CN210154077U

CN210154077U - PTC air heater

Info

Publication number: CN210154077U
Application number: CN201920911535.2U
Authority: CN
Inventors: 聂健; 郭贞军; 阳红卫; 李建阳
Original assignee: Nanjing Xiezhong Automobile Air Conditioner Group Co Ltd
Current assignee: Nanjing Xiezhong Automobile Air Conditioner Group Co Ltd
Priority date: 2019-06-18
Filing date: 2019-06-18
Publication date: 2020-03-17
Anticipated expiration: 2029-06-18

Abstract

The utility model discloses a PTC air heater, which comprises a controller shell, wherein a PTC circuit board is arranged in the inner cavity of the controller shell, one side of the controller shell is connected with a PTC frame, the PTC frame fixes a heating core flat tube, a ceramic plate is arranged in the heating core flat tube, and one end of the ceramic plate is provided with a power pin; the PTC frame comprises a U-shaped frame plate, the open end of the U-shaped frame plate is fixed with the controller shell through a frame plate fixing bolt, a plurality of heating core flat tubes are arranged between two side plates of the U-shaped frame plate at intervals, one end of each heating core flat tube is tightly pressed on the controller shell through an elastic plug, a power supply pin penetrates through the elastic plug and stretches into the inner cavity of the controller shell to be connected with the PTC circuit board, and the other end of each heating core flat tube is tightly pressed on the bottom plate of the U-shaped frame plate through an elastic plug. The utility model provides a current PTC air heater's the unstable problem of the flat tub of tip sealing performance of core that generates heat.

Description

PTC air heater

Technical Field

The utility model relates to an automobile air conditioning system, especially a PTC air heater.

Background

The PTC air heater for the automobile air conditioner generally comprises a controller shell, a PTC circuit board, a PTC frame, a heating core flat tube and a ceramic chip, wherein the controller shell is assembled with the PTC frame, the PTC circuit board is installed in the controller shell, the heating core flat tube is fixed on the PTC frame, the ceramic chip is installed in the heating core flat tube, one end of the ceramic chip is provided with a power supply pin, and the power supply pin extends into the controller shell and is connected with the PTC circuit board.

When the PTC air heater works, high voltage electricity is led to the ceramic wafer through the PTC circuit board and the power supply pin to enable the ceramic wafer to generate heat, air flow to be heated flows through the surface of the flat tube of the heating core body through the air conditioner fan, and heat of the flat tube of the heating core body is transferred to the air to be heated.

The waterproof of the flat tube end of the heating core body is the key point of the PTC air heater, the existing products generally meet the waterproof requirement by gluing, but the glue is difficult to keep stable for a long time along with the change of time and environment.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model provides a PTC air heater to solve the unstable problem of the flat tub of tip sealing performance of the core that generates heat.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a PTC air heater comprises a controller shell, wherein a PTC circuit board is arranged in an inner cavity of the controller shell, one side of the controller shell is connected with a PTC frame, the PTC frame fixes a heating core flat tube, a ceramic plate is arranged in the heating core flat tube, and one end of the ceramic plate is provided with a power pin;

the PTC frame includes U type deckle board, the open end of U type deckle board passes through deckle board fixing bolt and is fixed with the controller casing, the interval sets up the flat pipe of the core that generates heat of a plurality of between the both sides board of U type deckle board, the flat pipe one end of the core that generates heat extends to the open end of U type deckle board, and compress tightly the controller casing through an elasticity end cap, power pin passes elasticity end cap and stretches into controller casing inner chamber in the lump and links to each other with the PTC circuit board, the flat pipe other end of the core that generates heat extends to the bottom plate of U type deckle board, and compress tightly the bottom plate of U type deckle board through elasticity end cap two.

Further, the PTC frame still includes the grid board, and the grid board is arranged in the both sides of the flat pipe of the core that generates heat, and the grid board passes through grid board fixing bolt and is fixed with the controller casing.

Furthermore, the grid plate and the U-shaped frame plate are integrally formed.

Furthermore, the flat tube of the heating core body is a straight tube.

Furthermore, heating core fins are arranged between the heating core flat tubes and two side plates of the U-shaped frame plate.

Furthermore, the heating core body fins are fixed with two side plates of the U-shaped frame plate through fin fixing bolts.

Has the advantages that: the flat tube of the core that generates heat is fixed through U type frame plate, and the flat tube of the core one end that generates heat extends to the open end of U type frame plate to compress tightly the controller casing through elasticity end cap one, the flat tube of the core other end that generates heat extends to the bottom plate of U type frame plate, and compresses tightly the bottom plate of U type frame plate through elasticity end cap two, seals the flat tube of the core both ends that generate heat through elasticity end cap, and sealed effect is better, and sealing performance is more stable.

Drawings

FIG. 1 is an exploded view of the structure of the present invention;

in the figure: 1-a controller housing; 2-power supply pin; 3-heating core fins; 4-heating core flat tubes; 5-ceramic plate; 6-fixing bolts for the frame plates; 7-fin fixing bolts; 8-U-shaped frame plates; 9-a grid plate; 10-grid plate fixing bolts; 11-elastic plug II; 12-elastic plug one.

The specific implementation mode is as follows:

the present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1, the utility model discloses a PTC air heater, including

controller casing

1, 1 inner chamber of controller casing is equipped with the PTC circuit board, and 1 one side of controller casing links to each other with the PTC frame, and the fixed flat pipe 4 of the core that generates heat of PTC frame, the flat inside potsherd 5 that is equipped with of the flat pipe 4 of the core that generates heat, potsherd 5 one end are equipped with power pin 2.

The PTC frame includes U type deckle board 8, the open end of U type deckle board 8 passes through deckle board fixing bolt 6 and controller casing 1 is fixed, the interval sets up the flat pipe 4 of the core that generates heat of a plurality of between the both sides board of U type deckle board 8, the flat pipe 4 one end of the core that generates heat extends to the open end of U type deckle board 8, and compress tightly controller casing 1 through elasticity end plug one 12, power pin 2 passes elasticity end plug one 12 and stretches into 1 inner chamber of controller casing and links to each other with the PTC circuit board, the flat pipe 4 other end of the core that generates heat extends to the bottom plate of U type deckle board 8, and compress tightly the bottom plate of U type deckle board 8 through two 11 elasticity end plugs. The first elastic plug 12 and the second elastic plug 11 can be made of silica gel.

Adopt foretell PTC air heater structure, the flat pipe of the core that generates heat is fixed through U type curb plate, and the flat pipe one end of the core that generates heat extends to the open end of U type curb plate to compress tightly the controller casing through elasticity end cap one, the flat pipe other end of the core that generates heat extends to the bottom plate of U type curb plate, and compress tightly the bottom plate of U type curb plate through elasticity end cap two, seal the flat pipe both ends of the core that generate heat through elasticity end cap, sealed effect is better, and sealing performance is more stable.

In this embodiment, the PTC frame further includes a grid plate 9, the grid plate 9 is disposed on both sides of the flat tube 4 of the heating core, and the grid plate 9 is fixed to the controller housing 1 by a grid plate fixing bolt 10. The grid plate 9 plays a role in protecting the flat tube 4 of the heating core body. The grid plate 9 and the U-shaped frame plate 8 are integrally formed, so that the production and installation of the PTC frame are facilitated.

Preferably, the flat tube of the heating core body is a straight tube. In order to improve the heat conduction efficiency between the flat heating core tubes 4 and the air flow, the heating core fins 3 are arranged between the flat heating core tubes 4 and the two side plates of the U-shaped frame plate 8. The heating core fins 3 are fixed with two side plates of a U-shaped frame plate 8 through fin fixing bolts 7.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A PTC air heater comprises a controller shell (1), wherein a PTC circuit board is arranged in an inner cavity of the controller shell (1), one side of the controller shell (1) is connected with a PTC frame, the PTC frame fixes a heating core flat tube (4), a ceramic plate (5) is arranged inside the heating core flat tube (4), and one end of the ceramic plate (5) is provided with a power supply pin (2); the method is characterized in that:

the PTC frame includes U type frame board (8), the open end of U type frame board (8) is fixed with controller casing (1) through frame board fixing bolt (6), the interval sets up the flat pipe of the core (4) that generate heat of a plurality of between the both sides board of U type frame board (8), the flat pipe of the core (4) one end that generates heat extends to the open end of U type frame board (8), and compress tightly controller casing (1) through elasticity end cap one (12), power pin (2) pass elasticity end cap one (12) and stretch into controller casing (1) inner chamber and link to each other with the PTC circuit board, the flat pipe of the core (4) other end that generates heat extends to the bottom plate of U type frame board (8), and compress tightly the bottom plate of U type frame board (8) through elasticity end cap two (11).

2. A PTC air heater according to claim 1, wherein: the PTC frame further comprises grid plates (9), the grid plates (9) are arranged on two sides of the heating core flat tubes (4), and the grid plates (9) are fixed with the controller shell (1) through grid plate fixing bolts (10).

3. A PTC air heater according to claim 2, wherein: the grating plate (9) and the U-shaped frame plate (8) are integrally formed.

4. A PTC air heater according to claim 1, wherein: the flat tube (4) of the heating core body is a straight-through tube.

5. A PTC air heater according to claim 4, wherein: heating core fins (3) are arranged between the heating core flat tubes (4) and the two side plates of the U-shaped frame plate (8).

6. A PTC air heater according to claim 5, wherein: the heating core body fins (3) are fixed with two side plates of the U-shaped frame plate (8) through fin fixing bolts (7).