JP2010022745A - 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 suction tool 8 including a floor surface suction port 11 for sucking dust on a floor surface by the suction air of a motor-driven blower 2; 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; and a sensor 5 for detecting the amount and size of the dust sucked from the floor surface. Wherein, the opening area of the air intake 12 is changed according to the amount and size of the dust detected by the sensor 5. For instance, when the opening area of the air intake 12 is widened when the sensor 5 detects fine dust to be easily stirred up, the stirred-up floating dust is efficiently sucked and the dust is prevented from floating to the height of the nose and mouth of a user. When the opening area of the air intake 12 is reduced when the sensor 5 detects the relatively large floating dust near the floor surface, the suction force of the floor surface suction port 11 is increased, the floating dust near the floor surface is surely sucked and cleaning is comfortably performed 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 a large number of minute holes are provided on the upper surface of the suction tool and airborne dust is sucked from the minute holes (for example, see Patent Document 1).
Japanese Patent No. 2817004

  However, according to the configuration of the conventional vacuum cleaner described in Patent Document 1, the micropores on the upper surface of the suction tool are always open with the same opening area and the same opening direction. It is suitable for the suction of airborne dust, but the amount of dust that rises depends on the amount and size of the dust on the floor, and it can respond to changes in the height at which airborne dust reaches due to the change in the way it rises. There was a problem of not.

  The present invention solves the above-mentioned conventional problems, detects the amount and size of dust sucked from the floor surface, estimates the rising height of floating dust rising during cleaning, and accurately floats in the air. It aims at providing the vacuum cleaner which can remove dust.

  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, an air intake port that is provided in the suction tool and sucks floating dust in the air by suction air of the electric blower, and dust detection that detects the amount and size of dust sucked from the floor surface Means for changing the opening area of the air intake according to the amount and size of the dust detected by the dust detection means. For example, the dust detected by the dust detection means rises to a high place. In the case of fine dust, if the opening area of the air intake is widened, the floating dust raised during cleaning can be sucked efficiently, and the dust will drift to the top of the room, especially to the height around the user's nose. If the dust detected by the dust detection means is relatively large and is floating near the floor, the suction force at the floor suction can be reduced by reducing the area of the air intake. As a result, the dust floating near the floor surface is reliably sucked, and the user can comfortably clean in a dust-free space.

  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 port for sucking floating dust in the air by the suction air of the electric blower, and dust detection means for detecting the amount and size of the dust sucked from the floor surface, and the dust detection means detects The opening area of the air intake port is changed according to the amount and size of dust. For example, when the dust detected by the dust detection means is a fine dust that tends to rise to a high place, the opening of the air intake port If the area is widened, the floating dust raised during cleaning can be efficiently sucked in, and the dust can be prevented from drifting to the height above the room, particularly to the height around the user's nostril. But If the known dust is relatively large and is floating near the floor, reducing the area of the air intake increases the suction force at the floor suction, and the dust floating near the floor It is reliably sucked and the user can comfortably clean in a space with little dust.

  In the second invention, in particular, the larger the amount of dust detected by the dust detecting means of the first invention, the wider the opening area of the air intake port, and the higher the dust that has soared, the more the dust is sucked up. In a situation where the height of the air intake is higher, the air intake opening area can be increased to prevent floating dust from reaching the user's nose.

  In the third invention, in particular, the more dust that is likely to rise in the air detected by the dust detection means of the first or second invention, the wider the opening area of the air intake port, and the higher the floating dust that has risen higher. By sucking floating dust that soars higher, it is possible to prevent the dust from reaching the user's nostril by expanding the opening area of the air intake port in situations where dust is likely to soar higher. it can.

  The fourth aspect of the invention is such that the stronger the suction force of the electric blower of any one of the first to third aspects, the wider the opening area of the air intake, and the wind speed of the exhaust gas related to the rising of dust is also increased. By taking this into consideration, the floating dust raised during cleaning can be sucked with higher accuracy.

  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, and FIG.1 (b), (c), (d) is an enlarged view of the suction tool of the vacuum cleaner.

  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 blown by the electric blower 2 is transmitted to the suction tool 8 having the floor suction port 11 through the hose 4 and the extension pipe 7, and the floor dust is sucked from the floor suction inlet 11 by this suction wind.

  Reference numeral 10 denotes a rotating brush which is driven to rotate by an electric motor or a suction airflow (not shown). The rotating brush 10 is arranged in the vicinity of the floor suction port 11. When the rotating brush 10 rotates, dust on the floor surface is scraped and the floor suction port is rotated. The suction of dust from 11 is assisted.

  The suction tool 8 includes an air intake 12 for sucking floating dust by the suction air from the electric blower 2, and an electric flap 9 for changing the opening area of the air intake 12. The electric flap 9 has an opening area setting. Depending on the opening area set by the means (not shown), the closed state as shown in FIG. 1 (b) is changed to the open state as shown in (c) and (d). The opening area of the air intake 12 is changed so that dust is sucked. The hose 4 includes a sensor 5 as dust detection means for detecting the amount and size of the sucked dust, 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. When the is operated, the input to the electric blower 2 is switched to 200 W, so that 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). Mode).

  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 driving in the strong, medium, or weak mode, when the electric flap 9 and the rotating brush 10 are driven by the electric motor, electric power is supplied to the electric motor, and the rotating brush 10 The electric flap 9 sweeps out dust, and the opening area of the air intake port 12 is changed as shown in FIGS. 1B, 1C, and 1D in order to suck the floating dust in the air.

  The sensor 5 detects the dust sucked by the suction air of the electric blower 2, and determines the dust floating level using the determination table of FIG. 3 based on the detected number of each dust size. In general, the more dust on the floor, and the smaller the dust, the easier it is for dust to rise when it is cleaned and to float in the air. For example, pollen has a size of about 30 μm and does not float in the air for a long time, but it is released when it ruptures, and is a size of an allergen-containing substance that causes hay fever symptoms. Is about 0.5 μm and continues to float in the air. In general, it is said that dust of 1 μm or less continues to drift in the air, and dust larger than that drifts up, but tends to settle down, and thus the floating level of dust is determined using its properties.

  In the present embodiment, X = (the number of detected dust of 1 μm or less for 2 seconds) + (detection of dust larger than 1 μm for 2 seconds) with respect to the number of detected dusts per unit time (2 seconds). The calculation formula weighted according to the size such as (number) × 0.2 is used to determine that the greater the X, the greater the amount of dust and the more likely it is to rise.

  Using the determined dust floating level, the opening area of the air intake 12 that is opened and closed by the electric flap 9 is determined by the opening area setting table shown in FIG. The opening area setting table sets the opening area of the air intake 12 corresponding to the dust floating level. When there is a large amount of dust that is likely to rise, the opening area of the air intake 12 is further expanded to increase the amount of air. While sucking up the dust, the dust that soars high is sucked to prevent the dust from rising up to the upper part of the room, particularly to the user's nostril. On the contrary, if the dust is small or large, the electric flap 9 is used. The air intake 12 is operated in a direction in which the opening area is reduced, and suction of relatively large dust floating in a low place is increased, and the suction force on the floor surface suction port 11 side is increased accordingly, Improve dust collection efficiency.

  In addition, the setting table of the opening area also takes into account the soaring of dust due to the exhaust wind speed. The stronger the suction force of the electric blower 2, the greater the exhaust air volume and wind speed from the cleaner body 1, and the more the dust soars. Therefore, the opening area 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 increasing the opening area as the suction force is stronger. . In addition, if the opening area of the air intake port 12 is increased, the suction force from the floor surface suction port 11 becomes relatively low, but the cleaning condition at that time is sufficient even if the floor surface has little dust and the suction force is small. This is a situation where dust can be sucked in, and the dust collecting performance from the floor surface is not affected, and airborne dust can be sucked in the air.

  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.

  As described above, the vacuum cleaner according to the present invention estimates the rising height of the floating dust rising during cleaning from the amount and size of the dust sucked from the floor surface, and accurately removes the floating dust in the air. It can be applied to various vacuum cleaners for home use and business use.

(A) Whole view of vacuum cleaner in 1st Embodiment of this invention, (b)-(d) The enlarged view of the suction tool of the vacuum cleaner Enlarged view of the top surface of the handle of the vacuum cleaner Judgment explanatory diagram of the floating level of the vacuum cleaner Setting explanation of opening area of electric flap of the vacuum cleaner

Explanation of symbols

1 Vacuum Cleaner Body 2 Electric Blower 3 Paper Pack 4 Hose 5 Sensor (Dust Detection Means)
6 Hand handle 7 Extension pipe 8 Suction tool 9 Electric flap 10 Rotating brush 11 Floor inlet 12 Air intake 61 Strong switch 62 Middle switch 63 Weak switch 64 Stop switch

Claims (4)

An electric blower that generates suction air; a suction tool 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 is provided in the suction tool. An air intake port for sucking airborne dust in the air by suction air and a dust detection means for detecting the amount and size of the dust sucked from the floor, and the amount and size of the dust detected by the dust detection means The vacuum cleaner which changes the opening area of the said air intake according to. The vacuum cleaner according to claim 1, wherein the larger the amount of dust detected by the dust detection means, the larger the opening area of the air intake port, and the higher the dust that has risen, is sucked. The vacuum cleaner according to claim 1 or 2, wherein the more the fine dust that is likely to rise in the air detected by the dust detection means, the larger the opening area of the air intake port, and the higher the dust that has risen is sucked. The electric vacuum cleaner according to any one of claims 1 to 3, wherein the opening area of the air intake port is further expanded as the suction force of the electric blower is stronger.

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