CN217423643U

CN217423643U - Hot-blast rifle device and hot-blast rifle generate heat

Info

Publication number: CN217423643U
Application number: CN202220618753.9U
Authority: CN
Inventors: 不公告发明人
Original assignee: Youwei Technology Suzhou Co ltd
Current assignee: Youwei Technology Suzhou Co ltd
Priority date: 2022-03-21
Filing date: 2022-03-21
Publication date: 2022-09-13
Anticipated expiration: 2032-03-21

Abstract

A heating device of a hot air gun comprises a heating bracket, a heating core and a heat insulation element; the heating core is arranged at one end of the heating bracket close to the air outlet of the hot air gun; the heat insulation element is sleeved on the heating bracket; the heating bracket comprises a plurality of partition plates extending from the center along the radial direction and supporting plates formed at the tail ends of the partition plates; the support plate includes a first support surface that supports the insulating element; the first supporting surface is positioned on one side of the supporting plate far away from the center; the plurality of the division plates, the support plates and the heat insulation elements form a plurality of air channels together, the cross section area of the heating support is reduced, the air channel proportion is enlarged, and the air output of the hot air gun is increased.

Description

Hot-blast rifle device and hot-blast rifle generate heat

Technical Field

The application relates to a hot-air gun subassembly especially relates to a hot-air gun device and hot-air gun that generate heat.

Background

The hot air gun is a common electric heating tool, and air blown out is heated by a heating device so as to provide hot air. The existing heating device of the hot air gun comprises a heating core and a fixing bracket thereof, and a heat insulation layer is sleeved on the outer layer of the fixing bracket. The heat insulation layer is formed by winding a mica sleeve or mica paper, plays a role in heat insulation, and avoids heat transfer to the shell of the hot air gun. The fixed bolster adopts pottery or other heat-resisting material to make, and traditional fixed bolster cross-section is full circular or honeycomb shape, and the sectional area is big, occupies great space to reduce the occupation of ratio in wind channel, reduced hot-blast rifle air output.

SUMMERY OF THE UTILITY MODEL

The application provides a hot-air gun device that generates heat reduces the consumptive material through optimizing that the support sectional area that generates heat reduces, enlarges the wind channel and accounts for the ratio, improves hot-air gun's air output.

The application provides a heating device of a hot air gun, which comprises a heating bracket, a heating core and a heat insulation element; the heating core is arranged at one end of the heating bracket close to the air outlet of the hot air gun; the heat insulation element is sleeved on the heating bracket; the heating bracket comprises a plurality of partition plates extending from the center along the radial direction and supporting plates formed at the tail ends of the partition plates; the support plate includes a first support surface that supports the insulating element; the first supporting surface is positioned on one side of the supporting plate far away from the center; the plurality of partition plates, the support plates and the heat insulation elements form a plurality of air ducts together.

Further, the heat generating support further comprises an auxiliary partition plate extending from the center in a radial direction; one side of the auxiliary separation plate, which is far away from the center, forms a second supporting surface for supporting the heat insulation element; the auxiliary partition plate divides the air duct into a plurality of sub-air ducts.

Further, the first supporting surface and the second supporting surface are located on the same cylindrical surface.

Furthermore, the ratio of the sum of the sectional areas of the plurality of sub-air ducts to the sectional area of the heat insulation element is 50-70%; the cross section direction is perpendicular to the air outlet direction.

Furthermore, the heating core comprises a plurality of heating sections and connecting sections, and at least one heating section is arranged in each sub-air channel; every two adjacent heating sections are connected through a connecting section.

Furthermore, the end faces of the partition plates and the auxiliary partition plates close to one end of the air outlet are at least partially recessed against the air outlet direction to form inner surfaces.

Further, a groove is formed on the inner surface of the auxiliary separation plate; the connecting section is arranged in the groove.

Further, the heating bracket also comprises a wiring board; the wiring board is formed by extending a partition plate against the air outlet direction; a plurality of symmetrically arranged bridging grooves are formed in the wiring board; a wiring terminal is arranged in the bridging groove; the wiring board is bulged along the radial direction at the symmetrical center of the bridging groove to form a convex rib for improving the strength.

A hot air gun comprises a shell; the hot air gun heating device is also included; the hot air gun heating device is arranged in the shell.

Further, the shell comprises a holding part, an air duct and a front cover; the hot air gun heating device is arranged in the air duct; the front cover is arranged at one end of the air duct close to the air outlet; the end faces of the partition plate and the auxiliary partition plate close to one end of the air outlet abut against the front cover.

The beneficial effects of the method are as follows: compare in traditional cross-section for the fixed bolster of perfect circle or honeycombed shape, the support that generates heat of this application adopts a plurality of discontinuous supporting parts to support thermal-insulated component, has reduced the support sectional area that generates heat, and start preheating time is short, the short-time temperature rise is fast, can provide bigger wind channel, improves the wind channel sectional area and always accounts for the ratio to improve hot-blast rifle's air output. The utility model provides a support that generates heat has the advantage that the materials is few than traditional fixed bolster, can simplify the mould structure of making the support that generates heat, shortens the shaping cycle and the qualification rate is high. The auxiliary partition plate divides the air duct into a plurality of sub-air ducts, and a heating section is arranged in each sub-air duct, so that the plurality of sub-air ducts are uniformly and rapidly heated, and the stability of the air outlet temperature of the hot air gun is improved. The convex rib on the wiring board can compensate the weakening of the strength of the wiring board by the bridging groove, can also play a role in turbulence, and improves the heating effect of the heating device on cold air. The heating core is arranged in the groove on the inner surface, and the height difference between the inner surface and the end surface can avoid short circuit caused by the fact that the heating core is contacted with the metal part of the front cover; the space between the inner surface and the end surface can also enable the front cover to shield and guide part of hot air back to the air duct, and the returned hot air is used for heating the outlet air for multiple times, so that the hot air temperature of the air outlet is improved.

Drawings

FIG. 1 is a schematic cross-sectional view of a heat-generating device;

FIG. 2 is a schematic view of a heating bracket;

FIG. 3 is an enlarged view of a portion of the heat generating support;

FIG. 4 is a schematic view of an air duct;

the reference numbers in the figures are: 10. a heat generating support; 20. a heat generating core; 30. an insulating element; 40. a center; 100. a partition plate; 110. a support plate; 111. a first support surface; 120. a wiring board; 121. a rib is protruded; 122. a bridging groove; 200. an air duct; 300. an auxiliary partition plate; 301 a second support surface; 310. an end face; 320. an inner surface; 321. a groove; 330. a sub-duct; 400. and (5) air outlet direction.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. As used in this application, the terms "first," "second," and the like do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "a number" means two or more. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed after "comprises" or "comprising" is inclusive of the element or item listed after "comprising" or "comprises", and the equivalent thereof, and does not exclude additional elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

As shown in fig. 1 and 4, the present application provides a heat gun heating device, which comprises a heating bracket 10, a heating core 20 and a heat insulation element 30; the heating core 20 is arranged at one end of the heating bracket 10 close to the air outlet of the hot air gun; the heat insulation element 30 is sleeved on the heating bracket 10; the heat generating support 10 includes a plurality of partition plates 100 radially extending from a center 40 and support plates 110 formed at ends of the partition plates 100; the support plate 110 comprises a first support surface 111 supporting the insulating element 30; the first supporting surface 111 is located on a side of the supporting plate 110 away from the center 40; the plurality of partition plates 100, the support plates 110, and the heat insulating members 30 together form a plurality of air ducts 200.

As shown in fig. 1 and 2, the heat generating supporter 10 further includes an auxiliary separation plate 300 radially extending from the center 40; the side of the auxiliary separation plate 300 remote from the center 40 forms a second support surface 301 for supporting the insulating element 30; the auxiliary partition plate 300 divides the air duct 200 into a plurality of sub-air ducts 330.

In the present embodiment, there are two partition plates 100 extending in opposite directions, and the two air ducts 200 are formed by the supporting portions 110 and the heat insulating elements 30; the auxiliary partition plates 300 are two in total, extend in opposite directions, and are perpendicular to the partition plate 100, and the auxiliary partition plates 300 divide the air duct 200 into two sub-air ducts 330. In further embodiments, both the separation plate 100 and the auxiliary separation plate 300 may extend in any direction, the separation plate 100 may be three or more, and the auxiliary separation plate 300 may be one or more.

As shown in fig. 2 and 4, the first supporting surface 111 and the second supporting surface 301 are located on the same cylindrical surface, and both the first supporting surface 111 and the second supporting surface 301 are attached to the inner wall of the heat insulating element 30.

On the basis, the ratio of the sum of the sectional areas of the plurality of sub-air ducts 330 to the sectional area of the heat insulation element 30 is 50-70%; the cross-sectional direction is perpendicular to the air outlet direction 400. Compared with the conventional fixing bracket with a full-circular or honeycomb-shaped cross section, the heat insulation element 30 in the embodiment is supported by the plurality of discontinuous first supporting surfaces 111 and second supporting surfaces 301, so that the cross section of the heating bracket 10 is remarkably reduced, the ratio of the sum of the cross sections of the plurality of sub-air ducts 330 to the cross section of the heat insulation element 30 is 60%, a larger air passage can be provided while the heat insulation element 30 is stably supported, and the air outlet amount of the heat gun is increased. In actual production, the total air channel occupancy can be changed by arranging different numbers of partition plates 100 and auxiliary partition plates 300 or adjusting the cross-sectional size of the supporting plate 110, so as to ensure that the total air channel occupancy is controlled within 50% -70%, specifically 50%, 55%, 60%, 65% or 70%, while stably supporting the heat insulating element 30.

On the basis, the heating core 20 comprises a plurality of heating sections and connecting sections, and at least one heating section is arranged in each sub-air duct 330; every two adjacent heating sections are connected through a connecting section. In this embodiment, the four sub-air ducts 330 and the two heating cores 20 are shared, each heating core 20 includes two heating sections, one heating section is arranged in each sub-air duct 330, and the plurality of heating sections heat the air in the plurality of sub-air ducts 330 respectively, so that the overall heating speed of the hot air gun can be increased, the heating is uniform, and the stability of the air outlet temperature of the hot air gun can be improved.

As shown in fig. 1, the end surface 310 of the partition plate 100 and the auxiliary partition plate 300 near the air outlet is at least partially recessed against the air outlet direction 400 to form an inner surface 320.

As shown in fig. 3 and 4, a groove 321 is formed on an inner surface 320 of the auxiliary separation plate 300; the connecting section is disposed in the groove 321.

As shown in fig. 2, the heat generating rack 10 further includes a wiring board 120; the terminal plate 120 is formed by extending the partition plate 100 against the air outlet direction 400; a plurality of symmetrically arranged bridging grooves 122 are arranged on the wiring board 120; a wiring terminal is arranged in the bridging groove 122; in order to compensate for the weakening of the strength of the bridging groove 122 to the wiring board 120, the wiring board 120 is bulged in the radial direction at the symmetrical center of the bridging groove 122 to form a rib 121 with improved strength; the ribs 121 also serve as turbulence to further improve the heating efficiency of the heating device to the cold air in the air duct.

The application provides a hot air gun, which comprises a shell; the heat gun heating device is also included; the hot air gun heating device is arranged in the shell.

On the basis, the shell comprises a holding part, an air duct and a front cover; the hot air gun heating device is arranged in the air duct; the front cover is arranged at one end of the air duct close to the air outlet; the end surfaces 310 of the partition plate 100 and the auxiliary partition plate 300 close to the air outlet end abut against the front cover. In practical use, the space formed by the height difference between the inner surface 320 and the end surface 310 can shield and guide part of the hot air back into the air duct, and the air outlet is heated for multiple times by the returned hot air, so that the temperature of the air outlet is increased.

Although the present application has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application, and all changes, substitutions and alterations that fall within the spirit and scope of the application are to be understood as being covered by the following claims.

Claims

1. The utility model provides a hot-blast rifle device that generates heat which characterized in that: comprises a heating bracket, a heating core and a heat insulation element; the heating core is arranged at one end of the heating bracket close to the air outlet of the hot air gun; the heat insulation element is sleeved on the heating bracket; the heating bracket comprises a plurality of partition plates extending from the center along the radial direction and a support plate formed at the tail end of each partition plate; the support plate includes a first support surface that supports the insulating element; the first supporting surface is positioned on one side of the supporting plate far away from the center; the plurality of partition plates, the support plates and the heat insulation elements form a plurality of air ducts together.

2. The heat gun heating device of claim 1, wherein: the heating bracket further comprises an auxiliary partition plate extending from the center in the radial direction; one side of the auxiliary separation plate, which is far away from the center, forms a second supporting surface for supporting the heat insulation element; the auxiliary partition plate divides the air duct into a plurality of sub-air ducts.

3. The heat gun heating device of claim 2, wherein: the first supporting surface and the second supporting surface are positioned on the same cylindrical surface.

4. The heat gun heating device of claim 2, wherein: the ratio of the sum of the sectional areas of the plurality of sub-air ducts to the sectional area of the heat insulation element is 50-70%; the cross section direction is perpendicular to the air outlet direction.

5. The heat gun heating device of claim 2, wherein: the heating core comprises a plurality of heating sections and connecting sections, and at least one heating section is arranged in each sub-air channel; every two adjacent heating sections are connected through a connecting section.

6. A heat gun heating device according to claim 5, characterized in that: the end faces of the partition plates and the auxiliary partition plates close to one end of the air outlet are at least partially recessed against the air outlet direction to form inner surfaces.

7. The heat gun heating device according to claim 6, wherein: a groove is formed on the inner surface of the auxiliary separation plate; the connecting section is arranged in the groove.

8. The heat gun heating device of claim 1, wherein: the heating bracket also comprises a wiring board; the wiring board is formed by extending a partition plate against the air outlet direction; a plurality of symmetrically arranged bridging grooves are formed in the wiring board; a wiring terminal is arranged in the bridging groove; the wiring board is bulged along the radial direction at the symmetrical center of the bridging groove to form a convex rib for improving the strength.

9. A hot air gun comprises a shell and an electric control system; the electric control system is arranged in the shell; the method is characterized in that: further comprising a heat gun heating device according to any one of claims 1 to 8; the hot air gun heating device is arranged in the shell.

10. A heat gun according to claim 9, wherein: the shell comprises a holding part, an air duct and a front cover; the hot air gun heating device is arranged in the air duct; the front cover is arranged at one end of the air duct close to the air outlet; the end faces of the partition plate and the auxiliary partition plate close to one end of the air outlet abut against the front cover.