CN210225794U

CN210225794U - Electric heating device provided with aluminum shell

Info

Publication number: CN210225794U
Application number: CN201920684111.7U
Authority: CN
Inventors: Xiaoyi Chen; 陈肖依
Original assignee: ZHEJIANG LETAI ELECTRICAL APPLIANCE CO Ltd
Current assignee: ZHEJIANG LETAI ELECTRICAL APPLIANCE CO Ltd
Priority date: 2019-05-14
Filing date: 2019-05-14
Publication date: 2020-03-31
Anticipated expiration: 2029-05-14

Abstract

The utility model discloses an electric heater unit with aluminium casing, including heating pipe, die-casting aluminium spare parcel the heating pipe still includes aluminium casing, aluminium casing is connected on the die-casting aluminium spare and with the die-casting aluminium spare surface compresses tightly, be provided with two binding post on the heating pipe, binding post expose in the die-casting aluminium spare, the aluminium casing lower part is provided with the opening, binding post follows the opening stretches out. The utility model discloses connect the aluminium casing on die-casting aluminium alloy, when not influencing the thermal conductivity, also protect die-casting aluminium alloy, improve die-casting aluminium alloy's corrosion resistance, the aluminium casing is difficult for appearing the great phenomenon of tendency of fracture, stress corrosion crack simultaneously, more is favorable to increase of service life.

Description

Electric heating device provided with aluminum shell

Technical Field

The utility model relates to an electric heater unit especially relates to an electric heater unit who is provided with aluminium casing.

Background

The existing cast aluminium electric heater uses tubular electric heating element as heating body, and uses high-quality aluminium alloy material to make die-casting formation so as to form the shell of electric heater, and can be extensively used in the equipments of plastics machinery, die head, cable machinery, chemical industry, rubber and petroleum, etc.. The cast aluminum heater has the characteristics of long service life, good heat preservation performance, strong mechanical performance, magnetic field interference resistance and the like, but the die casting process can cause the product to have the defects of air holes, shrinkage cavities, shrinkage porosity, sand inclusion, slag inclusion, cracks and the like, so that the cast aluminum electric heater product can have the following defects: 1. the surface of the product is coated with a protective coating by a spraying process, but the surface of the product is easy to fall off due to long-term contact with water. 2. The surface of a product is protected by adopting the processes of oxidation, electrophoresis, electro-plating and the like, the surface of the product is easy to corrode after being contacted with water for a long time, in addition, the surface quality and the surface treatment quality of the product are seriously affected by the defects of air holes, shrinkage cavities, shrinkage porosity, sand inclusion, slag inclusion, cracks and the like existing in the die casting process, so that the problems that the surface of the cast aluminum electric heater is easy to corrode and a surface protective coating is easy to fall off are caused, and the improvement is needed.

Disclosure of Invention

The utility model discloses to the cast aluminium electric heater surface that exists among the prior art defect such as perishable, protective coating easily drops, provide a new electric heater unit who is provided with aluminium casing.

In order to solve the technical problem, the utility model discloses a following technical scheme realizes:

the utility model provides an electric heating device with aluminum casing, includes heating pipe, die-casting aluminum component parcel the heating pipe still includes aluminum casing, aluminum casing connects on the die-casting aluminum component and with the die-casting aluminum component surface compresses tightly, be provided with two binding post on the heating pipe, binding post expose in the die-casting aluminum component, aluminum casing lower part is provided with the opening, binding post follows the opening stretches out.

Die-casting aluminum component parcel heating pipe, wherein the heating pipe is used for generating heat, die-casting aluminum component is used for heat conduction, aluminum housing connects on die-casting aluminum component, because of the above-mentioned defect of non-pressure die-casting aluminum component, when not influencing the heat conductivility, also protect die-casting aluminum component, improve die-casting aluminum component's corrosion resistance, compare with at die-casting aluminum component surface spraying coating, aluminum housing can enough play the effect that the protection die-casting aluminum component surface avoids corroding, simultaneously in long-term use, aluminum housing is difficult for appearing the fracture, the great phenomenon of tendency of stress corrosion crackle, more be favorable to increase of service life, two connecting terminal that set up on the heating pipe, a power supply is used for connecting, realize the electric heating of heating pipe.

Preferably, the electric heating device provided with the aluminum casing further comprises a temperature controller, and the temperature controller is arranged at the bottom of the die-cast aluminum part.

The temperature controller can realize the measurement and the control to the temperature to reach required heating effect, and when the high temperature, the broken circuit prevents that the heating pipe from damaging, thereby realizes the utility model discloses a heating and accuse temperature function.

Preferably, in the above electric heating device with an aluminum casing, the temperature controller is a snap-action temperature controller.

The kick type temperature controller can generate physical deformation in the temperature controller according to the temperature change in liquid, so that a circuit is switched on or off, and the effect of protecting a heating pipe is achieved.

Preferably, in the electric heating device with the aluminum shell, an electric heating wire and an insulating layer are arranged in the heating pipe, and the insulating layer is located between the electric heating wire and the pipe wall of the heating pipe.

The electric heating wire is used for realizing the heating function, and the insulating layer is used for isolating the electric heating wire from the pipe wall of the heating pipe, so that the use safety of the electric heating wire is improved on one hand, and the electric heating wire can be prevented from being overheated and the service life of the electric heating wire is prolonged on the other hand.

Preferably, in the electric heating apparatus provided with the aluminum case, the insulating layer is filled with magnesium oxide powder.

The magnesium oxide powder has good heat conductivity coefficient and insulativity, and can ensure the heat conduction effect and the heating safety of the heating pipe.

Preferably, in the above electric heating device with an aluminum casing, the electric heating wire is a spiral resistance wire.

The electric heating wire is set to be the heliciform resistance wire, compares with linear resistance wire, more is favorable to promoting electric heating wire's rate of heating, and heliciform resistance wire accumulates the heat capacity more easily simultaneously, further improves heating efficiency.

Preferably, in the electric heating apparatus provided with the aluminum casing, the die-cast aluminum member is provided with a fixing member.

The mounting that sets up on the die-casting aluminium alloy is used for inciting somebody to action the utility model discloses fix on treating heating device, realize the utility model discloses a heating function.

Preferably, in the above electric heating apparatus with an aluminum casing, the fixing member is a screw post.

The screw post can fix the die-casting aluminum component firmly, and meanwhile, the production cost can be reduced.

Preferably, the electric heating device is provided with an aluminum casing, and the aluminum casing is integrally formed.

Aluminum shell integrated into one piece can reduce manufacturing procedure, reduces manufacturing cost, has avoided die casting process to have defects such as gas pocket, shrinkage cavity, shrinkage porosity, double-layered sand, double-layered sediment, crackle, plays the protection effect to die casting aluminium spare better, has improved simultaneously the utility model discloses the aesthetic property of outward appearance demonstrates integrated into one piece's curve is beautiful.

Preferably, the electric heating apparatus is provided with an aluminum housing, and the aluminum housing is connected to the outer surface of the die-cast aluminum member by a die-casting process.

The die-casting process is adopted to connect the aluminum shell and the die-casting aluminum part, so that raw materials can be saved, the production efficiency is improved, and meanwhile, the tightness of the connection of the aluminum shell and the die-casting aluminum part is ensured, so that the protection effect of the aluminum shell on the die-casting aluminum part is further improved.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a cross-sectional view of the present invention;

fig. 3 is a cross-sectional view of an aluminum housing according to the present invention;

fig. 4 is a schematic structural diagram of the middle heating pipe of the present invention.

Detailed Description

The invention will be described in further detail with reference to the accompanying drawings 1-4 and the detailed description, which are not intended to limit the invention:

example 1

The utility model provides an electric heater unit with aluminium casing, includes heating pipe 2, die-casting aluminium casting 4 parcel heating pipe 2 still includes aluminium casing 1, aluminium casing 1 is connected on die-casting aluminium casting 4 and with the 4 surfaces of die-casting aluminium casting compress tightly, be provided with two binding post 21 on heating pipe 2, binding post 21 expose in die-

casting aluminium casting

4, 1 lower part of aluminium casing is provided with opening 11, binding post 21 is followed opening 11 stretches out.

During the use, will the utility model discloses insert in the container, connect binding post 21 on the power again, heating pipe 2 begins to heat, and heating pipe 2 leads the heat to die casting aluminium spare 4 on to through aluminium casing 1 with heat transfer to the container, heat the liquid in the container, realize the utility model discloses an electrical heating function.

Preferably, the die-casting aluminum die-casting device further comprises a temperature controller 5, and the temperature controller 5 is arranged at the bottom of the die-casting aluminum piece 4.

Preferably, the temperature controller 5 is a snap-action temperature controller.

Preferably, an electric heating wire 22 and an insulating layer 23 are arranged in the heating tube 2, and the insulating layer 23 is located between the electric heating wire 22 and the tube wall of the heating tube 2.

Preferably, the insulating layer 23 is filled with magnesium oxide powder.

Preferably, the electrical heating wire 22 is a spiral resistance wire.

Preferably, the die-cast aluminum member 4 is provided with a fixing member 3.

Preferably, the fixing member 3 is a screw post.

Preferably, the aluminum case 1 is integrally formed.

Preferably, the aluminum case 1 is attached to the outer surface of the die-cast aluminum member 4 by a die-casting process.

Specifically, during the use, heating pipe 2 begins the heating, the temperature of liquid constantly risees in the container, when reaching the settlement temperature, 5 disconnection binding post 21 heating circuit on the temperature controller, make the temperature control of liquid in the container in the certain extent, prevent that heating pipe 2 heating temperature is too high, damage electric heating wire 22, reduce life, in the heating process, insulating layer 23 has good heat conductivity, can give die-casting aluminium spare 4 with the heat conduction that electric heating wire 22 produced, insulating properties that insulating layer 23 has simultaneously, can avoid electric heating wire 22 to take place the condition of leaking electricity, improve the safety in utilization, in the course of working, insulating layer 23 except filling magnesium oxide powder, can also fill other materials that have heat conductivity and insulating nature.

In short, the above description is only a preferred embodiment of the present invention, and all the equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the present invention.

Claims

1. The utility model provides an electric heater unit with aluminium casing, includes heating pipe (2), die-casting aluminium casting (4) parcel heating pipe (2), its characterized in that: still include aluminium casing (1), aluminium casing (1) is connected on die-casting aluminium spare (4) and with die-casting aluminium spare (4) surface compresses tightly, be provided with two binding post (21) on heating pipe (2), binding post (21) expose in die-casting aluminium spare (4), aluminium casing (1) lower part is provided with opening (11), binding post (21) are followed opening (11) are stretched out.

2. An electric heating apparatus provided with an aluminum case according to claim 1, characterized in that: the die-casting aluminum die-casting device is characterized by further comprising a temperature controller (5), wherein the temperature controller (5) is arranged at the bottom of the die-casting aluminum piece (4).

3. An electric heating apparatus provided with an aluminum case according to claim 2, characterized in that: the temperature controller (5) is a kick type temperature controller.

4. An electric heating apparatus provided with an aluminum case according to claim 1, characterized in that: an electric heating wire (22) and an insulating layer (23) are arranged in the heating pipe (2), and the insulating layer (23) is located between the electric heating wire (22) and the pipe wall of the heating pipe (2).

5. An electric heating apparatus provided with an aluminum case according to claim 4, characterized in that: the insulating layer (23) is filled with magnesia powder.

6. An electric heating apparatus provided with an aluminum case according to claim 4, characterized in that: the electric heating wire (22) is a spiral resistance wire.

7. An electric heating apparatus provided with an aluminum case according to claim 1, characterized in that: and a fixing piece (3) is arranged on the die-casting aluminum piece (4).

8. An electric heating apparatus provided with an aluminum case according to claim 7, characterized in that: the fixing piece (3) is a screw column.

9. An electric heating apparatus provided with an aluminum case according to claim 1, characterized in that: the aluminum shell (1) is integrally formed.

10. An electric heating apparatus provided with an aluminum case according to claim 1, characterized in that: the aluminum shell (1) is connected to the outer surface of the die-casting aluminum piece (4) through a die-casting process.