CN219160603U

CN219160603U - Fluid electric heater

Info

Publication number: CN219160603U
Application number: CN202223105547.7U
Authority: CN
Inventors: 戚洪明
Original assignee: Wuxi Huaneng Electric Heating Equipment Co ltd
Current assignee: Wuxi Huaneng Electric Heating Equipment Co ltd
Priority date: 2022-11-22
Filing date: 2022-11-22
Publication date: 2023-06-09
Anticipated expiration: 2032-11-22

Abstract

The utility model relates to a fluid electric heater, comprising: the infusion tubes are arranged in an annular array; the inlet flange is provided with a plurality of inlet holes, and one end of the infusion tube is fixed in the inlet holes and corresponds to the inlet holes one by one; the outlet flange is provided with a plurality of outlet holes, and the other end of the infusion tube is fixed in the outlet holes and corresponds to the outlet holes one by one; the heating pipe is fixed on the infusion tube; the wiring boards are provided with a plurality of wiring boards, and the wiring boards are provided with the end parts of the heating pipes; the connecting plate, the connecting plate is equipped with a plurality of, and the both ends of connecting plate are installed on two adjacent heating pipes, and are located the tip of heating pipe, and wiring board and connecting plate make a plurality of heating pipes form the series connection. According to the fluid electric heater provided by the utility model, the heating pipe is fixed on the infusion tube through the process of the shrinkage tube, so that the overall structure is formed, the heat exchange efficiency can be improved, the connection is reliable, the falling off is difficult, and the structure is compact.

Description

Fluid electric heater

Technical Field

The utility model relates to a heater, in particular to a fluid electric heater.

Background

In the existing heating device, the infusion tube and the heating device are movably connected, for example, an instant heating type superheater disclosed in China patent 202220978217X is coated on a heat conduction tube body by a heating film, and because the heating film is arranged on the heat conduction tube body at the rear part, gaps inevitably exist, heat conduction is affected by the gaps, and meanwhile, the installation of the heating film is unstable and easy to fall off.

Disclosure of Invention

In order to solve the problems, the utility model provides a fluid electric heater with a heating pipe and a transfusion pipe which are of an integral structure and high heat exchange efficiency, which comprises the following specific technical scheme:

a fluid electric heater comprising: the infusion tubes are arranged in an annular array; the infusion tube comprises an inlet flange, a plurality of infusion tubes and a plurality of air inlets, wherein one end of each infusion tube is fixed in each air inlet and corresponds to each air inlet one by one; the outlet flange is provided with a plurality of outlet holes, and the other end of the infusion tube is fixed in the outlet holes and corresponds to the outlet holes one by one; the heating pipe is fixed on the infusion tube; the wiring boards are provided with a plurality of wiring boards, and the wiring boards are arranged at the end parts of the heating pipes; the connecting plate, the connecting plate is equipped with a plurality of, the both ends of connecting plate are installed two adjacent heating pipes on, and are located the tip of heating pipe, the wiring board with the connecting plate makes a plurality of heating pipes form the series connection.

Preferably, the infusion tube further comprises a housing, wherein two ends of the housing are connected with the inlet flange and the outlet flange, and the infusion tube is located in the housing.

Preferably, the infusion tube further comprises an insulating layer, wherein the insulating layer is wrapped on the outer circular surface of the infusion tube, and the heating tube is arranged on the insulating layer.

Further, the insulating layer comprises ceramic and/or magnesia powder.

Preferably, the infusion tube further comprises a temperature sensor, and the temperature sensor is arranged on the infusion tube.

Preferably, a free bending section is arranged between the infusion tube and the inlet flange and between the infusion tube and the outlet flange.

Compared with the prior art, the utility model has the following beneficial effects:

according to the fluid electric heater provided by the utility model, the heating pipe is fixed on the infusion tube through the process of the shrinkage tube, so that the overall structure is formed, the heat exchange efficiency can be improved, the connection is reliable, the falling off is difficult, and the structure is compact.

Drawings

FIG. 1 is a schematic diagram of a fluid electric heater;

FIG. 2 is a front view of a fluid electric heater;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;

FIG. 5 is a schematic view of the structure of the heating tube and the infusion tube.

Detailed Description

The utility model will now be further described with reference to the accompanying drawings.

As shown in fig. 1 to 5, an electric fluid heater includes a fluid pipe 1, an inlet flange 2, an outlet flange 3, a heating pipe 4, a wiring board 7, a communication board 8, and a housing.

The infusion tube 1 is arranged in an annular array, and free bending sections 11 are arranged at two ends of the infusion tube 1. The free bending section 11 has good flexibility, and the thermal expansion of the infusion tube 1 can be partially compensated by itself, so that the stress influence on the welding of the tube plates is reduced, the leakage possibility of welding seams is reduced, and meanwhile, the infusion tube is vibration-resistant, and the service life is prolonged. Simultaneously, the free bending sections 11 at the two ends of the infusion tube 1 reduce the diameter of the tube bundle, the size of the flange and the cost of the equipment.

The inlet flange 2 is provided with a plurality of inlet holes 21 in an array manner, the outlet flange 3 is provided with a plurality of outlet holes 31 in an array manner, the inlet flange 2 and the outlet flange 3 are oppositely arranged, the free bending sections 11 at two ends of the infusion tube 1 are respectively fixed in the inlet holes 21 and the outlet holes 31, and the infusion tube 1 corresponds to the inlet holes 21 and the outlet holes 31 one by one.

The heating pipe 4 is fixed on the infusion tube 1 by adopting a shrinkage pipe process, and an insulating layer 6 is arranged between the heating pipe 4 and the infusion tube 1, wherein the insulating layer 6 comprises ceramic and/or magnesia powder. The insulating layer 6 prevents leakage and improves safety. The ceramic and the magnesia powder can be insulated and have better heat conduction performance.

The wiring board 7 is equipped with two, and one connects the power positive pole, and another connects the power negative pole, and the tip of heating pipe 4 is installed to wiring board 7, and the intercommunication board 8 is equipped with a plurality of, and the tip at two adjacent heating pipes 4 is installed at the both ends of intercommunication board 8, and wiring board 7 and intercommunication board 8 make a plurality of heating pipes 4 form the series connection. Because the heating pipe 4 adopts a steel pipe structure, the resistance of the steel pipe is small, the resistance of the steel pipe can be improved after the steel pipes are connected in series in multiple stages, 220V or 380V power supply can be directly used, transformer equipment is not needed, the volume and the weight can be reduced, the energy consumption is reduced, and the equipment cost is reduced.

The two ends of the cover are connected with the free bending section 11, and the infusion tube 1 is positioned in the cover.

The outside of the housing is also provided with a power connection box and a temperature instrument box, the temperature instrument box is connected with a temperature sensor, and the temperature sensor is arranged on the infusion tube 1. The temperature sensor is used for overtemperature power-off, protecting the heating pipe 4 and the infusion tube 1, and simultaneously detecting the internal temperature of the infusion tube 1.

The outside of the tube bundle of the infusion tubes 1 arranged in the annular array is wrapped with an insulating layer.

The infusion tube 1 and the heating tube 4 outside the infusion tube can tightly connect the infusion tube 1 and the heating tube 4 together through a shrinking process, thereby greatly reducing the volume of the device and greatly increasing the energy transfer between the heating tube 4 and the infusion tube 1. As the infusion tube 1 is generally smaller in diameter, the flow speed is high, and the heat exchange coefficient is high. The whole device can be designed into a high power density configuration in a limited volume. Saving space and energy consumption.

The infusion tube 1 can be made of a tube with high internal smoothness, and is particularly suitable for occasions with smoothness and cleanliness requirements on media.

The fluid electric heater has raised heat exchange efficiency, reduced volume and low power consumption, and has volume 1/3-1/2 that of traditional electric heater.

The technical principle of the present utility model is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the utility model and should not be taken in any way as limiting the scope of the utility model. Other embodiments of the utility model will occur to those skilled in the art from consideration of the specification and practice of the utility model without the need for inventive faculty, and are within the scope of the claims.

Claims

1. A fluid electric heater, comprising:

the infusion tube (1) is arranged in an annular array;

the infusion tube comprises an inlet flange (2), wherein a plurality of inlet holes (21) are formed in the inlet flange (2), and one end of the infusion tube (1) is fixed in the inlet holes (21) and corresponds to the inlet holes (21) one by one;

the infusion tube comprises an outlet flange (3), wherein a plurality of outlet holes (31) are formed in the outlet flange (3), and the other end of the infusion tube (1) is fixed in the outlet holes (31) and corresponds to the outlet holes (31) one by one;

the heating pipe (4) is fixed on the infusion tube (1) in a shrinkage pipe mode;

the wiring boards (7) are arranged, the wiring boards (7) are provided with a plurality of wiring boards, and the wiring boards (7) are arranged at the end parts of the heating pipes (4);

the connecting plate (8), connecting plate (8) are equipped with a plurality of, the both ends of connecting plate (8) are installed two adjacent heating pipe (4) are last, and are located the tip of heating pipe (4), wiring board (7) with connecting plate (8) make a plurality of heating pipe (4) form the series connection.

2. A fluid electric heater as claimed in claim 1, wherein,

the infusion tube is characterized by further comprising a housing, wherein two ends of the housing are connected with the inlet flange (2) and the outlet flange (3), and the infusion tube (1) is positioned in the housing.

3. A fluid electric heater as claimed in claim 1, wherein,

the infusion tube further comprises an insulating layer (6), the insulating layer (6) is wrapped on the outer circular surface of the infusion tube (1), and the heating tube (4) is arranged on the insulating layer (6).

4. A fluid electric heater as claimed in claim 3, wherein,

the insulating layer (6) comprises ceramic and/or magnesia powder.

5. A fluid electric heater as claimed in any of claims 1 to 4, wherein,

the infusion tube also comprises a temperature sensor, and the temperature sensor is arranged on the infusion tube (1).

6. A fluid electric heater as claimed in any of claims 1 to 4, wherein,

and a free bending section (11) is arranged between the infusion tube (1) and the inlet flange (2) and between the infusion tube and the outlet flange (3).