JPH04341229A - Floating type vacuum cleaner - Google Patents

Abstract

PURPOSE:To improve the operability and the cleaning workability by detecting the cleaning surface in accordance with an output from a pressure receiving sensor for detecting the pressure in a pressure receiving chamber, and controlling automatically suction force corresponding to the cleaning surface, based on a result of this detection. CONSTITUTION:The floating type vacuum cleaner controls the suction force of a cleaner main body 1 by a signal from a pressure receiving sensor 17 for detecting the pressure in a pressure receiving chamber 9 by forming the pressure receiving chamber 9 in the lower part of the cleaner main body 1 having a motor-driven air blower 8 and a dust collecting chamber 3, and floating the cleaner maim body 1 by exhaust air of the motor-driven air blower 8 supplied to the pressure receiving chamber 9.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floating type vacuum cleaner in which a vacuum cleaner body is levitated using exhaust air from an electric blower, and more particularly to a floor surface detection means therefor.

0002

[Prior Art] Conventionally, in this type of floating electric vacuum cleaner, a power control switch is provided at the end of the bellows hose in order to control the suction force according to the surface to be cleaned, such as tatami mats, board surfaces, and carpets. This was done manually.

[0003] However, in the above configuration, the tatami, board surface,
The power control switch must be operated every time the surface to be cleaned, such as a carpet, changes, which is time consuming and has poor operability.

0004

SUMMARY OF THE INVENTION The present invention has been made in view of the above drawbacks, and an object of the present invention is to provide a floating electric vacuum cleaner that can automatically control suction power according to the surface to be cleaned. shall be.

[0005]

[Means for Solving the Problems] The present invention provides a vacuum cleaner body having an electric blower storage chamber for housing an electric blower and a dust collection chamber, a pressure receiving chamber with a bottom opening formed at the bottom of the vacuum cleaner body, and A floating vacuum cleaner comprising an exhaust port formed in a pressure receiving chamber, and in which a vacuum cleaner body is levitated by exhaust air from an electric blower supplied from the exhaust port to the pressure receiving chamber, and a sensor for detecting the pressure in the pressure receiving chamber. The present invention is characterized in that a control circuit is provided for controlling the suction force of the vacuum cleaner main body based on a signal from the sensor.

[0006]

According to the present invention, the pressure within the pressure receiving chamber is detected by a sensor, and a signal from the sensor is output to the control circuit. If air leaks from the gap between the bottom of the vacuum cleaner body and the cleaning surface and the pressure in the pressure chamber is low, it determines that the cleaning surface is a carpet and reduces the output of the vacuum cleaner to compensate for the decrease in suction power. In addition, if there is little air leakage from the gap between the convex part of the vacuum cleaner body and the cleaning surface, and the pressure in the pressure receiving chamber is high, it determines that the cleaning surface is a plate surface and reduces the output of the vacuum cleaner. The suction force of the vacuum cleaner body is controlled according to the floor surface.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to FIGS. 1 to 3.

Reference numeral 1 denotes a vacuum cleaner main body, which is provided with a dust collection chamber 3 having a dust collection bag 2 on its upper part, and the dust collection bag 2 is detachably attached by a hook body 4. Reference numeral 5 denotes a suction port formed in the dust collection chamber 3, to which a bellows hose 6 is detachably connected. Reference numeral 7 denotes an electric blower storage chamber provided at the lower part of the dust collection chamber 3, which houses an electric blower 8 therein. Below the electric blower storage chamber 7, there is a bottom opening between it and the floor. A pressure receiving chamber 9 is formed. Reference numeral 10 denotes a cord reel storage section formed at the bottom of the dust collection chamber 3 of the vacuum cleaner main body 1, in which a cord reel 11 is rotatably stored.

Reference numeral 12 denotes an exhaust port which is opened at the bottom and is formed all around the outer circumference of the bottom surface of the vacuum cleaner body 1, that is, the outer circumference of the pressure receiving chamber 9. Reference numeral 13 communicates the electric blower storage chamber 7 with the exhaust port 12. The exhaust air from the electric blower 8 passes through the exhaust passage 13 to the exhaust port 12.
It is designed to be discharged into the pressure receiving chamber 9.

Reference numeral 14 denotes an electronic component storage chamber formed in the pressure receiving chamber 9, which houses a board 15, and the board 15 includes:
Electronic components constituting a control circuit 26 (described later) that controls the suction force of the cleaner main body 1 based on signals from a dust collection sensor 16 and a pressure sensor 17 (described later) are mounted.

Reference numeral 16 denotes a dust collection sensor provided in the dust collection chamber 3, which detects the amount of dust in the dust collection bag 2 by detecting the pressure inside the dust collection chamber 3, and controls the control circuit described later. 26, a signal corresponding to the detected value is output. Reference numeral 17 denotes a pressure sensor disposed in the electronic component storage chamber 14, which detects the pressure within the pressure receiving chamber 9 and detects the type of surface to be cleaned based on this pressure, and outputs a signal to a control circuit 26 to be described later. It has become.

Reference numeral 18 denotes a filter disposed on the outer periphery of the exhaust port 12 of the vacuum cleaner body 1 over the entire circumference of the vacuum cleaner body 1, and has functions such as dust collection and deodorization.
2 to the pressure receiving chamber 9 is filtered through the filter 18.
The exhaust gas is discharged to the outside of the pressure receiving chamber 9 through the filter 18, and by passing through the filter 18, fine dust in the exhaust gas is removed and bad odor of the exhaust gas is deodorized. Numeral 19 is a leg attachment recess formed all around the outer circumference of the filter 18, and 20 is a leg housed in the leg attachment recess 19, which is elastically biased downward by a spring 21. has been done. Reference numeral 22 denotes a convex portion formed on the lower surface of the leg portion 20 and in contact with the floor surface, and an ultrafine brush 23, which is a low resistance member, is adhered to the surface of the convex portion 22. Reference numeral 24 denotes a substantially arc-shaped bumper extending from the lower end of the outer periphery of the leg attachment recess 19 and having an open upper end, and the deformation of the bumper 24 absorbs the impact upon collision with furniture or the like. ing.

Next, the circuit will be explained.

Reference numeral 25 denotes a switch circuit, which includes a power switch, a power control switch, an automatic/manual changeover switch, etc. (all not shown) formed on a handle provided at the tip of the bellows hose 6. 26 is a control circuit, which includes the pressure sensor 17, the dust collection sensor 16, and a switch circuit 25.
A signal is output to the drive circuit 27 based on the signal from the electric blower 8 and the rotating brush drive electric motor 28 provided in the floor suction device (not shown) is energized.

During cleaning, the air sucked into the vacuum cleaner body 1 flows through the dust collection chamber 3, the electric blower storage chamber 7, and the exhaust passage 13.
However, since the lower end surface of the vacuum cleaner main body 1 and the ultrafine brush 23 of the legs 20 are in contact with the floor surface, the pressure in the pressure receiving chamber 9 increases, and the vacuum cleaner main body 1 It floats up, and the exhaust gas passes through the filter 20 and is discharged. At this time, the leg portion 22 urged downward by the spring 21 protrudes from the leg attachment recess 19, and the floor surface is wiped by the ultra-fine brush 23 attached to the convex portion 22.
0 comes into contact with the floor surface to prevent leakage of exhaust gas from the vacuum cleaner, maintain the pressure in the pressure receiving chamber 9, and maintain the floating state of the cleaner body 1. Moreover, since one end of the bumper 24 is open,
Even when the cleaner body 1 comes into contact with furniture etc. during cleaning, the bumper 24 is prevented from warping and damaging the furniture etc.

Next, the operation will be explained in detail based on the flowchart shown in FIG.

First, in step S1, it is determined whether the pressure value inside the dust collection chamber 3 detected by the dust collection sensor 16 provided in the dust collection chamber 3 is high or low, and if the pressure inside the dust collection chamber 3 is low, that is, If the amount of dust in the dust collection bag 2 is small, in step S2, it is determined whether the pressure value in the pressure receiving chamber 9 detected by the pressure receiving sensor 17 is high. , the convex portion 22 of the leg portion 20 is in close contact with the cleaning surface and the pressure receiving chamber 9 is
Since there is little air leakage from the air, it is determined that the surface to be cleaned is flooring, and the electric blower 8 is driven at low output in step S3.

If the pressure value in the pressure receiving chamber 9 is not high in step S2, it is determined in step S4 whether the pressure value in the pressure receiving chamber 9 is medium or not, and if the pressure in the pressure receiving chamber 9 is medium, cleaning is performed. It is determined that the surface is a tatami mat, and the electric blower 8 is driven at a medium output in step S5.

If the pressure in the pressure receiving chamber 9 is not low in step S4, it is determined in step S6 whether the pressure value in the pressure receiving chamber 9 is low, and if the pressure in the pressure receiving chamber 9 is low, the There is a lot of air leakage from the gap between the convex part 22 of the part 20 and the pile of the carpet, and it is determined that the surface to be cleaned is a carpet, and the process is performed in step S7.
The electric blower 8 is driven at high output.

If the pressure value in the pressure receiving chamber 9 is not low in step S6, it is determined that the pressure in the pressure receiving chamber 9 is even lower and the carpet has long piles, and the electric blower 8 is set to the maximum output in step S8. Driven by

[0021] Further, in step S1, if the pressure in the dust collection chamber 3 is high, that is, if the amount of dust in the dust collection bag 2 is large, in step S9, the pressure in the pressure receiving chamber 9 detected by the pressure sensor 17 is It is determined whether the value is high or not, and if the pressure inside the pressure receiving chamber 9 is high, the convex portion 22 of the leg 20 is in close contact with the plate surface, there is less air leakage from the pressure receiving chamber 9, and the cleaning surface is a wooden floor. It is determined that the electric blower 8 is driven at a medium output in step S10 in order to compensate for the decrease in the suction force due to the dust in the dust collection bag 2.

If the pressure in the pressure receiving chamber 9 is not high in step S9, it is determined in step S11 whether the pressure value in the pressure receiving chamber 9 is medium or not, and if the pressure in the pressure receiving chamber 9 is medium, the concentration is In order to compensate for the decrease in suction power due to dust in the dust bag 2,
In step S12, the electric blower 8 is driven at high output.

If the pressure value in the pressure receiving chamber 9 is not within the range in step S11, the electric blower 8 is driven at the maximum output in step S13.

[0024]

[Effects of the Invention] As described above, according to the present invention, it is possible to automatically control the suction force to the optimum value depending on the surface to be cleaned, and it is possible to achieve effects such as improving operability and cleaning work efficiency. .

[Brief explanation of drawings]

FIG. 1 is a sectional view of a vacuum cleaner main body showing an embodiment of the present invention.

FIG. 2 is a circuit diagram of the same.

FIG. 3 is a flowchart showing the operation of the vacuum cleaner.

[Explanation of symbols]

1 Vacuum cleaner body 3 Dust collection room 7 Electric blower storage room 8 Electric blower 9 Pressure receiving chamber 12 Exhaust port 17 Pressure sensor

Claims (1)

[Claims] Claim 1: A vacuum cleaner body having an electric blower storage chamber for housing an electric blower and a dust collection chamber, a pressure receiving chamber with a bottom opening formed at the bottom of the vacuum cleaner body, and an exhaust port formed in the pressure receiving chamber. A floating vacuum cleaner in which a vacuum cleaner body is levitated by the exhaust air of an electric blower supplied from the exhaust port to the pressure receiving chamber, a sensor for detecting the pressure in the pressure receiving chamber is provided, and a sensor is provided to detect the pressure in the pressure receiving chamber, and a sensor is provided to detect the pressure in the pressure receiving chamber, , a floating vacuum cleaner characterized by being provided with a control circuit for controlling the suction force of the vacuum cleaner body.