CN212429009U

CN212429009U - Compressed gas bypass valve

Info

Publication number: CN212429009U
Application number: CN202020701543.7U
Authority: CN
Inventors: 唐润秋; 张双利
Original assignee: Vitesco Automotive Wuhu Co Ltd
Current assignee: Vitesco Automotive Wuhu Co Ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2021-01-29
Anticipated expiration: 2030-04-30

Abstract

The utility model relates to a compressed gas bypass valve, which comprises a valve body, a valve head and an armature component, wherein the armature component comprises an armature, a guide rod fixedly connected with the armature, a sleeve sleeved on the periphery of the armature and a first bearing press-fitted in the sleeve; the valve body is internally integrated with a first stator, a second bearing which is in press fit in a guide groove of the first stator, a bobbin and a coil which is wound on the bobbin; the guide rod axially passes through the first bearing and the second bearing and can freely move in the first bearing and the second bearing, wherein the compressed gas bypass valve further comprises a damping device for stroke stop when the valve head is opened. According to the utility model discloses compressed gas bypass valve is used for machinery to end the damping device of position and control the stroke of valve body and the operation displacement of guide bar through the setting, has reduced the sound that produces when opening effectively.

Description

Compressed gas bypass valve

Technical Field

The utility model relates to an automobile parts technical field, specifically speaking relates to a compressed gas bypass valve for turbocharged engine.

Background

In modern automobiles, turbocharging technology is increasingly used in power assemblies to improve energy efficiency. In a turbocharged engine, exhaust gas pushes a turbine in the turbocharger, which drives an air compressor connected to the turbine to compress intake air, and the compressed air passes through an intercooler to a throttle valve, and then enters the engine cylinders for combustion. In practical application, a compressed gas return line connected with the air compressor in parallel is arranged at the upstream of the compressed air intercooler, a compressed gas bypass valve is arranged in the compressed gas return line, when the compressed gas bypass valve is not electrified, the compressed gas return line is in a closed state, when the compressed gas bypass valve is electrified, the compressed gas bypass valve is opened, compressed air can flow back to the air inlet end of the air compressor through the compressed gas bypass valve, and therefore damage to turbine blades caused by surge is prevented, meanwhile, the backflow of the compressed gas can allow the turbine to continue rotating to reduce lag of the turbine during acceleration and protect a throttle valve.

In general, a compressed gas bypass valve includes a valve body, a valve head, and an armature assembly coupled to the valve head, the armature assembly including an armature and a guide rod fixedly coupled thereto. However, in the conventional compressed gas bypass valve, when the compressed gas bypass valve is opened, a stroke stop is generally achieved by a direct mechanical impact between the armature and the upper stator located above the armature, and thus, a large noise may be present during the opening of the valve head.

SUMMERY OF THE UTILITY MODEL

It is therefore an object of the present invention to provide a compressed gas bypass valve which overcomes the above and other disadvantages of the prior art.

The utility model provides a compressed gas bypass valve, which comprises a valve body, a valve head and an armature component, wherein the armature component comprises an armature, a guide rod fixedly connected with the armature, a sleeve sleeved on the periphery of the armature and a first bearing press-fitted in the sleeve; the valve body is internally integrated with a first stator, a second bearing which is in press fit in a guide groove of the first stator, a bobbin and a coil which is wound on the bobbin; the guide rod axially passes through the first bearing and the second bearing and can freely move in the first bearing and the second bearing, wherein the compressed gas bypass valve further comprises a damping device for stroke stop when the valve head is opened.

Advantageously, the damping means comprises a rubber layer vulcanised at the end of the guide bar adjacent to the first stator.

Advantageously, in the fully closed state of the compressed gas bypass valve, a distance between the end of the vulcanized rubber layer of the guide rod and the bottom of the guide groove of the first stator is smaller than a distance between an end face of the armature facing the first stator and an end face of the first stator facing the armature.

Advantageously, said damping means comprise a rubber layer vulcanized on the bottom of the guide grooves of said first stator.

Advantageously, in the fully closed state of the compressed gas bypass valve, the distance between the end of the guide rod adjacent to the first stator and the rubber layer on the bottom of the guide groove of the first stator is smaller than the distance between the end face of the armature facing the first stator and the end face of the first stator facing the armature.

Advantageously, the end of the guide rod adjacent the first stator has a reduced diameter such that the outer peripheral surface of the rubber layer vulcanized on said end follows the main body portion of the guide rod.

Advantageously, a portion of the length of the guide rod is provided with a toothed formation which frictionally engages the central bore of the armature.

According to the utility model discloses a compressed gas bypass valve through the damping characteristic of utilizing the rubber of vulcanizing to the guide bar tip, guarantees to reduce the noise effectively when the valve head is opened, and the manufacturing cost who relates is lower.

Drawings

The above and other features and advantages of the present invention will become more readily understood from the following description with reference to the accompanying drawings, in which:

FIG. 1 illustrates a cross-sectional view of a compressed gas bypass valve according to an embodiment of the present invention in a closed state;

FIG. 2 illustrates a perspective view of a guide rod included in a compressed gas bypass valve according to an embodiment of the present invention, wherein an end portion of the guide rod is vulcanized with a rubber layer; and

fig. 3 shows an enlarged cross-sectional view of the end of the guide rod having the rubber layer vulcanized thereon.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The following description of the present invention may be used in conjunction with any orientation, such as "upper," "lower," "inner," "outer," "radial," "axial," and the like, unless otherwise specified, and is presented for convenience of description only and without intending to limit the invention in any way. Furthermore, terms such as "first," "second," and the like, are used hereinafter to describe elements of the present application and are used only to distinguish one element from another without limiting the nature, sequence, order, or number of such elements. In addition, it is to be noted that in the present specification, the same or similar reference numerals are used for the same technical features.

Fig. 1 shows a sectional view of a compressed gas bypass valve according to an embodiment of the invention in a closed state, the compressed gas bypass valve 1 comprising a valve body 2; a valve head 3; an armature 4; a guide rod 5; a bobbin 6; a coil 7; a first stator 8; a second stator 9; an elastic member (e.g., spring) 10; a first bearing 11 and a second bearing 12. The basic working principle of the compressed gas bypass valve is as follows: when the compressed gas bypass valve 1 is electrified, the armature iron 4 generates linear movement in a certain direction under the action of electromagnetic force, so that the guide rod 5 and the valve head 3 are driven to move together in the same direction, and the valve is in an open state; when the compressed gas bypass valve 1 is de-energized, the valve head 3 moves in the opposite direction and presses against a valve seat (not shown) under the action of the gravity of the valve head 3 and the elastic force of the elastic member 10, so that the gas passage is closed, and the valve is in a closed state (shown in fig. 1).

It will be appreciated that in order that the valve head 3 may move with the armature 4 as the compressed gas bypass valve opens and closes, the guide rod 5 is fixedly connected to the armature 4, for example by interference fit, for example, as shown in figure 2, the guide rod 5 is provided over a portion of its length with a toothed formation 13, the toothed formation 13 frictionally engaging the central bore of the armature 4; and a first end of the guide rod 5 remote from the first stator is fixedly connected to the holding sleeve 15, for example by means of laser welding. The valve head 3 is constrained between a stop flange 16 of the retaining sleeve 15 and a stop shoulder 17 at the first end of the guide rod, so as to be able to move synchronously with the armature 4.

In the compressed gas bypass valve of the prior art, the coil 7 is energized, and the armature 4 moves the valve head 3 away from the valve seat (upward in fig. 1) until a maximum stroke of opening of the valve body is reached, which stroke stop occurs at a dimension a (see fig. 1), i.e., a mechanical stroke stop occurs between the armature 4 and a lower end surface of the first stator 8 located above the armature, by mechanical impact. This way of stopping the position can cause severe noise.

However, according to the present invention, an important difference of the compressed gas bypass valve compared to the compressed gas bypass valve in the prior art is that the compressed gas bypass valve of the present invention is additionally provided with a damping means for stroke end when the valve head is opened. The damping means comprises a layer of vulcanised rubber 18 arranged at the second end of the guide rod adjacent said first stator. When the compressed gas bypass valve is in the fully closed state as shown in fig. 1, a distance a1 between the second end of the guide rod, at which the vulcanized rubber layer 18 is provided, and the bottom of the guide groove 14 of the first stator is smaller than a distance a between an end face of the armature facing the first stator and an end face of the first stator facing the armature. As such, when the compressed gas bypass valve is opened, the stroke stop is achieved by the collision between the second end of the guide rod having the vulcanized rubber layer and the bottom of the guide groove of the first stator, i.e., the stroke stop occurs at dimension a 1. Due to the vulcanized rubber layer at the end part of the guide rod, the noise generated during the collision is greatly reduced.

As shown in fig. 3, the second end portion of the guide bar adjacent to the first stator has a reduced diameter so that the outer peripheral surface of the rubber layer vulcanized on the second end portion follows the main body portion of the guide bar. It should be understood that other configurations of the guide rod end portion vulcanized with a rubber layer are possible, as long as the function as described herein is achieved.

Of course, alternatively, the damping means may comprise a rubber layer vulcanized on the bottom of the guide grooves 14 of said first stator. When the compressed gas bypass valve is in the fully closed state, a distance between a second end portion of the guide rod adjacent to the first stator and the vulcanized rubber layer on the bottom of the guide groove of the first stator is smaller than a distance between an end face of the armature facing the first stator and an end face of the first stator facing the armature. As such, when the compressed gas bypass valve is opened, the stroke stop is achieved by the collision between the second end of the guide rod adjacent to the first stator and the bottom of the guide groove of the first stator having the vulcanized rubber layer. Also, due to the presence of the vulcanized rubber layer in the guide groove of the first stator, noise generated upon impact is greatly reduced.

According to the utility model discloses compressed gas bypass valve is used for machinery to end the damping device of position and control through the operation displacement to the stroke of valve body and guide bar through the setting, has reduced the sound that produces when opening effectively.

It should be noted that the above-described embodiments should be regarded as merely exemplary, and the present invention is not limited to these embodiments. Upon consideration of the present specification, those skilled in the art can make various changes and modifications without departing from the scope or spirit of the present invention. The true scope of the invention is defined by the following claims and their equivalents.

Claims

1. A compressed gas bypass valve comprises a valve body, a valve head and an armature assembly, wherein the armature assembly comprises an armature, a guide rod fixedly connected with the armature, a sleeve sleeved on the periphery of the armature and a first bearing press-fitted in the sleeve; a first stator, a second bearing press-fitted in a guide groove of the first stator, a bobbin, and a coil wound on the bobbin are integrated in the valve body; the guide rod axially passes through the first bearing and the second bearing and can freely move in the first bearing and the second bearing, and the compressed gas bypass valve is characterized by further comprising a damping device for stroke stop when the valve head is opened.

2. The compressed gas bypass valve according to claim 1, wherein the damping means comprises a rubber layer vulcanized at an end of the guide rod adjacent to the first stator.

3. The compressed gas bypass valve according to claim 2, wherein a distance between the end portion of the vulcanized rubber layer of the guide rod and a bottom of the guide groove of the first stator is smaller than a distance between an end surface of the armature facing the first stator and an end surface of the first stator facing the armature in a fully closed state of the compressed gas bypass valve.

4. The compressed gas bypass valve according to claim 1, wherein the damping means comprises a rubber layer vulcanized on a bottom of the guide groove of the first stator.

5. The compressed gas bypass valve according to claim 4, wherein a distance between an end of the guide rod adjacent to the first stator and a rubber layer on a bottom of a guide groove of the first stator is smaller than a distance between an end face of the armature facing the first stator and an end face of the first stator facing the armature in a fully closed state of the compressed gas bypass valve.

6. The compressed gas bypass valve according to claim 2, wherein an end portion of the guide rod adjacent to the first stator has a reduced diameter such that an outer peripheral surface of a rubber layer vulcanized on the end portion follows a main body portion of the guide rod.

7. The compressed gas bypass valve according to any one of claims 1 to 6, wherein a toothed formation is provided on a portion of the length of the guide rod, the toothed formation frictionally engaging the central bore of the armature.