried out in the heat exchanger 1 with multi coil between cold-producing medium and the air, along with air flows through preceding pipe row 2, air is arranged the cold-producing medium that flows in 2 and at first contact with air with preceding pipe and is carried out main heat exchange and absorb a large amount of heat, along with air flows through and leaves heat exchanger 1 around rear of tube 2, the back pipe row 2 of air and front-seat back carries out the auxiliary heat exchange.Yet, multi coil is set in heat exchanger to be used to improve under the situation of heat exchanger effectiveness, for example, when the size that will be compressed to 7000Btu/h rank off-premises station when 9000Btu/h rank off-premises station keeps refrigerating capacity constant simultaneously, row's number of the pipe of existing 7000Btu/h rank heat exchanger increases, and the height of 7000Btu/h rank off-premises station remains unchanged simultaneously, to increase heat exchange area.Along with the increase of heat exchanger size, the change in size of the covering frame of air-conditioner outdoor unit, and weakened the effect that reduces cost that produces under the interchangeable situation of off-premises station frame.Because copper is expensive, arrange copper pipe has increased cost more.The increase of pipe row number has also increased the performance of heat exchange excessively, makes not match between heat exchanger ability and the air-conditioner system ability.
Summary of the invention
Therefore, the present invention relates to solve basically because the heat exchanger of one or more problems that limitation and defective caused of correlation technique.
The object of the present invention is to provide a kind of heat exchanger, no pipe portion wherein is set, be used to optimize heat exchange performance and improve system effectiveness to set up flow path.
Another object of the present invention is to provide a kind of can reduce production costs and easy-to-install heat exchanger.
Other features and advantages of the present invention propose in the following description, and its part will be more obvious by specification, perhaps can know from experience by practice of the present invention.Purpose of the present invention and other advantage can realize and obtain by the structure of specifically noting in written description, claims and appended accompanying drawing.
For realizing these and other some advantage and according to purpose of the present invention, such as embodiment and broadly described, heat exchanger comprises the pipe that is used to form refrigerant flowpath, be installed in the fin of the periphery of pipe, wherein pipe comprises the pipe among the preceding pipe row that air at first is in contact with it, and the pipe among at least one back pipe row of being in contact with it of the air by preceding pipe row, no pipe portion is drawn together in preceding pipe row and back pipe package, and preceding pipe row's no pipe portion and back pipe row's no pipe portion is not overlapping.
Be understood that the roughly description of front and the detailed description of back are exemplary and explanat, and attempt to provide the further explanation of the present invention for required protection.
Description of drawings
Provide to further understanding of the present invention and in conjunction with and the accompanying drawing that constitutes the part of specification shows embodiments of the invention, and and specification explain principle of the present invention together.
In the accompanying drawings:
Fig. 1 is the perspective view of correlation technique flow path;
Fig. 2-5 shows the part of the pipe arrangement of the embodiment of the invention;
Fig. 6 shows the part that heat exchanger has a plurality of pipe rows, is used to schematically show the flow velocity that air flows through heat exchanger; And
Fig. 7 shows the perspective view of the crooked heat exchanger of the present invention.
The specific embodiment
Below will be in detail with reference to the preferred embodiments of the present invention, its example is shown in the drawings.In explanation of the present invention, same element is given identical title and Reference numeral, omits extra explanation.The present invention's suggestion provides a kind of heat exchanger with a plurality of pipe rows, be used in the compression heat exchanger size, obtaining identical heat exchange amount, wherein do not have pipe portion and be arranged among the preceding pipe row that air at first is in contact with it, and/or among at least one back pipe row of being in contact with it of the air by preceding pipe row.
That is to say, the no pipe portion before the heat exchanger of first embodiment of the invention is included among one of pipe row or back pipe row, the pipe except that no pipe portion interconnects and forms flow path, and this is not shown in the drawings.
With reference to figure 2, different with the heat exchanger of first embodiment, the heat exchanger of second embodiment of the invention all comprises no pipe portion preceding pipe row and back pipe row.In this embodiment, the height of no pipe portion in preceding pipe row and back pipe row is not overlapping, causes having a plurality of no pipe portion 4 at the right lower quadrant of heat exchanger 1 and upper left quarter.
With reference to Fig. 3, the heat exchanger of third embodiment of the invention all comprises no pipe portion in preceding pipe row and back pipe row, wherein there is not the quantity of pipe portion in preceding pipe row less than the quantity in the pipe row of back, provide no pipe portion 4 with right lower quadrant at heat exchanger 1, one of them pipe does not insert the fin 3 of heat exchanger 1, and provide no pipe portion 4 at the upper left quarter of heat exchanger 1, wherein a plurality of pipes do not insert the fin 3 of heat exchanger 1.
With reference to Fig. 4, the heat exchanger of fourth embodiment of the invention is in the no pipe portion that equal number is drawn together in preceding pipe row and back pipe package, but it does not in height overlap each other.
With reference to Fig. 5, the heat exchanger of fifth embodiment of the invention all comprises no pipe portion preceding pipe row and back pipe row, wherein there is not the quantity of pipe portion in preceding pipe row greater than the quantity of no pipe portion in the pipe row of back, cause upper right quarter at heat exchanger 1 that three no pipe portions 4 and the no pipe of under three no pipe portions 4 at least one portion 4 are provided continuously, and the quantity of no pipe portion 4 is less than the no pipe portion among the preceding pipe row in the left part of heat exchanger 1, and not overlapping with preceding pipe row.
The reason that forms flow path in heat exchanger of the present invention can description below: when this heat exchanger application in the off-premises station of air-conditioner during as evaporimeter, the heat-shift of air is through over-heat-exchanger.In this embodiment, the off-premises station of air-conditioner comprises: be used for compressed refrigerant compressor, fin-tube type heat exchanger of the present invention, blow extraneous air so that the fan of the heat of cold-producing medium and extraneous air exchange, the drive unit of drive fan.Heat exchanger 1 is positioned at a side of outdoor shell, and fan is positioned at the opposite side of heat exchanger, and air enters and discharges by the hole that forms in the off-premises station.Evaporimeter and similar device are arranged in indoor machine of air-conditioner, are used for cooling off indoor temperature by evaporation heat.After above-mentioned air-conditioner was started working, by utilizing the revolving force of motor, compressor was compressed into HTHP with cold-producing medium and discharges towards the heat exchanger 1 as condenser.The high temperature and high pressure cold-producing medium that is in high heated condition enters heat exchanger of the present invention by an inlet or two or more than two inlets, and enter expansion valve, along with cold-producing medium conversion process gas-liquid two-phase state and sub-cooled state, cold-producing medium carries out heat exchange in flowing through the process of pipe.If the pressure drop of cold-producing medium is little, then cold-producing medium enters condenser from compressor by an inlet; If the pressure drop of cold-producing medium is big, then cold-producing medium enters condenser by a plurality of inlets.Flow through in the process of many rows copper pipe of heat exchanger at cold-producing medium, between pipe 2 and cold-producing medium, carry out heat exchange, along with fan rotates, its heat and the airborne heat heat exchange that blows to heat exchanger.Figure 6 illustrates the air-flow in the heat exchanger, wherein the air of inflow heat exchanger 1 contact with preceding pipe row, and with passing through up and down of the pipe among the pipe row in the past at a high speed, does not have the quiescent centre 5 of air-flow simultaneously in rear portion of each pipe 2 formation.In view of the above, flow through with preceding pipe row in the back pipe row of the angled setting of pipe in the flow velocity of air of pipe accelerate, this is because about 45 ° of the pipe 2 in preceding pipe row form quick air-flows.
Simultaneously, owing to the no pipe of existence portion 4 in the pipe row of the front and back of heat exchanger 1 of the present invention, the temperature that is caused by heat exchanger when pipe is arranged before air flows through raises and raises less than the temperature that is caused by heat exchanger in the correlation technique.Before no pipe portion 4 among the pipe row reduced the heat exchange amount of locating air and cold-producing medium preceding pipe row, the back pipe row that flows through of the flow velocity when entering heat exchanger to be higher than it along with air by preceding pipe row, pipe row locates to carry out heat exchange in the back.Therefore, heat exchange amount between cold-producing medium and the back pipe emptying gas is equal to or greater than the heat exchange amount preceding pipe row, this shows: the heat exchanger effectiveness before not having cold-producing medium to flow through under the situation of pipe row's copper pipe is higher than does not have flow through heat exchanger effectiveness under back pipe row's the situation of copper pipe of cold-producing medium, and this is because to make that the heat exchanger effectiveness that row locates is managed in the back higher when the mutually produced simultaneously eddy current of the temperature difference between fin, pipe and the air.The heat exchange amount that obtains in the various embodiments of the present invention is as follows.
Fig. 2 illustrates the second embodiment of the present invention, and it has the no pipe portion of equal number in preceding pipe row and back pipe row, and the air heat flux that flows through no pipe portion is zero, and is having the temperature of managing insertion portion to be about 332K simultaneously.Therefore, the air heat exchange amount of the heat exchanger by inventing second embodiment is calculated as mass air flow rate and specific heat product, and the result is 7499BTU/h.Heat exchange amount is the numerical value from the ideal zone acquisition of heat exchanger, and in this ideal zone, the mixing of cold-producing medium formation gas phase and liquid phase mutually.
Fig. 3 illustrates the third embodiment of the present invention, and it has a plurality of no pipe portion in back pipe row, and the air heat exchange amount of ideal zone is 7575BTU/h.
Fig. 4 shows the fourth embodiment of the present invention, and it has identical no pipe portion and not overlapping each other in preceding pipe row and back pipe row, and the air heat exchange amount of ideal zone is higher relatively, is 7581BTU/h.When cold-producing medium initially enters heat exchanger and is 1409BTU/h as the out-of-date air heat exchange amount of flow of steam at high temperature from compressor.Air heat exchange amount when cold-producing medium flows through ideal zone and flows through the undue cooled region of cold-producing medium is 1854BTU/h.Finally, the heat exchange total amount that air obtains from All Ranges is in the scope of 10844BTU/h, and this test data shows that difference with the heat exchange amount that heat exchanger obtained of actual configuration is in 10% scope.
Fig. 5 shows the fifth embodiment of the present invention, and the quantity of no pipe portion is more than back pipe row among the preceding pipe row who at first contacts with air, and the heat exchange amount of air and cold-producing medium is the highest, is 7612BTU/h.
That is to say, as shown in the Examples since cold-producing medium and air velocity faster among the back pipe row heat exchange amount between the air big, so the no pipe portion among the preceding pipe row that air at first is in contact with it is many more, heat exchanger effectiveness is just high more.
Simultaneously, when heat exchanger 1 bends to " " form so that position in its air-conditioner that will install and form to be installed, in preceding pipe row under the situation of the 5th embodiment of the more heat exchanger 1 of no pipe portion, if the gap in not having the fin section of pipe is widened greatly, then because the relatively poor heat exchanger effectiveness that the variation gap of fin 3 causes makes that the heat exchanger effectiveness of this embodiment is relatively poor.Under the situation of the 3rd embodiment of the also more heat exchanger 1 of no pipe portion, pressurized makes heat exchanger have defective to fin 3 owing to the bending force that applies in back pipe row.In contrast, as shown in Figure 7, arrange under the situation of the 4th embodiment that has the no pipe portion of same quantity and do not overlap each other preceding pipe row and back pipe, it provides good bending machining intensity, and the heat exchanger of fourth embodiment of the invention is preferably as the heat exchanger of needs bending.
Simultaneously, enter under the situation of heat exchanger from compressor, a plurality of pipes rows are set are used to increase heat exchange area, and only remove a pipe at the cold-producing medium of overcompression, and the interconnection of other pipe.Different therewith, under heater is installed in situation between compressor and the indoor expansion valve, for receive low temperature from expansion valve, low pressure refrigerant and by with the heat exchange vaporized refrigerant of room air, heat exchanger only has pipe 2 in a pipe row, be used to form the flow path of cold-producing medium, wherein be mixed with gas phase and liquid phase.When needing the air-conditioner of small size and lightweight, the height of heat exchanger reduces and pipe row reduces, and by regulating no pipe portion, has solved the mismatch problem of heat exchange amount.According to required heat exchange amount, copper pipe can be removed from the heat exchanger of correlation technique and form new flow path, and it can reduce production costs by the heat exchanger that uses correlation technique.In BENDING PROCESS,, prevent to damage heat exchanger so from each comb of the heat exchanger of the crooked installation site form that is assembled to air-conditioner, alternately remove copper pipe because kept the bending strength of heat exchanger.
For those skilled in the art, can carry out various distortion and change to heat exchanger of the present invention without departing from the spirit and scope of the present invention.Therefore, the present invention attempts to cover various distortion and change and the equivalent thereof in the appended claims scope.
Claims (5)
1. heat exchanger comprises:
Be used to form the pipe of refrigerant flowpath; And
Be installed in the fin of the periphery of described pipe,
Wherein, pipe comprises the pipe among at least one back pipe row that the preceding pipe row's that air at first is in contact with it pipe and the air by preceding pipe row be in contact with it, and no pipe portion is drawn together in preceding pipe row and back pipe package, and the no pipe portion among no pipe portion among the preceding pipe row and the back pipe row is not overlapping.
2. heat exchanger as claimed in claim 1 is characterized in that, described before among the pipe row quantity of no pipe portion greater than the quantity of no pipe portion among the pipe row of back.
3. heat exchanger as claimed in claim 1 is characterized in that, described before among the pipe row quantity of no pipe portion less than the quantity of no pipe portion among the pipe row of back.
4. heat exchanger as claimed in claim 1 is characterized in that, described before among the pipe row quantity of no pipe portion equal the quantity of no pipe portion among the pipe row of back.
5. heat exchanger as claimed in claim 3 is characterized in that described heat exchanger is bent.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2000-0059472A KR100388801B1 (en) | 2000-10-10 | 2000-10-10 | A heat exchanger |
| KR59472/00 | 2000-10-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1348086A CN1348086A (en) | 2002-05-08 |
| CN1284957C true CN1284957C (en) | 2006-11-15 |
Family
ID=19692715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011216336A Expired - Fee Related CN1284957C (en) | 2000-10-10 | 2001-06-19 | Heat exchanger |
Country Status (4)
| Country | Link |
|---|---|
| JP (2) | JP2002115986A (en) |
| KR (1) | KR100388801B1 (en) |
| CN (1) | CN1284957C (en) |
| AU (1) | AU783130B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3807408B2 (en) * | 2004-03-31 | 2006-08-09 | ダイキン工業株式会社 | Heat exchanger |
| CN102155824A (en) * | 2011-03-03 | 2011-08-17 | 广东美的电器股份有限公司 | Heat exchanger |
| JP7208558B1 (en) | 2021-09-27 | 2023-01-19 | ダイキン工業株式会社 | heat exchangers and air conditioners |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR0127598Y1 (en) * | 1995-02-15 | 1999-01-15 | 김광호 | Heat exchanger |
| JP3918284B2 (en) * | 1998-02-26 | 2007-05-23 | ダイキン工業株式会社 | Cross fin tube heat exchanger |
-
2000
- 2000-10-10 KR KR10-2000-0059472A patent/KR100388801B1/en not_active IP Right Cessation
-
2001
- 2001-05-30 AU AU48106/01A patent/AU783130B2/en not_active Ceased
- 2001-06-14 JP JP2001180011A patent/JP2002115986A/en active Pending
- 2001-06-19 CN CNB011216336A patent/CN1284957C/en not_active Expired - Fee Related
-
2004
- 2004-08-04 JP JP2004004666U patent/JP3107032U/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002115986A (en) | 2002-04-19 |
| KR100388801B1 (en) | 2003-06-25 |
| CN1348086A (en) | 2002-05-08 |
| AU783130B2 (en) | 2005-09-29 |
| AU4810601A (en) | 2002-04-11 |
| JP3107032U (en) | 2005-01-27 |
| KR20020028450A (en) | 2002-04-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20061115 Termination date: 20180619 |