JP2018048759A - Air cleaning unit - Google Patents

Abstract

Provided is an air purifying unit in which only a filter can be attached and detached without removing a heavy blower unit and a stopper from an upper outer wall of equipment. A locking device includes a leg for fixing the filter to an installation surface, and a body rising up from the leg, the body holding a filter at a lower stage. A unit holding portion 19 for holding the filter between the unit 18 and the air supply unit at the upper stage, and a guide hole 20 slidably provided along the inner periphery of the protrusion. The guide hole 20 located in the unit holding portion 19 includes an upper and lower hole 21 for guiding the protrusion in the vertical direction, and a parallel hole 22 having one end connected above the upper and lower holes and guiding the protrusion in the direction parallel to the lower surface. And a recess 23 at the other end of which the projection is fitted downward. [Selection diagram] FIG.

Description

  The present invention is installed in a semiconductor manufacturing factory, a clean booth, or the like, which is a facility that requires a clean space, and supplies air to the clean space by passing outside air containing dust and various chemical components through a filter by a blower. The present invention relates to an air cleaning unit.

  Conventionally, an air purifying unit is disposed on a ceiling part of a semiconductor manufacturing factory, a clean booth or the like. The air purification unit is equipped with a dust collection filter that collects suspended dust and a chemical filter that adsorbs chemical components such as acids, alkalis, and organics. It is used for the purpose of supplying inside the equipment.

  A configuration of a conventional air cleaning unit is shown in FIG.

  The air cleaning unit 100 includes a fan 102 and a motor 103 in a box-shaped casing 101 to form a blower unit 104. The blower unit 104 includes an air supply port 105 that communicates with the fan 102 and sucks in external air, and an exhaust port 106 that opens the lower surface and blows in the sucked air. The blower unit 104 is used by being connected to a filter 107 that has a fibrous filter medium inside and collects or adsorbs contaminants and an air supply port 108 provided in the filter 107. An exhaust port 109 for discharging the purified air is provided below the filter. The exhaust port 106 and the filter air supply port 108 of the blower unit 104 have a bent portion 110 for fixing each other, and an airtight holding packing 111 is attached to the bent portion 110 or the filter bent portion 110 of the blower unit. It is attached. These are integrated while the packing 111 is sandwiched and crushed by the filter 107 or the bent portion 110 of the blower unit 104 using the screws 112 or the like. A nut portion 113 is provided on a side surface of the box-shaped casing 101, and a locking tool 114 for fixing to a facility on which the air purification unit 100 is mounted is fixed with a bolt 115.

  The installation state of the conventional air purification unit is shown in FIG.

  The air cleaning unit 100 is mounted on the upper part of the outer wall of the equipment ceiling 117 having the equipment air supply opening 116 of the same size as the exhaust port 109 of the filter. The configuration is fixed. The locking tool 114 for fixing includes a leg part 118 for installation on the ceiling surface of the equipment and a body part 119 that rises above the leg part 118 and faces the side surface of the blower unit. The body portion 119 has a fixing bolt through hole 120, and the fixing unit 115 can be integrated with the fastening unit 115 by tightening the fixing bolt 115 to the nut 113 provided in the blowing unit 104. The leg 118 has a fixing bolt through hole 121, and the air cleaning unit 100 can be fixed to the equipment ceiling 117 by tightening the fixing bolt 123 to a nut 122 provided on the equipment ceiling surface. The filter exhaust port 106 is also provided with a folding part 110 for fixing, and an airtight holding packing 111 is affixed to the filter bending part 110, and the airtightness is ensured while being crushed by sandwiching the packing 111 at the end of the equipment ceiling opening. Can be fixed.

  The through hole 120 provided in the body portion of the locking tool 114 is adjusted to a height at which the thickness of the packing can be compressed by 1/2 or more, and is first fixed with the blower unit, the locking tool 114, and the bolt 115, and then the bolt of the leg part. To fix the crushing amount of the packing 111. In order to cope with filters and packings of various thicknesses, the through hole 120 in the body portion may be a long hole in the height direction. As a means for ensuring airtightness, there is a case in which the packing 111 is not provided on the filter exhaust port 109 side and the entire corner of the contact portion between the filter 107 and the equipment ceiling 117 is sealed with a caulking material.

  With the above configuration, the air sucked by the blower unit can be supplied into the facility without leaking.

JP 2000-271419 A

  The filter requires regular maintenance because the pressure loss increases and the necessary air volume of the air cleaning unit decreases when the amount of collected material of the filter medium provided in the filter increases. Conventionally, during filter maintenance, the air cleaning unit is removed from the ceiling surface of the facility, moved to a safe low place, and then the screws are removed to replace the filter, which requires a lot of labor.

  The present invention provides an air purifying unit in which only a filter can be attached and detached without removing a heavy air blowing unit and a locking tool from the upper outer wall of the facility.

  In order to achieve the above object, the air purifying unit of the present invention can attach and detach a blower unit that generates an air flow, a filter that passes the air flow and purifies the air, the blower unit, and the filter. An air cleaning unit provided with a locking device that locks the air blowing unit, wherein the air blowing unit includes a suction port provided on an upper surface, an exhaust port provided on a lower surface, and a locking device that engages the locking device on a side surface. The filter includes an intake surface facing the lower surface and an exhaust surface facing the installation surface, and the locking device has a leg portion for fixing to the installation surface, A body portion that rises above the leg portion, and the body portion includes a filter holding portion that positions the filter in a lower stage, and the air blowing unit that is positioned in an upper stage, and places the filter between the installation surface and the filter section. Unit holding to hold And a guide hole slidably provided along the inner periphery of the protrusion, and the guide hole located in the unit holding part has an upper and lower hole that guides the protrusion in the vertical direction, and one end. A parallel hole connected above the upper and lower holes for guiding the protrusion in a direction parallel to the lower surface, and a recess for fitting the protrusion downward in the other end. Is achieved.

  According to the present invention, the blower unit is lifted by a locking tool and is held with a space between the filter and the filter can be pulled out and attached in the horizontal direction, and the blower unit is a heavy object. Thus, it is possible to provide an air cleaning unit in which only the filter can be replaced without removing the locking tool from the upper outer wall of the facility.

The disassembled perspective view of an air purifying unit. Sectional drawing of a ventilation unit. Sectional drawing of a filter figure. FIG. Air purification unit installation drawing. The figure which showed the filter removal method. The figure which showed the filter attachment method. FIG. The figure which showed the restriction | limiting of a filter insertion position. Enlarged view of the locking device with leg positioning. The disassembled perspective view of the conventional air purifying unit. The figure which shows the installation state of the conventional air purifying unit.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention. The following embodiment is an example embodying the present invention, and does not limit the technical scope of the present invention. In addition, the same reference numerals are given throughout the drawings, and the second and subsequent descriptions are omitted.
(Embodiment)
First, the configuration of the air purification unit according to the present invention will be described with reference to FIG. FIG. 1 is an exploded perspective view of an air cleaning unit according to the present invention.

  As shown in FIG. 1, the air cleaning unit 1 includes a blower unit 2, a filter 3, and a locking tool 4, and the equipment top surface side outer shell is formed by the locking tool fixing bolt 5 and the main body fixing bolt 6. Installed in part 7.

  As shown in FIG. 2, the blower unit 2 includes a blower unit housing 40 and a centrifugal fan 41.

  The blower unit housing 40 includes a suction port 8 on an upper surface and an exhaust port 9 on a lower surface, and has a plurality of bolt fixing portions 10 on a side surface.

  A locking tool fixing bolt 5 is fixed to the bolt fixing part 10 perpendicularly to the side surface with the locking tool 4 interposed therebetween, that is, the locking tool fixing bolt 5 forms a protrusion in the blower unit 2.

  The centrifugal fan 41 is positioned with the air intake portion positioned at the suction port 8 on the upper surface and the exhaust port facing the side surface of the blower unit housing 40. Centrifugal fan 41 is supplied with power from a control unit (not shown), and the motor is rotated by an on / off command to rotate centrifugal fan 41 connected to the rotating shaft of the motor. As the centrifugal fan 41 rotates, an air flow from the suction port 8 to the exhaust port 9 is generated.

  As shown in FIG. 3, the filter 3 includes a filter intake surface 11 that faces the exhaust port 9 of the blower unit 2 on the upper surface, and a filter exhaust surface 12 that faces the equipment top surface side outer shell 7 on the lower surface. The filter intake surface 11 and the filter exhaust surface 12 include a bent portion 13 as a connection surface to the blower unit 2 and the equipment top surface side outer shell portion 7. The filter 3 is, for example, a dust collection filter that collects floating dust or a chemical filter that adsorbs chemical components such as acid, alkali, and organic, and includes a filter medium 42 therein.

  The bent portion 13 includes an airtight packing 14 on the surface that contacts the blower unit 2 and the surface that contacts the equipment top surface side outer shell portion 7. The security packing 14 is provided over the entire circumference as an upper packing on the filter intake surface 11 and as a lower packing on the filter exhaust surface 12.

  As shown in FIG. 4, the locking tool 4 includes a leg portion 15 and a trunk portion 16.

  The leg portion 15 is provided with a plane parallel to the plane of the equipment top surface side outer shell portion 7. A hole 17 is provided on a plane that forms the leg portion 15, and the body fixing bolt 6 is passed through the hole 17 and fixed to the equipment top surface side outer portion 7, so that the leg portion 15 and the equipment top surface are fixed. The side shell 7 is fixed.

  The trunk portion 16 is provided as a plate-like member that rises above the leg portion 15. The body portion 16 includes a filter holding portion 18 that positions the filter 3 in the lower stage, and a unit holding portion 19 that positions the blower unit 2 in the upper stage and clamps the filter 3 with the installation surface.

  The unit holding part 19 is provided with a guide hole 20 that is wider than the diameter of the threaded part of the locking tool fixing bolt 5. That is, the threaded portion of the locking tool fixing bolt 5 can slide on the inner peripheral side of the guide hole.

  The guide hole 20 has an upper and lower hole 21 that guides the locking tool fixing bolt 5 in the vertical direction, a parallel hole 22 that has one end connected to the upper and lower holes 21 and guides the locking tool fixing bolt 5 in the horizontal direction, The other end, which is the end opposite to the one end, is provided with a recess 23 into which the locking tool fixing bolt 5 is fitted downward.

  Then, the installation method of the air purifying unit 1 is shown in FIG.

  A position where the thickness in the vertical direction of the packing 14 provided on the filter intake surface 11 and the filter exhaust surface 12 is crushed by more than 1/2 is defined as a bolt fixing position 24. In other words, the bolt fixing position 24 can be the bolt fixing position 24 where the bottom surface of the leg portion 15 of the locking tool 4 is above the upper surface of the packing 14 disposed on the filter exhaust surface 12 side. At this bolt fixing position 24, the locking tool fixing bolt 5 is passed through the upper and lower holes 21 in the guide hole 20 of the trunk portion 16, that is, the trunk portion 16 is sandwiched between the bolt head and the bolt fixing portion 10. In this state, the locking fixture fixing bolt 5 and the bolt fixing portion 10 are engaged. At this time, the position of the locking fixture fixing bolt 5 in the upper and lower holes 21 is lower than the upper end of the upper and lower holes 21, for example, the lower end of the upper and lower holes 21. Thereby, the locking tool 4 and the ventilation unit 2 are fixed and integrated.

  The above-described integration is performed for a plurality of bolt fixing portions 10 provided at, for example, four corners of the blower unit 2.

  In a state where the blower unit 2, the filter 3, and the equipment top surface side outline portion 7 are overlapped, the main body fixing bolt 6 is fastened to the equipment top surface side outline portion 7 through the hole 17 of the leg portion 15. Thereby, the air purification unit 1 is fixed to the equipment top surface side outer shell part 7 while the blower unit 2 is pressed downward and the packing 14 provided in the filter 3 is crushed to ½ or less.

  According to the above procedure, the air cleaning unit 1 and the filter 3 can be integrated as the air cleaning unit 1 while maintaining the airtightness of the joint portion of each member without directly mechanically fixing.

  Then, the filter 3 removal method of the air purifying unit 1 is shown in FIG.

  The bolt fixing part 10 provided in the blower unit 2 and the locking tool fixing bolt 5 are loosened and released from the bolt fixing position 24 defined in the locking tool 4. Thereby, the air blower unit 2 fixed to the equipment top surface side outer shell portion 7 by the locking tool 4 can freely slide on the inner periphery of the guide hole 20 via the protruding portion (FIG. 6A). ).

  For example, when protrusions are provided at the four corners of the blower unit 2, the blower unit 2 is moved so that the four protrusions are simultaneously disposed in the recesses 23 through the upper and lower holes 21 and the parallel holes 22. Since the recess 23 is provided above the bolt fixing position 24, a space can be formed between the exhaust port 9 of the blower unit 2 and the filter intake surface 11 (FIG. 6B). Thereby, the compression of the packing 14 provided on the filter intake surface 11 and the filter exhaust surface 12 is also released, and the filter 3 can be pulled out in the horizontal direction while being lifted and removed from the equipment top surface outer portion 7.

  Since the filter medium 42 is exposed on the filter intake surface 11, if the space between the blower unit 2 and the filter intake surface 11 is inadvertently released and the blower unit 2 comes into contact with the filter medium 42, the filter medium 42 may be damaged. . However, since the concave portion 23 is positioned below the parallel hole 22, once the protrusion is fitted into the concave portion 23, the blower unit 2 moves back from the parallel hole 22 to the upper and lower holes 21 unless the blower unit 2 is lifted and moved. The filter 3 can be removed safely without falling.

  Then, the filter 3 attachment method of the air purifying unit 1 is shown in FIG.

  As described above, the projection provided on the blower unit 2 is disposed in the recess 23 of the locking tool 4, and a space is formed between the exhaust port 9 and the filter intake surface 11 of the blower unit 2, and the equipment top surface side outer shell is formed. The filter 3 is installed at a position where the opening provided in the section 7 and the filter exhaust surface 12 are combined. In this state, for example, when projections are provided at the four corners of the blower unit 2, the blower unit 2 is lifted, and the four projections are simultaneously removed upward from the recesses 23 and arranged in the upper and lower holes 21 through the parallel holes 22. To do. That is, the blower unit 2 is moved to a position where the blower unit 2, the filter 3, and the equipment top surface outer shell portion 7 overlap each other in the vertical direction.

  In the state described above, the blower unit 2 is pressed downward along the upper and lower holes 21 and the packing 14 provided in the filter 3 is crushed to ½ or less, that is, the locking fixture fixing bolt 5 is installed at the bolt fixing position 24. Tighten with the bolt fixing part 10.

By the above procedure, the air blowing unit 2 and the filter 3 can be integrated again as the air cleaning unit 1 while maintaining the airtightness of the joint portion of each member. Note that the downward pressing is not necessarily required. If the packing 14 can be sufficiently crushed by the hardness of the packing 14 or the weight of the blower unit 2, the pressing is not necessary. Normally, the weight of the air cleaning unit 1 is about 10 to 20 kg. However, if the change of the filter as described above is used, one worker can safely replace the filter 3.
(Modification)
As shown in FIG. 8, a filter positioning bending portion 25 as an insertion restricting portion is provided in the filter holding portion 18 with respect to the locking device 4 shown in the above embodiment, that is, the locking device 4 is locked with positioning. The tool 26 may be used.

  The filter positioning bending portion 25 is provided as a plate that protrudes from the side surface of the body portion 16 in a direction perpendicular to the surface of the body portion 16. The filter positioning bending part 25 is provided only on one side of the body part 16. As shown in FIG. 9, the positioning-equipped locking tool 26 is arranged at two places on the filter back surface 27 when the filter 3 is inserted in the horizontal direction indicated by the arrow. In other words, it is provided in place of the two locking tools 4 arranged on the side of the filter inner surface 27.

  Because the positioning fixture 26 and the side surface of the filter 3 are in contact with each other at the position where the opening provided in the equipment top surface side outer portion 7 and the opening of the filter exhaust surface 12 are combined, movement in the filter insertion direction can be restricted. The filter 3 is reliably arranged at a correct position that coincides with the blower unit 2 in the vertical direction.

  As shown in FIG. 10, instead of the positioning locking member 26 as the insertion restricting portion, the leg portion is extended in parallel to the back side of the filter, and the filter positioning bent portion 25 is directed in the direction of the blower unit 2, and the filter holding portion 18. It is good also as the latch 28 with a leg part positioning, rising and connecting to the height of the upper end. Even if the locking member 28 with leg positioning is used, the same effect as that of the locking device 26 with positioning can be obtained.

  The air purifying unit according to the present invention is useful as an air purifying unit in which only the filter can be replaced without removing the heavy air blowing unit and the locking tool from the upper outer wall of the facility.

DESCRIPTION OF SYMBOLS 1 Air purifying unit 2 Blower unit 3 Filter 4 Locking tool 5 Locking tool fixing bolt 6 Main body fixing bolt 7 Outer part of equipment top surface 8 Suction port 9 Exhaust port 10 Bolt fixing part 11 Filter intake surface 12 Filter exhaust surface 13 Bending Part 14 Packing 15 Leg part 16 Body part 17 Hole 18 Filter holding part 19 Unit holding part 20 Guide hole 21 Upper and lower hole 22 Parallel hole 23 Recessed part 24 Bolt fixing position 25 Filter positioning bending part 26 Positioning locking tool 27 Filter back face 28 Locking device with leg positioning 40 Blower unit housing 41 Centrifugal fan 42 Filter medium

Claims (5)

An air purification unit comprising: a blower unit that generates an air flow; a filter that allows the air flow to pass through and purifies the air; and a fastener that detachably locks the blower unit and the filter. There,
The air blowing unit is
An air inlet provided on the upper surface;
An exhaust port provided on the lower surface;
Provided on the side surface with a protrusion that engages with the locking tool,
The filter is
An intake surface facing the lower surface;
An exhaust surface facing the installation surface,
The locking tool is
Legs for fixing to the installation surface;
A trunk that rises above the legs,
The trunk is
A filter holding part for positioning the filter in the lower stage;
A unit holding part for positioning the blower unit in the upper stage and sandwiching the filter with the installation surface;
A guide hole slidably provided along the inner periphery of the protrusion,
The guide hole located in the unit holding part is
Upper and lower holes for guiding the protrusion in the vertical direction;
A parallel hole having one end connected above the upper and lower holes and guiding the protrusion in a direction parallel to the lower surface;
An air cleaning unit comprising a recess at the other end for fitting the protrusion downward. The filter is
An upper packing closely contacting the exhaust port at an end of the intake surface;
The air cleaning unit according to claim 1, further comprising a lower packing that is in close contact with the installation surface at an end of the exhaust surface. The air purifying unit according to claim 1, further comprising an insertion restricting portion that restricts movement of the filter in the insertion direction on a side surface in the insertion direction of the filter in the filter holding portion of the body portion. The air purification unit according to any one of claims 1 to 3, wherein the leg portion includes an insertion restriction portion that restricts movement of the filter in the insertion direction. The locking device,
At least two on the side of the blower unit,
The air purification unit according to any one of claims 1 to 4, wherein at least two air purification units are provided on opposite side surfaces facing the side surface.

Images