JP6164264B2 - Air cleaner - Google Patents

Description

  The present invention relates to an air cleaner, and more particularly to an air cleaner with a humidifying function.

  In recent years, air cleaners with a humidifying function as described in Patent Document 1 (Japanese Patent Application Laid-Open No. 2010-17685) have been widely used. In this air purifier, the air purifying filter, the humidifying element, and the fan are arranged in this order from the upstream side in the depth direction of the main body.

  In general, in an air cleaner as described in Patent Document 1 (Japanese Patent Application Laid-Open No. 2010-17685), there is a tendency that fan sound at high output tends to leak from the outlet along the air flow.

  Then, the subject of this invention is providing the air cleaner which suppressed the noise resulting from a fan.

An air purifier according to a first aspect of the present invention is an air purifier having a humidity adjusting function, and includes an air purifying filter, a humidifying element, a fan, a main body casing, and a water storage tray. The air purification filter removes dust contained in the air. The humidifying element vaporizes the supplied water and humidifies it. A fan blows air upwards from a fan blower outlet, and ventilates to an air purifying filter and a humidification element. The main body casing houses an air cleaning filter, a humidifying element, and a fan. An air outlet that blows upward is formed in the main body casing. A water storage tray is arrange | positioned under the humidification element, and stores the water supplied to a humidification element. And they are arranged in order of a fan, an air purifying filter, a humidification element, and a blower outlet from the lower part. The water storage tray is located directly above the fan outlet and below the outlet, and is disposed between the fan outlet and the outlet.

  In this air purifier, the air sucked by the fan from below passes through the upper air cleaning filter, and then passes through the upper humidifying element to be blown out. Since the fan as the sound source is located at the lowermost position, the fan sound tends to propagate from the bottom to the top as well as the air flow. Therefore, when the fan output is large, the sound emitted from the fan is attenuated by the air purifying filter and the humidifying filter, so that the noise is suppressed. Further, since the main casing has a vertically extending shape, the installation area is reduced. Furthermore, since the humidifying element that requires maintenance is located above, maintenance work is facilitated.

  The air cleaner which concerns on the 2nd viewpoint of this invention is an air cleaner which concerns on a 1st viewpoint, Comprising: The water storage tank which supplies water to a humidification element is further provided. The humidification element and the water storage tank are arranged in a humidification chamber above the air purification filter.

  An air cleaner according to another aspect of the present invention further includes a main body casing. The main body casing houses an air cleaning filter, a humidifying element, and a fan. Moreover, the main body casing has a ventilation chamber, an air cleaning chamber, a humidification chamber, a first opening, and a second opening. A fan is disposed in the air blowing chamber. An air cleaning filter is disposed in the air cleaning chamber. A humidifying element is disposed in the humidifying chamber. The first opening allows air to pass from the blower chamber to the air cleaning chamber. The second opening allows air to pass from the air cleaning chamber to the humidification chamber. And the 1st opening and the 2nd opening have shifted in top view.

  In general, static pressure acts on the entire surface of the air cleaning filter by the air that has entered the air cleaning chamber, and the air passes through the air cleaning filter. At this time, the portion of the air cleaning filter that faces the first opening and The speed of the air in the part facing the second opening is increased. If the first opening and the second opening overlap in a wide range in a top view, the speed of passing through the air purifying filter in the overlapping portion is increased, and only the overlapping portion protrudes as the speed distribution, and the overlapping portion At a position far from the air, air does not pass or the velocity tends to be extremely small. However, in this air cleaner, since the first opening and the second opening are shifted in top view, the overlapping portion is reduced to zero or reduced, so that the velocity distribution when the air passes through the air cleaning filter is more The distribution of the base is wide, and the portion where the air does not pass or the velocity becomes extremely small decreases.

  In the air cleaner according to another aspect of the present invention, the first opening is shifted to one side with respect to the center of the air cleaning filter, and the second opening is located on one side with respect to the center of the air cleaning filter. Is shifted to the opposite side.

  In the air cleaner which concerns on the other viewpoint of this invention, the fan motor which drives a fan is further arrange | positioned in the ventilation chamber. A water storage tank for supplying water to the humidifying element is further arranged in the humidifying chamber. The fan motor is shifted to one side with respect to the center of the air cleaning filter, and the water storage tank is shifted to the opposite side to the one side with respect to the center of the air cleaning filter.

  In this air purifier, the upright stability of the main body is better when the heavy fan motor and the water storage tank are separated from each other in opposite directions (left and right or front and rear) rather than being biased to the same side in top view. Good.

  In the air cleaner according to another aspect of the present invention, the horizontal projection area of the air purification filter is 80% or more of the horizontal projection area of the air purification chamber. The area of the first opening is set in the range of 20% to 30% of the horizontal projected area of the air cleaning chamber. The area of the second opening is set in a range of 40% to 50% of the horizontal projection area of the air cleaning chamber.

  In general, since air blown from the fan passes through the first opening, the air passing speed tends to be high at a portion facing the first opening in the air purifying filter, and there is a tendency that a part of the air has a protruding velocity distribution. . However, in this air purifier, since the overlapping portion becomes zero or shrinks by setting the second opening larger than the first opening and shifting them in the top view, the air is cleaned. The velocity distribution at the time of passing through the filter has a wider distribution, and the portion where air does not pass or the velocity becomes extremely small decreases.

  The air cleaner which concerns on the 3rd viewpoint of this invention is an air cleaner which concerns on a 1st viewpoint or a 2nd viewpoint, Comprising: A suction inlet is formed in two side surfaces which a main body casing opposes. The fan is a sirocco fan having fan suction ports on both sides opposite to the suction ports. Therefore, the air volume is stabilized.

  The air cleaner which concerns on the 4th viewpoint of this invention is an air cleaner which concerns on either of a 1st viewpoint to the 3rd viewpoint, Comprising: The airflow guide arrange | positioned above an air purifying filter is further provided. The airflow guide has a curved first guide surface that guides air that has passed through the air cleaning filter to the humidifying element.

  In this air cleaner, by providing the airflow guide, it is easy to smoothly guide the air that has passed through the air cleaning filter to the humidifying element, and it is possible to guide the air to the humidifying element while suppressing pressure loss.

  In the air cleaner according to another aspect of the present invention, the airflow guide is formed integrally with a filter case that houses at least a part of the air purification filter.

  In this air purifier, since the filter case that houses the air purifying filter and the airflow guide are integrally formed, it is easy to guide the air that has passed through the air purifying filter to the humidifying element without escaping to another path. is there.

  The air cleaner which concerns on the other viewpoint of this invention is further arrange | positioned under the humidification element, and is further provided with the water storage tray which stores the water supplied to a humidification element. The water storage tray has a curved second guide surface that guides the air that has passed through the air purification filter to the humidifying element at the bottom of the water storage tray.

  In this air purifier, by providing the second guide surface at the lower part of the water storage tray, it is easy to smoothly guide the air that has passed through the air purifying filter to the humidifying element, and to the humidifying element while suppressing pressure loss. And can lead the air.

  The air cleaner which concerns on the 5th viewpoint of this invention is an air cleaner which concerns on a 4th viewpoint, Comprising: A water storage tray guides the air which passed the air purification filter to the humidification element to the lower part of a water storage tray. A curved second guide surface is provided. The first guide surface and the second guide surface draw a continuous curve with a gap in between.

  In this air cleaner, the first guide surface and the second guide surface draw a continuous curve, so that it is easy to smoothly guide the air that has passed through the air purification filter to the humidifying element, while suppressing pressure loss. Air can be directed to the humidifying element.

  The air cleaner which concerns on the 6th viewpoint of this invention is an air cleaner which concerns on a 4th viewpoint, Comprising: An airflow guide has the extension part formed so that the lower part by the side of the 2nd opening of a water storage tray might be covered. . The extension has a curved extension guide surface that guides air that has passed through the air cleaning filter to the humidifying element. The extended guide surface draws a continuous curve with the first guide surface.

  In this air purifier, the lower part on the second opening side of the water storage tray is covered with the air flow guide, and the air flow guide has the first guide surface and the extension guide surface that draw a continuous curve, and thus has passed through the air purification filter. The air can be guided to the humidifying element while suppressing the pressure loss without flowing the air through the gap generated between the airflow guide and the water storage tray.

  In the air cleaner according to another aspect of the present invention, a bypass opening is formed in the main casing above the second opening to guide air from the humidifying chamber to the outside of the main casing without passing the humidifying element.

  In this air purifier, since the bypass opening is provided above the second opening, a part of the air can be led out of the main body casing from the bypass opening with almost no pressure loss. Therefore, it is easy to pass a large amount of air through the air cleaning filter. Furthermore, since the first opening and the second opening are shifted from each other when viewed from above, a large amount of air is allowed to pass through the entire surface of the air purifying filter without unevenness, and dust is efficiently removed from the air. Processing can be performed.

  The air cleaner which concerns on the 7th viewpoint of this invention is an air cleaner which concerns on a 6th viewpoint from the 1st viewpoint, Comprising: The shape of the cross section of a main body casing is a square.

  In the air cleaner according to the first aspect of the present invention, the air sucked by the fan from below passes through the upper air cleaning filter and then blows out through the upper humidifying element. Since the fan as the sound source is located at the lowermost position, the fan sound tends to propagate from the bottom to the top as well as the air flow. Therefore, when the fan output is large, the sound emitted from the fan is attenuated by the air purifying filter and the humidifying filter, so that the noise is suppressed. Further, since the main casing has a vertically extending shape, the installation area is reduced. Furthermore, since the humidifying element that requires maintenance is located above, maintenance work is facilitated.

  In the air cleaner according to another aspect of the present invention, the overlap between the first opening and the second opening in the top view is made zero or reduced, so that when the air passes through the air cleaning filter, The velocity distribution becomes a wider distribution, and the portion where the air does not pass or the velocity becomes extremely small decreases.

  In the air cleaner according to another aspect of the present invention, the heavy fan motor and the water storage tank are separated from each other in the opposite directions (left and right or front and rear) rather than being biased to the same side in a top view. , The upright stability of the body is good.

  In the air cleaner according to another aspect of the present invention, since the second opening is set to be larger than the first opening, and they are shifted in top view, the overlapping portion becomes zero or shrinks. The velocity distribution when the air passes through the air purifying filter has a wider distribution, and the portion where the air does not pass or the velocity becomes extremely small decreases.

  In the air cleaner according to the third aspect of the present invention, the air volume is stable because the fan is a sirocco fan.

  In the air cleaner according to the fourth aspect of the present invention, it is easy to smoothly guide the air that has passed through the air cleaning filter to the humidifying element, and the air can be guided to the humidifying element while suppressing pressure loss.

  In the air cleaner according to another aspect of the present invention, since the filter case and the airflow guide are integrally formed, it is easy to guide the air that has passed through the air cleaning filter to the humidifying element without escaping to another path. It is.

  In the air cleaner according to the fifth aspect of the present invention, it is easy to smoothly guide the air that has passed through the air cleaning filter to the humidifying element, and the air can be guided to the humidifying element while suppressing pressure loss.

  In the air cleaner according to the sixth aspect of the present invention, the air that has passed through the air purification filter is guided to the humidifying element while suppressing pressure loss without flowing through the gap generated between the airflow guide and the water storage tray. be able to.

  In the air cleaner according to another aspect of the present invention, it is possible to efficiently remove dust from the air by allowing a large amount of air to pass through the entire surface of the air purifying filter without deviation.

It is a perspective view of the said air cleaner when the air cleaner which concerns on 1st Embodiment of this invention is seen from diagonally forward. It is sectional drawing of an air cleaner. It is a horizontal projection figure of the 1st opening and the 2nd opening in an air cleaner. It is a horizontal projection figure of the 1st opening and 2nd opening of an air cleaner smaller than the air cleaner of FIG. FIG. 4 is a velocity distribution diagram of air after passing through the air cleaning filter when the first opening and the second opening are displaced from each other as viewed from above as shown in FIG. 3. FIG. 6 is a velocity distribution diagram of air after passing through an air cleaning filter when the second opening completely overlaps the first opening side in a top view. It is a perspective view of the air cleaner which concerns on 2nd Embodiment of this invention. It is sectional drawing of the VII-VII arrow of the air cleaner which concerns on FIG. It is sectional drawing which looked at the inside of an air cleaner from the right side. It is sectional drawing of the VIII-VIII arrow of the air cleaner which concerns on FIG. It is sectional drawing which looked at the inside of an air cleaner from the front. It is the figure which looked at the periphery of the humidification element accommodated in the casing of the air cleaner which concerns on FIG. 6 from upper direction. It is drawing for demonstrating the structure of the fan periphery of the air cleaner which concerns on FIG. 6, and the direction of the flow of the air which blows off from a fan. It is a top view of the dust collection filter used in the air cleaner which concerns on FIG. It is the figure which showed typically the direction of the air which passes the dust collection filter which concerns on FIG. (A) is the figure which showed typically the direction of the air which passes a dust collection filter about the case where the crease | fold of a dust collection filter and the direction (rotation-axis direction of a fan) where the tongue part of a scroll casing extends orthogonally. is there. (B) is the figure which showed typically the direction of the air which passes a dust collection filter about the case where the crease | fold of a dust collection filter and the direction where the tongue part of a scroll casing extends are parallel. It is the perspective view which looked at the filter case which accommodated the deodorizing filter of the air cleaner which concerns on FIG. 6 from the left front. It is the perspective view which looked at the filter case which concerns on FIG. 13 from the right front. It is drawing for demonstrating the deodorizing filter detection sensor provided adjacent to the filter case which concerns on FIG. (A) has shown the state of the deodorizing filter detection sensor in case the deodorizing filter is not accommodated in the filter case. (B) has shown the state of the deodorizing filter detection sensor in case the deodorizing filter is accommodated in the filter case. It is a figure for demonstrating attachment to the casing of the humidification tray of the air cleaner which concerns on FIG. 6, and the connection of the rotor rotating shaft of a humidification element, and the drive shaft of a humidification motor. It is a figure for demonstrating the flow of the air in the air cleaner which concerns on FIG. FIG. 17 illustrates the flow of air using a cross-sectional view of the inside of the casing as viewed from the front. It is a figure for demonstrating the flow of the air around the humidification unit and bypass opening of the air cleaner which concerns on FIG. The illustration of the humidifying element is omitted. It is sectional drawing which looked at the removal process of the humidification unit and air purifying filter of the air cleaner which concerns on FIG. 6 from the front. (A) has shown the state before removal of a humidification unit and an air purifying filter. (B) has shown the state of removal of the humidification tank of a humidification unit. (C) has shown the state of removal of the humidification tray of a humidification unit. (D) has shown the state of removal of the deodorizing filter of an air purifying filter. (E) has shown the state of removal of the dust collection filter of an air purifying filter. It is the schematic perspective view which looked at the removal process of the humidification unit of the air cleaner which concerns on FIG. 6 from the left front. (A) has shown the state before removal of a humidification unit. (B) has shown the state of removal of a humidification tank. (C) has shown the state which removed the humidification tank. (D) has shown the state of removal of a humidification tray. In the air cleaner which concerns on FIG. 6, it is the figure which drawn typically the state which attached the filter case, without attaching a dust collection filter. It is sectional drawing which looked at the inside of the air cleaner which concerns on the modification F from the right side. In the air purifier according to Modification F, a humidifying rotor-shaking system is adopted for the humidifying unit. It is the perspective view which looked at the filter case which accommodated the deodorizing filter of the air cleaner concerning modification G from the left front. It is sectional drawing which looked at the inside of the air cleaner which concerns on the modification G from the front.

  Embodiments of the present invention will be described below with reference to the drawings. The following embodiments are specific examples of the present invention and do not limit the technical scope of the present invention.

<First Embodiment>
(1) Whole structure of air cleaner 10 FIG. 1: is a perspective view of the said air cleaner 10 when the air cleaner 10 which concerns on 1st Embodiment of this invention is seen from diagonally forward. Note that FIG. 1 is illustrated in a manner in which the four vertical sides are removed so that the internal structure can be seen.

  FIG. 2 is a cross-sectional view of the air cleaner 10. 1 and 2, the air cleaner 10 includes a quadrangular columnar main body casing 31. The air cleaner 10 has a humidifying function and an air cleaning function, and the user can select only the air cleaning function. However, when the humidifying function is selected, the air purifying function is accompanied.

(2) Detailed configuration (2-1) Main body casing 31
The main body casing 31 has a blower chamber 31a, an air cleaning chamber 31b, and a humidification chamber 31c, which are arranged in this order from the bottom to the top in the order of the blower chamber 31a, the air cleaning chamber 31b, and the humidification chamber 31c. That is, since the main body casing 31 has a vertically extending shape, the installation area is reduced.

  A blower 28 is disposed in the blower chamber 31a. An air cleaning filter 22 is disposed in the air cleaning chamber 31b. The humidifying element 24, the tray 34, and the tank 40 are disposed in the humidifying chamber 31c. That is, since the humidifying element 24 requiring maintenance is positioned above, maintenance work is facilitated. The tank 40 is detachable from a side door (not shown).

  Moreover, the 1st opening 311 is provided between the ventilation chamber 31a and the air purifying chamber 31b. The first opening 311 allows air to pass from the blower chamber 31a to the air cleaning chamber 31b. Further, a second opening 312 is provided between the air cleaning chamber 31b and the humidification chamber 31c. The second opening 312 allows air to pass from the air cleaning chamber 31b to the humidification chamber 31c.

  FIG. 3 is a horizontal projection of the first opening 311 and the second opening 312 in the air cleaner 10. FIG. 4 is a horizontal projection of the first opening 311 and the second opening 312 of the air cleaner that is smaller than the air cleaner 10 of FIG.

  3 and 4, the square drawn on the outside indicates the outline of the air cleaning chamber 31b. In addition, the rectangle located on the left side in the top view within the outline of the air cleaning chamber 31b indicates the second opening 312. Further, a square located next to the second opening 312 indicates the first opening 311.

  The area of the second opening 312 is set in the range of 40% to 50% of the horizontal projection area of the air cleaning chamber 31b. The area of the first opening 311 is set in a range of 20% to 30% of the horizontal projection area of the air cleaning chamber 31b.

  3 and 4, the first opening 311 and the second opening 312 are displaced in a direction away from each other when viewed from above, so that the overlapping area between the first opening 311 and the second opening 312 when viewed from above is reduced. Or it is set consciously to become zero.

(2-2) Blower 28
The blower 28 includes a fan rotor 25, a fan motor 26, and a scroll 27. The fan rotor 25 is a sirocco fan with a stable air volume, and includes a hub portion 251 and a plurality of blades 253 arranged in a cylindrical shape on the periphery of the hub portion 251 as shown in FIG. As the hub portion 251 and the blade 253 rotate, air is sucked along the rotation axis direction and blown out from the blade 253 in the centrifugal direction.

  The scroll 27 forms an air passage for guiding the air blown from the blades 253 to the fan outlet 27 b located above the fan rotor 25. Since the fan outlet 27b is fitted in the first opening 311 between the air blowing chamber 31a and the air cleaning chamber 31b, the air blown from the fan outlet 27b enters the air cleaning chamber 31b.

(2-3) Air purification filter 22
As shown in FIG. 1, the air purification filter 22 includes a pre-filter 224, a filter 226, and a deodorizing element 228. In the air cleaning chamber 31b, the pre-filter 224, the filter 226, and the deodorizing element 228 are held in this order from the upstream side of the air flow.

  The pre-filter 224 is a thin and soft resin net, and removes large dust particles contained in the air. The filter 226 removes fine dust that cannot be removed by the pre-filter 224. The deodorizing element 228 absorbs unpleasant odor components contained in the air.

  In the present embodiment, a hinge-type opening / closing door 315 is provided on one of the four side surfaces of the air cleaning chamber 31b in order to facilitate removal of the air cleaning filter 22 when performing maintenance work on the air cleaning filter 22. ing.

(2-4) Humidification element 24
The humidifying element 24 is disposed above the tray 34. The humidifying element 24 is formed in a loop shape and is supported on the inside so that a predetermined tension acts by two rollers separated in the vertical direction.

  For convenience of explanation, the lower roller of the two rollers is referred to as a first roller 241, and the upper roller is referred to as a second roller 242. The first roller 241 is immersed in the water of the tray 34 together with the lower portion of the humidifying element 24.

  A driven gear 245 is fixed on an extension line of the rotation shaft of the second roller 242. The driven gear 245 meshes with the driving gear 243. The drive gear 243 is fixed to a rotation shaft of a drive motor (not shown). Due to this positional relationship, when the tray 34 is pulled out from the tank 40 side, the meshing between the drive gear 243 and the driven gear 245 is eliminated. Conversely, when the tray 34 is inserted from the tank 40 side, the engagement between the drive gear 243 and the driven gear 245 is established.

  As the drive motor rotates, the rotational force is sequentially transmitted to the drive gear 243, the driven gear 245, and the second roller 242, and the humidifying element 24 circulates.

(2-5) Tray 34
The tray 34 has a tank receiver 34a and a water receiver 34b. The tank receiver 34a is provided with a support portion 341 and a push-in pin 343. The support portion 341 supports a predetermined corner of the tank 40 that has been mounted with the water supply valve facing downward. The push pin 343 contacts the water supply valve when the tank 40 is lowered by its own weight, and pushes the water supply valve open.

  The water receiver 34b stores water for immersing the humidifying element 24 therein. The water receiver 34b and the tank receiver 34a are partitioned by a partition wall 345. The partition wall 345 is provided with a notch, and water flowing from the tank 40 to the tank receiver 34a passes through the notch. The water flows to 34b and fills up to a predetermined water level in the water receiver 34b.

(2-6) Tank 40
A water supply valve 403 is attached to the water inlet 401 of the tank 40. The structure of the water supply valve 403 is a general structure in which the valve body is pressed against the valve port by a spring, and thus detailed description thereof is omitted here.

  In a normal use state, the tank 40 is placed on the tank receiver 34a of the tray 34, and is pressed against the push pin 343 of the tray 34 in a state where the water supply valve 403 is directed vertically downward. The pushing pin 343 opens the water supply valve 403 by its own weight.

(2-7) Others In FIG. 2, the heavy fan motor 26 is disposed on the left side of the blower chamber 31a as viewed from the front in FIG. Similarly, the heavy tank 40 is arranged on the right side of the humidification chamber 31c as viewed from the front in FIG. That is, the heavy fan motor 26 and the tank 40 are not biased to the same side in a top view and are separated in opposite directions (left and right or front and rear), so that the weight balance is good.

(3) Operation of Air Cleaner 10 (3-1) Air Cleaner Operation The operation of the air cleaner 10 configured as described above will be described below. When the power of the air cleaner 10 is turned on, the fan motor 26 of the blower 28 rotates the fan rotor 25. Since the rotating fan rotor 25 blows out air in the centrifugal direction, the pressure around the rotation axis is reduced, and the air is sucked into the fan suction port 27 a located at the center of the fan rotor 25. As a result, an air flow from the suction port 10a toward the fan suction port 27a is generated.

  The air blown out in the centrifugal direction from the fan rotor 25 is directed toward the fan outlet 27 b while being deflected along the scroll 27. Since the fan outlet 27b is fitted in the first opening 311, the air blown from the fan outlet 27b enters the air cleaning chamber 31b.

  The air passing through the air purifying filter 22 is first removed from the upstream pre-filter 224 by dust having relatively large particles contained therein, and then from the downstream filter 226 by which dust having small particles is removed. The When the air that has passed through the filter 226 passes further through the deodorizing element 228 on the downstream side, an unpleasant odor component contained in the air is adsorbed by the deodorizing element 228. The air that has passed through the air cleaning filter 22 passes through the second opening 312 and enters the humidification chamber 31c.

  Here, in the air cleaning chamber 31 b, a static pressure acts on the entire surface of the air cleaning filter 22 by the air pushed from the air blowing chamber 31 a, and the air passes through the air cleaning filter 22. At this time, the speed of air in the portion of the air cleaning filter 22 facing the first opening 311 is increased.

  FIG. 5A is a velocity distribution diagram of air after passing through the air cleaning filter 22 when the first opening 311 and the second opening 312 as shown in FIG. 5B is a velocity distribution diagram of air after passing through the air cleaning filter 22 when the second opening 312 completely overlaps the first opening 311 side in a top view.

  If the first opening 311 and the second opening 312 are completely overlapped in the top view, as shown in FIG. 5B, the speed of passing through the air purifying filter 22 at the overlapping portion is increased, and the speed distribution is Only the overlapping portion protrudes, and at a position far from the overlapping portion, air does not pass or the velocity tends to be extremely small.

  However, in this air cleaner 10, as shown in FIGS. 3 and 4, since the first opening 311 and the second opening 312 are shifted in top view, the overlapping portion is reduced or made zero. As shown in FIG. 5A, the velocity distribution when air passes through the air cleaning filter 22 has a broader distribution, and the portion where the air does not pass or the velocity becomes extremely small decreases.

(3-2) Humidification operation When the humidification function is turned on while the power of the air cleaner 10 is turned on, the humidification element 24 circulates. Since the lower portion of the humidifying element 24 is immersed in the water of the tray 34, the water of the tray 34 is sucked up by the circulation of the humidifying element 24.

  The air that has entered the humidifying chamber 31c from the air cleaning chamber 31b promotes vaporization of the water sucked up by the humidifying element 24, and becomes humidified air. This humidified air is blown out from the outlet 10b.

(4) Features (4-1)
In this air cleaner 10, after the air sucked by the fan rotor 25 from the lower air blowing chamber 31a passes through the air cleaning filter 22 of the upper air cleaning chamber 31b, the humidifying element 24 of the upper humidifying chamber 31c is further moved. It passes and is blown out. Since the air blower 28 which is a sound source is located at the lowest position, when the output of the fan motor 26 is large, the sound emitted from the fan motor 26 and the fan rotor 25 is attenuated by the air purifying filter 22 and the humidifying element 24, so that the noise Is suppressed.

(4-2)
In the air cleaner 10, static pressure acts on the entire surface of the air cleaning filter 22 by the air that has entered the air cleaning chamber 31 b, and the air passes through the air cleaning filter 22. Since the first opening 311 between the air blowing chamber 31a and the air cleaning chamber 31b and the second opening 312 between the air cleaning chamber 31b and the humidifying chamber 31c are displaced in a top view, compared to those not displaced. Thus, the velocity distribution when the air passes through the air cleaning filter 22 becomes a wider distribution, and the portion where the air does not pass or the velocity becomes extremely small decreases.

(4-3)
Since the heavy fan motor 26 and the tank 40 are not biased to the same side in a top view and are separated in opposite directions (left and right or front and rear), the upright stability of the main casing 31 is good.

(4-4)
Since the air blown out from the fan outlet 27b passes through the first opening 311, the air passing speed tends to be high at a portion facing the first opening 311 in the air cleaning filter 22, and a part of the speed distribution tends to be projected. is there. However, when the second opening 312 is set to be larger than the first opening 311 and they are shifted in top view, the overlapping portion becomes zero or shrinks, so that the air passes through the air cleaning filter 22. In this case, the velocity distribution has a wider distribution and the portion where air does not pass or the velocity becomes extremely small decreases.

Second Embodiment
The air cleaner 510 according to the second embodiment of the present invention will be described below.

(1) Whole structure of air cleaner FIG. 6: is an external appearance perspective view of the air cleaner 510 which concerns on 2nd Embodiment of this invention. In the following description, expressions such as “front (front)”, “rear (back)”, “right”, “left”, “up”, and “down” may be used to describe the direction and arrangement. If there is no special mention, the direction, arrangement, etc. are represented according to the arrows shown in FIG. 7 to 9 and FIGS. 17 to 19 also show arrows representing “front”, “rear”, “right”, “left”, “upper”, and “lower”. The direction indicated by the arrows in FIGS. 9 and 17 to 19 is the same as the direction indicated by the arrows in FIG.

  FIG. 7 is a cross-sectional view of the air cleaner 510 shown in FIG. That is, FIG. 7 is a view of the inside of the air purifier 510 of FIG. 6 as viewed from the right side. FIG. 8 is a cross-sectional view of the air cleaner 510 shown in FIG. That is, FIG. 8 is a view of the inside of the air purifier 510 of FIG. 6 as viewed from the front side.

  The air purifier 510 according to the present embodiment has an air purifying function and a humidifying function (humidity adjusting function). The air purifier 510 has a configuration capable of selectively executing the humidification function (configuration capable of turning on / off the humidification function). Specifically, when the user selects the humidification function (when the humidification function is turned on), both the air purification function and the humidification function of the air purifier 510 function effectively. On the other hand, when the user does not select the humidification function (when the humidification function is turned off), only the air purification function of the air cleaner 510 functions effectively. However, the present invention is not limited to this, and the air purifier 510 may always function the air purifying function and the humidifying function effectively. However, it is easier to ensure the user's comfort when the humidifying function is selectively executed.

  The air purifier 510 mainly includes a casing 511 (see FIG. 6), a blower 512 (see FIG. 7), an air purifying filter 520 (see FIG. 7), a filter case 523 (see FIG. 8), and a filter detection sensor 525 (see FIG. 8) and a humidification unit 530 (see FIG. 8). The casing 511 accommodates a blower 512, an air purification filter 520, a filter case 523, a filter detection sensor 525, and a humidification unit 530. The blower 512 takes in air from the outside of the casing 511 and sends the air to the air purification filter 520 and the humidification unit 530. The air cleaning filter 520 removes dust contained in the air and removes odorous components contained in the air. The filter case 523 accommodates a deodorizing filter 522 of the air purification filter 520 described later. The filter detection sensor 525 detects whether or not the deodorizing filter 522 of the air purification filter 520 is attached to the casing 511. The humidification unit 530 vaporizes the supplied water and humidifies the air.

(2) Detailed Configuration The details of the casing 511, the blower 512, the air cleaning filter 520, the filter case 523, the filter detection sensor 525, and the humidification unit 530, which are the main configurations of the air cleaner 510, will be described below.

(2-1) Casing The casing 511 houses components and components of the air cleaner 510 such as the blower 512, the air cleaning filter 520, the filter case 523, the filter detection sensor 525, and the humidification unit 530. The casing 511 is formed in a rectangular column shape whose appearance is a vertically long shape, in other words, a rectangular column shape that extends long in the vertical direction. Inside the casing 511, a space for accommodating component devices and components is formed. A control panel 513 is provided above the side surface of the casing 511 (upper front surface) as shown in FIG. The control panel 513 is provided with various switches (for example, a power switch and a function selection switch) for operating the air cleaner 510. The control panel 513 is connected to a control device (not shown) built in the casing 511. Various commands received by the control panel 513 are transmitted as signals to the control device. The control device controls the operation of the air purifier 510 based on commands received by the control panel 513 and detection results of various sensors including the filter detection sensor 525.

  The inside of the casing 511 is mainly divided into three spaces, and an air blowing chamber S1, an air cleaning chamber S2, and a humidifying chamber S3 are formed (see FIGS. 7 and 8).

  A blower 512 is disposed in the blower chamber S1 (see FIGS. 7 and 8). An air cleaning filter 520 is disposed in the air cleaning chamber S2 (see FIGS. 7 and 8). A humidification unit 530 is disposed in the humidification chamber S3 (see FIGS. 7 and 8). The blower chamber S1, the air cleaning chamber S2, and the humidification chamber S3 are arranged in order from the bottom to the top (see FIGS. 7 and 8). In other words, in the casing 511 of the air purifier 510, a blower 512, an air purifying filter 520, and a humidifying element 533 (see FIG. 7) of a humidifying unit 530 described later are arranged in this order from the bottom. Here, the humidifying unit 530 that requires maintenance is arranged above the easy-to-work, and the humidifying unit 530 can be accessed through an opening 515 (described later) provided on the upper left surface of the casing 511, so that maintenance work is easy. It is.

  A first opening K1 is provided between the blower chamber S1 and the air cleaning chamber S2 (see FIG. 8). The first opening K1 allows air to pass from the blower chamber S1 to the air cleaning chamber S2. Further, a second opening K2 is provided between the air cleaning chamber S2 and the humidification chamber S3 (see FIG. 8). The second opening K2 allows air to pass from the air cleaning chamber S2 to the humidifying chamber S3.

  The area and arrangement of the first opening K1 and the second opening K2 are the same as the area and arrangement of the first opening 311 and the second opening 312 in the air cleaner 10 of the first embodiment.

  That is, the projected area of the first opening K1 when the first opening K1 is projected onto the horizontal plane is set to a range of 20% to 30% of the horizontal projected area of the air cleaning chamber S2. Further, the projected area of the second opening K2 when the second opening K2 is projected onto the horizontal plane is set in a range of 40% to 50% of the horizontal projected area of the air cleaning chamber S2.

  Further, the first opening K1 and the second opening K2 are displaced in a direction away from each other when viewed from above (the same as the arrangement of the first opening 311 and the second opening 312 in FIGS. 3 and 4, (Omitted). Specifically, the first opening K1 is mainly disposed on the left side, while the second opening K2 is disposed on the right side. In other words, the 1st opening K1 has shifted | deviated to the left with respect to the center of the air purifying filter 520 mentioned later. On the other hand, the second opening K2 is shifted rightward (to the side opposite to the first opening K1) with respect to the center of an air purification filter 520 described later. The arrangement of the first opening K1 and the second opening K2 in the top view is designed so that the overlapping area between the first opening K1 and the second opening K2 is small in the top view, or the overlapping area is zero. ing.

  As shown in FIG. 6, the casing 511 is provided with a suction port 511a and a blower outlet 511b. The inlet 511a and the outlet 511b are openings formed in a rectangular shape.

  The suction port 511a is an opening for sucking air outside the casing 511 into the casing 511. The suction ports 511a are respectively provided at the lower left portion and the lower right portion of the casing 511 (see FIG. 8). The suction port 511a is provided with an inner lattice 511aa and a suction grill 511ab for preventing a user's finger and foreign matter from entering (see FIG. 8). The inner lattice 511aa is disposed inside the suction grill 511ab provided on the outer surface side of the casing 511 (see FIG. 8). In addition, a pre-filter 511ac for removing large dust from the air taken into the casing 511 is provided inside the suction grill 511ab (see FIG. 8).

  The outlet 511b is an opening for blowing out air that has passed through the inside of the casing 511. That is, the air outlet 511b is an air outlet of the casing 511. From the blower outlet 511b, the air after the air purification by the air purification filter 520 or the air humidified by the humidification unit 530 after the air purification by the air purification filter 520 is blown out. The blower outlet 511b is provided in the upper surface (ceiling part) of the casing 511, as shown in FIG. The blower outlet 511b is provided with a metal mesh 511ba and a blowout grill 511bb for preventing a user's finger and foreign matter from entering (see FIG. 8). The metal mesh 511ba is disposed on the inner side (lower side) of the blowing grill 511bb provided on the outer surface side of the casing 511 (see FIG. 8).

  An opening 515 is formed in the upper left surface of the casing 511 (see FIGS. 8 and 20D). The opening 515 can be opened and closed by attaching / detaching the first side plate 511c and the second side plate 511d (see FIG. 6). The first side plate 511c is formed integrally with a humidification tank 531 of a humidification unit 530 described later (see FIG. 8). The second side plate 511d constitutes a part (left side wall) of a humidifying tray 532 of the humidifying unit 530 described later (see FIG. 8). The first side plate 511c is formed with a handle 511ca that is used when the first side plate 511c is attached / detached (when the humidifying tank 531 is attached / detached) (see FIG. 6). The second side plate 511d is formed with a handle 511da used when the second side plate 511d is attached / detached (when the humidifying tray 532 is attached / detached) (see FIG. 6).

  The opening 515 is an opening for attaching and detaching the configuration accommodated in the casing 511. Specifically, the opening 515 is an opening used for attaching / detaching (attaching / detaching) the humidifying unit 530 and the air purifying filter 520 in the casing 511. Here, the work opening dedicated for maintenance of the humidification unit 530 and the work opening dedicated for maintenance of the air cleaning filter 520 are not provided separately, but from one opening 515, the humidification unit 530 and the air cleaning filter 520 are provided. It is configured to be accessible to both. Therefore, it is easy to improve the airtightness of the casing 511 and prevent air from flowing out from a gap generated in the maintenance opening. The attachment / detachment of the humidifying unit 530 and the air cleaning filter 520 from the opening 515 will be described later.

  Inside the casing 511, a flange portion 511e for placing a dust collection filter 521 of an air purification filter 520 described later is provided (see FIGS. 7 and 8). The flange portion 511e is provided on the inner wall of the casing 511 in the air cleaning chamber S2. The flange portion 511e is a horizontal support surface that supports the dust collection filter 521 from below. The flange portion 511e is disposed below the dust collection filter 521 of the air cleaning filter 520, in other words, on the upstream side in the air flow direction (see FIGS. 7 and 8).

  The flange portion 511 e is provided over the entire circumference of the inner wall of the casing 511. The flange portion 511e is in close contact with the lower surface 521ba (see FIG. 7) of the peripheral edge portion 521b (see FIG. 11) of the dust collection filter 521 of the air cleaning filter 520, and seals the gap between the dust collection filter 521 and the casing 511. It functions as a sealing means. Note that, for example, a resin sealing member (not shown) may be disposed between the flange portion 511e and the air purification filter 520 in order to further improve the sealing performance of the gap between the dust collection filter 521 and the casing 511. Good.

  Inside the casing 511, a support portion 511f for placing a filter case 523 in which a deodorizing filter 522 of an air purification filter 520 described later is accommodated is provided (see FIG. 8). The support portion 511f is provided on the inner wall on the left side of the casing 511 in the air cleaning chamber S2 (see FIG. 8). The support portion 511f is provided above the flange portion 511e (see FIG. 8). The support portion 511f is a horizontal support surface that supports the filter case 523 in which the deodorizing filter 522 is accommodated from below (see FIG. 8).

  Further, the inner wall of the casing 511 is provided with a concave portion 511g that engages with a convex portion 523a provided on a filter case 523 described later (see FIG. 8). Two recesses 511g are provided on the inner wall on the right side of the casing 511. Each concave portion 511g is formed so that one of two convex portions 523a (see FIG. 14) provided in the filter case 523 is fitted. The concave portion 511g is provided above the flange portion 511e (see FIG. 8). In addition, the recess 511g is configured so that the protrusion 523a provided on the right side of the filter case 523 is engaged with the recess 511g and the left side of the filter case 523 is placed on the support 511f. It is provided at a position that is almost horizontal. In a state where the filter case 523 is attached to the casing 511 (a state where the convex portion 523a is engaged with the concave portion 511g and the left side of the filter case 523 is placed on the support portion 511f), the lower surface of the filter case 523 is Then, it comes into contact with an upper surface 521bb (see FIG. 7) of a peripheral edge portion 521b (see FIG. 11) of a dust collection filter 521 described later. The attachment of the filter case 523 to the casing 511 will be described later.

  A rectifying plate 511h is provided inside the casing 511 (see FIG. 8). As shown in FIG. 8, the current plate 511h is provided in the humidification chamber S3. The rectifying plate 511h is provided above the second opening K2. The rectifying plate 511h is disposed adjacent to the humidifying element 533 on the right side of the humidifying element 533 described later in the humidifying chamber S3. The rectifying plate 511h has a flat surface formed so as to gradually increase from the right side toward the left side. The rectifying plate 511h guides the flow of air that has flowed into the humidification chamber S3 from the second opening K2 to the humidification element 533.

  On the other hand, a bypass opening 511ha is formed in the rectifying plate 511h (see FIG. 18). The bypass opening 511ha is disposed above the second opening K2 (see FIG. 18). The bypass opening 511ha guides a part of the air that has passed through the air cleaning filter 520 from the humidifying chamber S3 to the outside of the casing 511 without passing the humidifying element 533, as indicated by a one-dot chain line arrow in FIG. By providing the bypass opening 511ha in this manner, the flow rate of the air passing through the air cleaning filter 520 can be increased compared to the case where all the air is led to the humidifying element 533 having a relatively large pressure loss. In addition, the ion generator 540 is provided in the surface on the opposite side to humidification chamber S3 of the baffle plate 511h (refer FIG. 8). When the operation of the ion generator 540 is instructed through the control panel 513, the ion generator 540 generates plasma ions. Plasma ions are guided out of the casing 511 by air that passes through the bypass opening 511ha and blows out of the casing 511.

(2-2) Blower The blower 512 is disposed in the blower chamber S1 (see FIG. 8). The blower 512 is a device that takes the air outside the casing 511 into the blower chamber S1 and blows it to the air cleaning chamber S2 and the humidifying chamber S3. That is, the blower 512 is a device that blows air to the air purification filter 520 and the humidification unit 530 (humidification element 533).

  The blower 512 mainly includes a fan 512a, a fan motor 512b, and a scroll casing 512c (see FIG. 8). The fan 512a is disposed on the left side of the blower chamber S1, and the fan motor 512b is disposed on the right side of the blower chamber S1 (see FIG. 8). The scroll casing 512c forms an air passage for guiding the air blown out by the fan 512a to the first opening K1 located above the fan 512a.

  The fan 512a is a sirocco fan whose air volume is stable. The fan 512a has a hub portion 512aa and a plurality of blades 512ab (see FIG. 10). The plurality of blades 512ab are arranged in a cylindrical shape on the periphery of the hub portion 512aa. The fan 512a is driven by the fan motor 512b, and the hub portion 512aa and the plurality of blades 512ab rotate, whereby air is sucked into the fan 512a along the rotation axis direction. At this time, air is taken into the blower chamber S1 from the outside of the casing 511 through the suction port 511a. In the fan 512a, air is blown out in the centrifugal direction from the plurality of blades 512ab. The air blown in the centrifugal direction from the plurality of blades 512ab is guided through the scroll casing 512c to the first opening K1 and sent to the air cleaning chamber S2.

  Since air is blown out in the centrifugal direction from the plurality of blades 512ab as described above, the dust collection filter 521 of the air cleaning filter 520 is not upward, as indicated by the dashed line arrow in FIG. Air flows obliquely upward.

(2-3) Air Purifying Filter The air cleaning filter 520 cleans the air sucked into the air purifier 510. Specifically, the air cleaning filter 520 removes dust contained in the air. The air cleaning filter 520 removes components that cause odors.

  The air purification filter 520 is disposed in the air purification chamber S2 (see FIG. 8). The air purifying filter 520 is disposed above the blower 512 and is disposed below the humidifying unit 530 (see FIG. 8). In addition, the air purification filter 520 is disposed on the downstream side of the blower 512 and is disposed on the upstream side of the humidification unit 530 in the air flow direction.

  The air purification filter 520 mainly includes a dust collection filter 521 and a deodorization filter 522 (see FIG. 7). The dust collection filter 521 removes dust contained in the air. The deodorizing filter 522 removes components that cause odors contained in the air.

  The deodorizing filter 522 is disposed above the dust collection filter 521. In other words, the deodorizing filter 522 is disposed downstream of the dust collection filter 521 in the air flow direction.

  The thickness direction of the dust collection filter 521 and the deodorizing filter 522 is the vertical direction. In other words, the air purification filter 520 has the vertical direction as the thickness direction. Air passes through the air cleaning filter 520 mainly in the thickness direction. In other words, the air purification filter 520 is disposed so that the air purification filter 520 (the dust collection filter 521 and the deodorization filter 522) spreads in a direction orthogonal to the air passage direction.

(2-3-1) Dust Collection Filter The dust collection filter 521 is a filter for removing fine dust that has not been removed by the pre-filter 511ac provided in the suction port 511a. The dust collection filter 521 is formed in a rectangular shape. The horizontal projection area of the filter portion (portion through which air passes) of the dust collection filter 521 is designed to be 80% or more of the horizontal projection area of the air cleaning chamber S2.

  As the dust collection filter 521, a pleated filter which is folded at a plurality of folds 521a and formed with a plurality of “pleats” is used (see FIG. 11). When the dust collection filter 521 is cut along a cross section orthogonal to the fold line 521a, the cross section is formed into a shape having a plurality of continuous peaks and valleys as shown in FIG. By using the pleated filter, a larger surface area (ventilation area) of the dust collection filter 521 can be secured with the same installation area than in the case of using a filter on a flat plate on which “pleats” are not formed.

  In the dust collection filter 521, the direction in which the pleat filter fold 521a extends and the direction in which the tongue 512ca of the scroll casing 512c of the blower 512 extends, in other words, the direction of the rotation axis of the fan 512a of the blower 512, are orthogonal. As shown, it is placed on the flange portion 511e. Therefore, the direction in which the fold line 521a of the dust collection filter 521 extends and the horizontal component of the air blown from the scroll casing 512c of the blower 512 are substantially parallel. If it demonstrates using a figure, when air blows off from the scroll casing 512c to the direction of vector A (diagonally upward) like FIG. 10, the direction where the crease | fold 521a of the dust collection filter 521 extends, and the horizontal direction of vector A The direction of the component Ah is substantially parallel. Note that the thickness direction of the dust collection filter 521 coincides with the direction of the vertical component Av of the vector A.

  The reason for installing the dust collection filter 521 in such a direction is as follows.

  Suppose that the dust collection filter 521 is placed on the flange 511e so that the direction in which the fold 521a of the pleat filter extends and the direction in which the tongue 512ca of the scroll casing 512c of the blower 512 extends are parallel to each other. . In this case, the direction of the direction in which the fold line 521a extends and the horizontal component of the air blown from the scroll casing 512c are substantially orthogonal. Therefore, as shown by the one-dot chain line arrow in FIG. 12B, the air blown obliquely upward tends to pass through the dust collection filter 521 while being biased. For example, if it demonstrates using FIG.12 (b), it will become easy for air to pass only through the slope which becomes high toward the right from the left in FIG.12 (b). Therefore, the entire surface of the dust collection filter 521 cannot be used for dust collection.

  In contrast, in the air cleaner 510 of the present embodiment, the direction of the fold line 521a and the horizontal component of the air blown out from the scroll casing 512c are substantially parallel, and therefore, the dashed line in FIG. As shown by the arrows, it is easy to flow air over the entire surface of the dust collection filter 521, and structural pressure loss can be suppressed.

  Note that when a sufficient distance from the fan 512a to the dust collecting filter 521 is secured, the above problems are alleviated, and a fan of a type in which wind blows in the centrifugal direction like a sirocco fan is used as the fan 512a. Even if it is done, air tends to flow upward into the dust collection filter 521. Therefore, it becomes easy to flow air over the entire surface of the dust collection filter 521 without depending on the direction of the dust collection filter 521. However, in order to reduce the size of the air purifier 510, it is preferable that the distance between the fan 512a and the dust collection filter 521 is short, and when the distance between the fan 512a and the dust collection filter 521 is short, as described above. It is preferable to arrange the dust collection filter 521 in any direction.

  As described above, the dust collection filter 521 of the air cleaning filter 520 is placed on the flange portion 511e formed inside the casing 511. In other words, the dust collection filter 521 of the air purification filter 520 is held in the casing 511 by the flange portion 511e. The flange portion 511e is in contact with the lower surface 521ba of the peripheral edge portion 521b (see FIG. 11) through which the air of the dust collection filter 521 does not pass (see FIG. 7), so that the clearance between the air purification filter 520 and the inner wall of the casing 511 is obtained. It functions as a sealing means for sealing. The sealing means ensures the sealing performance between the air cleaning filter 520 and the casing 511 when air is sent from the blower chamber S1 to the air cleaning chamber S2. The flange portion 511e is disposed on the upstream side of the air purification filter 520 in the air flow direction. In other words, the sealing means is disposed on the upstream side of the air purification filter 520 in the removal direction of the air purification filter 520. The attachment / detachment of the dust collection filter 521 to the casing 511 will be described later.

(2-3-2) Deodorizing Filter The deodorizing filter 522 is a filter that removes components that cause odors contained in air. The deodorizing filter 522 is a filter formed in a rectangular shape. The horizontal projection area of the filter portion (portion through which air passes) of the deodorizing filter 522 is designed to be 80% or more of the horizontal projection area of the air cleaning chamber S2.

  As shown in FIGS. 13 and 14, the deodorizing filter 522 is accommodated in a filter case 523 described later. The deodorizing filter 522 is configured to be detachable from the filter case 523. The attachment state of the filter case 523 to the casing 511 and the attachment / detachment of the deodorizing filter 522 (filter case 523) to the casing 511 will be described later. A filter detection sensor 525 for confirming the presence or absence of the deodorizing filter 522 will also be described later.

(2-4) Filter Case The filter case 523 accommodates the air purification filter 520. Specifically, the filter case 523 accommodates a deodorizing filter 522 that is a part of the air purification filter 520 (see FIG. 13).

  The filter case 523 is a rectangular ring-shaped member, and houses the deodorizing filter 522 inside. The filter case 523 has a side wall portion 523b having a substantially C-shaped cross section that surrounds and holds the peripheral edge portion of the accommodated deodorizing filter 522 from above and below and from the side (outer peripheral side) (see FIGS. 7 and 8). That is, the inner peripheral side of the side wall part 523b is open. The entire periphery of the deodorizing filter 522 is surrounded by the side wall portion 523b. The upper and lower surfaces of the filter case 523 are greatly opened, and the air that has passed through the dust collection filter 521 passes through the deodorizing filter 522 accommodated in the filter case 523 from below and blows out upward of the deodorizing filter 522.

  A convex portion 523 a that engages with a concave portion 511 g provided on the inner wall of the casing 511 is provided on the right surface of the side wall portion 523 b of the filter case 523. The convex portions 523a are provided at two locations on the right surface of the side wall portion 523b. In addition, the number of the convex parts 523a is an example, and is not limited thereto, and may be determined as appropriate. The number of the recesses 511g provided on the inner wall of the casing 511 may be appropriately determined according to the number of the protrusions 523a. Each convex portion 523a is formed so as to fit into one of two concave portions 511g (see FIG. 11) provided in the casing 511, respectively.

  In a state where the filter case 523 is attached to the casing 511, the convex portion 523 a is engaged with the concave portion 511 g, and the left surface side of the filter case 523 is placed on a support portion 511 f provided inside the casing 511. In other words, in a state where the filter case 523 is attached to the casing 511, the filter case 523 is supported from below by the concave portion 511g into which the convex portion 523a is fitted and the support portion 511f. When the filter case 523 is attached to the casing 511, the deodorizing filter 522 is attached to the casing 511 in a horizontal state, in other words, in a state where the thickness direction of the deodorizing filter 522 coincides with the vertical direction. The attachment / detachment of the filter case 523 to / from the casing 511 will be described later.

  A notch 523ba is formed in the left side center of the side wall 523b of the filter case 523 (see FIG. 13). In the cutout portion 523ba, the side wall portion 523b is cut out with the upper side (the upper side of the upper surface and the side surface) left (see FIG. 13). In a state where the deodorizing filter 522 is accommodated in the filter case 523, the deodorizing filter 522 is exposed at the notch 523ba.

  The filter case 523 includes an airflow guide 524 disposed above the air cleaning filter. The airflow guide 524 is formed integrally with the filter case 523.

  The airflow guide 524 is provided on the upper left side of the filter case 523 (see FIG. 8). The airflow guide 524 is provided above the first opening K <b> 1 formed in the casing 511. The airflow guide 524 has a vertical surface 524a extending upward from the left side of the front and rear side wall portions 523b, and a first guide surface 524b extending diagonally upward and right from the left side wall portion 523b (see FIG. 14). The 1st guide surface 524b is a curved surface for guiding the air which passed the deodorizing filter 522 of the air purifying filter 520 to the humidification element 533 of the humidification unit 530 mentioned later. By forming the first guide surface 524b with a smooth curved surface, the air that has passed through the deodorizing filter 522 can be guided to the second opening K2 and further to the humidifying element 533 while suppressing an increase in pressure loss. The vertical surface 524a of the airflow guide 524 passes upward through the gap before and after the first guide surface 524b of the airflow guide 524, and the air that has passed through the deodorizing filter 522 faces upward, and the gap between the casing 511 and a humidifying tray 532 described later. To flow out of the casing 511. The vertical surface 524 a and the first guide surface 524 b mainly guide the air that has passed through the left side of the deodorizing filter 522 to the humidifying element 533.

  A concave portion 524d is formed on the upper part of the airflow guide 524 so as to be recessed downward (see FIG. 14). The recess 524d is formed not only below but also below the upper surface 524c on the left side of the airflow guide 524 (see FIG. 14). The recess 524d functions as a handle that the user grips when attaching / removing the filter case 523.

  In a state where the air purification filter 520 and the humidifying unit 530 are attached to the casing 511, the upper surface 524c (see FIGS. 13 and 14) of the airflow guide 524 is in contact with the lower surface 532b of the humidifying tray 532 of the humidifying unit 530 described later (see FIG. 8). For this reason, even if air is blown from the blower 512 and a force that lifts (moves upward) the air purification filter 520 acts, the humidifying tray 532 restricts the upward movement of the air purification filter 520. That is, the lower surface 532 b of the humidifying tray 532 functions as a movement restricting unit that restricts the upward movement of the air purification filter 520.

(2-5) Filter Detection Sensor The filter detection sensor 525 (see FIG. 8) is a sensor that detects whether or not the air purification filter 520 is attached to the casing 511. Specifically, the filter detection sensor 525 is a sensor that detects whether or not the deodorizing filter 522 of the air purification filter 520 is attached to the casing 511.

  The filter detection sensor 525 mainly includes a detection lever 525a and a detection switch 525b (see FIGS. 15A and 15B). The detection lever 525a is configured to be rotatable around a rotation shaft 525c (see FIGS. 15A and 15B). One end of the detection lever 525a has a contact arm 525d that extends in a direction crossing the direction in which the detection lever 525a extends and contacts the deodorizing filter 522. A detection switch that contacts the detection switch 525b at the other end of the detection lever 525a (the end on the side where the contact arm 525d is provided is the end disposed on the opposite side of the rotation shaft 525c). A contact portion 525aa is provided. Here, the contact arm 525d extends in an arc shape from the detection lever 525a. However, the contact arm 525d is not limited to this, and the contact arm 525d may be formed to extend perpendicular to the extending direction of the detection lever 525a. Good.

  The detection lever 525a is configured such that a force acts in one direction around the rotation shaft 525c (so that the detection switch contact portion 525aa is separated from the detection switch 525b) by a torsion spring (not shown). In a state where the contact arm 525d is not in contact with the deodorizing filter 522 (a state where the deodorizing filter 522 is not accommodated in the filter case 523), as shown in FIG. 15 (a), it passes through the notch 523ba of the filter case 523. Thus, the contact arm 525d protrudes into the filter case 523. In this state, the detection switch contact portion 525aa of the detection lever 525a is not in contact with the detection switch 525b. Therefore, in a state where the deodorizing filter 522 is not accommodated in the filter case 523, a signal transmitted when the deodorizing filter 522 is present is not transmitted from the filter detection sensor 525 to the control device (not shown) of the air purifier 510. . In such a state, the control device determines that the deodorizing filter 522 is not attached to the air purifier 510, stops the operation of the air purifier 510, issues a warning that the deodorizing filter 522 is not attached, or the like. Execute the necessary control. Although illustration and description are omitted here, not only the deodorizing filter 522 but also the filter case 523 is not attached to the casing 511, the detection switch contact portion 525aa is not in contact with the detection switch 525b. Thus, the signal transmitted when the deodorizing filter 522 is present is not transmitted to the control device.

  On the other hand, in a state where the deodorizing filter 522 is accommodated in the filter case 523, the contact arm 525d comes into contact with the deodorizing filter 522 at the notch 523ba of the side wall 523b of the filter case 523. The detection lever 525a overcomes the force of a torsion spring (not shown) and rotates in a direction in which the detection switch contact portion 525aa of the detection lever 525a contacts the detection switch 525b. When the detection switch contact portion 525aa comes into contact with the detection switch 525b, the detection switch 525b is turned on, and a signal transmitted when the deodorizing filter 522 is present is transmitted from the filter detection sensor 525 to the control device of the air purifier 510. . When it is determined that the deodorizing filter 522 is attached to the air cleaner 510, the control device permits the operation of the air cleaner 510 if there is no other abnormality.

  In addition, although this air cleaner 510 is provided only with the filter detection sensor 525 which detects the presence or absence of the deodorizing filter 522 as a sensor for detecting the presence or absence of a filter, it is not limited to this. For example, a sensor using the same principle as the filter detection sensor 525 or another detection principle may be provided to detect the presence or absence of the dust collection filter 521. However, as will be described later, in the present air cleaner 510, when the dust collection filter 521 is not present, it is difficult to attach the filter case 523 containing the deodorization filter 522. It is possible to detect a state where the dust collection filter 521 is not attached only by detection.

(2-6) Humidification unit The humidification unit 530 vaporizes the supplied water to humidify the air. Specifically, the humidifying element 533 of the humidifying unit 530 vaporizes the supplied water to humidify the air. Humidification unit 530 is arranged downstream of blower 512 and air purification filter 520 in the air flow direction. That is, the humidification unit 530 humidifies the air cleaned by the air cleaning filter 520. The humidification unit 530 is a rotary humidification unit. In the humidifying unit 530, the peripheral edge of the humidifying element 533 is rotated so as to pass through the water stored in the humidifying tray 532, which will be described later, and the air is vaporized by vaporizing the water from the humidifying element 533 containing water. Humidify.

  The humidification unit 530 is arrange | positioned in the humidification chamber S3 in the casing 511 (refer FIG. 8). That is, the humidification unit 530 is arrange | positioned in the upper position in the casing 511 (refer FIG. 8). A humidifying tank 531, a humidifying tray 532, and a humidifying element 533, which will be described later, of the humidifying unit 530 are configured to be detachable from the casing 511. When the humidifying tank 531, the humidifying tray 532, and the humidifying element 533 are removed from the opening 515 (see FIG. 8) of the casing 511, a large space is formed at an upper position in the casing 511. Specifically, when the humidifying unit 530 is removed from the casing 511, a space in which the air purifying filter 520 can move is formed in the humidifying chamber S3. In other words, when the humidifying unit 530 is removed from the casing 511, a space serving as a movement path of the air cleaning filter 520 when the air cleaning filter 520 is removed is formed above the air cleaning chamber S2. The attachment / detachment of the air purification filter 520 will be described later.

  As shown in FIGS. 8 and 9, the humidifying unit 530 mainly includes a humidifying tank 531, a humidifying tray 532, and a humidifying element 533. Further, the humidifying unit 530 has a humidifying motor 534 for rotationally driving the humidifying element 533 (see FIG. 8). The humidifying motor 534 is installed in the casing 511. On the other hand, the humidification tank 531, the humidification tray 532, and the humidification element 533 are comprised so that removal from the casing 511 is possible.

(2-6-1) Humidification tank The humidification tank 531 stores water to be supplied to the humidification element 533. The humidification tank 531 is formed integrally with the first side plate 511c of the casing 511. Therefore, the humidification tank 531 is configured to be detached from the humidification unit 530 (humidification tray 532) by removing the first side plate 511c from the casing 511 (see FIG. 19B).

  The humidification tank 531 is disposed on the left side of the humidification tray 532. Since the humidifying tray 532 is disposed on the left side of the casing 511, the humidifying tank 531 is disposed on the left side of the casing 511.

  In the present air cleaner 510, as described above, the fan motor 512b of the blower 512, which is a heavy object, is disposed on the right side of the casing 511 (see FIG. 8). On the other hand, the humidification tank 531 which is a heavy article is arrange | positioned at the left side of the casing 511 (refer FIG. 8). That is, the fan motor 512b is shifted to one side (right side) with respect to the center of the air purification filter 520, and the humidification tank 531 is opposite to the one side with respect to the center of the air purification filter 520. It is shifted to the side (left side). Thus, since the heavy weight fan motor 512b and the humidification tank 531 are not biased to the same side in the top view and are separated in the opposite directions, the air cleaner 510 has a good weight balance.

  The humidification tank 531 has a water injection port 531a. A water supply valve (not shown) is attached to the water injection port 531a. Since the water supply valve has a general structure in which the valve body is pressed against the valve opening by a spring, detailed description of the water supply valve is omitted here.

  When in use, the humidification tank 531 is disposed in a tank receiving portion 532c, which will be described later, on the left side of the humidification tray 532. Specifically, the humidifying tank 531 is attached to the tank receiving portion 532c of the humidifying tray 532 with the water inlet 531a facing downward. When the humidifying tank 531 is mounted on the tank receiving portion 532c, a pushing pin (not shown) provided on the humidifying tray 532 is pressed against the water supply valve of the water injection port 531a facing downward. Then, due to the weight of the humidifying tank 531, the water supply valve is pushed by the push-in pin, the valve port is pushed open, and the water injection port 531a is opened. As a result, water is supplied to a humidifying tray 532 described later, and water for immersing the humidifying element 533 is accumulated up to a predetermined height of the humidifying tray 532.

  The humidification tank 531 is formed in a substantially rectangular shape when viewed from the right side (see FIG. 7). Further, when viewed from the front side, the humidifying tank 531 is formed in a planar shape extending substantially in the vertical direction on the left side (see FIG. 8). Further, when viewed from the front side, the humidifying tank 531 has a curved surface on the right side (see FIG. 8). The right side surface 531b (see FIG. 8) formed in a curved surface shape of the humidifying tank 531 functions as a guide surface that guides the air that has passed through the humidifying element 533 to the outlet 511b. Specifically, the lower portion of the right side surface 531b (right side lower portion 531ba) is a curved surface that is recessed to the lower left side. The right side lower portion 531ba is a curved surface formed so as to become higher toward the left side (see FIG. 8). The lower right side surface 531ba is a curved surface whose inclination changes so that the inclination is closer to the left side (see FIG. 8). The upper part (right side upper part 531bb) of the right side 531b is a vertical plane smoothly connected to the lower right side 531ba (see FIG. 8). By forming the right side surface 531b in such a shape, the air that has passed through the humidifying element 533 obliquely upward to the left is guided to the air outlet 511b in the upper portion of the casing 511 without causing a large pressure loss.

(2-6-2) Humidification tray The humidification tray 532 receives the water supplied from the humidification tank 531, and stores it temporarily. Specifically, water supplied to the humidifying element 533 described later is stored in the humidifying tray 532. The second side plate 511 d of the casing 511 also serves as the left side wall of the humidifying tray 532.

  The humidifying tray 532 is disposed below the humidifying element 533 (see FIG. 8). As shown in FIG. 8, the humidifying tray 532 is generally U-shaped when viewed from the side (front in FIG. 8). The humidifying tray 532 is disposed on the left side of the casing 511 (see FIG. 8). A second opening K2 is formed between the right side wall of the humidifying tray 532 and the inner wall of the casing 511 (see FIG. 8).

  The humidifying tray 532 has a curved second guide surface 532a that guides the air that has passed through the air cleaning filter 520 to the humidifying element 533 at the lower corner of the right side of the humidifying tray 532 (see FIG. 8). In other words, the humidifying tray 532 has a curved second guide surface 532a that guides the air that has passed through the air cleaning filter 520 to the humidifying element 533 at the lower corner of the humidifying tray 532 adjacent to the second opening K2. (See FIG. 8). Specifically, curved processing is applied to the lower corner of the humidifying tray 532 on the right side.

  The first guide surface 524b and the second guide surface 532a of the airflow guide 524 described above draw a continuous curve with a slight gap G generated between the airflow guide 524 and the humidifying tray 532 interposed therebetween. The lower surface 532b of the humidifying tray 532 functions as a movement restricting unit that restricts the upward movement of the air cleaning filter 520 in a state where the humidifying unit 530 and the air cleaning filter 520 are attached in the casing 511. In other words, the lower surface 532b of the humidifying tray 532 serving as the movement restricting unit is in contact with the upper surface 524c of the airflow guide 524 and restricts the upward movement of the air cleaning filter 520. Therefore, the gap generated between the airflow guide 524 and the humidifying tray 532 is very narrow. Therefore, most of the air passing through the deodorizing filter 522 and guided by the first guide surface 524 b is guided to the humidifying element 533 by being guided by the second opening K <b> 2. In other words, most of the air guided by the first guide surface 524b flows through the gap between the airflow guide 524 and the humidifying tray 532, and the casing 511 from the gap between the first side plate 511c, the second side plate 511d, and the casing 511 or the like. It does not leak out.

  The humidifying tray 532 has a tank receiving portion 532c that receives the humidifying tank 531 on the left side (see FIG. 9). A humidifying tank 531 with the water injection port 531a facing downward is disposed in the tank receiving portion 532c (see FIG. 8). The water supply valve of the water inlet 531a of the humidifying tank 531 attached to the tank receiver 532c is pressed against a push pin (not shown) provided on the tank receiver 532c. Then, due to the weight of the humidification tank 531, the water supply valve is pushed by the push-in pin, the valve port is pushed open, the water injection port 531a is opened, and water is supplied to the humidification tray 532.

  The water supplied from the humidification tank 531 is supplied to the water supply unit 532d on the right side of the humidification tray 532 (see FIG. 9). The water supply unit 532d is disposed below the humidifying element 533 (see FIG. 8). The water supply part 532d is a part that supplies water supplied from the humidification tank 531 to the humidification element 533 in the tank receiving part 532c.

  The water supply part 532d and the tank receiving part 532c are partitioned by a partition wall (not shown). A notch is formed in the partition wall, and the water supplied from the humidifying tank 531 to the tank receiving portion 532c is sent to the water supply portion 532d through the notch. That is, the water supplied to the tank receiving portion 532 c disposed on the left side of the casing 511 is then sent to the water supply portion 532 d on the right side of the casing 511. In order to immerse the humidifying element 533 in the water supply unit 532d, water is stored up to a predetermined water level. The water level of the water supply unit 532d is automatically adjusted so that the water level is maintained at a predetermined level when there is water in the humidification tank 531.

  The humidifying tray 532 has a bearing portion 532e (see FIG. 16). The bearing portion 532e rotatably supports a rotor rotating shaft 533c (see FIG. 16) of a humidifying element 533 described later. The bearing portion 532e is configured such that the rotor rotation shaft 533c is detachable so that the humidifying element 533 can be removed during maintenance or the like. Specifically, the bearing portion 532e is formed in a U-shape that opens upward, and the rotor rotation shaft 533c can be attached / detached from the U-shape opening (see FIG. 16). ).

  One guide pin 532f is provided on each of the front and rear side surfaces of the water supply portion 532d of the humidifying tray 532 (see FIG. 16). When the humidifying tray 532 is attached to the casing 511, the guide pin 532f is fitted into the C-shaped guide 511i (see FIG. 16) provided on the front and rear inner walls of the casing 511 from the C-shaped opening. When the humidifying tray 532 is pushed into the casing 511, the humidifying tray 532 is easily set at a predetermined position.

(2-6-3) Humidification element The humidification element 533 vaporizes the supplied water to humidify the air. Specifically, the humidifying element 533 receives the supply of water stored in the humidifying tray 532 and vaporizes the supplied water to humidify the air.

  The humidifying element 533 is disposed on the right side of the humidifying tray 532. Specifically, the humidifying element 533 is disposed above the water supply unit 532 d provided on the right side of the humidifying tray 532.

  The humidifying element 533 is formed in a circular shape. The humidifying element 533 mainly includes a humidifying filter 533a, a humidifying rotor 533b, and a rotor rotating shaft 533c (see FIG. 16).

  The humidifying filter 533a is a vaporizing material formed of a nonwoven fabric. The humidification filter 533a is formed in a circular shape. The humidifying filter 533a includes water supplied from the humidifying tray 532, and humidifies the air by vaporizing the water.

  The humidification rotor 533b is a frame that surrounds the outer peripheral edge of the humidification filter 533a and holds the humidification filter 533a. The humidification rotor 533b is connected to a rotor rotation shaft 533c disposed at the center of the humidification rotor 533b.

  One side (left side) of the rotor rotation shaft 533 c is rotatably supported by a bearing portion 532 e provided on the humidifying tray 532. A hexagonal connecting portion 533d is formed on the other side (right side). In addition, a distal end portion 533e that is continuous with the connecting portion 533d and is formed so as to be thinner toward the end portion is formed at the right end portion.

  When the humidifying tray 532 is attached to the casing 511, the rotor rotating shaft 533c is inserted into the hole 534ba of the connection receiving portion 534b of the humidifying motor 534 described later from the front end portion 533e (see FIG. 16). The rotor rotating shaft 533c is inserted into the hole 534ba until the connecting portion 533d reaches the connecting receiving portion 534b, whereby the connecting portion 533d and the connecting receiving portion 534b are connected. Specifically, the hole 534ba of the connection receiving portion 534b is a hexagonal hole substantially the same as the outer shape of the connection portion 533d, and the connection portion 533d is inserted into the hole 534ba formed in the connection reception portion 534b. The connection portion 533d is fitted to the connection receiving portion 534b, and both are connected. By connecting the connection receiving portion 534b and the connection portion 533d, the rotor rotation shaft 533c and the drive shaft 534a of the humidifying motor 534 described later are connected. When the humidification motor 534 is driven and the drive shaft 534a rotates, the rotor rotation shaft 533c also rotates. Here, since the connecting portion 533d and the hole 534ba of the connecting receiving portion 534b are formed in a hexagonal shape, the connecting receiving portion 534b rotates freely with respect to the connecting portion 533d when the drive shaft 534a rotates. Rotate without.

  Here, since the rotor rotation shaft 533c has a tip portion 533e formed so as to become thinner toward the end portion, the tip portion 533e functions as a guide, and the rotor rotation shaft 533c serves as a hole in the connection receiving portion 534b. It is easy to insert into 534ba.

  When a rotational driving force is transmitted from a humidifying motor 534 described later to the rotor rotating shaft 533c and the humidifying element 533 is rotated, the peripheral edge of the humidifying filter 533a of the humidifying element 533 is accumulated in the water supply portion 532d of the humidifying tray 532. Pass through. When the peripheral portion of the humidifying filter 533a passes through the water accumulated in the water supply unit 532d of the humidifying tray 532, the humidifying filter 533a receives the supply of water from the water supply unit 532d. As the humidifying element 533 rotates, the air that has been blown by the blower 512 (air that has passed through the air cleaning filter 520) is supplied to the humidifying filter 533a that has moved above the water supply unit 532d. When the air passes through the humidifying filter 533a, the water contained in the humidifying filter 533a is vaporized, whereby the air is humidified.

(2-6-4) Humidification Motor The humidification motor 534 is a motor for driving the humidification element 533 to rotate.

  The humidifying motor 534 is installed in the casing 511. Specifically, the humidification motor 534 is fixed to the casing 511 on the right side of the humidification unit 530.

  The humidifying motor 534 is configured to transmit a driving force to the driving shaft 534a (see FIG. 8). When the humidifying motor 534 rotates, the drive shaft 534a rotates.

  The drive shaft 534a has a connection receiving portion 534b on the left side (see FIG. 8). A hexagonal hole 534ba is formed in the connection receiving portion 534b (see FIG. 16). The shape of the hole 534ba is substantially the same as the cross-sectional shape of the rotor rotation shaft 533c. The hole 534ba is formed in a hexagonal shape slightly larger than the cross-sectional shape of the connecting portion 533d so that the connecting portion 533d of the rotor rotation shaft 533c can be inserted. As described above, the connecting portion 533d of the rotor rotation shaft 533c is inserted into the hole 534ba, whereby the drive shaft 534a and the rotor rotation shaft 533c are connected.

(3) Operation of Air Cleaner and Air Flow Hereinafter, the operation of the air cleaner 510 and the air flow accompanying the operation of the air cleaner 510 will be described with reference to FIGS. 17 and 18. In FIG. 17 and FIG. 18, the air flow is indicated by a one-dot chain line arrow.

  When the power of the air cleaner 510 is set to ON, the fan motor 512b of the blower 512 rotates the fan 512a. Since the rotating fan 512a blows out air in the centrifugal direction, the pressure around the rotation axis of the fan 512a decreases, and the air is sucked into the fan suction port located at the center of the fan 512a. As a result, an air flow from the suction port 511a toward the fan suction port located at the center of the fan 512a is generated. That is, as the fan 512a rotates, air is sucked into the blower chamber S1 from the suction port 511a formed at the lower left surface and the lower right surface. At this time, relatively large dust is removed by the pre-filter 511ac disposed in the suction port 511a.

  Air blown in the centrifugal direction from the plurality of blades 512ab (see FIG. 10) of the fan 512a of the blower 512, and blown in the centrifugal direction is guided to the first opening K1 by the scroll casing 512c, and is air-cleaned from the first opening K1. It is sent into the room S2 (see FIG. 17).

  The air sent to the air cleaning chamber S2 first passes through the dust collection filter 521 disposed on the upstream side in the air flow direction in the air cleaning filter 520. The dust collection filter 521 removes dust contained in the air.

  Note that the air flow that passes through the dust collection filter 521 includes not only a component in the vertically upward direction but also a component in the horizontal direction. However, here, the direction in which the fold line 521a of the pleated dust collection filter 521 extends and the direction in which the tongue portion 512ca of the scroll casing 512c extends (the rotation axis direction of the fan 512a) are orthogonal to each other. It is possible to flow air without bias.

  The air that has passed through the dust collection filter 521 further passes through the deodorizing filter 522 on the downstream side in the air flow direction. The deodorizing filter 522 removes components that cause odors to the deodorizing filter 522.

  When air passes through the air cleaning filter 520 (the dust collection filter 521 and the deodorizing filter 522), static pressure acts on the entire surface of the air cleaning filter 520, and the air passes through the air cleaning filter 520. At this time, the speed of air in the portion of the air cleaning filter 520 that faces the first opening K1 is increased. However, here, the first opening K1 and the second opening K2 are displaced from each other in a top view, and the overlapping portion is sufficiently small. Therefore, as described in the first embodiment, air is not contained in the air cleaning filter 520. It is easy to pass through the entire surface without unevenness, and it is possible to suppress the occurrence of a portion where air does not pass or the speed becomes extremely small.

  The air that has passed through the air cleaning filter 520 then passes through the second opening K2 and is sent to the humidification chamber S3. At this time, in particular, the air that has passed through the left side of the deodorizing filter 522 smoothly enters the second opening K2 by the first guide surface 524b of the airflow guide 524 and the second guide surface 532a formed at the lower portion of the humidifying tray 532. (See FIG. 17). As described above, since the upper surface 524c of the airflow guide 524 and the lower surface 532b of the humidifying tray 532 are in contact with each other, a gap is hardly formed between the airflow guide 524 and the humidifying tray 532. The air hardly passes outside the casing 511 through the gap between the opening of the casing 511 and the first side plate 511c or the second side plate 511d. The first guide surface 524b and the second guide surface 532a draw a continuous curve across a slight gap G, and air is smoothly guided to the second opening K2 along this curve (see FIG. 17).

  The air sent to the humidification chamber S3 flows upward and is guided to the humidification element 533 by the rectifying plate 511h provided above the casing 511. Since the rectifying plate 511h has two bypass openings 511ha (see FIG. 18), a part of the air (for example, 20% of the air flowing into the humidification chamber S3) passes through the bypass opening 511ha. Thus, the humidifying element 533 is guided out of the casing 511 without passing through (see FIG. 18). An ion generator 540 is disposed on the surface of the rectifying plate 511h opposite to the humidifying chamber S3, and the plasma ions generated by the ion generator 540 are carried out of the casing 511 together with the air that has passed through the bypass opening 511ha. .

  When the humidifying function of the air cleaner 510 is functioning, the humidifying element 533 is rotated by the humidifying motor 534. The humidifying element 533 is disposed in the water supply unit 532d of the humidifying tray 532 so that the lower portion of the humidifying element 533 is immersed in water. Therefore, when the humidifying element 533 rotates, the humidifying filter 533a is newly added to the water. The part to be immersed sucks up the water in the humidifying tray 532. The air passing through the humidifying element 533 promotes vaporization of the water soaked in the humidifying filter 533a. Thereby, air turns into humid air.

  The humidified air that has passed through the humidifying element 533 is such that the right side surface 531b of the humidifying tank 531 functions as an air guide surface, so that the air flow in the upper left direction becomes the vertical upward air flow, It blows out from the blower outlet 511b (refer FIG. 17).

  In the above description, the case where the humidifying function is set to ON has been described. However, when the humidifying function is set to OFF, the humidifying element 533 does not rotate, and the air passing through the humidifying element 533 is almost humidified. It blows out from the blower outlet 511b, without being carried out.

(4) Removal of Humidification Unit and Air Purification Filter Next, removal of the humidification unit 530 and the air purification filter 520 will be described mainly with reference to FIGS. 19 and 20. FIG. 19 depicts a removal operation for removing the humidification unit 530 and the air purification filter 520 from the casing 511. In FIG. 19, the removal work of the humidification unit 530 and the air purification filter 520 is drawn using a cross-sectional view of the inside of the casing 511 viewed from the front. FIG. 20 depicts a removal operation for removing the humidification unit 530 from the casing 511. In FIG. 20, the removal operation | movement of the humidification unit 530 is drawn using the perspective view which looked at the casing 511 from the left front.

  FIG. 19A and FIG. 20A show the air purifier 510 before the start of the removal operation of the humidifying unit 530 and the air purifying filter 520. FIG.

  When removing the humidifying unit 530 and the air purification filter 520, first, the user holds the handle 511ca of the first side plate 511c, and as shown in FIGS. 19B and 20B, the first side plate 511c is removed. The upper part of the first side plate 511c is opened so as to incline to the left. Then, the humidification tank 531 formed integrally with the first side plate 511c is pulled out obliquely to the left and the humidification tank 531 is removed from the casing 511 (see FIGS. 19B and 20C).

  Next, as shown in FIGS. 19C and 20D, the humidifying tray 532 is removed from the casing 511. Specifically, the user holds the handle 511da provided on the second side plate 511d constituting a part of the humidifying tray 532, and pulls out the humidifying tray 532 toward the front side (left side). At this time, the connecting portion 533 d of the rotor rotating shaft 533 c of the humidifying element 533 is removed from the connecting receiving portion 534 b provided on the drive shaft 534 a connected to the humidifying motor 534. Here, the connecting portion 533d is only inserted into the hole 534ba of the connecting receiving portion 534b, and is not particularly fixed by a fixing member (for example, a screw). Therefore, the connecting portion 533d can be easily pulled from the hole 534ba. Yes (see FIG. 16). Here, since the guide pin 532f provided on the side surface of the humidifying tray 532 moves along the guide 511i formed on the inner surface of the casing 511, the user can smoothly move the humidifying tray 532 horizontally to the left side. Can be pulled out (see FIG. 16).

  By removing the humidifying tray 532 in which the humidifying element 533 is mounted on the bearing portion 532e in this way from the casing 511, the left opening 515 of the casing 511 is in a state of being largely opened (FIGS. 19D and 20). (See (d)). Moreover, a wide space is formed in the upper part in the casing 511 from which the humidifying tray 532 is removed. In other words, by removing the humidifying tray 532 and the humidifying element 533 from the casing 511, a space capable of moving the air cleaning filter 520 is secured in the humidifying chamber S3.

  Thereafter, as shown in FIG. 19 (d), the deodorizing filter 522 of the air purification filter 520 is first removed from the casing 511. Specifically, the user holds the concave portion 524d on the upper surface of the airflow guide 524 formed integrally with the filter case 523, lifts the filter case 523 upward from the support portion 511f of the casing 511, and also the filter case 523. A convex portion 523 a provided on the right surface of the casing 511 is extracted from the concave portion 511 g of the casing 511. Next, the user holds the recess 524d and moves the filter case 523 in the thickness direction (upward direction) of the deodorizing filter 522, and then moves the humidification chamber S3 to remove it from the casing 511. In other words, the deodorizing filter 522 is pulled up toward the downstream side in the air flow direction, and then taken out of the casing 511 from the opening 515.

  Finally, as shown in FIG. 19 (e), the dust collection filter 521 of the air purification filter 520 is removed from the casing 511. Specifically, the user lifts the dust collection filter 521 from the flange portion 511e of the casing 511, moves the dust collection filter 521 in the thickness direction (upward direction) of the dust collection filter 521, and then moves the inside of the humidification chamber S3. Remove from 511. In other words, the dust collection filter 521 is lifted toward the downstream side in the air flow direction, and then taken out of the casing 511 through the opening 515.

(5) Attachment of humidification unit and air purification filter Next, attachment of the humidification unit 530 and the air purification filter 520 will be described. In addition, since the attachment operation | work of the humidification unit 530 and the air purifying filter 520 will be drawn if the figure in FIG. 19 and FIG. 20 is seen in reverse order, here the attachment operation | work of the humidification unit 530 and the air purification filter 520 is drawn. Drawings depicting this state are omitted.

  The attachment of the humidification unit 530 and the air purification filter 520 will be described with reference to the state where the air purification filter 520 and the humidification unit 530 are all removed.

  First, the dust collection filter 521 of the air purification filter 520 is installed in the casing 511. Specifically, the user inserts the dust collection filter 521 into the humidification chamber S3 through the opening 515 and then moves the dust collection filter 521 downward to place the dust collection filter 521 on the flange portion 511e of the casing 511 (FIG. 19D, ( e)).

  Next, the user attaches the deodorizing filter 522 accommodated in the filter case 523 to the casing 511 above the dust collection filter 521.

  Specifically, the user inserts the filter case 523 into the humidification chamber S3 from the opening 515 while holding the concave portion 524d of the airflow guide 524 formed integrally with the filter case 523 and lowering the right side. To do. Then, the user slides the filter case 523 while sliding the right side of the lower surface of the filter case 523 to the upper surface 521bb (see FIG. 19D) of the peripheral edge 521b (see FIG. 11) of the dust collection filter 521. Move from the left side to the right side. At this time, the user moves the filter case 523 from the left side toward the right side while gradually lowering the left side of the filter case 523 downward. The filter case 523 is moved rightward on the dust collection filter 521 until the convex portion 523a formed in the filter case 523 is fitted into the concave portion 511g provided in the casing 511. In a state where the convex portion 523a is fitted in the concave portion 511g, the left side of the filter case 523 can be lowered and placed on the support portion 511f. On the other hand, in a state where the convex portion 523a is not fitted in the concave portion 511g, the left side of the filter case 523 interferes with the inner surface of the casing 511, and the filter case 523 cannot be accommodated in the casing 511.

  If the filter case 523 is to be attached in a state where the dust collection filter 521 is not attached, there is no structure for supporting the filter case 523 on the lower side, and the convex portion 523a of the filter case 523 is present. There is no structure that guides to the recess 511g. Therefore, if the filter case 523 is attached without attaching the dust collection filter 521, the right side of the filter case 523 easily falls downward as shown in FIG. 21, and the filter case 523 can be attached at the correct position. Have difficulty.

  The deodorizing filter 522 accommodated in the filter case 523 is attached to the casing 511, that is, the convex portion 523a of the filter case 523 is fitted into the concave portion 511g of the casing 511, and the left side of the filter case 523 is the support portion 511f. The filter case 523 is in contact with the upper surface 521bb (see FIG. 7) of the peripheral edge 521b (see FIG. 11) of the dust collection filter 521. As will be described later, when the humidifying tray 532 and the humidifying tank 531 are attached to the casing 511, the lower surface 532b of the humidifying tray 532 is in contact with the upper surface 524c of the airflow guide 524 formed integrally with the filter case 523. It is in. The upward movement of the filter case 523 is regulated by the humidifying tray 532 and the humidifying tank 531, and further, the air flow is caused by the filter case 523 and the upper surface 521bb of the peripheral edge 521b of the dust collection filter 521 being in contact with each other. Therefore, even if a force that lifts up the dust collection filter 521 is applied, the upward movement of the dust collection filter 521 is prevented.

  When the attachment of the air purifying filter 520 is completed, the humidifying tray 532 is attached to the casing 511 (see FIGS. 19C and 20D). Specifically, the user grasps a handle 511da provided on the second side plate 511d constituting a part of the humidifying tray 532, and guide pins 532f provided on the humidifying tray 532 are formed on the inner walls of the front and rear of the casing 511. The tip 533e of the rotor rotating shaft 533c of the humidifying element 533 is inserted into the hole 534ba of the connection receiving portion 534b of the drive shaft 534a connected to the humidifying motor 534 (see FIG. 16), the humidifying tray 532 is moved horizontally toward the right. Here, the guide 511i and the connection receiving portion 534b function as a guide, and it is easy to move the humidifying tray 532 in the horizontal direction. When the connecting portion 533d is inserted into the hole 534ba, if the direction of the hexagonal shape of the connecting portion 533d does not match the direction of the hexagonal hole 534ba, the humidifying element 533 is connected to the connecting portion 533d. The direction of the hexagonal shape of the portion 533d and the direction of the hexagonal hole 534ba are rotated so that the connection portion 533d and the connection receiving portion 534b are connected.

  In a state where the humidifying tray 532 is attached to the casing 511, the lower surface 532 b of the humidifying tray 532 is in contact with the upper surface 524 c of the airflow guide 524 formed integrally with the filter case 523. Since the humidifying tray 532 and the upper surface 524c of the airflow guide 524 are in contact with each other, the upward movement of the air purification filter 520 is prevented even if a force that lifts up the air purification filter 520 due to the air flow is applied. It is done. That is, here, the lower surface 532b of the humidifying tray 532 functions as a movement restricting portion that restricts the upward movement of the air purification filter 520.

  Finally, the user grips the handle 511ca of the first side plate 511c, and the lower side of the first side plate 511c formed integrally with the humidifying tank 531 is placed in a state where the upper side of the first side plate 511c is inclined leftward. Engage with the upper side of the second side plate 511d (see FIGS. 19B and 20B). Next, the opening 515 of the casing 511 is closed by standing the first side plate 511c so as to be vertical (see FIGS. 19A and 20A).

(6) Features (6-1)
The air purifier 510 according to the embodiment is an air purifier having a humidity adjusting function, and includes an air purifying filter 520, a humidifying element 533, and a fan 512a. The air cleaning filter 520 removes dust contained in the air. The humidifying element 533 vaporizes the supplied water and humidifies it. The fan 512 a sends air to the air cleaning filter 520 and the humidifying element 533. In the air cleaner 510, the fan 512a, the air purification filter 520, and the humidification element 533 are arrange | positioned in order from the downward direction.

  In this air cleaner 510, the air sucked by the fan 512a from the lower air blowing chamber S1 passes through the air cleaning filter 520 in the upper air cleaning chamber S2, and then passes through the humidifying element 533 in the upper humidifying chamber S3. And blown out. Since the air blower 512, which is a sound source, is located at the lowermost position, the sound emitted from the fan motor 512b and the fan 512a is attenuated by the air cleaning filter 520 and the humidifying element 533, and noise is suppressed.

(6-2)
The air cleaner 510 according to the embodiment includes a casing 511 as an example of a main body casing. The casing 511 houses the air purification filter 520, the humidifying element 533, and the fan 512a. Moreover, the casing 511 has the ventilation chamber S1, the air purifying chamber S2, the humidification chamber S3, the 1st opening K1, and the 2nd opening K2. A fan 512a is disposed in the blower chamber S1. An air cleaning filter 520 is disposed in the air cleaning chamber S2. A humidifying element 533 is disposed in the humidifying chamber S3. The first opening K1 allows air to pass from the blower chamber S1 to the air cleaning chamber S2. The second opening K2 allows air to pass from the air cleaning chamber S2 to the humidifying chamber S3. The first opening K1 and the second opening K2 are deviated from the top view.

  In the air cleaner 510 according to the above embodiment, static pressure acts on the entire surface of the air cleaning filter 520 by the air that has entered the air cleaning chamber S2, and the air passes through the air cleaning filter 520. Since the first opening K1 between the blower chamber S1 and the air cleaning chamber S2 and the second opening K2 between the air cleaning chamber S2 and the humidifying chamber S3 are displaced in a top view, compared to those not displaced. Thus, the velocity distribution when the air passes through the air cleaning filter 520 becomes a wider distribution, and the portion where the air does not pass or the velocity becomes extremely small decreases.

(6-3)
In the air cleaner 510 according to the embodiment, the first opening K1 is shifted to one side (left side) with respect to the center of the air purification filter 520, and the second opening K2 is relative to the center of the air purification filter 520. The side is shifted to the opposite side (right side).

  Here, since the 1st opening K1 and the 2nd opening K2 have shifted | deviated to the mutually opposite side with respect to the center of the air purifying filter 520, air passes the air purifying filter 520 compared with what has not shifted | deviated. The velocity distribution at the time becomes a wider distribution, and the portion where the air does not pass or the velocity becomes extremely small decreases.

(6-4)
In the air cleaner 510 according to the above embodiment, the fan motor 512b for driving the fan 512a is further arranged in the blower chamber S1. In the humidification chamber S3, a humidification tank 531 as an example of a water storage tank that supplies water to the humidification element 533 is further arranged. The fan motor 512b is shifted to one side with respect to the center of the air cleaning filter 520, and the humidification tank 531 is shifted to the opposite side to the one side with respect to the center of the air cleaning filter 520.

  In this air purifier 510, the heavy fan motor 512b and the humidifying tank 531 are not biased to the same side in a top view and are separated in opposite directions, so that the upright stability of the casing 511 is good.

(6-5)
In the air cleaner 510 according to the above embodiment, the horizontal projection area of the air purification filter 520 is 80% or more of the horizontal projection area of the air purification chamber S2. The area of the first opening K1 is set in a range of 20% to 30% of the horizontal projection area of the air cleaning chamber S2. The area of the second opening K2 is set in a range of 40% to 50% of the horizontal projection area of the air cleaning chamber S2.

  Here, by setting the second opening K2 to be larger than the first opening K1 and shifting them in a top view, the overlapping portion becomes zero or shrinks, so that the air makes the air cleaning filter 520 The velocity distribution at the time of passage becomes a broader distribution, the portion where the air does not pass or the velocity becomes extremely small is reduced, and the air can flow evenly over the entire surface of the air cleaning filter 520.

(6-6)
In the air cleaner 510 according to the embodiment, the fan 512a is a sirocco fan. Therefore, the air volume is stabilized.

(6-7)
The air cleaner 510 according to the embodiment further includes an airflow guide 524 disposed above the air purification filter 520. The airflow guide 524 has a curved first guide surface 524 b that guides the air that has passed through the air cleaning filter 520 to the humidifying element 533.

  Here, by providing the airflow guide 524, it is easy to smoothly guide the air that has passed through the air cleaning filter 520 to the humidifying element 533, and it is possible to guide the air to the humidifying element 533 while suppressing pressure loss. .

(6-8)
In the air cleaner 510 according to the above embodiment, the airflow guide 524 is formed integrally with a part of the air purification filter 520, specifically, the filter case 523 that houses the deodorizing filter 522 here.

  Here, since the filter case 523 for housing the air cleaning filter 520 and the airflow guide 524 are integrally formed, the air that has passed through the air cleaning filter 520 can be guided to the humidifying element 533 without escaping to another path. Easy.

(6-9)
The air cleaner 510 according to the above embodiment further includes a humidifying tray 532 as an example of a water storage tray that is disposed below the humidifying element 533 and stores water supplied to the humidifying element 533. The humidifying tray 532 has a curved second guide surface 532 a that guides the air that has passed through the air cleaning filter 520 to the humidifying element 533 at the lower portion of the humidifying tray 532.

  Here, by providing the second guide surface 532a at the lower portion of the humidifying tray 532, it is easy to smoothly guide the air that has passed through the air cleaning filter 520 to the humidifying element 533, and the humidifying element 533 while suppressing pressure loss. Can lead air to

  In particular, in the air cleaner 510 according to the above embodiment, the first guide surface 524b of the airflow guide 524 and the second guide surface 532a of the humidifying tray 532 sandwich the gap G (the gap between the airflow guide 524 and the humidifying tray 532). Draw a continuous curve with.

  In this air purifier 510, the first guide surface 524b and the second guide surface 532a draw a continuous curve, so that it is easy to smoothly guide the air that has passed through the air purifying filter 520 to the humidifying element 533, and the pressure Air can be guided to the humidifying element while suppressing loss.

(6-10)
In the air cleaner 510 according to the above embodiment, the casing 511 is provided with a bypass opening 511ha that guides air to the outside of the casing 511 without passing the humidifying element 533 from the humidifying chamber S3 above the second opening K2. The

  Here, since the bypass opening 511ha is provided above the second opening K2, a part of the air can be led out of the casing 511 from the bypass opening 511ha with almost no pressure loss. Therefore, it is easy to pass a large amount of air through the air cleaning filter 520.

  Furthermore, since the first opening K1 and the second opening K2 are shifted from each other when viewed from above, a large amount of air is allowed to pass through the entire surface of the air cleaning filter 520 without being biased. Dust removal processing can be performed.

(7) Modification Below, the modification of the air cleaner 510 of 2nd Embodiment is shown. In addition, a modification may be applied to the air cleaner 10 of 1st Embodiment in the range without a contradiction.

(7-1) Modification A
In the above embodiment, the airflow guide 524 is formed integrally with the filter case 523, but is not limited thereto. For example, the airflow guide 524 may be provided on the lower surface 532 b of the humidifying tray 532. For example, the airflow guide 524 may be a separate member from the filter case 523 and the humidifying tray 532.

  However, in the case where the airflow guide 524 is provided on the lower surface of the humidifying tray 532, it is necessary to make the opening 515 of the casing 511 large, so that the airflow guide 524 is preferably formed integrally with the filter case 523.

  Further, from the viewpoint of reducing the number of parts and maintainability, the airflow guide 524 is preferably formed integrally with the filter case 523 and the like, not a separate member. Further, if the airflow guide 524 is a separate member, it is easy to form a gap through which air passes, and eventually the air easily flows out from the gap of the casing to the outside. Therefore, the airflow guide 524 is not a separate member but a filter. More preferably, it is formed integrally with the case 523 and the like.

(7-2) Modification B
In the said embodiment, although the air cleaner 510 has the 1st guide surface 524b and the 2nd guide surface 532a, it is not limited to this. The air cleaner 510 may have only one of the first guide surface 524b and the second guide surface 532a. However, in order to guide the air that has passed through the air cleaning filter 520 to the humidifying element 533 while suppressing pressure loss, it is preferable to provide both the first guide surface 524b and the second guide surface 532a.

(7-3) Modification C
In the above embodiment, the bypass opening 511ha is formed in the rectifying plate 511h of the casing 511. However, the present invention is not limited to this, and the bypass opening 511ha may not be formed. However, in order to increase the amount of air passing through the air cleaning filter 520 and efficiently clean the air, it is preferable to provide the bypass opening 511ha.

(7-4) Modification D
In the above embodiment, the air purification filter 520 includes the deodorization filter 522, but the air purification filter 520 is not limited thereto, and the air purification filter 520 may include only the dust collection filter 521. In this case, the dust collection filter 521 may be configured to be accommodated in the filter case 523.

(7-5) Modification E
In the above embodiment, the convex portion 523a is provided in the filter case 523, the concave portion 511g is provided in the casing 511, and the convex portion 523a is fitted in the concave portion 511g. However, the present invention is not limited to this. For example, a recess may be provided in the filter case 523, and a protrusion may be provided in the casing 511, and the protrusion of the casing 511 may be fitted in the recess of the filter case 523.

(7-6) Modification F
In the above embodiment, the humidifying unit 530 uses a method in which the humidifying filter 533a of the humidifying element 533 is immersed in water in the water supply unit 532d of the humidifying tray 532. However, the present invention is not limited to this.

  For example, the humidifying rotor hisch system may be employed for the humidifying unit 530.

  Specifically, in the humidifying rotor-humidified humidifying unit 530, a plurality of ishes 533ba are provided on the humidifying rotor 533b of the humidifying element 533 (see FIG. 22). In the humidification rotor shear method, the humidification filter 533 a is not directly immersed in water, but when the humidification rotor 533 b rotates, the shear 533 ba scoops up water in the water supply unit 532 d of the humidification tray 532. Then, when the humidification rotor 533b further rotates and the shear 533ba moves to the vicinity of the uppermost position, the shear 533ba applies water to the humidification filter 533a, whereby water is supplied to the humidification filter 533a.

(7-7) Modification G
The shape of the airflow guide 524 of the above embodiment is an exemplification, and is not limited to this. For example, the airflow guide 524 is formed so as to cover the lower portion of the humidifying tray 532 on the second opening K2 side, more specifically, the lower corner portion of the humidifying tray 532 adjacent to the second opening K2. The extended portion 524e may be provided (see FIGS. 23 and 24). The left side surface of the extension portion 524e faces the lower corner portion and the lower right side surface of the humidifying tray 532 on the side adjacent to the second opening K2. The right side surface of the extension portion 524e functions as a curved extension guide surface 524ea that guides the air that has passed through the air cleaning filter 520 to the humidifying element 533 (see FIG. 24). The extended guide surface 524ea draws a curve continuous with the first guide surface 524b (see FIG. 24).

  By being configured in this way, it is easy to prevent the air that has passed through the air cleaning filter 520 from flowing into the gap G generated between the airflow guide 524 and the humidifying tray 532. Further, pressure loss is caused by the first guide surface 524b and the extended guide surface 524ea formed to draw a continuous curve with the first guide surface 524b on the downstream side of the first guide surface 524b in the air flow direction. The air can be guided to the humidifying element 533 while suppressing the above.

  As described above, according to the present invention, the sound emitted from the fan motor 26 and the fan rotor 25 is attenuated by the air cleaning filter 22 and the humidifying element 24. Further, according to the present invention, the sound emitted from the fan motor 512b and the fan 512a is attenuated by the air cleaning filter 520 and the humidifying element 533. This can also be applied to a dehumidifier using a moisture absorbing element.

10,510 Air purifier 22,520 Air purifier filter 24,533 Humidifying element 25 Fan rotor (fan)
26, 512b Fan motor 31 Main body casing 31a, S1 Blower chamber 31b, S2 Air cleaning chamber 31c, S3 Humidification chamber 40 Tank (water storage tank)
311, K1 1st opening 312, K2 2nd opening 511 Casing (main body casing)
511ha Bypass opening 512a Fan 523 Filter case 524 Airflow guide 524b First guide surface 531 Humidification tank (water storage tank)
532 Humidification tray (water storage tray)
532a Second guide surface G Clearance

Japanese Patent Application Laid-Open No. 2010-1785

Claims (7)

An air purifier having a humidity control function,
An air purification filter (22,520) for removing dust contained in the air;
A humidifying element (24, 533) for vaporizing and humidifying the supplied water;
A fan (25, 512a) that blows air upward from the fan outlet and blows air to the air purification filter (22, 520) and the humidifying element (24, 533);
The main casing (31,511) in which the air purifying filter (22,520), the humidifying element (24,533) and the fan (25,512a) are accommodated and an outlet (10b, 511b) for blowing upward is formed. )When,
A water storage tray (532) that is disposed below the humidifying element (533) and stores water supplied to the humidifying element (533);
With
From below, the fan (25, 512a), the air purification filter (22, 520), the humidifying element (24, 533) and the outlet (10b, 511b) are arranged in this order.
The water storage tray is directly above the fan outlet and below the outlet, and is disposed between the fan outlet and the outlet.
Air purifier (10, 510). A water storage tank (40, 531) for supplying water to the humidifying element (24, 533);
The humidifying element and the water storage tank are disposed in a humidifying chamber (31c, S3) above the air purification filter (22, 520).
The air cleaner (10, 510) according to claim 1. Suction ports (10a, 511a) are formed on two opposing side surfaces of the main casing (31, 511),
The fan (25, 512a) is a sirocco fan having fan suction ports (27a) opposite to the suction ports (10a, 511a) on both sides.
The air cleaner (10, 510) according to claim 1 or 2. An airflow guide (524) disposed above the air purification filter (520);
Further comprising
The airflow guide (524) has a curved first guide surface (524b) that guides air that has passed through the air purification filter (520) to the humidifying element (533).
The air cleaner (510) according to any one of claims 1 to 3. The water storage tray (532) has a curved second guide surface (532a) that guides air that has passed through the air purification filter (520) to the humidifying element (533) below the water storage tray (532). Have
The first guide surface (524b) and the second guide surface (532a) draw a continuous curve across a gap (G).
The air cleaner (510) of claim 4. The airflow guide (524) includes a humidification chamber (S3) in which the humidification element (533) is disposed from an air purification chamber (S2) in the water storage tray (532) in which the air purification filter (520) is disposed. An extension portion (524e) formed to cover the lower portion on the second opening (K2) side through which air passes,
The extension part (524e) has a curved extension guide surface (524ea) that guides air that has passed through the air purification filter (520) to the humidifying element (533),
The extended guide surface (524ea) draws a continuous curve with the first guide surface (524b),
The air cleaner (510) of claim 4. The shape of the cross section of the main body casing is a square,
The air cleaner (10, 510) according to any one of claims 1 to 6.

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