JPH05168574A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To enable moisture separation accurately by controlling the number of revolutions of an electric blower in reverse proportion to an internal flow velocity of a moisture separation mechanism when dust containing moisture is sucked. CONSTITUTION:When water is sucked in by mistake during cleaning work, moisture is detected with a moisture sensor mounted at a local control section in a tube 42 to give a warning. By the warning, a moisture separation mechanism section 4 is connected to the local control section in the tube 42 at the tip of a hose 13 by single action. Here, the local control section itself or a control section in a cleaner body 6 recognizes the connection of the moisture separation mechanism 4 through the hand control section to switch the control. The condition of a load is detected with a pressure sensor in the cleaner body 6 to control the number of revolutions of an electric blower in the cleaner body 6 to keep the air velocity within the moisture separation mechanism 4 from rise exceeding a fixed value thereby ensuring a moisture separation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner using an electric blower, and particularly when dry dust and moisture are absorbed or water is mixed or only the moisture is directly sucked, an air flow is generated. The present invention relates to a vacuum cleaner having a water / water separation mechanism for separating and collecting dust and water.

[0002]

2. Description of the Related Art As a conventional technique relating to the present invention,
It was necessary to reduce the flow velocity in the part that separates the air flow from the water.Therefore, in the conventional large-scale water supply type vacuum cleaner, a part that reduces the flow velocity was provided in the part that flows from the water supply hose to the dust collection part of the main body case. A water vapor separation mechanism for separating the air flow and the water was provided in that portion. Also, in the case of a cordless small vacuum cleaner, the electric blower has a low performance, so that the flow velocity of the air / water separation mechanism is kept low, and the cross-sectional area of the water suction port is made small to obtain sufficient suction performance. ..

[0003]

SUMMARY OF THE INVENTION In the present invention, a water supply mechanism is provided in a compact and high-performance vacuum cleaner,
The problem is that it does not have an area that mechanically changes the flow passage area to reduce the flow velocity, so it is necessary to take measures to reduce the flow velocity. In addition, in order to ensure sufficient suction performance for general dust, it is twice to 4 times that of a small cordless vacuum cleaner.
The flow rate was doubled, and it was not possible to combine general waste that requires a high flow rate with water supply that requires separation of steam and water at a low flow rate. In addition, there was a problem that the water once separated from the water was soaked up by the turbulent flow in the air-water separation mechanism and mixed again with the air flow.

[0004]

[Means for Solving the Problems] In order to achieve both the general dust suction that requires a high flow velocity and the water supply during which the vapor-water separation is performed at a low flow velocity, it is necessary to reduce only the flow velocity during the vapor-water separation. As a method, there is a method of detecting the time of water supply by some method and lowering the output of the electric blower during the water supply work.Because the water once separated by steam separation does not mix with the air flow again, it is not loaded. It is to control the electric blower by using a sensor and a controller so that the output of the electric blower is reduced to maintain a low air volume and low suppression, and to maintain a low air volume and high static pressure for water supply under load.

[0005]

[Function] The water supply during the cleaning work is detected by some method to reduce the output of the electric blower during the water supply work, or the output of the electric blower is reduced to maintain a small air volume and low static pressure in the unloaded condition to maintain the load condition. In order to maintain a large air volume and high static pressure for cleaning water supply, by controlling the electric blower using a sensor and controller, the air-water separation work is performed reliably and at the same time the water collected once is separated. Can be prevented from mixing with the air flow again.

[0006]

EXAMPLE A vacuum cleaner 6 main body, a flexible hose 13 in front of the main body, a humidity sensor 14 attached to the inner wall of the flow path of the hose end, and a water / water separation mechanism 4 detachably connected to the tip of the humidity sensor 14. The air / water separation mechanism section 4 is composed of a mouthpiece section 15, a separation section 16, and a water retention section 17.
A sub-tank 19 having a float 18 at an upper opening is detachably attached to the water retaining portion 17, and the sub-tank 1
A dew condensation sensor 20 is attached to the upper side surface of 9, and a displacement sensor 21 is attached to the surface of the air / water separation mechanism portion 4.

The suction port 9 of the cleaner body 6 connected by the flexible hose 13 has a dust collecting portion 22 of the cleaner.
The dust collecting part 22 is a filter 5 for collecting fine dust.
Further, the electric blower 1 and the power supply device 2 for driving the electric blower 1 and the load are grasped by the pressure sensor 3 to control the electric blower 1 in the rear of the dust collecting portion 22, which is composed of the sub-filter 23 for protecting the electric blower 1. Control unit 7 and display board 24 for displaying the control state, and pressure sensor 3 for sensing the pressure of electric blower 1.
And cord 40 and cord reel 25 for supplying power
And an exhaust filter 26 for collecting fine dust contained in the exhaust flow discharged from the electric blower 1, and a rotatable dust collecting part side caster 27 for making the cleaner body 6 case movable and the electric blower 1 side It is composed of large wheels 28 fixed to both sides.

The air / water separating mechanism 4 is composed of a detachable hook 29, a seal packing (A) 30 for the float 18, a seal packing (B) 31 for the dew condensation sensor 20 and a removable clamp 32. A conventional cleaning tool such as an extension pipe 33, a general suction port 34, a brush suction port 35, etc., instead of the water separation mechanism section 4, has the same structure as before when used for dry dust.

According to the configuration of the vacuum cleaner of the present embodiment, in the conventional general cleaning work of dry dust, the air flow containing dust sucked from the general suction port 34 passes through the extension pipe 33 and the humidity sensor 14 and It passes through the bent pipe 42 having the handle control unit 36 and the handle 41, the hose 13, the dust collecting unit 22 of the cleaner body 6 and the filter 5 made of a breathable paper bag or the like, and dried there. The relatively large dust is separated from the air flow, and only the dust is filtered.
The airflow that is separated and captured inside passes through the sub-filter 23 for protecting the electric blower 1 and passes through the electric blower 1, and the exhaust filter 26 that captures 90% or more of dust of 0.3 micron is captured. The control of the electric blower 1 in this state, which passes through and is discharged into the atmosphere from the exhaust port 37 of the vacuum cleaner, is mainly performed by the pressure sensor 3 which is installed inside the cleaner body 6 and detects the pressure of the preceding stage of the electric blower 1. Based on the obtained information, it is controlled by the control unit 7 so as to obtain the optimum rotation of the electric blower 1, and by the humidity sensor 14 attached to the hand control unit 37,
When water is mistakenly sucked in during the conventional general cleaning work, the humidity is detected and the electric blower 1 is stopped or a warning is given by a display or a sound. The hand control part 3 at the tip of the hose 13
Connect to 6 with one-touch, then hand control unit 3
6 or the control unit 7 in the main body via the hand control unit 36, the terminal 38 provided at the connection portion of the water-water separation mechanism unit 4 with the hose 13 detects a change in resistance, the number of contacts, or recognition by light. The control unit switches the control by recognizing that the water separation mechanism unit 4 is connected. The control detects the load state by the pressure sensor 3 in the main body, and the electric blower prevents the wind speed in the steam separation unit 4 from rising above a certain level. The rotation speed of 1 is controlled, and if the wind speed of the separation unit 16 in the steam-water separation mechanism unit 4 is controlled to be 10.0 m / s or less, a steam-water separation rate of 99.9% or more can be secured. it can.

According to this embodiment, the flow velocity of the air flow containing water sucked from the suction port of the air / water separating mechanism has a flow rate of 30.0 m / s.
From the suction port set to 70.0 m / s, the speed is reduced to 10.0 m / s by the separation unit 16 and the separation unit 1
The water that has separated into the air and water collides against the wall of 6 and is separated into the water and the separated water is transmitted to the surface of the separation portion 16 and is accumulated in the water retaining portion 17 provided on the lower surface. The inlet is made small and stored in a detachably attached sub-tank 19. The back-flow preventing float 18 is provided at the inlet of the sub-tank 19, and the dew condensation sensor 14 communicates with the sub-tank 19 on the lower surface of the air / water separation mechanism 4. The fact that the sub tank 19 is full is transmitted to the control unit 7 of the cleaner body 6 to display a warning and stop the operation of the electric blower 1. The water / water separator is provided with a sensor 21 so as not to cause problems such as backflow or overflow of water, or failure in normal air / water separation when used or temporarily left at a certain tilt. The airflow separated by the section 4 passes through the hand control section 36 and the hose 13 and is sucked into the main body to form a filter 5 such as a filter 5 such as a breathable paper bag that constitutes the dust collecting section 22 of the cleaner main body 6. Passing The relatively large dust that is dried here is separated from the airflow, and only the dust is separated and captured in the filter 5. The airflow separated from the dust passes through the sub-filter 23 for protecting the electric blower 1 and passes through the electric blower 1. As described above, when 90% or more of dust of 0.3 micron is captured, it passes through the exhaust filter 26 and is discharged into the atmosphere through the exhaust port 37. In this case, if water is sucked into the main body for some reason, the electric blower 1 in front of A sensor for detecting moisture, such as a dew condensation sensor 20, is provided on the lower surface of the dust collection unit 22, and the control unit 7 in the main body uses the information to stop the electric blower 1 and display a warning table. It is designed to show.

In this embodiment, the vacuum cleaner is used even if the water supply is stopped and the water supply adapter (air-water separation mechanism 4) is stopped or removed, or the humidity sensor 14 stops detecting humidity and the hand control 36 is turned off. The controller 7 controls the main body 6 to operate for a certain period of time to remove the humidity in the main body 6 of the cleaner.

According to the present embodiment, (1) when supplying water during the cleaning work, the air-water separation work is surely performed, and at the same time, the water once separated by the water-water separation is prevented from being mixed with the air flow again. I can.

(2) Further, it is possible to provide a vacuum cleaner in which the electric blower, the filter, the power source section, the control section, etc. are not exposed to high humidity.

(3) Further, the absorbed water can be easily discharged.

(4) Further, the static pressure at the time of absorbing water can be increased to 10 times to 20 times that of a conventional household portable dry / wet type vacuum cleaner as well as that of a general dry cleaner, and it penetrates into the back of a jutan. It is possible to surely scoop up the water.

As another embodiment of the present invention, a control resistor of a phase control circuit for controlling an electric blower of a vacuum cleaner when the suction port is brought into contact with a load such as a floor to suck dust containing a liquid. The rotation of the electric blower in proportion to the load is detected by a sensor that changes resistance in inverse proportion to the load, such as a pressure-sensitive resistor or a current-sensitive resistor connected in series and in parallel via a switch. By controlling the number, and by configuring the circuit to reduce the flow velocity in the air / water separation mechanism when the load is light, the air / water separation can be reliably performed and the electric blower and the filter are not flooded by rewinding the water. It is a control circuit that disappears.

As effects of the other embodiments, (1) the circuit can be simplified and the water supply adapter can be supplied at a low cost, (2) the supply to the conventional vacuum cleaner and the upgrade of the new product can be easily performed. (3) Also, the development period can be shortened without the need to change the software of the control unit.

[0018]

EFFECT OF THE INVENTION Water supply attachment (air / water separation mechanism)
Since a general vacuum cleaner can be changed to a vacuum cleaner capable of supplying water for a small amount of water by a simple attachment / detachment operation, it is possible to inexpensively supply a wet and dry vacuum cleaner for home use.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is a sectional view of an embodiment of the present invention.

FIG. 3 is a sectional view of an embodiment of the present invention.

FIG. 4 is a sectional view of an embodiment of the present invention.

FIG. 5 is a circuit diagram of an embodiment of the present invention.

FIG. 6 is a block diagram of a circuit according to an embodiment of the present invention.

FIG. 7 is a flowchart of an embodiment of the present invention.

FIG. 8 is a flowchart of an embodiment of the present invention.

FIG. 9 is a flowchart of an embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Electric blower, 2 ... Power supply device, 3 ... Sensor, 4 ... Air / water separation mechanism part, 5 ... Filter, 6 ... Vacuum cleaner body, 7 ...
Control part, 9 ... Suction port, 10 ... Phase control circuit, 11 ... Control resistance, 12 ... Resistance change sensor, 14 ... Humidity sensor.

Claims (6)

[Claims] 1. An electric blower, a power supply device for driving the electric blower, a sensor for grasping a control state, an air / water separating mechanism for separating and collecting airflow and liquid, and a dust contained in the airflow are separated from the airflow. Information on the pressure or flow rate or flow velocity sensor when a dust containing liquid is sucked in a vacuum cleaner main body case for separating and integrally storing the filter and the component for collecting An electric vacuum cleaner characterized by being configured with hardware and software so as to perform control to increase and decrease the number of rotations of the electric blower in inverse proportion to the flow velocity inside the air / water separation mechanism. 2. An electric blower, a power supply device for driving the electric blower, a sensor for grasping a control state, an air / water separating mechanism for separating and collecting airflow and liquid, and a dust contained in the airflow are separated from the airflow. In a vacuum cleaner body case for separating and storing the filter and the above-mentioned components integrally for collecting, when dust containing liquid is sucked, moisture such as humidity sensor or dew sensor A detection sensor is provided on the electric blower side downstream of the air / water separation mechanism, and the signal obtained from the sensor reduces the rotation of the electric blower before and after the start of the air / water separation work in the air / water separation mechanism. In addition, when the control of increasing the rotation of the electric blower is performed at the end of the air-water separation work by the signal obtained from the sensor, and the sub-tank of the air-water separation mechanism is full. Vacuum cleaner, characterized in that to constitute a fatal hardware and softwares to stop the electric blower. 3. An electric blower, a power supply device for driving the electric blower, a sensor for grasping a control state, an air / water separation mechanism portion for separating and collecting airflow and liquid, and a dust contained in the airflow are separated from the airflow. A vacuum cleaner body case for separating and integrally storing the above-mentioned components and a filter for collecting water, and water supply work even if the control switch for stopping the electric blower is turned off after the water supply work is completed. When finished, the electric blower is characterized by removing the humidity inside the vacuum cleaner by controlling the electric blower to a high or low level depending on the number of revolutions when absorbing water or the value of the humidity sensor. 4. An electric blower, a power supply device for driving the electric blower, a sensor for grasping a control state, an air / water separation mechanism portion for separating and collecting airflow and liquid, and a dust contained in the airflow are separated from the airflow. A filter body for collecting and a cleaner body case for separating and accommodating the above-mentioned components integrally, in a lower part of the air / water separation mechanism part, separated from the water / water separation mechanism part by an isolation wall, and having a small diameter. One or a plurality of communication ports are connected to each other through a packing for air flow, and a valve or a float for preventing backflow is provided at the connection port, and a sub tank having a simple hook portion and a clamp is detachably provided on the outside. An electric vacuum cleaner characterized by having a steam separation mechanism. 5. An electric blower, a power supply device for driving the electric blower, a sensor for grasping a control state, an air / water separating mechanism for separating and collecting airflow and liquid, and a dust contained in the airflow are separated from the airflow. It is composed of a filter for collecting and a cleaner body case for separating and accommodating the above-mentioned constituent parts integrally. Air-water separation, in which a plurality of communication ports are connected in an air flow manner through packing, and further a valve or float for preventing backflow is provided at the connection port, and a sub-tank having a simple hook portion and a clamp is detachably provided on the outside. An electric vacuum cleaner having a structure having a mechanism part, which is provided with a sensor for detecting the amount of water in the sub tank. 6. An electric blower, a power supply device for driving the electric blower, a sensor for grasping a control state, an air / water separation mechanism portion for separating and collecting airflow and liquid, and a dust contained in the airflow are separated from the airflow. It is composed of a filter for collecting and a cleaner body case for separating and accommodating the above-mentioned constituent parts integrally. Air-water separation, in which a plurality of communication ports are connected in an air flow manner through packing, and further a valve or float for preventing backflow is provided at the connection port, and a sub-tank having a simple hook portion and a clamp is detachably provided on the outside. In a structure having a mechanism part and further provided with a sensor for detecting the amount of water in the sub-tank, a displacement sensor for detecting the inclination of the water-water separation mechanism part is provided on a part of the outer wall of the water-water separation mechanism part. Vacuum cleaner, characterized in that provided over.