A heating body with non-uniformly arranged power density

Abstract

The utility model discloses a kind of heating body with non-uniformly arranged power density, including base pipe, heating coating coated on base pipe and wiring post arranged on base pipe, the base pipe includes water inlet end and water outlet end, the pipe body of the base pipe is divided into several segments heating area from water inlet end to water outlet end, different the heating coating of different thickness and / or the heating coating of different material is coated in different heating area.The utility model is coated with the heating coating of different thickness and / or different material on base pipe to make the density of heating body non-uniformly arranged, so that heating body can generate different heat in different area, so as to achieve the effect of balanced heat distribution, and can effectively avoid the occurrence of local overheating phenomenon.

Description

Technical Field

[0001] This utility model relates to the field of drinking water equipment technology, and in particular to a heating element with a non-uniform power density distribution. Background Technology

[0002] In drinking water equipment, the heating element is the core component, and its performance directly affects the heating efficiency, safety, and service life of the equipment. Currently, the instant heating elements widely used in drinking water equipment are mostly uniformly coated with heating material, meaning the heating material is evenly distributed on the surface of the heating element. However, this uniformly coated heating element presents several problems in drinking water equipment: Firstly, the water temperature varies at different locations within the heating element, and uniform heating leads to an overall temperature rise during the heating process, easily causing localized overheating; secondly, the power density requirements of the heating element in drinking water equipment differ for different areas. Utility Model Content

[0003] The present invention aims to overcome the defects in the prior art by providing a heating element with a non-uniform power density. This heating element is made by coating a base tube with a heating coating of different thicknesses and / or different materials to achieve a non-uniform density distribution. This allows the heating element to generate different amounts of heat in different areas, thereby achieving a balanced heat distribution and effectively preventing local overheating.

[0004] To achieve the above objectives, this utility model provides a heating element with a non-uniform power density, including a base tube, a heating coating coated on the base tube, and terminals disposed on the base tube. The base tube includes an inlet end and an outlet end. The tube body of the base tube is divided into several heating zones from the inlet end to the outlet end. Different heating zones are coated with heating coatings of different thicknesses and / or with heating coatings of different materials.

[0005] The power density of the heating element is further configured such that it gradually decreases from the inlet end to the outlet end.

[0006] The method is further configured such that the heating coating on the base tube is formed by coating the same material and its thickness decreases linearly or gradually from the water inlet end to the water outlet end.

[0007] The method is further configured such that the thickness of the heating coating on the base tube is the same, and the power density of the selected material of the heating coating in several heating zones arranged from the water inlet to the water outlet gradually decreases.

[0008] The base tube is further configured to be made of quartz, ceramic, or silicon nitride.

[0009] The material of the heating coating is further configured to be at least one of metal alloy, ceramic, plastic, and graphene.

[0010] The heating element is further configured such that, during use, the inlet end is at the bottom and the outlet end is at the top.

[0011] Compared with the prior art, the present invention has a simple and reasonable structure. By coating the base pipe with heating coatings of different thicknesses and / or different materials, a heating element with a power density that gradually decreases from the water inlet end to the outlet end is obtained. In this way, the heat generated by the heating element gradually decreases as the water temperature rises, thereby achieving the effect of balanced heat distribution and effectively avoiding the occurrence of local overheating. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a heating element with non-uniform power density according to the present invention; Figure 2 This is a schematic cross-sectional view of the base tube and the heating coating in Example 1; Figure 3 This is a schematic cross-sectional view of the base tube and the heating coating in Example 2; Figure 4 This is a schematic cross-sectional view of the base tube and the heating coating in Example 3.

[0013] The following reference numerals are marked on the accompanying drawings: 10. Base pipe; 11. Inlet end; 12. Outlet end; 13. Heating area; 20. Heating coating; 30. Terminal. Detailed Implementation

[0014] The following describes a specific embodiment of the present invention in detail with reference to the accompanying drawings. However, it should be understood that the scope of protection of the present invention is not limited to the specific embodiment.

[0015] This utility model discloses a heating element with non-uniform power density distribution, such as... Figure 1 As shown, it includes a base pipe 10 with an inlet end 11 and an outlet pipe, a heating coating 20 coated on the base pipe 10 for heating the water flowing through the base pipe 10, and terminals 30 disposed at both ends of the base pipe 10. The base pipe 10 is made of a material with good high temperature resistance and insulation properties, such as quartz, ceramic, or silicon nitride. The heating coating 20 is made of at least one of metal alloy (nickel-chromium alloy), ceramic, plastic, and graphene.

[0016] In this embodiment, as Figure 1As shown, the tube body of the base tube 10 is divided into several heating zones 13 from the inlet end 11 to the outlet end 12 according to the different power density requirements of different areas. Different heating zones 13 are coated with heating coatings 20 of different thicknesses and / or different materials, so that the power density of the heating element is non-uniformly distributed. Preferably, the power density of the heating element gradually decreases from the inlet end 11 to the outlet end 12. This makes the power density of the low-temperature area of ​​the heating element corresponding to the inlet section the largest (generating the most heat) and the power density of the high-temperature area of ​​the outlet section the smallest (generating the least heat). In this way, the heating element carries more and more heat with the flowing water, and the heat generated is reduced accordingly, thereby achieving the effect of balanced heat distribution and avoiding local overheating. The heating element is preferably used in a vertical position with the inlet end 11 at the bottom and the outlet end 12 at the top. This allows the water to better fill the interior of the base tube 10, thereby reducing the generation of air bubbles on the inner wall of the base tube 10.

[0017] In the low-temperature inlet water area, although the power density of the heating element is high, the heat in this area can be quickly carried away due to the low water temperature. The heating element has a good heat dissipation effect, which can avoid overheating of the surface of the heating element in this area. At the same time, it greatly reduces the temperature conditions for scale formation, which plays a significant role in preventing the aging and failure of the heating coating 20, or even dry burning damage.

[0018] In the high-temperature zone of the outlet water, the power density of the heating element is low. In this zone, the heat generated by the heating coating 20 is reduced, the heat dissipation effect is improved, local overheating can be prevented, and the degree of high-temperature semi-dry burning caused by bubbles adhering to the inner wall during boiling is reduced, thus extending the performance and life of the coating. At the same time, as the local temperature of the heating element decreases, the possibility of scaling is reduced, and the thermal efficiency of the heating element can be maintained at a high level.

[0019] Example 1

[0020] like Figure 2 As shown, the heating coating 20 on the base tube 10 is formed by coating the same heating material and its thickness decreases linearly from the water inlet end 11 to the water outlet end 12. By using heating coatings 20 of different thicknesses, the power density of the heating element gradually decreases linearly from the water inlet end 11 to the water outlet end 12, so that the heat generated by the heating element gradually decreases as the water temperature rises. This can achieve uniform heat distribution and avoid local overheating.

[0021] Implementation 2

[0022] like Figure 3As shown, the heating coating 20 on the base tube 10 is formed by coating the same heating material and its thickness is arranged to gradually decrease from the water inlet end 11 to the water outlet end 12. By using heating coatings 20 of different thicknesses, the power density of the heating element decreases linearly from the water inlet end 11 to the water outlet end 12, so that the heat generated by the heating element gradually decreases as the water temperature rises. This can achieve uniform heat distribution and avoid local overheating.

[0023] Example 3

[0024] like Figure 4 As shown, the heating coating 20 on the base tube 10 has the same thickness, and the power density of the selected material in the heating zone 13 arranged from the water inlet 11 to the water outlet 12 gradually decreases. By using heating coatings 20 of different materials, the power density of the heating element decreases linearly from the water inlet 11 to the water outlet 12, so that the heat generated by the heating element gradually decreases as the water temperature rises. This can achieve uniform heat distribution and avoid local overheating.

[0025] Compared with the prior art, the present invention has a simple and reasonable structure. By coating the base pipe with heating coatings of different thicknesses and / or different materials, a heating element with a power density that gradually decreases from the water inlet end to the outlet end is obtained. In this way, the heat generated by the heating element gradually decreases as the water temperature rises, thereby achieving the effect of balanced heat distribution and effectively avoiding the occurrence of local overheating.

[0026] The above-disclosed embodiments are merely examples of the present utility model. However, the present utility model is not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A heating element with non-uniform power density distribution, comprising a base tube, a heating coating applied to the base tube, and terminals disposed on the base tube, wherein the base tube includes an inlet end and an outlet end, characterized in that, The base pipe is divided into several heating zones from the inlet to the outlet, and different heating zones are coated with heating coatings of different thicknesses and / or with heating coatings of different materials.

2. A heating element with non-uniform power density arrangement according to claim 1, characterized in that, The power density of the heating element gradually decreases from the inlet end to the outlet end.

3. A heating element with non-uniform power density arrangement according to claim 2, characterized in that, The heating coating on the base tube is formed by coating the same material and its thickness decreases linearly or segmentally from the water inlet end to the water outlet end.

4. A heating element with non-uniform power density arrangement according to claim 2, characterized in that, The heating coating on the base tube has the same thickness, and the power density of the selected material in the heating coating gradually decreases in several heating zones arranged from the water inlet to the water outlet.

5. A heating element with non-uniform power density according to claim 1, characterized in that, The base tube is made of quartz, ceramic, or silicon nitride.

6. A heating element with non-uniform power density arrangement according to claim 1, characterized in that, The material of the heating coating is at least one of metal alloy, ceramic, plastic, and graphene.

7. A heating element with non-uniform power density according to claim 1, characterized in that, The heating element is placed with the water inlet at the bottom and the water outlet at the top during use.

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