KR200426594Y1 - Blower having check valve for preventing flowing backward in outlet - Google Patents

Abstract

The present invention relates to a blower having a built-in means for automatically preventing the flow of air from other blowers through the outlet when connecting a plurality of blowers. To this end, when the blower does not operate because the exhaust pipe is mounted to the outlet of the blower, and the gasket is formed between the outlet and the discharge pipe, the check valve is formed hinged at the top and the hole is formed in which the check valve is seated. The check valve provides a configuration that automatically closes the outlet to block backflow into the blower. The blower according to the present invention has a built-in check valve for preventing the back flow in the discharge path has the effect of reducing the cost, time and effort to install a separate check valve for preventing the back flow in the pipeline connecting a plurality of blowers.

Blower, Check Valve, Backflow Prevention, Gasket, Outlet, Exhaust Pipe, Soundproofing Material

Description

Blower having check valve for preventing flowing backward in outlet

1 is a block diagram of a conventional check valve external blower system

2 is a structural diagram of a check valve built-in blower according to an embodiment of the present invention

Figure 3 is a detailed view of the check valve of the check valve built-in blower of Figure 2

4 is a block diagram of a check valve built-in blower system according to the present invention

* Explanation of symbols for the main parts of the drawings

1: blower 2: outer pipe

3: external check valve 10: housing

11: outlet 12: check valve

13: gasket 14: exhaust piping

15: sound insulation layer 16: sound insulation housing

17: bolt

The present invention relates to a blower, and more particularly, to a blower with a check valve for automatically closing the discharge port when the blower is not in operation to block the gas flow back into the blower.

Figure 1 shows the configuration of a conventional check valve external blower system. Referring to Figure 1, the conventional blower system is described as follows.

The blower is a machine that sends out a large amount of air artificially by increasing the pressure of air by the rotational movement of the impeller, comprising: a housing for totally embracing its components to reduce noise and vibration; a motor formed inside the housing; An inlet for introducing external gas into the motor and an outlet for discharging the introduced gas are configured.

Such a blower is used for various purposes such as storage management of grains requiring a large amount of air, inflation of fish farms, air circulation of septic tanks, supply of air for promoting combustion to boilers or furnaces, and air conditioners in buildings.

If one blower is continuously operated for the above purposes, the blower may be overheated or overloaded. In practice, a blower system is constructed by connecting two or more blowers and the place of use by a pipeline. Each blower in the system is operated alternately at regular intervals to prevent excessive blower operation.

However, when a part of the gas discharged from the blower operating in the blower system is transferred to the unoperated blower along the pipeline and flows back to the discharge port, not only the air volume and efficiency of the blower in operation are seriously lowered, There is a fear that the blower is in bad condition.

In order to solve such a problem, as shown in FIG. 1, in the related art, an external check valve 3 is necessarily formed in a pipeline connecting the blower 1, and each time the operation of the blower 1 is alternated. The external check valve 3 is opened and closed, and a technique of preventing backflow into the outlet of the blower 1 which is not operating is adopted.

In this way, if an external check valve is installed in the pipeline, a backflow can be prevented from flowing into the outlet of the inoperative blower. However, if an external check valve is installed in the pipeline, a separate connecting valve between the blower and the external check valve is provided. There is a need for a utility, and there is a problem in that it takes additional installation time as well as cost to connect such a device. In addition, since the external check valve occupies a large volume, a large space is required for installing the blower system, and the configuration of the pipeline may be complicated.

In order to solve the above problems, the present invention, for example, when there is a risk that backflow occurs in the outlet of the blower, such as when using a plurality of blowers connected, check valve that does not need to install an external check valve separately The purpose is to provide a built-in blower.

In order to achieve the object of the present invention described above, a blower having a check valve for preventing a backflow in the discharge path according to an embodiment of the present invention is mounted between the discharge pipe and the discharge port and the discharge pipe is mounted on the discharge port of the blower and And a gasket formed by hinged check valves and formed with holes for seating the check valves.

The perimeter of the check valve and the perimeter of the hole of the gasket are configured to coincide with each other. In addition, the discharge pipe is configured to include a soundproof material layer formed on the surface of the soundproof material layer and the soundproof material layer formed on the outer surface. On the other hand, the check valve and the gasket is configured by applying a Teflon material.

In order to achieve the object of the present invention described above, a blower having a check valve for preventing a backflow in the discharge path according to another embodiment of the present invention and the discharge pipe is mounted to the discharge port of the blower, and the inner upper portion of the discharge pipe is hinged A check valve is formed and a hole in which the check valve is seated is formed to include a gasket mounted between the outlet and the discharge pipe.

Hereinafter, with reference to the drawings will be described in detail the blower according to the preferred embodiments of the present invention. Figure 2 shows the structure of the check valve built-in blower according to an embodiment of the present invention, Figure 3 is a perspective view showing in detail the check valve portion of the check valve built-in blower of FIG.

2 and 3, the blower according to the present embodiment has a motor, a housing, an impeller, an inlet and an outlet. When power is applied to the motor of the blower, the impeller connected to the motor rotates, gas is introduced from the inlet by the rotational force of the impeller, compressed to a constant pressure, and the compressed gas is discharged through the outlet.

A discharge pipe 14 having a predetermined length is mounted on the discharge port 11 for discharging the compressed gas at a constant air pressure, and a discharge path is formed, and an external pipe 2 is fastened to the discharge pipe 14 to form a blower system. . Although the outlet 11 and the exhaust pipe 14 are firmly fastened, gas may leak from the gap between the outlet 11 and the discharge pipe 14, thereby reducing the efficiency of the blower 1 and the check valve 12. Can be.

Therefore, in order to prevent the leakage of gas in the gap between the discharge port 11 and the discharge pipe 14 and at the same time to prevent the reverse flow leakage in the gap between the discharge path and the check valve 12 and the discharge port 11 and A gasket 13 having a predetermined thickness is inserted between the discharge pipes 14. The outlet 11, the gasket 13 and the discharge pipe 14 is firmly fastened to each other by a known technique such as bolting, it is configured to be freely disassembled if necessary. For example, a bolt hole corresponding to each other is formed in the outlet 11, the gasket 13, and the discharge pipe 14 so that the outlet 11, the gasket 13, and the discharge pipe 14 are connected to the bolt 17. Tightly tightened by nuts.

According to one embodiment of the present invention, it includes a check valve 12 that is hinged to the upper portion of the gasket 13 mounted on the outlet 11 to open and close the discharge path in accordance with the flow of gas passing through the discharge path. That is, the check valve 12 and the gasket 13 are integrally formed.

The check valve 12 hinged to the upper portion of the gasket 13 is a structure for opening and closing the hole formed in the gasket 13 by the pressure of the gas passing through the discharge path. That is, the check valve 12 is hinged at the upper portion of the discharge path, and if there is no gas pressure discharged from the discharge port 11, the check valve 12 is maintained in a neutral position by gravity, so that the hole of the gasket 13 The discharge path is closed by being seated therein, and the check valve 12 is hinged to the outside of the outlet 11 by the gas pressure generated when the blower 1 is operated to discharge the gas through the outlet 11. The discharge path is automatically opened. Therefore, when the gas is discharged through the outlet 11, the check valve 12 is hinged at an angle perpendicular to or close to the outside of the outlet 11 so that sufficient space may be secured to completely open the discharge path. The discharge pipe 14 should be configured to have a diameter of.

On the other hand, when the operation of the blower 1 is stopped and the reverse flow is introduced through the discharge pipe 14, the check valve 12 is hinged inwardly of the blower 1 by the gas pressure. By means of pressure, the check valve 12 is hinged inward and the discharge path is opened, whereby means for blocking the check valve 12 is formed to prevent backflow from entering the blower 1.

Specifically, a hole in which the check valve 12 is seated is formed in the center of the gasket 13 to block the check valve 12 from being hinged into the outlet 11, and the hole and the check valve of the gasket 13 are formed. (12) is made in a shape that is exactly matched with each other so as to seal correctly.

For example, if the circumference of the check valve 12 is configured in a round shape in the thickness direction, the circumference of the hole of the gasket 13 is also configured in a round shape that exactly matches the check valve 12 in the thickness direction, and check When the circumference of the valve 12 is formed in the step shape in the thickness direction, the circumference of the hole of the gasket 13 is also configured in the step shape exactly matching the check valve 12 in the thickness direction.

Therefore, when the check valve 12 is maintained in the neutral position by gravity and is seated in the hole of the center portion of the gasket 13, the check valve 12 is prevented from being hinged in the inner direction of the housing 10 by the reverse flow. In addition, through the gap between the closed check valve 12 and the gasket 13, the back flow is completely blocked from flowing into the housing to stop the flow of all gas through the discharge path.

In addition, in order to reduce the weight of the check valve 12 and increase the adhesion between the holes of the check valve 12 and the gasket 13, a teflon material which is a super-engineering plastic having excellent chemical resistance and sealing function is applied. Thus, it is preferable to configure the gasket 13 and the check valve 12 hinged to the gasket 13. Since the Teflon check valve 12 is lightweight, the check valve 12 is easily hinged to open the discharge path even when the air volume of the gas discharged from the outlet 11 is small. In addition, the gasket 13 made of Teflon material has an excellent sealing function, and the adhesion between the hole of the gasket 13 and the check valve 12 is increased, thereby improving the backflow prevention function.

In addition, the soundproofing material having a constant thickness made of a soundproof material excellent in the function of absorbing noise and vibration on the outer surface of the discharge pipe 14 of a certain length formed by fastening the bolt 17 to the outlet 11 and the gasket 13 A layer 15 is formed, and a soundproof housing 16 is formed on its outer surface to support the soundproof material layer 15. Much of the noise and vibration generated from the motor and impeller of the blower 1 and discharged through the outlet 11 are absorbed and sound-absorbed by the soundproof material layer 15 formed on the outer surface of the discharge pipe 14.

In another embodiment of the present invention by forming a check valve is hinged on the inner upper portion of the discharge pipe is mounted to the outlet of the blower, the hole in which the check valve is seated is formed to form a gasket mounted between the outlet and the discharge pipe The blower is composed of a check valve in the discharge path.

As described above, it is possible to include a blower having a check valve embedded in the discharge path according to the present invention by including a backflow prevention means formed by hinged check valve in the upper portion of the discharge pipe.

As described above, although the blower having a check valve built in the discharge path is slightly increased as compared with the conventional blower, the conventional blower is required to separately install a separate external check valve. In view of the above, the blower system configured by applying the present invention can significantly reduce the overall cost compared to the conventional blower.

Figure 4 shows the configuration of a blower system to which the check valve built-in blower of the present invention is applied. Hereinafter, a blower system using a blower according to the present invention will be described in detail with reference to FIG. 4.

By connecting the blowers 1 in which the check valves 12 are incorporated to each other using only the pipe 2 and the related members, a blower system connected to a plurality of blowers made of pipelines is constituted. Since there is no need to install a separate backflow check valve in the pipeline, there is no need for a separate device or piping to connect the blower and the external check valve. This greatly reduces the amount of time and effort required to install the system. In addition, since the work of connecting the check valve to the blower is omitted, the work is easy to install the system. In addition, since the external check valve is not required, the volume and cost occupied by the system are greatly reduced.

In addition, the sound insulation layer 15 is formed in the discharge pipe 14 mounted on the discharge port 11 to generate a considerable portion of the noise and vibration generated from the motor and impeller of the blower 1 and discharged through the discharge port 11. Since the sound absorbing material is absorbed by the layer 15, the noise and vibration of the blower 1 are reduced.

The blower according to the present invention has a check valve for preventing a backflow in the discharge path, and automatically prevents the flow of other blowers into the blower through the outlet when using a plurality of blowers connected by a pipeline.

The built-in check valve saves time, effort and extra equipment for connecting the check valve and blower separately. In addition, the built-in check valve not only reduces the volume occupied by the device, but also combines the check valve with a conventional gasket or outlet in a hinged manner, thereby significantly reducing the cost of using a separate check valve.

On the other hand, since the lightweight and adhesive Teflon is applied to form a check valve and a gasket, the check valve can be easily hinged and the discharge path can be easily opened even if the amount of gas discharged from the outlet is small. The effect that the sealing function between is improved.

Although described above with reference to the preferred embodiments of the present invention, those skilled in the art can variously modify and change the present invention without departing from the spirit and scope of the present invention described in the claims below. I can understand that.

Claims (4)

In the blower, A discharge pipe mounted to an outlet of the blower; And And a check valve mounted between the outlet and the discharge pipe and having a hinged check valve and including a gasket having a hole in which the check valve is seated. The blower according to claim 1, wherein a check valve for preventing a back flow is incorporated in the discharge path, wherein the check valve is configured to coincide with the periphery of the check valve. The method of claim 1, Soundproof material layer formed on the outer surface of the discharge pipe; And A blower having a check valve for preventing a back flow in the discharge path, characterized in that it further comprises a soundproof housing formed on the surface of the soundproof material layer. In the blower, A discharge pipe mounted to an outlet of the blower; A check valve hinged to an upper portion of the discharge pipe; And A blower having a check valve for preventing a back flow in a discharge path including a gasket mounted between the discharge port and the discharge pipe to form a hole in which the check valve is seated.

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