JP6137799B2 - Blower - Google Patents

Description

  The present invention relates to a blower provided with a filter on the upstream side of a blower.

  Indoor air contains various substances that are uncomfortable or harmful to the human body, such as dust, pollen, tobacco smoke, and exhaled air. Particularly in recent years, since the houses are airtight, such harmful substances are likely to stay in the room. For this reason, natural ventilation has been provided by opening windows in rooms as appropriate.

  However, it is the actual situation that natural ventilation cannot be performed as desired in areas where air pollution is severe, or in homes and workplaces where people suffer from hay fever. Under such circumstances, air purifiers having an air purifying function for purifying indoor air have been widely spread.

  In the air cleaner, for example, a purification filter is attached to the front surface, and a ventilation path in which a blower is arranged is formed inside. The ventilation path extends from the front opening to the upper outlet. In such an air purifier, the air in the room, which is external air, is sucked into the ventilation path through the purification filter according to the rotation of the blower, and the sucked air is blown out from the air outlet to the room, which is outside. At that time, harmful substances contained in the air are removed by being collected, adsorbed and decomposed by the purification filter, thereby purifying the air.

In addition, air purifiers equipped with ion generators have been commercialized for the purpose of adjusting indoor air to a more comfortable state. In an air cleaner equipped with an ion generator, positive ions H ⁺ (H ₂ O) _n (n is a natural number) and negative ions O ₂ ⁻ (H ₂ O) _m (m is a natural number) Generated and blown out ions together with the sucked air to inactivate fungi and bacteria floating in the air.

  Patent Document 1 describes an air cleaner provided with two ventilation paths for blowing out air sucked from separate suction ports from separate upward outlets. In this conventional air purifier, a humidifying filter is arranged in one ventilation path, the air is humidified and blown out, and an ion generator is arranged in another ventilation path. Blow out. Blowers are arranged in the two ventilation paths, respectively, so that the air volumes of the two fans can be controlled independently. Thereby, the air cleaner of patent document 1 can perform control which humidifies air independently, and control which cleans air.

  Patent Document 2 includes ions generated by an ion generator after sucking air from one suction port into a ventilation path when one blower blows air, and passing the sucked air through a purification filter. An air cleaner is described which is adapted to blow out from separate outlets. The air outlet of the air cleaner includes an upward-facing canopy outlet and a forward-facing bottom outlet that is slightly inclined upward. The air cleaner described in Patent Document 2 can effectively perform sterilization and the like by blowing out air containing ions upward and forward.

JP 2010-276296 A JP 2009-142356 A

  In an air blower such as an air purifier, a purification filter is generally attached to the upstream side of the air blowing means (blower) in order to collect and remove coarse dust contained in the air flowing from the air inlet. Such a purification filter includes a net-like filter having relatively fine meshes and a holding frame for holding the filter, and the holding frame is provided with a knob for a user to hold. The air blowing means of the air blower is often installed in a deep place inside the housing so as not to touch the user's hand, and when the purification filter is to be attached to the upstream side of the air blowing means, it constitutes the housing. A cover is removed and attached, or a purification filter is inserted from an intake port by gripping a knob and attached to a predetermined attachment site.

  Since it is recommended that such a purification filter be periodically removed from the device and cleaned in order to maintain the performance of the blower, there are many opportunities to attach and detach it from the device.

  However, in the conventional blower, the cover of the housing is removed, the purification filter is removed, and after cleaning, the purification filter is attached in the reverse procedure and then the cover is attached again, or a finger is inserted from the air inlet to insert the holding frame. Since it is necessary to attach the purification filter in the reverse procedure after searching for the knob, grasping the knob, removing it from the attachment site, and cleaning it, it cannot be denied that the removal and installation of the purification filter is troublesome.

  This invention is made | formed in view of such a situation, and it aims at providing the air blower which can implement the attachment or detachment of a filter easily.

A blower according to the present invention is provided in a housing having an intake port and an air supply port, and in a midway of an air passage from the intake port to the air supply port, and air sucked from the intake port is passed through the air supply port. In a blower device comprising a blowing means for sending to the outside and a filter detachably mounted between the air inlet and the air blowing means, the filter constitutes a part of the air passage near the air inlet , A plate that is curved in the flow direction of the air sucked from the air inlet, and a filter portion that protrudes from the plate and through which the air sucked from the air inlet passes, the filter portion in the plate A long concave portion is provided in the lateral direction at the connecting portion.

  The air blower according to the present invention is characterized in that the filter portion is inclined to the air blowing means and protrudes from the plate.

  The blower according to the present invention is characterized in that a rib is provided at an edge portion of the plate body near the intake port.

  The blower according to the present invention is characterized in that the plate body is a handle.

  In the present invention, when the filter is mounted at a predetermined mounting position of the blower, the plate constituting the filter forms a part of the ventilation path. In addition, since the plate body is located near the intake port in the mounted state, the plate body is gripped by the user's hand, and becomes a handle for mounting or removing the plate body from the blower device.

  In the present invention, when the filter is mounted at a predetermined mounting position of the blower, the plate constituting the filter constitutes a part of the air passage and guides the air sucked from the intake port to the filter unit. be able to. In addition, since the plate body is located closer to the intake port in the mounted state, the plate body can be gripped by the user's hand and attached to the blower or removed from the blower. Becomes easy.

It is a perspective view of the front side which shows the air conditioner which concerns on this Embodiment. It is side sectional drawing which shows the air conditioner which concerns on this Embodiment. It is a perspective view of the back side which shows the air conditioner concerning this Embodiment. It is a disassembled perspective view which shows the air conditioner which concerns on this Embodiment. It is a front view of a pre filter. It is a perspective view of a pre filter. It is a side view of a pre filter. It is a schematic diagram which shows the state at the time of attaching / detaching a pre filter. It is a schematic diagram which shows the state at the time of attaching / detaching the pre filter which concerns on Embodiment 2. FIG. It is a schematic diagram which shows the state at the time of attaching / detaching the pre filter which concerns on Embodiment 3. FIG.

The form which applied the air blower concerning this invention to the air conditioner is demonstrated concretely using drawing.
Embodiment 1 FIG.
1 is a front perspective view showing an air conditioner according to the present embodiment, FIG. 2 is a side sectional view, FIG. 3 is a rear perspective view, and FIG. 4 is an exploded perspective view. In FIG. 2, the left side of the drawing is the front side (front side) of the air conditioner, and the right side of the drawing is the back side (rear side) of the air conditioner.

  The air conditioner includes a vertical rectangular parallelepiped housing 1 and is installed on a floor in a room having a wall and a floor so that the back side of the housing 1 faces the wall. The air conditioner according to the present embodiment includes an air conditioning operation for deodorizing an indoor odor installed therein, an air conditioning operation for collecting indoor dust, dust, pollen and the like, positive ions and negative ions (charged particles) ( Hereinafter, an air-conditioning operation that simply releases ions) and an air-conditioning operation that humidifies the room are possible.

  Inside the housing 1, a first ventilation path 10, a second ventilation path 20, and a control chamber 90 are provided so as to be partitioned from each other.

  The first ventilation path 10 is further partitioned by a partition wall 14 in the vertical direction and a partition wall 15 in the oblique rear direction, and is located between the filter housing chamber 11 on the rear side (back side) of the partition wall 14 and the two partition walls 14 and 15. The humidification chamber 12 and the air supply chamber 13 on the front side (front side) of the partition wall 15 are provided. A rear panel 16 having a large number of air inlets 17, 17, 17,... Is detachably attached to the rear surface of the housing 1. The filter housing chamber 11 communicates with the outside through a large number of intake ports 17, 17, 17,... Opened in the rear panel 16. The air supply chamber 13 communicates with the outside through an air supply port 18 established on the top surface of the housing 1. The humidification chamber 12 is configured to communicate with both the filter housing chamber 11 and the air supply chamber 13 through an opening provided in the lower portion of the partition walls 14 and 15.

  A deodorizing filter 31 and a dust collection filter 32 are stacked in the filter storage chamber 11. The deodorizing filter 31 is formed by, for example, dispersing and holding activated carbon in a non-woven fabric, and acts to adsorb and remove odorous components during ventilation. The dust collection filter 32 is, for example, a known HEPA (High Efficiency Particulate Air) filter, and functions to collect and remove fine dust contained in the ventilation. The deodorizing filter 31 and the dust collecting filter 32 are each integrated into a rectangular frame made of synthetic resin, and are fitted in a filter housing chamber 11 provided on the front side of the rear panel 16.

  The blower fan 4 as a blower means is, for example, a sirocco fan, and includes an impeller 40 and a fan motor 41 that drives the impeller 40. The fan motor 41 is fixed to the wall surface constituting the air supply chamber 13. The impeller 40 is fixed to the output end of the fan motor 41 protruding into the air supply chamber 13, and is disposed so as to face an opening provided in the lower part of the partition walls 14 and 15. The impeller 40 of the blower fan 4 is rotated by driving a fan motor 41. When the impeller 40 rotates, outside air is introduced into the filter housing chamber 11 through the intake ports 17, 17, 17,... Provided in the rear panel 16 as indicated by white arrows in FIG. . The outside air introduced into the filter storage chamber 11 flows forward in the filter storage chamber 11, is sucked into the impeller 40 through the humidification chamber 12, and is led out into the air supply chamber 13 by changing the direction upward. The Then, the air supply chamber 13 is passed in a diagonally backward direction, and is sent to the outside through an air supply port 18 at the end of the air supply chamber 13.

  Thus, the filter storage chamber 11, the humidification chamber 12, and the air supply chamber 13 constitute the first ventilation path 10 in which the air flow described above is generated according to the operation of the blower fan 4. The deodorizing filter 31 and the dust collecting filter 32 are located on the upstream side of the first ventilation path 10, and the outside air introduced into the filter housing chamber 11 through the intake ports 17, 17, 17,. The odorous component is removed by passage, and clean air from which dust is removed by passage of the dust collecting filter 32 is sent out through the air supply port 18 at the end of the air supply chamber 13.

  Note that a louver 7 for adjusting the opening area of the air supply port 18 is provided at the end of the first ventilation path 10. The louver 7 adjusts the opening area of the air supply port 18 in accordance with the air conditioning operation of the air conditioner, and is configured to hardly change the wind direction.

  The air cleaner according to the present embodiment has a humidifying function, and is provided in the humidifying chamber 12 (that is, between the dust collection filter 32 and the blower fan 4) in order to humidify the air flowing through the first ventilation path 10. Provides a humidifying unit 5.

  The humidification unit 5 includes a humidification filter unit 50 and a water tank 55. The humidifying filter unit 50 is configured to accommodate and hold a humidifying filter 52 inside a holding frame 51 having an annular shape. The humidifying filter 52 is a sheet made of a material having a high water content and allowing ventilation, such as a nonwoven fabric. The humidifying filter 52 is folded and stacked in a bellows shape so as to increase the contact area with the ventilation flowing from the rear side toward the front side. The holding frame 51 is accommodated in the width direction along the direction of ventilation.

  The water tank 55 is a dish-shaped container with an open top, and is placed inside the humidifying chamber 12 on the front side of the dust collection filter 32 by being fitted into the guide portion 19 provided on the bottom plate of the housing 1. Two holding rollers 51 (not shown) are configured to rotatably support the holding frame 51 of the humidifying filter unit 50. The water tank 55 can be pulled out from one side surface of the housing 1 by sliding along the guide part 19 together with the humidifying filter part 50. A wide tank receiver 56 is connected to the end of the water tank 55 on the drawer side, and the water supply tank 6 is attached to and detached from the tank receiver 56.

  The water supply tank 6 is a rectangular parallelepiped tank having a water tap at one end, and is attached to the tank receiver 56 in an inverted posture with the water tap side facing downward. The faucet incorporates a known constant water level valve. The constant water level valve is opened when the water supply tank 6 is attached to the tank receiver 56, and acts to send water stored in the water supply tank 6 to the water tank 55 and store water at a constant water level inside the water tank 55. .

  A driven gear 51 a is attached along the outer periphery of the holding frame 51 of the humidifying filter unit 50, and the driven gear 51 a meshes with the drive gear 58 a disposed on the upper side of the humidifying filter unit 50. When the drive gear 58a is rotated by the electric motor 58 disposed on the upper side of the humidifying filter unit 50, the driving force is transmitted to the driven gear 51a, and the holding frame 51 and the humidifying filter 52 are rotated. As the humidifying filter 52 rotates, the portion immersed in the water tank 55 sequentially moves in the circumferential direction to suck up water, and the entire humidifying filter 52 is in a state containing moisture. As a result, the air that has passed through the humidifying filter 52 is humidified. On the other hand, when the humidifying filter 52 is not rotating, the air that has passed through the humidifying filter 52 hardly absorbs moisture.

  An ion generator 35 is disposed in the air supply chamber 13 from the blower fan 4 to the air supply port 18. The ion generator 35 is fixed to the wall surface 13a of the air supply chamber 13, and has a needle-like discharge electrode and an induction electrode arranged opposite to the discharge electrode. The discharge electrode to which a high voltage is applied causes corona discharge. To generate positive and negative ions. The discharge electrode of the ion generator 35 is exposed to the air supply chamber 13, and when the ion generator 35 is driven, ions are released from the blower fan 4 to the air supply port 18 and include ions. The air is sent out from the air inlet 18 into the room. The ions released into the room kill or inactivate fungi, viruses, allergens, etc., and decompose substances that cause malodors (for example, organic compounds such as acetaldehyde).

  Since the front and rear wall surfaces 13a and 13b in the air supply chamber 13 are arranged so as to incline from the front lower side to the rear upper side, the air sent out through the air supply port 18 is the rear surface of the air conditioner. Ascends along the walls of the wall and flows away from the walls along the ceiling. The air flowing along the ceiling descends near the wall on the opposite side of the room, so that the air containing ions can reach a relatively distant place from the air conditioner. In addition, the air descending near the wall on the opposite side of the room flows along the floor to the phrase of the air conditioner and circulates in the room.

  On the other hand, the second ventilation path 20 is positioned above the first ventilation path 10 and in front of the housing 1, and is partitioned by a curved partition wall 21 that continues to the top surface of the housing 1 and a front cover 1 a of the housing 1. Provided in the area. The front cover 1a is provided with a rectangular intake port 22, and an air supply port 26 is provided between the upper portion of the front cover 1a and the top surface of the housing. The second ventilation path 20 is provided with a blower fan 24, and the second ventilation path 20 is divided into an intake chamber 20 a below the blower fan 24 and an air supply chamber 20 b above the blower fan 24. . The intake chamber 20 a communicates with the outside through the intake port 22, and the air supply chamber 20 b communicates with the outside through the air supply port 26.

  The intake chamber 20a is provided with a rough lattice guard 23 to prevent the user's finger from inadvertently touching the blowing fan 24 during operation. In addition, attachment portions 23a and 23b for the prefilter 8 in which permanent magnets are embedded are provided at two positions in the left and right direction at the lower end of the guard portion 23 so that the prefilter 8 is detachably attached by magnetic force. It is configured. The pre-filter 8 forms a part of the second ventilation path 20 with a filter part 81 in which a net-like filter having a relatively fine mesh is held by a holding frame 811 (see FIG. 5), and a handle at the time of attachment / detachment. A handle portion 82 that collects and removes coarse dust contained in the air flowing into the intake chamber 20a. An iron piece (not shown) is attached to the lower end of the back side of the filter part 81 at a position corresponding to each of the attachment parts 23a and 23b, and the filter part 81 is attached to the attachment parts 23a and 23b by magnetic force. Is configured to cover the entire guard portion 23.

  The blower fan 24 provided in the second ventilation path 20 includes a fan motor (not shown) and a fan 242. The fan motor rotationally drives the fan 242 around the left and right axis. The fan is, for example, a crossflow fan having a multi-blade impeller having a cylindrical shape having a plurality of blades whose outer edge side is displaced in the rotation direction with respect to the rotation center. The fan 242 is arranged such that the direction of the rotation center is the left-right direction of the air conditioner, is fixed to the output shaft of the fan motor, and rotates by driving the fan motor. The rotation of the fan 242 causes the indoor air to be sucked into the second ventilation path 20 through the intake port 22 as indicated by the solid line arrow in FIG. 2, and the sucked air is sucked into the intake chamber 20a. From the air to the air supply chamber 20 b and is sent out into the room through the air supply port 26.

  Further, an ion generator 25 is disposed in the second ventilation path 20 in the same manner as the first ventilation path 10. The ion generator 25 is fixed to the wall surface of the partition wall 21 between the blower fan 24 and the air supply port 26, and has a needle-like discharge electrode and an induction electrode disposed to face the discharge electrode. A discharge electrode to which a high voltage is applied causes corona discharge to generate positive and negative ions. When the ion generator 25 is driven, ions are released from the blower fan 24 toward the air supply port 26, and the air containing the ions is sent out from the air supply port 26 into the room. The air supply port 26 is provided with a wind direction restricting plate 27 that is rotated around an axis in the left and right direction by an electric motor, so that ions contained in the air to be delivered can easily reach the vicinity of the center of the room. The inclination angle of the wind direction regulating plate 27 is adjusted.

  The direction of air sent out from the second ventilation path 20 is different from the direction of air sent out from the first ventilation path 10. That is, air is sent forward from the second ventilation path 20, while air is sent obliquely upward rearward from the first ventilation path 10.

  5 is a front view of the prefilter 8, FIG. 6 is a perspective view, and FIG. 7 is a side view. The pre-filter 8 includes a filter portion 81 through which air sucked from the intake port 22 passes and a handle portion 82 that constitutes a part of the second ventilation path 20 near the intake port 22.

  The filter unit 81 includes a holding frame 811 and a net-like filter 812 that is held by the holding frame 811 and has a relatively fine mesh, and protrudes from the edge of the handle 82. The holding frame 811 is formed by connecting two rectangular frames 811a and 811d in the horizontal direction, and a filter 812 is stretched inside each of the frames 811a and 811d. In addition, support members 811b and 811e in the horizontal direction and support members 811c and 811f in the vertical direction are provided inside the frames 811a and 811d, respectively, to prevent the filter portion 81 from being bent or deformed.

  A clogging sensor (not shown) for detecting clogging of a filter defined by the upper end of the frame 811a and the support member 811b is attached to the upper end of the one frame 811a. This clogging sensor is, for example, an optical sensor composed of a light emitting diode and a light receiving diode, and can be determined to be clogged when the amount of light received by the light receiving diode falls below a predetermined level.

  The handle portion 82 includes an air guide surface 821 that guides air sucked from the air inlet 22 to the filter portion 81, a laterally long concave portion 822 that is provided at a site where the filter portion 81 is connected, and an edge portion near the air inlet 22. And a rib 823 provided on the surface. Further, on the back side of the handle portion 82, iron pieces (not shown) are provided at positions corresponding to the two attachment portions 23a and 23b in the guard portion 23.

  The air guide surface 821 of the handle portion 82 is formed in a plate body having a width about the same as that of the filter portion 81 in the lateral direction and an appropriate length in the air flow direction (length direction). When the air conditioner is mounted via the attachment parts 23a and 23b, the air guide surface 821 is configured to form a part of the second ventilation path 20. In the present embodiment, since the air guide surface 821 is curved in the length direction, air from the intake port 22 is guided to the filter unit 81.

  Note that the holding frame 811 and the handle portion 82 of the filter portion 81 may be integrally formed, or may be provided continuously by separate members.

  In the mounted state of the pre-filter 8, the rib 823 of the handle portion 82 is located in the vicinity of the intake port 22. When the user removes the attached prefilter 8, the user removes the rib 823 with his / her fingers and separates it from the attachment parts 23 a and 23 b, and moves the prefilter 8 to the front or obliquely downward as it is. It can be taken out from the harmony machine. In addition, since the concave portion 822 is provided on the air guide surface 821 of the prefilter 8, when removing the prefilter 8 attached to the user, the user inserts a hand into the air inlet 22 and puts a finger on the concave portion 822, The prefilter 8 can be taken out from the air conditioner by pulling out toward the front.

  FIG. 8 is a schematic diagram showing a state when the prefilter 8 is attached and detached. FIG. 8A shows a state in which the prefilter 8 is attached, and FIGS. 8B to 8D show a process of removing the prefilter 8. In FIGS. 8A to 8D, the pre-filter 8 is schematically illustrated, and the recess 822 is not illustrated.

  Since the guard part 23 of the second ventilation path 20 is provided so as to protrude forward, when the prefilter 8 is attached to the front side of the guard part 23, as shown in FIG. The filter part 81 is mounted so as to be obliquely viewed. In this mounted state, the pre-filter 8 is mounted by a magnet embedded in the attachment portions 23 a and 23 b of the guard portion 23, and a filter guide 22 a that protrudes from the lower end of the intake port 22 toward the inside of the housing 1. Is supported by.

  As shown in FIG. 8B, the rib 823 of the pre-filter 8 is picked with a finger and pulled out (or by inserting a hand into the air inlet 22 and placing the finger on the recess 822 and pulling it out toward the front). In addition, the prefilter 8 can be detached from the attachment portions 23a and 23b.

The prefilter 8 can be taken out from the intake port 22 as shown in FIGS. 8C and 8D by pulling the prefilter 8 obliquely downward after being detached from the attachment parts 23a and 23b.
When the prefilter 8 is mounted, it can be attached to the attachment parts 23a and 23b by a procedure reverse to the above-described procedure.

  As described above, in the present embodiment, it is not necessary to remove the front cover 1a in order to attach and detach the prefilter 8, and it is not necessary to open the intake port 22 greatly. The user can attach and detach the rib 823 of the pre-filter 8 with his / her finger, or can detach it by placing his / her hand on the concave portion 822 of the handle portion 82, so that workability at the time of attachment / detachment is improved.

Embodiment 2. FIG.
The mounting state and shape of the pre-filter 8 are not limited to those shown in the first embodiment. In the second embodiment, a description will be given of different forms of wearing state.

  FIG. 9 is a schematic diagram showing a state when the prefilter 8 according to Embodiment 2 is attached and detached. FIG. 9A shows a state in which the prefilter 8 is attached, and FIGS. 9B to 9D show a process of removing the prefilter 8. 9A to 9D, the pre-filter 8 is schematically illustrated, and the concave portion 822 is not illustrated.

  In Embodiment 2, the guard part 23 of the 2nd ventilation path 20 is provided in the perpendicular direction. For this reason, when the pre-filter 8 is mounted on the front side of the guard part 23, the filter part 81 is mounted in the vertical direction as shown in FIG. In this mounted state, the pre-filter 8 is mounted by a magnet embedded in the attachment portions 23 a and 23 b of the guard portion 23, and a filter guide 22 a that protrudes from the lower end of the intake port 22 toward the inside of the housing 1. Is supported by.

  The procedure for attaching and detaching the prefilter 8 is the same as that in the first embodiment. As shown in FIG. 9B, the rib 823 of the pre-filter 8 is picked with a finger and pulled out (or inserted into the air inlet 22 and placed with a finger on the recess 822 and pulled forward). In addition, the prefilter 8 can be detached from the attachment portions 23a and 23b.

The prefilter 8 can be taken out from the intake port 22 as shown in FIGS. 9C and 9D by pulling the prefilter 8 obliquely downward after being detached from the attachment parts 23a and 23b.
When the prefilter 8 is mounted, it can be attached to the attachment parts 23a and 23b by a procedure reverse to the above-described procedure.

Embodiment 3 FIG.
The mounting state and shape of the pre-filter 8 are not limited to those shown in the first embodiment. In the third embodiment, a prefilter 8 having a different shape will be described.

  FIG. 10 is a schematic diagram showing a state when the prefilter 8 according to Embodiment 3 is attached and detached. FIG. 10A shows a state in which the prefilter 8 is attached, and FIGS. 10B to 10D show a process of removing the prefilter 8. In FIGS. 10A to 10D, the pre-filter 8 is schematically illustrated, and the recess 822 is not illustrated.

  In the prefilter 8 according to the third embodiment, the air guide surface 821 is not curved and is on a plane. In this case, the air sucked from the intake port 22 can be guided to the filter part 81 by providing the handle part 82 with the filter part 81 inclined toward the blower fan 24.

  In Embodiment 3, the guard part 23 of the second ventilation path 20 is provided in the vertical direction, and when the prefilter 8 is mounted on the front side of the guard part 23, as shown in FIG. The filter unit 81 is mounted in the vertical direction. In this mounted state, the pre-filter 8 is mounted by a magnet embedded in the attachment portions 23 a and 23 b of the guard portion 23, and a filter guide 22 a that protrudes from the lower end of the intake port 22 toward the inside of the housing 1. Is supported by.

  The procedure for attaching and detaching the prefilter 8 is the same as that in the first embodiment. As shown in FIG. 10B, the rib 823 of the pre-filter 8 is picked with a finger and pulled out toward the front (or a hand is inserted into the air inlet 22 and a finger is placed on the recess 822 and pulled out toward the front). In addition, the prefilter 8 can be detached from the attachment portions 23a and 23b.

The prefilter 8 can be taken out from the intake port 22 as shown in FIGS. 10C and 10D by pulling the prefilter 8 obliquely downward after being detached from the attachment parts 23a and 23b.
When the prefilter 8 is mounted, it can be attached to the attachment parts 23a and 23b by a procedure reverse to the above-described procedure.

  In Embodiments 1 to 3, the present invention has been described with respect to an embodiment in which the present invention is applied to an air conditioner (especially an air purifier). Of course.

8 Pre-filter 81 Filter part 82 Handle part 811 Holding frame 812 Filter 821 Air guide surface 822 Concave part 823 Rib

Claims (4)

A housing having an intake port and an air supply port, a blower unit provided in the middle of an air passage from the intake port to the air supply port, and for sending out air sucked from the intake port to the outside through the air supply port; and In the air blower comprising a filter that is detachably mounted between the air inlet and the air blowing means,
The filter is
A plate body that forms a part of the air passage near the air inlet and is curved in a direction in which air sucked from the air inlet flows .
And a filter part protruding from the plate body, through which air sucked from the intake port passes,
An air blower characterized in that a long concave portion is provided in a lateral direction at a portion of the plate body connected to the filter portion.   The air blower according to claim 1, wherein the filter unit is inclined to the air blowing means and protrudes from the plate body.   The blower according to claim 1 or 2, wherein a rib is provided at an edge of the plate body near the intake port.   The air blower according to any one of claims 1 to 3, wherein the plate body is a handle.

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