CN209960741U - Novel high-temperature fluid electric heater - Google Patents
Novel high-temperature fluid electric heater Download PDFInfo
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- CN209960741U CN209960741U CN201822010453.9U CN201822010453U CN209960741U CN 209960741 U CN209960741 U CN 209960741U CN 201822010453 U CN201822010453 U CN 201822010453U CN 209960741 U CN209960741 U CN 209960741U
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Abstract
The utility model discloses a novel high temperature fluid electric heater belongs to firing equipment technical field. The novel high-temperature fluid electric heater comprises a container and an electric heating element arranged on the container; the container is a conical container and is provided with an inlet and an outlet, and the caliber of the inlet of the container is larger than that of the outlet of the container. Compared with the traditional structure, the highest point temperature of the container or the electric heating element is reduced, so that the service life of the electric heating element is prolonged. The same temperature of the electric heating element is more suitable for heating the high-temperature medium.
Description
Technical Field
The utility model relates to a firing equipment technical field, in particular to novel high temperature fluid electric heater.
Background
The traditional fluid heater adopts a circulating heater structure, an electric heating element is inserted into a pipeline or a container, and a fluid medium flows through the pipeline or the container and exchanges heat with the electric heating element to achieve the purpose of heating.
Such conventional fluid heaters have the following disadvantages: because of the constant power density output of the electric heating elements, the temperature of the electric heating elements close to the outlet is the highest, the temperature of the electric heating elements close to the inlet is the lowest, the temperature of the electric heating elements in the length direction is inconsistent, and the higher the temperature is, the more easily the electric heating elements are damaged.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a novel high temperature fluid electric heater to solve current fluid heater when using, the electric heating element temperature in exit is very high, causes the problem of damage easily.
In order to solve the technical problem, the utility model provides a novel high-temperature fluid electric heater, which comprises a container and an electric heating element arranged on the container; wherein the content of the first and second substances,
the container is a conical container and is provided with an inlet and an outlet, and the caliber of the inlet of the container is larger than that of the outlet of the container.
Optionally, the electrical heating element is located inside or outside the container.
Optionally, the electric heating element is closely attached to the container.
Optionally, the power densities of the electric heating elements are the same.
The utility model provides a novel high-temperature fluid electric heater, which comprises a container and an electric heating element arranged on the container; the container is a conical container and is provided with an inlet and an outlet, and the caliber of the inlet of the container is larger than that of the outlet of the container. Compared with the traditional structure, the highest point temperature of the container or the electric heating element is reduced, so that the service life of the electric heating element is prolonged. The same temperature of the electric heating element is more suitable for heating the high-temperature medium.
Drawings
FIG. 1 is a schematic diagram of a novel high temperature fluid electric heater with an electric heating element located outside the vessel;
fig. 2 is a schematic diagram of the structure of the novel high-temperature fluid electric heater when the electric heating element is positioned in the container.
Detailed Description
The following provides a detailed description of the novel high-temperature fluid electric heater according to the present invention with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more fully apparent from the following description and appended claims. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.
Example one
The utility model provides a novel high-temperature fluid electric heater, which comprises a container 1 and an electric heating element 2 arranged on the container. The power density of the electric heating elements 2 is the same. Specifically, the electric heating element 2 can be located outside or inside the container 1, and is closely attached to the container 1.
The container 1 is a conical container and is provided with an inlet 11 and an outlet 12, and the caliber of the inlet 11 is larger than that of the outlet 12.
Referring to fig. 1, the electric heating element 2 is located outside the container 1. When the novel high-temperature fluid electric heater is used for heating fluid, the fluid enters from the inlet 11, the electric heating element 2 heats the container 1, the container 1 heats the fluid passing through the interior of the container, and the heated fluid flows out from the outlet 12.
Referring to fig. 2, the electric heating element 2 is located inside the container 1. When the novel high-temperature fluid electric heater is used for heating fluid, the fluid enters from the inlet 11, the electric heating element 2 directly heats the fluid passing through the inside of the container 1, and the heated fluid flows out from the outlet 12.
The utility model provides a novel high temperature fluid electric heater is based on fluid power computational formula:
Q＝α×A×(T1-T2)
W＝α×(T1-T2)
wherein Q is the power required for heating the fluid; α is the convective heat transfer coefficient between the fluid and the heating element; a is the heat exchange area of the heating element; w is the power density W/m2(i.e., the power allocated per unit area); t1 is the vessel or element wall temperature; t2 is the temperature of the heated fluid.
The container 1 is a conical container, the outer part or the inner part of the container is tightly attached with the electric heating element 2, the power density of the electric heating element 2 is the same, the power density on a unit container is also the same, and the temperature difference between the container and the fluid is inversely proportional to the convective heat transfer coefficient alpha, namely, the higher the convective heat transfer coefficient alpha is, the smaller the temperature difference between the container and the fluid is. The convective heat transfer coefficient alpha is related to the flow velocity of the fluid to be cooled, and the higher the flow velocity, the higher the convective heat transfer coefficient alpha. The flow velocity of the fluid is higher from the large caliber of the inlet to the small caliber of the outlet, and the flow velocity is further increased as the density of most of the fluid is reduced along with the increase of the temperature. Thus, the convective heat transfer coefficient α of the fluid at the inlet is lower than the convective heat transfer coefficient α at the outlet, and the temperature difference between the container or the heating element at the outlet is smaller than that at the inlet. The temperature of the fluid is gradually increased from the large caliber of the inlet to the small caliber of the outlet, and compared with the traditional structure, the highest point temperature of the container or the electric heating element is reduced, so that the service life of the electric heating element is prolonged. The same temperature of the electric heating element is more suitable for heating the high-temperature medium.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and any modification and modification made by those skilled in the art according to the above disclosure are all within the scope of the claims.
Claims (2)
1. The novel high-temperature fluid electric heater is characterized by comprising a container and an electric heating element arranged on the container; wherein the content of the first and second substances,
the container is a conical container and is provided with an inlet and an outlet, and the caliber of the inlet of the container is larger than that of the outlet of the container;
the electric heating element is positioned inside or outside the container; the power densities of the electric heating elements are the same.
2. A novel high temperature fluid electric heater as claimed in claim 1, wherein said electric heating element is in close proximity to said vessel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822010453.9U CN209960741U (en) | 2018-11-30 | 2018-11-30 | Novel high-temperature fluid electric heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822010453.9U CN209960741U (en) | 2018-11-30 | 2018-11-30 | Novel high-temperature fluid electric heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209960741U true CN209960741U (en) | 2020-01-17 |
Family
ID=69234052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822010453.9U Active CN209960741U (en) | 2018-11-30 | 2018-11-30 | Novel high-temperature fluid electric heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209960741U (en) |
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2018
- 2018-11-30 CN CN201822010453.9U patent/CN209960741U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 89, Ximei Road, Xinwu District, Wuxi City, Jiangsu Province, 214000 Patentee after: Wuxi Huaneng Electric Heating Equipment Co.,Ltd. Address before: No. 89, Ximei Road, Xinwu District, Wuxi City, Jiangsu Province, 214000 Patentee before: HUANENG WUXI ELECTROTHERMAL EQUIPMENT Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |