JP2010046373A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To achieve control for preventing dust floating in the air from drifting to the upper part of a room, especially to the height near the nose and mouth of a user, during cleaning. <P>SOLUTION: The vacuum cleaner includes: a suction tool 8 for sucking the dust on a floor surface by the suction air of a motor-driven blower; an air intake 12 provided on the top surface of the suction tool 8, for sucking floating dust in the air by the suction air of the motor-driven blower; a motor-driven flap (air intake opening/closing means) 9 for changing the opening area of the air intake 12; and charging detection means 5a for detecting the charging amount of the floor surface. The motor-driven flap 9 changes the opening area of the air intake 12 according to the charging amount of the floor surface detected by the charging detection means 5a. The floating dust stirred up during cleaning is efficiently sucked, and the dust is prevented from drifting to the height near the nose and mouth of a user. <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 that has a structure in which a large number of minute holes are provided on the upper surface of a suction tool to suck airborne dust in the air (for example, see Patent Document 1).
Japanese Patent No. 2817004

  However, according to the method described in Patent Document 1, since the micropores on the upper surface of the suction tool always remain open with the same opening area and opening direction, it is suitable for suction of floating dust in a specific region. The degree to which the dust rises differs depending on the amount of charge on the floor surface, and it has not been possible to cope with the change in the height at which the floating dust reaches due to the change in the manner of the rise.

  The present invention solves the above-mentioned conventional problems, and by detecting the amount of charge on the floor surface, it is possible to estimate the rising height of floating dust that rises during cleaning, and to accurately remove floating dust in the air. We propose a vacuum cleaner that can be used.

  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 that communicates with the suction path of the electric blower and sucks dust on the floor surface by the suction air. A suction tool provided with a mouth, an air intake port provided on the top surface of the suction tool, for sucking airborne dust in the air by suction air of the electric blower, and a charge detection means for detecting the amount of charge on the floor surface The opening area of the air intake port is changed in accordance with the amount of charge on the floor surface detected by the charge detection means.

  In general, the more charged the floor surface, the more the dust is attracted to the floor surface due to its Coulomb force, and the more difficult it is to float and float in the air. In the present invention, the approximate height at which dust floats in the air is estimated based on the amount of charge on the floor surface, and the optimum air intake opening area is set to the floating height. Elevated dust can be sucked up efficiently, dust can be prevented from drifting to the top of the room, especially to the height around the user's nose, and the user can clean comfortably in a dust-free space it can.

  The electric vacuum cleaner of the present invention provides an electric vacuum cleaner that can efficiently suck floating dust such as pollen and house dust that can be swept up during cleaning, and can be cleaned comfortably in a dust-free space. To do.

  The first invention includes an electric blower that generates suction air, a suction tool that communicates with a suction path of the electric blower, and that has a floor suction port that sucks dust on the floor surface by the suction air, and the suction tool. Provided with an air intake port for sucking floating dust in the air by the suction air of the electric blower, and a charge detection means for detecting the amount of charge on the floor surface, the opening area of the air intake port being The charge detecting means is configured to change according to the amount of charge on the floor surface, and can efficiently suck the floating dust that has been lifted up during cleaning, and particularly above the room, especially the user's nostrils Dust can be prevented from drifting to the surrounding height, and the user can clean comfortably in a space with little dust.

  In addition to the first invention, the second invention includes control means for changing the suction force of the electric blower, and the air intake opening / closing means includes not only the charge amount of the floor surface detected by the charge detection means but also the floor surface. According to both the surface charge amount and the suction force set by the control means, the opening area of the air intake port is changed. The control means as well as the detected charge amount of the floor surface By taking into account the dust drift that accompanies the wind speed of the exhaust based on the magnitude of the suction force set by the airflow, it is possible to efficiently suck the floating dust that has been lifted during cleaning, and above the room, especially the user's nostrils Dust can be prevented from drifting to the surrounding height, and the user can clean comfortably in a space with little dust.

  According to a third aspect of the invention, the opening area of the air intake port of the first or second aspect of the invention becomes narrower as the charge amount detected by the charge detection means is smaller or as the suction force set by the control means is larger. This increases the flow rate of the air passing through the air intake and sucks up suspended dust at higher positions.In situations where dust is likely to rise higher, the air intake opening area is reduced. It can prevent floating dust from reaching the user's nostrils.

  In addition to the third invention, the fourth invention prepares in advance a table relating to the opening area of the air intake port, which is determined using the charge amount of the floor surface and the suction force set by the control means as parameters. Based on a table, the air intake opening area is changed. The air intake opening area can be quickly selected and determined based on a pre-prepared table, which efficiently sucks floating dust. be able to.

(Embodiment 1)
The vacuum cleaner in the 1st Embodiment of this invention is demonstrated using FIGS. 1-3.

  FIG. 1 is an overall view of the vacuum cleaner, and FIGS. 2A and 2B are enlarged views of the suction tool 8 of FIG. Reference numeral 1 denotes a vacuum cleaner body, 2 denotes an electric blower built in the vacuum cleaner body 1, and 3 denotes a paper pack that collects dust sucked by the suction air of the electric blower 2. The suction air from 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 dust on the floor surface is sucked from the floor suction port 11 by this suction air. The electric motor 10 is disposed in the vicinity of the floor suction port 11 and rotates when electric power is supplied to assist the suction of dust from the floor suction port 11 by sweeping out dust on the floor surface.

  The suction tool 8 includes an air intake 12 and an electric flap (air intake opening / closing means) 9 provided on the surface of the air intake 12 to change the opening area of the air intake 12. The electric flap 9 is shown in FIG. 2B from the state in which the opening area of the air intake 12 is increased as shown in FIG. 2A in accordance with the opening area set by the opening direction setting means (not shown). The opening area of the air intake 12 is changed so as to suck the floating dust at a higher position. The electrification detection means 5a is installed in the lower part of the suction tool 8, and becomes a structure which detects the charge amount of a floor surface accurately by approaching a floor surface. The hose 4 is provided with a hand handle 6 for the user to hold.

  FIG. 3 is an enlarged view of the top surface of the hand handle 6, and is provided with 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. 1-3.

  When the user performs cleaning, one of the strong switch 61, the middle switch 62, and the weak switch 63 is operated. Control means (not shown) operates the weak switch 63 when the strong switch 61 is operated, the input to the electric blower 2 is 900 W, when the middle switch 62 is operated, the input to the electric blower 2 is 600 W When the operation is performed, the input to the electric blower 2 is set to 200 W and the user sets the suction force to operate (hereinafter, the respective operation modes are set to the strong mode, the medium mode, and the weak 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 operating in the strong, medium, or weak mode, electric power is supplied to the electric motor 10 and the electric flap 9, and the electric motor 10 draws out dust on the floor surface, and the electric flap 9 sucks floating dust in the air. Therefore, the opening area of the air intake 12 is changed as shown in FIGS. 2 (a) and 2 (b).

  The opening area of the electric flap 9 is determined by a table of opening areas corresponding to the amount of charge on the floor surface detected by the charging detection means shown in Table 1 below.

  In general, the more charged the floor surface, the more the dust is attracted to the floor surface due to its Coulomb force, and the more difficult it is to float and float in the air. On the other hand, when the floor is not charged, light dust easily rises due to human movement and continues 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. In the table of the opening area, the opening area of the electric flap 9 corresponding to the charging amount (absolute value) of the floor surface is set in consideration of the property, and the charging amount of the floor surface is large and attracts dust. In this case, the electric flap 9 is operated in the direction of widening the opening area of the air intake port 12 to suck dust floating at a low place and increase the suction force on the floor surface suction port 11 side to the floor surface. If the adsorbed dust is sucked and the charge amount on the floor is small, the opening area of the air intake 12 is narrowed, the flow velocity of the air passing through the air intake 12 is increased, and the soaring dust is sucked up. Thus, dust is prevented from rising above the room, particularly to the user's nostril. The opening area setting table also takes into account the soaring of dust 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 soars. As the force is higher (larger), the opening area is narrower, so that 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. In addition, when sucking up dust that has risen higher through the air intake port 12, the suction force from the floor surface suction port 11 is relatively low, but at that time, the force that the dust adsorbs to the floor surface is also weak. The floor surface can sufficiently suck dust even if the suction force is low, and the dust collection performance from the floor surface can suck airborne dust in the air without any problem.

  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 the present embodiment, the position of the charging detection means 5a is installed on the floor side of the suction tool 8. However, the charging detection means 5b is installed at a location where it does not move frequently, for example, at the lower portion of the cleaner body 1. Thus, the exhaust of the vacuum cleaner main body 1 from which the exhaust air of the electric blower 2 that is one of the factors that detect the charged amount of the floor surface with high accuracy without being greatly affected by the operation of the user and that dust rises is discharged. By installing the charging detection means 5c in the vicinity of the mouth 13, the floating dust raised during cleaning can be sucked more accurately in consideration of the wind speed of the exhaust gas related to the dust rising.

  As described above, the vacuum cleaner according to the present invention is capable of efficiently sucking airborne dust in accordance with the amount of charge on the floor, and is not only for home use but also for business use etc. It can be applied and deployed widely.

Schematic of the vacuum cleaner in Embodiment 1 of the present invention (A) Main part sectional drawing which shows the state which the electric flap of the suction tool of the vacuum cleaner in Embodiment 1 of this invention widened the opening area of the air intake opening (b) Electric drive of the suction tool of the same vacuum cleaner Cross-sectional view of the main part showing the state that the flap narrows the opening area of the air intake Top view of the hand handle of the electric vacuum cleaner according to Embodiment 1 of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner body 2 Electric blower 3 Paper pack 4 Hose 5a, 5b, 5c Charge detection means 6 Hand handle 7 Extension pipe 8 Suction tool 9 Electric flap (air intake opening / closing means)
DESCRIPTION OF SYMBOLS 10 Electric motor 11 Floor surface intake port 12 Air intake port 13 Exhaust port 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 suction path of the electric blower, and has a floor surface suction port that sucks dust on the floor surface by the suction air, and a top surface of the suction tool. An air intake port that sucks airborne dust in the air by the suction air of the electric blower, an air intake opening / closing unit that changes an opening area of the air intake port, and a charge detection unit that detects the amount of charge on the floor surface And the air intake opening / closing means changes the opening area of the air intake according to the amount of charge on the floor detected by the charge detection means. Control means for changing the suction force of the electric blower is provided, and the air intake opening / closing means includes not only the charge amount of the floor surface detected by the charge detection means but also the charge amount of the floor surface and the suction force set by the control means. The vacuum cleaner according to claim 1, wherein the opening area of the air intake port is changed in accordance with both. The air intake opening / closing means reduces the amount of air passing through the air intake by reducing the opening area of the air intake as the charge amount detected by the charge detection means is smaller or the suction force set by the control means is larger. The electric vacuum cleaner according to claim 1 or 2, wherein the flow rate is increased to suck up floating dust at a higher position. Prepare a table for the air intake opening area, which is determined using the amount of charge on the floor and the suction force set by the control means as parameters, and change the air intake opening area based on the table. The electric vacuum cleaner according to claim 3, wherein the electric vacuum cleaner is configured to be used.

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