Heat exchanger

Abstract

The utility model belongs to the field of heating, and provides a heat exchanger which comprises a heat exchanger shell and a heat exchange assembly, the heat exchanger shell is used for containing the heat exchange assembly and a seal in the direction parallel to fins, the heat exchange assembly comprises at least three fins, the fins are arranged in parallel, and the fins are arranged in parallel. Every two adjacent fins form a group from the first fin, and each group of fins are connected in a closed manner on two longitudinal or transverse edges to form a longitudinal or transverse through channel; every two adjacent fins form a group from the second fin, and the fins in each group are connected in a closed manner on two transverse or longitudinal edges to form transverse or longitudinal through channels; a right-angle partition plate is arranged at the junction of the transverse penetrating channel and the longitudinal penetrating channel and used for isolating the transverse penetrating channel from the longitudinal penetrating channel. The effects of increasing the contact area of a heat source and a heat collection medium, reducing the conduction distance of heat in the heat collection medium, increasing the contact area of a heat output surface and improving the heat conduction efficiency of the heat exchange assembly are achieved.

Description

Technical Field

[0001] The utility model relates to the field of heating, and in particular to a heat exchanger. Background Art

[0002] The combustion heater in the prior art mainly generates heat by burning fuel. The combustion heater is a device used for cold protection and heating, which is light and flexible. It is widely used in industrial and household fields. The combustion heater will produce smoke during the process of fuel combustion heating. The smoke is generally discharged to the outside through the chimney. However, a large amount of heat will be taken away during the smoke exhaust process, which leads to a low utilization rate of the heat generated by the combustion of the combustion heater, and further leads to a low utilization rate of the fuel, which is not conducive to energy conservation and environmental protection.

[0003] Existing heat recovery devices, such as CN117232002A, use heat collecting rods to collect heat, then use fluid to take away the heat on the heat collecting rods, and then use the heat for secondary use. Although this device has good recovery efficiency, it can achieve the function of secondary heat recovery compared to traditional devices. However, the conduction method of collecting heat through the heat collecting rods and conducting it to the end of the heat collecting rods and then to the heat exchange surface has the following technical problems: 1. The contact area between the heat collecting rods and the flue gas is small; 2. The heat conduction distance on the heat collecting rods is long; 3. The contact area between the heat collecting rods and the heat exchange surface is small. The above problems limit the efficiency of heat conduction from various aspects. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a heat exchanger, which increases the contact area between flue gas and heat collecting medium, reduces the heat conduction distance in the heat collecting medium, increases the contact area of ​​the heat output surface, and thus improves the heat conduction efficiency of the heat exchange component.

[0005] The specific technical scheme is as follows: A heat exchanger comprises a heat exchanger shell and a heat exchange component, wherein the heat exchanger shell is used to accommodate the heat exchange component and seal in a direction parallel to the fins, wherein the heat exchange component comprises at least three fins, wherein the fins are arranged in parallel, and each adjacent two fins from the first fin form a group, and each group of fins are closed and connected on two longitudinal or transverse edges to form a longitudinal or transverse through-channel; each adjacent two fins from the second fin form a group, and each group of fins are closed and connected on two transverse or longitudinal edges to form a transverse or longitudinal through-channel; a right-angle partition is provided at the junction of the transverse through-channel and the longitudinal through-channel, and the right-angle partition is used to isolate the transverse through-channel and the longitudinal through-channel.

[0006] Through the above technical solution, the effect of collecting and recycling the heat in the combustion flue gas is achieved. One side of the fin is used as a heat collecting surface to collect the heat in the flue gas, increasing the contact area between the flue gas and the heat collecting surface; the other side of the fin is used as a heat dissipation surface to increase the heat dissipation area; the fin is a thin sheet and the heat is conducted from one side to the other side, shortening the distance of heat conduction; this technical solution improves the efficiency of heat conduction from the above three aspects, thereby improving the recovery efficiency of waste heat recovery.

[0007] Preferably, the heat exchanger shell includes two partitions and a bracket, the bracket is connected to the two partitions respectively, the two partitions are parallel to the fins respectively, one of the partitions is connected to the first fin, and the other partition is connected to the last fin.

[0008] Through the above technical solution, the mechanical strength and airtightness of the heat exchanger are improved.

[0009] Preferably, at least one protrusion is formed on the fin.

[0010] Through the above technical solution, the contact area between the heat collecting surface and the heat dissipating surface is increased, and the residence time of the flue gas in the heat exchange component is increased, thereby further improving the efficiency of heat conduction.

[0011] Preferably, at least one concave point is formed on the fin.

[0012] Through the above technical solution, the contact area between the heat collecting surface and the heat dissipating surface is increased, and the residence time of the flue gas in the heat exchange component is increased, thereby further improving the efficiency of heat conduction.

[0013] Preferably, the number of the protrusions or depressions formed on the fin is a multiple of three.

[0014] Through the above technical solution, the layout of the convex points and concave points on the fin is made more reasonable.

[0015] Preferably, the connection portion of the closed connection is formed by bending the edge of the fin.

[0016] Through the above technical solution, the structural strength between the fins and the connecting parts is improved.

[0017] Preferably, the angle α between the closed connection portion and the fin is greater than 90°.

[0018] The above technical solution makes the heat exchange component easy to machine.

[0019] Preferably, the closed connection portion is perpendicular to the fin.

[0020] The above technical solution facilitates the sealing between the transverse through-channel and the longitudinal through-channel.

[0021] The beneficial effects of the utility model are: increasing the contact area between the heat source and the heat collecting medium, reducing the heat conduction distance in the heat collecting medium, and increasing the contact area of ​​the heat output surface, thereby improving the heat conduction efficiency of the heat exchange component as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0023] Figure 1 This is the exploded diagram of the heat exchanger;

[0024] Figure 2 is a schematic diagram of the heat exchange component structure;

[0025] Figure 3 for Figure 2 A magnified view of part A;

[0026] Figure 4 This is the main view of the heat exchange component;

[0027] Figure 5 is a top view of a heat exchange component;

[0028] Figure 6 This is a schematic diagram of the first fin structure;

[0029] Figure 7 is a schematic diagram of the second fin structure;

[0030] 1. heat exchange component, 11. first fin, 12. second fin, 13. transverse through channel, 14. longitudinal through channel, 15. convex point, 16. concave point, 21. two partitions, 22. bracket, 23. right-angle partition. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the drawings of the specification. In the following description, many specific details are set forth to facilitate a full understanding of the utility model, but the utility model can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0033] Example 1

[0034] A heat exchanger 2 includes a heat exchange component 1 and a heat exchanger shell, wherein the heat exchange component adopts the heat exchange component described in Example 1.

[0035] like Figure 1 A heat exchanger is shown, comprising a heat exchanger shell and a heat exchange component 1.

[0036] The heat exchanger shell includes two partitions 21 and a bracket 22. The bracket 22 is connected to the two partitions 21 respectively. The bracket 22 and the two partitions 21 form a cavity for accommodating the heat exchange components and improving the overall structural strength of the heat exchanger. The two partitions 21 are parallel to the fins, one of which is connected to the first fin and the other is connected to the last fin. The right-angle partition 23 is connected to the bracket 22.

[0037] like Figure 2 As shown, a heat exchange component 1 includes at least three fins, which are arranged in parallel. From the first fin 11, every two adjacent fins form a group, and each group of fins is closed and connected at two longitudinal or transverse edges to form a longitudinal or transverse through-channel; from the second fin 12, every two adjacent fins form a group, and each group of fins is closed and connected at two transverse or longitudinal edges, and a right-angle partition is provided at the junction of the transverse through-channel and the longitudinal through-channel, and the right-angle partition is used to separate the transverse through-channel and the longitudinal through-channel.

[0038] One side of the fin is used as a heat collecting surface to collect heat in the flue gas, increasing the contact area between the flue gas and the heat collecting surface; the other side of the fin is used as a heat dissipation surface to increase the heat dissipation area; the fin is a thin sheet and heat is conducted from one side to the other, shortening the distance of heat conduction; this technical solution improves the efficiency of heat conduction from the above three aspects.

[0039] like Figure 3-7 As shown, at least one convex point 15 or at least one concave point 16 is evenly distributed on the fin. At the same time, the contact area between the heat collecting surface and the heat dissipating surface is increased, and the retention time of the flue gas in the heat exchange component is increased, and the efficiency of heat conduction is further improved. The layout of the convex points and concave points on the fin is more reasonable.

[0040] Example 2

[0041] A heat exchanger comprises a heat exchanger shell and a heat exchange component 1.

[0042] The heat exchange component 1 includes three fins, which are arranged in parallel.

[0043] The first fin 11 and the second fin 12 are closed and connected at two lateral sides to form a lateral through channel 13;

[0044] The second fin 12 and the third fin are closed and connected at two longitudinal sides to form a longitudinal through channel 14 , wherein the structure of the third fin is the same as that of the first fin 11 .

[0045] Six convex points 15 or six concave points 16 are evenly distributed on the fin.

[0046] The rest is the same as Example 1.

[0047] Example 3

[0048] A heat exchanger comprises a heat exchanger shell and a heat exchange component 1.

[0049] The heat exchange component 1 includes four fins.

[0050] The first fin 11 and the second fin 12 are closed and connected at two lateral sides to form a lateral through channel 13;

[0051] The third fin and the fourth fin are closed and connected at two lateral sides to form a lateral through-channel 11, wherein the third fin structure is the same as the first fin 11, and the fourth fin structure is the same as the second fin 12;

[0052] The second fin 2 and the third fin are closed and connected at two longitudinal edges to form a longitudinal through channel 14;

[0053] Six convex points 15 or six concave points 16 are evenly distributed on the fin.

[0054] The rest is the same as in Example 1.

[0055] Example 4

[0056] A heat exchanger comprises a heat exchanger shell and a heat exchange component 1.

[0057] The heat exchange component 1 includes five fins.

[0058] The first fin 11 and the second fin 12 are closed and connected at two lateral sides to form a lateral through channel 13;

[0059] The third fin and the fourth fin are closed and connected at two lateral sides to form a lateral through-channel 13, wherein the third fin structure is the same as the first fin 11, and the fourth fin structure is the same as the second fin 12;

[0060] The second fin 2 and the third fin are closed and connected at two longitudinal edges to form a longitudinal through channel 12;

[0061] The fourth fin and the fifth fin are closed and connected at two longitudinal edges to form a longitudinal through channel 12, wherein the structure of the fifth fin is the same as that of the first fin.

[0062] The rest is the same as in Example 1.

[0063] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A heat exchanger, characterized in that: It includes a heat exchanger shell and a heat exchange component, the heat exchanger shell is used to accommodate the heat exchange component and seal in the direction parallel to the fins, the heat exchange component includes at least three fins, the fins are arranged in parallel, every two adjacent fins from the first fin form a group, each group of fins is closed and connected on two longitudinal or transverse edges to form a longitudinal or transverse through-channel; every two adjacent fins from the second fin form a group, each group of fins is closed and connected on two transverse or longitudinal edges to form a transverse or longitudinal through-channel; a right-angle partition is provided at the junction of the transverse through-channel and the longitudinal through-channel, and the right-angle partition is used to isolate the transverse through-channel and the longitudinal through-channel.

2. A heat exchanger according to claim 1, characterized in that: The heat exchanger shell comprises two partitions and a bracket, wherein the bracket is respectively connected to the two partitions, and the two partitions are respectively parallel to the fins, wherein one partition is connected to the first fin, and the other partition is connected to the last fin.

3. A heat exchanger according to claim 1, characterized in that: At least one protrusion is formed on the fin.

4. A heat exchanger according to claim 1, characterized in that: At least one concave point is formed on the fin.

5. A heat exchanger according to claim 3 or 4, characterized in that: The number of the convex points or concave points formed on the fin is a multiple of 3.

6. A heat exchanger according to claim 3, characterized in that: There are three protrusions, and the three protrusions are parallel to the longitudinal edge or the transverse edge of the fin.

7. A heat exchanger according to claim 1, characterized in that: The connection portion of the closed connection is formed by bending the edge of the fin.

8. A heat exchanger according to claim 7, characterized in that: The angle α between the connecting portion and the fin is greater than 90°.

9. A heat exchanger according to claim 7, characterized in that: The connecting portion is perpendicular to the fin.

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