KR970009720A - Sound-absorbing room of vacuum cleaner with vacuum pressure protection device - Google Patents

Abstract

The present invention provides a vacuum pressure protection device that is improved to prevent the motor and the sound-absorbing room from being burned and damaged when a vacuum is formed inside the motor and the sound-absorbing room when the dust is filled in the dust chamber and the air is not supplied to the motor side. It relates to the sound absorption room of the equipped vacuum cleaner.

The present invention is a sound absorption room that incorporates a motor of the vacuum cleaner and shields the noise generated by the motor from leaking to the outside, surrounding the motor, having a cylindrical shape and forming an exhaust passage between the motor and the inside. The external casing is configured to allow the exhaust discharged from the motor to escape to the outside and to shield the noise. The vacuum casing is provided with an external air inlet means for introducing external air when a vacuum pressure is formed inside the motor. Provides a sound absorbing room equipped with a vacuum cleaner.

Description

Sound-absorbing room of vacuum cleaner with vacuum pressure protection device

Since this is an open matter, no full text was included.

1 is a cross-sectional view showing a conventional sound-absorbing room internal structure built in a general vacuum cleaner

2 is a block diagram of a dust indicator equipped with a general vacuum cleaner

3 is a block diagram of a sound absorbing room having a vacuum pressure protection device according to the present invention.

4 is an operating state diagram of the vacuum pressure protection device according to the present invention

5 is a cross-sectional view taken along the line A-A of the vacuum pressure protection device shown in FIG.

Claims (4)

In the sound absorption room which incorporates the motor (3) of the vacuum cleaner and shields the noise generated by the motor (3) from flowing out, it surrounds the motor (3) and has a cylindrical shape and the motor (3) inside An exhaust flow path p is formed between the external casing 52 and the outside casing 52 which is configured to allow the exhaust gas discharged from the motor 3 to escape to the outside and shield the noise. Sound absorbing room of the vacuum cleaner with a vacuum pressure protection device, characterized in that it is equipped with an external air inlet means 55 to be introduced. According to claim 1, The outside air inflow means 55 is a circular rib 60 protruding on the front upper side of the outer casing 52, the circular rib 60 is a body 62 having a cylindrical structure The lower end portion of the elastic spring 66 is fitted in the press-fit state, the elastic spring 66 is fitted into the body 62, the sealing plate 68 is fixed to the upper end of the elastic spring 66 and the sealing plate 68 is Sound absorbing room of the vacuum cleaner with a vacuum pressure protection device, characterized in that the fall out is prevented by the cap (70) fitted in the upper end of the cylindrical body (62). According to claim 2, The sealing plate 68 is formed in the outer circumferential surface a plurality of grooves (68a) long, up and down so that the groove 68a is a passage of a predetermined size between the inner peripheral surface of the cylindrical body (62) The cap 70 has a through hole 70a formed at the center thereof, but the inner diameter d ₁ of the through hole 70a is smaller than the inner diameter d ₂ of the cylindrical portion 62. Vacuum cleaners with vacuum pressure protection. According to claim 1, wherein the upper side of the cap 70 has a circular rib 74 protruding and the circular rib 74 is connected to the lower end of the air inlet conduit 78 extending downward from the body cover of the cleaner And, the air inlet conduit 78 is a sound absorbing room of the vacuum cleaner with a vacuum pressure protection device, characterized in that the vent (80) is formed in the body (1) is located. ※ Note: The disclosure is based on the initial application.