JP2002143793A - Air-jet cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air-jet cleaner which is simple and compact in structure, prevents the scattering of dust separated from an object to be cleaned, improves versatility by making the structure be able to deal with objects different in structure, reduces initial costs by the simplification of the structure and running costs by the decrease of power consumption, and facilitates maintenance. SOLUTION: The air-jet cleaner has a housing 1, a support plate which is formed in the housing 1 and sets the object 9, a nozzle 4 for spraying air on the object 9, and a blower 12 which sucks air in the housing 1 to send it to the nozzle 4 through a duct 2. The nozzle 4 is fitted to the duct 2, the duct 2 and the blower 12 are fixed to keep a mutual relationship, and the nozzle 4 and the support plate can be displaced mutually.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air jet cleaner for removing dust on the surface of an article by blowing air.

[0002]

2. Description of the Related Art For example, it is necessary to remove dust adhering to the surface of a lamp cover of a tail lamp for an automobile during transportation from a manufacturing process to an assembling process or during storage. An air jet cleaner is used to clean such a curved lamp cover surface.

A conventional air jet cleaner for a lamp cover has a support plate on which a lamp cover is mounted in a housing serving as a cleaner main body, and has a lamp cover set on the support plate sandwiched between the front surface and the rear surface thereof. A hose for supplying compressed air is provided, and a plurality of nozzles are attached to each hose. Compressed air is blown from these nozzles to blow off and remove dust on the surface of the lamp cover. Each nozzle has a fixed length protruding from the hose according to the shape of the lamp cover.

A plurality of support rods are projected and fixed to the support plate on which the lamp cover is mounted in accordance with the shape of the lamp cover, and the lamp cover is held by the support rods at appropriate plural positions from both sides thereof. I do.

[0005] Compressed air is produced by a compressor and temporarily stored in a tank, and is sent from the tank to a hose in a housing through an air pipe. The compressed air that is blown out of the nozzle cover through the hose and blows off dust on the surface of the lamp cover is continuously blown out during the cleaning process of one lamp cover, and is discharged to the outside of the housing from a gap or the like in the housing. In this case, at the end of one cleaning process or the like, compressed air is periodically discharged from an air discharge port provided in the housing to suck and discharge air in the housing, thereby discharging dust scattered in the housing. It is collected by a net or the like attached to the exit to prevent scattering to the outside.

[0006]

However, the conventional air-injection cleaner using a compressor requires a large-scale compressor and an air pipe connected to the compressor. Becomes complicated. In addition, dust that is blown off from the lamp cover and scattered into the housing cannot be sufficiently caught by the net provided at the outlet through which compressed air is periodically circulated.
Since the compressed air ejected from the nozzles during the cleaning process leaks from the housing, dust leaked from the lamp cover is discharged to the outside of the housing as it is together with the leaking air.

In addition, since the size of the support plate, the position of the support rod, the position of the nozzle, and the like are fixed for each type of lamp cover product, the support plate and the nozzle must be replaced each time the product changes. Is cumbersome and costs increase.

The present invention has been made in consideration of the above-mentioned prior art, and has a compact structure without complicating the structure.
Dust blown from the object to be cleaned is not scattered around,
The aim is to provide an air cleaner that can increase versatility as a structure that can handle objects with different shapes, reduce running costs by reducing power consumption as well as initial costs by simplifying the structure, and further reduce maintenance work. And

[0009]

In order to achieve the above object, according to the present invention, a housing, a support plate provided in the housing for setting an object to be cleaned, and blowing air on the object are provided. A nozzle and a blower that sucks air in the housing and sends the air to the nozzle via a duct, wherein the nozzle is attached to the duct, and the position of the duct and the blower is fixed to each other; And the support plate are configured to be mutually displaceable.

According to this configuration, for example, the air in the housing is circulated by the blower installed in the housing and blown from the nozzle to the object, and the dust on the surface is blown off and removed. The blower is integral with the duct and the nozzle mounted on the duct, and blows the discharge air from the blower from the nozzle to the entire object while moving relative to the object as a whole.

As described above, since a blower that can be installed in the housing is used instead of the compressor, no air piping is required, the structure is simplified, and the power consumption is reduced. By circulating the air in the casing through, for example, a filter, the blower suppresses the leakage of the air in the casing to the outside, and suppresses the scattered dust from being directly discharged to the outside.

In a preferred embodiment, the duct has a swing shaft, and is rotatable around the swing shaft.

According to this configuration, for example, the duct having the nozzle at the upper end is reciprocated in a fixed rotation angle range around the swing axis provided at the lower end thereof together with the blower integrated and fixed thereto. The nozzle oscillates by operating, and the nozzle blows the discharge air from the blower while reciprocating in an arc along the object. In this case, for example, fixing the blower,
In the case where the hose is connected to the swinging duct by a flexible hose or the like, the hose may swing and the connecting portion may be deteriorated, and maintenance and parts replacement are required. On the other hand, in the present invention, since the duct and the blower are swinged integrally as an integrated structure, problems such as deterioration of the hose between the fixed portion and the swinging portion do not occur. Therefore, as compared with the configuration using a flexible hose or the like, the number of components can be reduced with a simple configuration, and the labor for maintenance and replacement of deteriorated components can be reduced.

In another preferred configuration example, the apparatus is provided with an elevating mechanism of the support plate or the duct, and the support plate is vertically movable with respect to the duct.

According to this configuration, the support plate on which the object is placed moves up and down with respect to the duct integrated with the blower, and air is blown from the nozzle provided on the duct to the entire object.

In a further preferred configuration example, a plurality of support members for holding the object are projected and mounted on the support plate, and the mounting position of each support member can be changed according to the shape of the object. It is characterized by being.

According to this structure, for example, insertion holes or the like are provided at a plurality of positions of the support plate, the insertion holes are selected according to the shape of the object, and a support member such as a support rod is inserted.
It can be applied to objects of different shapes using the same support plate. As a result, the versatility of the cleaner is increased, and it is possible to effectively cope with products that are produced in a large variety and in small quantities.

In a further preferred embodiment, the nozzle protrudes from the duct via an elastic material, the length of the protrusion is adjustable, and the nozzle is fixed and held at the adjusted position by the elastic material. Features.

According to this configuration, for example, the length of the nozzle can be adjusted by forming a male screw on the outer periphery of the nozzle root and screwing the male screw into the female screw provided on the duct side. In this case, an elastic material such as rubber is provided on the duct side of the nozzle root portion, and the nozzle is fixedly held by the elastic material by pressing the nozzle into a hole provided in the elastic material and inserting the nozzle. This makes it possible to easily hold the nozzle at an arbitrary adjustment position without using a double nut or the like.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An air jet cleaner according to the present invention will be described below with reference to the drawings. FIG. 1 is an internal front configuration diagram of an air injection cleaner according to the present invention. FIG. 2 is an internal side view of the air injection cleaner according to the present invention, and FIG. 3 is a front view thereof.

As shown in the drawing, a duct 2 is provided in a housing 1 so as to be rotatable in the direction of an arrow A (FIG. 1) about a swing shaft 3 as a fulcrum. Although the shape of the duct 2 is a hexagon in which a rectangle and a trapezoid are combined in the drawing, it can be changed according to the shape of the object, the blower capacity, the blowing speed, and the like, such as a trapezoid and a rectangle. The upper part of the duct 2 is provided with blow-off chambers 6 at two opposing upper and lower locations. In this blowing chamber 6,
A plurality of nozzles 4 are attached via elastic members 5. The blowing chamber 6 is provided above and below a lamp cover 9 to be cleaned. The position of the blowing chamber 6 can be adjusted by sliding up and down with respect to the duct 2 in order to correspond to the shape of the object to be cleaned.

The protruding length of the nozzle 4 from the blowing chamber 6 can be changed for each nozzle. Each nozzle 4 is made of, for example, a hollow bolt member, and is screwed to a nut welded to the inner surface of the duct to adjust the protruding length. In this case, an elastic material 5 such as neoprene rubber is adhered to the outer surface of the duct,
The nozzle 4 may be screwed into the elastic member 5 while being pressed. Thereby, the nozzle 4 is fixed and held at the position adjusted by the pressing force of the elastic member 5 as it is after the length adjustment. In this case, the outer surface or the inner surface of the end of the nozzle 4 may be formed in a hexagon or the like so that a tool such as a spanner can be used.

Alternatively, the nozzle 4 may be formed of a relatively soft metal material such as a copper pipe, and may be bent and plastically deformed to change the blowing direction according to the shape of the lamp cover.

A static elimination bar 7 is attached to a side surface of each blowout chamber 6. By applying a predetermined voltage to the charge removing bar 7, static electricity is removed from the lamp cover 9 and dust adhering to the lamp cover 9, and the electrostatic attraction force is eliminated. Therefore, dust is easily removed by blowing air from the nozzle 4.

The air blown to the lamp cover 9 is applied to the housing 1.
And is supplied from a blower unit 33 integrally fixed to the duct 2. This blower unit 3
Reference numeral 3 denotes an integrated unit formed of a pre-filter 10, a receiving frame 11, a blower 12, a sound absorbing chamber 13, a HEPA filter (or a medium-performance filter or the like) 14, a screw 16 and a snap lock 16. This blower unit 33 is fixed on the horizontal duct passage 15 below the duct 2.

The air in the housing 1 is sucked by the blower 12 through the pre-filter 10 as shown by the arrow a, is silenced by the sound absorbing chamber 13 (arrow b), and passes through the HEPA filter (or a medium-performance filter or the like) 14 as indicated by arrow c. Is supplied to the duct passage 15 as described above. The air having passed through the duct passage 15 passes through the duct 2 as shown by an arrow d, and is blown from the nozzle 4 of the blowing chamber 6 to the lamp cover 9 (arrow e). That is, the air circulates inside the housing 1 as shown by arrows a to e, and hardly leaks outside the housing 1. in this case,
The dust scattered in the housing 1 is removed by the pre-filter 10 and the HE
Since the air is reliably collected by the PA filter (or a medium-performance filter or the like) 14, sufficiently clean air is blown to the lamp cover 9, and there is no problem of reattachment or leakage outside the housing 1.

As described above, the blower unit 33 integrated with the duct 2 is connected to the disk 31 connected to the swing motor 24.
And an arrow A around the swing shaft 3 integrally via a slide link 32 which engages with a pin (described later) provided on the disc 31.
Swing right and left like. As described above, since the duct 2 and the blower 12 are integrally swung, there is no need to connect the duct 2 and the blower 12 with a flexible hose or the like as in the case where the duct 2 and the blower 12 are separated from each other. There is no danger of deterioration of the hose and its connectors, and the trouble of replacing parts and maintenance due to the deterioration is reduced.

The housing 1 is provided with vent holes 17 for heat radiation, one on each of the left and right side surfaces and four on the lower surface. In addition, a caster 30 is provided together with the level adjuster 8 at a lower portion of the housing 1. A lid 18 is provided on the upper part of the housing 1. This lid 18
It can be opened as indicated by an arrow B (FIG. 2), and is opened and closed by a cover opening and closing motor 21 by linking to a support plate 19 of the lamp cover 9 as described later. The support plate 19 of the lamp cover 9 is rotatable about an axis 20 as shown by an arrow H (FIG. 2), and is in a horizontal position with the lid 18 open, and the lamp cover 9 is attached and detached (dashed line), and the cleaning is performed. Inside, the lamp cover 9 falls vertically as shown by the solid line and is held in a folded state.

With the cover 18 of the housing 1 open, the support plate 19
When the lamp cover 9 is placed on the lamp, the support plate 19 is rotated in the downward direction of the arrow H about the shaft 20 by the link mechanism described below (FIG. 5), the lid 18 is closed, and the lamp cover 9 is settled at the cleaning position. A cover opening / closing motor 21 for opening and closing the cover 18 is provided on the front side inside the housing 1. At its lower part, a static elimination transformer 22 is provided, beside it is provided a rocking motor 24 mounted on a support 23, and at its upper part a power distribution board 25 is provided. The switchboard 25 includes an inspection door 26
It can be inspected by opening. An emergency stop switch 27 for urgently stopping the entire apparatus, a lid opening / closing switch 28 for opening and closing the lid 18, and a static elimination abnormality buzzer 29 for detecting an abnormality of the static elimination bar 7 are provided above the inspection door 26.

The rotation of the oscillating motor 24 causes the disk 31 to rotate, and accordingly, the slide link 32 swings right and left. This mechanism will be described later (FIG. 6). When the slide link 32 is swung right and left, the duct 2 swings left and right around the swing shaft 3 as a fulcrum. Thus, the nozzle 4 fixed to the duct 2 blows air while moving around the lamp cover 9 to perform cleaning. When the cleaning is completed, the lid 18 is moved to an arrow B
The support plate 19 is rotated upward in the direction of the arrow H linked to the opening, and the lamp cover 9 is taken out.

FIG. 4 is an exploded view of the blower unit 33. As shown in the drawing, the pre-filter 10 is sandwiched between the upper and lower presser meshes 34 and the receiving mesh 35,
Attach to 11a is a partition sheet. The lower part is provided with the blower 12 attached to the blower mounting frame 36, and the lower part thereof is fitted with the sound absorbing chamber 13 having the sound absorbing box 37. These are fixed to each other with screws (not shown). A HEPA filter (or medium-performance filter, etc.) 1
4 is provided. The HEPA filter 14 is held by the frame material 59. The frame member 59 and the sound absorbing chamber 13 are
, So that it is detachably fixed. Frame material 59 is duct passage 1
5 (FIGS. 1 and 2). Thus, the blower unit 33 is configured.

FIG. 5 is an explanatory view of a link mechanism between the lid and the support plate. The support plate 19 for mounting the lamp cover 9 to be cleaned is made of, for example, a perforated plate, and a support rod 41 for holding the lamp cover 9 is inserted according to the shape of the lamp cover. Each support rod 41 has a shape and a length so that the support plate 19 can move to a vertical position as shown by an arrow D during cleaning and can support the lamp cover 9 when it falls down from the vertical mounting position to the side. Is set, and a hole (not shown) provided in the support plate 19 is selected and mounted. This allows
The lamp cover 9 having a different shape can be set and cleaned without replacing the support plate 19. A cover detection switch 38 is provided on the support plate 19, and detects when the lamp cover 9 is set on the support plate 19. The position of the cover detection switch 38 may be changed in accordance with the shape of the lamp cover 9 similarly to the support rod 41.

When the lamp cover 9 is set on the support plate 19 with the cover 18 opened, the cover detection switch 38 sends a signal to the control circuit 39 to operate the cover opening / closing motor 21. The lid opening / closing motor 21 is connected to the lid 1 via the link mechanism 40.
8 is closed, and the supporting plate 19 is rotated in the direction of arrow D around the shaft 20 in conjunction with this, and the lamp cover 9 is turned down. The lamp cover 9 on the support plate 19, which has become vertical due to the rotation, is held by the support rod 41 as described above.
At this time, the duct 2 is waiting at an initial position (a dashed line in FIG. 1) inclined right or left. Subsequently, the cleaning of the lamp cover 9 is performed. When this is completed, the support plate 19 returns to the original position again via the link mechanism 40, and the lid 18 opens in the direction of arrow B so that the lamp cover 9 can be taken out. . Such a series of cleaning operations is automatically performed by sequence control according to a predetermined program.

FIG. 6 is an explanatory view of the swinging mechanism of the duct.
The disk 31 is fixed to the output shaft of the swing motor 24 (FIG. 2). When the disk 31 rotates as shown by the arrow E, the pins 43 attached to the disk 31 revolve. The pin 43 is fitted into a long hole 42 provided in the slide link 32, and the pin 43 reciprocates in the long hole 42 in the longitudinal direction as the disk 31 rotates. Therefore, the slide link 32 is swung right and left about the shaft 44 as a fulcrum, and performs a pendulum motion.
In this case, it is preferable that the pin 43 be provided with a bearing on its outer peripheral portion for smooth rotation and movement in the elongated hole 42. The shaft 44 is coaxial with the swing shaft 3 of the duct 2 (FIGS. 1 and 2). The slide link 32 is fixed to the duct passage 15 or a blower unit 33 fixed thereto. This causes the duct 2 to swing right and left around the swing axis 3 as shown by an arrow A as shown in FIG.

As shown in FIG. 2, the swing motor 24 is mounted on a support 23. The support 23 is pivotally supported by a shaft 58 and supported from below by bolts (not shown). At the time of adjusting the projection length of the nozzle 4, the bolt is removed and the support base 23 is tilted as shown by the arrow C. Thereby, the disk 31 of the swing motor 24 is separated from the slide link 32. Therefore, the duct 2 is free and can be manually swung, and the length can be adjusted while moving the duct 2 by hand and checking the nozzle length.

FIG. 7 is a flowchart showing the operation of the air injection cleaner according to the present invention. First, the power is turned on (Step P1), and the lid 18 is opened (Step P2). It opens automatically by the program. That is, power ON
As a result, the lid opening / closing motor 21 operates to open the lid 18 and raise the support plate 19 horizontally. Subsequently, the object (lamp cover 9) is set on the support plate 19 (step P).
3). When the detection switch 38 detects that the target object has been set (step P4), the cover opening / closing motor 21 is driven, and the support mechanism 19 is operated by the link mechanism 40 as described above.
And the cover 18 is closed (step P5).

Thereafter, the blower 12 starts operating (step P6), and the duct 2 swings to clean the object (step P7). This cleaning is performed until a predetermined time or the number of times of the duct swing is reached.
When the timer or the counter of the number of swings detects that the cleaning is completed (Step P8), the blower 12 is stopped (Step P9), the lid 18 is opened, and the support plate 19 is raised (Step P10). Subsequently, the object is taken out (Step P11). If there is a next object to be cleaned, the process is repeated from Step P3 (Step P12).
When all the objects have been cleaned, the lid 18 is closed by the manual lid opening / closing switch 28 (FIG. 3), and the process ends (step P13).

FIG. 8 is a configuration diagram of another embodiment of the air injection cleaner according to the present invention. In this embodiment, the blower 53 and the duct 56 are fixed, and the lamp cover 48 is moved up and down. Case 4 having lid 47 on top
6, a support plate 49 on which a lamp cover 48 is mounted and which moves up and down is provided. The support plate 49 is provided with a lifting belt 51.
And an up-and-down mechanism 45 composed of a drive motor 50 moves up and down as indicated by arrow G. Instead of the belt 51, another transmission means, for example, a chain, a wire, another link mechanism, or the like may be used.

The lamp cover 48 indicated by a solid line is in the lower limit position, and 48a is the lamp cover in the upper limit position. Reference numeral 48b denotes a lamp cover at a set position.
The lamp cover 48 is set or removed from the support plate 49 at this set position with the lid 47 opened.

The lid 47 slides as shown by the arrow F to open and close the upper front part of the housing 46. The position indicated by the solid hatching is a closed state, and the dashed line 47 'indicates the position of the lid in an open state.

The lamp cover 48 is supported on a support plate 49 by a support rod (not shown) whose position can be selected similarly to the above-described embodiment.
Held on. A duct 56 is provided so as to sandwich the support plate 49 from the front and rear. These ducts 56 communicate with each other via a duct passage (chamber) 60 at a lower portion thereof. A blower unit 62 is fixed on the duct passage 60. The blower unit 62 includes a pre-filter 52,
It comprises a blower 53, a chamber 54, and a HEPA filter (or a medium-performance filter or the like) 55.

At the upper end of each duct 56, a nozzle 57 is provided via an elastic member 63 so as to be adjustable in length in accordance with the shape of the lamp cover, similarly to the above-described embodiment. A static elimination bar 61 is attached to a lower portion of the nozzle 57.

For cleaning, first, the lid 47 is opened and the lamp cover 48 is placed on the support plate 49. Lid 47
Is closed, the supporting plate 49 is moved by the elevating mechanism 45 to the belt 51.
(Or a transmission means such as a chain, a wire, or another link mechanism) so that the lamp cover 48 on the support plate 49 is blown with air from the nozzle 57 to perform cleaning. The air in the housing 46 is sucked by the blower 53 via the pre-filter 52, is discharged through the HEPA filter (or a medium-performance filter or the like) 55 into the duct passage 60, and from the duct passage 60 through each duct 56. It is sprayed on the lamp cover 48 via the nozzle 57.
Thereby, air circulates in the housing 46 similarly to the above-described embodiment.

FIG. 9 is a flowchart showing the operation of the cleaning device of FIG. First, the power is turned on (step Q1), and the lid 47 is opened (step Q2). The target object (lamp cover 48) is set on the support plate 49 (step Q3), and when it is detected that the target object has been set (step Q4), the support plate 49 is lowered from the set position (48b) to the upper limit. The descent is stopped at the position (48a) and the lid 47 is closed (step Q5). Thereafter, the blower 53 starts operating (step Q6), and the support plate 49 moves up and down to clean the object (step Q7). When it is detected that the cleaning for the predetermined time or the predetermined number of times of the vertical movement is completed (Step Q8), the blower 53 is stopped (Step Q9), and the cover 47 is opened (Step Q10). At this time, the support plate 49 is set so as to stop at the set position. Subsequently, the object is taken out (step Q11), and if there is the next object, the process is repeated from step Q3 (step P12). When all the objects have been cleaned, the lid 47 is closed and the process ends (step Q13).

[0045]

As described above, in the present invention, a blower that can be installed in a housing is used in place of a compressor, so that air piping is not required and the structure is simplified.
Power consumption can be reduced. By circulating the air in the casing through, for example, a filter, the blower suppresses the leakage of the air in the casing to the outside, and suppresses the scattered dust from being directly discharged to the outside.

Further, since the blower, the duct and the nozzle are integrated and operate integrally with the object, a flexible air supply hose or the like is not required between the blower and the nozzle. It does not take time and effort.

[Brief description of the drawings]

FIG. 1 is an internal front configuration diagram of an air injection cleaner according to the present invention.

FIG. 2 is an internal side configuration diagram of the air injection cleaner according to the present invention.

FIG. 3 is a front view of the air injection cleaner according to the present invention.

FIG. 4 is an exploded view of a blower unit.

FIG. 5 is an explanatory diagram of a link mechanism between a lid and a support plate.

FIG. 6 is an explanatory view of a swing mechanism of a duct.

FIG. 7 is a flowchart showing the operation of the air injection cleaner according to the present invention.

FIG. 8 is a configuration diagram of another embodiment of the air injection cleaner according to the present invention.

9 is a flowchart showing the operation of the cleaning device of FIG.

[Explanation of symbols]

1: housing, 2: duct, 3: swing axis, 4: nozzle, 5:
Elastic material, 6: blow-out chamber, 7: static elimination bar, 8: level adjuster, 9: lamp cover, 10: pre-filter, 1
1: receiving frame, 11a: partition sheet, 12: blower, 1
3: sound absorbing chamber, 14: HEPA filter (or medium performance filter, etc.), 15: duct passage, 16: snap lock,
17: vent, 18: lid, 19: support plate, 20: shaft, 2
1: lid opening / closing motor, 22: static elimination transformer, 23: support base, 24: swing motor, 25: switchboard, 26: inspection door,
27: emergency stop switch, 28: lid open / close switch, 2
9: Static neutralization buzzer, 30: Caster, 31: Disk,
32: slide link, 33: blower unit, 34:
Foot wire mesh, 35: receiving wire mesh, 36: blower mounting frame, 3
7: sound absorbing box, 38: cover detection switch, 39:
Control circuit, 40: Link mechanism, 41: Support rod, 42: Slot, 43: Pin, 44: Shaft, 45: Elevating mechanism, 46: Housing, 47 lid, 48: Lamp cover, 49: Support plate, 5
0: drive motor, 51: lifting belt (or other transmission means), 52: pre-filter, 53: blower, 54: chamber, 55: HEPA filter (or medium-performance filter, etc.), 56: duct, 57: nozzle , 58: axis, 59:
Frame material, 60: duct passage, 61: static elimination bar, 62: blower unit.

Claims (5)

[Claims] 1. A casing, a support plate provided in the casing for setting an object to be cleaned, a nozzle for blowing air to the object, and a duct for sucking air in the casing and passing the air through the duct. A nozzle that is attached to the duct, a position between the duct and the blower is fixed, and the nozzle and the support plate are configured to be mutually displaceable. Air injection cleaner characterized. 2. The air injection cleaner according to claim 1, wherein the duct has a swing shaft, and is rotatable around the swing shaft. 3. The apparatus according to claim 1, further comprising an elevating mechanism for the support plate or the duct.
The air jet cleaner according to claim 1, wherein the support plate is vertically movable with respect to the duct. 4. A plurality of support members for holding the object are mounted on the support plate so as to protrude, and each support member is
The air jet cleaner according to claim 1, 2 or 3, wherein a mounting position can be changed according to a shape of the object. 5. The nozzle protrudes from the duct via an elastic material, the length of which is adjustable, and the nozzle is fixed and held at the adjusted position by the elastic material. Item 5. An air injection cleaner according to any one of Items 1 to 4.