JP2000014604A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum cleaner capable of exhibiting a sufficient dust- collecting capability even with a small suction motor. SOLUTION: An exhaust part 7 and a suction part 8 are formed inside a suction port 17 and exhaust air 9 released from the exhaust part 7 is made to beat a floor face and circulate into the suction part 8, the speed of the exhaust air 9 made higher than that of suction air 10. Therefore, the exhaust air 9 reaches the depth of the floor face with a long fluffy carpet and blows up dust to collect it into a dust-collecting chamber 2. Therefore, dust of a relatively large mass can be trapped in the dust-collecting chamber 2 without requiring a suction motor 4 of a great suction force.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner used in ordinary households, and more particularly to a vacuum cleaner for circulating exhaust gas from a suction motor to a suction port.

[0002]

2. Description of the Related Art A conventional vacuum cleaner will be described with reference to FIG. A dust collecting chamber 51 having a dust collecting bag 56 is provided above the suction motor 52, and the dust collecting chamber 51 and the floor nozzle 54 are connected by a hose 57. The dust is sucked by the suction motor 52 together with the air from the suction portion 55 on the bottom surface of the floor nozzle 54, rises inside the hose 57 against gravity, and the dust is filtered by the dust collecting bag 56, and the dust is collected by the dust collecting bag 51.
Captured inside. The sucked air passes through the dust bag 56, passes through the inside of the suction motor 52, and is discharged from the exhaust unit 53.

[0003]

However, in the conventional vacuum cleaner, the dust collecting chamber 51 and the suction motor 52 are located above the floor nozzle 54 and the suction part 55,
When moving the dust on the floor surface to the dust collection bag 56 in the dust collection chamber 51, it is necessary to lift it upward against the gravity and move it over a long distance. Sufficient power was required of the suction motor 52 to suck up the mass. As a result, the weight and volume of the body increase, further increasing power consumption, usability,
This was a cause of deterioration in operability.

An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide a vacuum cleaner which is small and lightweight and has excellent dust capturing ability.

[0005]

In order to achieve the above object, according to the present invention, a dust collecting chamber, a suction motor and a suction section are formed near a floor, and an air suction section is provided near the dust collecting chamber. As a result, dust and air move on a substantially horizontal plane near the floor, and are less likely to be hindered by gravity. In addition, by blowing the exhaust air to the floor, dust is blown up from the floor and the dust collection efficiency is improved. At this time, by adjusting the wind speed of the exhaust air blown to the floor surface, it is possible to prevent the dust on the floor surface from being scattered to the outside of the suction port, and to increase the blowing effect by the exhaust air. Further, since the distance from the suction section to the dust collection chamber is short, relatively large dust can be captured inside the dust collection bag without requiring a large suction force for the suction motor. In addition, since it is possible to collectively make the vacuum cleaner compact, a compact and lightweight vacuum cleaner can be configured.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION
In the vacuum cleaner, a suction unit communicating from the inside of the suction port to the dust collection chamber and an exhaust unit discharging the exhaust from the suction motor to the suction port are provided, and an airflow circulating from the exhaust unit to the suction unit is generated. Because the vacuum speed of the exhaust air discharged from the exhaust unit is higher than that of the intake air sucked into the intake unit, the exhaust air is blown strongly to the floor, so that carpets with long hairs are used. Dust and the like lurking in the deep part of the floor surface are raised from the floor surface to improve the dust collection efficiency.

According to a second aspect of the present invention, there is provided an intake section communicating from the inside of the intake port to the dust collection chamber, and an exhaust section for discharging exhaust gas from the suction motor to the intake port, from the exhaust section to the intake section. In the vacuum cleaner configured to generate a circulating air flow, the wind speed of the exhaust air discharged from the exhaust unit is set to be lower than the wind speed of the intake air sucked into the intake unit, so that the exhaust air is discharged from the floor surface. The dust blows up from the floor surface to improve dust collection efficiency. Further, the dust is prevented from scattering to the outside of the suction port due to the wind speed of the exhaust wind hitting the floor surface being too high.

According to a third aspect of the present invention, there is provided an intake section communicating with the dust collection chamber from the inside of the intake port, and an exhaust section for discharging exhaust gas from the suction motor to the intake port, from the exhaust section to the intake section. In the vacuum cleaner configured to generate a circulating airflow, the wind speed of the exhaust air discharged from the exhaust unit is substantially the same as the wind speed of the intake air sucked into the intake unit. By spraying the dust on the surface, the dust is blown up from the floor and the dust collection efficiency is improved. Further, the wind speed of the airflow generated from the exhaust part to the intake part is stabilized, and the dust released from the floor can be smoothly collected from the intake part.

According to a fourth aspect of the present invention, there is provided an intake unit communicating from the inside of the intake port to the dust collection chamber, and an exhaust unit discharging exhaust gas from the suction motor to the intake port. In the vacuum cleaner having a configuration in which a circulating air flow is generated, since the wind speed of the exhaust gas discharged from the exhaust unit or the wind speed of the intake air sucked into the intake unit or both of them can be adjusted, the vacuum cleaner has Depending on the type or the amount of dust in the dust collection chamber, etc., the dust collected on the floor is collected most efficiently while suppressing the scattering of dust to the outside of the suction port caused by the wind velocity of the exhaust air hitting the floor being too high. It is possible to adjust so that dust can be generated.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a side external view of a vacuum cleaner according to a first embodiment of the present invention, FIG. 2 is a front external view thereof, and FIG. 3 is a first embodiment. Exhaust air 9 inside
FIG. 4 is a side view showing the flow of intake air 10 and dust 3,
FIG. 4 is a sectional view taken along line AA. FIG. 5 shows the first embodiment of the present invention.
FIG. 6 is a configuration diagram around the suction port 20 of the vacuum cleaner according to the embodiment, and FIG. 6 is a sectional view taken along line BB of FIG.

In FIG. 1, reference numeral 1 denotes a cleaner body, in which a dust collecting chamber 2, a suction motor 4, a rotary brush driving motor 5, a rotary brush 6, a suction fan 12, a dust filter 13, a belt 14, and a rotary brush are provided. It has a pulley 15 and a rotating brush bearing 16. The opening area of the exhaust unit 7 is larger than that of the intake unit 8. The suction fan 12 is driven by the suction motor 4 to bring the inside of the dust collection chamber 2 into a negative pressure state. The exhaust air 9 discharged from the suction motor 4 is blown against the floor from the exhaust part 7 communicating with the suction port 20 from the rear of the suction motor 4. Exhaust air 9
Is blown against the floor in a state where the wind speed is suppressed because the opening area of the exhaust part 7 is large. As a result, the dust 3 on the floor is blown off inside the suction port and is separated from the floor. In addition, inside the suction port 20, the rotating brush 6, which is rotatable with the cleaner body at both ends by rotating brush bearings 16, is provided.
The rotating brush 6 is rotated by receiving power from the rotating brush driving motor 5 via a rotating brush pulley 15 and a belt 14 provided on the rotating brush 6. As the rotating brush 6 rotates, dust lurking behind the hairs on the floor such as a carpet is scraped out. The dust 3 released from the floor surface by the rotating brush 6 and the exhaust air 9 rides on an airflow circulating from the exhaust unit 7 to the intake unit 8, and the dust collection chamber 2 is supplied from the intake unit 8.
It is carried inside, and is accumulated inside the dust collection chamber 2 by the dust collection filter 13.

(Embodiment 2) FIG. 7 is a structural view of the vicinity of a suction port 20 of a vacuum cleaner according to a fifth embodiment of the present invention.

The difference from the first embodiment is that the opening area of the exhaust unit 7 is reduced. In the figure, the components having the same reference numerals as those in the first embodiment have the same structure, and the description thereof will be omitted.

Next, the operation and the operation will be described. In this configuration, the opening area of the exhaust portion 7 is reduced to increase the wind speed of the exhaust air 9 and hit the floor.

(Embodiment 3) FIG. 8 is a view showing the configuration around a suction port 20 of a vacuum cleaner according to a sixth embodiment of the present invention.

The difference from the first embodiment is that an air flow control valve 2 for controlling the amount of air passing near the exhaust part 7 and the intake part 8 is provided.
5 is provided. This air volume control valve 25 is
Since it is configured to be slidable left and right, the opening areas of the exhaust unit 7 and the intake unit 8 can be freely adjusted.

In the figure, components having the same reference numerals as those in the first embodiment have the same structure, and therefore the description thereof will be omitted.

Next, the operation and operation will be described. The air flow control valve 2 is provided at each opening of the exhaust part 7 and the intake part 8.
5 are provided. Since the air volume control valve 25 is configured to be slidable left and right, the opening areas of the exhaust unit 7 and the intake unit 8 can be freely adjusted.

Although the above embodiment shows a stick type, the same applies to an upright or canister type vacuum cleaner.

[0021]

According to the first aspect of the present invention,
In the vacuum cleaner, a suction unit communicating from the inside of the suction port to the dust collection chamber and an exhaust unit discharging the exhaust from the suction motor to the suction port are provided, and an airflow circulating from the exhaust unit to the suction unit is generated. Because the vacuum speed of the exhaust air discharged from the exhaust unit is higher than that of the intake air sucked into the intake unit, the exhaust air is blown strongly to the floor, so that carpets with long hairs are used. Dust and the like lurking in the deep part of the floor surface are raised from the floor surface to improve the dust collection efficiency.

According to the second aspect of the present invention, there is provided an intake section communicating with the dust collection chamber from the inside of the intake port, and an exhaust section for discharging exhaust gas from the suction motor to the intake port. In the vacuum cleaner configured to generate an airflow circulating to the exhaust unit, the exhaust air discharged from the exhaust unit has a lower wind speed than the intake air sucked into the intake unit. By blowing the dust on the floor, dust is blown up from the floor, improving dust collection efficiency. Further, the dust is prevented from scattering to the outside of the suction port due to the wind speed of the exhaust wind hitting the floor surface being too high.

According to the third aspect of the present invention, there is provided an intake section communicating with the dust collection chamber from the inside of the intake port, and an exhaust section for discharging exhaust gas from the suction motor to the intake port. In the vacuum cleaner configured to generate an airflow circulating to the exhaust part, the wind velocity of the exhaust air discharged from the exhaust part is substantially the same as the wind velocity of the intake air sucked into the intake part. Is blown up on the floor surface, so that dust is blown up from the floor surface and the dust collection efficiency is improved. Further, the wind speed of the airflow generated from the exhaust part to the intake part is stabilized, and the dust released from the floor can be smoothly collected from the intake part.

According to the fourth aspect of the present invention, there is provided an intake section communicating from the inside of the intake port to the dust collection chamber, and an exhaust section for discharging exhaust gas from the suction motor to the intake port. In the vacuum cleaner having a configuration in which an airflow circulating to the section is generated, since the wind speed of the exhaust air discharged from the exhaust section or the wind velocity of the intake air sucked into the intake section or both of them can be adjusted, the floor cleaner is used. Depending on the type of surface or the amount of dust in the dust collection chamber, the efficiency of the dust on the floor surface is minimized while suppressing the scattering of dust to the outside of the suction port caused by the wind speed of the exhaust air hitting the floor surface being too high. It is possible to adjust so that dust can be collected well.

[Brief description of the drawings]

FIG. 1 is a side external view of a vacuum cleaner according to a first embodiment of the present invention.

FIG. 2 is a front external view of the vacuum cleaner.

FIG. 3 is a side view showing an exhaust wind, an intake wind, and a flow of dust of the vacuum cleaner.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a configuration diagram around a suction port of the vacuum cleaner.

FIG. 6 is a sectional view taken along line BB of FIG. 5;

FIG. 7 is a configuration diagram around a suction port of a vacuum cleaner according to a second embodiment of the present invention.

FIG. 8 is a configuration diagram around a suction port of a vacuum cleaner according to a third embodiment of the present invention.

FIG. 9 is a partially cutaway side view of a conventional vacuum cleaner.

[Explanation of symbols]

 2 Dust collection chamber 4 Suction motor 7 Exhaust section 8 Intake section 9 Exhaust air 10 Intake air 17 Suction port

 ──────────────────────────────────────────────────続 き Continued from the front page (72) Inventor Tamaki Nishikori 1006 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. F-term (reference) 3B057 DE00 3B061 AA05 AD05 AE02 AH02

Claims (4)

[Claims] An intake section communicating from the inside of the suction port to the dust collection chamber and an exhaust section discharging exhaust gas from the suction motor to the suction port are provided, and an airflow circulating from the exhaust section to the intake section is generated. An electric vacuum cleaner, wherein the wind speed of exhaust air discharged from an exhaust unit is higher than the wind speed of intake air sucked into an intake unit. 2. An intake section communicating from the inside of the suction port to the dust collection chamber, and an exhaust section discharging exhaust gas from the suction motor to the suction port are provided to generate an airflow circulating from the exhaust section to the intake section. An electric vacuum cleaner, wherein the wind speed of exhaust air discharged from an exhaust unit is lower than the wind speed of intake air sucked into an intake unit. 3. An intake section communicating from the inside of the suction port to the dust collection chamber, and an exhaust section discharging exhaust gas from the suction motor to the suction port are provided to generate an airflow circulating from the exhaust section to the intake section. An electric vacuum cleaner, wherein the wind speed of exhaust air discharged from an exhaust unit is substantially equal to the wind speed of intake air sucked into an intake unit. 4. An intake section communicating from the inside of the suction port to the dust collecting chamber, and an exhaust section discharging exhaust gas from the suction motor to the suction port are provided, so that an airflow circulating from the exhaust section to the suction section is generated. An electric vacuum cleaner wherein the wind speed of exhaust gas discharged from an exhaust portion and / or the wind speed of intake air sucked into an intake portion can be adjusted.