CN117190751A - Heat exchanger and purifier - Google Patents

Abstract

The application relates to a heat exchanger and a water purifier, wherein the heat exchanger comprises a shell and a heat exchange tube, the shell comprises a first main body and a second main body, a containing cavity is arranged in the first main body, the second main body comprises a cover plate and a baffle plate arranged on the cover plate, the cover plate is arranged on at least one side of the first main body in a covering way to seal the containing cavity, the baffle plate is inserted into the containing cavity and forms a containing channel with the cavity wall of the containing cavity, and the heat exchange tube is contained in the containing channel. A water purifier comprises the heat exchanger. According to the heat exchanger and the water purifier, the cover plate of the heat exchanger is covered on at least one side of the first main body, namely, the cover plate is arranged on the side surface of the first main body, and the heat exchange tube is inserted into the accommodating channel from the side surface of the first main body, so that the requirement on the flatness deformation of the heat exchange tube can be reduced, and the installation efficiency is improved; the baffle is inserted in the containing cavity and forms a containing channel with the cavity wall of the containing cavity, so that independent heat exchange spaces can be separated in the containing cavity, and the heat exchange efficiency is improved.

Description

Heat exchanger and purifier

Technical Field

The application relates to the technical field of water purification, in particular to a heat exchanger and a water purifier.

Background

Along with the improvement of the living standard of people, the importance of consumers on the health of drinking water is also higher and higher, and the water purifier is widely applied. At present, part of water purifiers have a heating function, if warm water is needed to be drunk or boiled, the water is required to be cooled after boiled, the waiting time is long, and the water can not be drunk in time.

Therefore, a heat exchanger is arranged in the water purifier to cool the hot water in the water purifier in real time. However, in the heat exchanger of the existing water purifier, when the heat exchange tube is assembled in the heat exchanger shell, the flatness requirement of the heat exchange tube is increased, and the structural stability is poor during installation, so that the installation efficiency and the heat exchange efficiency of the heat exchanger are poor.

Disclosure of Invention

Accordingly, it is necessary to provide a heat exchanger and a water purifier for solving the problem that the conventional heat exchanger is poor in both of the installation efficiency and the heat exchange efficiency.

The utility model provides a heat exchanger, includes shell and heat exchange tube, the shell includes first main part and second main part, establish the appearance chamber in the first main part, the second main part includes the apron and locates the baffle of apron, the apron lid is located at least one side of first main part is in order to with hold the chamber is sealed, the baffle insert locate hold the intracavity and with the chamber wall in appearance chamber forms the accommodation channel, the heat exchange tube accept in the accommodation channel.

The cover plate is covered on at least one side of the first main body, namely the cover plate is arranged on the side surface of the first main body, and the heat exchange tube is inserted into the accommodating channel from the side surface of the first main body, so that the requirement on the flatness deformation of the heat exchange tube can be reduced, and the installation efficiency is improved; the baffle is inserted in the containing cavity and forms a containing channel with the cavity wall of the containing cavity, so that independent heat exchange spaces can be separated in the containing cavity, and the heat exchange efficiency is improved.

In one embodiment, a guiding part is arranged in the accommodating cavity, the guiding part is in plug-in fit with the baffle plate along a first direction, and the first direction is the length direction of the baffle plate.

In one embodiment, at least two protruding ribs are arranged in the accommodating cavity at intervals, the guide part is a guide groove formed between two adjacent protruding ribs, and the guide groove extends along the first direction.

In one embodiment, the number of the baffles is at least two, each baffle is arranged on one side of the cover plate facing the first main body, and the baffles are arranged side by side at intervals along a second direction intersecting the first direction.

In one embodiment, the number of the guide parts is at least two and the guide parts are arranged corresponding to the baffle plate, and each guide part is arranged on two opposite sides of the containing cavity in parallel and at intervals along the second direction.

In one embodiment, each baffle plate and the cavity wall of the cavity form at least two accommodating channels, each accommodating channel extends along the first direction and is distributed side by side along the second direction, and the shell is provided with a first medium inlet and a first medium outlet which are communicated with each accommodating channel.

In one embodiment, the length of each baffle is smaller than the length of the accommodating cavity, so that one end, away from the cover plate, of each accommodating channel is communicated with each other, and one end, close to the cover plate, of each accommodating channel is communicated with the first medium inlet and the first medium outlet respectively.

In one embodiment, the first medium inlet and the first medium outlet are provided on the first body.

In one embodiment, the shell further has a second medium inlet and a second medium outlet, and two ends of the heat exchange tube are respectively inserted into the second medium inlet and the second medium outlet.

In one embodiment, the heat exchanger further comprises a first sealing member, wherein the first sealing member is arranged between the second medium inlet and one end part of the heat exchange tube, and/or the first sealing member is arranged between the second medium inlet and the other end part of the heat exchange tube.

In one embodiment, the first main body is provided with a first opening, the cover plate is provided with a second opening, and when the cover plate is covered on the first main body, the first opening and the second opening enclose the second medium inlet and the second medium outlet.

In one embodiment, the first opening portion and the second opening portion are welded and fixed, and a welding energy guiding rib is arranged on one side of the first opening portion facing the second opening portion.

In one embodiment, the cavity is open at one end and closed at the other end in the first direction, and the cover plate is covered on one side of the first main body to close the opening of the cavity.

A water purifier comprises the heat exchanger.

According to the water purifier, the cover plate of the heat exchanger is covered on at least one side of the first main body, namely, the cover plate is arranged on the side surface of the first main body, and the heat exchange tube is inserted into the accommodating channel from the side surface of the first main body, so that the requirement on the flatness deformation of the heat exchange tube can be reduced, and the installation efficiency is improved; the baffle is inserted in the containing cavity and forms a containing channel with the cavity wall of the containing cavity, so that independent heat exchange spaces can be separated in the containing cavity, and the heat exchange efficiency is improved.

Drawings

FIG. 1 is a schematic diagram of a heat exchanger in an embodiment.

Fig. 2 is an exploded view of the heat exchanger shown in fig. 1.

Fig. 3 is a schematic view of a heat exchange tube in the heat exchanger shown in fig. 1.

Fig. 4 is a cross-sectional view of the heat exchanger shown in fig. 1.

Fig. 5 is a schematic view of a first body of the heat exchanger of fig. 1.

Fig. 6 is a schematic view of a second body of the heat exchanger of fig. 1.

Reference numerals:

100. a housing; 101. an accommodation channel; 102. a first medium inlet; 103. a first medium outlet; 104. a second medium inlet; 105. a second medium outlet; 110. a first body; 111. a cavity; 112. a guide part; 113. protruding ridges; 114. a first opening portion; 114a, welding energy guide ribs; 120. a second body; 121. a cover plate; 121a, a second opening; 122. a baffle; 200. a heat exchange tube; 300. a first seal.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

In the present disclosure, the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying a number of technical features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

In the present application, unless explicitly specified and limited otherwise, the terms "initial," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances. When an element is referred to as being "fixed" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Referring to fig. 1 to 4, the heat exchanger in an embodiment includes a housing 100 and a heat exchange tube 200, the housing 100 includes a first body 110 and a second body 120, a cavity 111 is provided in the first body 110, the second body 120 includes a cover plate 121 and a baffle 122122 provided on the cover plate 121, the cover plate 121 covers at least one side of the first body 110 to seal the cavity 111, the baffle 122 is inserted into the cavity 111 and forms a receiving channel 101 with a cavity wall of the cavity 111, and the heat exchange tube 200 is received in the receiving channel 101.

It should be noted that, the accommodating channel 101 is used for accommodating a first medium, the heat exchange tube 200 is used for loading a second medium, and the temperature of the second medium is higher than that of the first medium, and the heat exchange tube 200 is accommodated in the accommodating channel 101, so that heat exchange and cooling of the second medium can be realized through heat exchange. Wherein, a gap is provided between the outer wall of the heat exchange tube 200 and the inner wall of the accommodating channel 101 to provide an accommodating space for the first medium.

In the above embodiment, the heat exchanger is applied to the water purifier, and the heat exchanger is used for cooling hot water in the water purifier to a preset temperature range, so as to realize real-time warm water or cool and white drinking. The heat exchange tube 200 is a corrugated tube, the first medium is cold water, the second medium is hot water, the hot water is continuously input into the heat exchange tube 200 by a water supply module of the water purifier, and the cold water is injected into the accommodating channel 101 from an inlet of the housing 100, so that the hot water in the heat exchange tube 200 is cooled.

In the heat exchanger described above, the cover plate 121 is covered on at least one side of the first main body 110, that is, the cover plate 121 is disposed on the side surface of the first main body 110, and the heat exchange tube 200 is inserted into the accommodating channel 101 from the side surface of the first main body 110, so that the requirement on the flatness deformation amount of the heat exchange tube 200 can be reduced, and the installation efficiency is improved; the baffle 122 is inserted into the accommodating cavity 111 and forms the accommodating channel 101 with the cavity wall of the accommodating cavity 111, so that an independent heat exchange space can be separated in the accommodating cavity 111, and the heat exchange efficiency is improved.

In the embodiment, the cover plate 121 and the first main body 110 are fixed by ultrasonic welding, and the welding track and the welding area of the cover plate 121 and the first main body 110 can be reduced due to the side face combination welding mode, so that the situation that the welding track and the welding area are large and easy to deform in the upper and lower combination welding mode is improved, and the welding qualification rate is improved.

In this embodiment, the first body 110 is of an integral structure, for example, the first body 110 is integrally formed by injection molding, so that the processing is convenient and the disassembly and assembly are convenient.

In the present embodiment, the cover 121 is vertically connected to the baffle 122, and the cover 121 and the baffle 122 are integrally formed, for example, the cover and the baffle 122 may be integrally formed by injection molding. In other embodiments, the cover plate 121 and the baffle 122 may be a separate structure, and the cover plate 121 and the baffle 122 may be fixed by riveting or welding.

Referring to fig. 5, a guiding portion 112 is disposed in the cavity 111, and the guiding portion 112 is inserted and engaged with the baffle 122 along a first direction, which is a length direction of the baffle 122.

The first direction is the X direction shown in fig. 5. When the cover plate 121 is covered on the first main body 110, the baffle 122 is accommodated in the accommodating cavity 111 and is in plug-in fit with the guiding portion 112, so that the baffle 122 can be guided and limited, and the baffle 122 is prevented from moving in the accommodating cavity 111.

Specifically, referring to fig. 5, at least two protruding ribs 113 are disposed in the cavity 111 at intervals, and the guiding portion 112 is a guiding groove formed between two adjacent protruding ribs 113, and the guiding groove extends along the first direction.

It will be appreciated that a guiding groove is formed between two adjacent protruding ribs 113, the guiding groove and the extending direction of the baffle 122 are the same, and the baffle 122 can move in the guiding groove along the first direction, so as to realize the plugging fit between the guiding part 112 and the baffle 122 along the first direction.

In this embodiment, the baffle 122 and the guide groove are both linear. In other embodiments, the baffle 122 and the guide slot may be curved or otherwise shaped.

In this embodiment, each ridge 113 and the cavity wall of the cavity 111 are in an integral structure, for example, each ridge 113 is integrally formed on the cavity wall of the cavity 111 by injection molding. In other implementations, each ridge 113 and the wall of the cavity 111 may be a separate structure, for example, each ridge 113 and the wall of the cavity 111 may be detachably connected.

In this embodiment, each ridge 113 has a rectangular cross section. In other embodiments, each ridge 113 may have a circular, oval, or other cross-section.

Referring to fig. 6, the number of the baffles 122 is at least two, each baffle 122 is disposed on one side of the cover 121 facing the first body 110, and each baffle 122 is spaced apart from each other along a second direction intersecting the first direction.

The second direction is the Y direction shown in fig. 6, that is, the thickness direction of the baffle 122. In this embodiment, the second direction is perpendicular to the first direction. In other embodiments, the second direction may also be at an angle other than 90 degrees from the first direction.

In the present embodiment, the sizes and shapes of the baffles 122 are all identical, and the baffles 122 are equally spaced in the second direction. In other embodiments, the size and shape of each baffle 122 may not be exactly the same.

Further, referring to fig. 5, the number of the guide portions 112 is at least two and is disposed corresponding to the baffle 122, and the guide portions 112 are arranged at opposite sides of the cavity 111 side by side and spaced apart along the second direction.

It is understood that the guiding portions 112 are disposed in a one-to-one correspondence with the baffles 122, and each guiding portion 112 is in plug-in fit with one baffle 122. In the depth direction of the cavity 111 (i.e., the Z direction shown in fig. 5), a plurality of guiding portions 112 are respectively disposed on the top and bottom sides of the cavity 111, and each guiding portion 112 is disposed on the top and bottom sides of the cavity 111 side by side at intervals along the second direction.

In the present embodiment, each baffle 122 is linear, and accordingly, each guide portion 112 is also linear to adapt to the baffle 122. In other embodiments, each baffle 122 may also be curved or otherwise shaped, and accordingly, each guide 112 may also be curved or otherwise shaped.

Further, referring to fig. 4 and 5, each baffle 122 and the wall of the accommodating cavity 111 form at least two accommodating channels 101, each accommodating channel 101 extends along the first direction and is arranged side by side along the second direction, and the housing 100 has a first medium inlet 102 and a first medium outlet 103 communicating with each accommodating channel 101.

The first medium is input into the accommodating channel 101 through the first medium inlet 102, exchanges heat with the second medium in the heat exchange tube 200, and is discharged out of the accommodating channel 101 through the first medium outlet 103.

In this embodiment, each baffle 122 divides the accommodating cavity 111 into a plurality of independent accommodating channels 101, and each accommodating channel 101 is communicated with each other, so that the first medium inlet 102 and the first medium outlet 103 and at least one accommodating channel 101 thereof can be used.

Referring to fig. 4 and 5, the length of each baffle 122 is smaller than the length of the cavity 111, so that one end of each accommodating channel 101 far from the cover plate 121 is mutually communicated, and one end of each accommodating channel 101 near the cover plate 121 is respectively communicated with the first medium inlet 102 and the first medium outlet 103.

Here, since the length of each baffle 122 is smaller than the length of the cavity 111, the end of each receiving channel 101 away from the cover plate 121 is not separated by the baffle 122, so that the end of each receiving channel 101 away from the cover plate 121 can communicate with each other, and the end of each receiving channel 101 near the cover plate 121 communicates with the first medium inlet 102 and the first medium outlet 103, respectively. Through this setting, do benefit to and improve heat exchange efficiency, and structural design is simple reasonable.

In the present embodiment, the length of each baffle 122 is equal to and smaller than the length of the cavity 111, so as to facilitate batch processing of each baffle 122. In other embodiments, the length of each baffle 122 may also be unequal, so long as it is less than the length of the cavity 111.

In this embodiment, referring to fig. 5, the first medium inlet 102 and the first medium outlet 103 are disposed on the first main body 110.

Here, the first medium inlet 102 and the first medium outlet 103 are disposed on the same side of the first body 110, and the first medium inlet 102 and the first medium outlet 103 are spaced apart. In other embodiments, the first medium inlet 102 and the first medium outlet 103 may also be disposed on the second body 120, or disposed at the connection between the first body 110 and the second body 120.

In this embodiment, the number of the first medium inlets 102 and the number of the first medium outlets 103 are one, and each has a hollow cylindrical shape. In other embodiments, the number of the first medium inlets 102 and the first medium outlets 103 may be at least two, each of the first medium inlets 102 and each of the first medium outlets 103 may be arranged side by side at intervals, and each of the first medium inlets 102 and each of the first medium outlets 103 may be in a hollow prism shape, a hole shape or other shapes. Here, the number and shape of the first medium inlet 102 and the first medium outlet 103 are not particularly limited.

Referring to fig. 4, the housing 100 further has a second medium inlet 104 and a second medium outlet 105, and two ends of the heat exchange tube 200 are respectively inserted into the second medium inlet 104 and the second medium outlet 105.

The second medium is input into the heat exchange tube 200 through the second medium inlet 104, exchanges heat with the first medium in the accommodating channel 101, and is discharged out of the heat exchange tube 200 through the second medium outlet 105.

In this embodiment, the number of the second medium inlets 104 and the second medium outlets 105 is one, and each has a hollow cylindrical shape. In other embodiments, the number of the second medium inlets 104 and the second medium outlets 105 may be at least two, each of the second medium inlets 104 and each of the second medium outlets 105 may be arranged side by side at intervals, and each of the second medium inlets 104 and each of the second medium outlets 105 may be in a hollow prism shape, a hole shape or other shapes. Here, the number and shape of the second medium inlets 104 and the second medium outlets 105 are not particularly limited.

Further, referring to fig. 3 and 4, the heat exchanger further includes a first sealing member 300, wherein the first sealing member 300 is disposed between the second medium inlet 104 and one end portion of the heat exchange tube 200, and/or the first sealing member 300 is disposed between the second medium inlet 104 and the other end portion of the heat exchange tube 200.

It will be appreciated that by providing the first seal 300, the first seal 300 can be sandwiched between the heat exchange tube 200 and the second medium inlet 104, and/or between the heat exchange tube 200 and the second medium outlet 105, such that the second medium in the heat exchange tube 200 can reliably circulate within the heat exchange tube 200 without mixing into the receiving channel 101, and the first medium in the same receiving channel can not mix into the heat exchange tube 200.

In this embodiment, the first sealing member 300 is a sealing ring, the sealing ring is sleeved at the end of the heat exchange tube 200, the heat exchange tube 200 is a corrugated tube, and the sealing ring 13 can be limited and fixed by using an annular groove formed by a smaller outer diameter part of the corrugated tube by means of the shape characteristics of the corrugated tube. For example, the sealing ring is sleeved on the corrugated pipe at the minimum outer diameter.

In this embodiment, referring to fig. 5 and 6, the first main body 110 is provided with a first opening 114, the cover 121 is provided with a second opening 121a, and when the cover 121 is covered on the first main body 110, the first opening 114 and the second opening 121a enclose the second medium inlet 104 and the second medium outlet 105.

For example, referring to fig. 1, the first opening 114 is semi-cylindrical, the second opening 121a is semi-cylindrical, and when the cover plate 121 is disposed on the first body 110, the first opening 114 is abutted with the second opening 121a, and a cylindrical second medium inlet 104 and second medium outlet 105 are formed.

It should be noted that, in other embodiments, the second medium inlet 104 and the second medium outlet 105 may be disposed on the second body 120, or the second medium inlet 104 and the second medium outlet 105 may be disposed on the first body 110.

Referring to fig. 6, the first opening 114 and the second opening 121a are welded and fixed, and a welding energy guiding rib 114a is disposed on a side of the first opening 114 facing the second opening 121a.

Specifically, when the cover plate 121 is disposed on the first body 110, the first opening 114 is abutted against the second opening 121a and is fixed by ultrasonic welding, and the welding ribs 114a are disposed to concentrate ultrasonic energy to rapidly heat and melt and bond the first opening 114 and the second opening 121a.

In this embodiment, the welding energy director 114a has a triangular prism shape. In other embodiments, the welding beads 114a may also be cylindrical or other shapes.

Referring to fig. 2, the cavity 111 is opened at one end and closed at the other end in the first direction, and the cover plate 121 is disposed on one side of the first body 110 to close the opening of the cavity 111.

Here, the accommodating cavity 111 is opened at one end and closed at the other end in the first direction, the cover plate 121 is covered on one side of the first body 110, and the heat exchange tube 200 is inserted into the accommodating channel 101 from the side surface of the first body 110, so that the requirement on the flatness deformation amount of the heat exchange tube 200 can be reduced, and the installation efficiency is improved.

The installation process of the heat exchanger comprises the following steps: the first sealing member 300 is first installed into the heat exchange tube 200 which has been folded; the heat exchange tube 200 having the first sealing member 300 is inserted into the receiving chamber 111 of the first body 110; then inserting the baffle 122 of the second body 120 in alignment with the guide groove in the accommodating chamber 111; finally, the second body 120 is formed integrally with the first body 110 by ultrasonic welding.

Referring to fig. 1, a water purifier in an embodiment includes the heat exchanger described above.

It should be noted that, the above-mentioned water purifier still includes former water tank, filter assembly, heating element and water purification case, and former water tank is used for storing raw water, and the raw water is after the filter assembly purifies and heats, stores in the water purification case, and when the user needs to get water, the water pump pumps the water purification in the water purification case into the heat exchange tube 200 of heat exchanger to in the heat exchange tube 200 again follow the play water nozzle of water purifier and discharge after exchanging heat.

In the above water purifier, the cover plate 121 of the heat exchanger is covered on at least one side of the first main body 110, that is, the cover plate 121 is arranged on the side surface of the first main body 110, and the heat exchange tube 200 is inserted into the accommodating channel 101 from the side surface of the first main body 110, so that the requirement on the flatness deformation amount of the heat exchange tube 200 can be reduced, and the installation efficiency is improved; the baffle 122 is inserted into the accommodating cavity 111 and forms the accommodating channel 101 with the cavity wall of the accommodating cavity 111, so that an independent heat exchange space can be separated in the accommodating cavity 111, and the heat exchange efficiency is improved.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims (14)

1. A heat exchanger, comprising:

the shell (100) comprises a first main body (110) and a second main body (120), wherein a containing cavity (111) is formed in the first main body (110), the second main body (120) comprises a cover plate (121) and a baffle plate (122) arranged on the cover plate (121), the cover plate (121) is arranged on at least one side of the first main body (110) in a covering mode to seal the containing cavity (111), and the baffle plate (122) is inserted into the containing cavity (111) and forms a containing channel (101) with the cavity wall of the containing cavity (111);

and a heat exchange tube (200) accommodated in the accommodation channel (101).

2. The heat exchanger according to claim 1, wherein a guiding portion (112) is disposed in the accommodating cavity (111), the guiding portion (112) is in plug-in fit with the baffle plate (122) along a first direction, and the first direction is a length direction of the baffle plate (122).

3. The heat exchanger according to claim 2, wherein at least two protruding ridges (113) are arranged in the cavity (111) at intervals, the guiding portion (112) is a guiding groove formed between two adjacent protruding ridges (113), and the guiding groove extends along the first direction.

4. The heat exchanger according to claim 2, wherein the number of baffles (122) is at least two, each baffle (122) is provided on a side of the cover plate (121) facing the first main body (110), and each baffle (122) is arranged side by side at intervals along a second direction intersecting the first direction.

5. The heat exchanger according to claim 4, wherein the number of the guide portions (112) is at least two and is arranged corresponding to the baffle plate (122), and each guide portion (112) is arranged at two opposite sides of the cavity (111) side by side and spaced apart along the second direction.

6. The heat exchanger according to claim 4, wherein each baffle (122) forms at least two of the receiving channels (101) with a wall of the receiving cavity (111), each receiving channel (101) extending in the first direction and being distributed side by side in the second direction, the housing (100) having a first medium inlet (102) and a first medium outlet (103) communicating with each receiving channel (101).

7. The heat exchanger according to claim 6, wherein the length of each baffle (122) is smaller than the length of the accommodating chamber (111) so that the ends of the accommodating passages (101) away from the cover plate (121) are communicated with each other, and the ends of the accommodating passages (101) near the cover plate (121) are respectively communicated with the first medium inlet (102) and the first medium outlet (103).

8. The heat exchanger according to claim 6, wherein the first medium inlet (102) and the first medium outlet (103) are provided on the first body (110).

9. The heat exchanger according to claim 1, wherein the housing (100) further has a second medium inlet (104) and a second medium outlet (105), and both ends of the heat exchange tube (200) are inserted into the second medium inlet (104) and the second medium outlet (105), respectively.

10. The heat exchanger according to claim 9, further comprising a first seal (300), wherein the first seal (300) is arranged between the second medium inlet (104) and one end of the heat exchange tube (200), and/or wherein the first seal (300) is arranged between the second medium inlet (104) and the other end of the heat exchange tube (200).

11. The heat exchanger according to claim 9, wherein the first main body (110) is provided with a first opening (114), the cover plate (121) is provided with a second opening (121 a), and when the cover plate (121) is covered on the first main body (110), the first opening (114) and the second opening (121 a) enclose the second medium inlet (104) and the second medium outlet (105).

12. The heat exchanger according to claim 11, wherein the first opening (114) and the second opening (121 a) are welded and fixed, and a welding energy guiding rib (114 a) is provided on a side of the first opening (114) facing the second opening (121 a).

13. The heat exchanger according to claim 1, wherein the cavity (111) is open at one end and closed at the other end in the first direction, and the cover plate (121) is provided to cover one side of the first body (110) to close the opening of the cavity (111).

14. A water purifier comprising a heat exchanger according to any one of claims 1-13.