JP2010022742A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner capable of highly accurately removing floating dust in the air. <P>SOLUTION: The vacuum cleaner includes: a motor-driven blower 2 for generating suction air; a suction tool 8 communicating with the motor-driven blower 2 and including a floor surface suction port 11 for sucking dust on a floor surface by the suction air; and an air intake 12 provided on the suction tool 8 for sucking the floating dust in the air by the suction air of the motor-driven blower 2. Wherein, the direction of the air intake 12 is changed corresponding to the kind of the floor surface. For instance, the direction of the air intake 12 is directed upwards when the floor surface is a smooth wooden or tiled floor and the dust is easily stirred up to the upper part of a room, especially to the height of the nose and mouth of a user, and the direction of the air intake 12 is directed to a horizontal direction when the floor surface is a carpet or the like and there is a lot of fibrous dust near the floor surface. Thus, the floating dust is sucked in a wide range and the user can comfortably perform cleaning in a space with little dust. <P>COPYRIGHT: (C)2010,JPO&INPIT

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 many fine holes are provided on the upper surface of the suction tool so that airborne dust in the air can also be sucked (for example, see Patent Document 1).
Japanese Patent No. 2817004

  However, according to the configuration of the electric vacuum cleaner described in Patent Document 1, the fine holes on the upper surface of the suction tool are always opened with the same opening area and the same opening direction. Although it is suitable for sucking dust, there is a problem that the type of dust that rises depends on the type of floor surface, and the way that it rises changes, so it cannot cope with the change in height that floating dust reaches. .

  The present invention solves the above-mentioned conventional problems, and it is possible to estimate the rising height of floating dust rising during cleaning from the type of the floor surface, and to accurately remove the floating dust in the air. Is to provide.

  In order to solve the above-described conventional problems, an electric vacuum cleaner of the present invention includes an electric blower that generates suction air and a floor suction port that communicates with the electric blower and sucks dust on the floor by the suction air. A suction tool provided, and an air intake port that is provided in the suction tool and sucks floating dust in the air by the suction air of the electric blower, and the direction of the air intake port depends on the type of the floor surface. For example, if the floor is smooth, such as flooring or tiles, and dust is likely to rise above the room, especially to the height around the user's nostrils, the air If there is a lot of fibrous dust near the floor, such as a carpet, the air intake can be sucked in a wide area by setting the air intake to a substantially horizontal direction, and the user has a small dust space. It is possible to carry out a comfortable cleaning.

  The electric vacuum cleaner of the present invention can efficiently suck floating dust such as pollen and house dust that is raised during cleaning, and the user can clean comfortably in a space with little dust.

  1st invention is provided in the said suction tool with the electric blower which generate | occur | produces a suction wind, the suction tool which communicated with the said electric blower, and was equipped with the floor surface suction inlet which attracts | sucks the dust of a floor surface with the suction air. And an air intake that sucks airborne dust in the air by the suction air of the electric blower, and changes the direction of the air intake according to the type of the floor surface. When the dust is soaring up to the top of the room, especially the height around the user's nose, such as tiles, the air intake is facing upward, the floor is carpet, and fibrous dust is near the floor. When the air intake port is in a substantially horizontal direction, airborne dust can be sucked in a wide range, and the user can clean comfortably in a dust-free space.

  In the second aspect of the invention, in particular, the direction of the air intake port of the first aspect of the invention is closer to the vertical direction than when the floor surface is a smooth, substantially flat surface such as flooring or tiles. This is designed to suck up suspended dust at a higher position, and prevents dust from reaching the user's nostrils when cleaning a substantially flat floor surface where dust such as flooring tends to rise higher. be able to.

  The third invention is particularly provided with load detection means for detecting a load of operability on the floor surface when the suction tool is moved to the suction tool of the first or second invention, and the output of the load detection means. Accordingly, the type of the floor surface is discriminated, and the type of the floor surface that is actually cleaned can be detected directly and reliably, and the type of the floor surface can be discriminated with high accuracy.

  In particular, the fourth invention includes a sensor for determining a change in the amount of dust sucked from the floor surface of the first or second invention per unit time, and determines the type of the floor surface according to the output of the sensor. Thus, the type of the floor surface can be discriminated without contact, and the type of the floor surface can be discriminated without deterioration in accuracy even after long-term use.

  In the fifth aspect of the invention, in particular, the stronger the suction force of the electric blower of any one of the first to fourth aspects is, the more the direction of the air intake port is set to the vertical direction. As the air pressure increases, naturally the speed of the exhaust air exhausted from the main body of the vacuum cleaner increases, so the dust rises and the height rises.By taking this into consideration, the floating dust raised during the cleaning can be sucked in more accurately. can do.

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

(Embodiment 1)
The vacuum cleaner in the 1st Embodiment of this invention is demonstrated using FIGS.

  Fig.1 (a) is a general view of the vacuum cleaner in this Embodiment, FIG.1 (b), (c), (d) is an expanded sectional view of the suction tool 8 of Fig.1 (a).

  In FIG. 1, 1 is a vacuum cleaner body, 2 is an electric blower built in the vacuum cleaner body 1, and 3 is a paper pack that collects dust sucked by the suction air of the electric blower 2. is there. The suction air of the electric blower 2 is transmitted through the hose 4 and the extension pipe 7 to the suction tool 8 provided with the floor surface suction port 11, and the dust on the floor surface is sucked from the floor surface suction port 11 by this suction air. Reference numeral 10 denotes a rotating brush that is driven to rotate by an electric motor or a suction airflow (not shown), and is arranged in the vicinity of the floor surface suction port 11. By rotating it, dust on the floor surface is scraped out, and the floor surface suction is performed. The suction of dust from the mouth 11 is assisted.

  In addition, the suction tool 8 has an air inlet 12 at an end portion thereof, and includes an electric louver 9 that rotates from substantially horizontal to a substantially vertical direction. The electric louver 9 is an opening direction setting means (not shown). Depending on the set angle, it moves from the horizontal direction as shown in FIG. 1 (b) to the vertical direction as shown in FIGS. 1 (c) and 1 (d) so as to suck the floating dust at a higher position. The opening direction of the air intake 12 is changed.

  The hose 4 includes a sensor 5 for detecting the sucked dust and determining the type of the floor surface, and a hand handle 6 for the user to hold.

  FIG. 2 is an enlarged view of the upper surface of the hand handle 6 and includes a strong switch 61, a middle switch 62, a weak switch 63, and a stop switch 64 for stopping the cleaner, which are operated when the cleaner is operated.

  Next, operation | movement and an effect | action of the vacuum cleaner in this Embodiment comprised as mentioned above are demonstrated, referring FIGS.

  When the user performs cleaning, one of the strong switch 61, the middle switch 62, and the weak switch 63 is operated. When the strong switch 61 is operated, the control means (not shown) sets the input to the electric blower 2 to 900 W, and when the middle switch 62 is operated, the input to the electric blower 2 is set to 600 W, and the weak switch 63 is turned on. When operated, the input to the electric blower 2 is switched to 200 W, and the user can select the strength of the suction force (hereinafter, the respective operation modes are set to the strong mode, the medium mode, and the weak mode). To do).

  When the stop switch 64 is operated, the input to the electric blower 2 is cut off and the operation is stopped (hereinafter referred to as a stop mode). When operating in the strong, medium, or weak mode, electric power is supplied to the electric motor that drives the rotating brush 10 and the electric louver 9, and the rotating brush 10 sweeps out dust on the floor surface. In order to suck airborne dust in the air, the opening direction of the air intake port 12 is changed as shown in FIGS. 1B, 1C, and 1D.

  A floor surface discriminating means (not shown) discriminates the floor surface using a discrimination table corresponding to the output of the sensor 5 shown in FIG. For example, if the number of detections of dust every 0.5 seconds in the present embodiment is four times, for example, if all four times are 10 or more, the floor surface is a carpet with long hairs, and if it is 5 or more, hairs are short. Carpet, otherwise it is identified as flooring. For example, if the number of detected dust for 0.5 seconds is 10, 20, 12, or 15, it is determined that the carpet has a long bristle, but if it is 10, 20, 12, or 3, it is determined that the flooring is used. This utilizes the fact that when the carpet is being cleaned, the loose hair is always sucked, so that the number of detected dust is always greater than or equal to a certain value.

  The rotation angle of the electric louver 9 from the horizontal position is determined from an angle setting table having a predetermined rotation angle according to the type of floor surface and the operation mode determined by the floor surface determination unit shown in FIG. . In general, on a substantially flat floor such as flooring, relatively light dust containing pollen and house dust is likely to rise due to human movement, but conversely, carpet holds dust with its own fibers, so compare Heavily fibrous dust is generated, but light dust is said to be difficult to fly.

  The angle setting table sets the rotation angle of the electric louver 9 corresponding to the type of the floor surface in consideration of the nature, and in the flooring or tile, the direction of the air intake 12 is directed to the vertical direction, The dust that soars higher is sucked up to prevent the dust from soaring up the room, especially to the user's nostrils. Conversely, in the case of a carpet, the electric louver 9 is set to a substantially horizontal direction and floats at a low place It mainly sucks fibrous dust. In addition, this angle setting table also considers the dust drift due to the exhaust wind speed. The higher the suction force, the greater the exhaust air volume and wind speed from the vacuum cleaner body 1, and the more easily the dust rises. By setting the angle to the vertical direction as the mode is stronger, the opening direction of the air intake port 12 can be set with higher accuracy in consideration of the wind speed of the exhaust gas related to the rising of dust.

  By performing the control as described above, floating dust such as pollen and house dust that is raised during cleaning can be efficiently sucked, and the user can clean comfortably in a space with little dust.

  In this embodiment, the type of the floor surface is determined using the sensor 5, but the load when the suction tool 8 is moved differs between the carpet and the flooring. Can also be determined. For example, when the rotary brush 10 used in the present embodiment is driven by an electric motor, the load applied to the rotary brush 10 increases in a carpet or the like, and the load current of the electric motor increases. It is also possible to determine the type of the floor surface by using a difference in load current detected by the load detection means, and in this case, the accuracy of accuracy is increased because the floor surface is directly touched. It is good and it is not necessary to provide a separate sensor, and the floor surface can be discriminated at low cost.

  As described above, the vacuum cleaner according to the present invention can estimate the rising height of floating dust rising during cleaning from the type of floor surface, and can accurately remove floating dust in the air. It can be applied to various electric vacuum cleaners for business use.

(A) Schematic of the vacuum cleaner in the first embodiment of the present invention, (b) to (d) Enlarged sectional view of the suction tool of the vacuum cleaner Enlarged view of the top surface of the handle of the vacuum cleaner Floor surface discrimination explanatory diagram of the floor surface discrimination means of the same vacuum cleaner Angle setting explanatory diagram of the electric louver of the same vacuum cleaner

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner body 2 Electric blower 3 Paper pack 4 Hose 5 Sensor 6 Hand handle 7 Extension pipe 8 Suction tool 9 Electric louver 10 Rotating brush 11 Floor surface inlet 12 Air intake 61 Strong switch 62 Medium switch 63 Weak switch 64 Stop switch

Claims (5)

An electric blower that generates suction air, a suction device that communicates with the electric blower and has a floor surface suction port that sucks dust on the floor surface by the suction air, and a suction device that is provided in the suction device and sucked by the electric blower An electric vacuum cleaner comprising an air intake for sucking airborne dust in the air by wind and changing the direction of the air intake according to the type of the floor surface. When the floor is a smooth, flat surface such as flooring or tiles, the air intake port is closer to the vertical direction than the other floors, and sucks suspended dust at higher positions. The electric vacuum cleaner according to claim 1. The suction device includes load detection means for detecting a load of operability on the floor surface when the suction tool is moved, and the type of the floor surface is determined according to the output of the load detection means. Or the vacuum cleaner of 2. The vacuum cleaner according to claim 1 or 2, further comprising a sensor that determines a change in the amount of dust sucked from the floor per unit time, and that determines the type of the floor according to the output of the sensor. The vacuum cleaner according to any one of claims 1 to 4, wherein the air suction port is oriented more vertically as the suction force of the electric blower is stronger.

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