CN204593963U - Parallel-flow heat exchanger - Google Patents
Parallel-flow heat exchanger Download PDFInfo
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- CN204593963U CN204593963U CN201520176954.8U CN201520176954U CN204593963U CN 204593963 U CN204593963 U CN 204593963U CN 201520176954 U CN201520176954 U CN 201520176954U CN 204593963 U CN204593963 U CN 204593963U
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Abstract
The utility model provides a kind of parallel-flow heat exchanger, it comprises header, be plugged in the some flat tubes in header, the refrigerant pipe being connected to the fin between adjacent flat tube and being communicated on header, header has the first end face and the second end face, refrigerant pipe is communicated in header by the first end face, multiple baffler is provided with in header, each baffler is arranged on the length direction of header, the height of each baffler is reduced gradually by the direction of the first end face to the second end face of header, the plate face bearing of trend of each baffler is by the axis of symmetry of header.When refrigerant pipe is accessed by an end face of header, refrigerant enters in it by one end of header, each baffler makes the refrigerant of near-end be subject to larger disturbance, rate-of flow in the flat tube of far-end is roughly the same with the rate-of flow of near-end flat tube, parallel-flow heat exchanger in the uniformity of temperature profile of diverse location, thus makes the heat exchange efficiency of parallel flow heat exchanger device greatly improve.
Description
Technical field
The utility model belongs to heat exchanger for air conditioner technical field, particularly relates to a kind of parallel-flow heat exchanger.
Background technology
China is that bauxite resource enriches, and the country of copper resource shortage.Air-conditioning Energy Efficiency Standard rises year by year, and will certainly consume a large amount of copper resources, causes copper valency rapidly to go up, the risk of copper resource scarcity.Therefore aluminium will become the inexorable trend of air-condition heat exchanger development from now on for copper technology.
Parallel-flow heat exchanger is exactly a kind of full aluminium heater, and it, as a kind of new type heat exchanger for air-conditioning, is applied more and more widely.But, when existing parallel-flow heat exchanger is as evaporimeter, due to evaporative medium enter header after be gas-liquid two-phase state, make rate-of flow in flat tube very uneven, therefore, some manufactures commercial city flow distributing and collecting Manifold technology in application at present, but these patent difficulty of processing are larger, and when unsteady drying, because far-end resistance is large, rate-of flow in the flat tube of far-end will be less than near-end rate-of flow, the Media Ratio that result in part flat tube is more abundant, the rate-of flow of part flat tube is not enough, this will certainly cause parallel flow heat exchanger device even at the temperature distributing disproportionation of diverse location, thus the heat exchange efficiency of parallel flow heat exchanger device is reduced.
Utility model content
The purpose of this utility model is to provide a kind of parallel-flow heat exchanger, is intended to solve cold-producing medium maldistribution that existing parallel-flow heat exchanger exists in unstable state refrigerant flow situation and the low problem of the heat exchange efficiency caused.
The utility model realizes like this, a kind of parallel-flow heat exchanger, it comprises header, be plugged in the some flat tubes in described header, the refrigerant pipe being connected to the fin between adjacent described flat tube and being communicated on described header, described header has the first end face and second end face relative with described first end face, described refrigerant pipe is communicated in described header by described first end face, multiple baffler is provided with in described header, baffler described in each is arranged on the length direction of described header, the height of baffler described in each is reduced gradually by described first end face to the direction of described second end face of described header, the plate face bearing of trend of baffler described in each passes through the axis of symmetry of described header.
Further, baffler described in each is evenly arranged on the length direction of described header.
Further, described header has the first side and second side relative with described first side, and flat tube described in each is inserted by the first side of described header, and described baffler is erected on the inner surface of the second side of described header.
Further, the tube chamber volume of described header is increased gradually by the direction of described first end face to described second end face.
Further, the distance between the inserting end of flat tube described in each and the second side of described header is increased gradually by the direction of described first end face to described second end face.
Further, the degree of depth that flat tube described in each inserts in described header is identical, and the cross-sectional area of described header is increased gradually by the direction of described first end face to described second end face.
Further, the degree of depth that flat tube described in each inserts in described header is reduced gradually by the direction of described first end face to described second end face, and the cross-sectional area of described header is increased gradually by the direction of described first end face to described second end face.
Further, the degree of depth that flat tube described in each inserts in described header is reduced gradually by the direction of described first end face to described second end face, and the cross-sectional area of described header is all identical in the whole length of this header.
Further, the inserting end line shape of flat tube described in each in line, this straight line with perpendicular to described flat tube direction of insertion direction shape in an angle, the scope of this angle is 5 degree to 40 degree.
Further, described header is spliced by axially extended first splice and the second splice, described first splice and described second splice are axially spliced to form tube chamber mutually, described flat tube is inserted by described first splice, described second splice by described first end face of described header to the range of tilt angles that axis becomes of the direction of described second end face and described first splice between 5 °-40 °, the cavity volume of described tube chamber is increased gradually by the direction of described first end face extremely described second end face.
When refrigerant pipe is accessed by an end face of header, refrigerant enters in it by one end of header, by multiple baffler of arranging on the length direction of described header, the height of baffler described in each is reduced gradually by described first end face to the direction of described second end face of described header, the refrigerant of near-end is made to be subject to larger disturbance, and refrigerant is distally ceaselessly supplied by near-end, place far away, the position of distance refrigerant pipe installation is made to have enough coolant medias, thus, for in unstable state situation, in i.e. variable working condition situation, when as little in flow, rate-of flow in the flat tube of far-end is roughly the same with the rate-of flow of near-end flat tube, make the Media Ratio of whole flat tube more abundant, parallel flow heat exchanger device is in the uniformity of temperature profile of diverse location, thus the heat exchange efficiency of parallel flow heat exchanger device is improved greatly, the Machining of Pick-up Tube technique of parallel-flow heat exchanger of the present utility model and simple and reasonable, facilitate the installation of parallel-flow heat exchanger in air-conditioning on the one hand, ensure that when different load, different gas-liquid rate-of flow on the other hand, the uniformity of distribution.
Accompanying drawing explanation
Fig. 1 is the structural representation of the parallel-flow heat exchanger that the utility model first embodiment provides.
Fig. 2 is the sectional view of the header of the parallel-flow heat exchanger of Fig. 1, illustrated therein is part flat tube and inserts in header.
Fig. 3 is the structural representation of the parallel-flow heat exchanger that the utility model second embodiment provides.
Fig. 4 is the structural representation of the parallel-flow heat exchanger that the utility model the 3rd embodiment provides.
Label involved in accompanying drawing is detailed as follows:
| Parallel-flow heat exchanger | 100、200、300 | Straight line | B |
| Header | 10 | Flat tube | 20 |
| Tube chamber | 11 | Inserting end | 21 |
| First end face | 12 | First splice | 30 |
| Second end face | 13 | Second splice | 40 |
| First side | 14 | Groove | 45 |
| Second side | 15 | Refrigerant pipe | 50 |
| The axis of symmetry | C | Baffler | 60 |
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Refer to Fig. 1 and Fig. 2, the parallel-flow heat exchanger 100 that the utility model first embodiment provides, it comprises header 10, be plugged in the some flat tubes 20 in described header 10, the refrigerant pipe 50 being connected to the fin (not shown) between adjacent described flat tube 20 and being communicated on described header 10, described header 10 has the first end face 12 and second end face 13 relative with described first end face 12, described refrigerant pipe 50 is communicated in described header 10 by described first end face 12, multiple baffler 60 is provided with in described header 10, baffler 60 described in each is arranged on the length direction of described header 10, the height of baffler 60 described in each is reduced gradually by described first end face 12 to the direction of described second end face 13 of described header 10, the plate face bearing of trend of baffler 60 described in each passes through the axis of symmetry C of described header 10.
When refrigerant pipe 50 is accessed by an end face of header 10, refrigerant enters in it by one end of header 10, by multiple baffler 60 of arranging on the length direction of described header 10, the height of baffler 60 described in each is reduced gradually by described first end face 12 to the direction of described second end face 13 of described header 10, the refrigerant of near-end is made to be subject to larger disturbance, and refrigerant is distally ceaselessly supplied by near-end, place far away, the position of distance refrigerant pipe 50 installation is made to have enough coolant medias, thus, for in unstable state situation, in i.e. variable working condition situation, when as little in flow, rate-of flow in the flat tube 20 of far-end is roughly the same with the rate-of flow of near-end flat tube 20, make the Media Ratio of whole flat tube 20 more abundant, parallel-flow heat exchanger 100 is in the uniformity of temperature profile of diverse location, thus the heat exchange efficiency of parallel-flow heat exchanger 100 is improved greatly, header 10 processing technology of parallel-flow heat exchanger 100 of the present utility model and simple and reasonable, facilitate the installation of parallel-flow heat exchanger 100 in air-conditioning on the one hand, ensure that when different load, different gas-liquid rate-of flow on the other hand, the uniformity of distribution.
Baffler 60 described in each is evenly arranged on the length direction of described header 10.Multiple baffler 60 is evenly arranged in header 10, is evenly distributed by the refrigerant of the regional in header 10.
Particularly, described header 10 has the first side 14 and second side 15 relative with described first side 14, and flat tube 20 described in each is inserted by the first side 14 of described header 10, and described baffler 60 is erected on the inner surface of the second side 15 of described header 10.The tube chamber volume of described header 10 is increased gradually by the direction of described first end face 12 to described second end face 13.
Preferably, flat tube 20 described in each stretches in described header 10 by the first side 14 of described header 10, and the distance between the inserting end 21 of flat tube 20 described in each and the second side 15 of described header 10 is increased gradually by the direction of described first end face 12 to described second end face 13.
When refrigerant pipe 50 is accessed by an end face of header 10, by the distance of the bottom side (i.e. the second side 15) of the insertion end and header 10 that change each flat tube 20, the refrigerant of being discharged by the insertion end of flat tube 20 is made to have different volumes in the different piece of header 10, particularly, distance between the inserting end 21 of flat tube 20 described in each and the second side 15 of described header 10 is increased gradually by the direction of described first end face 12 to described second end face 13, in conjunction with the use of baffler 60, can ensure that there are enough coolant medias in the place far away apart from the position of refrigerant pipe 50 installation like this, thus, for in unstable state situation, in i.e. variable working condition situation, when as little in flow, rate-of flow in the flat tube 20 of far-end is roughly the same with the rate-of flow of near-end flat tube 20, make the Media Ratio of whole flat tube 20 more abundant, parallel-flow heat exchanger 100 device is in the uniformity of temperature profile of diverse location, thus the heat exchange efficiency of parallel-flow heat exchanger 100 device is improved greatly, header 10 processing technology of parallel-flow heat exchanger 100 of the present utility model and simple and reasonable, facilitate the installation of parallel-flow heat exchanger 100 in air-conditioning on the one hand, ensure that when different load, different gas-liquid rate-of flow on the other hand, the uniformity of distribution.
In order to ensure that the distance between the inserting end 21 of flat tube 20 described in each and the second side 15 of described header 10 is increased gradually by the direction of described first end face 12 to described second end face 13, in a first embodiment, the technical scheme of concrete employing is: the degree of depth that flat tube 20 described in each inserts in described header 10 is reduced gradually by the direction of described first end face 12 to described second end face 13, the cross-sectional area of described header 10 is increased gradually by the direction of described first end face 12 to described second end face 13, here it should be noted that, the insertion depth of flat tube 20 refers to the actual length entered in header 10 of flat tube 20.
In a first embodiment, reduced gradually to far-end by near-end by making the insertion depth of flat tube 20, simultaneously, the cross-sectional area of header 10 is increased to far-end gradually by near-end, the two insertion end of common guarantee flat tube 20 and the distance of header 10 bottom side are increased to far-end gradually by near-end, near-end mentioned here refers to the one end near refrigerant pipe 50, and on the contrary, far-end refers to the one end away from refrigerant pipe 50.
Further, distance between the inserting end 21 of flat tube 20 described in each and the second side 15 of described header 10 is linearly increased by the direction of described first end face 12 to described second end face 13, the inserting end 21 line shape B in line of flat tube 20 described in each, this straight line B and the direction shape α in an angle perpendicular to described flat tube 20 direction of insertion, the scope of this angle α is 5 degree to 40 degree.
Further, described header 10 is spliced by axially extended first splice 30 and the second splice 40, and described first splice 30 is axially spliced to form tube chamber 11 mutually with described second splice 40, and described flat tube 20 is inserted by described first splice 30.Baffler 60 is arranged in the middle part of the bottom side of the second splice 40.
Further, described second splice 40 by described first end face 12 of described header 10 to the direction of described second end face 13 and the range of tilt angles that axis becomes of described first splice 30 between 5 °-40 °, the cavity volume of described tube chamber 11 is increased gradually by the direction of described first end face 12 to described second end face 13." described second splice 40 by described first end face 12 of described header 10 to the direction of described second end face 13 " mentioned here refers to the symmetrical centre line of the cross section everywhere of the second splice 40 and the axis formed.
Described first splice 30 is aluminium part, and the surface of this aluminium part has solder layer, and the object arranging solder layer is in order to follow-up first splice 30 coordinates with welding between the second splice 40.
Described second splice 40 is aluminium part.First splice 30 and the second splice 40 are aluminium, not only it has the advantage of lightweight, aboundresources, easily processing, first splice 30 and the second splice 40 all can pass through extrusion forming, easily manufactured, the length according to the header 10 manufactured needed for parallel-flow heat exchanger 100 is cut.
Described second splice 40 offers two grooves 45 in its axial section, and the relative both sides correspondence of described first splice 30 is inserted in two described grooves 45, and described second splice 40 is interference fit with described first splice 30 and welds together.The existence of groove 45, facilitates the interference fit of the first splice 30 and the second splice 40.
Chamfered (shown in the A of Fig. 2) is carried out at the top of the side in the close described tube chamber 11 of groove 45 described in each, the grafting of the first conveniently groove 45 of the first splice 30 and the second splice 40, when the first splice 30 welds with the second splice 40, the object of chamfered is conducive to the infiltration of solder.
Please refer to Fig. 3, the parallel-flow heat exchanger 200 that the utility model second embodiment provides is roughly the same with the parallel-flow heat exchanger 100 that the first embodiment provides, its difference is: only " cross-sectional area of described header 10 is increased gradually by the direction of described first end face 12 to described second end face 13 " of the first embodiment changed into " cross-sectional area of described header 10 is all identical in the whole length of this header 10 ", can ensure that there are enough coolant medias in the place far away apart from the position of refrigerant pipe 50 installation equally, thus, for in unstable state situation, in i.e. variable working condition situation, when as little in flow, rate-of flow in the flat tube 20 of far-end is roughly the same with the rate-of flow of near-end flat tube 20, make the Media Ratio of whole flat tube 20 more abundant, parallel-flow heat exchanger 200 is in the uniformity of temperature profile of diverse location, thus the heat exchange efficiency of parallel-flow heat exchanger 200 is improved greatly.
Please refer to Fig. 4, the parallel-flow heat exchanger 300 that the utility model the 3rd embodiment provides is roughly the same with the parallel-flow heat exchanger 100 that the first embodiment provides, its difference is: only " degree of depth that flat tube 20 described in each inserts in described header 10 is reduced gradually by the direction of described first end face 12 to described second end face 13 " of the first embodiment changed into " degree of depth that flat tube 20 described in each inserts in described header 10 is identical ", and retain " cross-sectional area of described header 10 is increased gradually by the direction of described first end face 12 to described second end face 13 " of the first embodiment, can ensure that there are enough coolant medias in the place far away apart from the position of refrigerant pipe 50 installation equally, thus, for in unstable state situation, in i.e. variable working condition situation, when as little in flow, rate-of flow in the flat tube 20 of far-end is roughly the same with the rate-of flow of near-end flat tube 20, make the Media Ratio of whole flat tube 20 more abundant, parallel-flow heat exchanger 300 is in the uniformity of temperature profile of diverse location, thus the heat exchange efficiency of parallel-flow heat exchanger 300 is improved greatly.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. a parallel-flow heat exchanger, it comprises header, be plugged in the some flat tubes in described header, the refrigerant pipe being connected to the fin between adjacent described flat tube and being communicated on described header, described header has the first end face and second end face relative with described first end face, it is characterized in that: described refrigerant pipe is communicated in described header by described first end face, multiple baffler is provided with in described header, baffler described in each is arranged on the length direction of described header, the height of baffler described in each is reduced gradually by described first end face to the direction of described second end face of described header, the plate face bearing of trend of baffler described in each passes through the axis of symmetry of described header.
2. parallel-flow heat exchanger as claimed in claim 1, is characterized in that: baffler described in each is evenly arranged on the length direction of described header.
3. parallel-flow heat exchanger as claimed in claim 1, it is characterized in that: described header has the first side and second side relative with described first side, flat tube described in each is inserted by the first side of described header, and described baffler is erected on the inner surface of the second side of described header.
4. the parallel-flow heat exchanger as described in any one of claim 1-3, is characterized in that: the tube chamber volume of described header is increased gradually by the direction of described first end face to described second end face.
5. parallel-flow heat exchanger as claimed in claim 3, is characterized in that: the distance between the inserting end of flat tube described in each and the second side of described header is increased gradually by the direction of described first end face to described second end face.
6. parallel-flow heat exchanger as claimed in claim 5, is characterized in that: the degree of depth that flat tube described in each inserts in described header is identical, and the cross-sectional area of described header is increased gradually by the direction of described first end face to described second end face.
7. parallel-flow heat exchanger as claimed in claim 5, it is characterized in that: the degree of depth that flat tube described in each inserts in described header is reduced gradually by the direction of described first end face to described second end face, the cross-sectional area of described header is increased gradually by the direction of described first end face to described second end face.
8. parallel-flow heat exchanger as claimed in claim 5, it is characterized in that: the degree of depth that flat tube described in each inserts in described header is reduced gradually by the direction of described first end face to described second end face, and the cross-sectional area of described header is all identical in the whole length of this header.
9. parallel-flow heat exchanger as claimed in claim 7 or 8, is characterized in that: in line, in an angle, the scope of this angle is 5 degree to 40 degree to the inserting end line shape of flat tube described in each for this straight line and the direction shape perpendicular to described flat tube direction of insertion.
10. as claim 1-3, parallel-flow heat exchanger described in any one of 5-7, it is characterized in that: described header is spliced by axially extended first splice and the second splice, described first splice and described second splice are axially spliced to form tube chamber mutually, described flat tube is inserted by described first splice, described second splice by described first end face of described header to the range of tilt angles that axis becomes of the direction of described second end face and described first splice between 5 °-40 °, the cavity volume of described tube chamber is increased gradually by the direction of described first end face to described second end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520176954.8U CN204593963U (en) | 2015-03-26 | 2015-03-26 | Parallel-flow heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520176954.8U CN204593963U (en) | 2015-03-26 | 2015-03-26 | Parallel-flow heat exchanger |
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| Publication Number | Publication Date |
|---|---|
| CN204593963U true CN204593963U (en) | 2015-08-26 |
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|---|---|---|---|
| CN201520176954.8U Active CN204593963U (en) | 2015-03-26 | 2015-03-26 | Parallel-flow heat exchanger |
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|---|---|
| CN (1) | CN204593963U (en) |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |