WO2021068760A1 - Heat exchanger - Google Patents

Abstract

Disclosed in the present application is a heat exchanger, comprising a header set and a plurality of heat exchange assemblies, wherein the plurality of heat exchange assemblies are arranged in the lengthwise direction of headers, each of the heat exchange assemblies comprises a fin plate and at least one heat exchange pipe, the heat exchange assembly comprises a main heat exchange area, the heat exchange pipe is connected to the fin plate, the heat exchange pipe is connected between two headers in the lengthwise direction, an inner flowing channel of the heat exchange pipe enables inner cavities of the two headers to be in communication, at least part of the heat exchange pipe protrudes out of at least one side of the fin plate, at least two adjacent heat exchange pipes are staggered in the arrangement direction of the heat exchange assemblies in the main heat exchange areas corresponding to two adjacent heat exchange assemblies, and the two heat exchange pipes belong to the two adjacent heat exchange assemblies respectively. On the basis of the present application, improvement of the performance of the heat exchanger is facilitated.

Description

Heat Exchanger

This application requires that the application date is October 08, 2019, the application number is 201910948229.0, the name of the invention is "heat exchanger"; the application date is October 8, 2019, the application number is 201910947913.7, and the name of the invention is "change Heater”; and the priority of the Chinese patent application with the application date of October 08, 2019, the application number of 201910948701.0, and the invention-creation title “heat exchanger”, the entire content of which is incorporated into this application by reference.

Technical field

This application relates to the field of heat exchange, specifically, to a heat exchanger.

Background technique

Cars, households or commercial air-conditioning systems all need to use heat exchange devices. One of the related technologies is that the heat exchanger includes an integrated heat exchange tube and a fin plate; as shown in Figure 1, the same structure and integrated The fin plate 10 and the heat exchange tubes 20 are arranged in multiple rows. In the related art, after the heat exchange components composed of several integrated heat exchange tubes 20 and fin plates 10 are arranged, the heat exchange tubes 20 of the several heat exchange components correspondingly form several rows, and the heat exchange tubes 20 face the air with respect to the fin plate 10 The side circulation channel is protruding, and this channel structure causes a large pressure drop in the air side circulation channel, resulting in poor heat exchange performance of the heat exchanger, high energy consumption, and easy frosting.

Summary of the invention

This application is beneficial to improve the performance of the heat exchanger.

The application provides a heat exchanger, which includes two headers and a number of heat exchange components;

The collecting pipe includes a pipe body and an inner cavity located in the pipe body;

The plurality of heat exchange components are arranged along the length direction of the header; there is a gap for air circulation between two adjacent heat exchange components; each heat exchange component includes a fin plate and at least one heat exchange tube, The heat exchange assembly includes a main heat exchange zone, and in the main heat exchange zone, the heat exchange tube is connected to the fin plate;

The heat exchange tube is provided with an inner flow passage connecting the inner cavities of the two headers, and the inner flow passage of the heat exchange tube and the inner cavities of the two headers form a part of the refrigerant flow passage; In the main heat exchange zone corresponding to two adjacent heat exchange components, at least one group of two heat exchange tubes having an adjacent relationship are misaligned along the arrangement direction of the heat exchange components, and the two adjacent heat exchange tubes Each heat exchange tube belongs to the two adjacent heat exchange components, and for one of the heat exchange tubes, the other heat exchange tube is the one with the closest distance to the one of the heat exchange tubes in the heat exchange assembly. Heat pipe.

In this application, two adjacent heat exchange tubes are arranged in a staggered arrangement along the arrangement direction of the heat exchange components, which is beneficial to avoid the heat exchange tubes corresponding to the two adjacent heat exchange components from being concentratedly arranged on the path of the air-side flow channel. It is conducive to the uniformity of the air-side flow passage cross-section, reduces the influence of the sudden expansion and contraction of the flow passage structure on the fluid pressure drop, and improves the heat exchange performance of the heat exchanger.

The application also provides a heat exchanger, which includes a number of headers and a number of heat exchange components;

The header includes a tube body and an inner cavity; the plurality of heat exchange components are arranged along the length of the header, and there is a gap for air circulation between two adjacent heat exchange components;

The heat exchange assembly includes a fin plate and a number of heat exchange tubes, the heat exchange assembly includes a main heat exchange zone; in the main heat exchange zone, the plurality of heat exchange tubes are arranged along the width direction of the heat exchange assembly Distributed, the heat exchange tube is connected to the fin plate;

The plurality of heat exchange tubes of the heat exchange assembly are divided into at least two groups along the width direction of the heat exchange assembly, the number of heat exchange tubes in each group is at least one, and each group of heat exchange tubes are connected to two headers between;

For the two adjacent sets of heat exchange tubes, in the length direction of the heat exchange tubes, the inner flow passages of the two sets of heat exchange tubes are respectively connected to the inner cavities of two different headers on one side; The inner flow passages of the two sets of heat exchange tubes are connected to the inner cavity of the same header on the other side, or the inner flow passages of the two sets of heat exchange tubes are on the other side with the inner cavities of two different headers They are respectively connected, and the inner cavities of the two headers on the other side are connected, so that the refrigerant flows in opposite directions in the inner flow passages of the two sets of heat exchange tubes.

In the present application, the flow direction of the refrigerant in the two sets of heat exchange tubes is reversed, which is beneficial to extend the flow path of the refrigerant, thereby improving the heat exchange performance of the heat exchanger.

The application also provides a heat exchanger, which includes two headers and a number of heat exchange components;

The collecting pipe includes a pipe body and an inner cavity located in the pipe body;

The plurality of heat exchange components are arranged along the length of the header; there is a gap between two adjacent heat exchange components for air circulation; the heat exchange component includes a fin plate and a number of heat exchange tubes; the heat exchange The assembly includes a main heat exchange zone. In the main heat exchange zone, the plurality of heat exchange tubes are distributed along the width direction of the heat exchange assembly, and the heat exchange tubes are connected to the fin plate; the heat exchange tubes An inner flow passage connecting the inner cavities of the two headers is provided, and the inner flow passage of the heat exchange tube and the inner cavities of the two headers form a part of the refrigerant flow passage;

The heat exchange assembly further includes two connection areas located on both sides of the main heat exchange area in its length direction; the end of at least one of the two connection areas in the width direction of the heat exchange assembly has a size smaller than The size of the main heat exchange area in the width direction of the heat exchange assembly; the tube body of the header is in hermetically connected with the end of the connection area of the heat exchange assembly.

In the heat exchanger of the present application, the dimension of at least one connection area of the heat exchange component in the width direction of the heat exchange component is smaller than the dimension of the main heat exchange area in the width direction of the heat exchange component. When the pipes are connected and combined, it is beneficial to reduce the size of the collecting pipe in the width direction of the heat exchange assembly, reduce the thermal resistance effect caused by the wall thickness of the collecting pipe, and thereby improve the heat exchange performance of the heat exchanger.

Description of the drawings

Figure 1 is a schematic diagram of an integrated structure of related art fins and heat exchange tubes;

2 is a schematic diagram of the three-dimensional structure of the heat exchanger provided by the present application in an embodiment;

Fig. 3 is a schematic diagram of the exploded structure of the heat exchanger provided in Fig. 2 of the present application;

Fig. 4 is a schematic structural diagram of a specific embodiment of the heat exchange assembly provided by the present application;

Fig. 5 is a schematic structural diagram of another specific embodiment of the heat exchange assembly provided by the present application;

Fig. 6 is a schematic structural diagram of still another specific embodiment of the heat exchange assembly provided by the present application;

Fig. 7 is an enlarged schematic diagram of an embodiment of a partial structure of the heat exchange assembly provided by the present application;

Fig. 8 is a schematic diagram of a three-dimensional structure in another embodiment of the heat exchanger provided by the present application;

Fig. 9 is a schematic side view of another embodiment of the heat exchanger provided by the present application;

Fig. 10 is an enlarged schematic diagram of another embodiment of a partial structure of the heat exchange assembly provided by the present application;

FIG. 11 is an enlarged schematic diagram of an embodiment of a partial structure of the header provided by the present application;

Fig. 12 is an enlarged schematic diagram of another embodiment of a partial structure of the heat exchange assembly provided by the present application;

FIG. 13 is an enlarged schematic diagram of an embodiment of a partial structure of the header provided by the present application;

Fig. 14 is a schematic structural diagram of an embodiment of the multi-process heat exchanger provided by the present application;

15 is a schematic structural diagram of an embodiment of the connection between the second header and the fourth header provided by the present application;

16 is a schematic structural diagram of another embodiment of the connection between the second header and the fourth header provided by the present application;

Fig. 17 is a schematic structural diagram of another embodiment of the multi-process heat exchanger provided by the present application;

18 is a schematic structural diagram of another embodiment of the multi-process heat exchanger provided by the present application;

Fig. 19 is another schematic diagram of the structure of the multi-process heat exchanger provided in Fig. 18 of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application. There are several specific implementation manners in this application, and the features in these implementation manners can be combined with each other if there is no conflict. When the description refers to the drawings, unless otherwise specified, the same numbers in different drawings indicate the same or similar elements.

The singular forms of "a", "said" or "the" used in the specification and claims of this application are also intended to include plural forms, unless the context clearly indicates other meanings. It should be understood that the terms "first", "second" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish the naming of features. . Similarly, similar words such as "one" or "one" do not mean a quantity limit, but mean that there is at least one. Unless otherwise indicated, the words "front", "rear", "upper", "lower" and other similar words in this application are only for convenience of description, and are not limited to a specific location or a spatial orientation. "Include" or "include" and other similar words are an open-ended way of expression, meaning that the element before "include" or "include" now covers the element appearing after "include" or "include" and its equivalents, This does not exclude that elements appearing before "including" or "including" may also include other elements. The term "several" used in this application means two and more than two.

Please refer to FIG. 2 and FIG. 3. The present application provides a heat exchanger 10 which includes a header group and a plurality of heat exchange components 101. In an embodiment of the present application, the header set includes two headers 100 respectively located on both sides of the length direction of the heat exchange assembly 101, and each header 100 includes a longitudinal tube body 201 and The inner cavity 202 in the tube body 201. The length direction of the heat exchange assembly 101 is illustrated by the solid line segment L with arrows on both sides in FIG. 2, and the width direction of the heat exchange assembly 101 is illustrated by the solid line segment W with arrows on both sides in FIG. 2.

The heat exchange assembly 101 is connected to the header 100, and several heat exchange assemblies 101 are arranged at intervals along the length direction D of the header 100. The length direction D of the header 100 can refer to the direction indicated by the dashed line in FIG. 2. Referring to FIG. 2, in an embodiment of the present application, the length direction of the heat exchange assembly 101 is perpendicular to the width direction of the heat exchange assembly 101, and the length direction D of the header is perpendicular to the length direction of the heat exchange assembly 101. And the width direction of the heat exchange assembly 101. The gap between two adjacent heat exchange components 101 forms an air side flow channel.

Among the plurality of heat exchange assemblies 101, each heat exchange assembly 101 includes a fin plate 203 and at least one heat exchange tube 204. The heat exchange components 101 are arranged at intervals, and the gap between adjacent heat exchange components 101 can circulate heat exchange air flow. Refer to the direction indicated by the arrow in FIG. 4, that is, two adjacent fin plates 203 are opposite to each other. The surface will allow the heat exchange airflow to pass through.

The heat exchange assembly 101 includes a main heat exchange area 301. In the main heat exchange area 301, the fin plate 203 is integrated with the heat exchange tube 204, wherein the heat exchange tube 204 is fixedly connected to the surface of the fin plate 203, or the fin The plate 203 includes a plurality of sub-boards 2031, and the heat exchange tube 204 is connected between two adjacent sub-boards 2031. The heat exchange tube 204 is connected between the two headers 100 in the length direction. The heat exchange tube 204 includes an inner flow passage 2041. The inner flow passage 2041 of the heat exchange tube 204 communicates with the inner cavities 202 of the two headers 100, The inner flow passage 2041 of the heat exchange tube 204 and the inner cavity 202 of the header 100 form a part of the refrigerant flow passage.

The heat exchange assembly 101 also includes two connection areas 302 located on both sides of the main heat exchange area 301 in its length direction. Refer to FIG. 10 and FIG. 12 for illustration. The end of the connection area 302 is mainly used for collecting The tube 100 is connected and fixed, the heat exchange assembly 101 may not be provided with the fin plate 203 in the connection area 302, that is, the heat exchange tube 204 may extend beyond the fin plate 203 in the length direction, and the end of the excess heat exchange tube 204 is connected to the header 100 Matching connection. It should be understood that the end includes a small section of the physical structure of the heat exchange assembly, which is located outside the length of the heat exchange assembly, rather than just a "point".

Wherein, the collecting pipe 100 is used for conveying refrigerant, and the refrigerant is conveyed to the heat exchange tube 204 through the collecting pipe 100. The heat exchange tube 204 can exchange heat with the air flow through its tube wall 2042 and the fin plate 203. The fin plate 203 with a relatively large area can exchange heat with the air around the fin plate 203, thereby raising or lowering the fin plate. 203 The temperature of the surrounding gas.

The heat exchange tube 204 is connected to the fin plate 203. The heat exchange tube 204 is formed on the surface of the fin plate 203, or the heat exchange tube 204 is connected between two adjacent sub-plates 2031, and most of the heat exchange tube 204 in the length direction is in contact with the fin plate 203, so that The heat exchange area between the heat exchange tube 204 and the fin plate 203 is maximized, and the heat exchange amount and heat exchange efficiency between the heat exchange tube 204 and the fin plate 203 are maximized.

At least part of the heat exchange tube 204 protrudes from at least one side of the fin plate 203 in the arrangement direction of the heat exchange assembly 101. In an embodiment provided by the present application, the height of the heat exchange tube 204 in the arrangement direction of the heat exchange assembly 101 is greater than the thickness of the fin plate 203. Optionally, the fin plate 203 may be a relatively thin elongated plate-like structure, and the fin plate 203 may include two opposite surfaces. The height or diameter of the heat exchange tube 204 in the arrangement direction of the heat exchange assembly 101 is greater than the thickness of the fin plate 203, so no matter if the heat exchange tube 204 is connected between two adjacent sub-parts 2031, or exchange The heat pipe 204 is formed on the surface of the fin plate 203, and the heat exchange pipe 204 protrudes from at least one surface of the fin plate 203.

Referring to the projection of the main heat exchange area of several heat exchange assemblies 101 on a plane perpendicular to the length of the heat exchange assembly 101 as shown in FIG. 4, at least one of the main heat exchange areas corresponding to two adjacent heat exchange assemblies 101 A group of adjacent heat exchange tubes 204 are arranged in a staggered arrangement, wherein the two adjacent heat exchange tubes 204 belong to the two adjacent heat exchange assemblies 101, and for one of the heat exchange tubes 204, The other heat exchange tube 204 is the heat exchange tube closest to the one of the heat exchange tubes 204 in the heat exchange assembly 101 to which the other heat exchange tube 204 belongs. For example, two heat exchange components 101 are respectively marked as heat exchange component A and heat exchange component B, one heat exchange tube in heat exchange component A is marked as heat exchange tube A, and there are several heat exchange components in heat exchange component B. The heat exchange tube closest to the heat exchange tube A is recorded as the heat exchange tube B, so that the heat exchange tube A and the heat exchange tube B are a group of heat exchange tubes that have an adjacent relationship.

In the schematic diagram of FIG. 4, the heat exchange tube 204 of the heat exchange assembly 101 and the heat exchange tube 204 of another adjacent heat exchange assembly 101 are arranged in a staggered manner. Generally, the tube diameter of the heat exchange tube 204 is larger than the thickness of the fin plate 203, and corresponding to the main heat exchange area of the adjacent heat exchange assembly 101, the staggered arrangement is beneficial to avoid the heat exchange tube 204 being concentratedly arranged in the air side flow channel. From the perspective of the overall flow path on the air side, the position where the flow cross section is larger and the position where the flow cross section is smaller are homogenized, reducing the influence of the sudden expansion and contraction flow path structure on the fluid pressure drop. This application is beneficial to reduce heat exchange energy consumption , The same flow of air can provide more heat exchange, thereby improving the heat exchange performance of the heat exchanger 10. At the same time, it helps the heat exchanger 10 to delay frosting.

In an embodiment provided by this application, the thickness of the fin plate 203 is 0.05 to 0.5 mm, the inner diameter of the heat exchange tube 204 is 0.4 to 3.0 mm, and the outer diameter of the heat exchange tube 204 is 0.6 to 5 mm. In the heat exchange assembly 101, the distance between adjacent heat exchange tubes 204 is 3-20 mm, and the distance between the fin plates 203 of two adjacent heat exchange assemblies 101 is 1.4-6 mm.

Further, this application provides an alternative embodiment, the thickness of the fin plate 203 is 0.2 mm, the inner diameter of the heat exchange tube 204 is 1.1 mm, the outer diameter of the heat exchange tube 204 is 1.6 mm, and the adjacent heat exchange tubes The distance between the tubes of 204 is 12 mm, and the distance between the fin plates 203 of two adjacent heat exchange assemblies 101 is 1.8 mm.

As shown in FIG. 2, the length direction of the heat exchange assembly 101 is substantially perpendicular to the length direction of the header 100.

In an embodiment provided by the present application, referring to the schematic diagrams of FIGS. 5 and 6, in the main heat exchange area 301, the heat exchange tube 204 is welded to the surface of the fin plate 203. By protruding the heat exchange tube 204 on the surface of the fin plate 203, the surface of the fin plate 203 forms an uneven structure. When the heat exchange air flows through the surface of the fin plate 203, the uneven structure can disturb the heat exchange air flow, thereby improving The heat exchange between the fin plate 203 and the heat exchange airflow and the heat exchange efficiency. At the same time, the heat exchange tube 204 is welded to the surface of the fin plate 203, which can also increase the heat exchange area of the air side flow channel.

In the same heat exchange assembly 101, at least one heat exchange tube 204 is protruded on the surface of the same side of the fin plate 203. Of course, the heat exchange tubes 204 can be arranged on the fin plate 203 in many ways. The heat exchange tubes 204 can be arranged on a single surface of the fin plate 203, or a fin plate 203 can include several areas. Such as the first area and the second area, in the first area, the heat exchange tube 204 is arranged on one surface of the fin plate 203, and in the second area, the heat exchange tube 204 is arranged on the opposite side of the fin plate 203. One surface. Of course, all the fin plates 203 can be divided into areas. In different areas, the heat exchange tubes 204 can be arranged on different surfaces of the fin plates 203. For example, for the first m fin plates 203, the heat exchange The tube 204 is provided on one surface of the corresponding fin plate 203. For the next n fin plates 203, the heat exchange tube 204 is provided on the other surface of the corresponding fin plate 203.

Optionally, among the two adjacent heat exchange assemblies 101, the heat exchange tubes 204 of one heat exchange assembly 101 and the heat exchange tubes 204 of the other heat exchange assembly 101 are located on different sides of the fin plate 203 where they are located. The advantage of this arrangement is that the heat exchange tubes of the two heat exchange assemblies 101 can be simultaneously arranged in the air flow channel formed by the gap between the two heat exchange assemblies 101, due to the misalignment of the heat exchange tubes of the two heat exchange assemblies 101 The arrangement helps to form a continuous tortuous flow path in the air flow channel, increases the heat transfer coefficient of the air flow channel, and improves the heat exchange effect in the flow channel. The air formed by the gap between the two heat exchange components 101 The cross-section of the flow channel is relatively uniform, or the heat exchange tubes of the two heat exchange components 101 can be kept away from the air flow channel formed by the gap between the two heat exchange components 101 at the same time. The heat exchange tube is provided with a relatively uniform flow cross section, which is beneficial to improve the uniformity of the air side flow channel, thereby improving the heat exchange performance of the heat exchanger.

Several fin plates 203 are arranged at intervals. Optionally, several fin plates 203 are arranged in parallel at equal intervals, so that the heat exchange airflow can pass uniformly and at the same time, the wind resistance of the heat exchange airflow through the several fin plates 203 is reduced. Or, the adjacent fin plates 203 may also be arranged at unequal intervals, which is not limited in the present invention.

As shown in Figure 5, on a plane perpendicular to the length of the heat exchange assembly 101, the cross section of the fin plate 203 is a continuous broken line shape, and the cross section of the heat exchange tube 204 is a rhombus shape. The crests and/or troughs of the shape have an angle that matches the rhombus shape. Based on the rhombus shape of the heat exchange tube 204, the two adjacent side walls 2043 are combined with the fin plate 203 so that the fin plate 203 exchanges heat with each other. The tube 204 forms a semi-enclosed arrangement.

The fin plate 203 is designed as a continuous broken line shape, and the area of the fin plate 203 in the width direction is larger, thereby increasing the heat exchange area between the fin plate 203 and the heat exchange airflow. An air flow vortex can be formed between the wave crests and wave troughs of the fin plates 203, so that the heat exchange airflow stays between the fin plates 203 for a longer time, thereby improving heat exchange efficiency.

Except for the broken-line cross section, as shown in FIG. 6, on a plane perpendicular to the length of the heat exchange assembly 101, the cross section of the fin plate 203 is a wave shape, and the cross section of the heat exchange tube 204 is a circle or an ellipse. 6 Take the circular heat exchange tube 204 for illustration.

The fin plate 203 includes a plurality of straight portions 2033 and a plurality of curved portions 2032. The curved portions 2032 are located between two adjacent straight portions 2033, and the curved portions 2032 form wave crests and troughs. Part of the outer surface of the heat exchange tube 204 is combined and fixed with the arc portion 2032 of the fin plate 203, wherein the curvature of the part where the heat exchange tube 204 is combined with the arc portion 2032 is the same in size and direction as the curvature of the arc portion 2032 .

4, the heat exchange tube 204 includes a tube body 2042 located at the periphery of its inner flow channel 2041. Several sub-plates 2031 of the fin plate 203 and the tube body 2042 are integrally formed by a casting process or an extrusion process.

The tube body 2042 of the heat exchange tube 204 and the several sub-plates 2032 of the fin plate 203 can be integrally formed through a pouring process or an extrusion process, which is equivalent to the inner runner 2041 of the heat exchange tube 204 being formed in the processing plate, and the processing plate A part of the fins forms the tube body 2042 of the heat exchange tube 204, and the parts of the processed fins on both sides of the heat exchange tube 204 form the sub-board 2032. An optional extrusion process, which uses a matched first mold and a second mold. The first mold is used to form the inner runner 2041 of the heat exchange tube 204, and the second mold has a shape that forms the rest of the heat exchange assembly 101. Cavity, two molds are used together, so that the heat exchange component 101 is extruded from the opening of the cavity of the second mold.

In a single heat exchange assembly 101, the ratio of the area of the outer surface of the heat exchange assembly 101 to the area of the sum of the inner surfaces of all the heat exchange tubes 204 is 5-45. When the flow cross section of the heat exchange tube 204 can be round, square, rectangular, polygonal isosceles trapezoid or special shape, the area of the heat exchange tube 204 is positively related to its inner diameter or equivalent inner diameter, and the inner diameter of the heat exchange tube affects the same volume. The speed of the refrigerant flowing through the heat exchange tube 204, the ratio of the area of the outer surface of the heat exchange assembly 101 to the sum of the inner surfaces of all the heat exchange tubes 204 is 5 to 45. The purpose of defining this range is in the heat exchange assembly 101 In the case of a certain external surface area, the internal surface area of the heat exchange tube should not be too large, that is, the tube diameter of the heat exchange tube should be as small as possible, and try to ensure that the refrigerant at the center of the flow section of the heat exchange tube 204 can also interact with the heat exchange tube 204. The tube body 2042 fully performs heat exchange to improve the heat exchange and heat exchange efficiency between the tube body 2042 of the heat exchange tube 204 and the refrigerant; at the same time, the wind resistance of the heat exchange tube 204 is reduced. Of course, the heat exchange tube 204 also needs to be ensured. The inner surface area of the heat exchange tube 204 should not be too small, and the tube diameter of the heat exchange tube 204 should be at least larger than the thickness of the fin plate 203, so that the heat exchange performance of the heat exchanger 10 can be improved on the premise of ensuring a small refrigerant charge. Further, the ratio of the area of the outer surface of the heat exchange assembly 101 to the area of the sum of the inner surfaces of all the heat exchange tubes 204 is 20-30.

The several heat exchange components 101 all have the same structure and shape, and one heat exchange component 101 of the two adjacent heat exchange components 101 is turned over by 180° relative to the other heat exchange component 101.

In an embodiment provided by the present application, two adjacent heat exchange assemblies 101 constitute a basic unit. In the basic unit, the second heat exchange assembly 101 is turned over 180 relative to the first heat exchange assembly 101. After °, it is arranged opposite to the first heat exchange assembly 101, and then a number of heat exchange assemblies 101 are arrayed with the basic unit. This arrangement realizes the staggered arrangement of the heat exchange tubes 204, which helps to reduce the pressure drop on the air side and at the same time helps to delay frost formation.

In a single heat exchange assembly 101, the number of heat exchange tubes 204 is greater than or equal to 2, and can be 3, 4, 5, etc., and several heat exchange tubes 204 are arranged at intervals in the width direction of the heat exchange assembly 101.

As shown in Figure 7, the fin plate 203 includes a body 400 and a number of bridges 401 protruding from the surface of the body 400. The projection of the bridges 401 on the surface of the body 400 has an elongated shape extending along the length of the heat exchange assembly 101. A bridge hole 402 is formed between the sheet 401 and the body 400, and the bridge hole 402 is used for passing the heat exchange airflow.

The shape of the bridge hole 402 of the bridge piece 401 may be an arch, a semicircle, a square, an isosceles trapezoid, and the like. When the heat exchange airflow passes through the fin plate 203, it can blow through the bridge hole 402. The top of the bridge 401 may abut against the fin plate 203 of the other heat exchange assembly 101 or may be spaced a certain distance apart. The provision of the bridge 401 can enhance the heat exchange and improve the heat exchange efficiency between the fin plate 203 and the air.

Referring to Fig. 8, Fig. 9, Fig. 10, and Fig. 12, the heat exchange assembly 101 includes two connection areas 302 located on both sides of the main heat exchange area 301 in its length direction. The dimension of the end of at least one of the two connection areas 302 in the width direction of the heat exchange assembly 101 is smaller than the dimension of the main heat exchange area 301 in the width direction of the heat exchange assembly 101. The tube body 201 of the collecting pipe 100 is provided with a plug-in part that matches with the end of the connecting area 302. At the plug-in part, the pipe body 201 of the collecting pipe 100 and the end of the connecting area 302 of the heat exchange assembly 101 are hermetically connected. The inner flow passage 2041 of the heat exchange tube 204 communicates with the inner cavities 202 of the two headers 100, and the inner flow passage 2041 of the heat exchange tube 204 and the inner cavity 202 of the header 100 form a part of the refrigerant flow passage.

Since the size of the end of at least one of the two connecting areas 302 in the width direction of the heat exchange assembly 101 is smaller than the size of the main heat exchange area 301 in the width direction of the heat exchange assembly 101, an optional way, In the connection area 302, the fin plate and the heat exchange tube 204 can be necked, for example, a part of the fin plate 203 is removed, and the heat exchange tube 204 is bent and gathered.

In an embodiment provided by the present application, in the length direction of the heat exchange assembly 101, the length of the heat exchange tube 204 is greater than the length of the fin plate 203, and the heat exchange tube 204 extends beyond the length of the heat exchange assembly 101 on both sides. The fin plate 203. The part of the heat exchange tube 204 located in the main heat exchange area 301 forms a main body section 501. In each connection area 302 of the heat exchange assembly 101, the heat exchange tube 204 includes an installation section 503 and a matching section 502. The end of the connecting area 302 forms a mounting section 503 for mating with the header 100, and the mounting section 503 is located on the outer surface of the header 100 close to the inner cavity 202 of the header. The mating section 502 is connected between the installation section 503 and the main body section 501. In other words, the heat exchange tube 204 includes a main body section 501, two installation sections 503, and two mating sections 502. The two ends of the heat exchange tube 204 in the length direction respectively form two installation sections 503, and the two mating sections 502 are respectively located at On both sides of the main body section 501 in the length direction, the mating section 502 is connected between the installation section 503 and the main body section 501.

10, the plurality of heat exchange tubes 204 of the heat exchange assembly 101 includes at least one first heat exchange tube 204'. The mating section 502 of the first heat exchange tube 204' is bent relative to its main body section 501, and the heat exchange tube 204 The mounting section 503 and the main body section 501 may have substantially the same extending direction, and the mounting sections 503 of the plurality of heat exchange tubes 204 are arranged together in the width direction of the heat exchange assembly 101 compared to the main body section 501.

This application provides an alternative embodiment for the preparation of this kind of heat exchange assembly. The heat exchange tube 204 and the fin plate 203 of the preliminary processed heat exchange assembly can have the same length, and the heat exchange assembly 101 can be used in the second processing step. A part of the fin plate 203 is cut off at the position near the end while the heat exchange tube 204 is retained. The remaining heat exchange tubes 204 are bent, so that the mounting section 503 of the heat exchange tube 204 exchanges heat compared to the main section 501. The components 101 are arranged together in the width direction. Of course, the heat exchange assembly 101 can also be obtained without cutting the fin plate 203, such as performing integrated processing on the heat exchange assembly 101.

The mounting sections 503 of the several heat exchange tubes 204 can be gathered into one or more rows in the width direction of the heat exchange assembly 101. In the case of multiple rows, that is, the mounting sections 503 of the several heat exchange tubes 204 can be arranged more than before being gathered. The heat exchange assembly 101 spreads in the length direction.

In the length direction of the heat exchange assembly 101, the length of the main body section 501 is greater than or equal to the length of the fin plate 203. The mating section 502 and the mounting section 503 extend beyond the fin plate 203 in the length direction of the heat exchange assembly 101.

The header 100 is a cylindrical tube with a substantially circular cross-section. The outer diameter of the header 100 is less than or equal to the distance between the main sections 501 of the two heat exchange tubes 204 furthest apart in the heat exchange assembly 101.

The tube body 201 of the header 100 is provided with a plug-in part, and at the plug-in part, the tube body 201 of the header 100 and the mounting section 503 of the heat exchange tube 204 are hermetically connected. The collecting tube 100 and the fin plate 203 are spaced apart or abutted against each other, or the tube body 201 of the collecting tube 100 and the fin plate 203 are fixedly connected.

Referring to FIG. 11, the plug-in portion includes a plurality of plug-in holes 205, and the plug-in holes 205 penetrate through the pipe body 201 of the collecting pipe 100. The size of the plug hole 205 is adapted to the end of the heat exchange tube 204, and a number of plug holes 205 are spaced apart on the tube body 201 of the header 100, and the mounting sections 503 of the heat exchange tubes 204 are correspondingly spaced. The installation section 503 of the heat exchange tube 204 is inserted into the collecting pipe 100 through the insertion hole 205. At the insertion hole 205, the pipe body 201 of the collecting pipe 100 and the pipe body 2042 of the heat exchange pipe 204 are connected in a sealed manner. The number of the insertion holes 205 matches the number of the heat exchange tubes 204, in a one-to-one correspondence relationship.

The plurality of plug holes 205 are distributed in multiple rows along the length direction of the header 100. The rows of plug holes 205 of the header 100 are alternately staggered. On a plane perpendicular to the length direction of the heat exchange assembly 101, the projection of the center line of each row of insertion holes is approximately perpendicular to the length direction of the header 100, and a number of heat exchange tubes 204 of one heat exchange assembly 101 correspond to at least one row The insertion holes 205 are provided, and the number of the heat exchange tubes 204 of the heat exchange assembly 101 matches the number of the corresponding at least one row of insertion holes 205.

In a single heat exchange assembly 101, the axes of the mounting sections 503 of the heat exchange tubes 204 are all located on the same plane, the mounting sections 503 of the heat exchange tubes 204 are arranged in parallel, and the heat exchange tubes 204 are arranged corresponding to a row of insertion holes 205.

As shown in Figures 10 and 12, the plurality of heat exchange tubes 204 include a first heat exchange tube 204' and a second heat exchange tube 204". The main body section 501, the mating section 502, and the installation section 503 of the second heat exchange tube 204" The longitudinal direction of the second heat exchange tube 204" is substantially parallel to the longitudinal direction of the heat exchange assembly 101.

The main section 501, the mating section 502, and the installation section 503 of the first heat exchange tube 204' are approximately straight pipes. The length direction of the main section 501 and the installation section 503 of the first heat exchange tube 204' is approximately the same as the length direction of the heat exchange assembly 101. In parallel, the mating section 502 of the first heat exchange tube 204' is inclined from the end of the main body section 501 close to the collecting tube 100 toward the second heat exchange tube 204".

The number of first heat exchange tubes 204' is greater than or equal to 2, the number of second heat exchange tubes 204" is greater than or equal to 1, and the first heat exchange tubes 204' are closer to the width direction of the heat exchange assembly 101 than the second heat exchange tubes 204" At the edge, a plurality of first heat exchange tubes 204' are distributed on both sides of the second heat exchange tube 204" in the width direction of the heat exchange assembly 101.

In an example, the number of first heat exchange tubes 204' is 4, and the number of second heat exchange tubes 204" is 1, then in the width direction of the heat exchange assembly 101, two of the second heat exchange tubes 204" There can be two first heat exchange tubes 204' on each side, or one first heat exchange tube 204' on one side of the second heat exchange tube 204" and three first heat exchange tubes 204' on the other side. For example, the number of the first heat exchange tube 204' is 4, and the number of the second heat exchange tube 204" is 2, then the 2 second heat exchange tubes 204" are located in the middle of the heat exchange assembly 101 in the width direction. Position, the 2 second heat exchange tubes 204" are used as a unit, and the 4 first heat exchange tubes 204' are arranged on both sides of the unit, and the respective numbers of the first heat exchange tubes 204' on both sides can be omitted Too many restrictions.

In this embodiment, the heat exchange assembly 101 includes three heat exchange tubes 204 as an example, as shown in FIG. 10 and FIG. 12, that is, one second heat exchange tube 204" and two first heat exchange tubes 204', the heat exchange The mating parts 502 of the first heat exchange tube 204' on both sides of the component 101 in the width direction are bent to gather the second heat exchange tube 204". When the heat exchange component 101 is connected to the header 100, only the heat exchange tube 204 Insert the header 100.

Referring to FIG. 10, a certain gap may be left between the gathered heat exchange tubes 204, and a single heat exchange tube 204 is inserted into the insertion hole 205 of the header 100 respectively.

Or, referring to FIG. 12, there is no gap or small gap between the installation sections 503 of the heat exchange tubes 204 after being gathered. For example, the installation sections 503 of several heat exchange tubes 204 are in close contact with each other in turn, and the installation of several heat exchange tubes 204 The section 503 may be welded in sequence to form an integral structure, which is inserted into the collecting pipe 100 as a whole. Correspondingly, referring to the partial structural diagram of the header 100 in FIG. 13, the plug-in portion includes a mounting groove 207 adapted to the mounting section 503 of a plurality of heat exchange tubes 204, and the mounting sections 503 of the plurality of heat exchange tubes 204 are installed The groove 207 is inserted into the header 100 as a whole, and at the installation groove 207, the tube body 201 of the header 100 and the tube body 2042 of the heat exchange tube 204 are hermetically connected.

The installation grooves 207 are also distributed in multiple rows along the length of the collecting pipe 100, and the two adjacent installation grooves 207 are arranged in a staggered manner. At the same time, the installation grooves 207 may have an elongated shape in the direction perpendicular to the length of the collecting pipe 100, such as a rectangle. , An oblong shape, etc., the shape of the mounting groove 207 can be adapted to the outer contour of the mounting section 503 of the plurality of heat exchange tubes 204 gathered into an integrated structure.

The mounting sections 503 of the heat exchange tubes 204 are arranged together in the width direction of the heat exchange assembly 101 compared to the main body section 501. In this way, when the mounting section 503 of the heat exchange tube 204 is connected and combined with the header 100, it is beneficial to reduce The size of the header 100 in the width direction of the heat exchange assembly 101, thereby helping to reduce the size of the header 100 as a whole, reducing the thermal resistance effect caused by the wall thickness of the header 100, thereby improving the heat exchange performance of the heat exchanger At the same time, the relatively small welding size can also reduce the difficulty of welding, further reduce the risk of leakage, and improve the stability of the heat exchanger.

The present application also provides a heat exchanger 10, which includes a plurality of headers 100 and a plurality of heat exchange components 101.

The collecting pipe 100 includes a longitudinally long pipe body 201 and a collecting pipe inner cavity 202. The length directions of the plurality of headers 100 are approximately parallel. In the length direction of the header 100, the plurality of heat exchange components 101 are arranged at intervals, and the gap between adjacent heat exchange components 101 forms an air-side flow channel.

The heat exchange assembly 101 includes a fin plate 203 and a number of heat exchange tubes 204, and the heat exchange assembly 101 includes a main heat exchange area 301. In the main heat exchange zone 301, a number of heat exchange tubes 204 are distributed at intervals in the width direction of the heat exchange assembly 101, wherein the heat exchange tubes 204 are fixedly connected to the surface of the fin plate 203, or the fin plate 203 includes several sub-plates 2031 , The heat exchange tube 204 is connected between two adjacent sub-boards 2031. For each heat exchange assembly 101, in the length direction of the heat exchange assembly 101, the length of the heat exchange tube 204 is greater than the length of the fin plate 203, and both ends of the length direction of the heat exchange tube 204 extend beyond the fin plate 203.

The plurality of heat exchange tubes 204 of the heat exchange assembly 101 are divided into at least two groups along the width direction of the heat exchange assembly 101, the number of heat exchange tubes 204 in each group is at least one, and each group of heat exchange tubes 204 is connected to two headers 100 between.

For two adjacent groups of heat exchange tubes 204, in the length direction of the heat exchange tubes 204, the inner flow channels 2041 of the two groups of heat exchange tubes 204 are connected to two different collectors on one side. The inner cavity 202 of the tube 100 is in communication. The inner flow passages 2041 of the heat exchange tubes 204 of the two groups are in communication with the inner cavity 202 of the same header 100 on the other side, or the inner cavities of the heat exchange tubes 204 of the two groups are connected with two on the other side. The inner cavities 202 of two different headers 100 are respectively connected, and the inner cavities 202 of the two headers 100 on the other side are connected, so that the refrigerant flows in the inner flow passages 2041 of the heat exchange tubes 204 of the two groups. In the opposite direction.

In the transverse direction of the heat exchange assembly 100, the heat exchanger 10 has at least two refrigerant flow backhauls formed by a plurality of heat exchange assemblies 101 and a plurality of headers 100. In the main heat exchange area 301 corresponding to the plurality of heat exchange assemblies 101, the heat exchange tubes 204 of the plurality of heat exchange assemblies 101 are alternately staggered in the length direction of the header 100 with the heat exchange assembly 101 as a unit.

The tube body 201 of each header 100 is provided with plug holes 205, a number of plug holes 205 are arranged at intervals, the plurality of plug holes 205 have multiple rows in the length direction of the header 100, and the number of plug holes 205 in each row Matching with the number of heat exchange tubes 204 connected to the header 100 in a single heat exchange assembly 101, the multiple rows of plug holes 205 are alternately and staggered along the length of the header 100. The size of the plug holes 205 and the heat exchange The size of the tube 204 is adapted. In the insertion hole 205, the tube body 201 of the header 100 and the tube body 2042 of the heat exchange tube 204 are hermetically connected.

As shown in Figure 14, the plurality of heat exchange tubes 204 are all straight tubes extending in the length direction of the heat exchange assembly 101, and the plurality of headers 100 include a first header 1001, a second header 1002, and a third header. The tube 1003 and the fourth header 1004, the first header 1001 and the third header 1003 are arranged side by side, and the second header 1002 and the fourth header 1004 are arranged side by side.

The first header 1001 and the second header 1002 are arranged opposite to each other in the length direction of the heat exchange assembly 101. The third header 1003 and the fourth header 1004 are arranged opposite to each other in the length direction of the heat exchange assembly 101.

The heat exchanger 10 has two refrigerant flow returns in the width direction of the heat exchange assembly 101, and each refrigerant flow return includes at least one heat exchange tube 204 of each heat exchange assembly 101. There are two headers 100 in a group, and each refrigerant flow backhaul includes a group of headers 100. The two headers 100 of the group are respectively located at the length of the heat exchange tube 204 corresponding to the refrigerant flow backhaul. Both sides of the direction.

Therefore, by arranging the heat exchange tube 204 and the header 100 matching the refrigerant flow backhaul, several refrigerant flow backhauls of the heat exchanger can be realized, which is beneficial to extend the length of the refrigerant flow path, thereby improving the heat exchange of the heat exchanger performance.

Referring to FIG. 15, the second header 1002 and the fourth header 1004 abut against each other, and the tube bodies 201 of the second header 1002 and the fourth header 1004 are both provided with a first communication hole 208, and the second header The first communication hole 208 of the tube 1002 is aligned with the first communication hole 208 of the fourth header 1004, so that the inner cavity 202 of the second header 1002 and the inner cavity 202 of the fourth header 1004 are between both The position where the pipe body 201 abuts is communicated with the first communicating hole 208.

In order to ensure the connection stability of the second header 1002 and the fourth header 1004, an alternative way is, referring to FIG. 15, the heat exchanger 10 includes a first connecting body 209, and the first connecting body 209 is at least partially Located between the second header 1002 and the fourth header 1004, the shape of the first connecting body 209 is roughly triangular prism, two of its three sides are recessed to form an arc-shaped concave surface, and the two arcs The shape of the concave surface corresponds to the shape of a part of the second header 1002 and the fourth header 1004, respectively. Part of the surface of the second header 1002 and the fourth header 1004 corresponds to at least the arc-shaped concave surface. Part of the surface welded connection. Among them, the welding method may be brazing.

Further, the first connecting body 209 is provided with a second communication hole 210 penetrating through two concave surfaces. The tube body 201 of the second header 1002 and the tube body 201 of the fourth header 1004 are both provided with a third communication hole 211. The two sides of the second communication hole 210 are respectively aligned with the third communication hole 211 of the second header 1002 and the third communication hole 211 of the fourth header 1004, and the tube body 201 of the second header 1002 is located The position where the third communication hole 211 is opened is separated from the tube body 201 of the fourth header 1004 at the position where the third communication hole 211 is opened. The third communication hole 211 of the second header 1002 is separated from the fourth collector. The third communication hole 211 of the flow tube 1004 is communicated through the second communication hole 210 so that the inner cavity 202 of the second header 1002 is communicated with the inner cavity 202 of the fourth header 1004.

As shown in FIG. 16, in another optional manner, the heat exchanger 10 includes a second connecting body 212, the second connecting body 212 is provided with a fourth communication hole 213, a second header 1002 and a fourth header The tube 1004 is provided with a fifth communication hole 214 corresponding to the fourth communication hole 213. The second connecting body 212 is welded between the second header 1002 and the fourth header 1004. The second connecting body 212 may be a long strip. Plate shape, the side of the second connecting body 212 facing the second header 1002 is an arc-shaped inner concave surface matched with the tube body of the second header 1002, and the side of the second connecting body 212 facing the second header 1002 is a and The arc-shaped inner concave surface of the fourth header 1004 is matched with the tube body, and the two sides of the fourth communication hole 213 are respectively connected with the fifth communication hole 214 of the second header 1002 and the fifth communication hole 214 of the fourth header 1004 Aligned and arranged, the inner cavity 202 of the second header 1002 and the inner cavity 202 of the fourth header 1004 are communicated through respective fifth communication holes 214 and fourth circulation holes 213.

Referring to FIG. 17, the present application also provides a method without first connecting body 209 or second connecting body 212. In the heat exchanger 10 provided in this application, several headers 100 include a first header 1001 and a second header. The second header 1002 and the third header 1003, the first header 1001 and the third header 1003 are arranged side by side, the first header 1001 and the third header 1003 are located in the length direction of the heat exchange assembly 101 The second header 1002 is located on the other side of the heat exchange assembly 101 in the length direction.

The multiple sets of heat exchange tubes 204 include a first set of heat exchange tubes S1 and a second set of heat exchange tubes S2 that are adjacent in the width direction of the heat exchange assembly 101. The first set of heat exchange tubes S1 are connected to the first header 1001 and Between the second headers 1002, the second group of heat exchange tubes S2 are connected between the third header 1003 and the second header 1002. The number of heat exchange tubes S1 in the first group and the number of heat exchange tubes S2 in the second group are both greater than or equal to 1. The number of heat exchange tubes S1 in the first group and the number of heat exchange tubes S2 in the second group can be the same or different. In the embodiment provided in this application, the number of heat exchange tubes S1 in the first group is two, and the number of heat exchange tubes S2 in the second group is one.

Each heat exchange tube 204 of the first group of heat exchange tubes S1 has a first end 11 connected to the first header 1001 and a second end 12 connected to the second header 1002. The second group of heat exchange tubes Each heat exchange tube 204 of the tube S2 has a third end 13 connected to the third header 1003 and a fourth end 14 connected to the second header 1002, wherein the second end 12 and the fourth The ends 14 are converged in the width direction of the heat exchange assembly 101 than between the first end 11 and the third end 13.

The second end 12 and the fourth end 14 that are gathered together can be inserted into the second collecting pipe 1002 as a whole, or welded into an integrated structure and then inserted into the second collecting pipe 1002 as a whole, of course. Inserted into the second header 1002 respectively, this application does not make too many restrictions on this.

As shown in Fig. 18, three refrigerant flows are shown in the figure for a return stroke. At least two refrigerant flow backhauls are connected in series to form a part of the refrigerant flow channel, and the refrigerant flow directions of the two adjacent refrigerant flow backhauls are opposite. Of course, the refrigerant flow path may also include more flow path backhauls, such as four backhauls, five backhauls, etc. This application does not make too many restrictions on this.

Three, that is, more than three refrigerant flow backhauls are superimposed on the basis of two refrigerant flow backhauls, as shown in Figure 19. For example, in the case of three backhauls, a fifth header is added to the two backhauls. 1005 and sixth header 1006, first header 1001, third header 1003, fifth header 1005 are arranged side by side, second header 1002, fourth header 1004, sixth header The tubes 1006 are arranged side by side, and the inner cavity 202 of the third header 1003 is communicated with the inner cavity 202 of the fifth header 1005. In this way, the three refrigerant flow passages have flow directions similar to a serpentine twist. Similarly, a first connecting body 209 or a second connecting body 212 can also be provided between the third header 1003 and the fifth header. The function of the first connecting body 209 or the second connecting body 212 has been performed before. Detailed elaboration, I will not repeat it here.

In the above embodiment, the plurality of collecting tubes 100 may be cylindrical tubes with a perfect circular cross section, and the tube diameters of the plurality of collecting tubes 100 are all the same.

Similarly, referring to Figures 4 and 5, in the heat exchanger 10 where at least two refrigerants flow back, on a plane perpendicular to the length of the heat exchange assembly 101, the cross section of the fin plate 203 is a continuous broken line shape or Wave shape, the cross-sectional shape of the heat exchange tube 204 is adapted to the crests or troughs of the broken line shape or the wave shape. Part of the outer surface of the heat exchange tube 204 is welded and fixed to the crests or troughs of the fold-line shape or wave shape, so that the fin plates 203 partially surround the heat exchange tube 204 at the crests or troughs of the fold-line shape or wave shape.

The above are only the preferred embodiments of the application, and do not limit the application in any form. Although the application has been disclosed as the preferred embodiments, it is not intended to limit the application. Anyone familiar with the professional technology Personnel, without departing from the scope of the technical solution of the present application, when the technical content disclosed above can be used to make slight changes or modification into equivalent embodiments with equivalent changes, but any content that does not deviate from the technical solution of the present application is based on this Any simple amendments, equivalent changes and modifications made to the above embodiments by the technical essence of the application still fall within the scope of the technical solutions of the application.

Claims (20)

A heat exchanger (10), including two headers (100) and a number of heat exchange components (101); The header (100) includes a tube body (201) and an inner cavity (202) located in the tube body (201); The plurality of heat exchange components (101) are arranged along the length direction of the header (100); there is a gap for air circulation between two adjacent heat exchange components (101); the heat exchange component (101) It includes a fin plate (203) and at least one heat exchange tube (204); the heat exchange assembly (101) includes a main heat exchange area (301). In the main heat exchange area (301), the heat exchange The tube (204) is connected with the fin plate (203); The heat exchange tube (204) is provided with an inner flow passage (2041) connecting the inner cavities (202) of the two headers (100), the inner flow passage (2041) of the heat exchange tube (204), and The inner cavities (202) of the two headers (100) form a part of the refrigerant flow channel; in the main heat exchange area (301) corresponding to the two adjacent heat exchange assemblies (101), at least one set The two adjacent heat exchange tubes (204) are misaligned along the arrangement direction of the heat exchange assembly (101), and the two adjacent heat exchange tubes (204) respectively belong to the adjacent two One heat exchange assembly (101), and for one of the heat exchange tubes (204), the other heat exchange tube (204) is the distance between the heat exchange assembly (101) and the one heat exchange tube (204) The nearest heat exchange tube. The heat exchanger (10) according to claim 1, wherein, in the length direction of the heat exchange assembly (101), the length of the heat exchange tube (204) is greater than the length of the fin plate (203) , Both ends of the heat exchange tube (204) extend beyond the fin plate (203) in the length direction of the heat exchange assembly (101); the heat exchange tube (204) extends beyond the fin plate At least part of (203) is fixedly connected with the tube body (201) of the header (100); between the tube body (201) of the header (100) and the fin plate (203) there is Or the tube body (201) of the collecting tube (100) is in contact with the fin plate (203). The heat exchanger (10) according to claim 1, wherein, in the main heat exchange area (301), the heat exchange tube (204) is welded to the surface of the fin plate (203); In the same heat exchange assembly (101), several heat exchange tubes (204) all protrude from the surface of the fin plate (203) on the same side; among the two adjacent heat exchange assemblies (101), one exchanges The heat exchange tube (204) of the heat exchange assembly (101) and the heat exchange tube (204) of another heat exchange assembly (101) are located on different sides of the fin plate (203) where they are located. The heat exchanger (10) according to claim 2 or 3, wherein the cross section of the fin plate (203) perpendicular to the length direction of the heat exchange assembly (101) is a continuous broken line shape, and the heat exchanger The cross section of the heat pipe (204) is a rhombus shape; the fin plate (203) has an included angle that matches the rhombus shape of the heat exchange tube (204) at the bending position of the fin plate (203). The heat exchange tube (204) is fixed to the fin plate (203) on the basis of its diamond shape and two adjacent side walls respectively, so that the fin plate (203) forms a semi-enclosed heat exchange tube (204) Set up. The heat exchanger (10) according to claim 2 or 3, wherein the cross section of the fin plate (203) perpendicular to the length direction of the heat exchange assembly (101) has a wave shape; the heat exchange tube ( The cross section of 204) is circular or elliptical; the fin plate (203) includes a number of straight portions (2033) and a number of arc portions (2032), and the arc portions (2032) are located at two adjacent Between the straight portions (2033), the arc portions (2032) form the wave crests and troughs; part of the outer surface of the heat exchange tube (204) and the arc of the fin plate (203) The portion (2032) is fixed to each other, wherein the curvature of the fixed portion of the heat exchange tube (203) and the arc portion (2032) is the same as the magnitude and direction of the curvature of the corresponding arc portion (2032) . The heat exchanger (10) according to claim 1, wherein the fin plate (203) includes a plurality of sub-plates (2031), and the heat exchange tube (204) is connected to two adjacent sub-plates ( 2031); the heat exchange tube (204) includes a tube body (2042) located at the periphery of its inner cavity, a number of sub-plates (2031) of the fin plate (203) and the heat exchange tube (204) The tube body (2042) is integrally formed by a pouring process or integrally formed by an extrusion process. The heat exchanger (10) according to any one of claims 1 to 6, wherein the plurality of heat exchange components (101) all have the same structure and shape, and the two adjacent heat exchange components (101) One heat exchange component (101) is turned 180° relative to the other heat exchange component (101); in a single heat exchange component (101), the area of the outer surface of the heat exchange component (101) and all the heat exchange tubes ( The ratio of the area of the sum of the inner surfaces of 204) is 5-45. The heat exchanger (10) according to any one of claims 1 to 7, wherein the fin plate (203) includes a body (400) and a plurality of bridges (401) protruding from the body (400) ), a bridge hole (402) is formed between the bridge piece (401) and the body (400), and the bridge hole (402) is used to allow air to pass through. The heat exchanger (10) according to claim 1, wherein the heat exchange assembly (101) comprises a plurality of heat exchange tubes (204), and the plurality of heat exchange tubes (204) extend along the heat exchange assembly (101) Width direction distribution; The heat exchange assembly (101) also includes two connection areas (302) located on both sides of the main heat exchange area (301) in its length direction; at least one connection area of the two connection areas (302) The size of the end of (302) in the width direction of the heat exchange assembly (101) is smaller than the size of the main heat exchange area (301) in the width direction of the heat exchange assembly (101). The heat exchanger (10) according to claim 9, wherein the heat exchange tube (204) comprises a main section (501) located in the main heat exchange zone (301); in the heat exchange assembly (101) ) Each connection area (302), the heat exchange tube (204) further includes an installation section (503) and a matching section (502); the matching section (502) is located between the header (100) and the fin Between the plates (203); the installation section (503) is located on the side of the outer surface of the header (100) close to its inner cavity (202); The mounting sections (503) of the plurality of heat exchange tubes (204) are arranged together in the width direction of the heat exchange assembly (101) compared to the main body section (501). The heat exchanger (10) according to claim 10, wherein the header (204) comprises a mounting groove (207), and the mounting groove (207) is gathered with the plurality of heat exchange tubes (204) The size of the mounting section (503) of the heat exchange tubes (204) is adapted to fit and contact each other one by one, and the mounting sections (503) of the heat exchange tubes (204) are at least partially housed in the The installation groove (207), and at the installation groove (207), the tube body (201) of the header (100) and the tube body (2042) of the heat exchange tube (204) are hermetically connected. A heat exchanger (10), which includes a plurality of headers (100) and a plurality of heat exchange components (101); The header (100) includes a tube body (201) and an inner cavity (202); the plurality of heat exchange components (101) are arranged along the length of the header (100); two adjacent heat exchange components ( 101) There is a gap for air circulation between them; The heat exchange assembly (101) includes a fin plate (203) and a number of heat exchange tubes (204), and the heat exchange assembly (101) includes a main heat exchange zone (301); in the main heat exchange zone (301) ), the plurality of heat exchange tubes (204) are distributed along the width direction of the heat exchange assembly (101), and the heat exchange tubes (204) are connected to the fin plate (203); The plurality of heat exchange tubes (204) of the heat exchange assembly (101) are divided into at least two groups along the width direction of the heat exchange assembly (101), and the number of heat exchange tubes (204) in each group is at least one, each The heat exchange tubes (204) are all connected between the two headers (100); For the two adjacent groups of heat exchange tubes (204), in the length direction of the heat exchange tubes (204), the inner runners (2041) of the two groups of heat exchange tubes (204) are connected to two The inner cavities of two different headers (100) are connected; the inner flow passages (2041) of the two sets of heat exchange tubes (204) are connected to the inner cavities of the same header (100) on the other side, or The inner flow passages (2041) of the two sets of heat exchange tubes (204) are respectively connected to the inner cavities of two different headers (100) on the other side, and the two headers (100) on the other side The inner cavities (202) of the two groups are connected, so that the refrigerant flows in opposite directions in the inner flow passages (2041) of the two sets of heat exchange tubes (204). The heat exchanger (10) according to claim 12, wherein, for each heat exchange component (101), in the length direction of the heat exchange component (101), the heat exchange tube (204) The length of is greater than the length of the fin plate (203), and both ends of the heat exchange tube (204) in the length direction extend beyond the fin plate (203); The tube body (201) of each header (100) is provided with a number of plug holes (205), and the plurality of plug holes (205) have multiple rows in the length direction of the header (100), and each row The number of plug holes (205) matches the number of heat exchange tubes (204) connected to the header (100) in the heat exchange assembly (101), and multiple rows of plug holes (205) are along the header The length direction of (100) is alternately staggered; at the insertion hole (205), the tube body (201) of the header (100) and the tube body (2042) of the heat exchange tube (204) ) Sealed connection. The heat exchanger (10) according to claim 12 or 13, wherein the plurality of headers (100) include a first header (1001), a second header (1002), and a third header Tube (1003) and a fourth header (1004), the first header (1001) and the third header (1003) are arranged side by side, the second header (1002) and the second header Four headers (1004) are arranged side by side; The first header (1001) and the second header (1002) are arranged oppositely in the length direction of the heat exchange assembly (101); the third header (1003) and the The fourth header (1004) is arranged oppositely in the length direction of the heat exchange assembly (101); The plurality of heat exchange tubes (204) include a first group of heat exchange tubes (S1) and a second group of heat exchange tubes (S2) that are adjacent in the width direction of the heat exchange assembly (101). The group of heat exchange tubes (S1) is connected between the first header (1001) and the second header (1002), and the second group of heat exchange tubes (S2) is connected to the third Between the header (1003) and the fourth header (1004). The heat exchanger (10) according to claim 14, wherein the tube bodies of the second header (1002) and the fourth header (1002) are both provided with a first communication hole (208) , The first communication hole (208) of the second header (1002) is aligned with the first communication hole (208) of the fourth header (1004), and the second header ( The first communication hole (208) of 1002) communicates with the first communication hole (208) of the fourth header (1004). The heat exchanger (10) according to claim 15, wherein the heat exchanger (10) comprises a first connecting body (209), and the first connecting body (209) is at least partially located in the second set Between the flow tube (1002) and the fourth header (1004), the first connecting body (209) has two arc-shaped concave surfaces, and the two arc-shaped concave surfaces are connected to the first Part of the surface of the second header (1002) and the fourth header (1004) fits in shape, and part of the surface of the second header (1002) and the fourth header (1004) matches At least part of the arc-shaped concave surface is welded and connected. The heat exchanger (10) according to claim 16, wherein the first connecting body (209) is provided with a second communicating hole (210) penetrating the two arc-shaped concave surfaces; the second collector The tube (1002) and the tube body of the fourth header (1004) are both provided with a third communicating hole (211); both sides of the second communicating hole (210) are connected to the second collector The third communication hole (211) of the tube (1002) and the third communication hole (211) of the fourth header (1004) are aligned, and the tube body of the second header (1002) is opened The position of the third communication hole (211) is separated from the tube body of the fourth header (1004) at the position where the third communication hole (211) is opened, and the second header (1002) The third communication hole (211) of the fourth header (1004) communicates with the third communication hole (211) of the fourth header (1004) through the second communication hole (210), so that the second header (1002) The inner cavity of) is communicated with the inner cavity of the fourth header (1004). The heat exchanger (10) according to claim 14, wherein the heat exchanger (10) comprises a second connecting body (212), and the second connecting body (212) is welded to the second current collector Between the tube (1002) and the fourth header (1004), the second connecting body (212) is provided with a fourth communication hole (213), and the second header (1002) and the The fourth collecting pipe (1004) is provided with a fifth communicating hole (214) opposite to at least a part of the fourth communicating hole (213), and the fourth communicating hole (213) is connected to the second collecting pipe The fifth communication hole (214) of (1002) and the fifth communication hole (214) of the fourth header (1004) make the inner cavity of the second header (1002) and the fourth The inner cavity of the collecting pipe (1004) is communicated. The heat exchanger (10) according to claim 12 or 13, wherein the plurality of headers (100) include a first header (1001), a second header (1002) and a third header Tube (1003), the first header (1001) and the third header (1003) are arranged side by side, the first header (1001) and the third header (1003) Located on one side in the length direction of the heat exchange assembly (101), and the second header (1002) is located on the other side in the length direction of the heat exchange assembly (101); The plurality of heat exchange tubes (204) include a first group of heat exchange tubes (S1) and a second group of heat exchange tubes (S2) that are adjacent in the width direction of the heat exchange assembly (101). The group of heat exchange tubes (S1) is connected between the first header (1001) and the second header (1002), and the second group of heat exchange tubes (S2) is connected to the third Between the header (1003) and the second header (1002); the first group of heat exchange tubes (S1) has a first end (1001) connected to the first header (1001) 11) and a second end (12) connected to the second header (1002), the second group of heat exchange tubes (S2) has a second end (12) connected to the third header (1003) Three ends (13) and a fourth end (14) connected to the second header (1002), wherein the second end (12) and the fourth end (14) are In contrast, the first end (11) and the third end (13) are gathered together in the width direction of the heat exchange assembly (101). A heat exchanger (10), including two headers (100) and a number of heat exchange components (101); The header (100) includes a tube body (201) and an inner cavity (202) located in the tube body (201); The plurality of heat exchange components (101) are arranged along the length direction of the header (100); there is a gap for air circulation between two adjacent heat exchange components (101); the heat exchange components (101) include fins Plate (203) and a number of heat exchange tubes (204); the heat exchange assembly (101) includes a main heat exchange area (301), in the main heat exchange area (301), the multiple heat exchange tubes ( 204) is distributed along the width direction of the heat exchange assembly (101), and the heat exchange tube (204) is connected with the fin plate (203); the heat exchange tube (204) is provided with the two current collectors The inner flow channel (2041) of the inner cavity (202) of the tube (100), the inner flow channel (2041) of the heat exchange tube (204) and the inner cavity (202) of the two headers (100) form Part of the refrigerant flow path; The heat exchange assembly (101) also includes two connection areas (302) located on both sides of the main heat exchange area (301) in its length direction; at least one connection area of the two connection areas (302) The size of the end of (302) in the width direction of the heat exchange assembly (101) is smaller than the size of the main heat exchange area (301) in the width direction of the heat exchange assembly (101); the tube of the header (100) The body (201) is hermetically connected with the end of the connection area (302) of the heat exchange assembly (101).

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