JP3608495B2 - Humidification rotor structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a humidification rotor that is a constituent member of a humidification unit that discharges moisture adsorbed from outside air into indoor supply air to humidify the supply air.
[0002]
[Prior art]
In general, a humidification rotor is a disk made of an adsorbent such as silica gel, and is driven to rotate around a support shaft in a casing constituting a humidification unit, and outside air sucked by a moisture absorption fan on one side of the rotating disk. While adsorbing moisture in the outside air, the air is sucked into the other side of the rotating disk by a humidifying fan, and the outside air heated by the heater is allowed to flow through to release the adsorbed moisture into the outside air. It is supposed to be sent indoors.
[0003]
Conventionally, as such a humidification rotor structure, what is shown, for example in FIG. 2 (A), (B) is known. This humidifying rotor structure has a disk shape made of an adsorbent such as silica gel between a large-diameter ring-shaped driven gear 11 having teeth 12 on the outer peripheral surface and a small-diameter centering 13 disposed at the center of the driven gear 11. The adsorbent 14 is provided with a humidifying element 15, and the outside air sucked in by the moisture absorbing fan flows through the left semicircular portion of the adsorbent 14 from the bottom to the top in FIG. 2B is sucked in from the top to the bottom by the humidification fan in FIG. 2B, and the outside air heated by the heater flows through.
[0004]
As shown in FIG. 2 (B), the humidifying element 15 is rotatably supported on a rib-shaped bottom frame 18 in the casing by inserting a support shaft 17 through a centering 13, and the teeth of the driven gear 11. 12, a drive gear 19 pivotally supported on the bottom frame 18 at a distance D from the center of the support shaft 17 meshes with the humidifying element 15 to rotate.
[0005]
[Problems to be solved by the invention]
However, in the conventional humidifying rotor structure, the center of the support shaft 17 that is the rotation center of the driven gear 11 on the outer periphery of the humidifying element 15 and the center of the drive gear 19 that meshes with the driven gear 11 are considerably long on the same bottom frame 18. Since the processing accuracy such as the roundness and tooth shape of the driven gear 11 is deteriorated because the distance D is separated, if the teeth to be meshed are too close to each other, the tooth tip and the bottom of the tooth collide with each other, and an abnormal noise is generated. If the teeth are too far apart, there is a problem that the meshing becomes loose, and tooth wear and rotation unevenness occur. On the other hand, in order to prevent such a problem from occurring, it is necessary to increase the processing accuracy and mounting accuracy of the driven gear 11 and the like, resulting in an increase in manufacturing cost.
[0006]
Accordingly, an object of the present invention is to devise means for accurately positioning a driven gear that is likely to cause a dimensional error with respect to a drive gear so that both gears can be accurately configured without causing abnormal noise or wear. It is providing the humidification rotor structure which can be meshed | engaged.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, a humidifying rotor structure of the present invention is provided on a bottom frame, is fitted with a rotatable disc-shaped humidifying element, and is fitted and fixed to the outer periphery of the humidifying element. A ring-shaped driven gear having a ring, a drive gear that protrudes from the bottom frame and meshes with the driven gear to rotationally drive the driven gear, and is provided at a position facing the drive gear of the bottom frame. And a guide member for guiding the driven gear in sliding contact with the peripheral surface.
[0008]
In the humidifying rotor structure, a disc-shaped humidifying element with a driven gear fitted and fixed to the outer periphery is rotatably provided on the bottom frame, and the drive is provided on the outer peripheral surface of the driven gear so as to protrude from the bottom frame. The gear meshes to drive the driven gear. The driven gear that is rotationally driven is slidably guided on the inner peripheral surface by a guide member provided at a position facing the drive gear of the bottom frame. The distance between the guide member on the bottom frame and the drive gear is much shorter than the distance between the humidifying element as a conventional pivot point, that is, the center of the driven gear and the drive gear. Therefore, even if the roundness of the driven gear and the processing accuracy of the tooth profile are somewhat poor, the driven gear and the drive gear are sandwiched between the guide member and the drive gear pivot and are forcibly held at a constant interval. To be engaged. As a result, when the humidification rotor is driven to rotate, the drive gear and the driven gear do not generate noise or wear.
[0009]
The humidification rotor structure of one embodiment of the present invention is characterized in that the guide member has a substantially arc shape.
[0010]
In the humidified rotor structure, the guide member that is in sliding contact with the inner peripheral surface of the driven gear is substantially arc-shaped, and the distance between the guide member and the drive gear in the circumferential direction of the driven gear is the narrowest at a position facing the drive gear. . Therefore, the contact length between the guide member and the driven gear is shortened, so that wear due to contact between the two can be suppressed and the driven gear can be smoothly rotated.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.
1A and 1B are a plan view showing a humidifying rotor structure according to an embodiment of the present invention and a cross-sectional view taken along the line bb. The humidifying rotor structure is an inner peripheral surface of a driven gear 11. Since the configuration is the same as that of the conventional example described with reference to FIG. 2 except that the guide member 1 that is in sliding contact is provided, the same number is assigned to the same member.
[0012]
The humidifying element 15 has a disk-shaped adsorbent 14 made of silica gel adsorbent fitted between a large-diameter driven gear 11 having teeth 12 on the outer peripheral surface and a centering 13 disposed at the center thereof. A small-diameter drive gear 19 pivotally supported on the bottom frame 18 by the teeth 12 of the outer peripheral driven gear 11 while being pivotally supported on the bottom frame 18 by inserting the support shaft 17 through the center ring 13. Are engaged, and the humidifying element 15 is driven to rotate.
[0013]
The guide member 1 is provided at a position facing the drive gear 19 of the bottom frame 18 so as to slide in contact with the inner peripheral surface of the driven gear 11 and guide the driven gear. As can be seen from FIG. 1B, the drive gear 11 has an L-shaped cross section having a flange 11a inside the lower end and teeth 12 on the outside upper portion, and the guide member 1 contacts the flange 11a from the inside. Touch. Therefore, the guide member 1 is thin, and the upper surface thereof is substantially in contact with the adsorbent 14 of the humidifying element 15.
Further, as can be seen from FIG. 1 (A), the guide member 1 is formed in an arc having a smaller radius of curvature than the driven gear 11, and the distance between the guide member 1 and the axis of the drive gear 19 in the circumferential direction of the driven gear 11. However, as indicated by d in FIG. 1B, they are arranged so as to be the shortest on the line connecting the drive gear 19 and the support shaft 17.
In the plan view of FIG. 1A, the guide member is hidden under the adsorbent 14 and should be drawn with a broken line, but is drawn with a solid line for clarity.
[0014]
The humidifying rotor structure operates as follows.
A support shaft 17 is inserted into the centering 13 at the center of the adsorbent 14, and the humidifying element 15 pivotally supported on the bottom frame 18 is rotationally driven by a drive gear 19 that meshes with the driven gear 11 on the outer periphery. The driven gear 11 that is rotationally driven is guided in sliding contact with the inner peripheral surface of the flange 11 a by the guide member 1 provided at a position facing the drive gear 19 of the bottom frame 18. The distance d between the guide member 1 on the bottom frame 18 and the shaft center of the drive gear 19 is set to an interval when the gears 11 and 19 are properly meshed with each other, and the conventional humidification described in FIG. It is much smaller than the distance D between the center of the support shaft 17 which is the pivot point of the element and the axis of the drive gear 19.
Therefore, even if the roundness of the driven gear 11 and the processing accuracy of the tooth profile of the tooth 12 are somewhat poor, the driven gear 11 and the drive gear 19 are forcibly sandwiched between the guide member 1 and the pivot shaft of the drive gear 19. Since the distance d is maintained at a constant distance d, the gears 11 and 19 are accurately meshed with each other. As a result, when the humidifying rotor 15 is driven to rotate, the meshing gears 11 and 19 are too close to each other as in the prior art, and abnormal noise is generated, or too far away and tooth wear and rotational unevenness occur. There is no.
[0015]
Further, the guide member 1 forms an arc having a smaller radius of curvature than the driven gear 11, and the distance d between the guide member 1 and the driven gear 19 is the narrowest distance d on the line connecting the drive gear 19 and the support shaft 17. Therefore, the contact length in the circumferential direction between the guide member 1 and the driven gear 12 is shortened, wear due to contact between the guide member 1 and the driven gear 12 is suppressed, and the driven gear 11 can be smoothly rotated.
[0016]
In the above embodiment, the centering 13 is provided at the center of the humidifying element 15 and the support shaft 17 protruding from the bottom frame 18 is inserted into the centering 13. However, the center hole is eliminated and the guide member 1 is moved into the driven gear 11. It is also possible to mount three or more humidifying elements 15 on the bottom frame 18 by providing three or more at equal intervals in the circumferential direction so as to contact the circumference. If it carries out like this, the effective area of a humidification element can be increased.
[0017]
【The invention's effect】
As is apparent from the above description, the humidifying rotor structure of the present invention has a disk-shaped humidifying element with a driven gear fitted and fixed to the outer periphery thereof, rotatably provided on the bottom frame, and protruded from the bottom frame. The drive gear is meshed with the outer periphery of the driven gear and is driven to rotate, while a guide member is provided at the position facing the drive gear of the bottom frame so as to slidably contact the inner peripheral surface of the driven gear and guide it. Since the gear is sandwiched between the guide member and the drive gear pivot and is forcibly held at a short fixed interval, even if the roundness of the driven gear and the processing accuracy of the teeth are somewhat worse, the two gears are engaged correctly. Thus, it is possible to prevent the generation of abnormal noise and gear wear when the humidifying rotor is driven to rotate with a simple configuration.
[0018]
In one embodiment of the present invention, since the guide member has a substantially arc shape, the contact length in the circumferential direction between the guide member and the driven gear is shortened, and the humidification rotor rotates smoothly while suppressing wear due to contact between the two. Can drive.
[Brief description of the drawings]
FIG. 1 is a plan view showing an embodiment of a humidifying rotor structure of the present invention and a cross-sectional view taken along the line bb.
FIG. 2 is a plan view showing a conventional humidifying rotor structure and a sectional view taken along the line bb.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Guide member 11 Driven gear 12 Tooth 13 Centering 14 Adsorbent 15 Humidification rotor 17 Support shaft 18 Bottom frame 19 Drive gear

Claims (2)

A disc-shaped humidifying element ( 15 ) provided on the bottom frame (18) and rotatable;
A ring-shaped driven gear (11) fitted and fixed to the outer periphery of the humidifying element ( 15 ) and having teeth (12) on the outer peripheral surface;
A drive gear (19) projecting from the bottom frame (18) and meshing with the driven gear (11) to rotationally drive the driven gear (11);
A guide member (1) provided at a position facing the drive gear (19) of the bottom frame (18), and slidably contacting the inner peripheral surface of the driven gear (11) to guide the driven gear (11); A humidifying rotor structure characterized by that. The humidification rotor structure according to claim 1, wherein the guide member (1) has a substantially arc shape.

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