CN2538196Y

CN2538196Y - Fixer for heat coil of hot-air gun

Info

Publication number: CN2538196Y
Application number: CN 01264174
Authority: CN
Inventors: 郑传兴
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-10-12
Filing date: 2001-10-12
Publication date: 2003-03-05
Anticipated expiration: 2011-10-12

Abstract

A fixed installation for heat coil of heat gun is provided, which comprises a shell, an air supply apparatus, a heating unit and a cannula, wherein the air supply apparatus is provided at the back end of the shell, the impeller diving into the wind collecting mask is connected the driving end of the electromotor. The heating unit is composed of a base, a plurality of locating blocks and heat coils, wherein the base is made of mica lamination to form a cross frame and the heat coil is coiled by resistance wire of high impedance. The fixed installation is characterized in that: a plurality of locating blocks are respectively inserted into and positioned inside the cross grooves formed by the base, whose outer side is provided with a plurality of spacing grooves and element rests uniformly distributed. The heat coils are forced to be inserted into the spacing grooves of each locating block in turn by encircling, and both ends of the heat coil are fixed on the base and are connected with the power supply. A wind disk is fixed at the front end of the base, and can effectively fix and separate the heat coil to improve the thermal efficiency.

Description

Heat gun heat coil fixture

Technical field

The utility model relates to heat gun, refers to a kind of pistol type heat gun heat coil fixture especially.

Background technology

Referring to Fig. 8, be the heat gun that uses now, generally all be to adopt this kind structure stationary heat loop A.This heat coil A mostly be heat coil by high impedance around forming, pedestal B is the cross support body of being made by mica sheet, uniform some groove C on support body four limits, heat coil are looped around in regular turn in the groove C on support body four limits and fix, and form heat coil A.But because the operating temperature of heat coil A is quite high, Chang Yin expands with heat and contract with cold and makes its distortion, lax; after using a period of time, heat coil A can be because of the hanging of heat coil, or because of being subjected to external force vibration; and make its heat coil deviate from the groove C of pedestal B; contact with adjacent heat coil, cause power supply or short circuit, because heat coil A power output height; electric current is very big; regular meeting blows heat coil or burns heat gun, even initiation fire, so its danger is quite big.In addition, heat coil A directly is erected in the groove C of pedestal B, because the operating temperature of heat coil A is quite high, up to 800-1000 ℃, its heat conducts on the inner electronic component and circuit very soon, the performance of electronic component and circuit be can change, even electronic component and circuit damaged, the service life of reducing product.

Summary of the invention

The purpose of this utility model is that a kind of heat coil difficult drop-off and the high heat gun heat coil fixture of the thermal efficiency will be provided.

The purpose of this utility model is achieved in that a kind of heat gun heat coil fixture, comprises housing, air-supply arrangement, heat-generating units and sleeve pipe; Wherein air-supply arrangement is located at the housing rear end, impeller stretches in the wind-collecting cover and links to each other with motor shaft extension end, heat-generating units is by pedestal, some locating pieces and heat coil constitute, this pedestal is made cross support body by mica sheet, heat coil is by the resistance wire coiled of high impedance, it is characterized in that: some locating pieces plug-in card respectively are positioned in the formed cross groove of pedestal, its outer side edges is provided with some uniform limited impressions and convex tendon, heat coil with around mode compel to snap in the limited impression of each locating piece in regular turn, and the two ends of heat coil are fixed on the pedestal and with power supply and are linked to each other, and a wind disk is fixedly arranged on the front end of pedestal.Wherein:

Also be provided with a longitudinal fluting on the medial surface of some locating pieces of described another heat-generating units, this locating piece is inserted on the cross seamed edge of pedestal fixing by longitudinal fluting.

The front end of described pedestal is provided with the wind disk of a diameter less than casing inner diameter.

Described locating piece is shaped to the best with heat-stable ceramic especially by the heat proof material moulding.

Advantage of the present utility model is:

1, be evenly equipped with limited impression and convex tendon on the locating piece, have bigger span and isolate area, heat coil compels to snap in wherein, can reach preferred positioning and isolation effect, can prevent from effectively to improve security of products, and reduce its fault rate because of heat coil is out of shape the short circuit problem that is caused.

2, the place ahead of pedestal is provided with a wind disk, outwards blow out thermal current and formed the eddy current that circles round by its retardance, increased the holdup time of air-flow in sleeve pipe, increased the preheating time of air-flow, can improve the temperature of thermal current, and after eddy current mixes, more even from the hot stream temperature that air outlet blows out, so can make full use of the heat that heat coil produces, improve the thermal efficiency of heat gun.

3, locating piece very easily fixes on pedestal, and is wrapped up in by heat coil bundle and to be one, and it is simple in structure, location and isolation effect are splendid, can be applicable to use on various different types heat guns or the heat gun.

4, locating piece can reduce the pyroconductivity of heat coil to heat gun parts, electronic component and circuit effectively by the heat-stable ceramic moulding, can reduce its long-pending heat problem, prolongs its service life.

Description of drawings

Fig. 1, be the utility model first embodiment user mode figure.

Fig. 2, be the three-dimensional exploded view of the utility model first embodiment.

Fig. 3, be the combination stereogram of the utility model first embodiment.

Fig. 4, be the I-I cutaway view among Fig. 3.

Fig. 5, be the three-dimensional exploded view of the utility model second embodiment.

Fig. 6, be the combination stereogram of the utility model second embodiment.

Fig. 7, be the II-II cutaway view of Fig. 6.

Fig. 8, for commonly using heat gun heat-generating units assembling schematic diagram.

The specific embodiment

Referring to Fig. 1, be the utility model first embodiment, a kind of heat gun heat coil fixture generally comprises housing 1, air-supply arrangement 2, heat-generating units 3 (instant heating coil fixing device) and sleeve pipe 4; Wherein: housing 1 front end is provided with sleeve pipe and fixes mouth, and the rear end is provided with air inlet; Sleeve pipe 4 front ends are provided with air outlet, stretch out outward behind the casing clamp Gu Kou and are sealed by card, and the rear end is provided with wind-collecting cover 6, is fixed in housing 1 bosom; Air-supply arrangement 2 is fixedly arranged on housing 1 rear end, and impeller 22 stretches into the shaft extension end that is fixed in motor 21 in the wind-collecting cover 6, produces the air-flow that outwards blows out by motor 21 drives impeller 22, and motor 21 electricity are connected to control circuit board 5.

Form, and be installed in the sleeve pipe 4 by pedestal 31, four locating pieces 32, heat coil 33 and wind disks 34 referring to Fig. 2-4, heat-generating units 3; Pedestal 31 is cross support bodys of being made by mica sheet, heat coil 33 is around the coil that forms by the high-impedance resistors silk, four locating pieces 32 are by the heat-stable ceramic moulding, and plug-in card is positioned in the pedestal 31 formed cross grooves respectively, its outer side edges is provided with some uniform limited impressions 321 and convex tendon 322, in limited impression 321 can compel heat coil 33 to snap in, convex tendon 322 then can strengthen the isolation area of compeling to be stuck in the heat coil 33 in the limited impression 321 with its width, heat coil 33 with around mode compel to be stuck in the limited impression 321 of each locating piece 32 in regular turn, and the size of utilizing limited impression 321 cooperates and the width of big span and convex tendon 322, the stationary heat coil 33 effectively, and effectively keep apart adjacent heat coil 33, the two ends of heat coil 33 are fixed on the pedestal 31, again its two ends electricity are connected on the control circuit board 5 (or link to each other with power supply).

Heat gun with this kind heat coil fixture, heat coil 33 is fixed, and the isolation area is big, be difficult for deviating from limited impression 321, and the heat that heat coil 33 is produced concentrates and outwards blows out, thermal efficiency height, and be difficult for being transmitted on the electronic component and control circuit board of housing rear end.

Referring to Fig. 2,3, be provided with the wind disk 34 of a diameter less than casing inner diameter at the front end of pedestal 31, this wind disk 34 is fixed the groove 311 of pedestal front end in by projection 341 plug-in cards on it; The thermal current that outwards blows out is subjected to its retardance and forms the eddy current that circles round, increased the holdup time of air-flow in sleeve pipe 4, promptly increased the preheating time of air-flow, improve the temperature of thermal current, and after eddy current mixes, make the hot stream temperature that blows out from air outlet more even,, improve the thermal efficiency of heat gun so can make full use of the heat that heat coil 33 produces.And when generally using heat gun, all make it be close to the material to be heated surface, needed is the hot stream temperature that blows out, but not the speed of thermal current or air quantity.

Referring to Fig. 5-7, be the utility model second embodiment, its basic structure is identical with first embodiment, difference is: four locating pieces 32 of heat-generating units 3 (instant heating coil location device) are by the heat proof material moulding, its medial surface is provided with a longitudinal fluting 320, this locating piece 32 can be inserted on the cross seamed edge of pedestal 31 fixing by longitudinal fluting 320, locating piece 32 lateral surfaces are provided with the convex tendon 322 of uniform limited impression 321 and both sides thereof, can above-mentioned mode fix heat coil 33 equally, and can effective isolation two adjacent heat coils 33, reach the high purpose of the thermal efficiency.

Claims

1, a kind of heat gun heat coil fixture comprises housing, air-supply arrangement, heat-generating units and sleeve pipe; Wherein air-supply arrangement is located at the housing rear end, impeller stretches in the wind-collecting cover and links to each other with motor shaft extension end, heat-generating units is by pedestal, some locating pieces and heat coil constitute, this pedestal is made cross support body by mica sheet, heat coil is by the resistance wire coiled of high impedance, it is characterized in that: some locating pieces plug-in card respectively are positioned in the formed cross groove of pedestal, its outer side edges is provided with some uniform limited impressions and convex tendon, heat coil with around mode compel to snap in the limited impression of each locating piece in regular turn, and the two ends of heat coil are fixed on the pedestal and with power supply and are linked to each other, and a wind disk is fixedly arranged on the front end of pedestal.

2, according to the described heat gun heat coil of claim 1 fixture, it is characterized in that: also be provided with a longitudinal fluting on the medial surface of some locating pieces of described another heat-generating units, this locating piece is inserted on the cross seamed edge of pedestal fixing by longitudinal fluting.

3, according to claim 1 or 2 described heat gun heat coil fixtures, it is characterized in that: the front end of described pedestal is provided with the wind disk of a diameter less than casing inner diameter.

4, according to the described heat gun heat coil of claim 1 fixture, it is characterized in that: described locating piece is shaped to the best with heat-stable ceramic especially by the heat proof material moulding.