CN2427289Y - Safety device to prevent high temperature damage at the air outlet of the heat gun - Google Patents

Abstract

The utility model relates to a hot-blast rifle overcomes its high temperature harm. The safety device for preventing high-temp. damage of air outlet of hot-air gun includes sleeve and protective sleeve, and is characterized by that said sleeve is a tube body whose front portion is equipped with a converging mouth, its interior is cover-mounted with front end edge of internal tube of hot-air gun, and the bottom edge of said sleeve is formed into a ring wall which is extended outwards and can be extended from tail, and on the ring wall a through hole is radially set, and positioned in the internal edge of front end of hot-air gun and a certain distance is retained with sleeve surface, and said protective sleeve is correspondent to the peripheral edge of front end of hot-air gun, and is converged forward and can retain a spacing space with sleeve peripheral edge. For use in heat gun applications.

Description

Safety device to prevent high temperature damage at the air outlet of the heat gun

The utility model relates to an industrial heat gun.

The existing heat gun is shown in Figure 1: the heat gun A with a high-impedance electric heater wound inside uses the fan B to blow out the heat energy through the inner tube C, and the surface temperature reaches 500-600°C. Although it is suitable for use, the disadvantages are:

1. Since the inner tube C is integrally formed and its front end protrudes from the front end of the heat gun A to a certain length, even if the blowing is stopped at such a high temperature, when people touch the front end of the inner tube C, they will be seriously burned, which is very dangerous;

2. Such a high temperature, when touching wood, paper and other flammable items, there is a danger of fire;

3. The inner tube C is provided with a rib inside the heat gun A or another metal ring D, through which the high temperature is continuously transmitted to the inside of the heat gun A. As a result of accumulation, the heat gun A may even be melted down.

The purpose of the utility model is to provide a safety device for preventing the high-temperature damage of the air outlet of the heat gun to overcome the high-temperature hazard of the heat gun.

The purpose of this utility model is achieved like this: the safety device that prevents the high-temperature injury of hot-air gun air outlet, it comprises sleeve pipe, sheath, it is characterized in that: this sleeve pipe is the pipe body that a front part has converging mouth shape, and its inside and The front edge of the inner tube of the heat gun is assembled and assembled, and a ring wall extending outward is formed on the bottom edge of the sleeve. The ring wall is radially provided with perforations and is positioned on the inner edge of the front end of the heat gun and is kept at a distance from the surface of the sleeve. The corresponding bundle of the sheath is arranged on the peripheral edge of the front end of the heat gun and converges forward and maintains a space from the peripheral edge of the casing.

The above-mentioned design can make the casing and the inner tube fit on the inner edge of the front end of the heat gun, and the sheath bundle is arranged behind the front edge of the heat gun. During operation, the high-temperature energy wind force generated around the inner tube passes through many perforations in the ring wall, and passes through many holes in the ring wall. The space between the sleeve and the sheath is blown outwards. Since the electric heater is installed in the inner tube, and its heat is blocked by the inner tube wall, the temperature of the outside air of the inner tube is relatively low, and the colder air is blown out. The airflow is blown out through the ring wall and the perforation of the casing, which can effectively reduce the contact temperature of the hot inner edge. At the same time, the sheath can not only prevent the human body from directly touching the casing due to its material characteristics and its periphery to prevent burns, but also its The space between the casing and the casing continues to have cold air blowing out, even if the sheath maintains a certain safe surface contact temperature, and prevents the accumulation of heat energy, so that the heat gun will not be damaged, and a good safety effect of preventing high temperature dangers and hazards is achieved. .

Below by accompanying drawing, embodiment again further explanation.

Fig. 1 existing heat gun structure schematic diagram;

Fig. 2 three-dimensional exploded schematic diagram of the utility model;

Fig. 3 is a schematic diagram of airflow guidance of the utility model;

As shown in Fig. 2, 3: the utility model comprises sleeve pipe 13, sheath 14, it is characterized in that: this sleeve pipe 13 is that a front portion has the pipe body of converging mouth shape, and its inside and the front end of heat gun 1 inner pipe 11 The edge sleeve is combined, and the bottom edge of the casing 13 is formed with a ring wall 131 extending to the outer tail. The ring wall 131 is radially provided with a perforation 132 and is positioned on the inner edge of the front end of the heat gun 1 and maintains an alignment with the surface of the casing 13. A distance A, the sheath 14 is correspondingly arranged on the peripheral edge of the front end of the heat gun 1 and converges forward and maintains a space B with the peripheral edge of the sleeve 13 . Wherein, the accommodating entrance of the rear end of the sleeve 13 is larger than the nozzle of the inner tube 11, and the front edge of the inner tube 11 correspondingly penetrates into the interior of the overhead sleeve 13, and there is a gap space between the inner tube 11 and the accommodating entrance of the sleeve 13. C, so that the contact area between the sleeve pipe 13 and the inner pipe can be reduced to a minimum, and at the same time, the heat transfer between the inner pipe 11 and the sleeve pipe 13 can be reduced by utilizing the poor heat transfer characteristics of the air, and then the sleeve pipe 13 and the sleeve pipe 13 can be reduced. The surface temperature of the ring wall 131 decreases, so that the contact temperature between the ring wall 131 and the inner edge of the heat gun 1 decreases accordingly, achieving a safer effect. Wherein, the sheath 14 is made of heat-resistant and transparent plastic. Wherein, the front edge of the sheath 14 is longer than the opening end edge of the sleeve 13, which can prevent the human body from being scalded by inadvertent touching. Wherein, the front end edge 112 of the inner tube 11 of the heat gun 1 corresponds to the slot 133 penetrating into the inside of the top casing 13 to fit and position. The contact of sleeve pipe 13 and inner pipe 11 can adopt fixed-point type, and the contact area is reduced to minimum, thus it can be seen that the utility model can summarize the following advantages:

1. The connection between the inner tube 11 and the casing 13 can be called a separate design, which avoids the risk of melting due to the high heat energy generated by the electric heater 111 of the heat gun 1 .

2. The high hot air blown out by the fan motor group 12, through the setting of the casing 13, prevents the accumulation of high temperature on the inner edge of the heat gun 1, ensuring safety.

3. The setting of the sheath 14 fundamentally prevents the risk of human body burns caused by the high temperature of the air outlet of the heat gun, thereby opening up the use of the heat gun and having great practicability.

Claims (4)

1. A safety device for preventing high-temperature damage at the air outlet of a heat gun, which includes a sleeve and a sheath, and is characterized in that: the sleeve is a tube body with a closed mouth at the front, and its interior is set with the front edge of the inner tube of the heat gun Assembled, and formed on the bottom edge of the casing to have a ring wall extending outward. The ring wall is radially provided with perforations and is positioned on the inner edge of the front end of the heat gun and keeps a distance from the surface of the casing. The sheath corresponds to the bundle design. Converge forward on the periphery of the front end of the heat gun and keep a space from the periphery of the casing. 2. The safety device for preventing high temperature at the air outlet of the heat gun according to claim 1, wherein the rear end of the sleeve has a larger opening than the inner tube, and the front edge of the inner tube is correspondingly inserted into the top sleeve. Inside, there is a clearance space between the periphery of the inner tube and the accommodating opening of the casing. 3. The safety device for preventing high temperature at the air outlet of the heat gun according to claim 1, wherein the sheath is made of heat-resistant and transparent plastic. 4. The safety device for preventing high temperature at the air outlet of the heat gun according to claim 1, wherein the front edge of the sheath is longer than the opening edge of the casing.

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