CN218002296U - Adapter tube and micro-channel heat exchanger thereof - Google Patents
Adapter tube and micro-channel heat exchanger thereof Download PDFInfo
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- CN218002296U CN218002296U CN202221483863.5U CN202221483863U CN218002296U CN 218002296 U CN218002296 U CN 218002296U CN 202221483863 U CN202221483863 U CN 202221483863U CN 218002296 U CN218002296 U CN 218002296U
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Abstract
The utility model relates to a refrigeration technology field especially relates to a switching pipe and microchannel heat exchanger thereof. The adapter tube is arranged in the micro-channel heat exchanger and is used for connecting the flat tube; the adapter tube is provided with a first tube opening matched with the flat tube, the flat tube is inserted into the first tube opening, the inner wall of the adapter tube is provided with a limiting part, and the limiting part is abutted to one end of the flat tube and/or abutted to the side wall of the flat tube and used for limiting the flat tube. The application also provides a microchannel heat exchanger, and the microchannel heat exchanger comprises the adapter tube. Compared with the prior art, the utility model has the advantages of: the limiting part is abutted to one end of the flat pipe and/or abutted to the side wall of the flat pipe, so that the flat pipe is limited, the connection fixity between the flat pipe and the adapter pipe is guaranteed, the flat pipe and the adapter pipe cannot be displaced in the welding process, and the welding performance of the flat pipe and the adapter pipe is enhanced.
Description
Technical Field
The utility model relates to a refrigeration technology field especially relates to a switching pipe and microchannel heat exchanger thereof.
Background
The micro-channel heat exchanger is designed to meet the needs of industrial development, and is compact, light and efficient.
Among the current microchannel heat exchanger, flat pipe does not set up limit structure with being connected of adapter tube usually, so not only make between flat pipe and the adapter tube not convenient for weld, also make flat pipe and adapter tube produce the phenomenon of shifting in welding process moreover to influence welding quality.
SUMMERY OF THE UTILITY MODEL
In view of the above, there is a need for an adapter tube and a microchannel heat exchanger thereof that can enhance the welding performance.
A transfer pipe is arranged in a micro-channel heat exchanger and used for connecting a flat pipe; the adapter tube is provided with a first tube opening matched with the flat tube, the flat tube is inserted into the first tube opening, the inner wall of the adapter tube is provided with a limiting part, and the limiting part is abutted against one end of the flat tube and/or against the side wall of the flat tube and used for limiting the flat tube.
It can be understood that, this application is through making spacing portion butt in the one end of flat pipe and/or butt in the lateral wall of flat pipe for carry out the spacing and/or radial spacing of axial to flat pipe, thereby make flat pipe and adapter tube can not produce the phenomenon of aversion, convenient welding in welding process.
In one embodiment, the limiting portion includes a first protrusion and a second protrusion, the first protrusion and the second protrusion are arranged at intervals along the length direction of the adapter tube, the first protrusion is far away from the first tube opening relative to the second protrusion, the height of the first protrusion protruding from the inner wall of the adapter tube is larger than the height of the second protrusion protruding from the inner wall of the adapter tube, the first protrusion is used for abutting against one end of the flat tube, and the second protrusion is used for abutting against the outer side wall of the flat tube.
It can be understood that, this application is through making spacing portion include first arch and second arch, and first arch is used for the one end of the flat pipe of butt, and the second arch is used for the butt in the lateral wall of flat pipe to flat pipe inserts the degree of depth of switching pipe, and flat pipe produces in the switching pipe and rocks and all carry on spacingly, has further guaranteed the connection fixity between flat pipe and the switching pipe, convenient welding.
In one embodiment, the second protrusion protrudes from the inner wall of the adapter tube by a height H 4 The height of the flat tube is H 1 The adapter tube is internally provided with a first inner wall and a second inner wall which are oppositely arranged, the second bulge is arranged on the first inner wall and/or the second inner wall, and the distance between the first inner wall and the second inner wall is H 2 ，0mm≤[H 4 -(H 2 -H 1 )]≤0.2mm。
It will be understood that by making the height H of the flat tubes 1 The height H of the second bulge protruding relative to the inner wall of the adapter tube 4 Distance H between first inner wall and second inner wall 2 Satisfy the relation of 0mm ≤ H 4 -(H 2 -H 1 )]Be less than or equal to 0.2mm to guarantee interference fit between second arch and the flat pipe, further strengthen the second arch is right flat pipe is ascending spacing radially.
In one embodiment, the first protrusion is semi-circular, square or trapezoidal and/or the second protrusion is semi-circular, square or trapezoidal.
In one embodiment, the first protrusion protrudes from the inner wall of the adapter tube by a height H 3 The height of the flat pipe is H 1 The adapter tube is internally provided with a first inner wall and a second inner wall which are oppositely arranged, the first bulge is arranged on the first inner wall and/or the second inner wall, and the distance between the first inner wall and the second inner wall is H 2 The height of the flat tube is H 1 ，0.2mm≤[H 3 -(H 2 -H 1 )]≤3mm。
It will be appreciated that the first projection projects by a height H relative to the inner wall of the adapter tube 3 Height H of flat tube 1 A distance H between the first inner wall and the second inner wall 2 Satisfy the relation of 0.2mm ≦ H 3 -(H 2 -H 1 )]Less than or equal to 3mm, so that the first projectionHeight H protruding from the inner wall of the adapter tube 3 In a proper range, the limit of the end face of the flat tube can be ensured, and H can be avoided 3 Too high results in too great a resistance to the flow of the medium.
In one embodiment, the distance between the first protrusion and the end surface of the first nozzle is L 1 ，2mm≤L 1 ≤10mm。
It will be appreciated that by making the spacing between the first projection and the end face of the first nozzle L 1 Satisfy the relation of 2mm < L 1 Less than or equal to 10mm to make the degree of depth that flat pipe inserted in the adapter tube be in an appropriate range value, can enough avoid flat pipe to insert too deeply and cause the choked flow, can avoid flat pipe to insert too shallowly again and reduce welding strength.
In one embodiment, the height of the flat tubes is H 1 The adapter tube is internally provided with a first inner wall and a second inner wall which are oppositely arranged, and the distance between the first inner wall and the second inner wall is H 2 ，0.02mm≤(H 2 -H 1 )≤0.4mm。
It will be understood that by making the height H of the flat tubes 1 And a distance H between the first inner wall and the second inner wall 2 Satisfies the relation of 0.02mm ≦ (H) 2 -H 1 ) Less than or equal to 0.4mm, so that the outer wall of the flat pipe is in clearance fit with the inner wall of the adapter pipe, thereby being beneficial to the flow of the solder.
In one embodiment, the adapter tube has a second tube orifice, the second tube orifice is located at one end of the adapter tube far away from the first tube orifice, and the second tube orifice is circular; or, the switching pipe is the return bend, the both ends of switching pipe all have first mouth of pipe.
The utility model discloses still provide following technical scheme:
the utility model provides a microchannel heat exchanger, includes flat pipe, distributor and switching pipe, the switching pipe is a plurality of, be equipped with many capillaries on the distributor, part the one end of switching pipe connect in the capillary, the other end connect in flat pipe, part the both ends of switching pipe all connect in flat pipe.
In one embodiment, the microchannel heat exchanger further comprises a plurality of fins, the plurality of fins are arranged in parallel, inserting grooves are formed in the fins, a plurality of flat tubes are arranged in parallel to form a plurality of layers, and the flat tubes are arranged in the inserting grooves in a penetrating manner; the fins are in multiple rows, each row of fins comprises multiple rows of inserting grooves which are arranged at intervals, and the inserting grooves in the same row of fins are arranged in a staggered mode along the height direction of the micro-channel heat exchanger.
Compared with the prior art, this application is used for spacing flat pipe through making spacing portion butt in the one end of flat pipe and/or butt in the lateral wall of flat pipe to guarantee the connection fixity between flat pipe and the adapter tube, and then make flat pipe and adapter tube can not produce the phenomenon of aversion in welding process, convenient welding.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention or the conventional technologies, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of an adapter tube provided by the present invention;
fig. 2 is a schematic structural view of an embodiment of the connection between the adapter tube and the flat tube provided by the present invention;
FIG. 3 is an enlarged view of a portion A of FIG. 2;
fig. 4 is a schematic structural view of another embodiment of the connection between the adapter tube and the flat tube provided by the present invention;
FIG. 5 is a partial enlarged view of the portion B in FIG. 4;
fig. 6 is a schematic structural view of the microchannel heat exchanger provided by the present invention.
The symbols in the drawings represent the following meanings:
100. a microchannel heat exchanger; 10. a transfer tube; 11. a first orifice; 12. a limiting part; 121. a first protrusion; 122. a second protrusion; 13. a first inner wall; 14. a second inner wall; 15. a second orifice; 20. flat tubes; 30. a dispenser; 31. a capillary tube; 40. a fin; 41. connecting a slot; 50. a header.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.
It will be understood that when an element is referred to as being "secured to" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. The use of the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions in the description of the invention is for illustrative purposes only and does not represent a unique embodiment.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may mean that the first feature is directly in contact with the second feature or that the first feature and the second feature are indirectly in contact with each other through an intermediate medium. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or may simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
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 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. As used in the specification of the present invention, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 6, the adapter tube 10 provided by the present invention is installed in a microchannel heat exchanger 100, and the adapter tube 10 is used for connecting adjacent flat tubes 20, or the adapter tube 10 is used for connecting the flat tubes 20 and the capillary tube 31; the microchannel heat exchanger 100 is installed in a refrigeration system, a medium flows in the microchannel heat exchanger 100, and the microchannel heat exchanger 100 assists the medium to exchange heat with the outside.
Among the current microchannel heat exchanger, flat pipe does not set up limit structure with being connected of switching pipe usually, so not only make between flat pipe and the switching pipe not convenient for weld, also make flat pipe and switching produce the phenomenon of aversion in welding process moreover, cause inconvenience for the welding.
In order to solve the problems existing in the prior micro-channel heat exchanger, the utility model provides an adapter tube 10 installed in a micro-channel heat exchanger 100, wherein the adapter tube 10 is used for connecting a flat tube 20; adapter tube 10 has the first mouth of pipe 11 with flat tub of 20 looks adaptation, and first mouth of pipe 11 supplies flat tub of 20 to insert, and the inner wall of adapter tube 10 is equipped with spacing portion 12, and spacing portion 12 butt in the one end of flat tub of 20 and/or butt in the lateral wall of flat tub of 20 is used for spacing flat tub of 20.
It should be noted that, when needs connect adjacent flat pipe 20, perhaps, when needs connect flat pipe 20 and capillary 31, need earlier every adapter tube 10 of inserting of every flat pipe 20 one-to-one, then an organic whole welds, consequently, in order to avoid taking place to shift between flat pipe 20 and the adapter tube 10 in welding process, the utility model discloses set up on adapter tube 10 inner wall and be used for right flat pipe 20 carries out spacing portion 12.
In order to ensure the connection fixity between the flat tube 20 and the adapter tube 10 before welding, the limiting part 12 is required to limit the depth of the flat tube 20 inserted into the adapter tube 10 along the axial direction of the flat tube 20; along the flat pipe 20 axis direction of perpendicular to, spacing portion 12 still need rock flat pipe 20 in adapter tube 10 and carry on spacingly.
As shown in fig. 1 and fig. 2, in an embodiment of the present invention, the limiting portion 12 includes a first protrusion 121, the first protrusion 121 is disposed on the inner wall of the adapter tube 10, and extends toward the direction away from the inner wall of the adapter tube 10, the first protrusion 121 is used for abutting against one end of the flat tube 20, so that the end surface of the flat tube 20 extending into the adapter tube 10 can abut against the first protrusion 121, thereby limiting the insertion depth of the flat tube 20 in the adapter tube 10.
Specifically, referring to fig. 2 and 3, the protrusion height of the first protrusion 121 relative to the inner wall of the adapter tube 10 cannot be too large or too small, and needs to be set within a suitable range. The height of the first protrusion 121 protruding from the inner wall of the adapter tube 10 is defined as H 3 Flat tubes 20 of height H 1 The adapter tube 10 has a first inner wall 13 and a second inner wall 14 disposed opposite to each other, the first protrusion 121 is disposed on the first inner wall 13 and/or the second inner wall 14, and a distance between the first inner wall 13 and the second inner wall 14 is H 2 Flat tubes 20 of height H 1 (ii) a Wherein, the height H of the first protrusion 121 protruding relative to the inner wall of the adapter tube 10 3 Flat tube 20 height H 1 A distance H between the first inner wall 13 and the second inner wall 14 2 Satisfy the relation of 0.2mm ≦ H 3 -(H 2 -H 1 )]Less than or equal to 3mm. Namely, [ H ] 3 -(H 2 -H 1 )]The value of (c) may be 0.2mm, 1mm, 2mm, 3mm or any value falling within the range of values. Height H of flat tubes 20 1 Is the exterior of flat tube 20The height is not the height of the inner channels of flat tubes 20.
It should be noted that, for example, if the first protrusion 121 protrudes by a height H relative to the inner wall of the adapter tube 10 3 Too large, which may cause the first protrusion 121 to obstruct the flow of the medium to some extent in the adapter tube 10, even causing throttling; such as the height H of the first protrusion 121 protruding with respect to the inner wall of the adapter tube 10 3 If the size is too small, the limiting function may not be realized; thus, the first protrusion 121 is made to protrude by a height H relative to the inner wall of the adapter tube 10 3 In a proper range, the limit of the end face of the flat tube 20 can be ensured, and H can be avoided 3 Too high results in too great a resistance to the flow of the medium.
The number of the first protrusions 121 may be one, two, three, or more in the circumferential direction of the inner wall of the adapter tube 10, and the number of the first protrusions 121 is not limited herein.
Alternatively, in the present embodiment, the shape of the first protrusion 121 may be a semicircle, a square, or a trapezoid, which is not limited herein.
In addition, in this embodiment, the position of the first protrusion 121 on the inner wall of the adapter tube 10 is substantially equivalent to the maximum position of the flat tube 20 inserted into the adapter tube 10, and it is necessary that there is a suitable range for the depth of the flat tube 20 inserted into the adapter tube 10. The distance between the first protrusion 121 and the end surface of the first pipe orifice 11, that is, the depth of the flat pipe 20 inserted into the adapter tube 10, is defined as L 1 ，L 1 Satisfy the relation 2mm ≤ L 1 Less than or equal to 10mm. I.e. the distance L between the first protrusion 121 and the end face of the first nozzle 11 1 And may be 2mm, 4mm, 6mm, 8mm, 10mm or any value falling within the range of values, without limitation.
It should be noted that if flat tube 20 is inserted to a depth L into adapter tube 10 1 If the size is too large, the flow of the internal medium is hindered to a certain extent; for example, if flat tube 20 is inserted to a depth L into adapter tube 10 1 If it is too small, the contact area between the flat tube 20 and the adapter tube 10 is reduced, thereby reducing the welding strength therebetween. Therefore, by making the distance L between the first projection 121 and the end face of the first nozzle 11 1 Satisfy the relation of 2mm < L 1 Less than or equal to 10mm to make flat pipe 20 insert the degree of depth in adapter tube 10 and be in an appropriate scope value, so can enough avoid flat pipe 20 to insert too deeply and cause the choked flow, can avoid flat pipe 20 to insert too shallowly again and reduce welding strength.
As shown in fig. 1 and 4, in an embodiment, the limiting portion 12 includes a second protrusion 122, the second protrusion 122 is disposed on the inner wall of the adapter tube 10 and extends toward a direction away from the inner wall of the adapter tube 10, the second protrusion 122 is disposed close to the first pipe orifice 11 relative to the first protrusion 121, a height of the second protrusion 122 protruding from the inner wall of the adapter tube 10 is less than a height of the first protrusion 121 protruding from the inner wall of the adapter tube 10, and the second protrusion 122 is used for abutting against an outer side wall of the flat pipe 20, so as to mainly prevent the flat pipe 20 from shaking relative to the inner wall of the adapter tube 10.
Specifically, referring to fig. 4 and 5, in order to ensure the limiting effect of the second protrusion 122 on the flat tube 20, the second protrusion 122 needs to be in interference fit with the outer side wall of the flat tube 20; the height of the second protrusion 122 protruding from the inner wall of the adapter tube 10 is defined as H 4 The second protrusion 122 is disposed on the first inner wall 13 and/or the second inner wall 14, and the height H of the flat tube 20 1 The height H of the second protrusion 122 protruding relative to the inner wall of the adapter tube 10 4 A distance H between the first inner wall 13 and the second inner wall 14 2 Satisfy the relation of 0mm ≦ H 4 -(H 2 -H 1 )]Less than or equal to 0.2mm. Namely, [ H ] 4 -(H 2 -H 1 )]May be 0mm, 0.1mm, 0.2mm or any value falling within the range of values.
Note that, by making the height H of flat tube 20 1 The height H of the second protrusion 122 protruding relative to the inner wall of the adapter tube 10 4 A distance H between the first inner wall 13 and the second inner wall 14 2 Satisfy the relation of 0mm ≤ H 4 -(H 2 -H 1 )]Be less than or equal to 0.2mm to guarantee interference fit between the protruding 122 of second and flat pipe 20, and then make the protruding 122 of second be fixed in flat pipe 20 in adapter tube 10, solved flat pipe 20 and produced the problem of shifting with adapter tube 10 welding process.
The number of the second protrusions 122 may be one, two, three or more in the circumferential direction or the axial direction of the inner wall of the adapter tube 10, and the number of the second protrusions 122 is not limited herein.
Alternatively, in the present embodiment, the shape of the second protrusion 122 may be a semicircle, a square, or a trapezoid, which is not limited herein.
It should be noted that, in the present embodiment, the first protrusion 121 or the second protrusion 122 may be disposed only on the inner wall of the adapter tube 10, and of course, the first protrusion 121 and the second protrusion 122 may also be disposed at the same time. The first protrusion 121 and the second protrusion 122 may be formed on the outer wall of the adapter tube 10 by press working.
In order to ensure the welding strength between the flat tube 20 and the adapter tube 10, a gap for penetration of the molten solder needs to be left between the inner wall of the adapter tube 10 and the outer wall of the flat tube 20, and the size of the gap needs to be within a proper range. Height H of flat tubes 20 1 And a distance H between the first inner wall 13 and the second inner wall 14 2 Satisfies the relation of 0.02mm ≦ (H) 2 -H 1 ) Less than or equal to 0.4mm, i.e., (H) 2 -H 1 ) The value of (b) may be 0.02mm, 0.1mm, 0.2mm, 0.3mm, 0.4mm or any value falling within the range of values.
It should be noted that the gap between the inner wall of the adapter tube 10 and the outer wall of the flat tube 20 cannot be too small, which may cause the solder to be unable to flow; the clearance between the inner wall of adapter tube 10 and the outer wall of flat pipe 20 also can not be too big, too big can lead to unable welding between adapter tube 10 and the flat pipe 20. By making the height H1 of flat tube 20 and the distance H between first inner wall 13 and second inner wall 14 2 Satisfies the relation of 0.02mm ≦ (H) 2 -H 1 ) Less than or equal to 0.4mm, thereby ensuring the clearance fit between the outer wall of the flat pipe 20 and the inner wall of the adapter pipe 10, and being favorable for the flow of the solder.
Further, in an embodiment of the present invention, the adapter tube 10 has a second tube orifice 15, the second tube orifice 15 is located at one end of the adapter tube 10 far from the first tube orifice 11, the second tube orifice 15 is circular, and the second tube orifice 15 is used for being connected with the capillary 31. Because the capillary 31 is particularly thin and has a circular cross section, and the cross section of the flat tube 20 is in the shape of a strip hole, the capillary and the flat tube cannot be directly connected in a butt joint manner, and the connection between the capillary and the flat tube needs to be realized by the switching of the switching tube 10, wherein one end of the switching tube 10 close to the capillary 31 is set to be circular and matched with the capillary 31, and one end of the switching tube 10 close to the flat tube 20 is set to be strip-shaped and matched with the flat tube 20.
In another embodiment of the present invention, in the multi-row micro-channel heat exchanger 100, the adapter tube 10 is a bent tube, the two ends of the adapter tube 10 all have the first pipe orifice 11, and the two ends of the adapter tube 10 are used for connecting the flat tubes 20 of the adjacent rows. Because bend flat pipe among the current microchannel heat exchanger and realize multirow flat pipe usually, flat pipe bend and can cause flat pipe damage, moreover, bend radius great, can increase microchannel heat exchanger's whole volume to, at the in-process of bending, can lead to the fin to take place to warp and influence heat exchange efficiency, consequently the utility model discloses an adjacent flat pipe 20 is connected to switching pipe 10 to avoid fin 40 to bend and take place to warp. When the two ends of the adapter tube 10 are connected to the flat tubes 20, the two ends of the adapter tube 10 are provided with the first protrusions 121 and the second protrusions 122.
The utility model provides an adapter tube 10 is through making spacing portion 12 butt in flat pipe 20's one end and/or butt in flat pipe 20's lateral wall for it is spacing to flat pipe 20, thereby guarantee the connection fixity between flat pipe 20 and the adapter tube 10, and then make flat pipe 20 and adapter tube 10 can not produce the phenomenon of aversion in welding process, strengthened flat pipe 20 and adapter tube 10's welding performance.
As shown in fig. 6, the utility model discloses still provide following technical scheme:
the utility model provides a microchannel heat exchanger 100, includes flat pipe 20, distributor 30 and foretell adapter tube 10, and adapter tube 10 is a plurality of, is equipped with many capillaries 31 on the distributor 30, and the one end of part adapter tube 10 is connected in capillary 31, and the other end is connected in flat pipe 20, and the both ends of part adapter tube 10 all are connected in flat pipe 20. That is to say, the adapter tube 10 connected to the capillary tube adopts the structure that the tube mouth at one end is circular, the tube mouth at the other end is in a long strip hole shape, and the adapter tube 10 with two ends both connected to the flat tube 20 adopts the bent tube structure.
Further, the microchannel heat exchanger 100 further comprises a plurality of fins 40, the plurality of fins 40 are arranged in parallel, the fins 40 are provided with insertion grooves 41, the plurality of flat tubes 20 are arranged in parallel to form a plurality of layers, and the flat tubes 20 are arranged in the insertion grooves 41 in a penetrating manner; the fins 40 are arranged in multiple rows, each row of fins 40 includes multiple rows of insertion slots 41 arranged at intervals, and the insertion slots 41 on the same row of fins 40 are arranged in a staggered manner along the height direction of the microchannel heat exchanger 100.
It should be noted that, the inserting grooves 41 on the fins 40 are arranged in a staggered manner, so that the flat tubes 20 inserted into the inserting grooves 41 are arranged in a staggered manner, and further, the heat exchange area of the flat tubes 20 is increased, so as to increase the heat exchange amount of the microchannel heat exchanger 100.
The microchannel heat exchanger 100 further includes a collecting pipe 50, and the collecting pipe 50 is connected to the outlet of the flat pipe 20 and is used for collecting the medium.
When the flat tubes 20 of the microchannel heat exchanger 100 are in multiple single rows, one end of the flat tube 20 is connected to the distributor 30 through the adapter tube 10 and the capillary tube 31, and the other end is connected to the collecting tube 50; when the flat tubes 20 of the microchannel heat exchanger 100 are in multiple rows, one end of the first row of flat tubes 20 is connected to the distributor 30 through the adapter tube 10 and the capillary tube 31, the other end is connected to the adapter tube 10, and the outlet of the last row of flat tubes 20 is connected to the collecting pipe 50.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A transfer pipe is arranged in a micro-channel heat exchanger and used for connecting a flat pipe (20);
the adapter tube is characterized in that the adapter tube is provided with a first tube opening (11) matched with the flat tube (20), the first tube opening (11) is used for the flat tube (20) to be inserted, the inner wall of the adapter tube is provided with a limiting part (12), the limiting part (12) is abutted to one end of the flat tube (20) and/or abutted to the side wall of the flat tube (20) and used for limiting the flat tube (20).
2. The adapter tube according to claim 1, wherein the limiting portion (12) comprises a first protrusion (121) and a second protrusion (122), the first protrusion (121) and the second protrusion (122) are arranged at intervals along the length direction of the adapter tube, the first protrusion (121) is arranged far away from the first tube opening (11) relative to the second protrusion (122), the height of the first protrusion (121) protruding out of the inner wall of the adapter tube is larger than the height of the second protrusion (122) protruding out of the inner wall of the adapter tube, the first protrusion (121) is used for abutting against one end of the flat tube (20), and the second protrusion (122) is used for abutting against the outer side wall of the flat tube (20).
3. The adapter tube according to claim 2, characterized in that the second projection (122) projects a height H with respect to the inner wall of the adapter tube 4 The height of the flat pipe (20) is H 1 The adapter tube is internally provided with a first inner wall (13) and a second inner wall (14) which are oppositely arranged, the second bulge (122) is arranged on the first inner wall (13) and/or the second inner wall (14), and the distance between the first inner wall (13) and the second inner wall (14) is H 2 ，0mm≤[H 4 -(H 2 -H 1 )]≤0.2mm。
4. The adapter tube according to claim 2, characterized in that the first protrusion (121) is semicircular, square or trapezoidal and/or the second protrusion (122) is semicircular, square or trapezoidal.
5. According toThe adapter tube according to claim 2, characterized in that said first protrusion (121) protrudes with respect to the inner wall of said adapter tube by a height H 3 The height of the flat pipe (20) is H 1 The adapter tube is internally provided with a first inner wall (13) and a second inner wall (14) which are oppositely arranged, the first bulge (121) is arranged on the first inner wall (13) and/or the second inner wall (14), and the distance between the first inner wall (13) and the second inner wall (14) is H 2 ，0.2mm≤[H 3 -(H 2 -H 1 )]≤3mm。
6. The adapter tube according to claim 2, characterized in that the first projection (121) is spaced from the end face of the first orifice (11) by a distance L 1 ，2mm≤L 1 ≤10mm。
7. Adapter tube according to claim 1, characterized in that the flat tubes (20) have a height H 1 The adapter tube is internally provided with a first inner wall (13) and a second inner wall (14) which are oppositely arranged, and the distance between the first inner wall (13) and the second inner wall (14) is H 2 ，0.02mm≤(H 2 -H 1 )≤0.4mm。
8. The adapter tube according to claim 1, characterized in that it has a second orifice (15), said second orifice (15) being located at the end of said adapter tube remote from said first orifice (11), said second orifice (15) being circular; or the adapter tube is a bent tube, and the first tube orifice (11) is arranged at each of the two ends of the adapter tube.
9. A microchannel heat exchanger, characterized in that, includes flat pipe (20), distributor (30) and according to the adapter of any one of claims 1-8, the adapter is a plurality of, be equipped with many capillaries (31) on distributor (30), part one end of adapter connect in capillary (31), the other end connect in flat pipe (20), part both ends of adapter all connect in flat pipe (20).
10. The microchannel heat exchanger according to claim 9, further comprising a plurality of fins (40), wherein the plurality of fins (40) are arranged in parallel, the fins (40) are provided with insertion grooves (41), the flat tubes (20) are arranged in parallel to form a plurality of layers, and the flat tubes (20) are inserted into the insertion grooves (41); the fins (40) are arranged in multiple rows, each row of fins (40) comprises multiple rows of inserting grooves (41) which are arranged at intervals, and the inserting grooves (41) on the same row of fins (40) are arranged in a staggered mode along the height direction of the micro-channel heat exchanger.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221483863.5U CN218002296U (en) | 2022-06-13 | 2022-06-13 | Adapter tube and micro-channel heat exchanger thereof |
| PCT/CN2022/129911 WO2023078399A1 (en) | 2021-11-04 | 2022-11-04 | Micro-channel heat exchanger |
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| CN202221483863.5U CN218002296U (en) | 2022-06-13 | 2022-06-13 | Adapter tube and micro-channel heat exchanger thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116379807A (en) * | 2023-06-02 | 2023-07-04 | 广东美的暖通设备有限公司 | Heat exchange assembly, micro-channel heat exchanger and air conditioner |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116379807A (en) * | 2023-06-02 | 2023-07-04 | 广东美的暖通设备有限公司 | Heat exchange assembly, micro-channel heat exchanger and air conditioner |
| CN116379807B (en) * | 2023-06-02 | 2024-01-02 | 广东美的暖通设备有限公司 | Heat exchange assembly, micro-channel heat exchanger and air conditioner |
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