JPS5857180B2 - vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a vacuum cleaner that is much quieter than conventional vacuum cleaners.

Conventional vacuum cleaners have a bad reputation as a source of noise in the home because the noise generated by the blower installed inside the main unit and the air flow noise generated inside the air duct propagate through the exhaust and intake air ducts and are transmitted to the outside. Ta.

In particular, noise tends to be emitted to the outside because the air passage on the intake side has a simple configuration because the dust suction capacity is not reduced.

The present invention solves the drawbacks of conventional vacuum cleaners of this type and provides an easy-to-use vacuum cleaner that reduces noise without reducing dust suction ability. 1 is a blower installed at the center, which is sandwiched between a blower case 4 and an upper case 5 via vibration-proof rubber A2 and vibration-proof rubber B3.

A dust collection case 8 having an annular filter 6 having a recess 21 in the center and a suction lower for connecting a hose (not shown) is airtightly and removably connected to the lower part of the blower case 4.

The filter 6 is composed of an annular filter material 9, an end plate A10 for fixing the filter material 9, and an end plate B11, and includes the bottom surface of the blower case 4 and the end plate A10.
An intake air passage 14 is secured between the filter material 9 and the intake port 13 of the blower installation chamber 12.

This intake air passage 14 is formed by a sound absorbing material 16 attached to the upper surface of the end plate A10, and a gap 15 through which intake air passes has a substantially constant size.

On the other hand, a sound absorbing structure 18 is provided around the blower installation chamber 12 in the blower case 4, and the exhaust gas is sound-absorbed and discharged from the exhaust port 19.

Furthermore, a cord reel (not shown) is attached to the top of the upper case 5.
A case 20 is installed in which the items such as the above are installed.

Since the present invention is configured as described above, floor-1
When the system is operated, air flows through the suction lower, the filter material 9, the intake air passage 14, the intake port 13, the blower 1, and the sound absorbing structure 18, and is discharged to the outside from the exhaust port 19.

Dust is sucked by this airflow, filtered by the filter material 9, and collected in the dust collection case 8.

Noise emitted from the floor 1 to the exhaust side is absorbed by various known sound absorbing structures 18, but noise emitted to the intake side is usually made up of the air intake port 13, air intake air passage 14, and filter material 9, in order to prevent the dust absorption ability from being reduced. Because the air path configuration is simple,
The opposite effect is that the sound is radiated to the outside without being absorbed.

However, according to the present invention, the sound absorbing material 16 is installed in the intake air passage 14 so as to form a substantially constant gap 15, and the air flow passes through the gap 15, so that the air passage resistance does not increase and the intake air The noise energy generated at the mouth 13 can be absorbed to a practically appropriate degree by the sound absorption effect of the intake air passage 14 up to the outer periphery of the sound absorbing material 16. This sound absorption effect is achieved by the gap 15.
If the passing wind speed is narrow enough that the airflow sound does not increase the overall sound pressure and is constant, the sound absorption effect will be greater.

In addition, since the sound absorbing material 16 is attached to the upper surface of the end plate AID, that is, it is installed in the central recess 21 of the annular filter 6, the gap 15 is automatically adjusted as long as the thickness of the sound absorbing material 16 is controlled. is constant, the above effects can be obtained, and the mounting space can be used effectively.

Furthermore, since the annular filter 6 and the sound-absorbing material 16 are installed approximately centered on the air intake port 13, there is also the effect that a uniform sound-absorbing effect can be obtained.

In addition, there is also noise that is radiated directly from the blower 1 to the outside of the main body through various parts, but since the blower 1 is surrounded by the cord reel case 14, etc., there is no noise that is emitted from the blower 1 through the air path. The level is extremely low compared to the incoming sounds.

In general, the sound absorbing material 16 is made of breathable glass wool, rock wool, urethane foam, etc., but by installing the sound absorbing material 16 on the downstream side of the filter material 9 as in the present invention, even if airflow passes through, It can be used for a long period of time without being contaminated by dust.

As described above, according to the present invention, a sound-absorbing material is installed in the central concave portion of the annular filter, which is installed approximately at the inlet of the blower case in which the blower that is the noise source is installed, with the central concave portion facing the inlet. Since the sound absorbing material is installed in the intake air path between the air intake port of the blower case and the filter material of the annular filter, the sound absorbing material can be attached using the end plate of the annular filter as it is, ensuring a uniform ventilation gap. At the same time, the sound absorption path is distributed evenly around the entire circumference, so it has a high sound absorption effect.Moreover, space can be used effectively, and installation is easy.Also, it does not increase intake resistance, so it has a high dust absorption capacity and is extremely useful. You can get a vacuum cleaner that is easy to use.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a vacuum cleaner showing an embodiment of the present invention;
FIG. 2 is a partially cutaway perspective view showing an example of the configuration of a filter and a sound absorbing material. 1 is a blower, 4 is a blower case, 6 is an annular filter, 13 is an intake port, 16 is a sound absorbing material, and 21 is a central recess.

Claims (1)

[Claims] 1. A sound absorbing material is fixed to one end plate of the annular filter and installed in the central recess of the annular filter, which is installed with the air inlet of the blower case as the approximate center and its central recess facing the air inlet, and this sound absorbing material and the A vacuum cleaner characterized in that an air intake path is formed by securing a substantially constant gap between the vacuum cleaner and the blower case.