CN218034624U - End cover and heat exchanger with same - Google Patents

Abstract

The application discloses end cover and heat exchanger that has it, the end cover includes lid and first lateral wall, first lateral wall with the lid links to each other, just first lateral wall surrounds the circumference setting of lid, first lateral wall includes first recess and first arch, first arch is close to first recess setting, first arch is in projection on the lid place plane surpasss the periphery wall of first lateral wall. The end cover for the heat exchanger is more convenient to assemble, stress is reduced, and reliability of the heat exchanger is improved.

Description

End cover and heat exchanger with same

Technical Field

The application relates to the technical field of heat exchangers, in particular to an end cover and a heat exchanger with the same.

Background

The heat exchanger generally comprises a collecting pipe and a heat exchange pipe, wherein the collecting pipe is used for collecting refrigeration media, an end cover is arranged at the end part of the collecting pipe, and the end cover is used for sealing and plugging a port of the collecting pipe. In the related art, the collecting pipe and the end cover are in transition fit, and the mode causes unreliable assembly of the collecting pipe and the end cover and influences the reliability of the heat exchanger.

SUMMERY OF THE UTILITY MODEL

Therefore, the end cover and the heat exchanger with the same are provided, the end cover is more convenient to assemble, stress is reduced, and reliability of the heat exchanger is improved.

According to the application, including lid and first lateral wall, first lateral wall with the lid links to each other, just first lateral wall encloses the circumference setting of lid, first lateral wall includes first recess and first arch, first arch is close to first recess setting, first arch is in projection on the lid place plane surpasss the periphery wall of first lateral wall.

In some embodiments, the first groove penetrates the first sidewall in a thickness direction of the first sidewall.

In some embodiments, the first groove is located at an end of the cover body away from the cover body in a thickness direction of the cover body.

In some embodiments, the first protrusion is a protrusion formed by a portion of the first sidewall extending outward at the first groove.

In some embodiments, the projection of the first protrusion on the plane of the cover body is gradually increased along the direction toward the first groove.

In some embodiments, the first groove is a plurality of grooves, a plurality of the first grooves are arranged at intervals along the circumference of the first sidewall, the first protrusion is a plurality of the first protrusions are arranged at intervals along the circumference of the first sidewall, and one first groove is located between two adjacent first protrusions.

In some embodiments, the first protrusion extends along a thickness direction of the cover body, and a distance of the first protrusion beyond the first sidewall peripheral wall gradually decreases in an extending direction of the first groove to the cover body.

In some embodiments, the first protrusion is a plurality of first protrusions arranged at intervals along a circumference of the first sidewall, the first groove is a plurality of first grooves arranged at intervals along a circumference of the first sidewall, and one first protrusion is located between two first grooves.

In some embodiments, the first groove has a height H, the end cap has a thickness t, and the first sidewall has a height H, wherein t < H < 3t, and/or t < H-H < 5t.

In some embodiments, the length of the first groove in the circumferential direction of the cover body is L, the radius of the end cover is R, and the number of the first grooves is n, wherein pi R/6n < L < 11 pi R/6n.

In some embodiments, a guide portion is disposed at a connection position of the cover body and the first side wall, and the guide portion is located at an end far away from the first groove.

According to application embodiment, a heat exchanger includes collecting main and end cover, the end cover of above-mentioned any embodiment, the end cover is established the tip of collecting main, the lid is located in the collecting main.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application. In order to make the technical means of the present application more clearly understood, the present invention may be implemented in accordance with the content of the specification, and in order to make the above and other objects, features and advantages of the present application more comprehensible, specific embodiments thereof are described below.

Drawings

FIG. 1 is a perspective view of an end cap according to an embodiment of the present application.

Fig. 2 is a schematic top view of the end cap of fig. 1.

Fig. 3 is a side schematic view of the end cap of fig. 1.

FIG. 4 is a perspective view of an end cap according to another embodiment of the present application.

FIG. 5 is a perspective view of an end cap according to yet another embodiment of the present application.

Fig. 6 is a schematic top view of the end cap of fig. 5.

Fig. 7 is a side schematic view of the end cap of fig. 5.

FIG. 8 is a perspective view of an end cap according to yet another embodiment of the present application.

FIG. 9 is a schematic view of an end cap and manifold assembly according to an embodiment of the present application.

Fig. 10 is a partially enlarged schematic view at a of fig. 9.

FIG. 11 is a schematic view of a heat exchanger according to an embodiment of the present application.

Reference numerals:

an end cap 100; the cover comprises a cover body 1, a first side wall 2, a first groove 21, a first bulge 22 and a guide part 3;

header 200.

Detailed Description

For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.

It should be understood that the embodiments described are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

As shown in fig. 1, the end cap 100 according to the embodiment of the present application includes a cap body 1 and a first sidewall 2, the first sidewall 2 is connected to the cap body 1, the first sidewall 2 is disposed around a circumference of the cap body, the first sidewall 2 includes a first groove 21 and a first protrusion 22, the first protrusion 22 is disposed adjacent to the first groove 21, and a projection of the first protrusion 22 on a plane where the cap body 1 is disposed exceeds an outer circumferential wall of the first sidewall 2.

Specifically, as shown in fig. 1 to fig. 3, the end cap 100 includes a cover body 1 and a first side wall 2, a peripheral contour shape of the cover body 1 is adapted to a pipe orifice shape of the heat exchanger manifold 200, the first side wall 2 is connected to the cover body 1, the first side wall 2 is disposed at one side of the cover body 1, the first side wall 2 is substantially annular, as shown in fig. 1, the first side wall 2 extends along a thickness direction of the cover body 1, the thickness direction of the cover body 1 is also an axial direction of the end cap 100 in the drawing, and the first side wall 2 extends along the peripheral contour of the cover body 1 and is closed into a circle. It will be appreciated that the cross-sectional shape of the first side wall 2 is adapted to the peripheral profile shape of the cover 1.

As shown in fig. 1, the first side wall 2 includes a first recess 21 and a first protrusion 22, the first protrusion 22 is disposed adjacent to the first recess 21, and a projection of the first protrusion 22 on a plane where the lid body 1 is disposed exceeds an outer peripheral wall of the first side wall 2. As shown in fig. 2, the plane of the cover body 1 is a plane perpendicular to the thickness direction of the cover body 1, the plane perpendicular to the thickness direction of the cover body 1 is defined as a first plane, and the projection of the first protrusion 22 on the first plane exceeds the outer peripheral wall of the first sidewall 2.

Because the projection of first arch 22 on the first plane surpasses the periphery wall of first lateral wall 2, when end cover 100 and pressure manifold 200 are installed, can be better with pressure manifold 200 interior wall butt in the installation, and increase the intensity of end cover 100, the setting of first arch 22 also can lead to the assembly difficulty to appear when end cover 100 inserts pressure manifold 200, the stress when end cover 100 inserts pressure manifold 200 can be reduced in the setting of first recess 21, and is more convenient to install, and the adjacent first arch 22 setting of first recess 21 can reach the effect that reduces stress better, the reliability of connecting end cover 100 and pressure manifold 200 has been improved, thereby the heat exchanger reliability is improved.

Illustratively, in some embodiments, as shown in fig. 1, the first protrusion 22 is a protrusion formed by extending the first sidewall 2 to the outside of the end cap at the first groove 21; in other embodiments, as shown in fig. 5, the first protrusion 22 is a protrusion provided on the outer circumferential wall of the first sidewall 2.

According to the end cover 100 for the heat exchanger in the embodiment of the application, because the cover body 1 is provided with the first groove 21 and the first protrusion 22, the first protrusion 22 can increase the radial size of the end cover 100, the end cover can be better abutted to the collecting pipe 200 in installation, the end cover 100 is more convenient to assemble, the condition that the end cover 100 is smaller in radial size and is easily trapped in the collecting pipe 200 is avoided, the leakage of a refrigeration medium caused by the insecure connection between the end cover 100 and the collecting pipe 200 is also avoided, meanwhile, the structural strength of the end cover 100 is increased, the stress generated when the end cover 100 is installed is reduced by the arrangement of the first groove 21, the problem that the end cover 100 is not well installed due to the arrangement of the first protrusion 22 is solved, the deformation of the collecting pipe or the deformation of the collecting pipe groove caused when the end cover 100 and the collecting pipe 200 are installed is avoided, and the connection reliability of the end cover 100 and the collecting pipe 200 is improved. Meanwhile, due to the arrangement of the first groove 21 and the first protrusion 22, when the end cover 100 is welded with the collecting pipe 200, solder is easier to melt and permeate, the strength of a welding seam is improved, and the connection reliability of the end cover 100 and the collecting pipe 200 is further improved, so that the reliability of the heat exchanger is improved.

In some embodiments, as shown in fig. 1, the first groove 21 penetrates the first sidewall 2 in the thickness direction of the first sidewall 2.

Specifically, as shown in fig. 1 and fig. 3, the first groove 21 penetrates through the first side wall 2 along the thickness direction of the first side wall 2, the thickness direction of the first side wall 2 is the radial direction of the end cover 100, and the first groove 21 is a groove formed in the body of the first side wall 2, so that the first groove 21 is more convenient to machine, and can better reduce the stress when the end cover 100 is inserted into the collecting pipe 200, thereby avoiding the deformation of the collecting pipe or the deformation of a collecting pipe groove caused when the end cover 100 is installed on the collecting pipe 200, improving the reliability of the connection between the end cover 100 and the collecting pipe 200, and further improving the reliability of the heat exchanger.

In some embodiments, as shown in fig. 1, the first groove 21 is located at one end of the cover body 1 away from the cover body 1 in the thickness direction of the cover body 1.

Specifically, as shown in fig. 1 and 3, the first groove 21 is located at one end of the cover body away from the cover body 1 in the thickness direction of the cover body, the first side wall 2 is located at an outer position, the cover body is located at an inner position, the first groove 21 is located at an outer position of the first side wall 2, and the opening of the first groove 21 faces the outer side of the end cover 100 in the axial direction. By the arrangement, the stress of the end cover 100 connected with the collecting pipe 200 can be better reduced by the first groove 21, the collecting pipe deformation or the deformation of the collecting pipe groove caused by the installation of the end cover 100 and the collecting pipe 200 is avoided, the connection reliability of the end cover 100 and the collecting pipe 200 is improved, and the reliability of a heat exchanger is improved.

In some embodiments, the first protrusion 22 is a protrusion formed by extending a portion of the first sidewall 2 outward at the first groove 21.

Specifically, as shown in fig. 1 to 3, the first protrusion 22 is disposed beside the first groove 21, and the first protrusion 22 is a protrusion formed by extending a part of the first sidewall 2 outward at the first groove 21, that is, the first protrusion 22 is a part of the first sidewall 2 and is formed by extending the first sidewall 2 outward of the end cover at the first groove 21, and exceeds the outer side of the body of the end cover 100 in the radial direction. Therefore, the first protrusions 22 are more convenient to machine, the radial size of the end cover 100 is increased due to the arrangement of the first protrusions, the end cover 100 can be abutted to the inner wall of the collecting pipe 200 better when the collecting pipe 200 is inserted into the end cover 100, the problem that the end cover 100 sinks inwards due to the small radial size is solved, the connection reliability of the end cover 100 and the collecting pipe 200 is improved, and the reliability of the heat exchanger is improved.

It will be appreciated that the first protrusion 22 may be machined for the end cap 100 after insertion into the manifold 200 or the end cap 100 may be machined before insertion into the manifold 200.

In some embodiments, the projection of the first protrusion 22 on the plane of the cover 1 increases gradually in the direction toward the first groove 21.

Specifically, as shown in fig. 2, the projection of the first protrusion 22 on the first plane gradually increases in the direction along the first groove 21, the projection of the first protrusion 22 on the first plane extends to the outer side of the end cover 100 in the radial direction and is arranged to extend along the direction, the protruding portion of the first protrusion 22 is in smooth transition with the first side wall 2, and the projection of the first protrusion 22 on the first plane may be in an arc shape, so that the first protrusion 22 is easier to process, and the stress of the protruding portion of the first protrusion 22 is better reduced by the smooth transition, so that the excessive stress at the first protrusion 22 caused by the arrangement of the first protrusion 22 is avoided, the structural strength and reliability of the end cover 100 are improved, and the reliability of the heat exchanger is improved.

In some embodiments, as shown in fig. 1 to 3, the first groove 21 is plural, the plural first grooves 22 are arranged at intervals along the circumference of the first sidewall, the plural first protrusions 22 are plural, the plural first protrusions 22 are arranged at intervals along the circumference of the first sidewall 2, and one first groove 21 is located between two adjacent first protrusions 22.

Specifically, the first grooves 21 are plural, may be 2, 3, 4, 5, 6, and the like, the plural first grooves 22 are arranged along the circumferential interval of the first sidewall, the first protrusions 22 are plural, may be 2, 3, 4, 5, 6, and the like, the plural first grooves 22 are arranged along the circumferential interval of the first sidewall 2, and the plural first protrusions 22 are arranged along the circumferential interval of the first sidewall 2, so as to reduce the stress of the end cover 100 in multiple directions in the radial direction of the end cover 100, better reduce the deformation of the collecting pipe, improve the reliability of the connection between the end cover 100 and the collecting pipe 200, and thus improve the reliability of the heat exchanger.

Further, as shown in fig. 1 to 3, the number of the first grooves 21 is 4, the 4 first grooves 22 are arranged along the circumferential direction of the first sidewall 2 at intervals, the number of the first protrusions 22 is 8, the 8 first protrusions 22 are arranged along the circumferential direction of the first sidewall 2 at intervals, and the 2 first protrusions 22 are arranged on the first sidewall beside one first groove 21, so that the first protrusion 22 is more conveniently processed, the stress of the end cover 100 is better reduced, the end cover 100 and the header pipe 200 are more conveniently assembled, the connection reliability of the end cover 100 and the header pipe 200 is improved, and the reliability of the heat exchanger is improved.

It will be appreciated that in other embodiments, as shown in fig. 4, there are 3 first grooves 21, 6 first protrusions 22, and 2 first protrusions 22 on the first sidewall beside one first groove 21, thereby facilitating the machining of the first protrusions 22 of the end cap 100, better reducing the stress on the end cap 100, facilitating the assembly of the end cap 100 with the header 200, and improving the reliability of the connection between the end cap 100 and the header 200, and thus improving the reliability of the heat exchanger.

In some embodiments, the first protrusion 22 extends along the thickness direction of the lid body 2, and the distance of the first protrusion 22 beyond the outer peripheral wall of the first side wall 2 gradually decreases in the extending direction of the first groove 21 to the lid body 1.

Specifically, as shown in fig. 5, the first projection 22 is located on the outer peripheral wall of the first side wall 2, and the first projection 22 is provided to extend in the thickness direction of the lid body 2, that is, in the axial direction of the end cap 200. The radial size of the end cover 100 is increased by the arrangement of the first protrusion 22, so that the end cover 100 can be better abutted against the inner pipe wall of the collecting pipe 200 when being inserted into the collecting pipe 200, the problem that the end cover 100 is sunken due to small radial size is solved, the structural strength of the end cover 100 is increased by the structure of the first protrusion 22, the reliability of the end cover 100 is improved, and the reliability of the heat exchanger is improved.

Further, in the extending direction of the first groove 21 to the cover body 1, that is, in the direction from the outside to the inside of the end cover 100 in the axial direction, the distance that the first protrusion 22 exceeds the outer peripheral wall of the first side wall 2 is gradually reduced, as shown in fig. 7, specifically, the first protrusion 22 has an inclined surface, and the inclined surface is extended and arranged in the direction from the outside to the inside of the end cover 100 in the axial direction, so that the distance that the first protrusion 22 protrudes the outer peripheral wall of the first side wall 2 is gradually reduced in the axial direction of the end cover 100, and thus, the end cover 100 is more conveniently inserted into the pipe of the collecting pipe 200, the assembly is more convenient, the risk of deformation of the collecting pipe 200 and leakage of the refrigerant medium is avoided, and the arrangement of the first protrusion 22 improves the structural strength of the end cover 100, and the reliability of the heat exchanger is improved.

It will be appreciated that the shape of the projection of the first projection 22 onto the first plane is not limited as long as it is ensured that the first projection 22 tapers in the direction from the outside to the inside in the axial direction of the end cap. In some embodiments, as shown in FIG. 6, the projection of the first protrusion 22 onto the first plane is a triangle-like protrusion, and in other embodiments, as shown in FIG. 8, the projection of the first protrusion 22 onto the first plane is a trapezoid-like protrusion.

In some embodiments, the first protrusion 22 is plural, plural first protrusions 22 are arranged at intervals along the circumference of the first sidewall 2, plural first grooves 21 are plural, plural first grooves 21 are arranged at intervals along the circumference of the first sidewall 2, and one first protrusion 22 is located between two first grooves 21.

Specifically, as shown in fig. 5, there are 3 first protrusions 22, 3 first protrusions 22 are arranged at intervals along the circumference of the first sidewall, 6 first grooves 21 are provided, 6 first grooves 21 are arranged at intervals along the circumference of the first sidewall 2, and two first grooves 21 are provided on both sides of one first protrusion 22. So set up, avoided first arch 22 that the periphery wall of first lateral wall 2 was equipped with and lead to the end cover 100 to insert difficulty when pressure manifold 200 to reduce end cover 100's stress better, make things convenient for the assembly of end cover 100 with pressure manifold 200, and avoided the pressure manifold that causes when end cover 100 and pressure manifold 200 install to warp and the deformation of pressure manifold tube seat, improved the reliability that end cover 100 and pressure manifold 200 are connected, improved the reliability of heat exchanger.

It is to be understood that the number of the first protrusions 22 and the first grooves 21 is not limited to the number shown in the drawings.

In some embodiments, the first groove has a height H, the end cap has a thickness t, and the first sidewall has a height H, wherein t < H < 3t, and/or t < H-H < 5t.

Specifically, as shown in fig. 3 or fig. 7, the height h of the first groove 21 is greater than the thickness t of the end cover, so that the effect of better reducing stress can be achieved by setting the first groove 21, and meanwhile, the height h of the first groove 21 is less than the end cover thickness t which is three times, so that the situation that the residual height of the first side wall 2 of the end cover 100 after the first groove 21 is removed is too small due to too high height of the first groove 21 is avoided, so that the connection height between the end cover 100 and the header pipe 200 at the first groove 21 is too small, and the connection between the end cover 100 and the header pipe 200 is insecure, thereby risking leakage and being beneficial to improving the reliability of the heat exchanger.

Further, the end cover 100 is provided with the first groove 21 penetrating through the first side wall 2, the end cover 100 is connected with the inner pipe wall of the collecting pipe 200 through the first side wall 2, the height of the end cover 100 connected with the inner pipe wall of the collecting pipe 200 at the first groove 21 is H-H, and t is set to be more than H-H and less than 5t, so that the minimum height of the end cover 100 connected with the collecting pipe 200 is ensured, the leakage risk caused by infirm welding due to small contact area of the end cover 100 and the collecting pipe 200 is avoided, the reliability of connection of the end cover 100 and the collecting pipe 200 is improved, the maximum value of the connection height of the end cover 100 and the collecting pipe 200 is limited, the integral height of the end cover 100 is ensured to be within a proper range, and the processing is more convenient.

In some embodiments, the length of the first groove 21 in the circumferential direction of the cap body 1 is L, the radius of the end cap is R, and the number of the first grooves is n, wherein π R/6n < L < 11 π R/6n.

Specifically, as shown in fig. 2 or fig. 6, since the first grooves 21 are disposed around the radial direction of the end cover 100, the length of the first grooves 21 in the circumferential direction of the cover body is L, and L is an arc segment, in order to avoid that the first grooves 21 are disposed too much or too long to reduce the connection strength of the end cover 100, after n first grooves 21 are disposed on the end cover 100, the length 2 pi R-n L of the remaining portion in the circumferential direction of the end cover is at least greater than 1/6 of the circumference of the end cover, and is less than 11/6 of the circumference of the end cover, that is, 2 pi R/6 < 2 pi R-n L < 2 pi R11/6, which is deduced to obtain pi R/6n < L < 11 pi R/6n. Therefore, the problem that the stress of the end cover 100 cannot be reduced due to too short or too little arrangement of the first groove 21 is solved, and the problem that the connection strength of the end cover 100 and the collecting pipe 200 is too low due to too long or too much arrangement of the first groove 21 is solved, so that the end cover 100 is convenient to assemble, the stress of the end cover 100 is reduced, the connection strength of the end cover 100 and the collecting pipe 200 is ensured, the connection reliability of the end cover 100 and the collecting pipe 200 is improved, and the reliability of the heat exchanger is improved.

It can be understood that, if the shape of the header pipe 200 is a square pipe or a D-shaped pipe, the shape of the end cover 100 correspondingly matched with the header pipe is also a square pipe or a D-shaped pipe, and on the first side wall 2 of the end cover 100, it is ensured that the length of the remaining part of the end cover in the circumferential direction after the first groove 21 is provided is at least greater than 1/6 of the circumference of the end cover and less than 11/6 of the circumference of the end cover, so that convenience in installation of the end cover 100 can be ensured, stress of the end cover 100 is reduced, the connection strength of the end cover 100 and the header pipe 200 is ensured, the connection reliability of the end cover 100 and the header pipe 200 is improved, and the reliability of the heat exchanger is improved.

In some embodiments, the connection between the cover 1 and the first sidewall 2 is provided with a guiding portion 3, and the guiding portion 3 is located at an end far away from the first groove 21.

Specifically, as shown in fig. 1 or fig. 5, a guiding portion 3 is disposed at a joint of the cover body 1 and the first side wall 2, and the guiding portion 3 is located at an inner side position in the axial direction of the end cover, it can be understood that the guiding portion 3 may be an arc shape, an oblique line shape, or other shapes, and the guiding portion 3 is in smooth transition at the joint of the first side wall 2 and the cover body 1, so that the end cover 100 is more convenient to insert into the collecting pipe 200 and assemble, the end cover 100 is prevented from being damaged, and the reliability of the heat exchanger is improved.

A heat exchanger according to an embodiment of the present application is described below with reference to the drawings.

As shown in fig. 9, a heat exchanger according to an embodiment of the present application includes an end cover 100 and a header 200, the end cover 100 is disposed at an end of the header 200, the end cover 100 may be an end cover in any of the above embodiments, and a cover body 1 of the end cover 100 is located in the header 200.

Specifically, as shown in fig. 9, the end caps 100 are located at both ends of the header 200, and seal both ends of the header 200 to prevent the refrigerant medium inside the header 200 from leaking. In some embodiments, as shown in fig. 10, the end cap 100 is inserted into the header 200, the cover 1 is completely located in the header 200, the first sidewall 2 is located closer to the outer side of the header 200 in the axial direction with respect to the cover 1, and the first sidewall 2 is connected to the inner pipe wall of the header 200.

Further, as shown in fig. 11, the heat exchanger further includes 2 heat exchange tubes and fins, the header pipes 200 are 2, 2 header pipes are arranged at intervals in parallel, the heat exchange tubes are connected between the 2 header pipes and communicated with the header pipes on two sides, the heat exchange tubes are multiple, the heat exchange tubes are arranged at intervals in the length direction of the header pipes, and the fins are arranged between two adjacent heat exchange tubes.

According to the heat exchanger disclosed by the embodiment of the application, the end cover 100 and the collecting pipe 200 are more conveniently assembled, the stress is favorably reduced, the end cover 100 and the collecting pipe 200 are more reliably connected, the risks of deformation of the collecting pipe 200 and leakage of a refrigerating medium are avoided, and the reliability of the heat exchanger is improved.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

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, "a plurality" means at least two, e.g., two, three, etc., unless expressly specified otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. 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.

In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims (12)

1. An end cover is characterized by comprising a cover body and a first side wall, wherein the first side wall is connected with the cover body and arranged around the circumferential direction of the cover body, the first side wall comprises a first groove and a first bulge, the first bulge is arranged adjacent to the first groove, and the projection of the first bulge on the plane of the cover body exceeds the peripheral wall of the first side wall.

2. The end cap of claim 1, wherein the first groove extends through the first sidewall in a thickness direction of the first sidewall.

3. The end cap of claim 2, wherein the first groove is located at an end of the cover body away from the cover body in a thickness direction of the cover body.

4. The end cap of claim 3, wherein the first protrusion is a protrusion formed by a portion of the first sidewall extending outwardly at the first recess.

5. An end closure according to claim 4, wherein the projection of the first projection onto the plane of the cover increases in a direction towards the first recess.

6. The end closure of claim 4, wherein said first recess is a plurality of said first recesses circumferentially spaced along said first sidewall, said first protrusion is a plurality of said first protrusions circumferentially spaced along said first sidewall, one of said first recesses being located between two adjacent ones of said first protrusions.

7. An end cap according to claim 3, wherein the first projection is provided extending in a thickness direction of the lid body, and a distance of the first projection beyond the first side wall peripheral wall is gradually reduced in an extending direction of the first recess to the lid body.

8. The end closure of claim 7, wherein said first projection is a plurality of said first projections, a plurality of said first projections are circumferentially spaced along said first sidewall, a plurality of said first recesses are circumferentially spaced along said first sidewall, and one of said first projections is located between two of said first recesses.

9. An end closure according to claim 3, wherein the first recess has a height H, the end closure has a thickness t, and the first side wall has a height H, wherein t < H < 3t, and/or t < H-H < 5t.

10. The end cap of claim 6 or 8, wherein the length of the first groove in the circumferential direction of the cover body is L, the radius of the end cap is R, the number of the first grooves is n, and wherein pi R/6n < L < 11 pi R/6n.

11. The end cap of claim 1, wherein a guide is provided at a junction of the cover and the first sidewall, the guide being located at an end distal from the first groove.

12. A heat exchanger, comprising a header and an end cap according to any one of claims 1 to 11, wherein the end cap is provided at an end of the header, and the cover is located inside the header.

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