CN113883752B - Heat exchanger connecting piece and heat exchanger - Google Patents
Heat exchanger connecting piece and heat exchanger Download PDFInfo
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- CN113883752B CN113883752B CN202010621415.6A CN202010621415A CN113883752B CN 113883752 B CN113883752 B CN 113883752B CN 202010621415 A CN202010621415 A CN 202010621415A CN 113883752 B CN113883752 B CN 113883752B
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- heat exchange
- heat exchanger
- hole
- board
- exchange tube
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
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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
- F28D7/16—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 being arranged in parallel spaced relation
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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
- F28F1/34—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 obliquely
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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
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
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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
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to the technical field of refrigeration, in particular to a heat exchanger connecting piece and a heat exchanger. The utility model provides a heat exchanger connecting piece installs on the heat exchanger, includes first board and second board, the multilayer through-hole has been seted up on the first board, the second board is close to the first recess of multilayer has been seted up to the side of first board, first board laminating in the notch of first recess so that first board with form the inner chamber between the second board, the intracavity has the transition district that supplies the medium to flow, first recess inboard is equipped with the arch, the arch is located at least partially in the transition district is with the reduction the flow area of transition district. The invention has the advantages that: the flow area of the transition zone can be reduced, and after one through hole of each layer of medium enters, the flow speed of the medium is increased due to the reduction of the flow area of the transition zone, so that the medium flows out of the other through hole of the same layer more uniformly.
Description
Technical Field
The invention relates to the technical field of refrigeration, in particular to a heat exchanger connecting piece and a heat exchanger.
Background
In the refrigerating system, the heat exchanger serves as an important part in four refrigerating parts and performs a function of exchanging heat with the outside. In a double row heat exchanger, it is often necessary for the heat exchanger connection to connect two rows of heat exchange tubes.
In the existing heat exchanger connecting piece, after a medium enters an inner cavity, the flow area is increased, the flow speed is reduced, then the medium can enter one side, close to an inlet through hole, of an outlet through hole preferentially, so that more medium sides and less medium sides in the heat exchange tube connected with the outlet through hole are caused, and the heat exchange area of the heat exchange tube cannot be fully utilized.
Disclosure of Invention
In order to solve the problems, the invention provides a heat exchanger connecting piece, which has the following technical scheme:
the utility model provides a heat exchanger connecting piece installs on the heat exchanger, includes first board and second board, the multilayer through-hole has been seted up on the first board, the second board is close to the first recess of multilayer has been seted up to the side of first board, first board laminating in the notch of first recess so that first board with form the inner chamber between the second board, the intracavity has the transition district that supplies the medium to flow, first recess inboard is equipped with the arch, the arch is located at least partially in the transition district is with the reduction the flow area of transition district.
By the arrangement, the flow area of the transition area can be reduced, after one through hole of each layer of medium enters, the flow area of the transition area is reduced, and the flow speed of the medium is increased, so that the medium flows out of the other through hole of the same layer more uniformly.
In one embodiment of the present invention, each layer of the through holes includes at least a first through hole and a second through hole, and a projection of the protrusion on the first plate is located between a central axis of the first through hole and a central axis of the second through hole.
The arrangement is such that the medium can smoothly flow from the through hole without being blocked by the protrusions, most of the medium is located near the first through hole after entering the inner cavity, the medium can flow towards the second through hole, the protrusions are arranged between the axis of the first through hole and the axis of the second through hole, the flow speed of the medium before entering the second through hole can be increased, and the medium can more uniformly enter the second through hole.
In one embodiment of the present invention, the first through hole, the second through hole and the first groove located at the same layer form channels, and the channels of each layer are not communicated.
In one embodiment of the invention, the projection of the projection onto the first plate is centered on the central axis between the first through hole and the second through hole.
In one embodiment of the invention, the side surfaces and the end surfaces of the protrusions are rounded.
This is arranged to reduce the pressure loss of the medium during said flow.
In one embodiment of the present invention, a side surface of the second plate away from the first plate is provided with a second groove corresponding to the protrusion, and the protrusion is formed by punching the first plate at the position of the first groove.
The arrangement is simple in process, no extra bulge is needed, and materials are saved.
In one embodiment of the present invention, a convex hull corresponding to the first groove is provided on a side surface of the second plate away from the first plate, the convex hull is provided in a protruding manner with respect to a surface of the second plate away from the first plate, and the second groove is provided on the convex hull.
So configured, the second bump can increase the depth of the first groove to enable the medium to have a well-mixed space within the first groove.
In one embodiment of the present invention, the side surface of the first board is provided with a plurality of layers of bumps, and the through holes are opened on the corresponding bumps.
The arrangement is used for increasing the thickness of the first through hole and the second through hole and enhancing the connection strength of the first through hole, the second through hole and the heat exchange tube.
The invention also provides the following technical scheme:
a heat exchanger comprises a first collecting pipe, a second collecting pipe, a heat exchange pipe and the heat exchanger connecting piece, wherein one end of the heat exchange pipe is connected with the first collecting pipe and the second collecting pipe respectively, and the other end of the heat exchange pipe is connected with the heat exchanger connecting piece.
The heat exchanger is arranged in such a way, the wing-free area of the heat exchanger can be reduced, the heat exchange performance is improved, the heat exchanger connecting piece can realize medium turning back, and the uniformity of the air outlet temperature of the air exchanging heat with the heat exchange pipe is enhanced.
In one embodiment of the present invention, the heat exchange tube includes at least a first heat exchange tube group and a second heat exchange tube group, one end of the first heat exchange tube group is connected to the first header pipe, the other end is connected to the heat exchanger connecting member, one end of the second heat exchange tube group is connected to the second header pipe, the other end is connected to the heat exchanger connecting member, and a flow area of the heat exchange tube in the first heat exchange tube group is different from a flow area of the heat exchange tube in the second heat exchange tube group.
The arrangement is used for increasing the flow area of the medium and reducing the pressure loss of the medium in the flowing process.
Compared with the prior art, the heat exchanger connecting piece provided by the invention has the advantages that the bulges are arranged in the inner cavity and at least partially positioned in the transition area, so that the flow area of the transition area is reduced, the flow velocity of a medium is increased, and the medium flows out more uniformly.
Drawings
FIG. 1 is a schematic view of a heat exchanger according to the present invention;
FIG. 2 is a top view of a heat exchanger provided by the present invention;
FIG. 3 is a partial cross-sectional view of a heat exchanger provided by the present invention;
FIG. 4 is a partial cross-sectional view of a heat exchanger connection and heat exchange tube provided by the present invention;
FIG. 5 is a front view of a heat exchanger connection provided by the present invention;
FIG. 6 is a side view of a heat exchanger connection provided by the present invention;
FIG. 7 is a schematic view of a portion of a first plate of a heat exchanger connection provided by the present invention;
FIG. 8 is a schematic illustration of a process of fluid flow in a prior art heat exchanger connection;
fig. 9 is a schematic illustration of the flow of fluid through a heat exchanger connection provided by the present invention.
The symbols in the drawings are as follows:
100. a heat exchanger; 10. a heat exchange tube; 11. a first heat exchange tube group; 12. a second heat exchange tube group; 13. a first heat exchange zone; 14. a second heat exchange zone; 20. a first header; 21. a first opening; 30. a second header; 31. a second opening; 40. a heat exchanger connection; 41. a first plate; 411. a through hole; 4111. a first through hole; 4112. a second through hole; 412. a bump; 42. a second plate; 421. a first groove; 422. a protrusion; 423. convex hulls; 424. a second groove; 43. an inner cavity; 44. a transition zone; 50. a fin; 60. and a side plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It will be understood that when an element is referred to as being "mounted" to another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "or/and" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 7, the present invention provides a heat exchanger 100, and the heat exchanger 100 is applied to an air conditioning system for exchanging heat with the outside. In this embodiment, the heat exchanger 100 is a double-row microchannel heat exchanger 100, and is used as an evaporator, so that interference design of partial materials caused by superheating sections and liquid separation is not required, and the heat exchange efficiency is high. Of course, in other embodiments, the heat exchanger 100 may also be a single row microchannel heat exchanger, or may also be a fin or other type of heat exchanger, depending on the needs, and the heat exchanger 100 may also be used as a condenser.
Referring to fig. 1 to 3, the heat exchanger 100 includes a first collecting pipe 20, a second collecting pipe 30, a heat exchanger connecting piece 40 and a plurality of heat exchange pipes 10, wherein one ends of the heat exchange pipes 10 are respectively connected with the first collecting pipe 20 and the second collecting pipe 30, and the other ends are connected with the heat exchanger connecting piece 40, and the first collecting pipe 20 and the second collecting pipe 30 are positioned at the same side.
Specifically, the plurality of heat exchange tubes 10 includes at least a first heat exchange tube group 11 and a second heat exchange tube group 12, one end of the heat exchange tube 10 in the first heat exchange tube group 11 is connected to the first header 20, the other end is connected to the heat exchanger connecting member 40, one end of the heat exchange tube 10 in the second heat exchange tube group 12 is connected to the second header 30, and the other end is connected to the heat exchanger connecting member 40. The heat exchanger connection member 40 is for connecting the first heat exchange tube group 11 and the second heat exchange tube group 12, and for turning back the medium.
The heat exchanger 100 further comprises a first heat exchange zone 13 and a second heat exchange zone 14, the first heat exchange tube group 11 being located in the first heat exchange zone 13, and the second heat exchange tube group 12 being located in the second heat exchange zone 14.
Further, a first opening 21 is provided at one end of the first header 20, and a second opening 31 is provided at one end of the second header 30. In the present embodiment, the heat exchanger 100 is used as an evaporator, and the medium flows into the first header 20 from the first opening 21, flows through the heat exchange tubes 10 in the first heat exchange tube group 11 and the second heat exchange tube group 12 in this order, then enters the second header 30, and flows out from the second opening 31. The first collecting pipe 20 and the second collecting pipe 30 are respectively provided with a plurality of layers of flat pipe grooves (not shown), the flat pipe grooves are arranged along the length direction of the first collecting pipe 20 and/or the second collecting pipe 30, and one ends of the heat exchange pipes 10 in the first heat exchange pipe group 11 and the second heat exchange pipe group 12 are inserted into the flat pipe grooves and fixed by welding. It should be noted that the medium of the present invention refers to the refrigerants such as R134a, R404A, R744, and R717. In other embodiments, the heat exchanger 100 may be used as a condenser, with the first opening 21 being the outlet and the second opening 31 being the inlet.
The connection of the first heat exchange tube group 11 and the second heat exchange tube group 12 through the heat exchange connector 40 can reduce the finless area between the first heat exchange tube group 11 and the second heat exchange tube group 12. It can be understood that in the existing microchannel heat exchanger, when the first collecting pipe and the second collecting pipe are required to be arranged on the same side, the heat exchange is realized by bending the heat exchange pipe, the bending radius is larger, the heat exchange pipe of the bending part cannot be provided with fins for heat exchange, and the heat exchange performance of the heat exchanger is reduced; the heat exchanger connecting piece 40 can realize the turning back of the medium, and the outside air exchanges heat in the first heat exchange area 13 and then exchanges heat in the second heat exchange area 14 so as to make the air outlet temperature of the lee side uniform. It should be noted that, the wingless region of the present invention is a region where the fins 50 described below cannot be installed, and the leeward side is the air outlet side after the air and the medium in the heat exchanger 100 exchange heat.
Preferably, the heat exchange tubes 10 in the first heat exchange tube group 11 are different from the heat exchange tubes 10 in the second heat exchange tube group 12 in flow area, and in this embodiment, the flow direction of the medium is from the first heat exchange tube group 11 to the second heat exchange tube group 12, and the flow area of the heat exchange tubes 10 in the first heat exchange tube group 11 is smaller than the flow area of the heat exchange tubes 10 in the second heat exchange tube group 12, so that the flow area of the medium is increased during the flow, the pressure loss during the flow is reduced, and the heat exchange performance of the heat exchanger 100 is enhanced.
Referring to fig. 4 to 7, the heat exchanger connecting member 40 includes a first plate 41 and a second plate 42, wherein a plurality of layers of through holes 411 are formed in the first plate 41, the plurality of layers of through holes 411 are arranged along the length direction of the first plate 41, a plurality of layers of first grooves 421 are formed in the second plate 42 near the side surface of the first plate 41, and the side surface of the first plate 41 is attached to the notch of the first groove 421 so that an inner cavity 43 is formed between the first plate 41 and the second plate 42. The first plate 41 and the second plate 42 are fixed by welding. The medium flows within the interior cavity 43 to form a transition zone 44. The transition area 44 is a distribution area of the medium in the process of entering from the first through hole 4111 to the second through hole 4112 and flowing out after the medium enters the inner cavity.
Specifically, each of the through holes 411 includes at least a first through hole 4111 and a second through hole 4112, the first through hole 4111 being connected to the heat exchange tubes 10 of the first heat exchange tube group 11, and the second through hole 4112 being connected to the heat exchange tubes 10 of the second heat exchange tube group 12.
The first through hole 4111, the second through hole 4112 and the first groove 421 of each layer form a runner, and each layer of the runner is connected in parallel and is not communicated with each other. It will be appreciated that the medium has been evenly distributed before entering the first heat exchange tube group 11, and that the flow of each layer is not communicated, so that secondary liquid separation of the medium in the heat exchanger connection member 40, which is caused by partial vaporization of the medium, can be avoided, and the medium can flow to the upper flow passage, which results in uneven medium.
In the present embodiment, the flow area of the first through hole 4111 is smaller than the flow area of the second through hole 4112 to match the heat exchange tubes 10 of the first heat exchange tube group 11 and the heat exchange tubes 10 of the second heat exchange tube group 12. In other embodiments, the flow area of the first through hole 4111 and the flow area of the second through hole 4112 may be the same according to different designs.
Referring to fig. 8, in the conventional heat exchanger connecting piece, medium enters the inner cavity from the inside of the first through hole, the flow area of the transition region 44 'is larger, the flow velocity of the medium after entering the transition region 44' is reduced, so that the medium preferentially enters one side of the second through hole close to the first through hole, the medium is unevenly distributed, and the heat exchange area of the heat exchange tube is wasted. The transition region 44 'is shown on the left side of the dotted line in fig. 8, and the transition region 44' is the distribution region of the medium in the process of entering from the first through hole to the second through hole and flowing out after the medium enters the inner cavity.
Referring to fig. 5, 6 and 9, a protrusion 422 is disposed inside the first groove 421, and the protrusion 422 is at least partially located in the transition region 44 to reduce the flow area of the transition region 44. It can be appreciated that after the medium enters the first through hole 4111, the medium flows into the transition region 44, the protrusions 422 provided in the inner cavity 43 can reduce the flow area of the transition region 44, so as to increase the flow velocity of the medium, that is, the flow velocity of the medium before entering the second through hole 4112, so that the medium uniformly flows into the second through hole 4112, and the medium can be uniformly distributed in the heat exchange tubes 10 in the second heat exchange tube group 12, thereby fully utilizing the heat exchange area of the heat exchange tubes 10 and enhancing the heat exchange performance; if the flow rate of the medium before entering the second through hole 4112 is low, the medium will preferentially enter the second through hole 4112 at the side close to the first through hole 4111, and the medium at the side close to the first through hole 4111 in the second through hole 4112 is more, and the medium at the side far from the first through hole 4111 is less, so that the heat exchange area of the heat exchange tube 10 cannot be fully utilized. The transition region 44 is shown below the dashed line in fig. 9.
Preferably, the projection of the projection 422 onto the first plate 41 is located between the central axis of the first through hole 4111 and the central axis of the second through hole 4112. This arrangement allows the medium to smoothly enter the inner chamber 43 from the first through hole 4111 without being blocked by the projection 422, and increases the flow rate before entering the second through hole 4112.
In the present embodiment, the center of projection of the projection 422 onto the first plate 41 is located on the central axis between the first through hole 4111 and the second through hole 4112. In other embodiments, depending on the design of the different widths of the heat exchanger connection 40, and the different widths of the protrusions 422, the protrusions 422 may be disposed proximate to the second through holes 4112, or at other locations.
Preferably, rounded corners are provided between the sides and end faces of the protrusions 422 to reduce pressure loss of the medium during flow.
The side of keeping away from first board 41 on the second board 42 is equipped with the convex closure 423 that corresponds with first recess 421, and the convex closure 423 is kept away from the surface protrusion setting of first board 41 relative second board 42, and the inboard of convex closure 423 is located to first recess 421, so sets up, can make the medium flow out in second through-hole 4112 again after first recess 421 can intensive mixing, and the space that the setting of convex closure 423 provided for the mixture of medium.
The side of the convex hull 423 away from the first plate 41 is provided with the second groove 424, the second groove 424 corresponds to the convex hull 422, the convex hull 423 is formed by stamping the convex hull 423 at the position of the second groove 424, the process is simple, the convex hull 422 does not need to be additionally arranged in the first groove 421, the complexity of the process is reduced, and the material is saved.
Referring to fig. 7, a bump 412 is disposed on a side surface of the first plate 41, and a first through hole 4111 and a second through hole 4112 are formed on the bump 412. It will be appreciated that the bump 412 can increase the thickness of the first through hole 4111 and the second through hole 4112, and increase the connection strength of the first through hole 4111 and the second through hole 4112 with the first heat exchange tube group 11 and the second heat exchange tube group 12.
With continued reference to fig. 1, the heat exchanger 100 further includes fins 50, the heat exchange tubes 10 and the fins 50 in the first heat exchange tube group 11 are arranged in a stacked manner along the length direction of the first header 20, and the heat exchange tubes 10 and the fins 50 in the second heat exchange tube group 12 are arranged in a stacked manner along the length direction of the second header 30. One end of the heat exchange tube 10 in the first heat exchange tube group 11 is arranged in the flat tube groove of the first collecting tube 20 in a penetrating manner, one end of the heat exchange tube 10 in the second heat exchange tube group 12 is arranged in the flat tube groove of the second collecting tube 30 in a penetrating manner, the fins 50 in the first heat exchange region 13 are arranged among the heat exchange tubes 10 in the first heat exchange tube group 11, and the fins 50 in the second heat exchange region 14 are arranged among the heat exchange tubes 10 in the second heat exchange tube group 12.
Further, the heat exchanger 100 further includes a side plate 60, and the side plate 60 is disposed on the side surface of the uppermost and lowermost fins 50 for protecting the fins 50.
In operation, the medium is uniformly distributed from the first header 20 to the heat exchange tubes 10 of the first heat exchange tube group 11, exchanges heat with the outside in the first heat exchange zone 13, enters the inner cavity 43 from the first through hole 4111, flows in the inner cavity 43 towards the second through hole 4112, and increases the flow velocity under the action of the protrusions 422 in the flowing process, so that the medium uniformly flows into the second through hole 4112. The medium enters the heat exchange tubes 10 in the second heat exchange tube group 12 from the second through holes 4112, exchanges heat in the second heat exchange zone 14, and flows out from the second header 30.
The heat exchanger connecting piece 40 can enable the medium to flow out uniformly, fully utilizes the heat exchange area of the heat exchange tube 10, and enhances the heat exchange performance.
The heat exchanger 100 of the invention is connected with the first heat exchange tube group 11 and the second heat exchange tube group 12 by arranging the heat exchanger connecting piece 40, thereby reducing the wingless area, increasing the effective heat exchange area, ensuring uniform air outlet temperature and enhancing the comfort level of users.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (9)
1. The utility model provides a heat exchanger connecting piece, installs on the heat exchanger, includes first board (41) and second board (42), multilayer through-hole (411) have been seted up on first board (41), second board (42) are close to multilayer first recess (421) have been seted up to the side of first board (41), first board (41) laminate in notch in first recess (421) so that first board (41) with form inner chamber (43) between second board (42), have in inner chamber (43) and supply transition district (44) that the medium flows, its characterized in that:
a protrusion (422) is arranged on the inner side of the first groove (421), and the protrusion (422) is at least partially positioned in the transition zone (44) to reduce the flow area of the transition zone (44);
each layer of through holes (411) at least comprises a first through hole (4111) and a second through hole (4112), the medium flows in from the first through hole (4111), flows through the transition area (44) and flows out from the second through hole (4112), and the projection of the projection (422) on the first plate (41) is positioned between the central axis of the first through hole (4111) and the central axis of the second through hole (4112) so as to increase the flow rate of the medium entering the second through hole (4112).
2. The heat exchanger connection of claim 1, wherein: the first through holes (4111) and the second through holes (4112) which are positioned on the same layer and the first grooves (421) form channels, and the channels of each layer are not communicated.
3. The heat exchanger connection of claim 2, wherein: the projection of the projection (422) onto the first plate (41) is centered on the central axis between the first through hole (4111) and the second through hole (4112).
4. The heat exchanger connection of claim 1, wherein: rounded corners are arranged between the side surfaces and the end surfaces of the protrusions (422).
5. The heat exchanger connection of claim 1, wherein: the side surface of the second plate (42) far away from the first plate (41) is provided with a second groove (424) corresponding to the bulge (422), and the bulge (422) is formed by punching the first plate (41) at the position of the first groove (421).
6. The heat exchanger connection according to claim 5, wherein: the side of keeping away from on second board (42) first board (41) be equipped with convex closure (423) that first recess (421) correspond, convex closure (423) are relative second board (42) are kept away from the surface protrusion setting of first board (41), second recess (424) are seted up on convex closure (423).
7. The heat exchanger connection of claim 1, wherein: the side of the first plate (41) is provided with a plurality of layers of protruding blocks (412), and the through holes (411) are formed on the corresponding protruding blocks (412).
8. A heat exchanger, characterized in that: the heat exchanger comprises a first collecting pipe (20), a second collecting pipe (30), a heat exchange pipe (10) and a heat exchanger connecting piece according to any one of claims 1-7, wherein one end of the heat exchange pipe (10) is respectively connected with the first collecting pipe (20) and the second collecting pipe (30), and the other end of the heat exchange pipe is connected with the heat exchanger connecting piece.
9. The heat exchanger of claim 8, wherein: the heat exchange tube (10) at least comprises a first heat exchange tube group (11) and a second heat exchange tube group (12), one end of the first heat exchange tube group (11) is connected to the first collecting pipe (20), the other end of the first heat exchange tube group is connected to the heat exchanger connecting piece, one end of the second heat exchange tube group (12) is connected to the second collecting pipe (30), the other end of the second heat exchange tube group is connected to the heat exchanger connecting piece, and the flow area of the heat exchange tube (10) in the first heat exchange tube group (11) is different from the flow area of the heat exchange tube (10) in the second heat exchange tube group (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010621415.6A CN113883752B (en) | 2020-07-01 | 2020-07-01 | Heat exchanger connecting piece and heat exchanger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010621415.6A CN113883752B (en) | 2020-07-01 | 2020-07-01 | Heat exchanger connecting piece and heat exchanger |
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| Publication Number | Publication Date |
|---|---|
| CN113883752A CN113883752A (en) | 2022-01-04 |
| CN113883752B true CN113883752B (en) | 2023-06-06 |
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| CN202010621415.6A Active CN113883752B (en) | 2020-07-01 | 2020-07-01 | Heat exchanger connecting piece and heat exchanger |
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| CN201575746U (en) * | 2009-12-29 | 2010-09-08 | 中国神华能源股份有限公司 | Connecting device between heat exchange tubes of multi-effect evaporator |
| CN102230692A (en) * | 2010-06-29 | 2011-11-02 | 三花丹佛斯（杭州）微通道换热器有限公司 | Heat exchanger with improved heat exchange performance |
| EP2840342A1 (en) * | 2012-03-07 | 2015-02-25 | Mitsubishi Electric Corporation | Heat exchanger and refrigeration cycle device |
| KR101824356B1 (en) * | 2017-03-20 | 2018-02-01 | 오재윤 | Fluid distributor |
| CN210463667U (en) * | 2019-09-23 | 2020-05-05 | 常州常发制冷科技有限公司 | Parallel flow type automobile air conditioner evaporator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH10111044A (en) * | 1996-10-03 | 1998-04-28 | Zexel Corp | Lamination type heat exchanger |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1798507A2 (en) * | 2005-12-13 | 2007-06-20 | Behr GmbH & Co. KG | Heat exchanger, more particularly evaporator |
| CN201575746U (en) * | 2009-12-29 | 2010-09-08 | 中国神华能源股份有限公司 | Connecting device between heat exchange tubes of multi-effect evaporator |
| CN102230692A (en) * | 2010-06-29 | 2011-11-02 | 三花丹佛斯（杭州）微通道换热器有限公司 | Heat exchanger with improved heat exchange performance |
| EP2840342A1 (en) * | 2012-03-07 | 2015-02-25 | Mitsubishi Electric Corporation | Heat exchanger and refrigeration cycle device |
| KR101824356B1 (en) * | 2017-03-20 | 2018-02-01 | 오재윤 | Fluid distributor |
| CN210463667U (en) * | 2019-09-23 | 2020-05-05 | 常州常发制冷科技有限公司 | Parallel flow type automobile air conditioner evaporator |
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| CN113883752A (en) | 2022-01-04 |
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