JPH0537351U - Electrostatic air purifier - Google Patents

Abstract

(57) [Summary] [PROBLEMS] An object of the present invention is to provide an electrostatic air purifying device configured so that a cover can be easily and reliably locked onto a main body. [Structure] In the electrostatic air purifying apparatus, a cover 13 having an ionizing electrode 33 is locked to a main body 11 having a dust collecting electrode 36 by a locking mechanism 22. The locking mechanism 22 includes the cover 1
3 When the operation knobs 23, 24 on the upper part of 3 are pressed, the pair of sliding members 26, 27 are separated from each other to form a space for inserting the upper end of the shaft 21 between the sliding members 26, 27. Sliding member 2
3 and 24 are displaced in the proximity direction by the pressing force of the operation knobs 23 and 24 as well as by the spring force of the coil spring to clamp the constricted portion 21a of the shaft 21.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electrostatic air purifier, and more particularly to an electrostatic air purifier configured to adsorb dust in the air by using ionic wind.

[0002]

[Prior Art]

 As a conventional electrostatic air purifying device, there is, for example, the device disclosed in Japanese Patent Application Laid-Open No. 2-198650 previously proposed by the present applicant.

This electrostatic air purifier is provided with an ionization electrode (cathode) for ionizing dust particles floating in the air and a dust collecting electrode (anode) for adsorbing ionized particles, A dust collecting paper is interposed between both electrodes so as to cover the surface of the dust collecting electrode, and the ionized dust is attached to the surface of the dust collecting paper. When the potentials are set on both electrodes, lines of electric force are generated from the ionization electrode to the dust collection electrode, which causes an ionic wind flowing between the electrodes. Due to this ion wind, ambient air flows into the device, passes through the surface of the dust collecting paper, and flows out to the outside. When dust in the air flowing into the equipment comes into contact with gas ions and electrons generated by electric discharge, it is negatively charged and moves toward the dust collecting electrode side to adhere to the dust collecting paper.

Further, it has been considered to further improve the dust collection efficiency as a structure in which discharge between the electrodes is more likely to occur than in the structure of the above publication.

In such a device, the dust collecting electrode is provided on the outer circumference of the cylindrical portion of the main body, and the ion electrode is provided on the inner circumference of the cover attached so as to cover the cylindrical portion of the main body. Thus, the cover is locked to the main body so that both electrodes face each other.

A conventional locking mechanism is, for example, as shown in FIG. 7, a wedge-shaped locking portion 2 provided on an upper end of a shaft 1 as a locked member standing upright in a central portion of a main body, and an upper portion of a cover 2. The locking member 3 is fixed to the inner wall. The locking member 3 is formed by bending a metal plate, and the pair of corner portions 3a and 3b sandwich the constricted portions 2a and 2b of the locking portion 2 from both sides.

When attaching the cover, as shown in FIG. 8, the inclined portions 2c and 2d of the wedge-shaped engaging portion 2 and the corners 3a and 3b of the engaging member 3 are aligned with each other and pressed against the cover. .. When the cover is removed, the pair of corners 3a and 3b of the locking member 3 are displaced in the direction in which they are separated by the outer circumference of the shaft 1 by rotating the cover 90 degrees, and in that state the cover is lifted upward.

[0008]

[Problems to be solved by the device]

 However, in the above-mentioned conventional locking mechanism, since the inside cannot be seen by the cover when the cover is attached, it is difficult to make the inclined portions 2c, 2d of the shaft 1 and the corners 3a, 3b of the locking member 3 in the same direction. The constricted portions 2a and 2b of the shaft 1 may not be completely locked by the locking member 3, and there is a problem that the distance between the ionization electrode and the dust collecting electrode formed in an annular shape is not uniform.

Therefore, the present invention aims to provide an electrostatic air purifying device that solves the above problems.

[0010]

[Means for Solving the Problems]

 According to the present invention, a main body having a cylindrical portion around which dust collecting paper is wound so as to cover the dust collecting electrode, a cover having an ionization electrode on an inner wall facing the dust collecting paper on the outer periphery of the cylindrical portion, and the cover In an electrostatic air cleaning device having locking means for locking to a more upright locked member, the locking means is a pair of operation slidably provided on the upper surface of the cover. A knob, a pair of sliding members slidably provided inside the cover, and separated from the locked member in association with a sliding operation of the pair of operation knobs, and the pair of sliding members. , A biasing member for biasing the pair of sliding members in a direction of approaching each other so as to sandwich the locked member.

[0011]

[Action]

 When attaching the cover to the main body, the pair of operating knobs are pressed against the urging force of the urging member to separate the sliding members inside the cover, and the locked member standing upright from the main body is the pair of sliding members. When it is located in between, the pair of sliding members sandwich the locked member by releasing the pressing operation of the operation knob. Since the space between the pair of sliding members can be enlarged, the locked member can be locked easily, and the distance between the ionization electrode and the dust collecting electrode can be made uniform without any displacement with respect to the locked member. When removing the cover from the main body, the pair of operating knobs are pressed to separate the pair of sliding members from the locked member and lift the cover.

[0012]

【Example】

 1 to 4 show an embodiment of an electrostatic air purifying device according to the present invention.

In each of the drawings, in the electrostatic air purifying device, a dust collecting unit 12 is provided on the upper part of the device body 11, and a cup-shaped cover 13 that covers the periphery of the dust collecting unit 12 is attached to the upper part of the body 11. It becomes.

A fan (blower) 16 for blowing air is provided between the bottom portion 14 of the main body 11 and the base 15 on which the dust collecting unit 12 is placed. The fan 16 is provided so as to be located in the flow path 42 between the bottom end of the cover 13 and the bottom portion 14 through which the air from the ventilation hole 15a of the base 15 flows, and has an impeller 6b having a plurality of blades 6a, and a main body 11. It is composed of a motor 16c (indicated by a broken line in FIG. 1) which is provided inside and rotationally drives the impeller 16b.

A power switch 17, a fan start switch 18 of the fan 16, a timer 19, and a power lamp 20 are provided on the front surface 11 a of the main body 11. The fan start switch 18 is composed of a slide switch, and can be switched to off, weak wind, and strong wind modes.

The cover 13 has a grid-shaped rib 13a extending in the up-down direction on the outer periphery of the cup and air inflow slits 13b formed between the ribs 13a are alternately formed at a constant pitch. .. A locking mechanism 22 is provided on the upper portion 13c of the cover 13 to hold the upper end of a shaft (locked member) 21 standing upright in the center of the main body 11 and lock the cover 13 to the main body 11. ..

FIG. 5 and FIG. 6 show a locking mechanism 22 which constitutes a main part of the present invention. 6 is an exploded perspective view of the locking mechanism 22 as seen from below.

In both figures, the locking mechanism 22 is fixed to a pair of operation knobs 23 and 24 slidably provided in a recess 13d formed in an upper portion 13c of the cover 13 and an upper inner wall of the cover 13. A fixed base 25 and a pair of sliding members 26 and 27 that are slidably provided inside the cover 13 and that slide in a direction away from the upper end of the shaft 11 in association with the operation of the operating knobs 23 and 24. The sliding members 26 and 27 are composed of a pair of coil springs 28 and 29 for urging the pair of sliding members 26 and 27 in a direction of approaching each other so as to clamp the upper end of the shaft 11.

As shown in FIG. 5, the pair of operation knobs 23 and 24 are formed in the same shape, and are arranged symmetrically with respect to a protrusion 13e protruding from the center of the upper portion 13c of the cover 13. Further, each of the operation knobs 23 and 24 has knob portions 23a and 24a which are recessed in an arc shape on the outside. Therefore, when the cover 13 is attached to or detached from the main body 11, the knob portions 23a and 24a of the operation knobs 23 and 24 are pressed with fingertips, and the operation knobs 23 and 24 are slid in the directions (A and B directions) in which they are close to each other. ..

As shown in FIG. 6, the fixed base 25 has rectangular through holes 25a to 25d (25d in FIG. 6 are hidden and invisible) and coil springs 28 and 29 extending in the A and B directions. Spring engaging portions 25e and 25f to which one end of is engaged.

The pair of sliding members 26, 27 are formed in the same shape, and are formed by pressing a sheet metal into a substantially C shape. The sliding members 26 and 27 are provided with a pair of holes 26a, 26b, 27a and 27b into which the connecting pins 30a to 30d penetrating the respective through holes 25a to 25d of the fixed base 25 are fitted, and the fixed base 25 is formed. It has spring retaining portions 26c and 27c which are bent so as to face the spring retaining portions 25e and 25f and which engage the other ends of the coil springs 28 and 29. Further, the sliding members 26 and 27 are hook-shaped locking portions 26d and 27d, and rectangular reliefs extending in the A and B directions so that the locking portions 26d and 27d can slide on each other. It has parts 26e and 27e. The pair of connecting pins 30a and 30b have their upper ends fitted into the holes 23c and 23d on the bottom side of the one operation knob 23, and their lower ends fitted into the holes 26a and 26b of the one sliding member 26. And the sliding member 26 are connected. Further, the other connecting pins 30c, 30d have their upper ends fitted into the holes 24c, 24d on the bottom surface side of one operation knob 24 (however, 24d in FIG. 6 is hidden and not visible), and the lower ends are the other sliding members. The operation knob 24 and the sliding member 27 are connected to each other by fitting them into the holes 27 a and 27 b. The connecting pins 30a to 30d are guided by through holes 25a to 25c extending in the A and B directions so as to be movable only in the A and B directions.

Further, the pair of sliding members 26, 27 are urged in the directions in which they approach each other by the tensile force of the coil springs 28, 29, respectively. That is, the locking portion 26d of the one sliding member 26 is pressed in the B direction, and the locking portion 27 of the other sliding member 27 is pressed in the A direction. Therefore, when the pair of operation knobs 23 and 24 are pressed in the A and B directions so as to be close to each other, the locking portions 26d and 27d are separated from each other against the spring force of the springs 28 and 29. Sliding displacement in the direction.

A band-shaped ionization electrode (cathode) 33 is attached to the inner wall 13d of the cover 13 over the entire circumference. The ionization electrode 33 has a large number of linear projections 33a that project obliquely upward and downward so that corona discharge is likely to occur.

The ionization electrode 33 is connected to a male connector 34 protruding from the lower end of the cover 13 as shown in FIG.

The dust collecting unit 12 has a substantially cylindrical roll accommodating portion (cylindrical portion) 35 standing upright on the base 15, and a mesh-like dust collecting electrode (anode) 36 fixed to the outer periphery of the roll accommodating portion 35. And a dust collecting paper 38 that is drawn from a dust collecting paper roll 37 housed in the roll housing portion 35 and wound around the outer circumference of the dust collecting electrode 36. The roll accommodating portion 35 has a plurality of ventilation holes 35a on its outer periphery, and a slit (not shown) for pulling out the dust collecting paper 38 to the outside is formed in a part of the cylindrical portion.

The dust collecting electrode 36 is also formed on the entire circumference of the roll accommodating portion 35 except for the slit portion for drawing out the dust collecting paper.

A fitting portion 35b into which the core 37a of the roll 37 fits is projected at the bottom of the roll storage portion 35.

Reference numeral 39 denotes a disc-shaped roll retainer, which has a central hole 39 a through which the shaft 21 penetrates in the center, and a seal member 4 having a U-shaped cross section for sealing between the central hole 39 a and the inner wall 35 c of the accommodating portion 35. 0 is fitted. Therefore, the roll retainer 39 abuts on the upper surface of the roll 37 to hold the roll 37 so that it does not move up and down, and the seal member 40 sucks air from which dust has not been removed on the upper portion of the storage portion 35 when the fan 16 is activated. To prevent

The periphery of the dust collecting unit 12 having the above structure is covered with the cover 13. When the cover 13 is attached to the main body 11, the cover 13 is such that the male connector 34 protruding from the lower end fits into the female connector 41 (shown by a broken line in FIG. 3) provided on the support portion 11b at the rear of the main body 11. And is locked to the shaft 21 by the locking mechanism 22.

As described above, when the cover 13 is attached to the main body 11, the locking mechanism 22 is operated by pressing the upper operation knobs 23 and 24 in the directions in which they approach each other (A and B directions). The sliding members 26 and 27 in the cover 13 are displaced in directions (B and A directions) away from each other. As a result, the locking portions 26d and 27d of the pair of sliding members 26 and 27 are greatly opened, and the upper end of the shaft 21 standing upright from the main body 11 can be easily locked even if the inside of the cover 13 cannot be seen from the outside. , 27d.

Then, after confirming that the male connector 34 is connected to the female connector 41, the pressing operation of the pair of operation knobs 23 and 24 is released. As a result, the pair of sliding members 26 and 27 return in the B and A directions by the tensile forces of the springs 28 and 29, respectively, and the pair of locking portions 26d and 27d slide in the directions in which they approach each other. Therefore, the small diameter constricted portion 21a provided at the upper end of the shaft 21 is clamped by the pair of locking portions 26d and 27d, and as a result, the cover 13 is locked to the shaft 21 by the opening / closing operation of the locking mechanism 22. ..

As shown in FIG. 6, since the pair of locking portions 26d and 27d slide in the separating direction by the above operation, a square between the locking portions 26d and 27d that is sufficiently wider than the outer diameter of the shaft 21 is provided. A shaped space is formed. Therefore, when the cover 13 is mounted on the main body 11, the shaft 21 can be easily inserted between the locking portions 26d and 27d without being disengaged from the space, and the cover 13 can be securely engaged with the upper end of the shaft 21. Can be stopped. As a result, the distance between the dust collecting electrode 16 on the inner side and the ionizing electrode 33 on the outer side becomes uniform over the entire circumference, and stable ion wind can be obtained over the entire circumference.

Here, when the power switch 17 is turned on, for example, −7 kv is applied to the ionization electrode 33, and +7 kv is applied to the mesh-shaped dust collecting electrode 36. As a result, lines of electric force are generated from the ionization electrode 33 toward the dust collecting electrode 36. At this time, since the dust collecting electrode 36 is formed on the entire circumference of the cylindrical roll accommodating portion 35, the lines of electric force from the ionization electrode 33 are generated toward the entire outer surface of the roll accommodating portion 35. .. Therefore, the dust collection efficiency is higher than before.

When the line of electric force is generated between the ionization electrode 33 and the dust collection electrode 36 as described above, an ion wind as shown by an arrow in FIG. 1 is generated. Therefore, the air around the cover 13 passes through the slit 13b and flows into the inside of the cover 13, and further passes through the dust collecting paper 38 wound around the outer circumference of the dust collecting electrode 36 and the slit 35a of the roll accommodating portion 35. It flows into the roll storage portion 35.

That is, since the ionization electrode 33 has a plurality of linear protrusions 33a, discharge is easily started by a high voltage, and when gas ions or electrons generated by the discharge come into contact with dust, the dust is negatively charged. The negatively charged dust (ionized dust) moves toward the dust collecting electrode 36 having a higher potential than the ionizing electrode 33. Since dust collecting paper 38 is wound around the dust collecting electrode 36, dust in the air adheres to the dust collecting paper 38.

Therefore, clean air from which dust has been removed passes through the dust collecting paper 38 and flows into the inside of the roll accommodating portion 35, and further passes through the ventilation hole 15 a of the base 15 and the lower end of the cover 13 and the bottom portion of the main body 11. It diffuses to the surroundings by passing through the flow path 42 formed between 14 and 14.

However, since the amount of air sucked in is small with only the above-mentioned ionic wind, when the air cleaning device is installed in a large room, the fan start switch 18 is slid to the “weak” position. As a result, the impeller 16b of the fan 16 is rotationally driven, and the air inside the roll storage portion 35 is sucked downward to forcibly suck the air around the cover 13.

As a result, the amount of air sucked in is increased and the dust adsorption efficiency is higher than in the case of only the ion wind described above.

When the room air is cleaned in a shorter time, the fan start switch 18 is slid to the “strong” position. As a result, the impeller 16b of the fan 16 rotates at a higher speed, and the amount of air sucked into the device from around the cover 13 increases, so that the air in the room can be cleaned in a short time even in a large room. ..

In this way, the amount of air sucked into the device can be increased or decreased in stages by switching the fan start switch 18 between OFF, weak, and strong. Therefore, the amount of air can be changed according to the size of the room or the degree of air pollution. The amount of air suction can be adjusted, and the air in a large room can be efficiently cleaned by activating the fan 16.

Further, when removing the cover 13, it suffices to push the operation knobs 23 and 24 of the locking mechanism 22 to release the locking with respect to the shaft 21 and lift the cover 13 upward.

Although the sliding members 26 and 27 are biased in the opposite directions by the springs 28 and 29 in the above embodiment, the present invention is not limited to this, and, for example, a torsion spring may be used. Alternatively, one coil spring may be stretched between the spring retaining portions 26c and 27c of both members.

Further, the locked member is not limited to the shaft 21, and it is needless to say that a rod-shaped member having a quadrangular cross section or a protrusion having another shape may be used.

[0044]

[Effect of the device]

 As described above, when the cover is attached to the main body, the electrostatic air purifying apparatus according to the present invention pushes the pair of operation knobs to separate the pair of sliding members from each other, so that the locked member on the main body side is locked. Can be easily inserted between the sliding members, and the pair of sliding members are urged by the urging member by releasing the pressing operation on the operation knob to clamp the locked member, which is easy. In addition, the cover can be securely locked to the main body.

Therefore, by the above-mentioned locking operation, the distance between the dust collecting electrode on the main body side and the ionizing electrode on the cover side can be made uniform over the entire circumference, and a stable ionic wind can be obtained between both electrodes. The dust inside can be efficiently adsorbed to the dust collecting paper. Further, even when the cover is removed from the main body, the cover can be easily removed from the main body simply by pressing the pair of operation knobs to separate the pair of sliding members from the locked member.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of an embodiment of an electrostatic air cleaner according to the present invention.

FIG. 2 is a front view of the electrostatic air purifier shown in FIG.

FIG. 3 is a side view showing a main body and a dust unit with a cover removed.

FIG. 4 is a side view of the cover.

FIG. 5 is a perspective view showing a locking mechanism provided on the top of the cover.

FIG. 6 is an exploded perspective view of the locking mechanism as viewed from below.

FIG. 7 is a perspective view showing a conventional locking mechanism.

FIG. 8 is a perspective view showing a mounting state of a conventional locking mechanism.

[Explanation of symbols]

 11 Device Main Body 12 Dust Collection Unit 13 Cover 14 Bottom 15 Base 16 Fan 22 Locking Mechanism 23, 24 Operation Knob 25 Fixed Base 26, 27 Sliding Member 28, 29 Coil Spring 30a-30d Connection Pin 33 Ionization Electrode 35 Roll Storage 36 Dust collecting electrode 37 Dust collecting paper roll 38 Dust collecting paper 39 Roll presser

Claims (1)

[Scope of utility model registration request] 1. A body having a cylindrical portion on which dust collecting paper is wound so as to cover the dust collecting electrode, a cover having an ionization electrode on an inner wall facing the dust collecting paper on the outer circumference of the cylindrical portion, and the cover being the main body. In an electrostatic air cleaning device having a locking means for locking to a more upright locked member, the locking means is a pair of operation knobs slidably provided on the upper surface of the cover. A pair of sliding members that are slidably provided inside the cover and that are separated from the locked member in association with the sliding operation of the pair of operation knobs; An electrostatic air purifying apparatus comprising: a biasing member that biases the pair of sliding members toward each other so as to sandwich the locked member.