CN212029633U

CN212029633U - Heat radiation structure of electric heating furnace

Info

Publication number: CN212029633U
Application number: CN202020774047.4U
Authority: CN
Inventors: 黎伟文
Original assignee: Foshan City Shunde District Pufate Electric Appliance Industrial Co ltd
Current assignee: Foshan City Shunde District Pufate Electric Appliance Industrial Co ltd
Priority date: 2020-05-11
Filing date: 2020-05-11
Publication date: 2020-11-27
Anticipated expiration: 2030-05-11

Abstract

The utility model relates to a heat radiation structure of electric heater, including being used for the lid to connect at the outlying heat exchanger that separates of heating element, it is equipped with a plurality of inlet ports to separate heat exchanger below, the inlet port is the circular cone hole. The utility model discloses set up the inlet port that diminishes gradually by the outside to inside direction aperture that separates the heat exchanger on separating the heat exchanger, separate the heat exchanger and can separate the high fever that the heating element during operation produced, avoid high fever direct radiation in the main part, the inlet port can be to the inside radiating effect that plays of heat exchanger, avoids the continuous rising of temperature in the heat exchanger, helps improving the stability and the life-span of heating element work.

Description

Heat radiation structure of electric heating furnace

Technical Field

The utility model relates to a heat radiation structure of an electric heating furnace.

Background

The types of electric heating furnaces on the market include electric ceramic furnaces, induction cookers, and the like. Conventional electric heater all has the panel to and set up the heating element on the panel, and the heating element during operation can produce the high fever, radiates in the electric heater main part, because still be equipped with electric components such as circuit board in the electric heater main part, the circuit board working life can shorten under high thermal environment, consequently, can set up radiator fan and cover the heat exchanger that separates of heat-generating body in the electric heater usually.

A multi-functional domestic electric heater as that chinese patent document No. CN110056916A discloses, including the casing, the upper surface of casing is provided with the heating region, and the electric heater still includes: the heat dissipation protective layer, the heating assembly and the heat insulation reflecting plate; the heating assembly is arranged below the heating area and is provided with at least one layer of heating unit, and the heating assembly is used for generating heat required by heating the cooker; the heat dissipation protective layer is arranged between the heating area and the heating assembly and used for absorbing and transferring heat to the heating area; the heat insulation reflecting plate is arranged at the bottom side of the heating assembly and used for insulating and reflecting heat to the heating area.

The structure scheme is that heat is emitted to the heating area through the heat insulation reflecting plate, after the electric heating furnace works for a certain time, the temperature in the heating area is continuously increased, the working stability and the service life of the heating component are also influenced, and further improvement is needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a heat radiation structure of electric heater, it can be thermal-insulated and the heat dissipation to the heating element.

The purpose of the utility model is realized like this:

a heat dissipation structure of an electric heating furnace comprises a heat shield used for covering the periphery of a heating component, wherein a plurality of air inlets are arranged below the heat shield, and the apertures of the air inlets are gradually reduced from the outside of the heat shield to the inside of the heat shield.

The air inlet holes are conical holes, horn-shaped holes, trapezoidal holes or polygonal conical holes.

The upper part of the heat shield is provided with an air outlet communicated with the outside, and a heat dissipation channel is formed among the air inlet, the inside of the heat shield and the air outlet.

The air inlet holes are arranged at the bottom and/or the side of the heat shield.

The fan assembly used for generating heat dissipation airflow is arranged outside the heat insulation cover, and the heat dissipation airflow is blown from the outside to the inside of the heat insulation cover through the air inlet hole.

And a space is arranged between the heat shield and the heating component.

The electric heating furnace comprises a main body and a panel, wherein the panel is installed on the main body, and a heating component and a heat insulation cover are installed in the main body.

The utility model discloses a set up the inlet port that diminishes gradually by the outside to inside direction aperture of heat exchanger on the heat exchanger, the heat exchanger can separate the high fever that the heating element during operation produced, avoids high fever direct radiation in the main part, and the inlet port can be to the inside radiating effect that plays of heat exchanger, avoids the continuous rising of temperature in the heat exchanger, helps improving the stability and the life-span of heating element work.

The utility model can be widely applied to the conventional electric heating furnace products such as electromagnetic ovens, electric ceramic ovens, etc.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 2 is an enlarged view of a point a in fig. 1.

Fig. 3 is a schematic structural diagram of a second embodiment of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

First embodiment

Referring to fig. 1-2, the electric heating furnace includes a main body 5 and a panel 4, the panel 4 is installed on the main body 5, the heating element 2 and the heat shield 1 are installed in the main body 5, the heat dissipation structure of the electric heating furnace includes the heat shield 1 for covering the periphery of the heating element 2, the heating element 2 and the heat shield 1 are installed in the main body 5, a plurality of air inlets 11 are arranged below the heat shield 1, the aperture of the air inlets 11 gradually decreases from the outside to the inside of the heat shield 1, the air inlets 11 of the embodiment are conical holes, and the air inlets can be replaced by horn holes, trapezoidal holes, polygonal conical holes (such as triangular conical holes) and the like, which can be understood by those skilled in the art. The heat shield 1 is covered on the periphery of the heating component 2, high heat generated around the heating component 2 during working can be isolated, particularly, the high heat can be isolated to avoid direct radiation in the electric heating furnace, the internal temperature rise of the electric heating furnace is effectively avoided, the service life of a circuit board (not shown in the figure) is prolonged, and the air inlet 11 can enable external air of the heat shield 1 to enter the heat shield 1, so that the heat dissipation effect is achieved inside the heat shield 1. The air inlet hole 11 is positioned at one side of the external direction of the furnace body 1 and is an air inlet end, the air inlet hole 11 is positioned at the internal direction of the furnace body 1 and is an air outlet end, when the heating component 2 works, hot air is accumulated in the heat shield 1, the external air is cold air, and is positioned below the heat shield 1, and the hot air is positioned above the heat shield 1, therefore, the external cold air can enter the heat shield 1 through the air inlet hole 11 according to the principle of rising of the hot air and natural convection of the cold air and the hot air, the heat is dissipated from the inside of the heat shield 1, the temperature in the heat shield 1 is effectively prevented from rising continuously when the heating component 2 works continuously, the working stability and the service life of the heating component 2 are improved, because the aperture of the air inlet hole 11 is gradually reduced from the outside to the inside direction of the heat shield 1, when the external cold air enters the heat shield 1 through the air inlet hole 11, the structural design that the, the temperature difference degree of cold and hot air is further promoted, the radiating effect is better, the convection degree of the cold and hot air is further promoted, so that the high heat of the working time of the heating component 2 is further prevented from penetrating through the air inlet hole 11 to radiate towards the outside of the heat shield 1, and the internal part of the electric heating furnace is further ensured to be at a relatively lower working temperature.

Furthermore, the upper part of the heat shield 1 is provided with an air outlet 12 communicated with the outside, a heat dissipation channel is formed among the air inlet 11, the inside of the heat shield 1 and the air outlet 12, the heat dissipation channel is formed from bottom to top, natural air convection from bottom to top can be formed, heat dissipation airflow is formed, and active convection heat dissipation is realized. The connection of the air outlet 12 to the outside can be implemented in various ways, for example, as described in this embodiment, an air outlet 12 communicating with the heat shield 1 is provided above the main body 5, and an air outlet 12 communicating with the outside can also be directly provided on the heat shield 1, which can be understood by those skilled in the art.

Further, the air inlet holes 11 are arranged at the bottom and/or the side of the heat shield 1, and the air inlet holes 11 are only arranged at the bottom of the heat shield 1 in the embodiment.

Further, there is the interval between heat exchanger 1 and the heating element 2, guarantees to have sufficient space to make the circulation of air, satisfies the realization needs of air convection.

Second embodiment

Referring to fig. 3, the heat dissipating structure of the electric heating furnace is mainly different from the first embodiment in that a fan assembly 3 for generating a heat dissipating air flow is provided outside the heat shield 1, and the heat dissipating air flow is blown from the outside of the heat shield 1 to the inside through an air inlet hole 11. The fan assembly 3 can form a heat dissipation airflow for actively supplying air, so that the speed of the air outside the heat shield 1 flowing into the heat shield 1, namely the speed of the heat dissipation airflow of the heat dissipation channel is increased, and the heat dissipation effect in the heat shield 1 is further improved.

Other parts not described above, like the first embodiment, are not repeated.

The foregoing is a preferred embodiment of the present invention showing and describing the basic principles, main features and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, but rather that various changes and modifications may be made without departing from the spirit and scope of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. The heat dissipation structure of the electric heating furnace comprises a heat insulation cover (1) used for covering the periphery of a heating component (2), and is characterized in that a plurality of air inlets (11) are arranged below the heat insulation cover (1), and the apertures of the air inlets (11) are gradually reduced from the outside to the inside of the heat insulation cover (1).

2. The heat dissipating structure of an electric heating furnace as claimed in claim 1, wherein the air intake holes (11) are formed in a conical shape, a flared shape, a trapezoidal shape, or a polygonal tapered shape.

3. The heat dissipation structure of an electric heating furnace as claimed in claim 1, wherein the upper portion of the heat shield (1) is provided with an air outlet (12) communicated with the outside, and a heat dissipation channel is formed among the air inlet (11), the inside of the heat shield (1) and the air outlet (12).

4. The heat dissipation structure of an electric heating furnace as claimed in claim 1, wherein the air intake holes (11) are arranged at the bottom and/or side of the heat shield (1).

5. The heat dissipating structure of an electric heating furnace as claimed in claim 1, wherein the heat shield (1) is provided at an outside thereof with a fan assembly (3) for generating a heat dissipating air flow which is blown from the outside of the heat shield (1) to an inside direction through the air intake holes (11).

6. The heat dissipating structure of an electric heating furnace as claimed in claim 1, wherein the heat shield (1) is spaced apart from the heat generating component (2).

7. The heat dissipating structure of an electric heating furnace according to any one of claims 1 to 6, wherein the electric heating furnace comprises a main body (5) and a panel (4), the panel (4) is mounted on the main body (5), and the heating element (2) and the heat shield (1) are mounted in the main body (5).