JP3703120B2 - air purifier - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a small air cleaner used in hospitals, general homes, offices and the like.
[0002]
[Prior art]
As this kind of air purifier, there is well known an electrostatic dust collection type in which fine particles such as dust and pollen in the air are charged by corona discharge, and the charged fine particles are collected on a counter electrode. It can be a stationary type on the top of a desk or a mounting type on a wall.
[0003]
[Problems to be solved by the invention]
However, in any of the air purifiers that are stationary on the desk surface or mounted on the wall surface, the indoor air is taken in from the suction grill formed in the main body case, and the purified air is discharged from another blowing grill. However, the intake direction of the intake grille is always constant or can be changed to some extent by adjusting the angle of the louver, and there is no one that can greatly change the intake direction. Therefore, the indoor air cleaning efficiency could not be sufficiently increased.
[0004]
The object of the present invention has been made by paying attention to such points, and it is possible to change the air intake direction largely and arbitrarily according to the use object and purpose of use and to improve the purification efficiency of indoor air. It is to provide a purifier.
[0005]
[Means for Solving the Problems]
In the present invention, a corona discharge electrode 16 to which a high voltage is applied and a counter electrode 18 for collecting dust are arranged inside a main body case 1 which is formed in an elongated shape and has an intake port 4 formed on the front surface. To do. In addition, both ends in the longitudinal direction of the main body case 1 are supported so as to be rotatable around an axis P along the longitudinal direction of the case with respect to the stand 2.
[0006]
[Action]
For example, a high negative voltage (several thousand volts) is applied to the corona discharge electrode 16, and a high positive voltage (several thousand volts) is applied to the counter electrode 18. Then, corona discharge is performed from the corona discharge electrode 16 to release negative ions. The negative ions negatively ionize fine particles such as dust, pollen, and germs contained in the air that has entered the main body case 1 from the air inlet 4 on the front surface of the case. The negatively charged particles are attracted to the counter electrode 18 by the Coulomb action and collected. If a dust collection sheet 21 is provided on the front surface of the counter electrode 18, it is captured on the dust collection sheet 21. At that time, by rotating the main body case 1 around the axis P, the air intake direction can be changed largely and arbitrarily. If the dust collection sheet 21 is sterilized or an antibacterial sheet, miscellaneous bacteria such as captured harmful pathogens are inactivated or killed.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
(First embodiment)
1 to 4 show a first embodiment of an air cleaner according to the present invention. 1 is an overall perspective view of the air purifier, FIG. 2 is a transverse side view thereof, FIG. 3 is a transverse plan view thereof, and FIG. 4 is an exploded perspective view thereof. This air purifier A is basically constructed as a floor-standing type, and the longitudinally opposite ends of the main body case 1 which is formed in a slender shape as a whole are provided with left and right stands 2 and are horizontally oriented along the longitudinal direction of the case. It is supported so as to be rotatable around the center P.
[0008]
As shown in FIG. 2, the main body case 1 is formed in a semi-cylindrical shape having a front curved surface, and a rear case 3 is detachably fitted and connected to the opened back surface. A large number of vertically-slit inlets 4 are arranged in the left-right direction on the front surface of the main body case 1. The left and right side walls of the main body case 1 are supported by the upper end of the stand 2 so as to be rotatable around a lateral axis P along the longitudinal direction of the case, and the shaft support portion is appropriately tightened and connected. The main body case 1 can be frictionally held in an arbitrary rotation posture. In addition, it is comprised so that the stay 2a may be constructed over the left-right stand 2, and the left-right stand 2 may not rotate arbitrarily.
[0009]
The rear case 3 is formed in a shallow box shape, and an inner case 5 formed of an insulating material such as a synthetic resin is fitted and connected therein. An air passage 6 is formed between the rear case 3 and the inner case 5, and the air passage 6 communicates with the inside of the main body case 1 through air holes 7 formed at the left and right ends of the inner case 5, Air introduced into the main body case 1 from the opening 4 is guided to the ventilation path 6 through the ventilation hole 7. Further, a fan 9 driven by an electric motor 8 is attached to the left and right center of the rear case 3 so that air guided to the air passage 6 is discharged to the outside from the exhaust port 10 at the back. A high voltage power supply box 12 connected to an AC power supply (100 V) via a cord 11 is provided at one end in the rear case 3, and a start switch 13 and a monitor for displaying an operation state are displayed on the side of the rear case 3. A lamp 14 and the like are provided.
[0010]
A sawtooth-shaped corona discharge electrode 16 is installed on the front surface of the inner case 5 via a pair of left and right legs 15 and connected to the high voltage power supply box 12 to apply a high voltage of minus 6000 to 7000 volts. The Further, an electrode support plate 17 made of an insulating material is provided on the front surface of the inner case 5, and a counter electrode 18 formed in a flat band shape is attached to the upper and lower surfaces of the electrode support plate 17. The electrode support plate 17 is detachably engaged and connected to the inner case 5 via left and right locking claws 17a, and is connected to the high voltage power supply box 12 by wiring and is provided on the front surface of the inner case 5 19 and a terminal 20 provided on the back surface of the electrode support plate 17 are in contact with each other, and a high voltage of plus 6000 to 7000 volts is applied to each counter electrode 18.
[0011]
As shown in FIG. 5, the corona discharge electrode 16 is provided with a number of sharp protrusions 16a on both upper and lower sides, and by applying the high voltage as described above, at the tip of each sharp protrusion 16a. Local corona discharge occurs, air is ionized, and negative ions jump out at a high speed. The ejected negative ions repeatedly collide with and recombine with molecules in the air to generate an air flow. Negative ions are adsorbed by fine particles such as dust, pollen, and germs in the air, and the negatively charged fine particles are attracted toward the counter electrode 18 to which a high positive voltage is applied.
[0012]
In addition, a dust collection sheet 21 is provided on the front surface of the electrode support plate 17, and fine particles that have been sucked and moved toward the counter electrode 18 are captured by the dust collection sheet 21. As the dust collection sheet 21, a simple toilet paper, a polyethylene sheet, an aluminum sheet, a non-woven fabric, or the like is used, or a sheet provided with an adsorbent such as activated carbon or an adhesive using these as a base material is used. Alternatively, a sheet made of mortar paste having sterilizing power or antibacterial power or a sterilizing sheet made of copper sheet or fiber having sterilizing power or antibacterial power is used.
[0013]
The dust collection sheet 21, plug along the rail-like guide 17b digits set over the left-right direction on the front upper and lower electrode support plate 17, the dust collecting sheets by directing the lateral direction one end of the electrode support plate 17 below 21 can be removed by falling under its own weight along the guide 17b. Accordingly, when a large amount of dust or pollen adheres to the surface of the dust collection sheet 21 after a certain period of time, the main body case 1 and the rear case 3 are separated, and the electrode support plate 17 is removed from the inner case 5. Thus, the electrode support plate 17 can be thrown into a disposal bag or the like with one end in the left-right direction facing downward, and can be discarded without touching the dust collection sheet 21 with a human hand .
[0014]
The air purifier A of this embodiment is basically used in a floor-mounted state, but when used in a hospital, as shown in FIG. The stand 2 can also be configured. Moreover, although not shown in figure, it can also comprise in the specification which attaches the stand 2 to a wall surface, and can also comprise in a wall hanging type. In the case of wall mounting, the air intake 4 can be arbitrarily changed in a range from directly above to directly below by attaching the main body case 1 sideways. Further, when the main body case 1 is vertically mounted and used on the wall, the direction of the intake port 4 can be arbitrarily adjusted within a range of 180 degrees or more to the left and right. However, as the stand 2, both of them can be integrally formed in addition to being separately formed on the left and right as in the illustrated example.
[0015]
As described above, the air flow caused by the negative ions discharged from the corona discharge electrode 16 is noiseless and can sufficiently clean the surrounding air unless the fan 9 is installed. Since the air flow can be forcibly created by using the fan 9 installed at the left and right center, air purification can be performed more efficiently.
[0022]
In actual施例, the corona discharge electrode 16 when configured as shown in FIG. 7, it prevents the finger touches the pointed protrusions 16a when assembling or dust collection sheet change, can be safely handled. That is, FIG. 7 (a), to form a corona discharge electrode 16 wider, is formed with pointed protrusions 16a inside of the formed hole 16b punched in the width. Further, FIG. 7 (b), as well as projecting the pointed projections 16a along the sides of the corona discharge electrode 16, is formed punched integrally guard portion 16c surrounding the. Furthermore, FIG. 7 (c), to form a corona discharge electrode 16 in the linear serpentine, its reentrant portions, are projected a pointed protrusion 16a at a height which does not protrude from the electrode sides.
In the embodiment , a negative potential is applied to the corona discharge electrode 16 and a positive potential is applied to the counter electrode 18, but dust can be collected in the same manner by applying a reverse potential and releasing positive ions. The corona discharge electrode 16 may be an ionized line such as a tungsten line.
[0023]
【The invention's effect】
According to the present invention, the main body case 1 can be arbitrarily rotated and adjusted around the axis P along the longitudinal direction thereof. Therefore, efficient purification treatment can be performed.
In particular, if the dust collection sheet 21 that captures dust and the like is used as a sterilization sheet, the captured germs can be killed, and can be used effectively in hospitals and the like.
[Brief description of the drawings]
FIG. 1 is an overall perspective view of an air cleaner according to a first embodiment.
FIG. 2 is a longitudinal side view of the air cleaner according to the first embodiment.
FIG. 3 is a cross-sectional plan view of the air cleaner of the first embodiment.
FIG. 4 is an exploded perspective view of the air cleaner according to the first embodiment.
FIG. 5 is a front view showing a part of a corona discharge electrode of the air cleaner according to the first embodiment.
FIG. 6 is a side view showing an example of use of the air cleaner of the first embodiment.
FIG. 7 is a front view showing another embodiment of the corona discharge electrode.
[Explanation of symbols]
1 Body Case 2 Stand 16 Corona Discharge Electrode 18 Counter Electrode 21 Dust Collection Sheet P Axis

Claims (2)

A main body case (1) which is formed in a slender shape as a whole and has an air inlet (4) formed on the front surface;
An inner case (5) provided inside the case (3) after being detachably connected to the body case (1);
A corona discharge electrode (16) which is installed on the front side of the inner case (5) via the left and right legs (15), and to which a high voltage is applied;
An electrode support plate (17) detachably engaged with the inner case (5);
A dust collecting counter electrode (18) attached to the front surface of the electrode support plate (17);
A dust collecting sheet (21) disposed on the front surface of the electrode support plate (17) and capturing charged fine particles that have been attracted and moved toward the counter electrode (18),
Both ends in the longitudinal direction of the main body case (1) are supported so as to be rotatable about an axis (P) along the longitudinal direction of the case with respect to the left and right stands (2),
A dust collection sheet (21) is inserted along a rail-shaped guide (17b) provided in the left and right direction above and below the front surface of the electrode support plate (17), and from one end in the left and right direction of the electrode support plate (17). An air purifier characterized by being able to drop and take out under its own weight .   The air cleaner according to claim 1, wherein the dust collection sheet (21) is a sterilization or antibacterial sheet.

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