JP5347828B2 - Humidifier - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a humidification device having a rotating means rotated by engagement of gears with each other, suitably maintaining engagement of the gears, even if the dimensions etc. vary in terms of design and thereby, is capable of suppressing abnormal noise. <P>SOLUTION: The humidification device includes a humidification rotating body 43, a second gear 44 and a support part 14. The humidification rotating body 43 includes a first gear 433a, formed on the outer periphery and a rotating shaft 434 and is made to corotate with the rotating shaft 434. The second gear 44 is engaged with the first gear 433a and makes the humidification rotating body 43 rotate by having the driving force from a drive means transmitted. The support part 14 includes a substantially planar support face 414a, enabling the rotating shaft 434 to roll in a first direction approaching the second gear 44 and to support the humidification rotating body 43. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a humidifier.

  2. Description of the Related Art Conventionally, there is a humidifier that pumps water in a storage container for storing water by a rotating means and supplies high-humidity air indoors by passing the air through the pumped water. For example, in the humidifier described in Patent Document 1 (Japanese Patent Application Laid-Open No. 2009-24918), a rotating drum (corresponding to a rotating means) that holds a water absorption filter is rotated by a drive gear that is positioned substantially vertically above the rotating drum. The water absorption filter is humidified by being immersed in a water storage container (corresponding to a storage container).

  Various rotation means have been proposed. In addition to the rotating drum described in Patent Document 1 (Japanese Patent Laid-Open No. 2009-24918), for example, a gear is formed in the rotating means, and a driving force transmitted from a motor or the like is transmitted to the gear. Some rotate when the gears mesh. Here, an appropriate backlash is necessary for the meshing between the gears, but it is assumed that the backlash is not properly maintained due to variations in the dimensions of the designed parts. In this case, there is a concern that the meshing of both gears may be deteriorated, and there is a concern that abnormal noise may occur between the two gears.

  Accordingly, an object of the present invention is to provide a humidifying device in which the rotating means rotates when the gears mesh with each other. It is in providing the humidifier which can suppress generation | occurrence | production of this.

  The humidifying device according to the first aspect of the present invention includes a humidifying rotator, a second gear, and a support portion. The humidifying rotator has a first gear formed on the outer periphery, has a rotating shaft, and rotates together with the rotating shaft. The second gear meshes with the first gear and rotates the humidifying rotator by transmitting the driving force from the driving means. The support portion has a substantially flat support surface that enables the rotation shaft to roll in the first direction so as to approach the second gear, and supports the humidifying rotating body.

  In the humidifying device according to the first aspect of the invention, the support surface is a surface that enables the rotating shaft to roll in the first direction, and the humidifying rotating body rotates together with the rotating shaft, so that the humidifying rotating body rotates. The rotating shaft receives a dynamic frictional force from the support surface. Thereby, the humidification rotary body which has a rotating shaft can be maintained in the state which approached the 2nd gear side. That is, it is possible to maintain a state in which the gap between the first gear teeth and the second gear teeth is reduced. Therefore, generation | occurrence | production of abnormal noise etc. can be suppressed.

  A humidifier according to a second aspect of the present invention is the humidifier according to the first aspect of the present invention, and when viewed from the front, the intersection angle between the tangent line of the pitch circle of the first gear and the pitch circle of the second gear and the support surface is an acute angle. It is.

  In the humidifying device according to the second aspect of the invention, the distance between the axis of the first gear and the axis of the second gear can be reduced.

  A humidifying device according to a third invention is the humidifying device according to the first invention or the second invention, wherein the second gear has a central axis that is obliquely above the first direction with respect to the rotation axis when viewed from the rotation axis direction. It arrange | positions so that it may be located in.

  In the humidifying device according to the third aspect of the invention, it is possible to assist in increasing the pressing force of the first gear against the second gear.

  The humidifying device according to a fourth aspect of the present invention is the humidifying device according to any one of the first to third aspects of the present invention, wherein the support portion further has a first direction regulating surface. The first direction regulating surface regulates rolling of the rotating shaft in the first direction. A first clearance is provided between the rotation shaft and the first direction regulating surface of the support portion.

  In the humidifying device according to the fourth aspect of the present invention, for example, when the humidifying rotating body or the support portion is assembled, the humidifying rotating body having the rotating shaft may be slightly shifted to the first direction side due to variations in dimensional tolerance or the like. Since the first clearance is provided between the rotating shaft and the first direction regulating surface, it is possible to expect the humidifying rotating body having the rotating shaft to roll in the first direction. That is, the first clearance can absorb variations such as dimensional tolerances.

  A humidifying device according to a fifth aspect of the present invention is the humidifying device according to any of the first to fourth aspects of the present invention, wherein the support portion further has a second direction regulating surface. The second direction regulating surface regulates rolling of the rotating shaft in the second direction opposite to the first direction. A second clearance is provided between the rotation shaft and the second direction regulating surface of the support portion.

  In the humidifying device according to the fifth aspect of the present invention, the variation due to the dimensional tolerance of the rotating shaft and the support portion can be absorbed by providing the second clearance.

  A humidifying device according to a sixth aspect of the present invention is the humidifying device according to the fifth aspect of the present invention, wherein even if the rotary shaft rolls in the second direction and the second clearance is lost, the meshing between the first gear and the second gear is ensured. The

  In the humidifying device according to the sixth aspect of the present invention, the tooth tip of the first gear and the tooth tip of the second gear can be prevented from coming off even when the rotation shaft rolls in the second direction. Thereby, rotation of the humidification rotary body via the second gear can be maintained.

  A humidifier according to a seventh aspect of the present invention is the humidifier according to any one of the first to sixth aspects of the present invention, wherein the support surface has an inclined surface having a downward slope in the first direction.

  In the humidifying device according to the seventh aspect of the present invention, the dynamic friction force generated between the rotating shaft and the support surface is increased by increasing the rolling force of the rotating shaft. Thereby, the rotating body for humidification can be brought close to the second gear.

  A humidifier according to an eighth aspect of the present invention is the humidifier according to any one of the first to seventh aspects of the present invention, wherein the support surface is provided with a member having a large frictional force.

  In the humidifying device according to the eighth aspect of the invention, the frictional force generated between the rotating shaft and the support surface is increased, whereby the humidifying rotating body can be brought closer to the second gear side.

  In the humidifying device according to the first aspect of the invention, the support surface is a surface that enables the rotating shaft to roll in the first direction, and the humidifying rotating body rotates together with the rotating shaft, so that the humidifying rotating body rotates. The rotating shaft receives a dynamic frictional force from the support surface. Thereby, the humidification rotary body which has a rotating shaft can be maintained in the state which approached the 2nd gear side. That is, it is possible to maintain a state in which the gap between the first gear teeth and the second gear teeth is reduced. Therefore, generation | occurrence | production of abnormal noise etc. can be suppressed.

  In the humidifying device according to the second aspect of the invention, the distance between the axis of the first gear and the axis of the second gear can be reduced.

  In the humidifying device according to the third aspect of the invention, it is possible to assist in increasing the pressing force of the first gear against the second gear.

  In the humidifying device according to the fourth aspect of the present invention, for example, when the humidifying rotating body or the support portion is assembled, the humidifying rotating body having the rotating shaft may be slightly shifted to the first direction side due to variations in dimensional tolerance or the like. Since the first clearance is provided between the rotating shaft and the first direction regulating surface, it is possible to expect the humidifying rotating body having the rotating shaft to roll in the first direction. That is, the first clearance can absorb variations such as dimensional tolerances.

  In the humidifying device according to the fifth aspect of the present invention, the variation due to the dimensional tolerance of the rotating shaft and the support portion can be absorbed by providing the second clearance.

  In the humidifying device according to the sixth aspect of the present invention, the tooth tip of the first gear and the tooth tip of the second gear can be prevented from coming off even when the rotation shaft rolls in the second direction. Thereby, rotation of the humidification rotary body via the second gear can be maintained.

  In the humidifying device according to the seventh aspect of the present invention, the dynamic friction force generated between the rotating shaft and the support surface is increased by increasing the rolling force of the rotating shaft. Thereby, the rotating body for humidification can be brought close to the second gear.

  In the humidifying device according to the eighth aspect of the invention, the frictional force generated between the rotating shaft and the support surface is increased, whereby the humidifying rotating body can be brought closer to the second gear side.

The outline external view of an air harmony device. The schematic exploded perspective view of an air conditioning apparatus. The longitudinal cross-sectional view of an air conditioning apparatus. The image figure (except the 1st bearing part) which shows the air harmony device in the state where the water tray was pulled out. The schematic exploded perspective view of a water tray (a 1st bearing part, a 2nd bearing part, and a humidification rotor are remove | excluded). The schematic perspective view of a front side bearing part and a back side bearing part. The rear view of a front side bearing part. The front view of a back side bearing part. The disassembled perspective view of a humidification rotor. The right view of a humidification rotor. The schematic diagram which shows a humidification rotor and a front side bearing part (only a back part is shown). The schematic diagram which shows a humidification rotor and a front side bearing part (only a back part is shown) for showing the action | operation relationship of force. FIG. 13 is an enlarged schematic view of the XIII portion of FIG. 12 showing only the meshing portion of the teeth of the first gear and the drive gear.

  Hereinafter, an air conditioner 1 including a humidification unit 4 according to an embodiment of the present invention will be described 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.

<Configuration of air conditioner 1>
In the following description, words indicating directions such as up and down, left and right, front (front), and back (rear) are used. These directions mean the directions shown in FIG. 1 unless otherwise specified.

  The air conditioner 1 has a humidifying function and an air cleaning function, and functions as a humidifying device during a humidifying operation and as an air cleaning device during an air cleaning operation. Moreover, in the air conditioning apparatus 1, not only a single function but also a plurality of functions, that is, a humidifying function and an air purifier function can be exhibited simultaneously.

  FIG. 1 is a schematic external view of the air conditioner 1. FIG. 2 is a schematic exploded perspective view of the air conditioner 1. As shown in FIGS. 1 and 2, the air conditioner 1 is composed of a casing 10. The casing 10 includes a main body 11 and a front panel 12 that is detachably fitted from the front side of the main body 11.

  The main body 11 is formed with a suction port 21 for introducing indoor air into the casing 10. Specifically, the suction ports 21 are respectively formed in front side portions of both side surfaces of the main body portion 11. The main body 11 is formed with an air outlet 22 for discharging the air generated in the casing 10 to the outside. Specifically, the air outlet 22 is formed in the back side portion of the upper surface of the main body 11.

  In addition, the main body 11 is provided with an operation panel 61 for receiving a user operation command on the front side portion of the upper surface thereof. Further, the main body 11 is provided with a display 71 on the front surface or the operation panel 61 for notifying the user of information relating to the operating state of the air conditioner 1. The display unit 71 is made of, for example, an LED.

  In addition, as shown in FIG. 3, the blower 2, the air cleaning unit 3, the humidification unit 4, and a control unit (not shown) that controls these are mainly housed in the casing 10.

  Further, as shown in FIG. 4, a drawer-type water tray 42 (described later) that can be attached to and detached from the main body 11 is accommodated in the main body 11. In a state where the water tray 42 is accommodated in the main body 11, the right side surface of the water tray 42 is viewed integrally with the right side surface of the casing 10.

  Hereinafter, the specific structure of each part accommodated in the casing 10 is demonstrated.

<Configuration of each part in casing 10>
(1) Blower 2
The air blower 2 is arrange | positioned in the back side part in the casing 10, as shown in FIG.2 and FIG.3. Here, in the air conditioning apparatus 1, the air purifying unit 3, the humidification unit 4, and the air blower 2 are arranged in order from the front side. Therefore, when a blower motor (not shown) that transmits driving force to the blower 2 is operated by a control unit (described later), air flowing into the casing 10 through the suction port 21 is supplied to the air cleaning unit 3, An air flow path that passes through the humidifying unit 4 and flows out of the casing 10 through the blower outlet 22 is formed by the blower 2.

(2) Air purification unit 3
The air cleaning unit 3 mainly includes a prefilter 31, an ionization unit 32, a pleated filter 33, and a deodorization catalyst 34. Moreover, these are arrange | positioned along with this order from the front side.

  The pre-filter 31 captures dust in the air. The ionization unit 32 charges dust in the air. The pleated filter 33 adsorbs dust charged by the ionization unit 32. The deodorizing catalyst 34 adsorbs and decomposes odors and toxic gases in the air that have passed through the prefilter 31, the ionization unit 32, and the pleated filter 33.

(3) Humidification unit 4
As shown in FIGS. 3 and 5, the humidifying unit 4 mainly drives and rotates the water tank 41, the water tray 42, the humidifying rotor 43, and the humidifying rotor 43 by a driving force from a driving motor (not shown). Drive gear 44 to be driven.

  Here, the humidification rotor 43 is disposed at a predetermined position of the water tray 42. Therefore, when the water tray 42 is pulled out from the main body 11 of the casing 10, the humidification rotor 43 is similarly pulled out from the main body 11 of the casing 10 (see FIG. 4).

(A) Water tank 41
The water tank 41 is disposed on the front side portion in the casing 10. In a state where the water tray 42 is accommodated in the main body 11, a float valve (not shown) is provided below the water tank 41, and the float valve is lowered due to a decrease in the water level in the water tray 42. The water in the water tank 41 flows out into the water tray 42.

(B) Water tray 42
The water tray 42 stores water to be supplied to the air passing through the air cleaning unit 3 in order to generate humid air. As described above, the water source stored in the water tray 42 is the water tank 41.

  A partition wall 421 for partitioning the inside of the water tray 42 into a region on the front side of the substantially central portion and a region on the back side of the substantially central portion is provided at a position on the back side of the central portion of the water tray 42. .

  An opening 422 is formed in the lower part of the partition wall 421 for allowing water stored in a region on the front side of the substantially central portion to flow into a region on the back side of the substantially central portion.

  In addition, the entire humidification rotor 43 is supported at a predetermined position of the partition wall 421 and a predetermined position of the outer peripheral wall constituting the water tray 42 by supporting a rotating shaft 434 (described later) of the humidification rotor 43 (described later). The front-side bearing portion 14 and the back-side bearing portion 15 (both see FIG. 6) that are rotatably supported are fixed by screwing. Specifically, an opening (not shown) is formed from a substantially central portion to an upper end portion at a predetermined position (specifically, a substantially central portion) of the partition wall 421, and the rear upper end portion of the outer peripheral wall constituting the water tray 42 is formed. In addition, an opening 423 that is symmetrical to the opening formed in the partition wall 421 is formed at a position facing the opening formed in the partition wall 421. And the 1st insertion part 114a (refer FIG. 6 and FIG. 7) of the front side bearing part 14 and the 2nd insertion part 115a (refer FIG. 6 and FIG. 8) of the back side bearing part 15 fit in each opening. ing. In this state, screwing is performed through holes formed in the first screwing portion 114b of the front side bearing portion 14 and the second screwing portion 115b of the rear side bearing portion 15, respectively. The portion 14 and the back side bearing portion 15 are fixed at regular attachment positions.

  As shown in FIG. 6, an opening 114 c and an opening 115 c into which the rotation shaft 434 of the humidification rotor 43 can be inserted from above are formed at the upper end portions of the front side bearing portion 14 and the rear side bearing portion 15, respectively. A front end portion and a rear end portion of the rotating shaft 434 of the humidifying rotor 43 are respectively inserted into the openings 114c and 115c from above, and the rotating shaft 434 is supported by the front side bearing portion 14 and the back side bearing portion 15. The humidification rotor 43 is rotatably supported.

  Here, the openings 114c and 115c will be described below with reference to FIGS. 6 to 8. The openings 114c and 115c have substantially the same configuration, and therefore the opening 115c illustrated in detail will be mainly described. However, since the diameter dimension of the front end portion and the rear end portion of the rotating shaft 434 is different (see FIGS. 9 and 10), the size of each part forming the opening 114c is the same as the size of each part forming the opening 115c. Are different (see FIGS. 7 and 8).

  The opening 115c is formed by a front opening forming portion 15a, a left opening forming portion 15b, a right opening forming portion 15c, a back opening forming portion 15d, and a lower opening forming portion 15e located around the opening 115c. Yes. Specifically, the opening 115c includes a rear space of the front opening forming portion 15a, a right space of the left opening forming portion 15b, a left space of the right opening forming portion 15c, and a front of the rear opening forming portion 15d. It is formed by opening the space and the space above the lower opening forming portion 15e. As for the opening 114c, similarly to the opening 115c, the back side opening forming part 14a (see FIG. 7), the left opening forming part (not shown), the right opening forming part (not shown), and the front side opening. It is formed by the formation part 14d and the lower opening formation part (not shown).

  The rear-side opening forming portion 14a and the front-side opening forming portion 15a are formed with substantially U-shaped concave portions 414 and 415 in the rear view and the front view, respectively.

  As shown in FIG. 7, the recess 414 is formed by a first shaft support surface 414a, a first direction regulating surface 414b, a second direction regulating surface 414c, a first curved surface 414d, and a second curved surface 414e. Has been. As shown in FIG. 8, the recess 415 is formed by the second shaft support surface 415a, the first direction regulating surface 415b, the second direction regulating surface 415c, the first curved surface 415d, and the second curved surface 415e. Has been.

  As shown in FIG. 7, the first shaft support surface 414a is an inclined surface that goes down to the left, and the second shaft support surface 415a is an inclined surface that goes down to the left as shown in FIG. The first shaft support surface 414a and the second shaft support surface 415a are surfaces having a role of supporting the rotation shaft 434 of the humidification rotor 43 so as to be able to roll along these inclined surfaces. The inclination angle θ1 of the first shaft support surface 414a and the second shaft support surface 415a is, for example, 10 °.

  Here, the direction in which the rotating shaft 434 of the humidifying rotor 43 rolls along the first shaft support surface 414a and the second shaft support surface 415a is referred to as a first direction. A direction opposite to the first direction is referred to as a second direction.

  The first direction restricting surfaces 414b and 415b are surfaces extending in a substantially vertical direction that restrict the rolling of the rotating shaft 434 of the humidifying rotor 43 in the first direction. The second direction restricting surfaces 414c and 415c are surfaces extending in a substantially vertical direction that restrict the rolling of the rotating shaft 434 of the humidifying rotor 43 in the second direction.

  The first curved surfaces 414d and 415d are curved surfaces that connect the end portions on the first direction side of the first shaft support surface 414a and the second shaft support surface 415a and the lower portions of the first direction regulating surfaces 414b and 415b. The second curved surfaces 414e and 415e are curved surfaces that connect the end portions on the second direction side of the first shaft support surface 414a and the second shaft support surface 415a and the lower portions of the second direction regulating surfaces 414c and 415c. The first curved surfaces 414d and 415d also serve as the first shaft support surface 414a and the second shaft support surface 415a and the first direction regulating surfaces 414b and 415b, and the second curved surfaces 414e and 415e. Serves also as the first shaft support surface 414a and the second shaft support surface 415a and the second direction regulating surfaces 414c and 415c.

(C) Humidification rotor 43
The humidification rotor 43 has a function of supplying moisture to the air passing therethrough. Thereby, the air sucked from the suction port 21 and purified by the air purification unit 3 passes through the humidification rotor 43, whereby humidified clean air can be supplied into the room. The humidification rotor 43 is detachably and rotatably supported by the front side bearing portion 14 and the back side bearing portion 15 via a rotation shaft 434 located at the center thereof. The humidification rotor 43 can pump up the water stored in the water tray 42 by this rotation, thereby supplying moisture to the air passing through the humidification rotor 43 as described above.

  As shown in FIG. 9, the humidification rotor 43 is configured by combining a first wheel 431, a humidification filter 432, and a second wheel 433 with the rotation shaft 434 being coaxial.

  The first wheel 431 includes a first frame portion 471 having a circular shape, and a water pocket group 472 disposed at an outer edge portion on the front side of the first frame portion 471.

  The first frame portion 471 includes a first outer frame portion 471a having a circular shape, and a first inner frame that rises in a vertical direction from the first outer frame portion 471a to the front side and has a smaller outer circle than the first outer frame portion 471a. Part 471b, and a plurality of first arm parts 471c extending from the outer edge of the first inner frame part 471b to a first circular boss part 471d (described later). In the first outer frame portion 471a, a plurality of openings 471e are radially formed at equal intervals. The first frame portion 471 is formed with a first circular boss portion 471d for penetrating the rotation shaft 434 at the center.

  The water pocket group 472 is composed of a plurality of water pocket portions 472a arranged radially at equal intervals along the outer edge portion on the front side of the first outer frame portion 471a. A water pocket recess 472b that is recessed from the downstream side to the upstream side in the rotation direction is formed inside the water pocket portion 472a. The plurality of water pocket portions 472a repeat operations such that each of the water pockets 472a is sequentially submerged in the water tray 42 by the rotation of the humidifying rotor 43 and then submerged. When the water pocket portion 472a is submerged, water flows into the water pocket recess 472b. Next, as the water pocket portion 472a rises in the rotation direction of the humidification rotor 43 and approaches the uppermost position, the water accumulated in the water pocket recess 472b is humidified through the opening 471e formed in the first outer frame portion 471a. It flows toward the front side portion of the filter 432, and almost all of the water flows to the front side portion of the humidifying filter 432 when passing through the uppermost position. Thereby, water reaches the entire humidification filter 432.

  The humidification filter 432 is a circular honeycomb structure, and is a filter that adsorbs water supplied by the water pocket group 472. The humidification filter 432 is made of, for example, a nonwoven fabric. The humidification filter 432 is disposed between the first wheel 431 and the second wheel 433. Specifically, the humidification filter 432 is disposed so as to fit into the first inner frame portion 471b of the first wheel 431. In addition, a circular opening 481 a for penetrating the rotation shaft 434 is formed at the center of the humidifying filter 432. The opening 481a faces a first circular boss portion 471d and a second circular boss portion 493 (described later) of the humidifying filter 432 in a state where the first wheel 431, the humidifying filter 432, and the second wheel 433 are combined. Provided in position. In the state where the humidification rotor 43 is properly attached, the lowermost portion of the humidification filter 432 is located above the full water position in the water tray 42. That is, the humidification filter 432 is prevented from being immersed in the water tray 42.

  The second wheel 433 is fitted to the first wheel 431 and has a second outer frame portion 491 and a plurality of second arms extending from an inner edge portion of the second outer frame portion 491 to a second circular boss portion 493 (described later). Part 492. A second circular boss portion 493 is formed in the center portion of the second wheel 433 so as to be fitted to the first circular boss portion 471d of the first wheel 431 and penetrate the rotating shaft 434. A first gear 433 a is formed on the outer periphery of the second outer frame portion 491.

  The rotating shaft 434 penetrates the first circular boss portion 471d of the first wheel 431, the opening 482a of the humidifying filter 432, and the second circular boss portion 493 of the second wheel 433, and the entire humidifying rotor 43 is rotated. It is a member that becomes a shaft. As shown in FIG. 10, the rotating shaft 434 extends in the thickness direction in a state where the first wheel 431, the humidifying filter 432 and the second wheel 433 are combined. Long back and forth.

  Further, in a state where the humidification rotor 43 is supported by the front-side bearing portion 14 and the back-side bearing portion 15 via the rotation shaft 434, the rotation shaft 434 has a front-side portion (specifically, humidification in a side view). A portion projecting to the front side from the front end portion of the rotor 43, hereinafter referred to as a front side projecting portion 435, is supported by the front side bearing portion 14, and its back side portion (specifically, side view) , A portion protruding from the rear end of the humidifying rotor 43 to the back side, hereinafter referred to as a back side protruding portion 436) is supported by the back side bearing portion 15.

  In addition, the height position of the lower opening formation part which forms the opening 114c of the front side bearing part 14 is lower than the height position of the 1st shaft support surface 414a. Similarly, the height position of the lower opening forming portion 15e that forms the opening 115c of the back side bearing portion 15 is lower than the height position of the second shaft support surface 415a. The front end portion of the front side protruding portion 435 is inserted into the opening 114c, the lower portion of the front side protruding portion 435 abuts on the first shaft support surface 414a, and the rear end portion of the back side protruding portion 436 becomes the opening 115c. The rotating shaft 434 is supported by the front-side bearing portion 14 and the back-side bearing portion 15 by inserting the lower portion of the rear-side protruding portion 436 into contact with the second shaft support surface 415a. Here, in a state where the humidification rotor 43 is supported by the front side bearing portion 14 and the back side bearing portion 15 via the rotation shaft 434, the first shaft support surface of the front side bearing portion 14 of the front side protrusion portion 435 is supported. The portion that contacts 414a is referred to as a first bearing contact portion 435a, and the portion that contacts the second shaft support surface 415a of the back side bearing portion 15 is referred to as a second bearing contact portion 436a.

  Further, in a state where the water tray 42 is accommodated in the main body portion 11, between the left end portion of the first bearing contact portion 435 a of the rotating shaft 434 and the first direction regulating surface 414 b of the front side bearing portion 14, As shown in FIG. 11, a first clearance L1 is provided, and a second clearance is formed between the right end portion of the first bearing contact portion 435a of the rotating shaft 434 and the second direction regulating surface 414c of the front side bearing portion. A clearance L2 is provided.

  The first clearance L1 is determined when the humidifying rotor 43 is located at a position beyond the normal mounting position due to variations in dimensional tolerances, assembly tolerances, and the like of components (such as the rotating shaft 434, the front bearing portion 14, and the rear bearing portion 15) that are generated during assembly. Even if it deviates to the 1st direction side, it has a dimension which enables rolling of rotating shaft 434 of humidification rotor 43 to the 1st direction side. The second clearance L2 is such that the humidification rotor 43 is displaced in the second direction from the normal mounting position due to variations in dimensional tolerances, assembly tolerances, and the like of the parts (the rotary shaft 434, the front bearing part 14, and the rear bearing part 15). However, the first gear 433a has a dimension that can ensure engagement between the teeth of the first gear 433a and the teeth of the drive gear 44 (described later). That is, the 1st clearance L1 and the 2nd clearance L2 have a role which absorbs the dimensional tolerance etc. of the above-mentioned various components. Further, with respect to the second clearance L2, the dimension of the first gear 433a and the drive gear 44 is such that the tooth tips of the first gear 433a and the drive gear 44 do not come off, so that the drive gear 44 that receives the driving force from the drive motor has the first gear 433a. The transmission of driving force can be maintained.

(D) Drive gear 44
The drive gear 44 is attached to a drive shaft 46 (see FIG. 3) of a drive motor that transmits a drive force to the drive gear 44. Therefore, when the drive motor is driven by a control unit described later, the drive gear 44 rotates. The drive shaft 46, the drive gear 44 attached to the drive shaft 46 and the drive motor are fixed at predetermined positions in the main body 11. Specifically, these are fixed at positions where the teeth of the drive gear 44 and the teeth of the first gear 433 a formed on the humidifying rotor 43 are engaged with each other in a state where the water tray 42 is accommodated in the main body 11. Has been. More specifically, in the state where the teeth of the first gear 433a and the teeth of the drive gear 44 mesh with each other, the drive gear 44 has a central axis of the drive gear 44 that is It arrange | positions so that it may be located in one direction side and diagonally upward.

  Therefore, when the drive gear 44 is rotated by driving the drive motor, the humidification rotor 43 in which the first gear 433a in which the drive gear 44 and the teeth mesh with each other is formed rotates.

  Here, in the front view, the tangent L3 between the pitch circle C1 of the first gear 433a and the pitch circle C2 of the drive gear 44, and the first shaft support surface 414a and the second shaft support surface 415a toward the first direction side. The intersection angle θ3 with the extended surface S3 is an acute angle.

(5) Control unit The control unit is composed of a plurality of electrical components located below the operation panel 61 and controls the operation of various components in the air conditioner 1. Specifically, the control unit controls the blower 2, the air purification unit 3, and the humidification unit 4 based on a user instruction input via the operation panel 61. For example, when a user inputs a control command for performing a humidifying operation and an air cleaning operation to the air conditioner 1 via the operation panel 61, the control unit operates a blower motor that transmits driving force to the blower 2. Drive the drive motor.

  Hereinafter, the relationship between the humidification rotor 43 and the drive gear 44 when the blower motor and the drive motor are driven by the control unit will be described with reference to FIGS. 12 and 13.

<Relationship between humidification rotor 43 and drive gear 44>
First, in a state where the water tray 42 is not accommodated in the main body 11, the left end and the right end of the rotating shaft 434 are in contact with the first direction restricting surfaces 414b and 415b and the second direction restricting surfaces 414c and 415c, respectively. Therefore, the humidification rotor 43 that rotates around the rotation shaft 434 can also rotate within such a range.

  And when the water tray 42 will be in the state accommodated in the main-body part 11, as mentioned above, the humidification rotor 43 is set to a predetermined position.

  In this state, when the drive motor is driven by the control unit, the drive gear 44 rotates, and the humidification rotor 43 rotates around the rotation shaft 434 via the drive gear 44. At this time, the humidification rotor 43 moves to the first direction side by the first shaft support surface 414a and the second shaft support surface 415a that enable the rotation shaft 434 to roll to the first direction side. Specifically, the rotation shaft 434 of the humidification rotor 43 is rotatable, so that the rotation shaft 434 is the first shaft on the contact surface between the rotation shaft 434 and the first shaft support surface 414a and the second shaft support surface 415a. The humidifying rotor 43 moves to the first direction side by the dynamic friction force T received from the support surface 414a and the second shaft support surface 415a.

  As shown in FIGS. 12 and 13, since the dynamic friction force T acts on the entire humidification rotor 43, the dynamic friction force T acts on the humidification rotor 43 in the horizontal direction of the tangent L3. A dynamic friction resolving force TA and a dynamic friction resolving force TB which is a force of the dynamic friction force T acting in a direction perpendicular to the tangent L3 are applied. As a result, the humidification rotor 43 is approaching the drive gear 44.

  Here, the dynamic friction resolving force TB is generated when the tangent L3 between the pitch circle C1 of the first gear 433a and the pitch circle C2 of the drive gear 44, and the first shaft support surface 414a and the second shaft support surface 415a. This is because the intersection angle θ3 with the extension surface S3 toward the one direction side is an acute angle.

  As a result, the distance between the axis of the rotating shaft 434 of the humidifying rotor 43 and the axis of the drive gear 44 approaches (see d1 and d2 (d1> d2) in FIG. 12), and the drive gear of the humidifying rotor 43 The pressing force against 44 increases.

  Therefore, the backlash provided between the teeth of the first gear 433a and the teeth of the drive gear 44 formed on the outer periphery of the humidification rotor 43 can be reduced. Therefore, the generation | occurrence | production of the damage and noise between the tooth surfaces of both the gears 44 and 433a can be suppressed.

  In addition, since the minimum backlash is required between the tooth surfaces of the first gear 433a and the drive gear 44 in order to keep the meshing of both gears well, the humidifying rotor 43 has the water tray 42 of the main body 11. When the humidifying rotor 43 is rotating, when the humidifying rotor 43 is rotating, it is arranged at a position where there is a minimum backlash between the gears 44 and 433a. Has been.

<Characteristics of the air conditioner 1 according to the present embodiment>
(1)
2. Description of the Related Art Conventionally, a humidifier has been proposed that has a rotating unit that holds a filter having adsorptivity and pumps water in a water storage container that stores water by rotation to supply moisture to the filter. In this humidifier, the air passing through the filter flows into the room as humid air by containing moisture adsorbed by the filter.

  Many of the rotating means rotate when the gear teeth formed on the rotating means mesh with the teeth of the driving gear to which the driving force is transmitted from the driving motor via the driving shaft.

  Here, a backlash for smoothly rotating the two gears is usually provided between the tooth surfaces of the two gears. However, if the backlash is large, the meshing between the teeth of both gears may be deteriorated, and there is a concern that abnormal noise is generated between the tooth surfaces of both gears.

  Therefore, in the present embodiment, first, the front-side bearing portion 14 and the rear-side bearing portion 15 that rotatably support the humidification rotor 43 (corresponding to the rotation means) via the rotation shaft 434 can roll the rotation shaft 434, respectively. The first shaft support surface 414a and the second shaft support surface 415a are supported. The front-side bearing portion 14 and the back-side bearing portion 15 further have first direction restriction surfaces 414b and 415b, and the first direction restriction surface 414b is in a state where the water tray 42 is accommodated in the main body portion 11. , 415b and the rotary shaft 434 are provided with a first clearance L1. Thereby, the humidification rotor 43 can move to the 1st direction side. Note that the first clearance L1 may be slightly shifted to the first direction side due to variations in dimensional tolerances and assembly tolerances of various parts such as the front-side bearing portion 14, the rear-side bearing portion 15, and the rotating shaft 434. , It has a dimension that can absorb this variation.

  Next, when the rotation shaft 434 of the humidification rotor 43 rotates together with the rotation of the entire humidification rotor 43, a dynamic friction force T is generated between the first shaft support surface 414a and the second shaft support surface 415a and the rotation shaft 434. To do. Further, the intersection angle between the tangent L3 between the pitch circle C1 of the first gear 433a and the pitch circle C2 of the drive gear 44 and the extension surface S3 of the first shaft support surface 414a and the second shaft support surface 415a in the first direction side. θ3 is an acute angle. Further, in a state where the water tray 42 is accommodated in the main body 11, the drive gear 44 is fixed so that the central axis thereof is positioned obliquely upward in the first direction with respect to the rotation shaft 434 in the front view. . As a result, the dynamic friction resolving force TA of the dynamic friction force T acting in the horizontal direction of the tangent L3 and the dynamic friction resolving force TB acting in the direction perpendicular to the tangent L3 act on the entire humidifying rotor 43. The humidifying rotor 43 can be brought close to the drive gear 44 by the dynamic friction resolving force TB. Therefore, the distance between the axis of the rotating shaft 434 of the humidifying rotor 43 and the axis of the drive gear 44 can be reduced, and the pressing force of the humidifying rotor 43 against the drive gear 44 can be increased.

  Thus, the backlash between the teeth of the first gear 433a and the teeth of the drive gear 44 can be reduced. Therefore, it is possible to suppress damage between the tooth surfaces of both gears 44 and 433a, generation of abnormal noise, and the like.

  In addition, since the first shaft support surface 414a and the second shaft support surface 415a are inclined surfaces that descend in the left direction, the rotating shaft 434 of the humidification rotor 43 easily rolls in the left direction. As a result, the dynamic frictional force T received by the rotating shaft 434 from the first shaft support surface 414a and the second shaft support surface 415a becomes larger, so that the backlash between the teeth of the first gear 433a and the teeth of the drive gear 44 is increased. Can be made smaller.

(2)
In the present embodiment, the second clearance L2 is provided between the second direction regulating surfaces 414c and 415c and the rotation shaft 434.

  Thereby, the dispersion | variation by the dimensional tolerance, assembly | attachment tolerance, etc. of the rotating shaft 434, the front side shaft support part 14, and the back side shaft support part 15 can be absorbed.

  The dimension of the second clearance L2 is a dimension that can ensure the meshing between the teeth of the first gear 433a and the teeth of the drive gear 44. By preventing the tooth tips of the first gear 433a and the drive gear 44 from coming off, unintentional rotation of the humidification rotor 43 can be prevented.

<The modification of the air conditioning apparatus 1 which concerns on this embodiment>
(A)
In the above-described embodiment, the first shaft support surface 414a and the second shaft support surface 415a have been described as inclined surfaces that descend in the left direction. However, the present invention is not limited to this, and for example, a downward gradient is applied. It may be an inclined surface in the part, or may be an upwardly inclined surface. Further, it may be a horizontal surface that does not have ascending or descending, or may be a curved surface.

  Even in these cases, the humidifying rotor 43 rotates together with the rotating shaft 434, so that the dynamic frictional force between the rotating shaft 434 and the first shaft support surface 414a and the second shaft support surface 415a by the rotation of the rotation shaft 434. T is generated. Accordingly, since the dynamic friction resolving force TB of the first gear 433a with respect to the drive gear 44 is generated, the humidification rotor 43 can move in a direction approaching the drive gear 44.

(B)
In addition to the above embodiment, a member having a large frictional force, such as rubber, may be disposed on the first shaft support surface 414a and the second shaft support surface 415a.

  Thereby, when the humidification rotor 43 moves to the first direction side, the dynamic friction force T generated between the rotation shaft 434, the first shaft support surface 414a, and the second shaft support surface 415a is increased. The backlash between the tooth surfaces of the gear 433a and the drive gear 44 can be further reduced.

  In the present invention, in the humidifying device in which the rotating means rotates when the gears mesh with each other, even if variations in dimensions, etc. occur in the design, the gears are kept in proper meshing, thereby suppressing the occurrence of abnormal noise or the like. It is in providing the humidification apparatus which can do.

4 Humidification unit (humidifier)
14 Front bearing part (support part)
15 Back side bearing (support)
43 Humidification rotor (rotating body for humidification)
44 Drive gear (second gear)
414a First shaft support surface (support surface)
414b First direction regulating surface 414c Second direction regulating surface 415a Second shaft support surface (support surface)
415b First direction regulating surface 415c Second direction regulating surface 433a First gear 434 Rotating shaft of humidifying rotor (Rotating shaft of humidifying rotor)
C1 Pitch circle of the first gear C2 Pitch circle of the drive gear (Pitch circle of the second gear)
L1 First clearance L2 Second clearance L3 Tangent line between pitch circle of first gear and pitch circle of drive gear (tangent line between pitch circle of first gear and pitch circle of second gear)
S3 Extension surface to the first direction side of the first shaft support surface and the second shaft support surface (extension surface to the first direction side of the support surface)
θ3 Intersection angle of the tangent line between the pitch circle of the first gear and the pitch circle of the drive gear and the extension surface of the first shaft support surface and the second shaft support surface in the first direction (the first gear pitch circle and the first gear (An intersection angle between the tangent to the pitch circle of the two gears and the surface extending in the first direction of the support surface)

JP 2009-24918 A

Claims (8)

A humidifying rotating body (43) having a first gear (433a) formed on the outer periphery, having a rotating shaft (434), and rotating together with the rotating shaft (434);
A second gear (44) that meshes with the first gear (433a) and rotates the humidifying rotator (43) by transmitting a driving force from the driving means (45);
The rotating shaft (434) has a substantially flat support surface (414a, 415a) that allows the rotating shaft (434) to roll in a first direction approaching the second gear (44), and the humidifying rotating body (43) is provided. Supporting parts (14, 15) to support;
A humidifier (4) comprising: In front view, the tangent line (L3) between the pitch circle (C1) of the first gear (433a) and the pitch circle (C2) of the second gear (44), and the first of the support surfaces (414a, 415a). The angle of intersection (θ3) with the extended surface (S3) toward the one direction is an acute angle,
The humidifier (4) according to claim 1. The second gear (44) is arranged such that a central axis is positioned obliquely above the first direction with respect to the rotation axis (434) when viewed in the rotation axis direction.
The humidifier (4) according to claim 1 or 2. The support portions (14, 15)
A first direction regulating surface (414b, 415b) for regulating rolling of the rotating shaft (434) in the first direction;
A first clearance (L1) is provided between the rotating shaft (434) and the first direction regulating surface (414b, 415b) of the support portion (14, 15).
The humidifier (4) according to any one of claims 1 to 3. The support portions (14, 15)
A second direction regulating surface (414c, 415c) for regulating rolling of the rotating shaft (434) in a second direction opposite to the first direction;
A second clearance (L2) is provided between the rotation shaft (434) and the second direction regulating surface (414c, 415c) of the support portion (14, 15).
The humidifier (4) according to any one of claims 1 to 4. Even if the rotating shaft (434) rolls in the second direction and the second clearance (L2) is eliminated, the meshing between the first gear (433a) and the second gear (44) is ensured.
The humidifier (4) according to claim 5. The support surfaces (414a, 415a) have a downwardly inclined surface in the first direction,
The humidifier (4) according to any one of claims 1 to 6. The support surface (414a, 415a) is provided with a member having a large frictional force.
The humidifier (4) according to any one of claims 1 to 7.

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