JP2012229872A - Indoor unit of air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a wind direction plate hardly deformed even if having a seal member.SOLUTION: This indoor unit of an air conditioner comprises: a box 2 embedded in a ceiling; a decoration panel 1 having a suction port 3 for sucking air in a room and a blow-out port 5 for blowing our air into the room and provided at a bottom part of the box; the wind direction plate 4 which is arranged at the blow-out port, turns by a rotating shaft 15 at its one end at the side of the suction port, and controls a wind direction; and a bearing 12 for supporting the rotating shaft. The indoor unit also comprises a seal member 11 which is arranged at the decoration panel and blocks a clearance between the blow-out port and the rotating shaft, and to which the end face 16 of the wind direction plate is pushed as an opening degree of the wind direction plate becomes large, and the wind direction plate moves the bearing to the direction of a force received from the seal member.

Description

  The present invention relates to an indoor unit of an air conditioner.

  Conventionally, a housing embedded in the ceiling, a suction port for sucking in indoor air and a blowout port for blowing air into the room, a decorative panel provided at the bottom of the case, and a suction provided in the blowout port There is known an indoor unit of an air conditioner that includes a wind direction plate in which one end on the mouth side is rotated by a rotation shaft to control the wind direction.

  For example, in Japanese Patent Application Laid-Open No. 2001-174043, the shaft portion of the wind direction changing plate is composed of a shaft projecting on both sides of the rear end portion of the wind direction changing plate and a bearing provided near the surface of the decorative panel. By configuring, it is disclosed that the blown air flow delivered from the blowout port does not short circuit to the suction port.

JP 2001-174043 A

  However, in patent document 1, it does not fully consider that the clearance gap between the rear-end part of a wind direction board and a decorative panel changes according to the rotation angle of a wind direction board because a wind direction board rotates around an axis | shaft. For example, a method may be considered in which a sponge-like seal member is brought into contact with the wind direction plate to eliminate the gap between the air outlet and the wind direction plate, thereby blocking air flowing under the wind direction plate through the gap. However, when the wind direction plate rotates around the axis, the elastic body contacts and compresses the wind direction plate, so that a repulsive force is generated, and the wind direction plate 4 receiving the repulsive force is deformed as shown in FIG. It will be.

  An object of the present invention is to make it difficult to deform a wind direction plate even when a seal member is provided.

  In order to achieve the above object, the present invention has a casing embedded in a ceiling, a suction port for sucking indoor air, and an outlet for blowing air into the room, and is provided at the bottom of the casing In an indoor unit of an air conditioner, comprising: a panel; a wind direction plate that is provided at the air outlet and has one end on the suction port side rotated by a rotation shaft to control the wind direction; and a bearing that supports the rotation shaft. A sealing member is provided on the decorative panel, closes a gap between the air outlet and the rotation shaft, and includes a seal member that presses an end face of the wind direction plate as the opening degree of the wind direction plate increases, the wind direction plate from the seal member The bearing is moved in the direction of the force to be received.

  According to the present invention, it is possible to make it difficult to deform the wind direction plate even when the seal member is provided.

It is a figure which shows the indoor unit of the air conditioner formed by applying the 1st form of this invention. It is an expanded sectional view of the blower outlet portion of the indoor unit of the air conditioner to which the present invention is applied. It is an enlarged view of the part which attached the bearing to the wind direction board. It is an enlarged view which shows the indoor unit of the air conditioner formed by applying the 2nd form of this invention. It is a figure which shows the modification of the wind direction board which concerns on a prior art example.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1: has shown the block diagram of the indoor unit of the air conditioner formed by applying the 1st form of this invention.
An indoor unit of an air conditioner includes a decorative panel 1 and a casing 2 that is provided on the upper surface of the decorative panel 1 and embedded in a ceiling. The decorative panel 1 includes a suction port (suction grill) 3, and an air outlet 5 including a wind direction plate 4 is formed around the suction port 3. A drive source such as a heat exchanger 6 and a motor 7 and a blower 8 are installed in the housing 2. By driving the blower 8, the indoor air is sucked into the blower 8 from the suction port 3 and is heat-exchanged by the heat exchanger 6 as shown by an arrow 9 in the figure, and then again from the blowout port 5. It is blown into the room.

  The wind direction plate 4 has a long side along one side of the suction port 3 and a short side that is the air blowing direction. The wind direction plate 4 is provided at the blowout port 5, and one end on the suction port 3 side of the wind direction plate 4 has a rotation axis. The direction of the wind is controlled by rotating by 15. The wind direction plate 4 has a cantilever structure that rotates on the suction port 3 side, and includes a seal member 11 that closes a gap between the air outlet 5 and the rotary shaft 15. The seal member 11 extends over the long side of the wind direction plate 4. By being provided, the air flowing through one end of the wind direction plate 4 on the suction port 3 side is blocked, and the air flows only along the upper surface (ceiling side) of the wind direction plate 4, and on the lower surface side (floor side) of the wind direction plate 4. Air does not flow. Thereby, dew condensation can be suppressed without cooling the lower surface of the wind direction plate 4.

FIG. 2 is an enlarged cross-sectional view of the blowout port portion of the indoor unit of the present embodiment, and FIG. 3 is an enlarged view of a portion where a bearing is attached to the wind direction plate.
2 is an exploded view of the bearing 12, the elastic member 13, and the screw 14. As shown in FIG. The center of the cross of the rotation shaft 15 is the rotation center of the wind direction plate 4.

  FIG. 3A shows a state in which the elastic member 13 is attached to the bearing 12 and the wind direction plate 4 is closed. In a state where the wind direction plate 4 is closed or the opening degree is small, the seal member 11 comes into contact with the rotary shaft 15 of the wind direction plate 4 and the end surface 16 which is the lower portion thereof, so that the suction port 3 side of the wind direction plate 4 and Block air leaking from the long side. However, when the opening degree of the wind direction plate 4 is increased, the end surface 16 of the wind direction plate 4 is pressed against the seal member 11 with the rotary shaft 15 as a fulcrum, and the deformation amount of the seal member 11 is also increased.

  FIG. 3B shows a state in which the opening degree of the wind direction plate 4 in which the elastic member 13 is not attached to the bearing 12 is increased. When the deformation amount of the seal member 11 is increased, the repulsive force of the seal member 11 is also increased, so that the wind direction plate 4 receiving the repulsive force is bent and deformed. The wind direction plate 4 has a rotation shaft 15 on each of the short sides (both sides of the wind direction plate 4), and the rotation shaft 15 is covered and supported by the bearing 12, so that the wind direction plate 4 is rotated when the wind direction plate 4 rotates. Is difficult to deform at the end in the long side direction, and the middle part is particularly greatly deformed.

  FIG. 3C shows a state in which the opening degree of the wind direction plate 4 in which the elastic member 13 is attached to the bearing 12 is increased. In the present embodiment, one end of the rotating shaft 15 is used as a driving shaft, and the other bearing 12 on the opposite driving shaft side is used with an elastic member 13 such as rubber so that the bearing 12 can move in the radial direction of the rotating shaft 15. The bearing 12 is elastically supported (so that the relative position to the decorative panel 1 changes). In response to the repulsive force that the wind direction plate 4 receives from the seal member 11, the elastic member 13 is distorted so as to absorb the repulsive force. The bearing 12 also moves by the amount of distortion of the elastic member 13. In the figure, the bearing 12 has moved from the original position to the lower right. That is, when the wind direction plate 4 rotates, the bearing 12 itself that supports the rotating shaft 15 is moved in the direction of the force that the wind direction plate 4 receives from the seal member 11, thereby making it difficult to deform the wind direction plate 4. it can.

  Although the bearing 12 is provided in the decorative panel 1, the bearing 12 is supported by the decorative panel 1 via the elastic member (1st elastic member) 13a so that the bearing 12 can move. If the elastic member 13a is provided between the bearing 12 and the decorative panel 1, at least the bearing 12 can move. The bearing 12 is tightened with a screw 14 from the outside. However, since the elastic member (second elastic member) 13b is also provided between the bearing 12 and the screw 14, the likelihood in the vertical direction of the bearing 12 is increased. Even if a repulsive force of the seal member 11 is generated, it can be appropriately absorbed by the elastic members 13a and 13b, and a larger deformation of the wind direction plate 4 can be suppressed.

  FIG. 4 shows an enlarged view of the second embodiment of the present invention. In the figure, an elastic member between the decorative panel 1 and the bearing 12 and an elastic member between the bearing 12 and the screw 14 are integrally formed. For example, the elastic member 13 is provided with a concave groove on the entire circumference so that it can be inserted into the fixing hole of the bearing 12. By adopting such a configuration, the number of parts can be reduced and the above-described effects can be obtained.

1 Cosmetic panel 2 Housing 3 Suction port (suction grill)
4 wind direction plate 5 outlet 6 heat exchanger 7 motor 8 blower 9, 10 air flow 11 seal member 12 bearing 13 elastic member 13a first elastic member 13b second elastic member 14 screw 15 rotating shaft 16 end face

Claims (5)

A casing embedded in the ceiling, a suction port for sucking indoor air, and a blow-off port for blowing air into the room, a decorative panel provided at the bottom of the case, and the suction provided in the blow-out port In an indoor unit of an air conditioner provided with a wind direction plate whose one end on the mouth side is rotated by a rotation shaft to control the wind direction, and a bearing that supports the rotation shaft,
The sealing panel is provided on the decorative panel, closes a gap between the outlet and the rotation shaft, and includes a seal member that presses an end face of the wind direction plate as the opening degree of the wind direction plate increases.
The indoor unit of an air conditioner, wherein the wind direction plate moves the bearing in a direction of a force received from the seal member.   The air conditioner indoor unit according to claim 1, wherein the bearing includes an elastic member that absorbs a force received from the seal member.   The air conditioner indoor unit according to claim 2, wherein the elastic member is provided between the bearing and the decorative panel.   3. The air conditioner indoor unit according to claim 2, wherein the bearing is sandwiched between the plurality of elastic members.   The indoor unit of an air conditioner according to claim 4, wherein the plurality of elastic members are integrally formed members.

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