CN214949807U

CN214949807U - Air heating device

Info

Publication number: CN214949807U
Application number: CN202121420359.6U
Authority: CN
Inventors: 杨文雄; 刘泽鸿; 刘映德; 马学成
Original assignee: Lijiang Yinghua Biological Pharmaceutical Co ltd
Current assignee: Lijiang Yinghua Biological Pharmaceutical Co ltd
Priority date: 2021-06-24
Filing date: 2021-06-24
Publication date: 2021-11-30
Anticipated expiration: 2031-06-24

Abstract

The utility model discloses an air heating device, the power distribution box comprises a cavity body, the cavity is hollow structure, one side of cavity is equipped with the air inlet, and the opposite side of cavity is equipped with the controller, just be equipped with air flow control valve on the air inlet, be equipped with the electrothermal tube in the cavity, and the rotation of cavity inner wall is connected with the guide plate, cavity upper portion is equipped with the gas outlet, be equipped with temperature monitor on the gas outlet, the controller lower part is equipped with the electricity-receiving mouth, and the inside inner chamber temperature monitor that is equipped with of controller. The utility model discloses an air inlet is equipped with intelligent air flow control valve, has avoided air flow velocity too big for loss of pressure sharply increases, reduces the condition of heating efficiency. The utility model discloses a guide plate can pack up or fall according to the temperature adjustment demand, reaches rapid heating up and rapid cooling's effect. The utility model discloses a fill boron nitride in the electric heating element, heat resistance, heat conductivility and stability are all better than prior art.

Description

Air heating device

Technical Field

The utility model belongs to the technical field of the air heating, concretely relates to air heating device.

Background

The air heater is a widely used heater, and can be divided into various types according to different heating gases, and a nitrogen heater and a hydrogen heater are common. These may also be referred to as duct gas heaters. The device is widely applied to many scientific research and production laboratories such as aerospace, weapon industry, chemical industry, colleges and universities, and is particularly suitable for automatic temperature control and large-flow high-temperature combined system and accessory tests.

However, in the prior art, if the intake air flow rate is too large, the pressure loss increases abruptly, which is not favorable for the improvement of the heating efficiency. When the temperature of the air outlet is too high, the temperature of the surface of the electric heating element is also greatly increased, so that the electric heating element cannot bear the temperature, and the increase of the air outlet is generally limited by the heat resistance of the electric heating element material in the air heater.

Therefore, it is very critical to develop an air heating apparatus capable of solving the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an air heating device.

The utility model aims at realizing like this, which comprises a cavity body, the cavity is hollow structure, one side of cavity is equipped with the air inlet, and the opposite side of cavity is equipped with the controller, just be equipped with air flow control valve on the air inlet, be equipped with the electrothermal tube in the cavity, and the cavity inner wall rotates and is connected with the guide plate, cavity upper portion is equipped with the gas outlet, be equipped with temperature monitor on the gas outlet, the controller lower part is equipped with connects the electric mouth, and the inside inner chamber temperature monitor that is equipped with of controller, inner chamber temperature monitor cooperatees with the electrothermal tube, the controller is connected in inner chamber temperature monitor and guide plate electricity respectively, connect the electric mouth respectively with controller, inner chamber temperature monitor, guide plate and electrothermal tube electricity and be connected.

Compared with the prior art, the utility model discloses following technological effect has:

1. the utility model discloses an air inlet is equipped with intelligent air flow control valve, has avoided air flow velocity too big for loss of pressure sharply increases, reduces the condition of heating efficiency.

2. The utility model discloses a guide plate can pack up or fall according to the temperature adjustment demand, reaches rapid heating up and rapid cooling's effect.

3. The utility model discloses a fill boron nitride in the electric heating element, heat resistance, heat conductivility and stability are all better than prior art.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the present invention with the deflector retracted;

FIG. 3 is a schematic structural view of the cross section of the electric heating tube of the present invention;

in the figure: 1-air inlet pipe, 2-cavity, 3-electric heating pipe, 31 electric heating wire, 32-steel pipe, 33-boron nitride, 4-guide plate, 5-temperature monitor, 6-air outlet, 7-support leg, 8-inner cavity temperature monitor, 9-controller, 10-electric connection port and 11-air flow control valve.

Detailed Description

The following description of the present invention is provided with reference to the accompanying drawings, which are not intended to limit the present invention in any way, and any alterations or replacements made based on the teachings of the present invention are all within the protection scope of the present invention.

As shown in the attached figures 1-3, the utility model comprises a cavity 2, wherein the cavity 2 is a hollow structure, one side of the cavity 2 is provided with an air inlet 1, the other side of the cavity 2 is provided with a controller 9, an air flow control valve 11 is arranged on the air inlet 1, an electric heating tube 3 is arranged in the cavity 2, a guide plate 4 is rotatably connected on the inner wall of the cavity 2, an air outlet 6 is arranged at the upper part of the cavity 2, a temperature monitor 5 is arranged on the air outlet 6, an electric interface 10 is arranged at the lower part of the controller 9, and an inner cavity temperature monitor 8 is arranged in the controller 9, the inner cavity temperature monitor 8 is matched with the electric heating tube 3, the controller 9 is respectively electrically connected with the inner cavity temperature monitor 8 and the guide plate 4, and the electric connection port 10 is respectively electrically connected with the controller 9, the inner cavity temperature monitor 8, the temperature monitor 5, the guide plate 4 and the electric heating tube 3.

The lower part of the cavity 2 is provided with a support leg 7.

The air flow control valve 11 is an intelligent air flow control valve.

The chamber 2 is made of a heat insulating material.

The electric heating tube 3 is divided into an inner layer and an outer layer, the inner layer is an electric heating wire 31, the outer layer is a seamless steel tube 32, and a gap between the inner layer and the outer layer is filled with boron nitride.

The utility model discloses theory of operation and working process:

when air gets into air inlet 1, earlier by intelligent air flow control valve 11, adjust air flow rate to the best numerical value of predetermined heating efficiency, later controller 9 signals of telecommunication, electrothermal tube 3 begins the heated air, guide plate 4 descends, increase the residence time of air in cavity 2 in order to improve heat exchange efficiency, when needing to reduce 6 temperatures in the gas outlet, controller 9 signals of telecommunication again, electrothermal tube 3 temperature descends, guide plate 4 packs up, reduce the residence time of air in cavity 3, make 6 temperatures in the gas outlet reduce rapidly.

Claims

1. An air heating device comprises a cavity (2) and is characterized in that the cavity (2) is of a hollow structure, an air inlet (1) is arranged on one side of the cavity (2), a controller (9) is arranged on the other side of the cavity (2), an air flow control valve (11) is arranged on the air inlet (1), an electric heating pipe (3) is arranged in the cavity (2), a guide plate (4) is connected to the inner wall of the cavity (2) in a rotating mode, an air outlet (6) is arranged on the upper portion of the cavity (2), a temperature monitor (5) is arranged on the air outlet (6), an electricity receiving port (10) is arranged on the lower portion of the controller (9), an inner cavity temperature monitor (8) is arranged inside the controller (9), the inner cavity temperature monitor (8) is matched with the electric heating pipe (3), and the controller (9) is electrically connected with a rotating mechanism of the inner cavity temperature monitor (8) and the guide plate (4) respectively, the electric connection port (10) is respectively and electrically connected with the controller (9), the inner cavity temperature monitor (8), the temperature monitor (5), the rotating mechanism of the guide plate (4) and the electric heating tube (3).

2. Air heating device according to claim 1, characterized in that the cavity (2) is provided with feet (7) at the lower part.

3. Air heating device according to claim 1, characterized in that the air flow control valve (11) is a smart air flow control valve.

4. Air heating device according to claim 1, characterized in that the cavity (2) is made of a heat insulating material.

5. The air heating device according to claim 1, wherein the electric heating tube (3) is divided into an inner layer and an outer layer, the inner layer is the electric heating wire (31), the outer layer is the seamless steel tube (32), and a gap between the inner layer and the outer layer is filled with boron nitride.