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Electric heater

A technology of electric heaters and electric heating elements, applied in water heaters, fluid heaters, lighting and heating equipment, etc., can solve the problems of uneven surface temperature of electric heaters

Pending Publication Date: 2019-06-28
无锡华能电热器材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide an electric heater to solve the problem of uneven surface temperature of the traditional electric heater

Method used

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Embodiment 1

[0021] The invention provides an electric heater, the structure of which is as follows figure 1 shown. The electric heater includes a container 1 and a heat exchange tube 2 . The container 1 is used for fluid entry; the heat exchange tube 2 is inserted in the container 1 to heat the incoming fluid and flow out.

[0022] Specifically, the structure of the heat exchange tube 2 is as follows figure 2 shown. The heat exchange tube 2 includes a metal tube 21, the metal tube 21 is a steel pipe, the side of the metal tube 21 is welded with finned tubes 22, and the electric heating element 3 is installed between the finned tubes 22. The schematic cross-sectional view of the electric heater is as image 3 shown. Those skilled in the art understand that the electric heating element 3 can be welded on the flange (not shown in the figure), and then the flange is connected with the container 1 . read on figure 2 , the finned tube 22 is a hollow fin, one end of which is open and co...

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Abstract

The invention discloses an electric heater, and belongs to the technical field of electric heating. The electric heater comprises a container and a heat exchange tube; the container is used for allowing fluid to flow in; the heat exchange tube is inserted into the container and used for heating the fluid flowing into the heat exchange tube and allowing the fluid to flow out; the heat exchange tubecomprises a metal tube, fin tubes are welded to the side face of the metal tube, the interiors of the fin tubes are hollow, and electric heating elements are inserted among the fin tubes; the fluid is heated when the fluid flows through the electric heating elements and then returns back through the hollow fin tubes; and hot fluid and cold fluid inside and outside the fin tubes achieve heat exchange again. From the view of the transverse cross section, on the one hand, the fluid is heated by the electric heating elements, on the other hand, the fluid achieves heat exchange with the hot fluidin the fin tubes, therefore, the wall temperature of the surfaces of the electric heating tubes is uniformized, the surface temperature of the electric heater is greatly lowered, and meanwhile the service life of the electric heater is prolonged.

Description

technical field [0001] The invention relates to the technical field of electric heating, in particular to an electric heater. Background technique [0002] The traditional circulating electric heater is inserted into the container with an immersion electric heater. The container has an inlet and an outlet. The fluid flows through the electric heater by the power of the pump or the compressor, so that the fluid can be heated; But at the same time, there are the following disadvantages: the surface temperature of the electric heater tube is uneven, the tube wall temperature is low near the fluid inlet, and the tube wall temperature is high near the fluid outlet. Due to uneven temperature, the higher the temperature, the shorter the life of the heating element, which affects the life of the entire heater. Contents of the invention [0003] The object of the present invention is to provide an electric heater to solve the problem of non-uniform surface temperature of the tradi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24H1/10F24H9/18
Inventor 戚洪明
Owner 无锡华能电热器材有限公司
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