CN211203060U

CN211203060U - Carbon tank solenoid valve

Info

Publication number: CN211203060U
Application number: CN201921633637.9U
Authority: CN
Inventors: 潘玉丽; 刘宇; 王运鑫; 高飞; 袁国文
Original assignee: Vitesco Automotive Changchun Co Ltd
Current assignee: Vitesco Automotive Changchun Co Ltd
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2020-08-07
Anticipated expiration: 2029-09-27

Abstract

The utility model provides a carbon tank solenoid valve, it includes inlet end, exhaust end and the main part that couples together inlet end and exhaust end. The air inlet end comprises an air inlet hole, the air outlet end comprises an air outlet hole, and the main body part is provided with a containing space for connecting the air inlet hole and the air outlet hole. The carbon tank electromagnetic valve further comprises a control valve for opening and closing the air inlet hole, and the carbon tank electromagnetic valve further comprises a noise reduction pipe, wherein the noise reduction pipe is fixed in the air outlet hole, and one end of the noise reduction pipe extends into the accommodating space. The utility model provides a carbon tank solenoid valve is through setting up the noise reduction pipe at the exhaust end to this reduces the noise that its during operation produced.

Description

Carbon tank solenoid valve

Technical Field

The utility model relates to a carbon tank solenoid valve, especially a carbon tank solenoid valve with device of making an uproar falls.

Background

The canister solenoid valve is a device installed in a vehicle for reducing air pollution due to evaporative emissions of fuel while increasing fuel efficiency. When the engine is shut down, the activated carbon canister for the vehicle starts to absorb oil vapor volatilized from the oil tank and is firmly locked in the activated carbon micropores in the carbon canister to prevent the oil vapor from being emitted to the atmosphere. When the automobile is started, the carbon tank electromagnetic valve is opened timely, and absorbed fuel steam is put into the air inlet manifold, so that the aims of saving fuel and protecting the environment are fulfilled.

The canister solenoid valve generally includes an intake end, an exhaust end, and a main body portion connecting the intake end and the exhaust end. When the carbon tank electromagnetic valve works, sound waves generate disturbance and circulation in air flow, and self-excitation is formed, so that noise is generated.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can noise reduction's carbon tank solenoid valve.

According to an aspect of the utility model, a carbon canister solenoid valve is provided, it includes inlet end, exhaust end and the main part that couples together inlet end and exhaust end. The air inlet end comprises an air inlet hole, the air outlet end comprises an air outlet hole, and the main body part is provided with a containing space for connecting the air inlet hole and the air outlet hole. The carbon tank electromagnetic valve further comprises a control valve for opening and closing the air inlet hole, and the carbon tank electromagnetic valve further comprises a noise reduction pipe, wherein the noise reduction pipe is fixed in the air outlet hole, and one end of the noise reduction pipe extends into the accommodating space.

Preferably, the noise reduction tube includes an inner tube, an outer tube, and a connecting portion that fixes the outer tube and the inner tube together. A gap is arranged between the inner tube and the outer tube, the accommodating space is connected with the outside through the gap, the inner tube is provided with an inner hole, the outer tube is fixed in the air outlet hole, the gap forms a first air outlet channel, and the inner hole forms a second air outlet channel.

Preferably, the connecting portion is a plurality of connecting portions, and a through hole is formed between any two connecting portions.

Preferably, the inner pipe and the outer pipe are both cylindrical and are coaxially arranged.

Preferably, the outer tube is pressed into the air outlet hole in a pressing mode, and an inclined surface is arranged on the end surface of the outer tube close to the accommodating space.

Preferably, the carbon tank solenoid valve is provided with a step surface, and the end of the outer pipe abuts against the step surface.

Preferably, the outer surface of the outer tube is at least partially attached to the inner surface of the air outlet hole.

Preferably, the control valve is a solenoid valve.

The utility model provides a carbon tank solenoid valve is through setting up the noise reduction pipe at the exhaust end to this reduces the noise that its during operation produced.

Drawings

Fig. 1 is a perspective view of the canister solenoid valve of the present invention.

Fig. 2 is a cross-sectional view of the canister solenoid valve of the present invention.

Fig. 3 is a perspective view of the cannula.

Detailed Description

Referring to fig. 1 to 2, the present invention discloses a canister solenoid valve 100, which includes an air inlet 12, an air outlet 11, and a main body 13 connecting the air inlet 12 and the air outlet 11. The canister solenoid valve 100 is also provided with a control valve 4 for opening and closing the intake end.

The inlet end 12 includes an inlet hole 121, the outlet end 11 includes an outlet hole 111, and the main body 13 is provided with a receiving space 131 connecting the inlet hole 121 and the outlet hole 111. The control valve 4 is a solenoid valve. When it is necessary to open the intake holes 121, the electromagnetic valve is energized to generate electromagnetic force, and the valve 41 moves toward the coil (not shown) to open the intake holes 121. At this time, the spring 42 is compressed. When the air inlet hole 121 needs to be closed, the electromagnetic valve is powered off, and the electromagnetic force disappears. Under the elastic force of the spring 42, the valve 41 is pressed against the intake hole 121, thereby closing the intake hole 121.

As further shown in fig. 3, the canister solenoid valve 100 further includes a noise reduction pipe 3, and the noise reduction pipe 3 is fixed in the air outlet hole 111 and has one end extending into the receiving space 131. The noise reduction tube 3 includes an inner tube 33, an outer tube 31, and a connecting portion 32 that fixes the outer tube 31 and the inner tube 33 together. A gap 311 is provided between the inner tube 33 and the outer tube 31. The gap 311 connects the receiving space 131 with the outside, the inner tube 33 is provided with an inner hole 331, and the outer tube 31 is fixed into the air outlet hole 111. Gap 311 forms a first outlet channel and bore 331 forms a second outlet channel. The self-excitation of the external sound wave impact wave surface can be broken through the arrangement, so that the noise is reduced. In order to make the inner hole 331 form an air outlet channel, the end surface of the inner hole 311 located in the receiving space 131 preferably does not abut against the inner wall of the receiving space 131.

In order to increase the air flow rate of the second air outlet channel, a plurality of communication holes (not shown) for communicating the accommodating space 131 with the inner hole 331 may be provided on the sidewall of the inner tube 31 located in the accommodating space 131.

The connecting portion 32 is plural, and a through hole is formed between any two connecting portions 32. The through hole communicates the gap 311 with the receiving space 131. In the present embodiment, the number of the connection portions 32 is four. Other numbers of connections 32 are possible. In the present embodiment, the plurality of connecting portions 32 are disposed on the same plane, and in order to increase the fixing effect between the inner tube 33 and the outer tube 31, the connecting portions 32 may be disposed on different planes, so that the fixing between the inner tube 33 and the outer tube 31 is stable. The noise reduction tube 3 may be made of plastic material, which may be formed by a mold. If the noise reduction pipe 3 is made of a metal material, it can be manufactured by machining.

The inner tube 33 and the outer tube 31 are both cylindrical and are coaxially disposed. The outer tube 31 is press-fitted into the air outlet hole 111, and an end surface of the outer tube 31 near the housing space 131 is provided with an inclined surface 312. The inclined surface 312 allows the outer tube 31 to be easily pressed into the air outlet hole 111.

To provide a location for the canister solenoid valve 100 during press fitting, a stepped surface 112 is provided. The end of the outer tube 31 abuts against the step surface 112.

When the noise reduction pipe 3 is assembled, the end portion with the inclined surface 312 faces the air outlet hole 111, and a tool is used to apply a force to the noise reduction pipe 3 in the axial direction thereof, so that the noise reduction pipe 3 enters the air outlet hole 111. When the end of the outer tube 31 abuts against the step surface 112, the tool is taken out. At this time, the noise reduction pipe 3 is located at a position where it needs to be installed. The noise reduction pipe 3 is fixed in the mounting hole in an interference fit manner. In order to achieve the fixing effect, a certain amount of fixing glue may be applied to the outer surface of the outer tube 31.

It will be apparent to those skilled in the art that various modifications and variations can be made to the above-described exemplary embodiments of the present invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

Claims

1. The utility model provides a carbon tank solenoid valve, its includes inlet end (12), exhaust end (11) and main part (13) that couples together inlet end (12) and exhaust end (11), inlet end (12) include inlet port (121), exhaust end (11) include venthole (111), main part (13) are equipped with accommodating space (131) of coupling together inlet port (121) and venthole (111), carbon tank solenoid valve is still including control valve (4) that are used for opening and close inlet port (121), its characterized in that, carbon tank solenoid valve still includes noise reduction pipe (3), noise reduction pipe (3) are fixed to in venthole (111) and one end stretches into accommodating space (131).

2. The canister solenoid valve according to claim 1, wherein the noise reduction tube comprises an inner tube (33), an outer tube (31), and a connecting portion (32) for fixing the outer tube (31) and the inner tube (33) together, a gap (311) is provided between the inner tube (33) and the outer tube (31), the gap (311) connects the housing space (131) and the outside together, the inner tube (33) is provided with an inner hole (331), the outer tube (31) is fixed in the air outlet hole (111), the gap (311) forms a first air outlet channel, and the inner hole (331) forms a second air outlet channel.

3. The canister solenoid valve according to claim 2, wherein the connecting portion (32) is plural, and a through hole is formed between any two connecting portions (32).

4. A canister solenoid valve according to claim 2, characterised in that said inner (33) and outer (31) tubes are cylindrical and are arranged coaxially.

5. The canister solenoid valve according to claim 2, wherein the outer tube (31) is press-fitted into the air outlet hole (111), and an end surface of the outer tube (31) adjacent to the receiving space (131) is provided with an inclined surface (312).

6. The canister solenoid valve according to claim 5, characterized in that it is provided with a step surface (112), the end of the outer tube (31) being abutted to the step surface (112).

7. The canister solenoid valve according to claim 5, characterized in that the outer surface of the outer tube (31) is at least partially conformed to the inner surface of the air outlet hole (111).

8. A canister solenoid valve according to claim 1, characterised in that said control valve (4) is a solenoid valve.