JPS62194830A - Electric cleaner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a vacuum cleaner, and particularly to a vacuum cleaner that can control dust collection energy depending on the mass of sucked dust (hereinafter referred to as dust). It is.

[Conventional technology]

Conventionally, in order to reduce power consumption and noise according to the degree of accumulation of inhaled dust, the amount of dust flowing through the air passage was optically detected, and the dust collection motor was sent to the dust collection motor based on the detection signal. A device is known in which the power supply t' is controlled (Japanese Unexamined Patent Publication No. 118126/1983).

[Problem that the invention seeks to solve]

In general, vacuum cleaners require a large amount of force to suck up dust using airflow. However, in the conventional method mentioned above, which uses photoelectric methods to count the number of pieces of garbage, it is possible that the number of pieces of fighting garbage counted as much as or more than heavy garbage, even though it is sucked up using weak electricity. high energy consumption, resulting in excessive power consumption. On the other hand, a small piece of dust that weighs one weight may not be detected optically because it is in the shadow of other larger dust, resulting in incorrect counting.
There are problems such as not being able to obtain the necessary power. Furthermore, the optical method has practical problems, such as the light emitting element and the light receiving element becoming dirty with dust, resulting in a decrease in detection sensitivity.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a vacuum cleaner that can detect and control the necessary power depending on the amount of dirt.

[Defined means of solving problems]

In order to solve the above-mentioned problems, the present invention focuses on the mass of the dust rather than the amount of dust sucked in, and uses the electric power t required for the dust to drive the dust collection by detecting the quality t. It is designed to control the amount of power supplied, which is energy.

That is, one aspect of the present invention is to provide an intake vacuum cleaner with a mass detector in the intake passage for detecting the quality of dust flowing through the intake passage, and to drive the dust collection based on the output signal from the mass detector. The feature is that the amount of power supplied to the means is controlled.

[Effect]

As shown in FIG. 6, the amount of dust required to be sucked up from the floor by airflow is related not only to the amount of dust but also to the mass of the dust. The suction force for light (small mass) dirt may be small, but for heavy (large mass) dirt, the suction power must be increased. Therefore, according to the configuration of the present invention, the quality i of the dust is detected by the mass detector provided in the intake passage, and the amount of power supply required for dust collection is appropriately controlled based on the detection signal. This makes it possible to save energy and reduce noise. This means that
It is particularly used in vacuum cleaners that use batteries as a power source.

〔Example〕

Next, an embodiment of a vacuum cleaner according to the present invention will be described based on the drawings.

FIG. 1 shows the overall configuration of a vacuum cleaner in this embodiment. In FIG. 1, a suction port 20 containing a rotary brush 19 and a brush rotation motor 10 is connected to a flexible hose 7.
It is connected to the extension 'l#9 attached to the tip of the.

The bent pipe portion 8 connects the hose 7 and the extension pipe 9. The hose 7 is connected to the vacuum cleaner main body 1. 27
is a hand switch.

A check valve 5 is provided at the front of the main body 1, and a paper bag filter 2 is attached via a paper bag support 14. An auxiliary filter 3 is provided downstream of the paper bag filter 2 to collect fine dust that has blown through the paper bag filter 2. A dust collection motor 4 and a tth control board 21 for controlling the vacuum cleaner are provided at the rear of the main body 1. Further, as shown in FIG. 3, a mass detection device 112 for detecting the mass of dust is attached to the check valve 5 in the flow path on the intake side.

FIG. 4 shows an example of mounting the mass detector 11 in a vacuum cleaner using a foam filter instead of a paper bag filter. A mass detector 11 is attached to this.

At the rear of the main body l, there is a cord reel 24 that supplies power to the vacuum cleaner, and at the bottom of the main body there are casters 22.
and a wheel 6, and a huff dollar 23 is provided at the top.

Next, the electric circuit of the vacuum cleaner is shown in FIG.

In this embodiment, as the Komi AT detector 11,
In addition to using piezoelectric ceramics, it is also possible to use elements that detect vibration, sound pressure, or strain.

A manual control signal generating section 33 which outputs a manual control signal is provided in parallel with the mass detection device 11, and both can be switched by a switch. It is understood that the output signals of the mass detector 11 or the controller 33 as described above are analog quantities, and in order to be able to process them by the CPU 31, A-D conversion is required. Process with. The processed input signal passes through the input/output Cl10) circuit and is sent to the CPU3.
1 is processed. Processed data is temporarily held in RAM 30. t7'c, A to CPU31
Input/output controller! - Programs for performing rolls and calculations are stored in the ROM 30.

Next, the input processed according to the program within the CPO 31 is output from the CPU 31 through the turnout circuit I10.
It is displayed on the detection i display device 27.

On the other hand, the air volume regulator (FL
S) A signal is sent to the gate 29, and the dust collection motor 4 and brush rotation motor 10 can be controlled.

In this embodiment, piezoelectric ceramics are used as the mass detector 11. This is a polycrystalline ceramic that is fired and hardened at high temperatures. Electrodes are attached to this ceramic and a DC electric field is applied to polarize it.

To explain the movement f'f'' of dust suction according to the present invention, the rotating brush 1 rotates from the suction port 20 by the motor lO for 197 rotations.
The garbage scooped up by 9 is transferred to the extension pipe 9, the bent pipe 8,
Dust sucked into the main body through the hose 7 and the inlet 15 is collected in the paper bag filter 2, and fine dust passing through the paper bag filter 2t is collected by the auxiliary filter 3. Clean air is discharged through the blower 4. Next, referring to FIG. 3, check valve 5 of main body l
When the dust 12 hits the check valve 5, the mass of the dust is detected by the mass detection device 11 attached by adhesive or other method, and the control circuit including the CPU 31 on the control board 21 starts the dust collection motor 4. The power is controlled between 200W and 100OW, and the rotating brush motor is controlled between 50W and 300W.

15 Please refer to the flowchart shown in Figure 5.
The circuit operation will be explained. First, when you turn on the vacuum cleaner, the register in the CPO 31 is initialized, and then the dust collection motor 4 and rotating brush motor 10 are set to standard values of 600W and 150W, and the Ilo and D-A circuits are connected. The dust collection motor 4 and the rotary brush motor 10 are driven by the FLS 29 via the FLS 29. Dust on the floor is scraped up by the rotating brush, and air is sucked through the suction port 20, the extension pipe 9, and the bent pipe 8. When a mass of dust hits the mass detection device 11 attached to the check valve 5 of the r', +,'1 main body 1, it outputs an output t proportional to the mass, and the signal eA-D converter 32 and 110 circuit to the CPU 31, performs level judgment, and transmits the 9 motor control output corresponding to the detection signal to the FLS 29 via Ilo and the D-person conversion circuit 28, which controls the dust collection motor 4 and the rotary brush motor. 10, and after operating for a certain period of time, it is determined whether the SW is on or off, and if it is on, it is set to the standard input again, and the subsequent routine is repeated.

According to this embodiment, the problems of the conventional optical detection method, such as poor detection due to dust clogging of the detection unit and decreased sensitivity due to dust adhesion, are eliminated. In the case of light (small mass) debris, low output is used to detect heavy (
(Large mass) High power is used only when there is dust, so there is no waste of power consumption. In addition, if the detection amount display device is provided as in this embodiment, the user can judge whether there is dust on the floor just by looking at the level of the display, and it can be used in dark places or in places where dust cannot be directly seen, such as on a carpet. Effective for cleaning. Further, according to this embodiment, since the output is low except when necessary, the vacuum cleaner can be operated with low noise. In addition, even if there is a large amount of dust, the cleaning can be completed quickly because the power is high.

〔Effect of the invention〕

As described in detail above, the present invention detects dust in the suction air based on mass components, and controls the output of each motor based on the output signal from the detection device, so that the vacuum cleaner when not sucking dust It is possible to significantly reduce power consumption and reduce noise during operation.

[Brief explanation of drawings]

Fig. 1 is an overall configuration diagram showing an embodiment of the present invention, Fig. 2 is a circuit block diagram of an embodiment of the invention, Fig. 3 is a sectional view showing an example of adding a mass detector, and Fig. 4 is a diagram showing an example of the addition of a mass detector. FIG. 5 is a sectional view showing another embodiment of the present invention, FIG. 5 is a flowchart showing the operation of one embodiment of the present invention, and FIG. 6 is an explanation showing the correlation between the mass of trash and the appearance. 1...Vacuum cleaner body, 2...Paper bag filter, 3...
Auxiliary filter, 4... Dust collection motor, 5... Check valve, 7... Hose, 8... Bent pipe section, 9... Extension tube, 11... lX view detector , 15... Entrance, 1.9.
...Plan rotation motor. 20... Suction port. Dainokoto Patent Attorney Katsuo Ogawa

Claims (1)

[Claims] 1. In an intake vacuum cleaner, a mass detector is provided in the intake passage to detect the mass of dust flowing in the intake passage,
A vacuum cleaner characterized in that the amount of power supplied to a dust collection drive means is controlled based on an output signal from the mass detector. 2. The vacuum cleaner according to claim 1, characterized in that the mass detector is a piezoelectric transducer attached to the inflow side of a reverse valve provided at the intake port of the vacuum cleaner body. Vacuum cleaner.