Electric heating assembly and electric heating device

Abstract

The utility model discloses an electric heating assembly and an electric heating device. The electric heating assembly comprises an electric heating pipe. The electric heating pipe comprises an electric heating shell, a heating wire and a heat-conducting medium, wherein the space between the heating wire and the electric heating shell is filled with the heat-conducting medium. Wherein the section of the electric heating shell is flat, and the electric heating shell is made of stainless steel. The technical problems that the section of an existing electric heating pipe is generally round, the distance between a heating wire and a round pipe is large, heat loss is large, and the heat transfer effect is poor are solved, and the technical effects of heat concentration and heat transfer efficiency improvement are achieved.

Description

Technical Field

[0001] This utility model belongs to the field of electric heating technology, and more specifically, it relates to an electric heating component and an electric heating device. Background Technology

[0002] Electric heating elements (also known as electric heating rods) are electrical components that convert electrical energy into heat energy. They are key components in the field of electric heating and are widely used in home appliances, automobiles, textiles, food, machinery manufacturing, power plants, water heating appliances and other fields.

[0003] However, the existing electric heating tubes are usually circular in cross-section, resulting in a large distance between the heating wire and the circular tube, leading to high heat loss and poor heat transfer. Utility Model Content

[0004] To address the problems of high heat loss and poor heat transfer in existing circular cross-section electric heating tubes, the purpose of this invention is to provide an electric heating assembly. The electric heating assembly includes an electric heating tube, which comprises: an electric heating shell, a heating wire, and a heat-conducting medium filled between the heating wire and the electric heating shell; wherein the electric heating shell has a flat cross-section and is made of stainless steel.

[0005] Furthermore, the ratio of the bottom length to the height of the flat electric heating shell cross-section is [1.5-3]:1.

[0006] Furthermore, the cross-section of the electric heating shell is semi-elliptical.

[0007] Furthermore, the cross-section of the electric heating wire is elliptical.

[0008] Furthermore, the electric heating wire is arranged in a spiral shape inside the electric heating housing.

[0009] Furthermore, the electric heating housing includes a heating section and wiring sections disposed at both ends of the heating section, wherein the heating section has a flat cross-section and the wiring sections have a circular cross-section.

[0010] This application provides an electric heating device that uses any of the electric heating components described above.

[0011] Furthermore, the electric heating device also includes a stainless steel outer shell and a heating fixing component that fixes the electric heating tube inside the stainless steel outer shell; wherein the heating fixing component is made of stainless steel; and the stainless steel outer shell is a heating plate.

[0012] Furthermore, the stainless steel casing and electric heating element are welded together.

[0013] Furthermore, the stainless steel outer shell serves as the soleplate of an electric iron.

[0014] Furthermore, the stainless steel outer shell is disc-shaped.

[0015] The technical effects and advantages of this utility model are as follows:

[0016] 1. By designing the cross-section of the electric heating element housing to be flat, compared to the traditional circular cross-section, the heat generated by the flat-section electric heating element is more concentrated. The distance between the heating wire and the heating element housing is smaller, resulting in less heat loss and better heat transfer. Furthermore, based on the flat-section design of the electric heating element, both the heating element housing and the outer shell of the electric heating assembly are made of stainless steel, replacing the traditional aluminum housing. This further improves the heat transfer effect of the electric heating assembly while maintaining the concentrated heat.

[0017] 2. By setting the cross-section of the electric heating wire to be elliptical instead of the conventional circle, the heat generated by the electric heating wire can be more concentrated, which in turn makes the heat inside the electric heating shell with a flat cross-section more concentrated, thus making the heat of the electric heating tube more concentrated. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an electric heating tube provided by this utility model;

[0019] Figure 2 yes Figure 1 Cross-sectional view of the electric heating element;

[0020] Figure 3 yes Figure 1 A schematic cross-sectional view of the heating shell.

[0021] Figure 4 This is a schematic diagram of the structure of an electric heating device provided by this utility model;

[0022] Figure 5 This is a schematic diagram of another type of electric heating tube provided by this utility model;

[0023] Figure 6 This is a schematic diagram of another electric heating device provided by this utility model.

[0024] In the picture:

[0025] 10. Stainless steel casing; 20. Electric heating element; 21. Heating housing; 22. Heating wire; 23. Heat transfer medium; 24. Heating section; 25. Wiring section; 30. Heating fixture. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0027] Combination Figures 1 to 3 The electric heating element 20 includes, for example, an electric heating shell 21, a heating wire 22, and a heat-conducting medium 23 filled between the heating wire 22 and the electric heating shell 21; wherein the electric heating shell 21 has a flat cross-section and is made of stainless steel. For example, the heat-conducting medium 23 can be magnesium oxide powder filled between the heating wire 22 and the electric heating shell 21. Magnesium oxide powder has good thermal conductivity and insulation properties, and filling the gap between the electric heating shell 21 and the heating wire 22 can effectively promote heat transfer, improve heating efficiency, and enhance insulation protection. Alternatively, the heat-conducting medium 23 can also be silicon nitride, which has both thermal conductivity and insulation properties.

[0028] The electric heating housing 21 is provided with only a single heating wire 22. For example, the electric heating housing 21 may contain a single heating wire 22 or a group of multiple heating wires 22 twisted together.

[0029] Understandably, by setting the cross-section of the electric heating housing 21 to a flat shape, compared to the traditional circular cross-section electric heating housing 21, the heat generated by the flat-section electric heating tube 20 is more concentrated. The distance between the heating wire 22 and the electric heating housing 21 is shorter, resulting in less heat loss and better heat transfer. Furthermore, based on the flat cross-section of the electric heating tube 20, both the electric heating housing 21 and the outer shell of the electric heating component are made of stainless steel, replacing the traditional aluminum housing and outer shell. This further improves the heat transfer effect of the electric heating component on top of the concentrated heat.

[0030] Preferably, the ratio of the bottom length to the height of the flat electric heating shell 21 is [1.5-3]:1. For example, the ratio of the bottom length to the height of the flat electric heating shell 21 can be 1.5:1, 2:1, or 3:1.

[0031] Furthermore, in combination Figure 3The electric heating housing 21 has a semi-elliptical cross-section, where a:b is 3:1. For example, the bottom of the electric heating housing 21 is the heating side. It can be understood that by setting the cross-section of the heating wire 22 to an ellipse, rather than a conventional circle, the heat generated by the heating wire 22 can be more concentrated, further concentrating the heat inside the flattened electric heating housing 21, thus making the heat from the electric heating tube 20 more concentrated.

[0032] Furthermore, the single heating wire 22 is arranged in a spiral shape inside the electric heating housing 21. It can be understood that by using a spiral heating wire 22, the length of the heating wire 22 can be maximized within the limited electric heating housing 21, so that the electric heating tube 20 can generate as much heat as possible, thereby further improving the heating effect of the electric heating tube 20, and thus further improving the heating effect of the electric heating assembly.

[0033] Furthermore, the electric heating housing 21 includes a heating section 24 and wiring sections 25 disposed at both ends of the heating section 24. The heating section 24 has a flat cross-section, and the wiring section 25 has a circular cross-section. It is understood that the raw material for producing the electric heating housing 21 is usually a circular stainless steel tube, which needs to be flattened to obtain the flat-section electric heating housing 21. The wiring section 25's main function is to connect wires; therefore, only the cross-section of the heating section 24 of the electric heating housing 21 is processed into a flat shape, thereby improving the heating effect of the electric heating component while avoiding unnecessary cost increases.

[0034] This invention provides an electric heating device. The device uses any of the electric heating components described above for heating. In one specific embodiment, the device heats the object directly through an exposed electric heating element 20. For example, the electric heating element 20 is an electric heating element installed inside a bread maker.

[0035] In one specific embodiment, combined with Figures 4 to 6 The electric heating device includes, for example, a stainless steel outer shell 10 and an electric heating tube 20 disposed inside the stainless steel outer shell 10, wherein the stainless steel outer shell 10 is a heating plate. The electric heating tube 20 is located inside the stainless steel outer shell 10, and the object to be heated is located outside the stainless steel outer shell 10. The heat generated by the electric heating tube 20 is transferred to the object to be heated through the stainless steel outer shell 10.

[0036] For example, the stainless steel outer casing 10 can be connected to the electric heating element 20, with the electric heating element 20 fixed inside the stainless steel outer casing 10, or the stainless steel outer casing 10 can be placed over the electric heating element 20 without contacting it; there are no restrictions on this. The shape of the electric heating element 20 corresponds to the heating device it is used in; there are no restrictions on this either.

[0037] In one specific embodiment, the electric heating component is an electric iron, the stainless steel outer shell 10 is the soleplate of the electric iron, and the corresponding electric heating tube 20 is V-shaped, with the V-shaped electric heating tube 20 welded to the soleplate of the electric iron.

[0038] In one specific embodiment, the electric heating component can also be the base of an electric stove or an electric kettle. The stainless steel outer shell 10 is a disc-shaped heating plate, and the corresponding electric heating tube 20 can be annular, U-shaped, coiled, or other shapes. For example, an arc-shaped electric heating tube 20 is welded to the disc-shaped heating plate to form the heating base of the electric stove.

[0039] In one specific embodiment, the electric heating device further includes a heating fixing member 30 for fixing the electric heating tube 20 inside the stainless steel housing 10; wherein the heating fixing member 30 is made of stainless steel. For example, the heating fixing member 30 may be welded to the stainless steel housing 10, or it may be integrally formed with the stainless steel housing 10, or the stainless steel housing 10 may have a positioning post, and the heating fixing member 30 may have a positioning hole that mates with the positioning post to achieve the assembly between the heating fixing member 30 and the stainless steel housing 10.

[0040] In the description of this utility model, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0041] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. An electric heating assembly, characterized in that, The electric heating assembly includes an electric heating tube (20), which includes an electric heating shell (21), a heating wire (22), and a heat-conducting medium (23) filled between the heating wire (22) and the electric heating shell (21); wherein the electric heating shell (21) has a flat cross-section and is made of stainless steel; the heating wire (22) is a single set.

2. The electric heating assembly according to claim 1, characterized in that, The ratio of the bottom length to the height of the flat electric heating shell (21) is [1.5-3]:

1.

3. The electric heating assembly according to claim 1 or 2, characterized in that, The cross-section of the electric heating shell (21) is semi-elliptical.

4. The electric heating assembly according to claim 3, characterized in that, The heating wire (22) has an elliptical cross-section.

5. The electric heating assembly according to claim 4, characterized in that, The heating wire (22) is spirally arranged inside the electric heating housing (21).

6. The electric heating assembly according to claim 1, characterized in that, The electric heating housing (21) includes a heating section (24) and wiring sections (25) disposed at both ends of the heating section (24), wherein the heating section (24) has a flat cross-section and the wiring section (25) has a circular cross-section.

7. An electric heating device, characterized in that, The electric heating device uses the electric heating component as described in any one of claims 1-6.

8. The electric heating device according to claim 7, characterized in that, The electric heating device further includes a stainless steel shell (10) and a heating fixing member (30) for fixing the electric heating tube (20) inside the stainless steel shell (10); wherein the heating fixing member (30) is made of stainless steel; and the stainless steel shell (10) is a heating plate.

9. The electric heating device according to claim 8, characterized in that, The stainless steel outer shell (10) is welded to the electric heating tube (20).

10. The electric heating device according to claim 8, characterized in that, The stainless steel outer shell (10) is the soleplate of the electric iron.

11. The electric heating device according to claim 8, characterized in that, The stainless steel outer shell (10) is a disc-shaped heating plate.

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