JP4424835B2 - Air cleaner - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an air cleaner in which an opening for taking in air to be purified in a main body case is covered with an intake plate in which a number of holes are formed by punching.
[0002]
[Prior art]
As a conventional air cleaner, an opening in which air to be purified is formed in the main body case is formed on the front surface of the main body case, and this opening is covered with a metal air intake plate so as to allow ventilation.
[0003]
The main body case and the intake plate are assembled by inserting attachment pieces protruding from the peripheral edge of the intake plate into engagement holes formed in the frame body, bending them, and engaging the back surface of the frame body.
[0004]
However, since the intake plate is formed by cutting a punching metal in which a large number of holes are formed by punching the entire surface into a predetermined shape, as shown in FIG. 8 and the edge 51 is formed at the tip 34 of the mounting piece 33. Therefore, when the mounting piece 33 is locked to the engagement hole, the edge 51 of the tip 34 of the mounting piece 33 hits the frame body and is damaged. Or, when the attachment piece 33 is bent, the hand may hit the edge 51 of the tip 34 of the attachment piece 33 to cause injury.
[0005]
[Problems to be solved by the invention]
An object of the present invention is to provide an air cleaner that can prevent the main body case from being damaged or being injured by the intake plate when the intake plate is attached to the main body case.
[0006]
[Means for Solving the Problems]
The first means for solving the above-mentioned problem is that an opening for taking in air to be purified into the main body case is formed on one side surface of the main body case, and this opening is covered with an air intake plate in which many holes are formed. In the machine, a mounting piece projecting outward from the periphery of the air intake plate is formed on the intake plate, and the mounting piece is inserted through a fastening hole provided around the opening on one side of the main body case, and the back surface of the main body case The plurality of holes are formed so as not to exist at the tip of the mounting piece.
[0007]
Thereby, an edge is not formed at the tip of the mounting piece, and even when the tip of the mounting piece hits when inserting from one side, it is possible to prevent the one side from being damaged. In addition, there is no risk of injury even if a hand hits the tip of the mounting piece when locking to the back surface.
[0008]
The said structure WHEREIN: It is desirable for the said attachment piece to be bent and latched on the said hole or its vicinity.
[0009]
Thereby, the intensity | strength of a bending part can be weakened and an attachment piece can be bent easily.
[0010]
Further, the peripheral edge of the intake plate is bent toward the one side surface, and a stepped portion where the peripheral edge is fitted is formed on the one side surface.
[0011]
Thereby, while being able to reinforce the peripheral edge of an intake plate, this peripheral edge can be located in a step-down part and it can prevent that a hand touches.
[0012]
Further, it is desirable that a sheet having air permeability is provided so as to cover the back surface of the intake plate, and this sheet is interposed between the peripheral edge of the intake plate and the stepped surface.
[0013]
As a result, the inside of the main body can be prevented from being seen through the hole formed in the intake plate, and the peripheral edge of the intake plate can be prevented from coming into contact with the stepped surface, and the intake plate vibrates due to vibration during operation. It is possible to prevent chatter noise between the intake plate and the stepped surface.
[0014]
The sheet preferably has a dust collecting function.
[0015]
Thereby, the said sheet | seat can be utilized as a pre filter.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention are shown in FIGS. 1 to 6 and will be described with reference to these drawings.
[0017]
The air purifier main body case 1 includes a front cover 2, a rear cover 4 having a grill-like discharge port 3 formed on one side of the upper surface, and an upper cover 7 having various operation buttons 5 and a display unit 6 formed therein. Is formed. The front cover 2 is provided with an intake plate 9 having a large number of intake holes 8 formed on the entire surface, and the front cover 2 has a large grid so that outside air is sucked into the main body through the holes 8. A shaped opening 10 is formed.
[0018]
The main body case 1 is divided into front and rear by a partition plate 11, and a filter device 12 for collecting and deodorizing air is built in between the partition plate 11 and the front cover 2, and between the partition plate 11 and the rear cover 4. Has a built-in blower 15 composed of a motor 13 and a fan 14 rotated by the motor. The motor 13 is attached to the partition plate 11. The fan 14 is surrounded by a spiral fan casing 16 that protrudes integrally from the rear cover 4, and the inside of the fan casing 16 communicates with the discharge port 3.
[0019]
When the blower 15 is driven, outside air is sucked through the hole 8, and the sucked outside air is collected and deodorized and purified by the filter device 12, passes through the fan casing 16, and is discharged from the discharge port 3. Released.
[0020]
The filter device 12 includes a pre-filter 17, a dust collection filter 18, and a deodorizing filter 19.
[0021]
The prefilter 17 includes a lattice-shaped synthetic resin frame body 20 and a filter material 21 made of a nonwoven fabric held on the frame body 20.
[0022]
The dust collection filter 18 is formed by processing an electret polypropylene nonwoven fabric into a folded shape and fixing the periphery to a paper frame.
[0023]
The deodorizing filter 19 is made of paper, a first deodorizing layer composed of cellulose beads 22 impregnated with polyphenols, a second deodorizing layer composed of a nonwoven fabric layer 23 impregnated with citric acid and chemically deodorizing ammonia, and paper. The honeycomb structure includes a third deodorizing layer formed by containing activated carbon particles 24, and a paper frame 25 that fixes the outer periphery of the first to third deodorizing layers. The activated carbon particles 24 are composed of a plurality of types impregnated with components corresponding to basic gas, neutral gas, and acidic gas.
[0024]
The deodorizing filter 19 and the dust collection filter 18 are stored in a filter storage chamber 26 formed in the partition plate 11 so that the deodorizing filter 19 is on the leeward side, and the prefilter 17 is disposed on the windward side of the dust collection filter 18.
[0025]
Then, the outside air sucked from the hole 8 serving as the air inlet is first caught by the pre-filter 17, and then dust is removed by the dust collecting filter 18 and flows into the deodorizing filter 19. In the deodorizing filter 19, first, a specific odor mainly a body odor called an aging odor is removed by the cellulose beads 22, and then an ammonia component is chemisorbed by the nonwoven fabric layer 23. Finally, the remaining odorous component is removed by the activated carbon particles 24 and exits from the discharge port 3. Here, the non-woven fabric layer 23, which is the second deodorizing layer, is made compatible with ammonia with an emphasis on the removal of the ammonia component. It can also be.
[0026]
The front cover 2 includes a frame body 27 having a large grid-like opening 10, an intake plate 9 covering the opening 10, and a seat 28 provided on the back side of the intake plate 9.
[0027]
Locking claws (not shown) that are detachably locked to the partition plate 11 by operation of the push buttons 29 are formed on the left and right sides of the frame body 27. A stepped portion 30 larger than the opening 10 is formed on the front surface, and a plurality of engaging holes 31 are formed on the periphery of the stepped portion 30.
[0028]
A large number of holes 8 are formed on almost the entire surface of the intake plate 9, and these holes 8 serve as intake ports. Further, the peripheral edge 32 of the intake plate 9 is bent toward the frame body 27 side, and is formed in a shape that can be fitted to the stepped portion 30 of the frame body 27.
[0029]
Attaching pieces 33 that protrude outwardly and are inserted into the engagement holes 31 are formed at a plurality of locations on the left and right and up and down. As shown in FIG. 6, the mounting piece 33 has a hole 8 formed on the bent portion (the chain line X in the drawing), thereby reducing the strength of the bent portion X. This air intake plate 9 is formed on a stainless steel plate not only on the entire surface but on a substantially rectangular range between the bent portions X of the left and right mounting portions 33 by punching, and then the outer periphery has a predetermined shape. The attachment piece 33 is formed integrally. Thereby, the hole 8 by punching does not reach ( does not exist) at the tip 34 of the mounting piece 33, and the edge 51 as shown in FIG.
[0030]
The sheet 28 is made of breathable polyurethane and can remove large particles of dust. The seat 28 is formed in a size close to or in contact with the periphery of the stepped portion 30, and is sandwiched between the periphery 32 of the intake plate 9 and the stepped portion 30. (See Figure 4)
The front cover 2 configured as described above places the seat 28 on the stepped portion 30 of the frame body 27, inserts the attachment piece 33 of the intake plate 9 into the engagement hole 31 of the frame body 27, and It is folded and locked on the back side of and assembled.
[0031]
At this time, since the seat 28 is interposed between the peripheral edge 32 of the intake plate 9 and the stepped-down portion 30, the intake plate 9 vibrates when vibration during operation is transmitted to the front cover 2. It is possible to prevent chatter noise between the frame body 27 and the frame body 27. Further, since the peripheral edge 32 can be prevented from hitting the stepped portion 30, the stepped portion 30 can be prevented from being damaged by the peripheral edge 32.
[0032]
In addition, as described above, since the hole 8 by punching does not reach the tip 34 of the mounting piece 33, no edge is formed at the tip 34 of the mounting piece 33, and the mounting piece 33 is inserted into the engagement hole 31. Even if it hits the stepped part 30 when doing, it can prevent being damaged. Furthermore, when the attachment piece 33 inserted into the engagement hole 31 is bent and locked, even if a hand hits the tip 34 of the attachment piece 33, there is no injury.
[0033]
Further, when the attachment piece 33 is bent, it is bent at the bent portion X on the hole 8 which is weak in strength, so that it can be easily bent and the assembling workability can be improved.
[0034]
Since the front cover 2 assembled in this manner has the peripheral edge 32 of the air intake plate 9 located in the stepped-down portion 30, the hand does not touch the peripheral edge 32 and can be prevented from being injured. Further, by covering almost the entire back surface of the suction plate 9 with a sheet 28 having air permeability, it is possible to suck into the main body case 1 and prevent the inside of the main body case 1 from being seen through the hole 8 by punching. And the appearance can be improved. Furthermore, since the sheet 28 is made of polyurethane having a dust collecting function, it can be used as a prefilter.
[0035]
In the above embodiment, the hole 8 by punching is provided in the bent portion of the mounting piece 33, but the hole 8 may be provided in the vicinity of the bent portion.
[0036]
Further, although the intake plate 9 is provided on the front cover 2 on the front surface of the main body case 1, it may be provided on the other side surface of the main body case.
[0037]
【The invention's effect】
According to the first aspect of the present invention, when the intake plate is attached to one side surface of the main body case, the main body case can be prevented from being damaged at the tip of the mounting piece, and the appearance can be prevented from being damaged. In doing so, even if a hand or the like hits the tip of the mounting piece, it can be safely performed without being injured.
[0038]
According to the second aspect of the present invention, since the strength of the bent portion can be reduced, it is possible to make it easier to bend when the attachment piece is bent and locked, and workability can be improved.
[0039]
According to the third aspect of the present invention, since the peripheral edge of the intake plate is located in the stepped portion and can be prevented from being touched by the hand, there is no injury and safety can be improved.
[0040]
According to the fourth aspect of the present invention, it is possible to prevent the inside of the main body from being seen through the hole by punching, to improve the appearance, and the peripheral edge of the intake plate does not directly contact the stepped surface, so that the stepped surface is Can prevent injury. It is also possible to prevent chattering noise between the intake plate and the stepped-down portion even if it vibrates during operation.
[0041]
According to claim 5 of the present invention, the sheet provided on the back surface of the intake plate can also be used as a prefilter.
[Brief description of the drawings]
FIG. 1 is a front view of an air cleaner showing an embodiment of the present invention.
FIG. 2 is a side longitudinal sectional view of the air cleaner.
FIG. 3 is a cross-sectional view of the air cleaner.
4 is an enlarged view of a part A in FIG. 3;
FIG. 5 is an enlarged view of a portion B in FIG. 3;
6 is an enlarged view of a main part in the vicinity of the mounting piece in FIG. 5;
FIG. 7 is an enlarged view of a main part in the vicinity of a mounting piece of a conventional air cleaner.
[Explanation of symbols]
8 holes (holes by punching)
9 Intake plate 10 Opening 28 Sheet 30 Stepped portion 31 Engagement hole 32 Peripheral edge 33 of intake plate Attachment piece 34 Tip of attachment piece X Folding portion of attachment piece

Claims (5)

Forming an opening for taking air purifying in the body case to one side of the body case, the air cleaner covered by the suction plate to the opening a number of holes formed in the suction plate, outward from the periphery the attachment piece that protrudes is formed in, as well as locking the attachment pieces on the back surface of the body case is inserted from the engaging hole formed in the periphery of said opening in one side surface of the main body case, the number of holes, the An air purifier formed so as not to exist at the tip of the mounting piece. The air cleaner according to claim 1, wherein the mounting piece is bent and locked on or near the hole. 3. The air cleaner according to claim 1, wherein a peripheral portion of the air intake plate is bent toward the one side surface, and a stepped-down portion is formed on the one side surface to fit the peripheral edge. The air according to claim 3, wherein a sheet having air permeability is provided so as to cover a back surface of the intake plate, and the sheet is interposed between a peripheral edge of the intake plate and the stepped surface. Cleaner. The air cleaner according to claim 4, wherein the sheet has a dust collecting function.

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