JPH04200611A - Ceiling-mounted air purifier - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a ceiling-embedded air cleaner, and more specifically, a downwardly open casing placed in a ceiling space, and a casing housed inside the casing. A plurality of dust collecting elements are provided.

<Prior art> Generally, this type of air purifier is
It is disclosed in Publication No. 66. In this structure, an outer frame is fixed to the opening edge of a ceiling plate that divides 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.

The plurality of dust collection elements are individually and removably housed in a housing space provided within the casing.

<Problems to be Solved by the Invention> In this way, in the above air purifier, the plurality of dust collecting elements are individually detachably housed in the housing space provided in the casing. When replacing an element, climb up the stepladder and remove one dust collection element, then go down to the bottom of the stepladder, place the collected dust collection element in the designated place, and then collect the remaining dust collection elements. I had to go up and down the stepladder repeatedly until Therefore, a lot of effort was required for maintenance work of the dust collection element.

Also, is it possible to have one person remove the dust collection element on a stepladder, and another person to carry the recovered dust collection element from under the stepladder?1, but that method is not preferable because it requires a lot of labor. .

Additionally, if there is furniture such as a locker 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 problems, and includes: an element frame that accommodates a plurality of dust collection elements in a casing in a detachable manner;
An object of the present invention is to provide an improved ceiling-embedded air cleaner in which multiple dust collection elements can be removed at one time by providing a support mechanism that supports the dust collection elements so that they can be attached and detached from the casing through the inside of the outer frame. It is said that

Furthermore, the present invention employs a latch fixed to one end of the element frame and a slider rotatably supported at the other end via a rotation shaft, and the slider is engaged with the engagement groove of the latch. a support shaft that supports the latch in a detachable and rotatable manner, and a toggle mechanism for locking the element frame together with the rotation shaft and the support shaft that supports the slider in a rotatable, slidable, and detachable manner; By adopting a support mechanism with a fulcrum shaft that makes up the element frame, the element frame can be tilted and taken out. The purpose is to provide a built-in air purifier.

Furthermore, an object of the present invention is to provide an improved ceiling-embedded air cleaner that prevents the element frame from being accidentally dropped, in addition to the above improvements, by providing a protrusion in the engaging groove of the latch. It is said that

Means for Solving the Problems> In order to solve the above problems, the ceiling-embedded air cleaner of the present invention includes an outer frame fixed to the opening edge of a ceiling plate that partitions a ceiling space, and a A suction grill that can be opened and closed freely,
In a ceiling-embedded air cleaner comprising a downwardly open casing disposed in the ceiling space facing a suction grill, and a plurality of dust collection elements housed inside the casing, the casing An element frame that accommodates the plurality of dust collection elements individually and removably, and a support mechanism that supports the element frame so that it can be installed and removed from the casing through the outer frame, the element frame is , comprising a latch fixed to one end thereof, and a slider rotatably supported at the other end via a rotation shaft, and the support mechanism engages with the engagement groove of the latch to rotate the latch. A support shaft that supports the latch in a detachable and rotatable manner, and a rotatable and slidable support shaft for the slider.
and a fulcrum shaft that is detachably supported and constitutes a toggle mechanism for locking the element frame together with the rotation shaft and the support shaft, and the element frame rotates around the support shaft in the engagement groove of the latch. The device is characterized by being provided with a protrusion that prevents the device from coming out of engagement with the support shaft during movement.

Effect> 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.

Further, according to the present invention, when the element frame rotates, the support shaft is engaged with the protrusion formed in the engagement groove.

<Example> Hereinafter, embodiments will be described in detail with reference to the accompanying drawings showing examples.

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 seal 9 is provided at the upper part of the outer peripheral edge of the outer frame 3 that defines the discharge port 4.
A flat, helical-shaped housing 10 is placed therebetween. The 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. A motor 15 of a fan 14 is fixed to the center of the reinforcing plate 13, and a suction grill It is facing 6.

The casing 16 is placed on the upper end of the periphery of the outer frame 3 that defines the suction port 5 with a seal 18 interposed therebetween. An element frame 19 is removably housed inside the casing 16, and within this element frame 19, for example, three dust collection elements 20 (described in detail later) are installed.
(Only one is shown in FIG. 1) They are individually removably housed. The casing 16 is provided with as many anode power terminals 22 and ionization power terminals 23 as there are corresponding dust collecting elements 20 fixed to the insulator 21. The anode connection terminal 24 and the ionization connection terminal 25 are engaged with each other.

Electricity supplied to each power terminal 22.23 from a power supply (not shown) is supplied to the dust collection element 20 via each connection terminal 24.25, so that each dust collection element 2
0 is configured to perform a dust collection function.

As shown in detail in FIG. 2, the element frame 19 is a rectangular frame member with a rectangular plane, and inside it is a partition plate 2.
A housing space 27 divided into three equal parts by 6 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 make each dust collection element 20 individually attachable and detachable,
Each housing space 27 at the lower edge of the element frame 19
A first stop 28a and a second stop 28b facing each other at right angles to the longitudinal direction are provided at locations corresponding to the longitudinal direction.

The first stop 28a has an oval plane,
Its base end portion is rotatably supported by a screw 29 at the lower end of the element frame 19. And screw the other end with screw 29
It is configured so that it can be engaged with and disengaged from the lower surface of the dust collecting element 20 by rotating around the .

The second stop 28b includes a rectangular base plate 3o and an engager 3 rotatably supported in an oblique position with respect to the base plate 30.
1, a screw 32 that pivotally supports the engaging element 31, a coiled spring 33 collinear with the screw 32, a cover 34 that covers the proximal end of the coiled spring 33 and the engaging element 31, and the cover 34 and the substrate 30. and a screw 32a collinear with the lower edge of the element frame 19.

A locking portion 35 is cut and raised in the substrate 30, and by locking the base end portion of the engager 31 to this locking portion 35,
The rotational position of the engaging element 31 in the protruding direction is restricted.

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 33a engages with the stop 36 of the engaging element 31, and the other end 33b engages with the engaging part 35, thereby urging the engaging element 31 in the projecting direction.

To accommodate the dust collection element 20 in the accommodation space 27, first, with the first stopper 28a opening the accommodation space 27, the engager 31 of the second stopper 28b is removed from the stopper 36. Press down with your fingers against the elastic force of the coiled spring 33. Next, after the dust collecting element 20 is housed, the fingers holding the engaging element 31 are released, and finally the first stopper 28a is engaged with the lower surface of the dust collecting element 20.

In order to rotatably support the element frame 19,
On the upper surface of one end of the element frame 19, a pair of projections 37 (only one is shown) is fixed in the longitudinal direction.
A base end portion of a slider 38 is rotatably supported by each protrusion 37 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 g (FIG. 1), and has an integrally extending downwardly protruding portion 40 at its free end. is formed. The slider 38 has a sliding groove 41 extending in the longitudinal direction, and a sliding groove 41 extending in the longitudinal direction.
A detachment hole 42 is formed continuously in the overhang portion 40 . 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 provided with a flange-shaped head 44 (shown only in FIG. 2), and this flange-shaped head 44 is
The dimensions are such that it can be attached and detached only through the detachment hole 42 of the slider 38.

Furthermore, in order to rotatably support the element frame 19, latches 45 are fixed to the side surface of the other end of the element frame 19 in pairs in the longitudinal direction (only one is shown in FIG. 2). .

As shown in FIGS. 3 and 4, the latch 45 is a hook-shaped sheet metal member, and the fixing portion 4 is bent at right angles to the main body 45a.
5b is integrated.

The main body 45a is provided with an engagement groove 46 that opens downward, and the main body 45a can be attached to, detached from, and rotated freely through the engagement groove 46 on the support shaft 47 fixed to the casing 16 described in FIG. Supported.

The support shaft 47, the stepped bolt 39, and the stepped bolt 43 each constitute a fulcrum, thereby forming a toggle mechanism for locking the element frame 19 in the state shown in FIG.

Furthermore, in this embodiment, as shown in FIG. 3, a protrusion 48 that prevents the latch 45 from falling off the support shaft 47 when the element frame 19 rotates, which will be described later, or a lower end of the engagement groove 46 is provided. It is formed in one piece.

As shown in FIG. 4, the fixing part 45b has four vertically opposed pairs of screw holes, and these screw holes 49
The element frame 19 is attached by a screw (not shown) passing through the
A latch 45 is integrally fixed to the side surface of the other end.

As shown in detail in FIGS. 5 to 7, a filter frame 5 having an angle frame structure is provided on the upper side of one element frame.
0 is fixed by a bolt 51, and the filter frame 50
A deodorizing filter 52 (shown only in FIG. 7) is accommodated in a position 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 integrally fixed to the element frame 19 by the bolts 51 . As a result, as shown in FIG. 6, the deodorizing filter 52 and the dust collection element 20 form a space 54 therebetween for the air that has passed through the dust collection element 2o to diffuse. It constitutes an integral framework structure.

As shown in detail in FIG. 7, the lower edge of the filter frame 50 has an inward flange 5 that supports the lower edge of the deodorizing filter 52.
5 are integrally formed.

The width W of the filter frame 50 is formed to be slightly wider than the width of the deodorizing filter 52, and an elastic cushion 56 made of, for example, polyurethane is interposed between the side end surface of the deodorizing filter 52 and the inner surface of the filter frame 50. equipped. 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 the arrow X, and then push it from the inside of the inward flange 55 as shown by the arrow Y. By dropping it downward, 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 usage state 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. Further, the air sucked into the interior passes through the deodorizing filter 52 from the dust collection element 20 through the space 54, and is moved to the casing 16 by the fan 14.
It reaches the inside of the housing 10 through the skylight 17, and is further returned indoors through the discharge port 4 of the outer frame 3, as shown in FIG.

In the embodiment described above, the fan 1 which is the air suction source
A deodorizing filter 52 is disposed between the deodorizing filter 52 and the dust collecting element 20, and the deodorizing filter 52 and the dust collecting element 20 have an integral framework structure. Since a space 54 is formed in which the air that has passed through the element 20 is diffused, the air that has passed through the dust collection filter 20 diffuses and fills the space 54.
A portion thereof overflows into the casing 16 from between the legs 53 and 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.
Since the entire deodorizing filter 52 can be used evenly, 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 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, element frame 1
9 by hand and rotate it downward around the support shaft 47 as shown by arrow B, the stepped bolt 39 as a rotation shaft
rotates downward around the support shaft 47, and the stepped bolt 43 as a fulcrum shaft rotates around the stepped bolt 39.
The slider 38 rotates upward using the fulcrum as a fulcrum. 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 has passed the dead center, the element frame 19 is locked. The condition is cleared. and stepped bolt 4
By removing the flange head 44 of No. 3 from the removal hole 42 of the slider 38 and removing the latch 45 from the support shaft 47, the element frame 19 can be removed in one operation.

In the embodiment described above, the support shaft 4 as the support mechanism
7 and stepped bolts 43, the element frame 19 housing a plurality of dust collection elements 20 therein can be attached and detached from the casing 16 through the outer frame 3. All dust collection elements 20 can be removed and replaced. Therefore, the efficiency of maintenance work is greatly improved and labor is reduced.

Moreover, in the embodiment described above, the latch 45 is fixed to one end of the element frame 19, and the slider 38 is rotatably supported at the other end via the stepped bolt 39, and the latch 45 is attached and detached as a support mechanism. and a support shaft 47 that rotatably supports the slider 38, and a support shaft 47 that rotatably supports the slider 38.
Since the element frame 19 is detachably supported by a stepped bolt 43, the element frame 19 can be taken out from the casing 16 in an inclined state as shown in FIG. Therefore, even if there is insufficient work space for removing the dust collection element 20 because the furniture 57 or the like is placed directly under 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 above-described embodiment, since the element frame locking toggle mechanism is configured together with the stepped bolt 43 serving as the fulcrum shaft, the stepped bolt 39, and the support shaft 47, the element frame locking mechanism is not used. One can be locked. Therefore, since the device is simplified, production is facilitated and manufacturing costs are also reduced.

Furthermore, in the above-described embodiment, the engagement groove 46 of the latch 45 is provided with a protrusion 46 that prevents the element frame 19 from coming out of engagement with the support shaft 47 when the element frame 19 rotates. There is no chance of accidentally dropping the frame 19 when removing it. Therefore, the safety of maintenance work is improved.

Next, when it is desired to individually replace the dust collecting element 20 from the mounted state shown in FIG. 1, first, the stopper 8 is removed, the suction grille 6 is rotated in the direction of the arrow, and the suction port 5 of the outer frame 3 is opened. Next, after removing the first stopper 28a, press the engager 31 (FIG. 2) of the second stopper 28b with your fingers, and then remove the dust collecting element 20.
All you have to do is release the lock state and then lower it.

Thereby, as shown in FIG. 10, the dust collection element 20 can be replaced individually from the air cleaner.

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

<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, the latch is fixed to one end of the element frame, and the slider is rotatably supported at the other end via the rotation shaft, and the latch is supported as a support mechanism in a detachable and rotatable manner. The element frame can be taken out from the casing in an inclined state because it uses a support shaft that supports the slider and a stepped bolt that supports the slider in a rotatable, slidable, and removable manner. Therefore, even if there is insufficient work space to remove the dust collection element due to furniture placed directly under the air purifier, the element frame can be removed efficiently and maintenance work can be made more efficient. .

Furthermore, according to the present invention, since the fulcrum shaft constitutes the element frame locking toggle mechanism together with the rotation shaft and the support shaft, the element frame can be locked without using any locking mechanism. Therefore, since the device is simplified, production becomes easier and manufacturing costs are also reduced.

Furthermore, according to the present invention, since the engagement groove of the latch is provided with a protrusion that prevents the element frame from disengaging from the support shaft when it rotates around the support shaft, the support shaft is , when the element frame rotates, it is engaged with a protrusion formed in the engagement groove. Therefore, when removing the element frame, the element frame will not be accidentally dropped, improving the safety of maintenance work.

[Brief explanation of the drawing]

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 latch in the embodiment of FIG. 1, and FIG. Figure 4 is a side view of the latch shown in Figure 3, Figure 5 is an exploded perspective view of the element frame and filter frame in the embodiment shown in Figure 1, and Figure 6 is an assembled state of the element frame and filter in Figure 5. The seventh factor is a schematic sectional view of the element frame and filter in FIG. 6, and FIGS. 8 to 10 are perspective views showing the state of use of the embodiment of FIG. 1. 1... Ceiling space, 2... Ceiling board, 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...
Engagement groove, 47... Support shaft (support mechanism), 48... Projection. Patent applicant: Daikin Industries, Ltd. Agent: Takafumi Watanabe (and 2 others) 46 =-Engagement groove 47...Support shaft (support mechanism) 48...Protrusion Fig. 6 Fig. 4 Fig. 19...・Element frame 46...Engaging portion 48...Protrusion 52...De-hulling filter, Fig. 5 1...Ceiling space 6...Outer frame 6...Suction grill 19...Element frame 20... Dust collection element Fig. 7 Fig. 8 1... Ceiling space 6... Outer frame 6... 1 suction grill Element frame 20... Dust collection element 38... Slider Fig. 9 1-Ceiling space 3-Outer frame 6 Suction grill 19/Element frame 20...Collection element 38/Slider Figure 10 Procedures Amendment (method) Ceiling-mounted air purifier 3, case of person making amendment Relationship with Patent applicant name (285) Daikin Industries, Ltd. Name
(9270) Patent attorney Takashi Watanabe Literature
Continuing amendment (voluntary) April 11, 1991 1990 Patent Application No. 334679 2 Name of the invention Ceiling-mounted air purifier 3 Relationship with the case by the person making the amendment Name of patent applicant Title (285 ) Daikin Industries, Ltd. 1...
Ceiling space 3...Outer frame 6...Suction grill 19...Element frame 20...Dust collection element 46...Engaging portion 48...Protrusion 52°...Deodorizing filter Fig. 8

Claims (1)

[Claims] 1. An outer frame (3) fixed to the opening edge of the ceiling plate (2) that partitions the ceiling space (1), a suction grill (6) arranged in the outer frame (3) so as to be openable and closable, and a suction A downwardly open casing (16) disposed in the ceiling space (1) facing the grill (6), and a plurality of dust collection elements (20) housed inside the casing (16). In the ceiling-embedded air cleaner equipped with the above casing (1
6) an element frame (19) in which the plurality of dust collection elements (20) are individually and detachably housed;
The element frame (19) is attached to the casing (16).
), and the element frame (19) is provided with a support mechanism (43) (47) that supports the element frame (19) so that it can be attached and removed through the outer frame (3), and the element frame (19) has a latch (47) fixed to one end thereof.
45) and a slider (38) rotatably supported at the other end via a rotation shaft (39), and the support mechanism is configured to engage the engagement groove (46) of the latch (45). A support shaft (47) that engages and supports the latch (45) in a detachable and rotatable manner.
), and a fulcrum shaft that rotatably, slidably, and detachably supports the slider (38) and constitutes an element frame locking toggle mechanism together with the rotation shaft (39) and support shaft (47). (43) and the above latch (45
) in the engagement groove (46) of the element frame (1).
The protrusion (4) prevents the projection (4) from disengaging from the support shaft (47) when the support shaft (47) rotates around the support shaft (47).
8) A ceiling-embedded air cleaner.