CN201503130U

CN201503130U - Hot air gun and heat coil-positioning structure

Info

Publication number: CN201503130U
Application number: CN2009201738120U
Authority: CN
Inventors: 郑传兴
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-08-27
Filing date: 2009-08-27
Publication date: 2010-06-09
Anticipated expiration: 2019-08-27

Abstract

The utility model relates to a hot air gun and a heat coil-positioning structure. A fan is arranged in the hot air gun to produce swirling unidirectional air flow; a heat-resistant holder as the heat coil-positioning structure is provided with a plurality of positioning holes which are alternately high and low, and a heat coil is wound in the positioning holes on the heat-resistant holder. The air flows through the electrically heated heat coil to become intensely hot air flow; since the positioning holes are alternately high and flow, observed in the projection direction of the cross section, the wound heat coil is staggerly distributed, so that the overlapping area is reduced, consequently, the heat exchange rate of the intensely hot air flow is increased, the heat effect is enhanced, and thereby adverse heat concentration is reduced.

Description

Heat gun and heat coil location structure

Technical field

The utility model refers to be used in the heat gun about a kind of heat gun and heat coil location structure especially, can increase the heat coil location structure of rate of heat exchange.

Background technology

Heat gun brushes the generation thermal current with fan to heat coil, and it is used as home-use hair-dryer or industrial heat baking machine etc., because it belongs to a kind of hot machine, for the lifting and the inner heat radiation of rate of heat exchange, is the design focal point of this series products.

See also Fig. 1, Fig. 1 is the combination schematic diagram of known techniques heat coil 52 and heat-resisting support body 54.In general, the heat coil 52 of high impedance is to be wrapped in mica sheet with helical form to be made up on the heat-resisting support body 54 that sets up, and fixes heat coil 52 with the locating hole 56 of heat-resisting support body 54 outer rims and be wound in position on the heat-resisting support body 54.The cross section of heat-resisting support body 54 is a cross, so that heat coil 52 is brushed by air-flow fully, high hot blow is gone out heat gun by this, to produce the required high thermal current of operator, with general about 500 degrees centigrade to 800 degrees centigrade of industrial use.

See also Fig. 2, Fig. 2 cuts open schematic diagram for the side of known techniques heat gun 50.Structure shown in Figure 1 is to be installed in the airflow path 502 of heat gun 50, fan 60 is installed in airflow path 502 rear ends, can introduce air-flow from heat gun 50 rear sides and brush heat coil 52 in the airflow path 502, high thermal current is blown out from the front end of heat gun 50 airflow path 502.

Yet, with the cross section, because locating hole 56 degree of depth unanimities, so, the heat coil 52 that conventional art is twined is to be same cast position in projecting direction, after just air flow stream is crossed the ground floor coil, second layer coil is hided and is not fully brushed behind at the ground floor coil, thereby in airflow path 502, produce uneven temperature gradient distribution (press, low near heat coil 52 surface temperatures of fan 60, otherwise away from heat coil 52 its temperature height of fan 60), with the highest near air outlet place temperature, except causing heat energy not to be fully utilized the thermal losses, the high heat build-up at adjacent air outlet place also makes heat coil 52 easy breakdown like this, and overall thermal efficient is clear.

Therefore, main purpose of the present utility model is to provide a kind of heat gun and heat coil location structure, to improve the problems referred to above.

The utility model content

The purpose of this utility model is to provide a kind of heat gun and heat coil location structure, can improve rate of heat exchange, avoids improper heat build-up, and then reaches the function that energy-conservation, high heat is imitated and prolonged the heat gun operation lifetime.

For reaching above-mentioned purpose, the utility model provides a kind of heat gun, comprises a fan, a heat-resisting support body and a heat coil.This fan sets up airflow path that should heat gun, in order to this airflow path is produced one-way gas flow; This heat-resisting support body is installed in the airflow path of this heat gun, and this heat-resisting support body outer rim is arranged with the alternate locating hole of a plurality of height along airflow direction; This heat coil is striden and is located at those locating holes to be wound on this heat-resisting support body.

Wherein, this heat-resisting support body is the heat-resisting support body that mica sheet sets up, and its section is any in Y shape, cross or the M shape.This heat coil is wound on this heat-resisting support body with helical form.

The utility model also provides a kind of heat coil location structure, in order to locate the heat coil in the heat gun, comprise a heat-resisting support body, be installed in the airflow path of this heat gun, this heat-resisting support body outer rim is arranged with the alternate locating hole of a plurality of height along airflow direction, and this heat coil is striden and is located at those locating holes to be wound on this heat-resisting support body.

Therefore, by heat gun of the present utility model and heat coil location structure, utilize the alternate locating hole arrangement design of heat-resisting support body outer rim height, make the projection amount of heat coil on the truncation surface reduce overlapping, use and to improve rate of heat exchange, avoid improper heat build-up, and then reach the function that energy-conservation, high heat is imitated and prolonged the heat gun operation lifetime.

Can be about advantage of the present utility model and spirit by following detailed description and appended graphic being further understood.

Description of drawings

Fig. 1 is the combination schematic diagram of known techniques heat coil and heat-resisting support body;

Fig. 2 cuts open schematic diagram for the side of known techniques heat gun;

Fig. 3 is the three-dimensional exploded view of heat-resisting support body of the utility model and heat coil;

Fig. 4 is the upright schematic diagram of the group of heat-resisting support body of the utility model and heat coil;

Fig. 5 cuts open schematic diagram for the side of the utility model heat coil location structure;

Fig. 6 is the schematic cross-section of the utility model heat coil location structure; And

Fig. 7 is located at the interior air-flow schematic diagram of heat gun for the utility model heat coil location structure.

The primary clustering symbol description

Heat gun 50 airflow path 102

Heat coil location structure 30 heat-resisting support bodys 302

Locating hole 304 heat coils 32

Fan 60

The specific embodiment

See also Fig. 3 and Fig. 4, Fig. 3 is the three-dimensional exploded view of heat-resisting support body 302 of the utility model and heat coil 32.Fig. 4 is heat-resisting support body 302 of the utility model and the upright schematic diagram of the group of heat coil 32.The utility model provides a kind of heat gun 50 and heat coil location structure 30, and heat gun 50 roughly as known shown in Figure 2, set up by the airflow path 102 of the fan 60 corresponding heat guns 50 that comprised, in order to airflow path 102 is produced the one-way gas flow of turns.

Heat gun 50 more comprises a heat coil location structure 30 and a heat coil 32, and heat coil location structure 30 is mainly mica sheet and makes up the heat-resisting support body 302 that sets up.

The cross section of heat-resisting support body 302 can be arbitrary form of Y shape, cross or M shape, and icon is embodiment with the cross, promptly is beneficial to set up heat coil 32 enough airflow spaces are arranged again, and enough structural strengths are also arranged; Heat-resisting support body 302 is installed in the airflow path 102 of heat gun 50.The heat coil 32 of high impedance is striden and is located at a plurality of locating holes 304 to be wound on the heat-resisting support body 302, and heat coil 32 is subjected to electric energy can produce high heat, the air in the airflow path of heating fast 102.

Further see also Fig. 5, Fig. 5 cuts open schematic diagram for the side of the utility model heat coil location structure 30.Heat-resisting support body 302 outer rims are arranged with the alternate locating hole of a plurality of height 304 along airflow direction, heat coil 32 is striden and is located at those locating holes 304 and is wound on the heat-resisting support body 302 with helical form, so, according to the truncation surface of air current flow direction, staggered from level to level heat coil 32 just can not be overlapped in same airflow direction fully.

See also Fig. 6, Fig. 6 is the schematic cross-section of the utility model heat coil location structure 30.Cross section with heat coil location structure 30, because locating hole 304 degree of depth height is alternate, the projection that makes heat coil 32 on the truncation surface only little part of centre is staggered, the neither meeting in other position is overlapping, therefore, after thermal current flows through preceding one deck heat coil 32, what easily do not stopped flows through time one deck heat coil 32 again, just can fully brush each layer heat coil 32, and though make heat coil 32 away from or near fan 12, all can fully be dispelled the heat, therefore, the temperature gradient distribution that is produced in airflow path 102 is more uniform, can avoid improper heat build-up, and improves rate of heat exchange.

In addition, heat gun 50 as the aforementioned, and wherein heat-resisting support body 302 is to be good to have tapering along airflow path 102, can find out by Fig. 7, and, be less in the area of containing of heat-resisting support body 302 sections to be close to air outlet, also narrower with regard to the air outlet place.So, can concentrate thermal current to blow out, and thermal current can be very fast near the flow velocity of air outlet, uses and can avoid causing the air outlet heat build-up because of heat coil 32 rates of heat exchange hang down, and then the uneven problem of temperature gradient distribution in the airflow path 102 takes place.

Therefore, by heat gun 50 of the present utility model and heat coil location structure 30, utilize alternate locating hole 304 arrangement design of heat-resisting support body 302 outer rims height, make the projection amount of heat coil 32 on the truncation surface reduce overlapping, use and to improve rate of heat exchange, avoid improper heat build-up, and then reach the function that energy-conservation, high heat is imitated and prolonged heat gun 50 operation lifetimes.

By the above detailed description of preferred embodiments, be to wish to know more to describe feature of the present utility model and spirit, and be not to come category of the present utility model is limited with above-mentioned disclosed preferred embodiment.On the contrary, its objective is that hope can contain in the category of the claim that is arranged in the desire application of the utility model institute of various changes and tool equality.

Claims

1. a heat gun is characterized in that, this heat gun comprises:

One fan sets up airflow path that should heat gun, in order to this airflow path is produced one-way gas flow;

One heat-resisting support body is installed in the airflow path of this heat gun, and this heat-resisting support body outer rim is arranged with the alternate locating hole of a plurality of height along airflow direction; And

One heat coil, this heat coil are striden and are located at those locating holes to be wound on this heat-resisting support body.

2. heat gun as claimed in claim 1 is characterized in that: this heat-resisting support body is the support body that mica sheet set up.

3. heat gun as claimed in claim 1 is characterized in that: the section of this heat-resisting support body is the arbitrary pattern in Y shape, cross or the M shape.

4. heat gun as claimed in claim 1 is characterized in that: this heat coil is to be wound on this heat-resisting support body with helical form.

5. heat gun as claimed in claim 1 is characterized in that: this heat-resisting support body has tapering along airflow path.

6. heat gun as claimed in claim 5 is characterized in that: the area of containing in this heat-resisting support body section is less to be close to air outlet.

7. a heat coil location structure in order to locate the heat coil in the heat gun, is characterized in that, this heat coil location structure comprises:

One heat-resisting support body is installed in the airflow path of this heat gun, and this heat-resisting support body outer rim is arranged with the alternate locating hole of a plurality of height along airflow direction, and this heat coil is striden and is located at those locating holes to be wound on this heat-resisting support body.

8. heat coil location structure as claimed in claim 7 is characterized in that: this heat-resisting support body is the support body that mica sheet set up.

9. heat coil location structure as claimed in claim 7 is characterized in that: the section of this heat-resisting support body is the arbitrary pattern in Y shape, cross or the M shape.

10. heat coil location structure as claimed in claim 7 is characterized in that: this heat coil is to be wound on this heat-resisting support body with helical form.