JP2011030874A - Vacuum cleaner - Google Patents

Abstract

A vacuum cleaner that efficiently sucks airborne dust in air.
An electric blower that generates suction air, a suction tool including a floor suction port that sucks dust on the floor by the suction air of the electric blower, and an upper surface and / or a side surface of the suction tool. Provided in the air intake 12 for sucking airborne dust, opening area setting means for changing the opening area of the air intake 12, and an acceleration sensor for detecting the reciprocating motion of the suction tool 7 (acceleration detection). The opening area setting means increases the opening area of the air inlet 12 when the acceleration of the reciprocating motion detected by the acceleration sensor 16 is equal to or greater than a predetermined threshold. When the dust raised by the reciprocating operation increases, the opening area of the air intake port 12 can be increased, and both floating dust and dust on the floor surface can be efficiently sucked.
[Selection] Figure 2

Description

  The present invention relates to a vacuum cleaner, and more particularly to control for sucking airborne dust.

  As a conventional vacuum cleaner of this type, there is one in which a large number of micro holes are provided on the upper surface of the suction tool to suck airborne dust in the air (for example, see Patent Document 1).

Japanese Patent No. 2817004

  However, in the conventional configuration, since the minute holes on the upper surface of the suction tool are always opened with the same opening area, a certain amount of floating dust suction effect can be expected, but depending on the operating condition of the suction tool, Therefore, when the opening area is fixed, it cannot cope with the change in the amount of floating dust.

  This invention solves the said conventional subject, and it aims at providing the vacuum cleaner which can attract | suck floating dust efficiently by changing the opening area of an air intake port according to operation | movement of a suction tool. .

  An electric blower that generates suction air, a suction tool that includes a floor surface suction port that sucks dust on the floor surface by the suction air of the electric blower, and an upper surface and / or a side surface of the suction tool. An air intake for sucking airborne dust; an opening area setting means for changing an opening area of the air intake; and an acceleration detection means for detecting an acceleration of a reciprocating operation of the suction tool. When the acceleration of the reciprocating motion detected by the acceleration detecting means is greater than or equal to a predetermined threshold, the opening area of the air intake port is increased.

  When the user reciprocates the suction tool, the dust rises and the amount of floating dust increases. Moreover, the tendency becomes stronger as the reciprocating motion becomes intense. If the opening area of the air intake is made large in advance, it is suitable for sucking floating dust, but the force for sucking dust on the floor surface is weakened. Conversely, when the opening area of the air intake is reduced, the force for sucking floating dust is weakened, but the force for sucking dust on the floor surface is increased.

  Therefore, when the acceleration of the reciprocating motion of the suction tool exceeds a preset threshold value, the floating area that has been swollen by the reciprocating motion of the suction tool is efficiently sucked by increasing the opening area of the air intake port. It becomes possible.

  The vacuum cleaner of the present invention can provide a vacuum cleaner capable of sucking floating dust and dust on the floor in a well-balanced manner by changing the opening area of the air intake port according to the acceleration of the reciprocating motion of the suction tool. it can.

Control block diagram of the electric vacuum cleaner according to the first embodiment of the present invention Schematic of the vacuum cleaner The flowchart explaining the operation of the vacuum cleaner of the same vacuum cleaner The graph showing the judgment table of the opening area of the air intake of the vacuum cleaner The block diagram of the vacuum cleaner in the 2nd Embodiment of this invention The flowchart showing the operation of the vacuum cleaner

  1st invention is provided in the upper surface and / or side surface of the electric blower which generate | occur | produces a suction wind, the suction tool provided with the floor surface suction inlet which attracts | sucks the dust of a floor surface by the suction wind of this electric blower, and this suction tool An air intake for sucking airborne dust in the air, an opening area setting means for changing the opening area of the air intake, and an acceleration detection means for detecting the acceleration of the reciprocating operation of the suction tool, When the acceleration of the reciprocating motion detected by the acceleration detecting means is greater than or equal to a predetermined threshold, the opening area setting means is swung up by the reciprocating motion of the suction tool by increasing the opening area of the air intake port. When the dust increases, the opening area of the air intake port is increased, and both the floating dust and the dust on the floor surface can be sucked efficiently.

  In addition to the first invention, the second invention includes a plurality of thresholds for acceleration detection means, and increases the opening area of the air intake port according to the acceleration detected by the acceleration detection means. Since the amount of dust that rises in proportion to the acceleration of the reciprocating motion increases, by increasing the opening area of the air intake in accordance with the increase in acceleration, it becomes an opening area corresponding to the increase of floating dust, It is possible to cope with an increase in floating dust.

  In the third aspect of the invention, the air intake port of the first or second aspect of the invention is maintained for a predetermined time in a state where the opening area is large. Generally, dust that has risen in the air is kept in the air for a long time. Since dust stays in the reciprocating motion of the suction tool, it stays in the air intake opening area for a while, so that dust stays in more air. Can be aspirated.

  According to a fourth aspect of the present invention, the air intake port having an increased opening area according to the third aspect of the present invention is returned in stages according to the passage of time, and the dust that has risen in the air as time passes on the floor surface. Since it sinks, it is possible to efficiently suck both the floating dust and the dust on the floor surface by returning the opening area of the air intake port as time passes.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the present embodiment.

(Embodiment 1)
FIG. 1 is a block diagram of the electric vacuum cleaner according to the first embodiment of the present invention, FIG. 2 is a schematic diagram of the electric vacuum cleaner, FIG. 3 is a flowchart showing the operation of the electric vacuum cleaner, and FIG. It is a graph showing the judgment table of the opening area of an entrance.

  1 and 2, the electric blower 1 generates a suction force for sucking dust. The dust collecting means 10 is provided on the intake side of the electric blower 1 and collects dust by allowing only the intake air out of the dust sucked by the electric blower 1 and the intake air. The hose 11 relays dust to the dust collecting means 10 and connects the electric vacuum cleaner main body 8 and the input setting means 4. An extension tube 6 is connected to the input setting means 4, and a suction tool 7 is connected to the extension tube 6. The input setting unit 4 selects an operation mode in which the user operates the electric blower 1, a stop mode in which the electric blower 1 is stopped, and the like, and transmits a signal to the control unit 3.

  The suction tool 7 is provided with a floor suction port 14 for sucking floor dust and an air intake 12 for sucking floating dust in the air, and a shutter 17 for changing the opening area of the air intake 12. Is attached. The shutter 17 is operated by the opening area setting means 13.

  Further, the suction tool 7 is provided with an acceleration sensor 16 for detecting the reciprocating motion of the suction tool 7, and in the present embodiment, it is constituted by a piezoelectric acceleration sensor.

  The control means 3 operates the electric blower driving means 15 according to the signal from the input setting means 4 to vary the input of the electric blower 1. The acceleration sensor 16 transmits a three-stage signal to the control means 3 in accordance with the reciprocating operation of the suction tool 7. The opening direction area means 13 operates the shutter 17 in response to a signal from the control means 3.

  About the vacuum cleaner comprised as mentioned above, the operation | movement and an effect | action are demonstrated below using FIG. 3, FIG.

  The user operates the input setting means 4 to start operation of the vacuum cleaner (step 1). The control means 3 receiving the signal from the input setting means 4 transmits a drive signal to the electric blower drive means 15 to operate the electric blower 1 to generate suction air, and the opening area of the air intake 12 is 25%. Then, an operation signal is sent to the opening area setting means 13 to operate the shutter 17 (step 2). Due to the generated suction air, dust on the floor surface is sucked from the floor surface inlet 14 of the suction tool 7, and airborne dust is sucked from the air intake port 12.

  When the suction tool 7 is moved by the user's operation, most of the dust on the floor surface is sucked from the floor surface suction port 14, but a part of the dust is caused by the impact caused by the contact between the suction tool 7 and the floor surface or the wind pressure. You will be raised in the air.

  For example, it is assumed that the determination value of the reciprocating motion of the suction tool 7 detected by the acceleration sensor 16 is “level 2”. The control means 3 compares the output signal of the acceleration sensor 16 with a threshold value for reciprocation set in advance (level 2 in the present embodiment) (step 3).

  When the output signal of the acceleration sensor 16 is level 2 or higher, the control means 3 sends an operation signal to the opening area setting means 13 so as to operate the shutter 17 so that the opening area ratio of the air intake 12 becomes 50%. (Step 4).

  As described above, in the present embodiment, the dust suction force on the floor surface is increased by increasing the opening area of the air intake port 12 when the dust raised by the reciprocating motion of the suction tool 7 increases. Since the floating dust can be sucked without damaging, both the dust on the floor and the floating dust can be sucked efficiently.

  Further, the control means 3 uses the graph as shown in FIG. 4 to change the opening area of the air intake port 12 in accordance with the determination value of the reciprocating motion of the suction tool 7, thereby being proportional to the reciprocating motion degree of the suction tool 7. Therefore, the opening area corresponding to the increase of the floating dust can be obtained, and both the dust on the floor surface and the floating dust can be sucked more efficiently.

(Embodiment 2)
FIG. 5 is a block diagram of the electric vacuum cleaner according to the second embodiment of the present invention, and FIG. 6 is a flowchart showing the operation of the electric vacuum cleaner. Note that the same portions as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  In FIG. 5, the timer 18 starts counting time according to the operation signal from the control means 3, and in the present embodiment, when 1 minute has elapsed, a signal is transmitted to the control means 3.

  About the vacuum cleaner comprised as mentioned above, the operation | movement and an effect | action are demonstrated hereafter using FIG.

  As in FIG. 6 (step 4) of the first embodiment, the control means 3 sends an operation signal to the opening area setting means 13 so that the opening area ratio of the air intake 12 becomes 50%, and the shutter 17 is moved. Suppose that it is operating. At this time, the control means 3 sends a drive signal to the timer 18, and the timer 18 starts counting time (step 5).

  When the time counted by the timer 18 is 1 minute or longer, the timer 18 sends a signal to the control means 3 (step 6). Receiving this signal, the control means 3 sends an operation signal to the opening area setting means 13 so that the opening area ratio of the air intake port 12 is 25%, and operates the shutter 17 (step 7).

  As described above, in the present embodiment, after the dust is wound up by the reciprocating operation of the suction tool 7, the state in which the opening area of the air intake 12 is increased for a while is increased. The dust staying in the air can be sucked.

  Alternatively, dust that has risen in the air as time passes settles down on the floor surface, so that by returning the opening area of the air intake 12 as time passes, both floating dust and dust on the floor surface are removed. Efficient suction is possible.

  As described above, the vacuum cleaner according to the present invention is effective not only for floor surfaces but also for vacuum cleaners that collect floating dust in the air. Application deployment to built-in type vacuum cleaners is also useful.

DESCRIPTION OF SYMBOLS 1 Electric blower 7 Suction tool 12 Air intake 13 Opening area setting means 14 Floor surface inlet 19 Acceleration detection means

Claims (4)

An electric blower that generates suction air, a suction tool having a floor surface suction port that sucks dust on the floor surface by the suction air of the electric blower, and an upper surface and a side surface of the suction tool. An air intake for sucking airborne dust; an opening area setting means for changing an opening area of the air intake; and an acceleration detection means for detecting an acceleration of a reciprocating operation of the suction tool. A vacuum cleaner that increases the opening area of the air intake when the acceleration of the reciprocating motion detected by the acceleration detecting means is equal to or greater than a predetermined threshold. The electric vacuum cleaner according to claim 1, wherein a plurality of threshold values of the acceleration detection means are provided, and the opening area of the air intake port is increased according to the acceleration detected by the acceleration detection means. The vacuum cleaner according to claim 1 or 2, wherein the air intake port is maintained for a predetermined time in a state where the opening area is increased. The vacuum cleaner of Claim 3 which returns the opening area of an air intake in steps according to progress of time.