CN216745578U - Heat exchanger - Google Patents

Abstract

The application relates to the technical field of heat exchange, in particular to a heat exchanger. This heat exchanger includes: the flat tube is bent to form a bent part and two sections of inserting parts connected with the bent part; the fin is provided with a plurality of flat tube grooves at least on one side along the width direction of the fin, and the flat tube grooves are distributed at intervals along the length direction of the fin; the fins are inserted into the insertion parts through the flat tube grooves; wherein, along the width direction of fin, one side edge that grafting portion is located the notch of flat tube groove is seted up the side parallel and level of flat tube groove on with the fin. According to the heat exchanger, when the flat pipe is bent, the bending tool cannot touch and extrude the fins, so that whether the fins are collided and damaged or not does not need to be concerned in the bending process, and the difficulty of bending the pipe is reduced; and when the assembly is in a shape, the edges of the flat pipes are stressed, so that the fins are prevented from being damaged, and the assembly of products is facilitated.

Description

Heat exchanger

Technical Field

The application relates to the technical field of heat exchange, in particular to a heat exchanger.

Background

The main components of the air conditioning system comprise a compressor, a condenser, a throttling device and a heat exchanger, wherein the heat exchanger plays a role in heat exchange with the outside, and the heat exchanger usually adopts a fin heat exchanger which is mainly realized through fins and flat pipes on the heat exchanger.

A plurality of flat tube grooves are formed in the side faces of fins of an existing fin heat exchanger, flat tubes are correspondingly inserted into the flat tube grooves, and then the flow direction of fluid in the flat tubes is changed by bending the flat tubes. However, when bending the bent pipe, the bending tool always abuts against the fins, and the fins are thin and are easy to bend or bend and damage, so that the fins need to be considered when bending the bent pipe, the bending difficulty is increased, and when assembling a plurality of fins and a plurality of flat pipes, the fins are easy to collide, and the fins are damaged.

SUMMERY OF THE UTILITY MODEL

Therefore, a heat exchanger which is convenient to assemble and is not easy to damage fins is needed.

A heat exchanger, comprising: the flat pipe is bent to form at least two sections of inserting parts; the fin is provided with a plurality of flat tube grooves at least on one side along the width direction of the fin, and the flat tube grooves are distributed at intervals along the length direction of the fin; the fins are inserted into the insertion parts through the flat tube grooves; the inserting part is positioned on one side edge of the notch of the flat tube groove and is parallel to or protrudes out of the side face, provided with the flat tube groove, of the fin along the width direction of the fin.

It can be understood that the strength of the flat tube is higher than that of the fin, the fin is firstly inserted into the flat tube through the flat tube groove during assembly, and the edge of the insertion part is flush with or protrudes out of the side face of the fin, which is provided with the flat tube groove, so that when the flat tube is bent, an accessory for assembly or a tool for bending the flat tube abuts against the edge of the flat tube along the width direction of the fin, so that the tool cannot extrude the fin, the fin does not need to be concerned during bending processing, and the difficulty of bending the tube is reduced; and, when carrying out the assembly combination with fin and flat pipe, the edge atress of flat pipe to can prevent to be located the fin of notch one side and receive the extrusion, prevent that the fin is impaired, be favorable to the product equipment.

In one embodiment, the width of the flat pipe groove is Gw, the height of the flat pipe groove is Gt, and Gw/Gt is more than or equal to 1.5 and less than or equal to 10.

In one embodiment, the fin comprises a body portion and a flange structure, the body portion and the flange structure are connected with each other, the flat tube groove is formed in the body portion, the flange structure is arranged at the flat tube groove, the flange structure protrudes out of the body portion, and the flange structure is used for being matched with the flat tube.

It can be understood that the flange structure increases the contact area with the flat pipe, thereby effectively improving the stability of the flat pipe inserted in the flat pipe groove.

In one embodiment, the flange structure comprises a first flange, and the first flange is arranged around the periphery of the flat pipe groove, so that the first flange is made to enclose a shape matched with the flat pipe.

In one embodiment, the height of the first flanging is H1, and H1 is more than 0 and less than or equal to 1 mm.

In one embodiment, the flange structure further includes: the second flanging is multiple and is arranged on the first flanging at intervals along the circumferential direction of the flat pipe groove, and the plane where the second flanging is located is overlapped with the plane where the first flanging is located.

In one embodiment, the height of the second flanging is H2, the height of the flat tube groove is Gt, and the height is more than 0.25 and less than H2/Gt and less than 1.

In one embodiment, the flange structure further includes: the third flanging is multiple and is arranged in one-to-one correspondence with the second flanging, each third flanging is arranged on one side, away from the first flanging, of the second flanging, and the third flanging and the second flanging are arranged at preset angles so that the third flanging avoids the flat pipe groove.

It can be understood that, when a plurality of fins set up with range upon range of mode interval, the third turn-ups of one of them fin is used for supporting and another fin that the interval was adjacent to be set up to realize the interval setting and the location of a plurality of fins, and the location is quick, improves the packaging efficiency and reduces the group length degree of difficulty, can also realize that the spaced distance between a plurality of fins is unanimous.

In one embodiment, the two sections of the inserting parts of each flat tube are arranged in a staggered mode.

In one embodiment, the fin is provided with a plurality of protruding parts, the protruding parts are sequentially distributed along the width direction of the fin to form a corrugated structure, and the corrugated structure extends along the length direction of the fin and penetrates through two ends of the fin.

The corrugated structure can facilitate the drainage of condensed water, and more molten water can directly flow down along the corrugated structure during defrosting, so that the drainage of the heat exchanger is smoother, the performance of the heat exchanger is improved, and the heat exchange efficiency of the heat exchanger is improved; moreover, the rigidity of the fins can be enhanced by the corrugated structure, so that the stability of the heat exchanger structure is improved.

Compared with the prior art, when the heat exchanger is assembled, the fins are firstly inserted into the flat tubes through the flat tube grooves, and the edges of the inserting parts are flush with or protrude out of the side faces of the fins, which are provided with the flat tube grooves, so that the strength of the flat tubes is higher than that of the fins, when the flat tubes are bent, the fitting for assembling or a tool for bending the flat tubes is abutted against the edges of the flat tubes along the width direction of the fins, so that the tools cannot extrude the fins, whether the fins are damaged by collision or not is not required to be concerned in the bending process, and the difficulty of bending the tubes is reduced; and, when carrying out the assembly combination with fin and flat pipe, the edge atress of flat pipe to can prevent to be located the fin of notch one side and receive the extrusion, prevent that the fin is impaired, be favorable to the product equipment.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, 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 application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view of assembly of flat tubes and fins in a heat exchanger provided in an embodiment of the present application.

FIG. 2 is a schematic view of the assembly of multiple fins of FIG. 1.

Fig. 3 is a schematic view of an assembly of a flat tube and a fin provided in another embodiment of the present application.

Fig. 4 is a schematic view of an assembly of flat tubes and fins according to still another embodiment of the present application.

Fig. 5 is a schematic structural diagram of a fin according to another embodiment of the present application.

Fig. 6 is a front view of the fin of fig. 5.

FIG. 7 is a side view of the fin of FIG. 6.

Reference numerals: 100. a heat exchanger; 10. flat tubes; 20. a fin; 21. a body portion; 22. a flanging structure; 221. a first flanging; 222. second flanging; 223. third flanging; 23. a boss portion; 24. a flat pipe groove.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application 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 application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

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 the like in the description of the present application is for purposes of illustration only and is not intended to represent the only 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 application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact via an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate 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 application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the description of the present application, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 7, an embodiment of the present application provides a heat exchanger 100, where the heat exchanger 100 includes flat tubes 10 and fins 20, where a plurality of flat tubes 10 are arranged at intervals; each flat tube 10 is bent to form at least two sections of inserting parts; the plurality of fins 20 are arranged at intervals; along the width direction of the fins 20, at least one side of each fin 20 is provided with a plurality of flat tube grooves 24, and the plurality of flat tube grooves 24 are distributed at intervals along the length direction of the fins 20; a plurality of fins 20 are inserted into the insertion part through the flat tube grooves 24; along the width direction of the fin 20, one side edge of the slot of the flat tube groove 24 of the insertion part is flush with the side surface of the fin 20 provided with the flat tube groove 24, or one side edge of the slot of the flat tube groove 24 of the insertion part protrudes out of the side surface of the fin 20 provided with the flat tube groove 24.

It can be understood that the strength of the flat tube 10 is higher than that of the fins 20, when the flat tube 10 is assembled, the fins 20 are firstly inserted into the flat tube 10 through the flat tube grooves 24, the edges of the insertion parts are flush with or protrude from the side faces of the fins, which are provided with the flat tube grooves, and the strength of the flat tube 10 is higher than that of the fins 20, so that when the flat tube 10 is bent, an accessory for assembling or a tool for bending the flat tube 10 abuts against the edges of the flat tube 10 along the width direction of the fins 20, so that the tool cannot extrude the fins 20, whether the fins 20 are damaged by collision or not is not required to be concerned in the bending process, and the difficulty of bending is reduced; and, when a plurality of fins 20 were assembled in parallel along its width direction, the edge atress of flat pipe 10 to can prevent to be located the fin 20 of notch one side and receive the extrusion, prevent that fin 20 from damaging, be favorable to the product equipment.

Specifically, in this embodiment, please refer to fig. 3, an edge of one side of the slot of the flat tube slot 24 of the insertion part is flush with the side of the fin 20 with the flat tube slot 24, so that the insertion part is surrounded by the fin, thereby improving the heat exchange efficiency of the heat exchanger. In one embodiment, referring to fig. 1 and 2, a plurality of flat tubes 10 and a plurality of fins 20 are provided, wherein the plurality of flat tubes 10 are arranged at intervals, the plurality of fins 20 are arranged at intervals, and the plurality of fins are inserted into the insertion portion of each flat tube through the flat tube grooves 24, so that the assembly of the plurality of flat tubes and the plurality of fins is realized. Of course, in other embodiments, the number of the flat tubes 10 and the fins 20 is not limited, and for example, only one serpentine fin may be provided.

In one embodiment, each flat tube 10 is bent to form a bent portion, wherein two segments of the insertion portion are connected to two ends of the bent portion.

The flat tube 10 may be bent to form a U shape, a V shape, an L shape, or other shapes, which is not limited herein. In this embodiment, referring to fig. 2, a plurality of fins are stacked to form two rows of fin groups, the bent tube is bent to form two sections of insertion parts, and the two sections of insertion parts are correspondingly inserted into the two rows of fin groups. Of course, in other embodiments, the plurality of fins 20 may be stacked to form at least two rows or more of fin groups.

Referring to fig. 6, the width of the flat tube slot 24 is Gw, the height of the flat tube slot 24 is Gt, 1.5 ≦ Gw/Gt ≦ 10, for example, Gw/Gt is 1.5 or 3 or 8 or 10, etc., although other values are also possible. So set up, make flat pipe 10 stable insert establish in flat tube groove 24, improve the stability of pegging graft to make fin 20 and flat pipe 10's connection stable.

Referring to fig. 5 to 7, the fin 20 includes a body 21 and a flange structure 22 connected to each other, the flat tube slot 24 is disposed on the body 21, the flange structure 22 is disposed at the flat tube slot 24, the flange structure 22 protrudes from the body 21, and the flange structure 22 is used for matching with the flat tube 10. Flat pipe 10 inserts and locates in flat tube groove 24, and turn-ups structure 22 is spacing with flat pipe 10 cooperation to make stable the inserting of flat pipe 10 establish in flat tube groove 24, and set up turn-ups structure 22 and increased the area of contact of fin 20 with flat pipe 10, thereby increase the frictional force of fin 20 with flat pipe 10, prevent effectively that flat pipe 10 from shifting, improve the stability to flat pipe 10 grafting location.

Specifically, in the present embodiment, referring to fig. 5, the flanging structure 22 includes a first flanging 221, and the first flanging 221 is disposed around the periphery of the flat tube slot 24, so that the first flanging 221 is formed into a shape adapted to the flat tube 10. The contact area between the first flanging 221 and the flat pipe 10 is increased, so that the positioning stability of the flat pipe 10 is improved.

Preferably, in the embodiment, the height of the first turned-over edge 221 is H1, and H1 is more than 0 and less than or equal to 1 mm. For example, the height of the first flange 221 is 0.3mm or 0.8mm or 1mm, but other values are also possible. Specifically, the height of the first flange 221 refers to the height of the first flange 221 protruding from the main body 21. The height of the first flanging 221 is moderate, so that the inserting stability of the flat tube 10 is improved, the processing is convenient, and meanwhile, the first flanging 221 is not easy to deform due to overhigh height. Of course, in other embodiments, the height of the first flange 221 is not limited to the above, for example, the height of the first flange 221 may be greater than 1 mm.

With reference to fig. 5 to 7, the flange structure 22 further includes a plurality of second flanges 222, the second flanges 222 are disposed on the first flange 221 at intervals along the circumferential direction of the flat tube slot 24, and the plane of the second flange 222 coincides with the plane of the first flange 221. The contact area between the flat pipe 10 and the second flanging 222 is further increased, and the plurality of second flanging 222 are used for auxiliary positioning and limiting the peripheral side of the flat pipe 10, so that the stability of inserting and mounting the flat pipe 10 is improved; in addition, the plurality of second flanges 222 are arranged at intervals, so that the fins 20 can be conveniently detached through the gaps between two adjacent second flanges 222, and the mounting and detaching speed is effectively increased. In other embodiments, the specific structure of the second flange 222 is not limited to the above.

In the present embodiment, the height of the second flange 222 is H2, the height of the flat tube slot 24 is Gt, and 0.25 < H2/Gt < 1. For example, H2/Gt is 0.2 or H2/Gt is 0.8, although other values are possible. Specifically, the height of the second flange 222 is the height of the second flange 222 protruding from the first flange 221. So set up, can enough guarantee the stability of pegging graft, also can be convenient for dismantle. Of course, in other embodiments, the relationship between the height of the second flange 222 and the height of the flat tube slot 24 may not be limited to the above.

Referring to fig. 5 to 7, the flange structure 22 further includes a plurality of third flanges 223, the plurality of third flanges 223 and the plurality of second flanges 222 are disposed in a one-to-one correspondence manner, each third flange 223 is disposed on one side of the second flange 222 away from the first flange 221, and the third flanges 223 and the second flanges 222 are disposed at a preset angle, so that the third flanges 223 avoid the arrangement of the flat tube slots 24. It can be understood that, when the plurality of fins 20 are arranged at intervals in a stacking manner, the third turned-over edge 223 of one of the fins 20 is used for supporting and spacing another fin 20 which is adjacently arranged, so that the arrangement and positioning of the plurality of fins 20 are realized, the positioning is rapid, the assembly efficiency is improved, the group length difficulty is reduced, and the distance between the plurality of fins 20 is consistent.

Referring to fig. 1, two sections of the insertion parts of each flat tube 10 are arranged in a staggered manner, and when a plurality of flat tubes are arranged, every two adjacent insertion parts are arranged in a staggered manner. When the flat tubes 10 are arranged in a staggered mode, the two sections of inserting parts are not on the same straight line along the direction far away from the windward side, so that heat exchange of the inserting parts is not affected, the fins 20 behind the flat tubes 10 can help heat exchange of the flat tubes, and the fins 20 can be fully utilized. Of course, in other embodiments, two segments of the insertion portion of each flat tube 10 may be arranged side by side, in other words, the two segments of the insertion portion are arranged side by side along the width direction or the length direction of the fin 20.

Specifically, referring to fig. 1, the fins 20 are arranged in two rows, wherein one side of each fin 20 is provided with a plurality of flat tube slots 24, and the flat tube slots 24 arranged on the two rows of fins 20 are arranged in a staggered manner, so that two sections of insertion parts formed by bending each flat tube 10 are respectively and correspondingly inserted into the flat tube slots 24 of the two rows of fins, thereby realizing the staggered arrangement of the insertion parts. Of course, in other embodiments, a plurality of flat tube grooves 24 may be respectively formed on both sides of each fin 20, and the flat tube grooves 24 on both sides of the fin 20 are arranged at intervals in a staggered manner along the width direction of the fin 20, so that two sections of insertion parts formed by bending each flat tube 10 are respectively and correspondingly inserted into the flat tube grooves 24 on both sides of the fin 20, thereby realizing the staggered arrangement of the two sections of insertion parts.

Referring to fig. 3 to 6, the fin 20 has a plurality of protruding portions 23, the plurality of protruding portions 23 are sequentially distributed along the width direction of the fin 20 to form a corrugated structure, the corrugated structure extends along the length direction of the fin 20 and penetrates through two ends of the fin 20, and the protruding portions 23 are disposed on the side surface of the fin 20 close to the induced air side. The plurality of the protruding parts 23 are arranged to form a corrugated structure, so that condensed water can be conveniently discharged, more melted water can directly flow down along the corrugated structure during defrosting, and the water drainage of the heat exchanger 100 is smoother, so that the performance of the heat exchanger 100 is improved, and the heat exchange efficiency of the heat exchanger 100 is improved; moreover, the provision of the corrugated structure can enhance the rigidity of the fin 20, thereby improving the structural stability of the heat exchanger 100.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure 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 application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims (10)

1. A heat exchanger, comprising:

the flat pipe (10), the said flat pipe (10) is bent to form at least two sections of insertion parts;

the fin (20) is provided with a plurality of flat tube grooves (24) on at least one side of the fin (20) along the width direction of the fin (20), and the flat tube grooves (24) are distributed at intervals along the length direction of the fin (20); the fins (20) are inserted into the insertion parts through the flat tube grooves (24);

along the width direction of the fins (20), the edge of one side of the insertion part, which is positioned at the notch of the flat tube groove (24), is flush with or protrudes out of the side surface of the fins (20) provided with the flat tube groove (24).

2. The heat exchanger according to claim 1, wherein the width of the flat tube groove (24) is Gw, the height of the flat tube groove (24) is Gt, and 1.5 ≦ Gw/Gt ≦ 10.

3. The heat exchanger according to claim 1, wherein the fin (20) comprises a body portion (21) and a flange structure (22) connected to each other, the flat tube groove (24) is disposed on the body portion (21), the flange structure (22) is disposed at the flat tube groove (24), the flange structure (22) is disposed to protrude from the body portion (21), and the flange structure (22) is configured to be engaged with the flat tube (10).

4. The heat exchanger according to claim 3, characterized in that the flange structure (22) comprises a first flange (221), and the first flange (221) is arranged around the periphery of the flat tube groove (24) so that the first flange (221) is enclosed in a shape adapted to the flat tube (10).

5. The heat exchanger according to claim 4, characterized in that the height of the first flange (221) is H1, 0 < H1 ≦ 1 mm.

6. The heat exchanger according to claim 4, wherein the flange structure (22) further comprises:

the second flanging (222) is multiple, the second flanging (222) is arranged on the first flanging (221) at intervals along the circumferential direction of the flat pipe groove (24), and the plane where the second flanging (222) is located is overlapped with the plane where the first flanging (221) is located.

7. The heat exchanger of claim 6, wherein the second flange (222) has a height H2, and the flat tube slot (24) has a height Gt of 0.25 < H2/Gt < 1.

8. The heat exchanger according to claim 6, wherein the flange structure (22) further comprises:

third turn-ups (223), third turn-ups (223) are a plurality of, and are a plurality of third turn-ups (223) and a plurality of second turn-ups (222) one-to-one sets up, each third turn-ups (223) set up second turn-ups (222) are kept away from one side of first turn-ups (221), third turn-ups (223) with second turn-ups (222) are preset angle setting, so that third turn-ups (223) dodge flat tube groove (24) set up.

9. The heat exchanger according to claim 1, characterized in that the two sections of the plug-in connection of each flat tube (10) are arranged alternately.

10. The heat exchanger according to claim 1, wherein the fin (20) has a plurality of protrusions (23), and the plurality of protrusions (23) are sequentially distributed in the width direction of the fin (20) to form a corrugated structure, and the corrugated structure extends along the length direction of the fin (20) and penetrates through both ends of the fin (20).

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