WO2021051860A1

WO2021051860A1 - Electric heater

Info

Publication number: WO2021051860A1
Application number: PCT/CN2020/092496
Authority: WO
Inventors: 邓勇辉
Original assignee: 励精图治科技(深圳)有限公司
Priority date: 2019-09-20
Filing date: 2020-05-27
Publication date: 2021-03-25
Also published as: CN210832193U

Abstract

An electric heater comprising a heating source (20); a heat pipe group (30) for conducting heat generated by the heating source (20); and a fin unit (40) connected to the heat pipe group (30), wherein the heat pipe group (30) is connected to the heating source (20), and the fin unit (40) comprises a plurality of fins that are densely distributed.

Description

An electric heater

Technical field

The utility model belongs to the technical field of heaters, in particular to an electric heater.

Background technique

Existing electric heaters usually place a heat source in a heat medium to heat the heat medium to increase the temperature of the heat medium, and even change its state, and then transfer the heat to the air to achieve heating. In order to improve the heat exchange efficiency, the heat medium chamber is usually made larger so that it can accommodate more heat medium. However, this method sacrifices the area of the heat dissipation fins and makes the heat dissipation area insufficient. If it is necessary to ensure that there is enough The heat dissipation area needs to increase the volume of the entire electric heater, which will take up more space. In addition, due to the large amount of heat medium, it also brings about the problem of slow temperature rise, resulting in low heat dissipation efficiency of the existing electric heater.

technical problem

The purpose of the embodiments of the utility model is to provide an electric heater, which aims to solve the problem of low heat dissipation efficiency of the existing electric heater.

Technical solutions

The embodiment of the utility model is realized as follows. An electric heater includes:

Heating source

A heat pipe group that conducts the heat generated by the heat source; and

A fin unit connected to the heat pipe group;

The heat pipe group is connected with the heat source, and the fin unit includes a plurality of densely distributed fins.

Furthermore, the fin unit includes a plurality of fin modules that can be modularly assembled.

Furthermore, the fin module includes a heat conductor and a plurality of densely distributed first fins arranged on the outer surface of the heat conductor, and the heat conductor has a cavity for accommodating the heat pipe group.

Furthermore, the heat conductor and the first fin are integrally formed.

Furthermore, the fin module is provided with a space for accommodating the heat source.

Furthermore, the fin unit includes a plurality of densely distributed second fins, and each of the second fins is provided with a plurality of accommodating holes for accommodating the heat pipe group.

Furthermore, the electric heater further includes a plurality of heat-conducting clamping members for clamping the heat pipe group, and the heat-conducting clamping member is connected with the heat source.

Furthermore, each of the thermally conductive clamps is provided with a containing groove at a position corresponding to the heat pipe in the heat pipe group.

Furthermore, the heat pipe group is a heat pipe array composed of a plurality of heat pipes.

Furthermore, the electric heater further includes a protective shell covering the outside of the heat source.

Furthermore, the surface of the fin in the fin unit is wavy.

Beneficial effect

The electric heater provided by the embodiment of the utility model, through the separately arranged heat source, heat pipe group and fin unit, makes the overall volume of the electric heater smaller, because the fin unit adopts a plurality of densely distributed fins , Which greatly increases the heat dissipation area and radiation capacity. At this time, the heat generated by the heating source can be conducted to a larger area and denser fins through the heat pipe group, so that a larger area of heat exchange can be carried out, so that the heat of the heating source is not It accumulates, thereby improving the efficiency of heat exchange, making the heating speed of the electric heater faster, improving the heat dissipation efficiency of the electric heater, and solving the problem of low heat dissipation efficiency of the existing electric heater. At the same time, since the heating source and the fin unit are two completely independent standard parts, the production will be more efficient, the assembly will be smoother, and the after-sales maintenance will be easier.

Description of the drawings

Figure 1 is a schematic structural diagram of an electric heater provided by an embodiment of the present invention;

Figure 2 is an exploded structural view of the electric heater provided by an embodiment of the present invention from a perspective;

Figure 3 is an exploded structural diagram of the electric heater provided by an embodiment of the present invention from another perspective;

Figure 4 is an enlarged view of part Ⅲ of circle in Figure 2;

Figure 5 is a schematic structural diagram of an electric heater provided by another embodiment of the present invention;

Figure 6 is an exploded structural view of an electric heater provided by another embodiment of the present invention from a perspective;

Fig. 7 is an enlarged view of the part circled Ⅶ in Fig. 6.

Embodiments of the present invention

In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present utility model, and are not used to limit the present utility model.

In the present invention, unless otherwise clearly defined and defined, the terms "installation", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present utility model can be understood according to specific circumstances. The term "and/or" as used herein includes any and all combinations of one or more related listed items.

The utility model is provided with a heat source, a heat pipe group that conducts the heat generated by the heat source, and a fin unit connected to the heat pipe group. The heat pipe group is connected to the heat source. The fin unit includes a plurality of densely distributed fins, so that the heat source generates The heat can be transferred to a larger area and denser fins through the heat pipe group, so that a larger area of heat exchange can be carried out, so that the heat of the heating source does not accumulate, thereby improving the efficiency of heat exchange and making the heating speed of the electric heater It is faster, and the heat dissipation efficiency of the electric heater is improved.

Example one

Please refer to Figures 1 to 4, which are structural diagrams of an electric heater provided by an embodiment of the present invention. The electric heater includes: a heat source 20, a heat pipe group 30 that conducts heat generated by the heat source 20, and is connected to the heat pipe group 30 The fin unit 40 and the support assembly 50 used as a support. In this embodiment, the heat pipe group 30 is inserted into the fin unit 40, and the heat pipe group 30 is connected to the heat source 20, so that the heat source 20 is The generated heat is conducted to the fin unit 40 through the heat pipe group 30, so that the fin unit 40 dissipates heat to generate heating. The fin unit 40 includes a plurality of densely distributed fins.

Among them, in an embodiment of the present invention, as shown in FIGS. 1-3, the bracket assembly 50 includes: a bottom main bracket 51 that is arranged at the bottom end to carry the fin unit 40, and is fixedly connected to both sides of the bottom main bracket 51 A plurality of side panels 52, and an armrest bracket 53 connected to the end of each side panel 52 away from the bottom main bracket 51. Wherein, each side panel 52 is arranged on the outer wall of the fin unit 40, and the side panel 52 is a hollow structure. The upper and lower ends of the side panel 52 are provided with cover plates 521, and the cover plates 521 are used to close the side panels. 52 to prevent debris from entering the side panel 52. Wherein, the cover plate 521 provided at the bottom of the side panel 52 is provided with an escape through hole 522, which is used to lead out the cables on the control circuit board 523 accommodated in the side panel 52. The armrest bracket 53 is provided with an armrest hole 531 to facilitate the user to extract the electric heater.

Furthermore, in this embodiment, the bottom main bracket 51 is also provided with a supporting portion 60 below, which is used to raise the electric heater to a certain height, which plays the role of waterproofing and increasing air circulation, and at the same time increases the aesthetics. . It should be pointed out that in other embodiments of the present invention, the supporting portion 60 can also be a universal wheel to realize the rapid movement of the electric heater in all directions, and the supporting portion 60 can be based on specific actual use requirements. The settings are not limited here.

Wherein, in an embodiment of the present invention, the heat source 20 is electrically connected to the control circuit board 523. Specifically, the control circuit is disposed in the inner hollow space of the side panel 52, wherein the outer wall of the side panel 52 is An operation panel (not shown in the figure) for human-computer interaction is also provided. The control circuit board 523 is electrically connected to the operation panel and the heating source 20, so that when the user controls the operation panel on and off, the control circuit board The corresponding output power of 523 drives the work of the heat source 20, so that the heat source 20 performs work to generate heat when energized. Wherein, the number of the heating source 20 may be multiple. In this embodiment, as shown in FIG. 2 and FIG. 3, the number of the heating source 20 is specifically 4. It is understandable that in other embodiments of the present invention In this case, the number of the heating source 20 can also be other, which is not limited here.

Among them, in an embodiment of the present invention, a protective shell 70 is provided on the outside of each heating source 20, and the protective shell 70 is provided on the outside of the heating source 20 to protect the heating source 20 and reduce heat generation. The direct heat exchange between the source 20 and the outside can also improve the safety of the electric heater. Further, the protective shell 70 is provided with an avoiding groove 71 on the side close to the side panel 52, which is used to pass the cable drawn from the control circuit board 523 through the avoiding groove 71 and electrically connect to the heat source 20. connection.

Among them, in an embodiment of the present invention, the heat pipe group 30 is connected to the heat source 20 for conducting the heat generated by the heat source 20. The heat pipe group 30 is a heat pipe array composed of multiple heat pipes. Each heat pipe in the heat pipe group includes an evaporating cavity and a condensing cavity connected to each other. The inner walls of the evaporating cavity and the condensing cavity are provided with a capillary core layer, and the heat pipes are filled with fluid.

Further, the heat pipe may be a strip tube, such as a round tube, a square tube, a special-shaped tube, etc., and the heat pipe may also have a flat plate structure. Specifically, in this embodiment, the fin unit 40 is provided with the accommodating heat pipe The cavity 413 is flat, so in this embodiment, as shown in FIGS. 2 and 3, the heat pipe has a flat plate structure. It can be understood that in other embodiments of the present invention, the shape of the heat pipe and the cavity 413 can also be other, which is not limited here. More specifically, each of the two heat pipes is a group, and they are vertically inserted side by side in the fin unit 40, and the outer surface of each heat pipe and the inner surface of the fin unit 40 are arranged in close contact, so that the heat exchange area can be enlarged. , Improve heat exchange efficiency. It should be noted that when the height of the fin unit 40 is relatively high or the length of the heat pipe is relatively short, multiple heat pipes can be vertically placed in the cavity 413 of the heat pipe contained in the fin unit 40 to achieve multiple Continuous heat conduction between root heat pipes.

Among them, in an embodiment of the present invention, the fin unit 40 includes a plurality of fin modules 41 that can be modularly assembled. Specifically, the fin module 41 includes a heat conductor 411, and a heat conductor 411 disposed on the outer surface of the heat conductor 411. A plurality of first fins 412 are densely distributed. The heat conductor 411 has a cavity 413 for accommodating the heat pipe group 30. Specifically, the heat conductor 411 and the first fins 412 are integrally formed, and the fin module 41 is provided with a accommodating heating element. The accommodating space 414 of the source 20.

Further, as shown in FIG. 3, the heat conductor 411 is integrally formed with each first fin 412. In specific implementation, each of the first fins 412 is drawn and formed by the fin module 41. In this embodiment, The heat conductor 411 is specifically an aluminum alloy profile, and the first fin 412 also uses aluminum alloy fins. Specifically, the surface of the fin module 41 can be oxidized, so that the surface has a microporous structure , It can increase the heat dissipation area and radiation capacity, and improve the heat dissipation efficiency.

Furthermore, the surface of the fin in the fin unit 40 is wavy, so that the contact area between the fin unit 40 and the air can be further increased, and the heat exchange efficiency can be improved. Specifically, it sets the number of the wave-shaped first fins 412 according to actual production requirements. When the process and design heat dissipation requirements are high, it can be set to be wave-shaped on all the first fins 412; When the design heat dissipation requirement is low, as shown in FIG. 4, the plurality of first fins 412 may be provided in a wave shape, or even no wave-shaped first fin 412, which is not limited here.

Furthermore, as shown in FIG. 3, the bottom of the fin module 41 is provided with a accommodating space 414 for accommodating the heat source 20, which specifically involves cutting each first fin 412 provided at the bottom during production and manufacturing. , So that there is a certain distance between the bottom end of each first fin 412 and the bottom end of the heat conductor 411 to form a accommodating space 414 for accommodating the heat source 20. In this embodiment, the heat pipe is vertically upward. In the structure, the heat source 20 is heated at the bottom of the electric heater, and the heat pipe and the heat conductor 411 conduct heat upward from the bottom to increase the heat transfer efficiency. It can be understood that, in other embodiments of the present invention, the accommodating space 414 of the fin module 41 for accommodating the heat source 20 can also be set in other positions, which can be set according to actual use needs, and it is not here. Make a limit.

Furthermore, the heat source 20 is connected to the heat pipe provided in the heat conductor 411 through the heat conductor 411. At this time, when the heat source 20 is working to generate heat, the heat is conducted to the heat pipe. The heat conductor 411 made of aluminum alloy itself It also absorbs the heat of the heat source 20 for heat conduction, but since the equivalent thermal conductivity of the heat pipe is about 20 times that of the aluminum alloy heat conductor 411, the main heat generated by the heat source 20 is absorbed from the heat pipe and conducted to the larger area of the On a fin 412. It should be pointed out that, in other embodiments of the present invention, the specific first fins 412 provided at the bottom are processed during production, and then the thermal conductor 411 may be processed to make the The cavity 413 provided in the heat conductor 411 is exposed. At this time, when the heat source 20 is installed in the accommodating space 414 of the fin module 41, the heat source 20 and the heat conductor 411 are directly connected.

Furthermore, as shown in FIGS. 2 and 3, the first fins 412 are densely distributed on both ends of the outer surface of the heat conductor 411. At this time, after the heat of the heat source 20 conducted by the heat conductor 411, it can pass through The two ends of the heat conductor 411 are conducted to the first fins 412 to realize heat dissipation. It is understandable that in other embodiments of the present invention, each of the first fins 412 may also be only provided on the heat conductor 411. One end of the outer surface, which is set according to actual use needs, is not limited here.

Further, as shown in FIG. 3, in this embodiment, the number of the fin module 41 is two. It is understandable that in other embodiments of the present invention, other numbers of fin modules 41 can be provided according to actual production needs, and at this time, only the size of the bracket assembly 50 needs to be adjusted accordingly. Therefore, through the modular design of the fin module 41 at this time, the size of the electric heater can be set according to actual production needs, which is convenient for modular assembly. At this time, different quantities can be designed according to the application scenarios and requirements of the electric heater. An electric heater for the fin module 41.

Furthermore, as shown in FIGS. 2 to 4, in this embodiment, the number of cavities 413 of the heat conductor 411 for accommodating the heat pipe group 30 is specifically 4, and each cavity of each heat conductor 411 Two heat pipes are placed side by side in 413. Therefore, in this embodiment, the total number of heat pipes in the heat pipe group 30 is 16, and the heat pipes are made by flattening round pipes with a diameter of 8 mm. The resulting flat pipe has a thickness of 4 mm and a width of 4 mm. It is 10.6mm.

Further, in the embodiment of the present invention, the fin unit 40 is made of aluminum alloy material, which has a relatively high thermal conductivity and can effectively improve the heat exchange efficiency. It is understandable that in other embodiments of the present invention, some of the components may also be made of other materials with higher thermal conductivity, such as copper alloys, high thermal conductivity plastics, and the like.

Similarly, the number of cavities 413 in the heat conductor 411 and the number of heat pipes in the cavity 413 of each heat conductor 411 are not limited to the above solution, and the arrangement and combination can be changed as needed to make it easy to splice and lengthen. Various products of different power.

In normal operation, the heat source 20 is heated to generate heat by energizing, and the heat source 20 transfers the heat to the closely adjacent heat conductor 411. The heat conductor 411 is in close contact with the heat pipe group 30, and the heat conduction energy of the heat pipe group 30 is very high. Strong, so that most of the heat of the heating source 20 is transferred to the heat pipe group 30. At this time, the heat is transferred to the evaporation cavity of the heat pipe, so that the built-in fluid absorbs heat and phases into a gaseous state; the fluid quickly moves to the condensing cavity after gasification. After the condensing cavity is liquefied, the heat is released to the heat conductor 411 and the first fins 412 that are close to the heat pipe group 30. In the case of natural convection, a large number of the first fins 412 on the radiator exchange heat with the air, thereby The heat is dissipated into the air. Further, the condensed fluid becomes liquid, enters the capillary core layer, returns to the evaporation cavity of the heat pipe under capillary action to absorb heat again, and circulates in this way to achieve rapid heat exchange between the heat source 20 and the air. Since the heat transfer efficiency of the heat pipe group 30 is relatively high, the heat source 20 can provide a higher heating temperature, which effectively improves the heat generation efficiency of the heat source 20 to meet the temperature requirements of different heat energy supplies. At the same time, since the temperature of the heating source is increased, the temperature rise rate of the entire electric heater can be accelerated.

During use, the heat of the heating source 20 does not accumulate, thereby improving the efficiency of heat exchange, and making the heating speed of the electric heater faster. At the same time, due to the large number of first fins 412, and the wave-like design on the surface of the first fins 412 or the micro-pore structure after oxidation treatment, the heat dissipation area and radiation capacity are greatly increased, so that the heat dissipation capacity is the same. Greatly reduce the volume of the product. At the same time, the heat source 20 and the fin unit 40 are designed to be separated, making two completely independent standard parts, with higher production efficiency, smoother assembly, and easier after-sales maintenance. At the same time, the assemblable design of the fin module 41 makes it easy to design and produce electric heaters of different sizes and powers.

At the same time, the entire electric heater is a metal structure, which is more environmentally friendly as a whole. While dissipating heat, no plastic, paint, etc. are heated to a high temperature, so it will not release any harmful gas. The heating, heat transfer, heat conduction, and heat dissipation of the electric heater of the utility model are all without oil liquid participation, and there is no accident such as fire caused by local high temperature caused by dry burning.

In this embodiment, by separately setting the heat source, heat pipe group and fin unit, the overall volume of the electric heater can be made smaller. Because the fin unit adopts multiple fins densely distributed, the heat dissipation is greatly increased. Area and radiation capacity. At this time, the heat generated by the heating source can be transferred to a larger area and denser fins through the heat pipe group, so that a larger area of heat exchange can be carried out, so that the heat of the heating source does not accumulate, thereby increasing the heat The exchange efficiency speeds up the heating rate of the electric heater, improves the heat dissipation efficiency of the electric heater, and solves the problem of low heat dissipation efficiency of the existing electric heater. At the same time, since the heating source and the fin unit are two completely independent standard parts, the production will be more efficient, the assembly will be smoother, and the after-sales maintenance will be easier.

Example two

Please refer to Figures 5 to 7, which are schematic diagrams of the structure of an electric heater provided by the second embodiment of the present invention. The structure of the second embodiment is substantially the same as that of the first embodiment. The difference is that in this embodiment The fin unit 40 includes a plurality of densely distributed second fins 42, and each second fin 42 is provided with a plurality of accommodating holes 421 for accommodating the heat pipe group 30.

Further, the electric heater also includes a plurality of thermally conductive clamps 80 that clamp the heat pipe group 30, the thermally conductive clamps 80 are connected to the heat source 20, and each of the thermally conductive clamps 80 is provided at a position corresponding to the heat pipe in the heat pipe group 30.置槽33。 Housing tank 33.

In an embodiment of the present invention, the electric heater includes: a heat source 20, a heat pipe group 30 that conducts heat generated by the heat source 20, a fin unit 40 connected to the heat pipe group 30, and a bracket assembly used as a support 50. In this embodiment, the heat pipe group 30 is inserted into the fin unit 40, and the heat pipe group 30 is connected to the heat source 20, so that the heat generated by the heat source 20 is conducted to the fin unit 40 through the heat pipe group 30 , In order to make the fin unit 40 dissipate heat and generate warm air, wherein the fin unit 40 includes a plurality of fins densely distributed.

In an embodiment of the present invention, the bracket assembly 50 includes: a bottom main bracket 51 arranged at the bottom end, a plurality of side panels 52 fixedly connected to both sides of the bottom main bracket 51, and each side panel 52 away from the bottom main bracket An armrest bracket 53 connected at one end of 51 and a bottom auxiliary bracket 54 arranged on the bottom main bracket 51. A supporting part 60 is also provided under the bottom main bracket 51.

Among them, the specific structure of the bracket assembly 50 and the specific structure can refer to the above-mentioned embodiment, wherein, as shown in FIG. 7, the bottom sub-bracket 54 is substantially an E-shaped groove, and the bottom sub-bracket 54 is provided with the end surface and the bottom of the groove. The main bracket 51 is fixed, and the other end surface of the bottom auxiliary bracket 54 is used to carry the thermally conductive clamping member 80. Wherein, the E-shaped groove is used to thread the cables on the control circuit board 523 in the side panel 52, so that the cables on the control circuit board 523 can be connected to the heat source 20 at the other end after the E-shaped groove is inserted. Sexual connection.

In an embodiment of the present invention, the heating source 20 is electrically connected to the control circuit board 523, and the heating source 20 is arranged on both sides of the fin unit 40 close to the side panel 52, wherein the number of the heating source 20 can be There are multiple. In this embodiment, as shown in Figures 6 and 7, the number of heat sources 20 is specifically four, and two of them are provided at one end of the fin unit 40, and they are both clamped in the heat pipe group. At the two ends of 30, it can be understood that in other embodiments of the present invention, the number of the heating source 20 can also be other, which is not limited here.

In one embodiment of the present invention, a protective shell 70 is provided on the outside of each heating source 20, and the protective shell 70 is arranged on the outside of the heating source 20 to protect the heating source 20 and reduce the heating source 20. Direct heat exchange with the outside world can also improve the safety of the electric heater.

Wherein, in an embodiment of the present invention, the heat pipe group 30 includes a plurality of heat pipes vertically arranged in several rows, and each heat pipe extends from the fin unit 40. In this embodiment, it is specifically two heat pipes. The heat pipes are arranged in rows. Therefore, in this embodiment, the thermally conductive clamping member 80 includes a first thermally conductive clamping member 81 that is clamped in the heat pipes arranged in two rows, and two heat pipes that are arranged in two rows are clamped respectively. Two second thermally conductive clamping members 82, wherein the first thermally conductive clamping member 81 and the second thermally conductive clamping member 82 are provided with accommodating grooves 33 at positions corresponding to the heat pipes. At this time, the first thermally conductive clamping member 81 and The second heat-conducting clamping member 82 can tightly wrap the heat pipes, so as to increase the heat-conducting contact area and the fixed support of each heat pipe. It can be understood that in other embodiments of the present invention, when the number of rows of the heat pipe groups 30 is other number of rows, the number of the heat conducting clamping members 80 is also set correspondingly, which is not limited here.

Further, the heat pipe may be a strip pipe, such as a round pipe, a square pipe, a special-shaped pipe, etc. In this embodiment, it is specifically a round pipe, and the heat pipe group 30 is a heat pipe array composed of multiple heat pipes. In the example, it includes a plurality of heat pipes arranged vertically in two rows, and the part of each heat pipe protruding from the fin unit 40 is clamped and covered by the first heat conducting clamp 81 and the second heat conducting clamp 82, and at the same time The other end of the second heat-conducting clamping member 82 is also connected to the heat source 20. Among them, it should be pointed out that the heating source 20 adopts a planar heating method, and each heat pipe is a round tube. In other embodiments of the present invention, the heating source 20 can be directly connected to each heat pipe, so that the heating source can be directly connected to each heat pipe. The heat generated by 20 is conducted to each heat pipe, but since the contact area between the heat source 20 and each heat pipe is small, it is impossible to achieve a fixed support for the heat pipe. Therefore, in the preferred embodiment of the present invention, it is provided with a heat-conducting clamping piece 80, so that the heat source 20 can efficiently conduct heat to the heat-conducting clamping piece 80. At the same time, because the heat-conducting clamping piece 80 covers the heat pipe, As a result, the heat-conducting clamping member 80 can not only realize the support and fixation of the heat pipe, but also realize the efficient conduction of heat, so that the heat of the heat source 20 can be effectively conducted to the heat pipe.

Among them, in an embodiment of the present invention, the fin unit 40 includes a plurality of densely distributed second fins 42, and each second fin 42 is provided with a plurality of receiving holes 421 for accommodating the heat pipe group 30, Each heat pipe passes through the accommodating hole 421 on the second fin 42 respectively, so that the plurality of second fins 42 are connected as a whole. Wherein, each second fin 42 is formed by stamping, so that each second fin 42 is flanged at the accommodating hole 421 to form a certain distance of flanging. Therefore, each second fin 42 is installed through a heat pipe. , There is a certain distance between each of the second fins 42.

Furthermore, the number of accommodating holes 421 on each second fin 42 is specifically 16, and each second fin 42 is arranged side by side in two rows. Therefore, in this embodiment, the number of heat pipes in the heat pipe group 30 The total number is 16, and the heat pipe is a round tube with a diameter of 8 mm, the thickness of the second fin 42 is 0.5 mm, and the width of the flange of each second fin 42 is 1.5 mm. Furthermore, the surface of the fin in the fin unit 40 is wavy, so that the contact area between the fin unit 40 and the air can be further increased, and the heat exchange efficiency can be improved. The number of the second fins 42 in the wavy shape is set. Refer to the above-mentioned embodiment.

Further, in the embodiment of the present invention, the fin unit 40 is made of aluminum alloy material, which has a relatively high thermal conductivity and can effectively improve the heat exchange efficiency. When the fin unit 40 is made of aluminum alloy, the surface can be oxidized, so that the surface has a microporous structure, which can increase the heat dissipation area and radiation capacity, and improve the heat dissipation efficiency. It is understandable that in other embodiments of the present invention, some of the components may also be made of other materials with higher thermal conductivity, such as copper alloys, high thermal conductivity plastics, and the like.

In normal operation, the heat source 20 is heated to generate heat by energizing, and the heat source 20 transfers the heat to the closely-adjacent heat-conducting clamping piece 80, and the heat-conducting clamping piece 80 is in close contact with the heat pipe group 30, and the heat pipe group 30 The heat conduction energy of the heat source 20 is very strong, so that most of the heat of the heating source 20 is transferred to the heat pipe group 30. At this time, the heat is transferred to the evaporation cavity of the heat pipe, so that the built-in fluid absorbs heat and turns into a gaseous state; the fluid quickly moves to The condensing cavity, after the condensing cavity is liquefied, releases heat to the second fins 42 close to the heat pipe group 30. In the case of natural convection, a large number of second fins 42 on the radiator exchange heat with the air, thereby The heat is dissipated into the air. Further, the condensed fluid becomes liquid, enters the capillary core layer, returns to the evaporation cavity of the heat pipe under capillary action to absorb heat again, and circulates in this way to achieve rapid heat exchange between the heat source 20 and the air. Further, the heat source 20 is heated at both ends of the electric heater in the horizontal direction at the same time, and the heat pipe group 30 conducts heat from the two ends to the second fin 42 in the middle, so that heat dissipation can be performed more efficiently and quickly. Since the heat transfer efficiency of the heat pipe group 30 is relatively high, the heat source 20 can provide a higher heating temperature, which effectively improves the heat generation efficiency of the heat source 20 to meet the temperature requirements of different heat energy supplies. At the same time, since the temperature of the heating source is increased, the temperature rise rate of the entire electric heater can be accelerated. It should be pointed out that for some parts that are not mentioned in this embodiment, the specific description of the same structure can be referred to the above embodiment, which will not be repeated here.

The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model shall be included in this utility model. Within the scope of protection of utility models.

Claims

An electric heater, characterized in that it comprises:

Heating source

A heat pipe group that conducts the heat generated by the heat source; and

A fin unit connected to the heat pipe group;

The heat pipe group is connected with the heat source, and the fin unit includes a plurality of densely distributed fins.
The electric heater according to claim 1, wherein the fin unit includes a plurality of fin modules that can be modularly assembled.
The electric heater according to claim 2, wherein the fin module comprises a heat conductor, and a plurality of densely distributed first fins arranged on the outer surface of the heat conductor, and the heat conductor has a housing The cavity of the heat pipe group.
The electric heater according to claim 3, wherein the heat conductor and the first fin are integrally formed.
The electric heater according to claim 3, wherein the fin module is provided with a space for accommodating the heat source.
The electric heater according to claim 1, wherein the fin unit includes a plurality of densely distributed second fins, and each of the second fins is provided with a plurality of containers for accommodating the heat pipe group.置孔.
7. The electric heater according to claim 6, wherein the electric heater further comprises a plurality of heat-conducting clamping members for clamping the heat pipe group, and the heat-conducting clamping member is connected to the heat source.
8. The electric heater according to claim 7, wherein each of the thermally conductive clamping members is provided with a containing groove at a position corresponding to the heat pipe in the heat pipe group.
The electric heater according to claim 1, wherein the heat pipe group is a heat pipe array composed of a plurality of heat pipes.
The electric heater according to claim 1, wherein the electric heater further comprises a protective shell covering the outside of the heat source.
The electric heater according to claim 1, wherein the surface of the fin in the fin unit is wavy.