Heating core assembly and hot air gun

Abstract

A heating core assembly and a heat gun are used for an air heating device, the heating core assembly comprises a support and a heating element, the support is provided with an air inlet, an air outlet and a channel connected with the air inlet and the air outlet, the heating element is arranged in the channel, and the heating core assembly is characterized in that the channel extends along a preset smooth curve, and the heating element is arranged in the channel. The length of the channel is larger than the lengthwise length of the support, and air is heated by the heating element when passing through the channel.

Description

Technical Field

[0001] This utility model relates to the field of power tools, and in particular to a heating element assembly and a hot air gun. Background Technology

[0002] A hot air gun is a heating tool used to heat air to create a hot airflow. It has multiple functions, including removing old paint from metal surfaces, removing self-adhesive stickers, heating plastic tubing to make it bend, drying damp wood, heating packaging films and tubes to shrink, removing rust, heating polyethylene materials used for joining metals to shrink, and heating materials to soften for welding. It can also be used to weld or remove components using the hot airflow blown from the heating element.

[0003] Currently, the heating wire holders on the market all have straight channels, resulting in a short airflow path within the channel. This leads to insufficient heating time for the air, resulting in low exhaust air temperature and low thermal efficiency. Consequently, the desired working effect cannot be achieved, and the working efficiency of the hot air gun is reduced. Utility Model Content

[0004] The purpose of this application is to overcome the shortcomings of existing technologies and effectively solve the problem that the flowing air quickly dissipates into the air after passing through the heating support channel, thus providing a more efficient and convenient hot air gun. This utility model is achieved through the following technical solution:

[0005] A heating element assembly for an air heating device includes a support and a heating element. The support has an air inlet, an air outlet, and a channel connecting the air inlet and the air outlet. The heating element is disposed within the channel. The channel extends along a predetermined smooth curve, such that the length of the channel is greater than the longitudinal length of the support. Air is heated by the heating element when passing through the channel. The curved channel increases the length of the channel, thereby improving the hot air heating efficiency.

[0006] Furthermore, the number of channels is 2 to 10, and the multiple channels are evenly distributed.

[0007] Furthermore, the cross-section of the channel is always circular.

[0008] Furthermore, the support is made of ceramic or mica, which have higher heat resistance.

[0009] Furthermore, the channels are independently set up and not connected to each other, and hot air enters from the air inlet and is blown out from the air outlet.

[0010] Furthermore, the heating element is in the form of a cluster or a coil.

[0011] Furthermore, the channel is constructed in a spiral shape.

[0012] Furthermore, the heating element includes a tightly wound section, the length of which is less than the length of the channel.

[0013] Furthermore, the angle between the air inlet and the air outlet is 20°~120°.

[0014] A hot air gun includes a housing, and a hot air device for generating hot air is provided inside the housing. The hot air device includes a heating core assembly, and a hot air pipe is provided at the front end of the housing. The heating core assembly is located inside the hot air pipe.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] This invention features a curved heating channel with heating elements disposed within it. By increasing the length of the channel, the air outlet distance of the hot air gun is increased, thereby improving heating efficiency. The simple structure makes operation more convenient and greatly improves work efficiency. Attached Figure Description

[0017] Figure 1 This is a perspective view of a hot air gun according to an embodiment of this application.

[0018] Figure 2 for Figure 1 The image shows a cross-sectional view of the hot air gun.

[0019] Figure 3 for Figure 2 The diagram shows a three-dimensional view of the support frame.

[0020] Figure 4 for Figure 2 A three-dimensional view of the heating element shown. Detailed Implementation

[0021] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application.

[0022] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to limit the application. Unless otherwise defined, the technical or scientific terms used in this application should be understood in their ordinary sense by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "a" or "one," etc., do not indicate a quantity limitation, but rather indicate the presence of at least one. "A plurality" or "several" indicates two or more. Unless otherwise indicated, the terms "front," "rear," "lower," and / or "upper," etc., are for ease of description only and are not limited to a location or spatial orientation. The terms "comprising" or "including," etc., mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. The terms "connected," "linked," etc., are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect. The singular forms “a,” “the,” and “the” used in this application specification and appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0023] Combination Figures 1 to 4 A heating core assembly 1 is used in an air heating device. The heating core assembly 1 includes a bracket 3 and a heating element 2 (in this embodiment, the heating element is a heating wire; in other embodiments, the heating element may be in other forms, such as a heating plate, which is not limited here). The bracket 3 has an air inlet 4, an air outlet 5, and a channel 6 connecting the air inlet 4 and the air outlet 5. The heating element 2 is disposed in the channel 6. The characteristic feature is that the channel 6 extends along a predetermined smooth curve, such that the length of the channel 6 is greater than the longitudinal length of the bracket 3. When the air passes through the channel 6, it is heated by the heating element. The curved channel 6 increases the length of the channel 6 and improves the hot air heating efficiency.

[0024] The number of channels 6 is 2 to 10, the multiple channels 6 are evenly distributed, and the channels 6 are constructed in a spiral shape.

[0025] Preferably, the support 3 is made of ceramic or mica, as ceramic or mica has higher heat resistance. The channels 6 are independently set and not interconnected; hot air enters from the air inlet 4 and is blown out from the air outlet 5.

[0026] Combination Figure 4The heating element 2 is in the shape of a ball or coil, and the support 3 is cylindrical. The heating element 2 includes a tightly wound section, the length of which is less than the length of the channel 6, and the angle between the air inlet 4 and the air outlet 5 is 20° to 120°.

[0027] A hot air gun 100 includes a housing 101, and a hot air device for generating hot air is provided inside the housing. The hot air device includes a heating core assembly 1. A hot air pipe 102 is provided at the front end of the housing 101, and the heating core assembly 1 is located inside the hot air pipe 102.

[0028] The hot air gun 100 is provided with a curved heating channel 6, and the heating element 2 is disposed in the channel 6. By increasing the length of the channel 6, the air outlet distance of the hot air gun is increased, thereby improving the heating efficiency. The structure is simple, making operation more convenient and greatly improving work efficiency.

[0029] It should be understood that the accompanying drawings illustrate exemplary embodiments in detail, and it should be understood that this application is not limited to the details or methods set forth in the specification or illustrated in the drawings. It should also be understood that the terminology is for descriptive purposes only and should not be considered limiting.

[0030] With respect to this specification, further modifications and alternative embodiments of various aspects of the invention will be apparent to those skilled in the art. Therefore, this description should be interpreted as illustrative only. The configurations and arrangements shown in the various exemplary embodiments are merely illustrative. Although only some embodiments have been described in detail in this disclosure, many modifications (e.g., variations in the size, dimensions, structure, shape and proportions of various elements, values ​​of parameters, mounting arrangements, use of materials, color, orientation, etc.) can be made without substantially departing from the novel teachings and advantages described herein. Some elements shown as integrally formed may be constructed from multiple parts or elements, the positions of elements may be reversed or otherwise changed, and the nature or number or position of discrete elements may be changed or varied. According to alternative embodiments, the order or sequence of any process, logical algorithm, or method steps may be changed or reordered. Other substitutions, modifications, alterations, and omissions may be made to the design, operating conditions, and arrangements of the various exemplary embodiments without departing from the scope of the invention.

[0031] Although the present application describes specific combinations of features in the appended claims, various embodiments of the invention relate to any combination of any features described herein, whether or not such combinations are currently claimed, and any such combination of features may be claimed in this application or in a future application. Any feature, element, or component of any exemplary embodiment discussed above may be used alone or in combination with any feature, element, or component of any other embodiment discussed above.

[0032] In various exemplary embodiments, relative dimensions, including angles, lengths, and radii, as shown in the accompanying drawings, are drawn to scale. Actual measurements in the drawings will disclose the relative dimensions, angles, and scales of the various exemplary embodiments. The various exemplary embodiments extend to a wide range around absolute and relative dimensions, angles, and scales that can be determined from the accompanying drawings. The various exemplary embodiments include any combination of one or more relative dimensions or angles that can be determined from the accompanying drawings. Furthermore, actual dimensions not explicitly stated in this specification can be determined by combining the scales of the dimensions measured in the accompanying drawings with the explicit dimensions stated in this specification.

Claims

1. A heating element assembly for use in an air heating device, the heating element assembly comprising a bracket and a heating element, the bracket having an air inlet, an air outlet, and a channel connecting the air inlet and the air outlet, the heating element being disposed within the channel, characterized in that, The channel extends along a predetermined smooth curve, such that the length of the channel is greater than the longitudinal length of the support, and the air is heated by the heating element when it passes through the channel.

2. The heating element assembly as described in claim 1, characterized in that: The number of channels is 2 to 10.

3. The heating element assembly as described in claim 1, characterized in that: The cross-section of the channel is always circular.

4. A heating element assembly as described in claim 2, characterized in that: The support is made of ceramic or mica.

5. A heating element assembly as described in claim 4, characterized in that: The channels are set up independently and are not connected to each other.

6. A heating element assembly as described in claim 1, characterized in that: The heating element is in the form of a cluster or coil.

7. A heating element assembly as described in claim 5, characterized in that: The channel is constructed in a spiral shape.

8. A heating element assembly as described in claim 7, characterized in that: The heating element includes a tightly wound section, the length of which is less than the length of the channel.

9. A heating element assembly as described in claim 5, characterized in that: The angle between the air inlet and the air outlet is 20° to 120°.

10. A hot air gun, comprising a housing, a hot air device for generating hot air disposed within the housing, the hot air device comprising a heating element assembly, a hot air pipe disposed at the front end of the housing, the heating element assembly being located within the hot air pipe, characterized in that: The heating element assembly is the heating element assembly described in any one of claims 1 to 9.

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