JP4770201B2 - Electric dust collection unit - Google Patents

Description

  The present invention relates to an electric dust collection unit that is provided with an air flow path such as an air conditioner and removes dust and odor components contained in air to be air conditioned.

  Conventionally, this type of electrostatic dust collection unit is known to have a needle-like discharge electrode (see, for example, Patent Document 1).

  The electric dust collection unit will be described below with reference to FIG.

As shown in the figure, a needle-like discharge electrode 104 is provided on the suction port 101 side of the filter frame 103 in which the suction port 101 and the blower port 102 are formed, and a lath is formed in the blower outlet 102 of the filter frame 103 so as to face the discharge electrode 104. Alternatively, a grounding electrode 105 such as a punching metal is provided, and a filter 106 is provided on the leeward side of the grounding electrode 105 to form a filter device 107.
Japanese Patent Laying-Open No. 2003-10731 ([0014], FIG. 1)

  Such a conventional electrostatic dust collection unit has a problem that the tip of the needle-like discharge electrode 104 faces in a direction substantially parallel to the ground electrode 105 and the dust collection performance is still insufficient and cannot be formed into a thin shape. It is required to secure a distance and form a thin shape.

  SUMMARY OF THE INVENTION The present invention solves the above-described problems, and an object of the present invention is to provide an electric dust collection unit that can secure a creepage distance to maintain safety and can be thinned.

In order to achieve the above object, the electrostatic dust collection unit of the present invention is provided with a ground electrode composed of a plurality of parallel electrodes parallel to the wind direction and a portion orthogonal to the wind direction, and provided on the windward side of the ground electrode. a first filter, a second filter provided on the leeward side of the ground electrode, and the second filter and, accommodating frame for accommodating the ground electrode to which the first filter is provided, the housing A holding frame for fixing the second filter and the ground electrode to the frame; and a lattice frame for fixing the needle-like electrode; and the first filter is sandwiched between the plurality of parallel electrodes on the windward side of the ground electrode. The second filter is mounted so as to be sandwiched between the ground electrode and the storage frame, and the ground electrode is sandwiched between the storage frame and the presser frame. Is mounted, the lattice frame is connected to the housing frame, in which a structure that does not contact with the presser frame.

  By this means, it is possible to obtain an electric dust collection unit that can secure a spatial distance and a creepage distance and can be thinned by maintaining safety.

  Another means is that a groove is formed at the base of the handle provided in the storage frame, and the end of the lattice frame can be fitted into the groove.

  By this means, an electric dust collection unit that can be easily assembled is obtained.

  Further, the other means includes a claw portion provided at an end portion of the storage frame, and a lattice frame provided with an engagement hole with which the claw portion is engaged, and the surrounding portion surrounding the engagement hole is provided with the lattice portion. It is provided on the frame.

  By this means, an electric dust collection unit capable of preventing the occurrence of leakage can be obtained.

  Another means is provided with an opening for ventilation provided in the presser frame and an enclosing rib surrounding the entire circumference of the opening.

  By this means, a creeping distance can be secured and an electric dust collection unit that can maintain safety can be obtained.

  Further, the other means includes a reinforcing rib stretched between a pair of longitudinal ribs forming the opening of the presser frame, and a cutout portion provided by cutting the ground electrode to the vicinity of the upper surface of the first filter. The lower end of the reinforcing rib is in contact with the upper end of the notch.

  By this means, an electric dust collection unit capable of suppressing abnormal discharge and ensuring safety can be obtained.

  Further, the other means is constituted by a pressing rib projecting vertically from the cross-sectional shape of the reinforcing rib, and a protruding rib extending from the head of the pressing rib to the left and right and extending vertically.

  By this means, it is possible to obtain an electric dust collection unit that can prevent leakage and ensure safety.

  According to the present invention, it is possible to provide an electric dust collection unit that can secure a spatial distance and a creepage distance and can be thinned by maintaining safety.

  In addition, it is possible to provide an electric dust collection unit having an effect of being easily assembled.

  In addition, it is possible to provide an electric dust collection unit that is effective in preventing the occurrence of leakage.

  In addition, it is possible to provide an electric dust collection unit that is effective in suppressing abnormal discharge and ensuring safety.

The invention according to claim 1 of the present invention includes a ground electrode composed of a plurality of parallel electrodes parallel to the wind direction and a portion perpendicular to the wind direction, and a first filter provided on the windward side of the ground electrode. a second filter provided on the leeward side of the ground electrode, the second filter and the receiving frame for accommodating the ground electrode to which the first filter is provided, the second in the housing frame The first filter is mounted so as to be sandwiched between the plurality of parallel electrodes on the windward side of the ground electrode. The second filter is mounted so as to be sandwiched between the ground electrode and the storage frame, and the ground electrode is mounted so as to be sandwiched between the storage frame and the presser frame, frame A press frame that is connected to the storage frame and does not contact the presser frame, and that fixes the ground electrode between the storage frame that stores the ground electrode and the lattice frame provided with the needle-like electrode. Even if it is a thin structure in which the lattice frame can be coupled close to the storage frame by adding, it has the effect that the space distance and the creepage distance can be secured and the safety can be maintained.

  According to the second aspect of the present invention, a groove portion is formed at a base portion of a handle provided in the storage frame, and an end portion of the lattice frame can be fitted into the groove portion. By providing the groove part to fit, the groove part provided in the storage frame can be easily assembled as a guide when the lattice frame is combined with the storage frame. It has the effect that it can be prevented.

  According to a third aspect of the present invention, there is provided a surrounding portion that includes a claw portion provided at an end portion of the storage frame and a lattice frame provided with an engagement hole with which the claw portion is engaged, and surrounds the engagement hole. Is provided in the lattice frame, and the engagement hole of the claw becomes vacant in the vicinity of the contact portion of the lattice frame, so that the engagement hole becomes an air passage and dust enters the dust collecting portion provided with the contact portion. In addition, it is possible to prevent leakage from occurring inside the dust collecting portion, and to prevent dust from entering by the surrounding portion surrounding the engagement hole, and the possibility of leakage occurring inside the dust collecting portion. In addition, it has an effect of preventing the separation after the storage portion and the lattice portion are joined.

  According to a fourth aspect of the present invention, there is provided a ventilation opening provided in the presser frame and an enclosing rib surrounding the entire periphery of the opening, and the second filter and the first filter are provided by the presser frame. The earth electrode provided with the filter can be positioned and fixed at the same time, and the strength of the presser frame can be increased by surrounding the entire periphery of the opening with the surrounding rib, and the creepage distance can be secured. It has the effect of improving safety.

  According to a fifth aspect of the present invention, there is provided a reinforcing rib stretched between a pair of longitudinal ribs that form the opening of the presser frame, and a ground electrode cut out to the vicinity of the upper surface of the first filter. A lower end portion of the reinforcing rib is in contact with the upper end portion of the notched portion, and the second or second reinforcing rib is provided in the opening of the presser frame, thereby providing the second It is possible to prevent the ground electrode provided with the filter and the first filter from being lifted, and to suppress abnormal discharge and ensure safety.

  According to a sixth aspect of the present invention, the reinforcing rib is formed by a pressing rib projecting vertically from the cross-sectional shape, and a protruding rib extending from the head of the pressing rib to the left and right and extending vertically. The presser frame that fixes the ground electrode provided with the first filter and the ground electrode is reinforced, and the creepage distance is secured by the overhanging rib, thereby preventing leakage and improving safety. .

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
As shown in FIGS. 1 to 3, a lattice frame 2 to which a plurality of needle-like electrodes 1 are fixed, a storage frame 3 to which the lattice frame 2 is attached, and parallel electrodes 4 to be stored in the storage frame 3. The ground electrode 5 provided and the first filter 6 having a dust collecting function on the upstream side of the ground electrode 5 are provided, and the second filter 7 having a deodorizing function is provided on the downstream side. A grounding electrode 5 provided with the first filter 6 and a holding frame 8 for fixing the second filter 7 are provided, and the holding frame 8 is formed so that the grid frame 2 does not come into contact with the holding frame 3. A groove portion 10 is formed at the base portion of the handle 9 provided in the storage frame 3 so as to be connected, and the end portion of the lattice frame 2 can be fitted into the groove portion 10.

  Further, a claw portion 11 is provided at the end of the storage frame 3, an engagement hole 12 that engages the claw portion 11 is provided in the lattice frame 2, and a surrounding portion 13 that surrounds the engagement hole 12 is provided in the lattice frame 2, An opening 14 for ventilation is formed in the presser frame 8, and surrounding ribs 15 are provided around the entire periphery of the opening 14.

  In the above configuration, when air flows into an electric dust collection unit attached to an air flow path such as an air conditioner (not shown) via a high voltage application device (not shown), it is provided on the lattice frame 2 that becomes a suction port. A large electric field is formed in the vicinity of the needle electrode 1 by the negative high voltage applied to the needle electrode 1 and the ground electrode 5.

  Further, the separated electrons adhere to the dust to charge the dust, the charged dust particles prevent the particles from buffering, and the dust is collected by the first filter 6 provided on the upstream side of the ground electrode 5, and the ground Odor components are collected by the second filter 7 provided on the downstream side of the electrode 5 and deodorized.

  Also, the storage frame 3 and the ground electrode 5 and the grid frame 2 for fixing the press frame 8 and the needle electrode 1 are provided, and the grid frame 2 is connected to the storage frame 3 so as not to contact the press frame 8. Thus, even if the structure is a thin structure in which the lattice frame 2 can be coupled in proximity to the storage frame 3, the spatial distance and the creepage distance can be secured.

  Further, by forming the groove portion 10 at the base portion of the handle 9 of the storage frame 3 and inserting and fixing the end of the lattice frame 2 in the groove portion 10, when the lattice frame 2 is combined with the storage frame 3, The provided groove 10 serves as a guide.

  In addition, an engagement hole 12 that engages with the claw portion 11 provided at the end of the storage frame 3 is provided in the lattice frame 2, and an enclosure portion 13 that surrounds the engagement hole 12 is provided in the lattice frame 2, thereby It is possible to prevent the dust from entering the inside of the dust collecting portion provided with the contact portion by using the hole 12 as an air passage, and it is possible to prevent the leakage current from being generated in the dust collecting portion.

  Further, by surrounding the entire circumference of the ventilation opening 14 provided in the presser frame 8 with the surrounding ribs 15, the positioning of the ground electrode 5 provided with the second filter 7 and the first filter 6 by the presser frame 8 is achieved. Fixing can be performed at the same time, and by surrounding the entire periphery of the opening 14 with the surrounding ribs 15, the strength of the presser frame 8 can be increased and a creeping distance can be secured.

(Embodiment 2)
As shown in FIGS. 5 and 6, the reinforcing rib 17 stretched between the pair of longitudinal ribs 16 forming the opening 14A of the presser frame 8A, and the first filter 6A provided on the ground electrode 5A. A presser rib 19 provided with a notch 18 cut out near the upper surface, the presser rib 19 projecting the cross-sectional shape of the reinforcing rib 17 vertically so that the lower end of the reinforcing rib 17 abuts the upper end of the notch 18, and the presser rib The projecting ribs 20 project from the head of 19 to the left and right and extend vertically.

  In the above configuration, by providing one or a plurality of reinforcing ribs 17 in the opening 14A of the presser frame 8A, the ground electrode 5A provided with the second filter 7A and the first filter 6A can be prevented from being lifted, and abnormal discharge is caused. Can be suppressed.

  Further, since the cross-sectional shape of the reinforcing rib 17 is formed by the pressing rib 19 and the overhanging rib 20, the pressing frame 8A for fixing the second filter 7A and the ground electrode 5A provided with the first filter 6A is reinforced. In addition, the occurrence of leakage can be prevented by securing the creepage distance by the overhanging rib 20.

  It can also be applied to the use of an air purifier with a thin structure using a holding frame for fixing the filter and the ground electrode.

Sectional drawing of the electric dust collection unit of Embodiment 1 of this invention (A) Exploded sectional view showing a state where the electric dust collecting unit is pressed by the holding frame (b) Cross sectional view showing a state where the electric dust collecting unit is pressed by the holding frame Rear view of lattice frame of the same electric dust collection unit Partial sectional view showing the state of the surrounding part of the same electric dust collecting unit The front view of the state which removed the lattice frame of the electric dust collection unit of Embodiment 2 of this invention Sectional drawing which shows the state of the reinforcement rib of the same electric dust collection unit Sectional view of a conventional electric dust collection unit

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Needle-shaped electrode 2 Grid frame 3 Storage frame 5 Ground electrode 5A Ground electrode 6 1st filter 6A 1st filter 7 2nd filter 8 Holding frame 8A Holding frame 9 Handle 10 Groove part 11 Claw part 12 Engagement hole 13 Enclosure Part 14 Opening part 14A Opening part 15 Surrounding rib 16 Rib 17 Reinforcement rib 18 Notch part 19 Pressing rib 20 Overhanging rib

Claims (6)

An earth electrode composed of a plurality of parallel electrodes parallel to the wind direction and a portion orthogonal to the wind direction;
A first filter provided on the windward side of the ground electrode;
A second filter provided on the leeward side of the ground electrode;
Said second filter and a housing frame for accommodating the ground electrode to which the first filter is provided,
A holding frame for fixing the second filter and the ground electrode to the storage frame;
A lattice frame for fixing the needle-shaped electrode,
The first filter is mounted so as to be sandwiched between the plurality of parallel electrodes on the windward side of the ground electrode,
The second filter is mounted so as to be sandwiched between the ground electrode and the storage frame,
The ground electrode is mounted so as to be sandwiched between the storage frame and the presser frame,
The electric dust collection unit configured such that the lattice frame is connected to the storage frame and does not contact the holding frame. The electric dust collection unit according to claim 1, wherein a groove portion is formed in a base portion of a handle provided in the storage frame, and an end portion of the lattice frame can be fitted into the groove portion. 2. A claw portion provided at an end portion of the storage frame and a lattice frame provided with an engagement hole with which the claw portion engages, and an enclosure portion surrounding the engagement hole is provided in the lattice frame. The electric dust collection unit described. The electric dust collection unit according to claim 1, further comprising: an opening for ventilation provided in the presser frame; and an enclosing rib surrounding the entire periphery of the opening. A reinforcing rib stretched between a pair of longitudinal ribs forming the opening of the presser frame, and a notch provided by cutting out to the vicinity of the upper surface of the first filter provided on the ground electrode, The electric dust collection unit according to claim 1, wherein a lower end portion of the rib is in contact with an upper end portion of the notch portion. 6. The electrostatic precipitator unit according to claim 5, wherein the reinforcing rib is formed by a pressing rib projecting vertically in a cross-sectional shape and a protruding rib extending from the head of the pressing rib to the left and right and extending vertically.

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