CN116952018A

CN116952018A - Heat exchanger and fluid heating appliance

Info

Publication number: CN116952018A
Application number: CN202210415988.2A
Authority: CN
Inventors: 罗金柳生; 任浩南; 徐尧; 马向阳; 南春来; 杨柳斌; 裴胜招
Original assignee: Guangdong Midea Consumer Electric Manufacturing Co Ltd
Current assignee: Guangdong Midea Consumer Electric Manufacturing Co Ltd
Priority date: 2022-04-20
Filing date: 2022-04-20
Publication date: 2023-10-27

Abstract

The application discloses a heat exchanger and a fluid heating appliance, wherein the heat exchanger comprises at least two heat conducting plates and a shell, the shell is divided into chambers which are sequentially arranged in parallel through the heat conducting plates, medium flow paths are arranged in the chambers, and the adjacent medium flow paths on two sides of the heat conducting plates are respectively used for circulating a first medium and a second medium; the two ends of the medium flow path for the first medium to circulate are respectively provided with a first medium flow path inlet and a first medium flow path outlet, and the two ends of the medium flow path for the second medium to circulate are respectively provided with a second medium flow path inlet and a second medium flow path outlet; the temperature of the first medium at the first medium flow path inlet is different from the temperature of the second medium at the second medium flow path inlet. The first medium or the second medium exchanges heat through at least two heat conducting plates in sequence, so that the heat exchange times and the heat exchange area are increased, the heat exchange efficiency is improved, and meanwhile, the volume of the heat exchanger is basically not influenced, so that the heat exchanger can be suitable for smaller appliances.

Description

Heat exchanger and fluid heating appliance

Technical Field

The application belongs to the technical field of heat exchangers, and particularly relates to a heat exchanger and a fluid heating device.

Background

The instant heating kettle or the instant heating bottle can rapidly heat water through the heater so as to meet the requirement of a user on rapidly obtaining hot water, and generally has a plurality of gears such as warm water, hot water, boiling water and the like. When the water heater is not in boiling stage, the cold water to be heated is used for cooling the boiling water to obtain the boiling water with the specified temperature, namely, the key for determining the instant property of the water heater for providing the warm boiling water is heating efficiency and cooling efficiency, but the existing heat exchanger for cooling the boiling water by using the cold water to be heated has the problem of low heat exchange efficiency, and the defect that the boiling water with the specified temperature cannot be obtained quickly can not be realized.

Disclosure of Invention

The application aims to at least solve the technical problems that the heat exchange efficiency of the heat exchanger is low and the boiled water with the specified temperature can not be obtained quickly to a certain extent. To this end, the application provides a heat exchanger and a fluid heating appliance.

The embodiment of the application provides a heat exchanger, which comprises:

at least two heat conductive plates; and, a step of, in the first embodiment,

the shell is divided into chambers which are arranged in parallel in sequence through the heat conducting plate, a medium flow path is arranged in the chambers, and the medium flow paths adjacent to the two sides of the heat conducting plate are respectively used for the circulation of a first medium and a second medium;

The two ends of the first medium flow path for the first medium to circulate are respectively provided with a first medium flow path inlet and a first medium flow path outlet, and the two ends of the second medium flow path for the second medium to circulate are respectively provided with a second medium flow path inlet and a second medium flow path outlet;

the temperature of the first medium at the first medium flow path inlet is different from the temperature of the second medium at the second medium flow path inlet.

In some embodiments, the chamber between two of the thermally conductive plates includes two communicating first and second subchambers disposed in parallel with the chamber.

In some embodiments, a first sub-medium flow path is provided in the first sub-chamber, and a second sub-medium flow path is provided in the second sub-chamber, and the first sub-medium flow path and the second sub-medium flow path are communicated to form the medium flow path for the first medium or the second medium to circulate.

In some embodiments, the housing comprises:

the two shell covers are respectively arranged on the two heat conducting plates to form two chambers with the two heat conducting plates respectively;

At least one housing disposed between two adjacent heat conductive plates forming the chamber including the first sub-chamber and the second sub-chamber with the two adjacent heat conductive plates.

In some embodiments, a flow path rib is provided on a side of the cover adjacent to the heat transfer plate, and the cover, the heat transfer plate adjacent to the cover, and the flow path rib form the media flow path within the chamber.

In some embodiments, the shell comprises a shell plate and shell walls surrounding the periphery of the shell plate, flow path rib plates are respectively arranged on two sides, adjacent to the heat-conducting plate, of the shell plate, the heat-conducting plate positioned on two sides of the shell body and the flow path rib plates respectively form the first sub-medium flow path and the second sub-medium flow path in the first sub-chamber and the second sub-chamber.

In some embodiments, a subchamber communication port is formed in the shell plate or the shell wall, and the first subchamber medium flow path in the first subchamber is communicated with the second subchamber medium flow path in the second subchamber through the subchamber communication port to form the medium flow path.

In some embodiments, the media flow path extends over adjacent ones of the thermally conductive plates; and, the sub-medium flow paths are distributed over the adjacent heat conductive plates, respectively.

In some embodiments, each of the chambers is provided with a communication port at both ends of the medium flow path, and the medium flow paths of the chambers spaced apart communicate through the communication port to form the first medium flow path through which the first medium flows and the second medium flow path through which the second medium flows, respectively.

In some embodiments, the heat-conducting plate is a wave-shaped heat-conducting plate.

In some embodiments, the heat exchanger further comprises fasteners, the shell cover and the shell body being connected by a plurality of fasteners.

In some embodiments, the heat exchanger further comprises sealing rings sleeved on the heat conducting plate or arranged on two sides of the heat conducting plate.

The application also proposes a fluid heating appliance comprising at least one heat exchanger as described above, a heating assembly and a water outlet assembly;

the heating assembly is communicated with a water source through the first medium flow path, and the heating assembly is communicated with the water outlet assembly through the second medium.

In some embodiments, the flow direction of the first medium in the first medium flow path is opposite to the flow direction of the second medium in the second medium flow path.

In some embodiments, when the heating appliance comprises more than two of the heat exchangers, the first media flow path of each of the heat exchangers is sequentially connected in series or in parallel; and the second medium flow paths in each heat exchanger are sequentially connected in series or in parallel.

In some embodiments, the fluid heating appliance further comprises a water diversion assembly in communication with the heating assembly and the water source, the water diversion assembly further in communication with the heating assembly and the heat exchanger for the chamber through which the first medium flows.

In some embodiments, the heating assembly is also in communication with the water outlet assembly via a conduit.

In some embodiments, the second medium is boiling water.

In some embodiments, the fluid heating appliance is a ready-to-use kettle.

The embodiment of the application has at least the following beneficial effects:

the shell of the heat exchanger is divided into chambers which are sequentially arranged in parallel through at least two heat conducting plates, medium flow paths are arranged in the chambers, and the medium flow paths in the chambers adjacent to the two sides of the heat conducting plates are respectively used for the circulation of a first medium and a second medium, and the first medium and the second medium exchange heat through the heat conducting plates; and the first medium or the second medium is subjected to heat exchange through at least two heat conducting plates in sequence, so that the heat exchange times and the heat exchange area are increased, the heat exchange efficiency is improved, and meanwhile, the volume of the heat exchanger is basically not influenced, so that the heat exchanger can be suitable for smaller appliances.

Further, the cavity between the two heat conducting plates in the heat exchanger comprises the two communicated first subchambers and the second subchambers, the first subchambers and the second subchambers are arranged in parallel with the cavity, and medium flowing in the cavity can flow through the first subchambers and the second subchambers successively, so that heat exchange can be carried out through the heat conducting plates forming the first subchambers and the heat conducting plates forming the second subchambers successively, the contact heat exchange times of the medium and the heat conducting plates are further increased, the heat exchange area and the heat exchange efficiency are improved, the volume influence on the heat exchanger is small while the heat exchange area is improved, and therefore the heat exchanger has the characteristics of high heat exchange efficiency and small volume, and is suitable for small appliances.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 shows a perspective view of a heat exchanger in an embodiment of the present application;

FIG. 2 shows an exploded view of the heat exchanger of FIG. 1;

fig. 3 shows a front view of the heat exchanger of fig. 1;

FIG. 4 shows a cross-sectional view of the heat exchanger of FIG. 3 in the A-A direction;

FIG. 5 shows a B-B cross-sectional view of the heat exchanger of FIG. 3;

FIG. 6 shows a media flow diagram of the heat exchanger of FIG. 3;

FIG. 7 shows an exploded view of a heat exchanger in another embodiment of the application;

fig. 8 shows a front view of the heat exchanger of fig. 7;

FIG. 9 shows a C-C cross-sectional view of the heat exchanger of FIG. 8;

FIG. 10 shows a D-D sectional view of the heat exchanger of FIG. 8;

FIG. 11 shows a media flow diagram of the heat exchanger of FIG. 8;

FIG. 12 shows a perspective view of the shell of the heat exchanger of FIG. 1;

fig. 13 shows a front view of the housing of fig. 12;

fig. 14 shows a top view of the shell of fig. 12;

FIG. 15 shows an E-E cross-sectional view of the shell of FIG. 13;

FIG. 16 shows a perspective view of a fluid heating appliance in an embodiment of the present application;

FIG. 17 shows an exploded view of the fluid heating appliance of FIG. 16;

FIG. 18 shows a right side view of the fluid heating appliance of FIG. 16;

FIG. 19 shows a left side view of the fluid heating appliance of FIG. 16;

FIG. 20 shows a top view of the fluid heating appliance of FIG. 17;

FIG. 21 shows a F-F cross-sectional view of the fluid heating appliance of FIG. 20;

FIG. 22 illustrates a schematic diagram of the operation of the fluid heating appliance of FIG. 16;

FIG. 23 shows a media flow diagram of a heat exchanger of a fluid heating appliance of another embodiment;

reference numerals:

10. a fluid heating appliance; 100. a heat exchanger; q10, chamber; q11, a first subchamber; q12, second subchamber; l10, a first medium flow path; l20, a second medium flow path; 110. a heat conductive plate; 120. a housing; 121. a cover; 1211. a first communication port; 1212. a second communication port; 1213. a case cover fastening part; 122. a shell body; 1221. a shell plate; 1222. a shell wall; 1223. a third communication port; 1224. a fourth communication port; 1225. a subchamber communication port; 1226. a case body fastening part; 130. flow path rib plates; 131. turbulence ribs; 140. a seal ring; 150. a fastener; 200. a heating assembly; 300. a control panel assembly; 400. a water outlet assembly; 410. a water outlet nozzle; 500. a housing assembly; 510. a first housing member; 520. a second housing member; 600. a water pump assembly; 610. a second medium control pump; 620. a first medium control pump; 700. a water tank assembly; 710. a water filling port; 800. a circuit board assembly; 900. a water dividing component.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

The application is described below with reference to specific embodiments in conjunction with the accompanying drawings:

referring to fig. 1 to 15, a heat exchanger 100 according to the present application includes:

at least two heat conductive plates 110; and, a step of, in the first embodiment,

the casing 120 is divided into chambers Q10 arranged in parallel in sequence by the heat-conducting plate 110, a medium flow path is arranged in the chambers Q10, and the chambers Q10 adjacent to the two sides of the heat-conducting plate 110 are respectively used for the circulation of a first medium and a second medium;

Wherein, two ends of the first medium flow path L10 for the first medium to circulate are respectively provided with a first medium flow path inlet and a first medium flow path outlet, and two ends of the second medium flow path L20 for the second medium to circulate are respectively provided with a second medium flow path inlet and a second medium flow path outlet;

The casing 120 of the heat exchanger 100 of this embodiment is divided into chambers Q10 arranged in parallel in sequence by at least two heat-conducting plates 110, medium flow paths are arranged in the chambers Q10, and the medium flow paths in the chambers Q10 adjacent to each other on both sides of the heat-conducting plates 110 are respectively used for the circulation of a first medium and a second medium, so that the first medium and the second medium exchange heat by the heat-conducting plates; and the first medium or the second medium exchanges heat through at least two heat conducting plates 110 successively, so that the heat exchange times and the heat exchange area are increased, the heat exchange efficiency is improved, and meanwhile, the volume of the heat exchanger 100 is basically not influenced, so that the heat exchanger 100 can be suitable for smaller appliances.

As an alternative embodiment, in the heat exchanger 100 of the present embodiment, the chamber Q10 located between the two heat conducting plates 110 includes a first sub-chamber Q11 and a second sub-chamber Q12 that are communicated, and the first sub-chamber Q11 and the second sub-chamber Q12 are juxtaposed with the chamber Q10.

The chamber Q10 between the two heat conducting plates 110 in the heat exchanger 100 of this embodiment is arranged in parallel with the chamber Q10 through the first sub-chamber Q11 and the second sub-chamber Q12 which are arranged in parallel and are communicated, and the medium flowing in the chamber flows through the first sub-chamber and the second sub-chamber successively, so that heat exchange can be performed through the heat conducting plates forming the first sub-chamber and the heat conducting plates forming the second sub-chamber successively, the number of times of contact heat exchange between the medium and the heat conducting plates is further increased, the heat exchange area and the heat exchange efficiency are improved, and the volume influence on the heat exchanger is small while the heat exchange area is improved, so that the heat exchanger has the characteristics of high heat exchange efficiency and small volume, and is suitable for smaller appliances.

As shown in fig. 2 and 6, in this embodiment, the heat exchanger 100 is divided into three chambers Q10 juxtaposed in sequence by the heat transfer plates 110, and the chamber Q10 located in the middle of the heat exchanger 100, that is, the chamber Q10 located between the two heat transfer plates 110, includes a first sub-chamber Q11 and a second sub-chamber Q12 that are communicated. In order to make the chambers Q10 located at two sides of the heat-conducting plate 110 respectively for the first medium to circulate, as shown in fig. 6, the chambers Q10 located at two ends of the heat exchanger 100 are communicated for the first medium to circulate, and the chambers Q10 located in the middle of the heat exchanger 100, that is, the first sub-chamber Q11 and the second sub-chamber Q12 are used for the second medium to circulate, so that not only the first medium exchanges heat through the two heat-conducting plates 110 sequentially, but also the second medium exchanges heat through the two heat-conducting plates 110 sequentially. In comparison with the conventional heat exchanger 100 having a multi-layer structure with two heat-conducting plates 110, the second medium flowing through the intermediate chamber Q10 can only pass through one heat-exchanging flow surface, and the heat exchanging amount is insufficient. In this embodiment, the first medium and the second medium pass through the two heat-conducting plates 110 respectively, that is, pass through the two heat-exchanging flow surfaces, so that the heat exchanging amount is greatly increased, and the heat exchanging efficiency is improved.

As shown in fig. 7 and 11, in this embodiment, the heat exchanger 100 is divided into four chambers Q10 juxtaposed in order by the heat conductive plates 110, and two chambers Q10 located in the middle of the heat exchanger 100, that is, the chamber Q10 located between the two heat conductive plates 110, include a first sub-chamber Q11 and a second sub-chamber Q12 that are communicated. In order to make the chambers Q10 on both sides of the heat-conducting plate 110 respectively for the first medium and the second medium to circulate, as shown in fig. 11, the chamber Q10 on the first end of the heat exchanger 100 (the first chamber Q10 on the left in the figure) is communicated with the chamber Q10 (the third chamber Q10 on the left in the figure) provided with the first sub-chamber Q11 and the second sub-chamber Q12 at intervals for the first medium to circulate; the chamber Q10 (the fourth chamber Q10 from the left in the figure) at the second end of the heat exchanger 100 is communicated with the chamber Q10 (the second chamber Q10 from the left in the figure) which is provided with the first sub-chamber Q11 and the second sub-chamber Q12 at intervals, and is used for circulating a second medium; the first medium and the second medium exchange heat through the three heat conducting plates 110 respectively, namely, the heat exchange quantity is greatly increased through the three heat exchange flow surfaces, and the heat exchange efficiency is improved.

In other embodiments, the heat exchange area of the heat exchanger 100 may be doubled by providing more heat conducting plates 110 to divide the housing 120 into more chambers Q10 to further exchange heat through the heat conducting plates 110.

The casing 120 of the heat exchanger 100 is divided into chambers Q10 arranged in parallel in sequence by at least two heat-conducting plates 110, and the chambers Q10 adjacent to each other on both sides of the heat-conducting plates 110 are respectively used for the circulation of a first medium and a second medium, and the first medium and the second medium exchange heat by the heat-conducting plates 110; the chamber Q10 between the two heat conducting plates 110 includes two communicating first sub-chambers Q11 and second sub-chambers Q12, where the first sub-chambers Q11 and the second sub-chambers Q12 are parallel to the chamber Q10, and the medium flowing in the chamber Q10 flows through the first sub-chambers Q11 and the second sub-chambers Q12 sequentially, so that heat exchange can be performed through the heat conducting plates 110 forming the first sub-chambers Q11 and the second sub-chambers Q12 sequentially, so that the number of times of heat exchange between the medium and the heat conducting plates 110 is increased, the heat exchange area is increased, the heat exchange efficiency is further increased, and the volume of the heat exchanger 100 is basically not affected while the heat exchange area is increased, so that the heat exchanger 100 is suitable for use in smaller appliances.

As an alternative implementation manner, in the heat exchanger 100 of this embodiment, a first sub-medium flow path is provided in the first sub-chamber Q11, a second sub-medium flow path is provided in the second sub-chamber Q12, and the first sub-medium flow path and the second sub-medium flow path are communicated to form a medium flow path through which the first medium or the second medium flows. That is, in this embodiment, when the chamber Q10 including the first sub-chamber Q11 and the second sub-chamber Q12 is used for the first medium to circulate, the first medium will flow through the first sub-medium flow path and the second sub-medium flow path sequentially, that is, the first medium will exchange heat through the two heat conductive plates 100 sequentially in the same chamber Q10, so that the contact frequency and heat exchange area between the first medium and the heat conductive plates 110 in the same chamber Q10 are greatly increased, and the heat exchange efficiency can be further improved.

Further, the heat exchanger 100 can be expanded by adding the heat-conducting plate 110, or can be expanded by connecting a plurality of heat exchangers 100 in series, i.e. can be easily expanded according to heat exchange requirements, and can be suitable for various heat exchange requirements.

As an alternative embodiment, the housing 120 includes:

two cover caps 121 respectively covering the two heat conductive plates 110 to form two chambers Q10 with the two heat conductive plates 110 respectively;

at least one housing 122 disposed between two adjacent heat conductive plates 110, and forming a chamber Q10 including a first sub-chamber Q11 and a second sub-chamber Q12 with the adjacent two heat conductive plates 110.

In this embodiment, the case 120 is composed of the case cover 121 and the case body 122, and it is possible to facilitate the placement of the heat conductive plate 110 in the case 120, thereby dividing the case 120 into the chambers Q10 that are juxtaposed in order.

As shown in fig. 2 and 4, in this embodiment, the housing 120 includes two housing covers 121 and one housing body 122, and the heat exchanger 100 is formed in such a manner that the housing covers 121, the heat conducting plate 110, the housing body 122, the heat conducting plate 110, and the housing covers 121 are sequentially disposed, and one chamber Q10, the first sub-chamber Q11, or the second sub-chamber Q1 is formed between the housing covers 121 and the heat conducting plate 110, between the heat conducting plate 110 and the housing body 122, between the housing body 122 and the heat conducting plate 110, and between the heat conducting plate 110 and the housing cover 121, respectively.

In this embodiment, as shown in fig. 4, adjacent chambers Q10 exchange heat with the heat conductive plate 110 therebetween, and chambers Q10 including the first sub-chamber Q10 and the second sub-chamber Q12, which are composed of the housing 122 and the adjacent two heat conductive plates 110, respectively exchange heat with the chambers Q10 adjacent to both sides thereof, through the heat conductive plate 110. For example, the chamber Q10 from left to right in fig. 4 is configured to communicate the first medium, the second medium, and the first medium in sequence, that is, the chambers Q10 located at both ends of the heat exchanger 100 are configured to communicate the first medium, and the first sub-chamber Q11 and the second sub-chamber Q12 of the chamber Q10 located in the middle of the heat exchanger 100 are configured to communicate the second medium. During the heat exchange process, the first medium flowing through the chamber Q10 at the first end of the heat exchanger 100 exchanges heat with the second medium flowing through the first subchamber Q11, and then enters the chamber Q10 at the second end of the heat exchanger 100 to exchange heat with the second medium flowing through the second subchamber Q12; accordingly, the second medium flowing through the second sub-chamber Q12 exchanges heat with the first medium flowing through the chamber Q10 at the second end of the heat exchanger 100, and then enters the first sub-chamber Q11 to exchange heat with the medium flowing through the chamber Q10 at the first end of the heat exchanger 100; in the whole heat exchange process, the first medium and the second medium are respectively in contact with the two heat conducting plates 110 for heat exchange, namely respectively pass through the two heat exchange flow surfaces.

As shown in fig. 7 and 9, in this embodiment, the housing 120 includes two housing covers 121 and two housing bodies 122, and one chamber Q10, a first sub-chamber Q11, or a second sub-chamber Q101 is formed between the housing cover 121 and the heat conductive plate 110, between the heat conductive plate 110 and the housing body 122, between the housing body 122 and the heat conductive plate 110, and between the heat conductive plate 110 and the housing cover 121, respectively, in such a manner that the housing cover 121, the heat conductive plate 110, the housing body 122, the heat conductive plate 110, and the housing cover 121 are sequentially disposed. For example, the chamber Q10 from left to right in fig. 9 is sequentially used for circulating a first medium, a second medium, the first medium and the second medium, that is, the first chamber Q10 from left to right in fig. 9 is communicated with the third chamber Q10 from left for circulating the first medium, the second chamber Q10 from left to right is communicated with the fourth chamber Q10 from left for circulating the second medium, and the second chamber Q10 from left and the third chamber Q10 from left respectively include a first sub-chamber Q11 and a second sub-chamber Q12. In the heat exchange process, a first medium flowing through a first chamber Q10 in the left number exchanges heat with a second medium flowing through a first sub-chamber Q11 of a second chamber Q10 in the left number, then enters a first sub-chamber Q11 of a third chamber Q10 in the left number to exchange heat with a second medium flowing through a second sub-chamber Q12 of a second chamber Q10 in the left number, and then enters a second sub-chamber Q12 of the third chamber Q10 in the left number to exchange heat with a second medium flowing through a fourth chamber Q10 in the left number; correspondingly, the second medium flowing through the fourth left chamber Q10 exchanges heat with the first medium flowing through the second sub-chamber Q12 of the third left chamber Q10, then enters the second sub-chamber Q12 of the second left chamber Q10 to exchange heat with the first medium flowing through the first sub-chamber Q11 of the third left chamber Q10, and then enters the first sub-chamber Q11 of the second left chamber Q10 to exchange heat with the first medium flowing through the first left chamber Q10; in the whole heat exchange process, the first medium and the second medium are respectively in contact with and exchange heat with the three heat conducting plates 110, namely respectively pass through three heat exchange flow surfaces.

As an alternative embodiment, as shown in fig. 2 and 7, a flow path rib 130 is disposed on one side of the cover 121 adjacent to the heat conducting plate 110, and the cover 121, the heat conducting plate 110 adjacent to the cover 121, and the flow path rib 130 form a medium flow path in the chamber Q10; the medium flow path is used for circulating the first medium or the second medium so as to enable the first medium or the second medium to exchange heat through a fixed route.

As an alternative embodiment, as shown in fig. 12 to 15, the housing 122 includes a housing plate 1221 and a housing wall 1222 surrounding the housing plate 122), both sides of the housing plate 1221 adjacent to the heat-conductive plate 110 are respectively provided with a flow path rib 130, and the housing 122, the housing wall 1222, the heat-conductive plate 110 located at both sides of the housing 122, and the flow path rib 130 form a first sub-medium flow path and a second sub-medium flow path in the first sub-chamber Q11 and the second sub-chamber Q12, respectively.

In the above-described embodiment, one sub-medium flow path is formed on each side of the shell plate 1221, and the sub-medium flow paths communicate with each other at one end of the shell plate 1221. When the cover 121, the heat conductive plate 110, the housing 122, the heat conductive plate 110, and the cover 121 are sequentially sealed and connected, an independent medium flow path can be formed in each chamber Q10, and mixing of different media can be prevented. Through the structural arrangement of the shell 122, at least two groups of heat exchange medium flow paths are formed in the heat exchanger 100, and compared with the traditional medium flow paths with only one group of heat exchange medium flow paths, the heat exchange area is doubled, and the heat exchange efficiency can be greatly improved.

As shown in fig. 2, in this embodiment, a flow path rib 130 is provided on a side of the cover 121 adjacent to the heat conducting plate 110, and after the cover 121 and the heat conducting plate 110 are fastened together, a medium flow path is formed in the chamber Q10 by the cover 121, the adjacent heat conducting plate 110 and the flow path rib 130, so that the first medium or the second medium flows in the medium flow path. Accordingly, as shown in fig. 13, the flow path rib plates 130 are respectively provided on both sides of the shell plate 1221 adjacent to the heat-conducting plate 110, and when the shell 122 and the heat-conducting plate 110 are combined together, sub-medium flow paths are formed in the first sub-chamber Q11 and the second sub-chamber Q12 by the heat-conducting plate 110 and the flow path rib plates 130 on both sides of the shell 122, respectively, so that the first medium or the second medium can flow in the sub-medium flow paths. Preferably, the flow path rib plates 130 are arranged on the shell cover 121/the shell plate 1221 in parallel, and one end of each flow path rib plate 130 is provided with a notch with the edge of the shell cover 121/the shell plate 1221 so that the medium flow paths/sub-medium flow paths on two sides of the flow path rib plates 130 are communicated; further, the two adjacent flow path rib plates 130 are staggered with the notches at the edges of the shell cover 121/the shell plate 1221, so that a zigzag-shaped medium flow path/sub-medium flow path which is bent back and forth is formed, and the first medium or the second medium flows in the chamber Q10 along the zigzag-shaped medium flow path/sub-medium flow path and exchanges heat through the heat conducting plate 110.

As an alternative embodiment, a plurality of turbulence ribs 131 are arranged in the medium flow path, so that the medium is disturbed when flowing in the medium flow path, thereby generating local turbulence, improving the turbulence of the medium, and improving the convective heat transfer coefficient between the medium and the heat conducting plate 110; and the turbulence ribs 131 can disturb the medium, so that the internal temperature of the medium is more balanced, and the heat exchange effect with the heat conducting plate 110 is more ensured. Alternatively, the spoiler 131 may be disposed on the flow path rib 130, the cover 121/the shell plate 1221, or the heat conductive plate 110, respectively or simultaneously.

In the above embodiment, in order to communicate the sub-medium flow paths in the first sub-chamber Q11 and the sub-medium flow paths in the second sub-chamber Q12 to form a medium flow path, as an alternative embodiment, a sub-chamber communication port 1225 may be opened in the shell plate 1221 or the shell wall 1222 of the shell 122, for communicating the sub-medium flow paths on both sides of the shell plate 1221. For example, the case wall 1222 is provided with sub-chamber communication ports 1225 corresponding to the two sub-medium flow paths, respectively, and the two sub-medium flow paths are communicated after being connected by a pipe. Preferably, as shown in fig. 13, a subchamber communication port 1225 is formed at one end of the subchamber flow path on the shell plate 1221 to communicate with two subchamber flow paths, in this embodiment, the subchamber communication port 1225 is formed on the shell plate 1221, and the subchamber communication port 1225 is not required to be formed on the outer wall and connected through a pipe, so that the structure is simpler, and the leakage of fluid can be effectively avoided.

As an alternative embodiment, not only the media flow paths extend over the heat conducting plate 110, but also the sub-media flow paths extend over the adjacent heat conducting plate 110. In the above embodiment, the medium flow paths and the sub-medium flow paths divided by the flow path rib plate 130 are preferably provided in the case cover 121 or the case plate 1221 in a zigzag shape, so that the medium flow paths and the sub-medium flow paths can be spread over the adjacent heat conductive plates 110, and the heat exchange areas of the medium flow paths and the sub-medium flow paths on the heat conductive plates 110 can be maximized.

As an alternative embodiment, each chamber Q10 is provided with communication ports at both ends of the medium flow path, and the medium flow paths of the spaced chambers Q10 are communicated through the communication ports to form a first medium flow path L10 through which the first medium flows and a second medium flow path L20 through which the second medium flows, respectively. Optionally, the communication ports of the chambers Q10 located at two ends of the heat exchanger 100 are disposed on the shell cover 121, the communication ports of the chambers Q10 located in the middle of the heat exchanger 100 are disposed on the shell bodies 122, the corresponding number of the shell bodies 121 is set according to the number of the heat-conducting plates 110, the chambers formed between the shell bodies and the shell cover, and the chambers formed between the shell bodies are respectively communicated with the spaced chambers Q10 through the communication ports, so that the medium flow paths in the spaced chambers Q10 are communicated to form the first medium flow path L10 and the second medium flow path L20.

As an alternative embodiment, the cover 121 is provided with a first communication port 1211 and a second communication port 1212 at both ends of the medium flow path; the case wall 1222 is provided with a third communication port 1223 and a fourth communication port 1224 at both ends of the medium flow path;

the medium flow paths of the partitioned chambers Q10 communicate with each other through one or more of the first communication port 1211, the second communication port 1212, the third communication port 1223, and the fourth communication port 1224 to form a first medium flow path L10 through which the first medium flows, and the medium flow paths of the remaining chambers Q10 communicate with each other through one or more of the first communication port 1211, the second communication port 1212, the third communication port 1223, and the fourth communication port 1224 to form a second medium flow path L20 through which the second medium flows.

In this embodiment, the partitioned chamber Q10 is communicated with the third communication port 1223 and the fourth communication port 1224 on the case wall 1222 through the first communication port 1211 and the second communication port 1212 on the case cover 121, even if the medium flow path of the partitioned chamber Q10 is communicated; thereby, the adjacent chambers Q10 can be respectively supplied with different media to exchange heat through the heat transfer plate 110 between the adjacent chambers Q10. The remaining first communication port 1211, second communication port 1212, third communication port 1223, and fourth communication port 1224 that are not used for communication with the partition chamber Q10 may be respectively as a first medium flow path inlet, a first medium flow path outlet, a second medium flow path inlet, and a second medium flow path outlet.

As an alternative embodiment, the heat exchanger 100 includes two heat conductive plates 110, and the medium flow paths of the chambers Q10 at both ends of the housing 120 are communicated through the first communication port 1211 to form a first medium flow path L10 for the first medium to circulate; the medium flow path of the chamber Q10 located in the middle of the housing 120 forms a second medium flow path L20 for the second medium to circulate. In this embodiment, as shown in fig. 1 and 2, the cover 121, the heat conductive plate 110, the housing body 122, the heat conductive plate 110, and the cover 121 of the heat exchanger 100 are sequentially stacked to form the corresponding chamber Q10. Wherein, the second communication port 1212 on the cover 121 on the left side in the figure is communicated with the second communication port 1212 on the cover 121 on the right side in the figure through a pipe, so that the chambers Q10 at two ends of the heat exchanger 100 are communicated for the circulation of the first medium, and the chamber Q10 comprising the first sub-chamber Q11 and the second sub-chamber Q12 in the middle of the heat exchanger 100 is used for the circulation of the second medium; the first communication port 1211 on the cover 121 on the left side in the drawing and the first communication port 1211 on the cover 121 on the right side in the drawing serve as a first medium flow path inlet and a first medium flow path outlet, respectively, and the third communication port 1223 and the fourth communication port 1224 on the intermediate housing 122 serve as a second medium flow path inlet and a second medium flow path outlet, respectively, so that the heat exchanger 100 can perform heat exchange in the medium flow direction as shown in fig. 6.

As an alternative embodiment, the heat exchanger 100 includes three heat conductive plates 110;

the chamber Q10 at one end of the housing 120 communicates with the medium flow paths of the partitioned chamber Q10 through the first communication port 1211 and the third communication port 1223 to form a first medium flow path L10 through which the first medium flows;

the chamber Q10 at the other end of the housing 120 communicates with the medium flow paths of the partitioned chamber Q10 through the second communication port 1212 and the fourth communication port 1224 to form a second medium flow path L20 through which the second medium flows.

In this embodiment, as shown in fig. 7 and 9, the cover 121, the heat conductive plate 110, the housing body 122, the heat conductive plate 110, and the cover 121 of the heat exchanger 100 are sequentially stacked to form the corresponding chamber Q10. As shown in fig. 9, the second communication port 1212 on the cover 121 on the left side in the drawing is communicated with the third communication port 1223 on the second housing 122 on the left side through a pipe, that is, the first chamber Q10 on the left side in the drawing is communicated with the third chamber Q10 on the left side for the circulation of the first medium; the second communication port 1212 on the cover 121 on the right side in the drawing communicates with the third communication port 1223 on the first left-hand housing 122, i.e., the second chamber Q10 on the left-hand side in the drawing communicates with the fourth chamber Q10 on the left-hand side for the second medium to circulate, i.e., the chambers Q10 are realized at communication intervals through any of the first communication port 1211, the second communication port 1212, the third communication port 1223 and the fourth communication port 1224. The first communication port 1211 on the cover 121 on the left side in the drawing serves as a first medium flow path inlet, and the fourth communication port 1224 on the second housing body 122 on the left side serves as a first medium flow path outlet; the first communication port 1211 on the cover 121 on the right in the drawing serves as a second medium flow path inlet, and the fourth communication port 1224 on the first housing 122 on the left in the drawing serves as a second medium flow path outlet; thereby enabling the heat exchanger 100 to exchange heat in the medium flow direction as shown in fig. 11.

As an alternative embodiment, the heat exchanger 100 performs heat exchange by reversing the flow direction of the first medium and the second medium on both sides of the heat conductive plate 110. So that there is a large temperature difference between the first medium and the second medium at both sides of the heat conductive plate 110, facilitating heat transfer between the first medium and the second medium.

As an alternative embodiment, the heat conductive plate 110 is a wave-shaped heat conductive plate 110. In this embodiment, the heat conducting plate 110 has a wave shape, which can increase the area of the heat conducting plate 110, that is, the heat exchanging area between the first medium and the second medium, and further improve the heat exchanging efficiency of the heat exchanger 100.

In any of the above embodiments, the cover 121 and the shell 122 of the heat exchanger 100 may be tightly connected by hot plate welding, that is, after the heat conducting plate 110 is clamped between the cover 121 and the shell 122, the peripheries of the cover 121 and the shell 122 are tightly connected and fixed together by hot plate welding.

As a preferred embodiment, the heat exchanger 100 further comprises fasteners 150, and the cover 121 and the body 122 are connected by a plurality of fasteners 150. As shown in fig. 1, 2 and 7, a plurality of cover fastening portions 1213 are provided around the cover 121, and a plurality of cover fastening portions 1226 are provided around the cover 122 at positions corresponding to the cover fastening portions 1213. When the heat exchanger 100 is assembled, the cover 121, the heat conducting plate 110, the shell 122, the heat conducting plate 110 and the cover 121 are stacked in order, the cover fastening portion 1213 and the shell fastening portion 1226 are aligned, and then the cover 121, the shell 122 and the cover 121 are tightly connected and fixed together by the fastening member 150, and the heat conducting plate 110 located between the cover 121 and the shell 122 is pressed and fixed by the two. The fastener 150 may be a screw, a screw or a buckle, and the shell cover 121 and the shell 122 are tightly pressed and fixed together through the screw, the screw or the buckle.

As an alternative embodiment, the heat exchanger 100 further includes a sealing ring 140, and the sealing ring 140 is sleeved on the heat conducting plate 110 or disposed on two sides of the heat conducting plate 110. As shown in fig. 2 and 4, in this embodiment, the sealing ring 140 is sleeved on the heat conducting plate 110, and when the heat conducting plate 110 is sandwiched between the cover 121 and the housing body 122, the sealing ring 140 and the cover 121 and the housing body 122 form a seal between the cover 121 and the heat conducting plate 110 and between the housing body 122 and the heat conducting plate 110 by the contact sealing action between the sealing ring and the cover 121 and the housing body 122, so that leakage of the medium is avoided. Preferably, when the sealing ring 140 is sleeved on the heat conducting plate 110, the sealing ring 140 is a whole circle of sealing ring 140 with a groove on the inner surface, and the heat conducting plate 110 is installed and clamped into the groove during assembly, so that the loosening during assembly can be effectively prevented, that is, the sealing ring 140 is prevented from being shifted and loosened between the shell cover 121 and the heat conducting plate 110 or between the shell 122 and the heat conducting plate 110, and the sealing performance of the heat exchanger 100 is prevented from being reduced or failing.

In any of the above embodiments, the shell plate 1221 of the shell 122 is made of a material with poor thermal conductivity, for example, the shell plate 1221 may be made by micro-foaming injection molding, so as to reduce the thermal conductivity of the shell plate 1221, avoid internal consumption caused by heat exchange between the same medium in the first sub-chamber Q11 and the second sub-chamber Q12 located at both sides of the shell plate 1221, that is, avoid heat exchange between the hot end and the cold end in the chamber Q10 including the first sub-chamber Q11 and the second sub-chamber Q12, and further reduce the efficiency of heat exchange between the medium in the adjacent chamber Q10 through the heat conducting plate 110 due to the heat exchange between the medium in the first sub-chamber Q11 and the second sub-chamber Q12 affecting the temperature difference between the medium and the other medium in the adjacent chamber Q10.

In any of the above embodiments, the heat conductive plate 110 is made of a material having good heat conductivity, for example, a metal material such as stainless steel or aluminum. These metallic materials have not only good thermal conductivity and corrosion resistance but also low cost.

The second broad aspect of the present application also contemplates a fluid heating appliance 10, as shown in fig. 16-23, the fluid heating appliance 10 comprising at least one heat exchanger 100, heating assembly 200 and water outlet assembly 400 described above;

the heating assembly 200 is communicated with a water source through a first medium flow path, and the heating assembly 200 is communicated with the water outlet assembly 400 through a second medium flow path.

Further preferably, the flow direction of the first medium in the first medium flow path is opposite to the flow direction of the second medium in the second medium flow path. By reversing the flow direction of the first medium and the second medium, a larger temperature difference can be provided between the first medium and the second medium at both sides of the heat conducting plate 110, so that heat can be conveniently transferred between the first medium and the second medium.

Further, when the heating apparatus includes two or more heat exchangers 100, the first medium flow path L10 for the first medium to circulate in each heat exchanger 100 is sequentially connected in series or in parallel; the second medium flow paths L10 for circulating the second medium are sequentially connected in series or in parallel. The heat conducting plates through which the first medium and the second medium flow can be multiplied through the serial connection or the parallel connection of the first medium flow paths L10 and the serial connection or the parallel connection of the second medium flow paths L20, so that the heat exchange flow surface is further increased, the heat exchange efficiency is further improved, the temperature transmission process is accelerated, and the high-temperature medium is quickly reduced to the proper temperature.

Because the fluid heating device 10 provided by the present application includes the heat exchanger 100 according to the above technical solution, the fluid heating device 10 provided by the present application has all the beneficial effects of the heat exchanger 100, and will not be described herein.

As an alternative embodiment, the second medium is boiling water. In this embodiment, no matter the second medium is boiled water at 100 ℃ which is not cooled by the heat exchanger 20, or warm boiled water at a predetermined temperature by the heat exchange and the cooling of the heat exchanger 20, the second medium finally provided to the user by the water outlet assembly 40 is boiled water heated to boil, so that microorganisms such as bacteria and viruses in the water can be effectively killed, and the water safety is improved.

In the above embodiment, the low-temperature water in the water source is the first medium, the low-temperature water enters the heating assembly through the heat exchange flow path of the heat exchanger to be heated, when the low-temperature water is heated into boiling water by the heating assembly 200 to become the second medium, the boiling water enters the heat exchange flow path of the heat exchanger 100 to exchange heat with the low-temperature water entering the heat exchanger from the water source, that is, the low-temperature water (i.e. the first medium) entering the heating assembly 200 exchanges heat with the boiling water (i.e. the second medium) heated in the heating assembly 200 in the heat exchanger 100, so that on one hand, the temperature of the boiling water heated in the heating assembly 200 is quickly reduced to meet the temperature requirement of the low-temperature boiled water, and on the other hand, the low-temperature water to be heated in the heating assembly 200 absorbs the boiling water to be heated, thereby effectively utilizing heat, and achieving the purpose of saving energy.

In the above embodiments, the fluid heating appliance 10 includes an instant heating kettle, a hot water kettle, a thermos bottle, a water dispenser, a water purifier, or the like, which needs to heat a fluid or cool down after heating.

As an alternative embodiment, fluid heating appliance 10 further includes a water diversion assembly 900, water diversion assembly 900 communicating with heating assembly 200 and the water source, water diversion assembly 900 also communicating with heating assembly 200 and heat exchanger 100 for chamber Q10 through which the first medium flows. The water diversion assembly 900 is used to distribute the ratio between the medium to be heated (i.e., the first medium) entering the heat exchanger 100 and the medium to be heated directly entering the heating assembly 200 by controlling the amount of the medium to be heated (i.e., the first medium) entering the heat exchanger 100 to control the final temperature of the medium heated in the heating assembly 200 (i.e., the second medium), i.e., the final temperature of the heated medium (the second medium) entering the water outlet assembly 400. In this embodiment, if the target temperature of the heated medium in the fluid heating device is 100 ℃, the water diversion assembly 900 can be controlled so that the medium to be heated directly enters the heating assembly 200 without flowing through the heat exchanger, so as to avoid heat exchange with the heated medium.

As a further alternative embodiment, the heating assembly 200 is also in communication with the water outlet assembly 400 via a conduit, and it is further preferred to provide a valve assembly such as a solenoid valve on the conduit. In this embodiment, if the target temperature of the heated medium of the fluid heating device is 100 ℃, the water diversion assembly 900 and the valve assemblies such as the electromagnetic valve can be controlled to enable the boiling water with the temperature of 100 ℃ heated by the heating assembly 200 to directly enter the water outlet assembly 400 without heat exchange and cooling through the heat exchanger.

The fluid heating appliance 10 of the present application will be further described below by taking a hot water kettle as an example. Referring to fig. 16, 17 and 21, as an alternative embodiment, the fluid heating apparatus 10 of the above embodiment includes: heat exchanger 100, heating assembly 200, control board assembly 300, water outlet assembly 400, housing assembly 500, water pump assembly 600, water tank assembly 700, circuit board assembly 800, and water diversion assembly 900.

Wherein the housing assembly 500 comprises a first housing part 510 and a second housing part 520, the first housing part 510 comprising a bottom and a side wall, the second housing part 520 comprising a bottom cover plate and a side wall. The side walls of the first and second housings form an accommodating space for accommodating the heat exchanger 100, the heating assembly 200, the control board assembly 300, the water outlet assembly 400, the housing assembly 500, the water pump assembly 600, the circuit board assembly 800 and the water diversion assembly 900 after the first and second housings are combined, so that the components are hidden in the accommodating space; the bottom of the first housing and the bottom cover plate of the second housing form a platform and a bottom waterway for placing the water tank assembly 700 after the first housing and the second housing are combined, and the water tank assembly 700 is detachably disposed on the platform.

In this embodiment, the water tank assembly 700 is used to hold water to provide water supply to a warm water kettle at any time. The bottom of the water tank assembly 700 is provided with a water tank water inlet and outlet, the corresponding position of the bottom cover plate of the second shell is provided with a water tank communication port, the water tank water inlet and outlet is provided with an elastic sealing device, when the water tank assembly 700 is placed on the bottom cover plate of the second shell, the water tank water inlet and outlet of the water tank assembly 700 is communicated with a bottom water channel through the water tank communication port, and when the water tank assembly 700 is taken out from the bottom cover plate of the second shell, the elastic sealing device can automatically pop up to seal the water tank water inlet and outlet. Optionally, a water filling port 710 is provided at a proper position at the bottom of the first housing, for communicating with a water source.

In this embodiment, the heating assembly 200 has a high heating efficiency, so that the first medium can be instantaneously heated into boiling water when flowing through the heating assembly 200, thereby satisfying the characteristic of instantaneity of the fluid heating device.

As shown in fig. 22, the water tank assembly 700 is communicated with the first medium passage of the heat exchanger 100 through a pipe, and a first medium control pump 620 is provided between the water tank assembly 700 and the heat exchanger 100 for controlling the flow rate of medium into the first medium passage of the heat exchanger 100; the water tank assembly 700 is also respectively communicated with the outlet of the first medium channel of the heat exchanger 100 and the inlet of the heating assembly 200 through the water diversion assembly 900, and the flow from the water tank assembly 700 and the first medium channel of the heat exchanger 100 into the heating assembly 200 is distributed through the water diversion assembly 900; a second medium control pump 610 (to be heated) is arranged between the water diversion component 900 and the heating component 200 and is used for controlling the flow of the medium entering the heating component 200, the second medium is heated by the heating component 200 to be boiled and then enters a second medium channel of the heat exchanger 100, and the second medium is subjected to heat exchange and cooling with the first medium; the outlet of the second medium channel of the heat exchanger 100 is communicated with the water outlet assembly 400, namely, the second medium is discharged through the water outlet assembly 400 after being cooled for use, namely, the second medium can be directly drunk and can also be used for brewing milk powder and the like. In this embodiment, temperature detectors are respectively disposed at positions of the pipes, etc. where the temperature needs to be monitored, for detecting the temperatures of the first medium and the second medium in real time, so as to adjust the flow rates of the first medium and the second medium through the first medium control pump 620 and the second medium control pump 610 at any time, thereby controlling the water temperature finally discharged through the water outlet assembly 400. For example, in this embodiment, temperature sensors may be provided at the communication between the water diversion module and the heating assembly 200, the outlet of the heating assembly 200, and between the heat exchanger 100 and the water outlet assembly 400, respectively.

In this embodiment, the control board assembly 300 and the circuit board assembly 800 are respectively connected with the heating assembly 200, the water pump assembly 600, the water diversion assembly 900, the water outlet assembly 400 and the temperature sensor signal for controlling the operation of each assembly. Preferably, the control panel assembly 300 is provided with a man-machine interface, such as a button, a display screen or a touch screen, etc., provided on the housing assembly 500 for starting the hot water kettle, setting the water outlet temperature of the second medium, etc., and the control panel assembly 300 and the circuit board assembly 800 control the heating assembly 200, the water pump assembly 600, the water diversion assembly 900, etc., according to control signals obtained through the man-machine interface, so that the second medium discharged from the water outlet assembly 400 satisfies the set temperature.

In this embodiment, the first housing member 510 is provided with a sidewall cavity protruding with respect to other portions of the housing assembly 500 for accommodating the water outlet assembly 400, and a water outlet is provided at the bottom of the sidewall cavity for passing through the water outlet nozzle 410 of the water outlet assembly 400. The sidewall cavity protrudes from the rest of the housing assembly 500, so that the lower part thereof is suspended to hold drinking appliances such as a cup. Correspondingly, for human-computer interaction convenience, the temperature boiling kettle is convenient to control, and the human-computer interaction interface of the control assembly is arranged on the outer side of the side wall cavity so as to facilitate observation and control.

In the present application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

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" indicate orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplify the description, and do not indicate or imply that the devices or elements 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.

It should be noted that all the directional indicators in the embodiments of the present application are only used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture, and if the specific posture is changed, the directional indicators are correspondingly changed.

In the present application, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; 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.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," 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 present application. In this specification, schematic representations of the above terms are not necessarily directed 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. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.

In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. A heat exchanger, the heat exchanger comprising:

at least two heat conductive plates; and, a step of, in the first embodiment,

the shell is divided into chambers which are arranged in parallel in sequence through the heat conducting plate, a medium flow path is arranged in the chambers, and the medium flow paths which are positioned adjacent to the two sides of the heat conducting plate are respectively used for the circulation of a first medium and a second medium;

2. The heat exchanger of claim 1, wherein the chamber between the two heat transfer plates includes first and second communicating subchambers, the first and second subchambers being juxtaposed with the chamber.

3. The heat exchanger of claim 2, wherein a first sub-medium flow path is provided in the first sub-chamber, and a second sub-medium flow path is provided in the second sub-chamber, and the first sub-medium flow path communicates with the second sub-medium flow path to form the medium flow path through which the first medium or the second medium flows.

4. The heat exchanger of claim 2, wherein the housing comprises:

5. The heat exchanger of claim 4, wherein a side of the cover adjacent to the heat transfer plate is provided with flow path webs, and the cover, the heat transfer plate adjacent to the cover, and the flow path webs form the media flow path within the chamber.

6. The heat exchanger of claim 5, wherein the shell comprises a shell plate and shell walls surrounding the shell plate, wherein flow path rib plates are respectively arranged on two sides of the shell plate adjacent to the heat conducting plate, and the shell, the shell walls, the heat conducting plates on two sides of the shell, and the flow path rib plates form the first sub-medium flow path and the second sub-medium flow path in the first sub-chamber and the second sub-chamber respectively.

7. The heat exchanger of claim 6, wherein a subchamber communication port is provided in the shell plate or the shell wall, and the first subchamber medium flow passage in the first subchamber is communicated with the second subchamber medium flow passage in the second subchamber through the subchamber communication port to form the medium flow passage.

8. The heat exchanger of claim 7, wherein the media flow path extends over adjacent ones of the thermally conductive plates; and, the sub-medium flow path extends over the adjacent heat conductive plate.

9. The heat exchanger of claim 1, wherein each of the chambers is provided with a communication port at both ends of the medium flow path, respectively, and the medium flow paths of the chambers at intervals communicate through the communication ports to form the first medium flow path through which the first medium flows and the second medium flow path through which the second medium flows, respectively.

10. The heat exchanger of claim 1, wherein the heat transfer plate is a wave-shaped heat transfer plate.

11. The heat exchanger of any one of claims 4 to 10, further comprising fasteners, wherein the shell cover and the shell body are connected by a plurality of fasteners.

12. The heat exchanger of claim 11, further comprising sealing rings that are sleeved on or disposed on both sides of the heat conductive plate.

13. A fluid heating appliance comprising at least one heat exchanger as claimed in any one of claims 1 to 12, a heating assembly and a water outlet assembly;

the heating assembly is communicated with a water source through the first medium flow path, and the heating assembly is communicated with the water outlet assembly through the second medium flow path.

14. The fluid heating appliance of claim 13, wherein the flow direction of said first medium in said first medium flow path is opposite to the flow direction of said second medium in said second medium flow path.

15. The fluid heating appliance of claim 13, wherein when said heating appliance comprises more than two of said heat exchangers, said first media flow paths in each of said heat exchangers are sequentially connected in series or in parallel; and the second medium flow paths in each heat exchanger are sequentially connected in series or in parallel.

16. The fluid heating appliance of claim 13, further comprising a water diversion assembly in communication with said heating assembly and said water source, said water diversion assembly further in communication with said heating assembly and said heat exchanger for said chamber through which said first medium flows.

17. The fluid heating appliance of claim 16, wherein said heating assembly is further in communication with said water outlet assembly via a conduit.

18. A fluid heating appliance according to any one of claims 13 to 17 wherein the second medium is boiling water.

19. A fluid heating appliance as claimed in claim 18 wherein said fluid heating appliance is a hot water kettle.