Air heating core, hot air device and hot air gun

Abstract

The utility model discloses an air heating core, a hot air device and a hot air gun. The air heating core includes a heating element and a heat sink. A mounting hole is provided in the middle of the heat sink. The heating element can be detachably mounted in the mounting hole. The heat sink is provided with a plurality of air flow channels that penetrate the two end surfaces of the heat sink in a direction parallel to the mounting hole. The utility model provides a plurality of air flow channels on the heat sink, heats the heat sink by the heating element, and then heats the air in the air flow channel by the heat sink to form hot air. In addition, the heating element and the heat sink are detachably provided so that the heating element or the heat sink can be easily replaced in case of damage.

Description

Technical Field

[0001] The utility model relates to the technical field of air heating equipment, and in particular discloses an air heating core, a hot air device and a hot air gun. Background Art

[0002] The hot air guns currently popular in the market generally use resistance wire as the heating element. Its working principle is to first make a bracket with mica, and then wind the resistance wire around the mica bracket. There is a fan motor at the rear end of the mica bracket, and the air is pushed through the resistance wire by the motor, thereby being heated. This air heating system has two disadvantages: first, mica will become brittle and powdery after being exposed to high temperature for a long time, and its service life is short, and the powder may be inhaled by people; second, the thermal efficiency is low, and the air stays on the surface of the resistance wire for a short time. To obtain rational hot air, the surface temperature of the resistance wire must be increased, which means increasing the power and increasing energy consumption. Utility Model Content

[0003] The utility model provides an air heating core, a hot air device and a hot air gun, aiming to solve the problems of short service life and high energy consumption of the existing air heating system.

[0004] In order to solve the above problems, the utility model provides an air heating core, which includes: a heating element and a heat dissipation element, a mounting hole is provided in the middle of the heat dissipation element, the heating element can be detachably mounted in the mounting hole, and the heat dissipation element is provided with a plurality of air flow channels passing through the two end surfaces of the heat dissipation element in a direction parallel to the mounting hole.

[0005] As a further improvement of the present invention, the aperture of the air inlet of the air flow channel is larger than the aperture of the air outlet, and the aperture of the air flow channel gradually increases from the air inlet to the air outlet.

[0006] As a further improvement of the present invention, the heating element is provided in a cylindrical shape, and the mounting hole is provided as a circular hole matching the heating element.

[0007] As a further improvement of the present invention, the heating element is arranged in a square columnar shape, and the mounting hole is arranged as a square hole matching the heating element.

[0008] In order to solve the above problems, the utility model also provides a hot air device, which includes a blowing component and one of the air heating cores described above, and the blowing component is arranged at the air inlet end of the air heating core.

[0009] As a further improvement of the utility model, the hot air device also includes a heat insulating member, a through hole is provided in the middle of the heat insulating member, and the air heating core sleeve is arranged in the through hole.

[0010] As a further improvement of the present invention, the air heating core is arranged at one end of the through hole, and the blowing assembly is arranged at the other end of the through hole, so that a space is formed between the air heating core, the blowing assembly and the thermal insulation component, and the air heating core includes a heating component and a heat dissipation component, one end of the heating component is sleeved in the heat dissipation component, and the other end of the heating component extends into the space.

[0011] In order to solve the above problems, the utility model also provides a hot air gun, which includes a hot air gun body and one of the hot air devices described above, wherein the hot air device is arranged in the air duct of the hot air gun body.

[0012] The beneficial effects achieved by the utility model are:

[0013] The utility model provides an air heating core, which is configured as a heating element and a heat sink, and then multiple air channels are configured on the heat sink. The heating element is used to heat the heat sink, and the heat sink is used to heat the air in the air channel. The design of the multiple air channels greatly increases the contact area between the heat sink and the air, and improves the heating efficiency of the heat sink for the air. The porous design has a certain hindering effect on the air flow, thereby extending the contact time between the air and the heat sink, and further improving the heating efficiency. In addition, the air heating core of the utility model does not need to use mica as a bracket, and has a longer service life. Moreover, the heating element and the heat sink are connected in a detachable manner, and can be replaced even if one of them is damaged, without the need to replace the entire air heating core, thereby reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the air heating core of the utility model;

[0015] Figure 2 This is a schematic diagram of the exploded structure of an embodiment of the air heating core of the utility model;

[0016] Figure 3 Schematic diagrams of various structures of the air flow passage of the heat sink of an embodiment of the air heating core of the utility model;

[0017] Figure 4 This is a schematic diagram of the cross-sectional structure of an embodiment of the air heating core of the utility model;

[0018] Figure 5 This is a structural schematic diagram of another embodiment of the air heating core of the utility model;

[0019] Figure 6 This is a schematic diagram of the overall structure of an embodiment of the hot air device of the utility model;

[0020] Figure 7 This is a schematic diagram of the exploded structure of an embodiment of the hot air device of the utility model;

[0021] Figure 8 It is a schematic cross-sectional structure diagram of an embodiment of the hot air device of the utility model. DETAILED DESCRIPTION

[0022] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0023] Figure 1 and Figure 2 An embodiment of the air heating core of the utility model is shown. Figure 1 and Figure 2 As shown, the air heating core includes: a heating element 1 and a heat dissipation element 2, a mounting hole 21 is provided in the middle of the heat dissipation element 2, the heating element 1 is detachably mounted in the mounting hole 21, and the heat dissipation element 2 is provided with a plurality of air flow channels 22 penetrating the two end surfaces of the heat dissipation element 2 in a direction parallel to the mounting hole 21.

[0024] Specifically, the size of the mounting hole 21 is exactly matched with the size of the heating element 1, so that the heating element 1 can be inserted into the mounting hole 21 more firmly. The air flow channel 22 can be set as holes of various shapes, such as Figure 3 As shown, the air flow channel 22 can be configured as a circular shape (such as Figure 3 (a)), triangle (as shown in Figure 3 (b)), polygons (such as Figure 3 The small hole structure (as shown in (c)) can also be set as a trapezoidal structure (as shown in Figure 3 The large cavity structure shown in (d) is not limited in this embodiment.

[0025] Preferably, the mounting hole 21 is a through hole that passes through both end surfaces of the heat sink 2 . Therefore, when the heat sink 1 is disassembled, the heat sink 1 can be pushed from one end of the through hole to facilitate taking out the heat sink 1 .

[0026] Further, such as Figure 4 As shown, in order to increase the wind force at the outlet end of the air heating core, the aperture of the air inlet of the air flow channel 22 is larger than the aperture of the air outlet, and the aperture of the air flow channel 22 gradually increases from the air inlet to the air outlet.

[0027] Specifically, by setting the aperture of the air flow channel 22 to gradually increase from the air inlet to the air outlet, the flow rate of the air flow from the air inlet to the air outlet gradually increases, so that the flow rate of the air flow blown out from the air outlet is faster, thereby increasing the speed of the air flow blowing out.

[0028] Furthermore, in order to facilitate the disassembly of the heating element 1 , in this embodiment, the heating element 1 is configured as a cylinder, and the mounting hole 21 is configured as a circular hole matching the heating element 1 .

[0029] Specifically, by setting the heating element 1 to be cylindrical and the mounting hole 21 to be a circular hole, the heating element 1 can be rotated and pulled out when being disassembled, making disassembly more convenient.

[0030] In some embodiments, Figure 5 As shown, the heating element 1 can also be arranged in a square column, and the mounting hole 21 is arranged as a square hole matching the heating element 1. Specifically, the heating element 1 in a square column can also fully contact the inner surface of the mounting hole 21 to improve the heat conduction efficiency.

[0031] Figure 6 and Figure 7 An embodiment of the hot air device of the utility model is shown. Figure 6 and Figure 7 As shown, the hot air device includes: a blowing component 100 and the air heating core 200 described in the above embodiment, and the blowing component 100 is arranged at the air inlet end of the air heating core 200.

[0032] Specifically, by arranging the blowing assembly 100 at the air inlet end of the air heating core 200, the blowing assembly is used to blow air into the air heating core 200, so that the air flows into the air flow channel 22 of the air heating core 200 and is heated by the heat sink 2 of the air heating core 200. It should be noted that the size of the air outlet end of the blowing assembly 100 matches the size of the end face of the air heating core 200, so that the air flow blown out by the blowing assembly 100 can just enter the air heating core 200.

[0033] Furthermore, the hot air device also includes a heat insulating member 300 , a through hole 3001 is provided in the middle of the heat insulating member 300 , and the air heating core 200 is sleeved in the through hole 3001 .

[0034] Specifically, the heat insulating member 300 is wrapped around the outside of the air heating core 200 , which can prevent burns caused by accidentally touching the heat dissipating member 2 on the one hand, and can protect the heat dissipating member 2 on the other hand.

[0035] For further information, please also refer to Figure 6 , Figure 7 and Figure 8 The air heating core 200 is arranged at one end of the through hole 3001, and the blowing component 100 is arranged at the other end of the through hole 3001, so that a space 3002 is formed between the air heating core 200, the blowing component 100 and the insulation component 300, and the air heating core 200 includes a heating element 1 and a heat dissipation element 2, one end of the heating element 1 is sleeved in the heat dissipation element 2, and the other end of the heating element 1 extends into the space 3002.

[0036] Specifically, a space 3002 is constructed by the air inlet end of the air heating core 200, the air outlet end of the blowing assembly 100 and the heat insulation component 300, and then a part of the heating element 1 of the air heating core 200 is extended into the space 3002. Therefore, when the blowing assembly 100 is working, the air first enters the space 3002, and is first heated by the heating element 1 and the air inlet end of the heat dissipation component 2 extended into the space 3002, and then enters the air flow channel 22 to be heated, thereby further improving the heating efficiency of the air flow.

[0037] In addition, the utility model also discloses a hot air gun, which includes a hot air gun body and the hot air device described in one of the above embodiments, and the hot air device is arranged in the air duct of the hot air gun body.

[0038] Although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention. Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An air heating core, characterized in that: It includes: A heating element and a heat dissipation element, wherein a mounting hole is arranged in the middle of the heat dissipation element, the heating element can be detachably mounted in the mounting hole, and the heat dissipation element is provided with a plurality of air flow channels penetrating the two end surfaces of the heat dissipation element in a direction parallel to the mounting hole.

2. The air heating core according to claim 1, characterized in that: The aperture of the air inlet of the air flow channel is larger than the aperture of the air outlet, and the aperture of the air flow channel gradually increases from the air inlet to the air outlet.

3. The air heating core according to claim 1, characterized in that: The heating element is provided in a cylindrical shape, and the mounting hole is provided as a circular hole matching the heating element.

4. The air heating core according to claim 1, characterized in that: The heating element is arranged in a square columnar shape, and the mounting hole is arranged as a square hole matching the heating element.

5. A hot air device, characterized in that: It comprises a blowing component and the air heating core according to any one of claims 1 to 4, wherein the blowing component is arranged at the air inlet end of the air heating core.

6. The hot air device according to claim 5, characterized in that: It also includes a heat insulating member, a through hole is arranged in the middle of the heat insulating member, and the air heating core sleeve is arranged in the through hole.

7. The hot air device according to claim 6, characterized in that: The air heating core is arranged at one end of the through hole, and the blowing component is arranged at the other end of the through hole, so that a space is formed between the air heating core, the blowing component and the thermal insulation component. The air heating core includes a heating component and a heat dissipation component. One end of the heating component is sleeved in the heat dissipation component, and the other end of the heating component extends into the space.

8. A hot air gun, characterized in that: It comprises a hot air gun body and the hot air device according to any one of claims 5 to 7, wherein the hot air device is arranged in the air duct of the hot air gun body.

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