JP2001124402A - Air outlet for air conditioner indoor machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the occurrence of vapor condensation to a stepping motor to drive upper and lower blades during cooling operation, to equalize a lateral gap between upper and lower blades, and to prevent the occurrence of stagnation of wind. SOLUTION: Upper and lower blades in a wind direction pivotally supported and vertically changing a wind direction are situated in an air outlet. The upper and lower blades in a wind direction are coupled at right and left shaft ends to a stepping motor and the bearings of the shafts of the upper and lower shaft are formed in a ring-form shape.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the shape of an air outlet of an indoor unit of an air conditioner, which prevents dew condensation on a stepping motor for driving the upper and lower blades during a cooling operation and makes the left and right gaps between the upper and lower blades uniform. Stabilizes the air volume by preventing wind stagnation.

[0002]

2. Description of the Related Art During a cooling operation of an indoor unit 101 of an air conditioner,
In order to prevent dew condensation of the stepping motor 104 that drives the upper and lower blades 103 near the air outlet 102, as shown in FIG. 4, upper and lower blade shafts 105 through which cool air leaks and hole-shaped bearings 106 provided on the left and right sides of the outlet. To reduce the clearance or to block the stepping motor from cold air with thermal insulation.

As shown in FIG. 5, the left and right gaps 107 between the upper and lower blades are large so that the blades do not hit the air outlet.

As shown in FIG. 6, a heat insulating material 108 or the like is attached each time to stabilize the air volume, thereby eliminating stagnation.

[0005]

However, the above-mentioned prior art has the following problems.

First, reducing the clearance between the upper and lower blade shafts and the blow-out hole bearing increases friction at the time of driving the upper and lower blades, which may make driving difficult. Further, shielding the stepping motor from the cool air by the heat insulating material is restricted by space, and increases the number of parts.

Further, reducing the gap between the upper and lower blades and the left and right outlets increases the possibility that the upper and lower blades will hit the outlets.

[0008] Further, if a heat insulating material for stabilizing the air volume is stuck, the number of parts and the number of man-hours for sticking are increased.

The present invention has been made in view of the above problems, and in order to prevent dew condensation on the stepping motor, the clearance between the upper and lower blade shafts and the bearing is not reduced, and the space around the stepping motor is reduced. This can be realized without increasing the size or increasing the number of parts.

Further, it is possible to minimize the contact between the upper and lower blades and the outlet while reducing the left and right gaps between the upper and lower blades.

It is another object of the present invention to provide a shape of an air outlet of an indoor unit of an air conditioner in which air volume is stabilized without attaching a heat insulating material or the like.

[0012]

In order to prevent dew condensation on the stepping motor, the indoor heat exchanger, the blower fan, and the air inside the indoor unit according to claim 1 of the present invention. It is pivotally supported by the outlet so that it can rotate vertically,
A wind improving lower blade for changing a wind direction in a vertical direction is provided, the wind improving lower blade is connected to a stepping motor at left and right shaft ends, and a bearing of the upper and lower blade shafts is formed in a ring shape.

[0013] A ring-shaped projection is provided in the vicinity of the bearing of the upper and lower blade shafts.

[0014] According to a third aspect of the present invention, there is provided a blowout grill in the vicinity of the upper and lower blade bearings, which is provided with a shielding rib.

The second object of the present invention is to reduce the gap between the left and right outlets of the upper and lower blades in order to prevent the possibility that the upper and lower blades contact the outlets to be increased.
And a ring-shaped projection near the bearing of the upper and lower blade shafts.

In order to prevent an increase in the number of parts and the number of man-hours for attaching the heat insulating material for stabilizing the air volume, which is the next problem, it is preferable that the blow-out in the vicinity of the upper and lower blade bearings according to claim 3 of the present invention. The grill has a shielding rib.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

FIG. 1 is an enlarged perspective view of a left portion of an air outlet of an air conditioner indoor unit according to the present invention. In FIG. 1, 1 is upper and lower blades, 2 is an outlet grill, 3 is an air outlet,
4 is an upper and lower blade shaft, 5 is a ring-shaped upper and lower blade bearing, and 6 is an upper and lower blade driving stepping motor.

FIG. 2 is an enlarged front view and a perspective view of the left part of the air outlet of the indoor unit of the air conditioner of the present invention. In FIG. 2, reference numeral 7 denotes a ring-shaped projection provided on the upper and lower blade shafts near the bearing.

FIG. 3 is an enlarged perspective view of the left part of the air outlet of the indoor unit of the air conditioner of the present invention. In FIG. 3, reference numeral 8 denotes a shielding rib provided on the blow grill near the upper and lower blade bearings.

[0021]

The present invention has the following effects because it is configured as described above.

In the indoor unit according to the first aspect of the present invention,
An indoor heat exchanger, a blower fan, and a wind-enhancing lower blade that is vertically rotatably supported by the air outlet and that changes the wind direction in a vertical direction, wherein the wind-enhancing lower blade is a stepping motor at the left and right shaft ends. By making the bearings of the upper and lower blade shafts ring-shaped, it is possible to simply reduce the clearance between the upper and lower blade shafts and the hole-shaped bearings of the blowout grill to prevent the leakage of cool air by using a ring-shaped bearing. It is possible to obtain the effect of reducing the increase in friction during driving as compared with the case where the clearance is reduced.

Further, by providing a ring-shaped protrusion near the bearing of the upper and lower blade shafts according to the second aspect, a large gap in the left-right direction is conventionally provided in order to prevent contact between the blade end and the blowout grill. On the other hand, since the contact with the blowout grill becomes a line contact at the tip of the ring, the frictional resistance is reduced, and the effect of reducing the lateral gap between the upper and lower blades and the blowout grill is achieved.

Further, by providing a shielding rib on the blow grill near the upper and lower blade bearings according to the third aspect, the same effect can be obtained without using a heat insulating material conventionally attached to the blow grill to stabilize the air volume. .

Further, the above-mentioned claims 1 and 2 according to claim 4 are provided.
And 3 have the effect of simultaneously solving and complementing the above problems.

[Brief description of the drawings]

FIG. 1 is an enlarged perspective view of a left portion of an air outlet of an air conditioner indoor unit according to the present invention.

FIG. 2 is an enlarged front view and a perspective view of a left portion of an air outlet of the air conditioner indoor unit according to the present invention.

FIG. 3 is an enlarged perspective view of a left portion of an air outlet of the indoor unit of the air conditioner of the present invention.

FIG. 4 is an enlarged perspective view of a left portion of an air outlet of a conventional air conditioner indoor unit of the present invention.

FIG. 5 is a front view of a conventional air conditioner indoor unit of the present invention with upper and lower blades closed, and an enlarged view of a left outlet.

FIG. 6 is a front view of the conventional air conditioner indoor unit of the present invention with upper and lower blades opened and an enlarged view of a left outlet.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 upper and lower blades 2 outlet grill 3 air outlet 4 upper and lower blade shaft 5 ring-shaped upper and lower blade bearings 6 stepper motor for driving upper and lower blades 7 ring-shaped projections provided near bearings on upper and lower blade shafts 8 blowout near upper and lower blade bearings Shield ribs provided on the grill 9 Insulation material attached to the grille for stabilizing the air volume

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Daiji Tsuji 1006 Kazuma Kadoma, Kadoma-shi, Osaka Matsushita Electric Industrial Co., Ltd. F-term (reference) 3L051 BG06 BH04 3L081 AA02 AA09 AB05 FA07 FB01 FB06 HA01 HB06

Claims (4)

[Claims] An indoor heat exchanger, a blower fan, and a wind-enhancing lower blade that is rotatably supported in a vertical direction by an air outlet grill, and that changes a wind direction in a vertical direction, are provided inside the indoor unit. An air outlet of an indoor unit of an air conditioner, wherein the lower blade for improving wind is connected to a stepping motor at left and right shaft ends, and bearings of the upper and lower blade shafts are formed in a ring shape. 2. An air outlet of an air conditioner indoor unit having a ring-shaped projection near a bearing of the upper and lower blade shafts. 3. An air outlet of an air conditioner indoor unit having a shielding rib on an outlet grill near the upper and lower blade bearings. 4. An air outlet of an air conditioner indoor unit according to claim 1, 2 or 3.