KR20020007241A - A moment pressure a setoffe apparatus a car air cleane - Google Patents

Abstract

PURPOSE: A momentary pressure compensating device for a vehicle air cleaner is provided to properly compensate momentary pressure harder than regular caused by a backfire from an engine by attaching a relief valve on the body or the cover of the air cleaner. CONSTITUTION: An air cleaner(100) consists of an air cleaner body(102) embedding an air filter and an air cleaner cover covering the air cleaner body. A relief valve(110) is installed on the air cleaner body to properly compensate momentary pressure harder than regular during a backfire from an engine. The relief valve is usually closed but opened when momentary pressure is harder than regular to compensate the momentary pressure. The relief valve comprises a pressure discharge hole penetrated through the air cleaner, a cylindrical valve body fixed to the pressure discharge hole, a valve sheet elastically opened only when pressure is getting harder than regular and a noise control member attached on the bottom of the valve sheet to prevent noise during the opening of the valve sheet. Therefore, the relief valve prevents the air cleaner body and the cover from being damaged and the air filter from being warped. Finally, the air cleaner is stably operated without failure.

Description

A moment pressure a setoffe apparatus a car air cleane}

The present invention relates to an air cleaner that filters dust and various foreign substances in the air supplied to an engine of an automobile. More specifically, a back valve of the engine is provided by installing a relief valve on the air cleaner. The instantaneous pressure in the air cleaner according to the present invention relates to an instantaneous pressure canceling device for an automotive air cleaner that can be safely used without damaging various air intake-related components.

In general, the air cleaner is a device for supplying only the clean air to the engine by removing dust and other impurities in the air supplied to the combustion chamber of the automobile engine, such an air cleaner and a cylindrical air cleaner body in which the air filter is usually mounted The cover is covered with a holder member of a predetermined form for opening and closing the cover.

However, in the case of the LPI vehicle, a backfire phenomenon occurs due to incomplete combustion, and during this backfire phenomenon, a pressure exceeding a certain amount of pressure is momentarily acted on the inside of the air cleaner. This causes problems such as shortening the life of various components.

However, the conventional air cleaner comprises an air cleaner body 10 having an air inlet 11 and an air cleaner cover 12 having an air outlet 13 as shown in FIG. A filter 14 for filtering is built in, and the body 10 and the cover 12 have a structure that is fastened and fixed by the clamp 16 of the elastic member.

Therefore, in the case of the conventional air cleaner structure, the air that is required by the engine is introduced through the inlet hole 11 of the air air cleaner body 10 and at the same time passes through the air filter 14 mounted therein, the filtered air is It is a structure that is discharged and supplied through the outlet 13 of the air cleaner cover 12.

Therefore, in the case of the conventional air cleaner structure, there is no separate device for canceling the instantaneous pressure generated by the flashback phenomenon other than specified. Therefore, when instantaneous pressure is generated inside the air cleaner, since the instantaneous pressure does not adequately compensate for the narrow cross-sectional area of the air duct, the pressure exceeding the prescribed pressure is released from the clamp 16 of the elastic member according to the action of the force to be discharged to the outside. And the body 10 and the cover 12 which are not only to be damaged but also mainly to be injected into the plastic, do not overcome the instantaneous pressure due to the characteristics of the material, and in particular, the function of the air cleaner due to the breakage and damage of various components in the air intake system, In addition, there is a problem that significantly lowers the reliability of the product.

Therefore, the present invention has been invented to solve such a conventional problem, the object of the present invention is to attach a relief valve for offsetting the instantaneous pressure to a predetermined point of the body or cover of the air cleaner, the prescribed value according to the backfire phenomenon of the engine It is to provide an instantaneous pressure canceling device for an automotive air cleaner which is configured to properly cancel the above instantaneous pressure when generated inside the air cleaner.

1 is an assembled perspective view of an air cleaner according to the related art,

2 is an assembled perspective view showing an air cleaner structure according to the present invention;

3 is a perspective view showing a relief valve structure according to the present invention;

Figure 4 is an excerpted side cross-sectional view of the valve plate of the relief valve according to the present invention closed by the biasing force of the elastic member;

Fig. 5 is an excerpted side cross-sectional view of the valve plate of the relief valve according to the present invention in an open state due to instantaneous pressure generation above a prescribed value.

※ Code explanation about main part of drawing ※

100: air cleaner 102: air cleaner body

104: air cleaner cover 110: relief valve

112: pressure discharge hole 114: valve body

116: elastic member 118: valve plate

120: noise prevention member

Technical features of the present invention for achieving the above object, in the known air cleaner consisting of an air cleaner body in which an air filter is built, and a cover detachably attached thereto, at a predetermined point of the air cleaner to the back of the engine This is because the relief valve is configured to properly offset the instantaneous pressure generated in the air cleaner.

In addition, the relief valve is preferably attached to the air cleaner body.

In addition, the relief valve is a pressure discharge hole formed in the air cleaner and the valve body mounted on the pressure outlet portion, the valve plate which is elastically installed to open and close one end by the elastic member to one side of the valve body and is opened only at a pressure above the prescribed and It is very preferable that the noise prevention member is configured to prevent noise generated by contact with the valve body during the opening and closing operation of the valve plate.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.

First, as shown in FIG. 2, the air cleaner 100 includes an air cleaner body 102 in which an air filter of a predetermined type is not shown, and an air cleaner cover 104 covered to cover the air cleaner.

In addition, the air cleaner body 102 is equipped with a relief valve 110 for appropriately canceling an instantaneous pressure exceeding a predetermined level generated inside the air cleaner 100 when the engine is backfired.

The relief valve 110 is normally closed, but when the instantaneous pressure is generated in the air cleaner 100 due to the backfire phenomenon, the opening operation is performed to properly cancel the instantaneous pressure to a pressure below the reference value. .

On the other hand, the relief valve 110 does not necessarily need to be attached to the air cleaner body 102, and in view of its function, as long as it is possible to offset the discharge of the instantaneous pressure, of course, it can be attached to the air cleaner cover 104 as well.

As shown in FIG. 3, the relief valve 110 according to the present invention includes a pressure discharge hole 112 formed through a predetermined point of the air cleaner 100, and fastened and screwed to the pressure discharge hole 112. A cylindrical valve body 114 to be formed, a valve plate 118 elastically installed to be opened and closed operation by the elastic member 116 to one open end of the valve body 114, and to be opened and closed only at a pressure higher than a prescribed value, It is composed of a noise preventing member 120 attached to the bottom to prevent noise during the opening and closing operation of the valve plate 118.

Here, the noise preventing member 120 is preferably a sponge, and if it is a material capable of preventing noise other than that, there is no need to be particularly limited, and the elastic member 116 is preferably a torsion spring, but the opening and closing operation of the valve plate 118 is possible. Any elastic member of the form is possible.

In addition, the valve plate 118 is normally closed by the biasing force of the elastic member 116, and can be opened and operated only when a pressure exceeding the prescribed value is applied. This means that the biasing force of the elastic member 116 is limited to the instantaneous pressure above the prescribed value. It is possible to achieve a smooth opening and closing operation by adjusting in advance to open.

The instantaneous pressure canceling state of the present invention configured as described above will be described in detail with reference to FIGS. 4 and 5.

First, as shown in FIG. 4, the valve body 114 of the relief valve 110 is fastened to a pressure discharge hole 112 formed by the air cleaner body 102 with a known screw. At this time, the valve plate 118 is normally closed by the biasing force of the elastic member 116.

However, when the instantaneous pressure is generated in the air cleaner 100 due to the backfire of the engine, the pressure is generated in the air cleaner more than specified because the narrow cross-sectional area of the air duct cannot be canceled.

As described above, when an instantaneous pressure exceeding the prescribed level is generated in the air cleaner 100, the valve plate 118 is opened to one side despite the biasing force of the elastic member 116 due to the discharge pressure as shown in FIG. When discharged to the outside (arrow direction A in Fig. 5) to be offset by the pressure below the prescribed value, when the pressure is canceled below the prescribed value, the valve plate 118 is again shown by the biasing force of the elastic member 116. It is closed together.

When the valve plate 118 is opened and closed, noise is not generated at all by contact with the valve body 114 by the noise preventing member 120 attached to the bottom thereof, thereby enabling stable operation of the valve.

Therefore, the valve plate 118 of the relief valve 110 is opened quickly only when the instantaneous pressure in the air cleaner 100 is generated above the prescribed value due to the backfire phenomenon of the engine by the biasing force of the elastic member 116. And other than that is to close the operation to perform the appropriate pressure offset operation, eventually the air cleaner 100 inside the air cleaner even if the backfire phenomenon caused by the engine is always adjusted to the pressure below the specified value, the air cleaner body of the plastic product ( The damage of the air filter 102 and the cover 104 may be prevented, and the breakage and crush of the air filter may be prevented. In particular, the damage of various components or devices of the air intake system may be prevented, thereby enabling the air cleaner to perform a stable function.

As described above, according to the present invention, since the instantaneous pressure generated inside the air cleaner by the flashback phenomenon of the engine is always offset and regulated to a pressure below the prescribed value, it is possible to use the air cleaner stably and prevent damage to related components. It has an effect.

Although the present invention has been described with reference to the accompanying drawings, many modifications and variations may be made without departing from the scope of the following claims.

Claims (3)

In a known air cleaner 100 comprising an air cleaner body 102 in which an air filter is embedded, and a cover 104 detachably attached thereto: As a predetermined point of the air cleaner 100, a relief valve 110 for appropriately offsetting the instantaneous pressure above a prescribed value due to the backfire phenomenon of the engine is generated by attaching and configuring the vehicle. Air cleaner momentary pressure canceller. The apparatus of claim 1, wherein the relief valve (110) is attached to an air cleaner body (102). According to claim 1, The relief valve 110, the pressure discharge hole 112 formed in the air cleaner 100, the valve body 114 mounted to the pressure discharge hole 112, and the valve body The valve body 118 which is elastically installed at one end by the elastic member 116 to be opened and closed by the elastic member 116 and opened only at a pressure higher than a prescribed value, and the valve body at the time of opening and closing the valve plate 118. Automotive air cleaner instantaneous pressure canceller, characterized in that it comprises a noise preventing member 120 for preventing noise due to contact with the 114.