JPH04281810A - Ceiling embedment type air cleaner - Google Patents

Abstract

PURPOSE:To greatly improve the efficiency of maintenance operations and to lessen labor as all dust collecting elements 20 can be attached and detached by one time of removing operation and further to attach and detach a supporting shaft 47 to and from a groove 46 while viewing a supporting shaft inlet/outlet port 46a from below, thereby facilitating and sppeding up the attaching and detaching operation of an element frame. CONSTITUTION:An element frame 19 freely attachably and detachably housing plural pieces of the dust collecting elements 20 is disposed in a casing 16 opened downward. A supporting mechanism which supports these elements 20 freely attachably and detachably to the above-mentioned casing 16 has the supporting shaft 47 fixed to both sides at one end of the element frame 19. The groove 46 which freely attachably and detachably supports the above-mentioned supporting shaft 47 is mounted to this casing 16. The supporting shaft inlet/ outlet port 46a of the groove 46 is formed on the lower surface of the casing 16. The supporting shaft 47 is attached and detached into and from the groove 46 from the supporting shaft inlet/outlet port 46a.

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] The present invention relates to a ceiling-embedded air cleaner, and more specifically, a downwardly open casing arranged in a ceiling space, and a plurality of dust collectors housed inside the casing. Regarding something equipped with an element.

0002

2. Description of the Related Art Generally, this type of air cleaner is disclosed in, for example, Japanese Utility Model Publication No. 64-3466. In this structure, an outer frame is fixed to the opening edge of a ceiling plate that partitions a ceiling space, a suction grill is placed inside the outer frame so that it can be opened and closed, and a grille is placed in the ceiling space opposite to the suction grill. It includes a casing opened downward and a plurality of dust collection elements housed inside the casing.

[0003] The plurality of dust collecting elements are individually and removably housed in a housing space provided within the casing.

0004

[Problems to be Solved by the Invention] In this way, in the air cleaner, the plurality of dust collection elements are individually and removably housed in the accommodation space provided in the casing, so that the dust collection When replacing the elements, climb up the stepladder, remove one dust collection element, go down to the bottom of the stepladder, place the collected dust collection element in the designated place, and then continue until you collect the remaining dust collection elements. I kept climbing up and down the stepladder. Therefore, a lot of effort was required to maintain the dust collection element.

[0005]Also, it is conceivable that one person removes the dust collection element from the top of the stepladder, and another person carries the collected dust collection element from under the stepladder, but this method is not preferable because it requires more labor. do not have. Furthermore, if furniture such as a locker is placed directly under the air purifier, it may be difficult to collect the dust collection element.

The present invention has been made in view of the above-mentioned problems, and includes an element frame in which a plurality of dust collection elements are individually and detachably housed in a casing, and an element frame that can be attached and detached from the casing through the outer frame. It is an object of the present invention to provide an improved ceiling-embedded air cleaner in which a plurality of dust collection elements can be removed at one time by providing a support mechanism that supports the dust collection elements in a manner that allows the dust collection elements to be removed at one time.

The present invention further provides a support shaft fixed to both ends of one side of the element frame, and a slider rotatably supported on either the other side of the element frame or the casing via a rotation shaft. A support mechanism is adopted, which supports the slider in a rotatable, slidable, and detachable manner, and includes a fulcrum shaft that constitutes a toggle mechanism for locking the element frame together with the rotation shaft and the support shaft. The object of the present invention is to provide an improved ceiling-embedded air cleaner that is constructed so that the element frame can be tilted and taken out, and the element frame can be attached and detached even in a small work space. .

[0008]Furthermore, the present invention is capable of rotatably and detachably engaging the support shaft while preventing the element frame from coming out of engagement with the support shaft when the element frame rotates around the support shaft. In addition to providing a groove in the casing to stop the
By forming the support shaft entrance/exit of this groove on the lower surface of the casing, in addition to the above-mentioned improvements, it is possible to engage and disengage the support shaft from the groove while visually observing the support shaft entrance/exit of the groove from below when removing the element frame. The purpose of the present invention is to provide an improved ceiling-mounted air purifier that can perform the following functions.

[0009]

[Means for Solving the Problems] In order to solve the above problems, the ceiling-embedded air cleaner of the present invention has an outer frame fixed to the opening edge of a ceiling plate that partitions a ceiling space, and a A ceiling including a suction grill arranged to be freely openable and closable, a downwardly open casing arranged in the ceiling space opposite to the suction grill, and a plurality of dust collection elements housed inside the casing. In the embedded air cleaner, the casing includes an element frame that individually and removably accommodates the plurality of dust collection elements, and the element frame is supported so as to be removable from the casing through the outer frame. A support mechanism is provided, and the support mechanism is rotatable via a support shaft fixed to both ends of one side of the element frame, and a rotation shaft to either the other side of the element frame or the casing. The slider is provided with a freely supported slider, and a fulcrum shaft that rotatably, slidably, and detachably supports the slider and constitutes an element frame locking toggle mechanism together with the rotation shaft and the support shaft, The casing is rotatably and detachably locked to the support shaft while preventing the element frame from coming out of engagement with the support shaft when the element frame rotates around the support shaft. Provide a groove,
A feature of the present invention is that the support shaft entrance/exit of this groove is formed on the lower surface of the casing.

0010

According to the present invention, by removing the element frame by passing it through the outer frame, all of the plurality of dust collection elements can be removed in one removal operation. Furthermore, according to the present invention, by rotating one end of the element frame downward about the support shaft, the rotation shaft moves downward and the slider rotates about the fulcrum shaft. Further, after the rotation shaft passes through the dead center, the element frame is unlocked, and the element frame is taken out from the casing in an inclined state.

Furthermore, according to the present invention, since the support shaft entrance/exit of the groove is formed on the lower surface of the casing, the support shaft can be engaged/disengaged from the groove while visually observing the support shaft entrance/exit of the groove from below.

0012

Embodiments Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. As shown in FIG. 1, an air cleaner showing an embodiment of the present invention includes an outer frame 3 fixed to a ceiling plate 2 that partitions a ceiling space 1. As shown in FIG. The outer frame 3 is a frame member having a generally rectangular plane, and is provided with a discharge port 4 on the periphery and a suction port 5 in the center.

A suction grill 6 is arranged at the suction port 5 of the outer frame 3. One end of the suction grill 6 is supported via a hinge 7 to one edge of the outer frame 3 that partitions the suction port 5 so as to be openable and closable in the direction of arrow A, and the other end is connected to the suction port via a stopper 8. It is supported by the other edge of 5. A housing 10 having an octagonal plan view is placed on the upper part of the outer peripheral edge of the outer frame 3 that defines the discharge port 4 with a seal 9 interposed therebetween. Housing 10
is suspended by a stay 11 together with the ceiling plate 2 from a ceiling (not shown) that partitions the ceiling space 1 .

The lower surface of the top plate portion 12 of the housing 10 is reinforced by a reinforcing plate 13. And this reinforcement plate 1
A motor 15 of a fan 14 is fixed to the center of the housing 10, and the fan 14 is connected to a skylight 17 of a downwardly open casing 16 housed inside the housing 10.
It faces the suction grill 6 via. Casing 16
is placed on the upper end of the periphery of the outer frame 3 that partitions the suction port 5 through the seal 18 . An element frame 19 is detachably housed inside the casing 16, and within this element frame 19, for example, three dust collection elements 20 (only one is shown in FIG. 1), which will be described in detail later, can be attached and detached individually. It is freely accommodated. The casing 16 connects the anode power terminal 22 and ionization power terminal 23 fixed to the insulator 21 to the corresponding dust collection element 20.
The anode connection terminal 24 and the ionization connection terminal 25 of each dust collection element 20 are engaged with each of these power supply terminals 22 and 23, respectively. Then, electricity supplied to each power terminal 22, 23 from a power source (not shown) is supplied to the dust collecting element 20 via each connecting terminal 24, 25, so that each dust collecting element 20 performs a dust collecting function. It is configured.

As shown in detail in FIG. 2, the element frame 19 is a rectangular frame member with a rectangular plane, and therein is a housing space 27 divided into three equal parts by a partition plate 26.
is formed. A dust collecting element 20 (only one is shown in FIG. 2) corresponding to this accommodation space 27 is arranged. In order to allow each dust collection element 20 to be attached and detached individually, a first stopper 28a and a first stopper 28a are provided at the lower end edge of the element frame 19, corresponding to each accommodation space 27, facing perpendicularly to the longitudinal direction. Two fasteners 28b are provided.

The first stop 28a is a pressed product made of soft iron, for example, and is a plate having a generally rectangular plane. Stop 2
A rectangular notch K extending in the longitudinal direction is provided on one side surface in the longitudinal direction of the stopper 8a, and both end sides of the one longitudinal side surface of the stopper 28a are bent at a right angle to form a pinched portion T. . At both ends of the stopper 28a, that is, in the vicinity of the gripping portion T, a pair of elongated holes N are provided, each extending obliquely at an angle of inclination of preferably about 45 degrees with respect to the longitudinal direction. The stopper 28a is slidably supported in a predetermined position with the notch K facing the dust collection element 20 by the screw 29 fitted into the elongated hole N.

That is, as shown by the solid line in FIG. 3, by grasping one side of the pinching part T with your fingers and pulling it toward the dust collecting element 20 (in the direction of arrow C), the intermediate part is removed from the plate of the dust collecting element 20. It is inserted between the shaped handle 20a and the bottom plate of the element frame 19, and the bottom of the dust collecting element 20 is pressed down with both ends to fix one end of the dust collecting element 20. In addition, as shown by the two-dot chain line in FIG.
A is released at the notch K. In this way, in this embodiment, the screw 29 passing through the long hole N is
As a result, the stopper 28a is held so that it can move forward and backward diagonally with respect to one side of the opening edge of the accommodation space 27, so that the gripping portion T formed at one end of the stopper 28a can be held with a finger. The plate-shaped handle 20a of the dust collection element 20 can be easily removed by simply grasping and operating it.
can be attached and detached. Therefore, the dust collection element 20
When individually taking out the dust collecting element 20 from the element frame 19, it is possible to hold the dust collecting element 20 with one hand and operate the stopper 28a with the other hand, which has the advantage of facilitating attachment and detachment operations.

As shown in FIG. 2, the second stop 28b includes a rectangular base plate 30, an engager 31 rotatably supported in an attitude extending diagonally with respect to the base plate 30, and an engager 31 that is rotatably supported with respect to the base plate 30. A supporting screw 29, a coiled spring 33 that is fastened together with the screw 29, a cover 34 that covers the proximal end of the coiled spring 33 and the engager 31, and a cover 34 and a substrate 30 that are attached to the lower edge of the element frame 19. It is provided with a screw 32a for tightening.

A locking portion 35 is cut and raised in the substrate 30, and by locking the base end of the engager 31 with the locking portion 35, the rotational position of the engager 31 in the protruding direction is determined. regulated. Further, a stop portion 36 is integrally formed on the free end side of the engaging element 31. The coiled spring 33 has one end 33a
and the other end 33b. One end portion 33a engages with the stop portion 36 of the engaging element 31, and the other end portion 33b engages with the stop portion 36 of the engaging element 31.
5, the engaging element 31 is urged in the projecting direction.

In order to accommodate the dust collecting element 20 in the accommodation space 27, first the first stopper 28a is inserted into the accommodation space 27.
With the second stopper 28b open, the engager 31 of the second stop 28b is
Press down from the stop 36 with your fingers against the elastic force of the coiled spring 33. Next, after housing the dust collecting element 20, the engaging element 31
Let go of your finger and finally engage the first stopper 28a with the lower surface of the dust collection element 20.

In order to rotatably support the element frame 19, a pair of projections 37 (only one is shown) is fixed to the upper surface of one end of the element frame 19 in the longitudinal direction. The base end of the slider 38 is
It is rotatably supported by a stepped bolt 39 serving as a rotation shaft. As shown in the figure, the slider 38 is a long sheet metal member that extends perpendicularly to the longitudinal direction of the element frame 19 in the assembled state (FIG. 1), and has a free end integrally formed with an overhang portion 40 that projects downward. has been done. The slider 38 has a sliding groove 41 extending in the longitudinal direction, and a release hole 42 formed in the overhang 40 continuously to the sliding groove 41.
is formed. A stepped bolt 43 serving as a fulcrum shaft is slidably fitted into this sliding groove 41, and this stepped bolt 43 is fixed to the casing 16 described in FIG. 1.

The stepped bolt 43 is integrally equipped with a flange-shaped head 44 (shown only in FIG. 2), and this flange-shaped head 44 is dimensioned so that it can be attached and detached only through the removal hole 42 of the slider 38. has been done. Further, in order to rotatably support the element frame 19, latches 45 are fixed to both ends of the other side of the element frame 19 in pairs in the longitudinal direction (only one is shown in FIG. 2).

As shown in FIG. 4, the latch 45 is an L-shaped sheet metal member, and has one end 45a fixed to one end surface of the element frame 19, and is bent at right angles to the one end 45a. It is integrally provided with a surface extending perpendicularly to one end surface and the other end portion 45b extending all the way. Here, the tip of a head bolt 47 serving as a support shaft is fixed to the other end 45b. And this headed bolt 47, stepped bolt 39 and stepped bolt 43
and constitute a fulcrum, thereby constructing a toggle mechanism for locking the element frame 19 in the state shown in FIG.

In order to pivotally support the head bolt 47, a substantially U-shaped groove 46 that opens downward is formed in the casing 16. The groove 46 includes a support shaft opening 46a through which the head bolt 47 can be inserted from the lower surface side of the casing 16 together with the head 47a, an upper extension part 46b extending upward from the support shaft entrance 46a, and an upper end of the upper extension part 46a. It consists of a horizontally extending portion 46c that extends horizontally from the bottom, and a downwardly extending portion 46d that extends downward from the end of the horizontally extending portion 46c. The head bolt 47 is inserted into the head 47 from the support shaft entrance 46a.
By being inserted with the element frame 19 and placed at the lower end of the lower extension part 46d, it can be freely rotated and detached while preventing the head bolt 47 from coming off when the element frame 19 rotates as described later. to lock. Here, since the support shaft entrance/exit 46a is formed on the lower surface of the casing 16, the head bolt 47 can be attached/detached while visually confirming the support shaft entrance/exit 46a. Therefore, the work of attaching and detaching the element frame 19, which will be described later, becomes easy and quick. In addition, in order to prevent the element frame 19 from lifting up when attaching and detaching the element frame 19,
A roller R is pivotally supported on the side surface of the casing 16 by a bolt b.

As shown in detail in FIGS. 5 to 7, a filter frame 50 having an angle frame structure is fixed to the upper side of the element frame 19 with bolts 51, and a deodorizing filter 52 (FIG. 7) is fixed to the filter frame 50. (only shown in the figure) is accommodated in an attitude facing the element frame 19. Legs 53 extending downward are integrally provided at the four corners of the filter frame 50, and the legs 53 are connected to the bolts 51.
It is integrally fixed to the element frame 19 by. As a result, as shown in FIG. 6, the deodorizing filter 52 and the dust collection element 20 are integrally formed with a space 54 formed therebetween for the air that has passed through the dust collection element 20 to diffuse. It constitutes a framework structure.

As shown in detail in FIG. 7, the filter frame 50
An inward flange 55 that supports the lower edge of the deodorizing filter 52 is integrally formed at the lower edge. Filter frame 50
The width W of is formed slightly wider than the width of the deodorizing filter 52, and the side end surface of the deodorizing filter 52 and the filter frame 50
An elastic cushion 56 made of, for example, polyurethane is interposed between the inner surface of the cover and the inner surface of the cover. As a result, when the deodorizing filter 52 is attached as shown by the solid line in FIG. 7, the deodorizing filter 52 is held between the inner surface of the filter frame 50 by the elastic force of the elastic cushion 56.

When replacing the deodorizing filter 52, press the deodorizing filter 52 from the anti-elastic cushion 52 side toward the elastic cushion 52 side as shown by arrow By dropping it from the inside to the bottom, you can take it out by tilting it to the position shown by the two-dot chain line. Next, the operation will be explained.

In the normal operating condition shown in FIG. 1, when the motor 15 rotates the fan 14, air is sucked into the interior through the suction port 5 of the suction grille 6. Furthermore, the air sucked inside passes through the deodorizing filter 52 from the dust collection element 20 through the space 54, reaches the inside of the housing 10 from the skylight 17 of the casing 16 by the fan 14, and is further drawn into the outer frame 3 as shown in FIG. is returned indoors through the discharge port 4.

In the embodiment described above, the deodorizing filter 52 is disposed between the fan 14, which is an air suction source, and the dust collecting element 20, and the deodorizing filter 52 and the dust collecting element 20 are made into an integral framework structure. , between the deodorizing filter 52 and the dust collecting element 20, the dust collecting element 2
Since a space 54 is formed in which the air that has passed through the dust collection filter 20 is diffused, the air that has passed through the dust collection filter 20 is diffused and filled in the space 54, and a portion of it overflows into the casing 16 from between the legs 53. It passes through the deodorizing filter 52 almost evenly. Therefore, the resistance of air passing through the deodorizing filter 52 is reduced, and vibrations and noise are also significantly reduced. Moreover, the deodorizing filter 52 is not locally contaminated and the entire deodorizing filter 52 can be used evenly, so the life of the deodorizing filter 52 is extended and the number of maintenance operations is reduced.

Next, when it is desired to replace all of the dust collection elements 20, first, the stopper 8 is removed, the suction grille 6 is rotated in the direction of arrow A, and the suction port 5 of the outer frame 3 is opened. Next, when the element frame 19 is supported by hand and rotated downward around the head bolt 47 as shown by arrow B, the shoulder bolt 39 serving as a rotation axis is rotated downward around the head bolt 47. At the same time, the slider 38 rotates upward around the stepped bolt 39 and around the stepped bolt 43 as a fulcrum shaft. As a result, as shown in FIG. 9, the element frame 19 is rotated in the direction of arrow B and lowered downward in an inclined state, and after the stepped bolt 39 passes the dead center, the element frame 19 is in the locked state. is canceled. Then, attach the flange head 44 of the stepped bolt 43 to the slider 3.
8 from the removal hole 42, and insert the head bolt 47 through the support shaft entrance 46a formed on the lower surface of the casing 16 through the groove 4.
6, the element frame 19 can be removed in one operation.

In the embodiment described above, by employing the headed bolts 47 and stepped bolts 43 as support mechanisms, the element frame 19 housing a plurality of dust collecting elements 20 therein can be removed from the casing 16 from the outer frame. 3, all the dust collection elements 20 can be removed and replaced in one removal operation. Therefore, the efficiency of maintenance work is greatly improved and labor is reduced.

Moreover, in the embodiment described above, the head bolt 47 is fixed to both ends of one side of the element frame 19 via the latch 45, and the bolt 47 is fixed to the other side of the element frame 19 via the stepped bolt 39. A slider 38 that is movably supported, and a step that rotatably, slidably, and detachably supports the slider 38 and constitutes an element frame locking toggle mechanism together with the stepped bolt 39 and headed bolt 47. Since the attached bolt 43 is employed, the element frame 19 can be taken out from the casing 16 in a tilted state as shown in FIG. Therefore, even if there is insufficient work space to remove the dust collection element 20 because the furniture 57 or the like is placed directly below the air purifier, the element frame 19 can be removed efficiently and maintenance work can be made more efficient. be able to.

Moreover, in the embodiment described above, the stepped bolt 43, which is the fulcrum shaft, the stepped bolt 39, and the head bolt 47 constitute the element frame locking toggle mechanism, so there is no locking mechanism. The element frame 19 can be locked without using. Therefore, since the device is simplified, production is facilitated and manufacturing costs are also reduced.

Furthermore, in the embodiment described above, the groove 46 is formed in the casing 16 to prevent the element frame 19 from coming out of engagement with the head bolt 47 when the element frame 19 rotates.
This prevents the element frame 19 from being accidentally dropped when being removed. Therefore, the safety of maintenance work is improved. Furthermore, in the embodiment described above, since the support shaft opening 46a of the groove 46 is formed on the lower surface of the casing 16, the head bolt 47 can be engaged and disengaged from the groove 46 while visually observing the support shaft entrance 46a from below. Can be done. Therefore, the work of attaching and detaching the element frame 19 becomes easy and quick.

Next, from the installed state shown in FIG.
If it is desired to replace the 0 individually, first remove the stopper 8, rotate the suction grille 6 in the direction of arrow A, and open the suction port 5 of the outer frame 3. Next, after removing the first stopper 28a, press the engaging element 31 (FIG. 2) of the second stopper 28b with your fingers to release the locked state of the dust collection element 20, and then lower it downward. Thereby, as shown in FIG. 10, the dust collection element 20 can be replaced individually from the air cleaner. Here, in this embodiment, as explained in FIG. 3, the stopper 28a is held by the screw 29 passing through the long hole N so that it can move forward and backward in an oblique direction with respect to one side of the opening edge of the accommodation space 27. Therefore, the plate-shaped handle 20a of the dust collection element 20 can be attached or detached by simply grasping and operating the gripping portion T formed at one end of the stopper 28a with a finger. Therefore, the dust collection elements 20 are individually mounted on the element frame 19.
When taking out the dust collecting element 20 from the dust collecting element 20, it is possible to operate the stopper 28a with the other hand while holding the dust collecting element 20 with one hand, which has the advantage that attachment and detachment operations are facilitated.

In the embodiment shown in FIG. 11, one end of the slider 38 is connected to the casing 1 using a stepped bolt 39 as a rotation shaft.
6, and a stepped bolt 43 serving as a fulcrum shaft is fitted into a sliding groove 41 of the slider 38. Also in the structure of FIG. 11, the element frame 19
The element frame can be taken out from the casing 16 in a tilted state, and the stepped bolt 43, which is the fulcrum shaft, constitutes a toggle mechanism for locking the element frame together with the stepped bolt 39 and the head bolt 47. The element frame 19 can be locked without using a mechanism. Therefore, since the device is simplified, production is facilitated and manufacturing costs are also reduced.

In embodying the present invention, it goes without saying that various design changes may be made within the scope of the claims.

[0038]

[Effects of the Invention] As explained above, according to the present invention, by employing a support mechanism, the element frame housing a plurality of dust collection elements therein can be attached and detached from the casing through the outer frame. Therefore, all dust collection elements can be removed and replaced in one removal operation. Therefore, the efficiency of maintenance work is greatly improved and labor is reduced.

Further, according to the present invention, a support shaft is fixed to both ends of one side of the element frame, and a rotary shaft is rotatably attached to either the other side of the element frame or the casing. It employs a supported slider and a fulcrum shaft that rotatably, slidably, and detachably supports the slider and constitutes a toggle mechanism for locking the element frame together with the rotation shaft and support shaft. , the element frame can be taken out from the casing with it tilted. Therefore, even if you cannot secure enough work space to remove the dust collection element because furniture etc. are placed directly under the air purifier,
The element frame can be removed efficiently and maintenance work can be made more efficient.

Further, according to the present invention, the support shaft, the rotation shaft,
Since the fulcrum shaft and the fulcrum shaft constitute the element frame locking toggle mechanism, the element frame can be locked without using any locking mechanism. Therefore, since the device is simplified, production is facilitated and manufacturing costs are also reduced. Furthermore, according to the present invention, the casing is provided with a groove that prevents the element frame from coming out of engagement with the support shaft when it rotates around the support shaft.
The safety of maintenance work is improved by preventing the element frame from being accidentally dropped when removing it.

Furthermore, according to the present invention, since the support shaft entrance/exit of the groove is formed on the lower surface of the casing, the support shaft can be engaged and disengaged from the groove while visually observing the support shaft entrance/exit from below. Therefore, the work of attaching and detaching the element frame becomes easy and quick.

[Brief explanation of the drawing]

FIG. 1 is a schematic cross-sectional view showing one embodiment of the present invention.

FIG. 2 is an exploded perspective view of the element frame in the embodiment of FIG. 1;

FIG. 3 is a front view of the stop in the embodiment of FIG. 1;

FIG. 4 is a perspective view of the support shaft portion of FIG. 2;

FIG. 5 is an exploded perspective view of an element frame and a filter frame in the embodiment of FIG. 1;

FIG. 6 is a perspective view showing an assembled state of the element frame and filter of FIG. 5;

FIG. 7 is a schematic cross-sectional view of the element frame and filter in FIG. 6;

FIG. 8 is a perspective view showing the embodiment of FIG. 1 in use.

FIG. 9 is a perspective view showing the embodiment of FIG. 1 in use.

FIG. 10 is a perspective view showing the embodiment of FIG. 1 in use.

FIG. 11 is an exploded perspective view of an element frame in another embodiment.

[Explanation of symbols]

1 Ceiling space 2 Ceiling plate 3 Outer frame 6 Suction grill 16 Casing 19 Element frame 20 Dust collection element 38 Slider 39 Stepped bolt (rotation shaft) 43
Stepped bolt (fulcrum shaft) (support mechanism) 46
groove

Claims (1)

[Claims] Claim 1: An outer frame (3) fixed to the opening edge of a ceiling plate (2) that partitions a ceiling space (1), and a suction grill (6) arranged in the outer frame (3) so as to be openable and closable. and suction grill (6
) and a downwardly open casing (16) disposed in the ceiling space (1) facing the casing (16).
) A plurality of dust collection elements (20) housed inside the
In the ceiling-embedded air cleaner, the plurality of dust collection elements (20
) which accommodates the element frame (1
9) and a support mechanism that supports the element frame (19) so that it can be attached and detached from the casing (16) through the outer frame (3), and the support mechanism It is rotatably supported via a support shaft (47) fixed to both side ends and a rotation shaft (39) on either the other side of the element frame (19) or the casing (16). slider (
38), and a fulcrum shaft that rotatably, slidably, and detachably supports the slider (38) and constitutes an element frame lock toggle mechanism together with the rotation shaft (39) and support shaft (47). (43), and the casing (16) includes the element frame (19).
When the support shaft (47) rotates around the support shaft (47), the support shaft (47) is rotatably and detachably engaged while preventing the disengagement from the support shaft (47). A groove (46) is provided to prevent the support shaft from opening (46).
6a) is formed on the lower surface of the casing (16).