JP2011133158A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner capable of avoiding sucking of indoor air into a blowout port and preventing generation of surging and dew formation at the blowout port even when air quantity blown out from the blowout port is small. <P>SOLUTION: A plurality of ribs 9 are erected at a portion corresponding to a dummy blowout part 2a on an upper face of a vertical wind direction plate 8 rotatably journaled to the blowout port 2. The first rib 9a, second rib 9b, third rib 9c and fourth rib 9d are formed in the direction at a right angle with respect to a body, and have the same thickness and depth dimension. The height dimension is formed to increase step by step from the first rib 9a to the fourth rib 9d. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an air conditioner, and more particularly to a configuration of a wind direction plate provided at an air outlet.

  As shown in FIG. 4, the conventional air conditioner opens the air outlet 31 from the front lower portion to the bottom surface of the indoor unit main body 30, and guides the air blowing direction upward or downward to the air outlet 31. The horizontal blades 32 are arranged and pivotably supported. The upper guide surface for guiding the blown air from the horizontal blade 32 is formed in a slightly curved arc shape.

  On the guide surface of the horizontal blade 32, a plurality of blown air guides 33 are formed at positions on both sides. The blowout air guide 33 has a triangular cross section and a trapezoidal cross section, and is arranged so as to deflect the blowout air on the inside toward the outside of the horizontal blades 32.

  When the operation is started, the blowing wind is guided by the guide surface of the horizontal blade 32 and deflected upward, but the strong blowing wind on the inside is guided outward by the blowing wind guide 33, thereby On the side of the horizontal blade 32, a strong blowing air flows on both the upper and lower surfaces, and this blowing wind wraps the side of the horizontal blade 32, so that the entrainment of room air is suppressed and the cooling operation is performed. It is possible to prevent the occurrence of condensation. Furthermore, since the lower surface of the horizontal blade 32 has an arc shape that bulges outward, the blown air that is attracted becomes a flow that adheres to the arc-shaped surface, further suppressing the entrainment of room air.

  However, when the amount of air blown from the blower outlet 31 is weak, the blown air is not sufficiently guided outward, the room air is caught in the blower outlet 31, and so-called surging occurs in the vicinity of the blower outlet 31. There was a risk of it occurring.

JP-A-6-288605 (page 3, FIG. 1)

  In view of the above problems, the present invention prevents air from being entrained in the air outlet and prevents surging and condensation from occurring in the air outlet even when the amount of air blown from the air outlet is small. The purpose is to provide a harmony machine.

  In order to solve the above problems, the present invention accommodates a heat exchanger and a blower fan in a main body having a suction port and a blower outlet, and pivotally supports a vertical wind direction plate at the blower outlet. The air conditioner has a configuration in which a plurality of ribs are provided on the side portion of the guide surface of the up-and-down airflow direction plate, the height of which increases sequentially from the side of the main body toward the center.

  According to the first aspect of the present invention, the warm air in the room that has flowed back to the air outlets collides with the ribs that increase stepwise in order from the outside of the wind direction plate, and the flow is blocked. Since the air temperature is higher than the dew point of the air and the backflowed air does not enter the lower part of each rib, it can prevent the dew condensation phenomenon and collide with each rib to enter the air outlet. Thus, it is possible to avoid a collision with the blowing air blown from the outlet, and to prevent the occurrence of a surging phenomenon and condensation of the blowing air.

It is the external appearance perspective view and sectional drawing of the air conditioner by this invention. It is a perspective view which shows a blower outlet. It is the perspective view and sectional drawing which show the rib provided in the wind direction board. It is a perspective view which shows the prior art example of a wind direction board.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail as examples based on the attached drawings.

  As shown in the external perspective view of FIG. 1 (A), the air conditioner according to the present invention is provided with a suction port 1 in the upper front portion and a blower outlet 2 in the lower front portion. Further, a display unit 10 composed of a plurality of LEDs and a receiving unit 10a for receiving a signal from a remote controller are provided on the side of the air outlet 2, and the air outlet 2 is pivotally supported to be rotatable. The up-and-down air direction plate 8 is provided, and the up-and-down air direction plate 8 shields the air outlet 2 when the operation is stopped.

  As shown in the cross-sectional view of FIG. 1 (B), the air flow path connecting the suction port 1 and the blower port 2 includes fins arranged in parallel and heat transfer tubes arranged so as to be orthogonal to the fins. And an inverted V-shaped heat exchanger 3 composed of a front lower portion 3b, a front upper portion 3a, and a rear upper portion 3c, and air exchanged by the heat exchanger 3 is sent into the room from the outlet 2 A blower fan 4 is provided. Further, below the front lower portion 3b, a front dew tray 5 that receives and stores condensed water dripping from the front lower portion 3b and the front upper portion 3a is provided, and below the rear upper portion 3c, A rear dew tray 6 for receiving and storing condensed water dripping from the rear upper portion 3c is provided. In addition, a plurality of left and right wind direction plates 7 for drifting the blown air to be sent out in the left-right direction are provided in the blow-out passage connecting the blower fan 4 and the blow-out port 2, and the blow-out port 2 rotates as described above. An up-and-down airflow direction plate 8 that is freely supported is provided.

  As shown in the perspective view of the air outlet 2 in FIG. 2, an electrical component box is arranged on the right side inside the main body, so that the right end portion of the air outlet 2 is a dummy air outlet where no air is blown out. 2a. During the cooling operation, when cold air is blown out from the air outlet 2, the indoor air at a high temperature flows back to the dummy air outlet 2a where the cold air is not blown out, collides with the air blown from the air outlet 2, and becomes blown air. A surging phenomenon may occur, and warm air may be cooled to cause condensation on the surface of the vertical wind direction plate 8.

  The side surface of the guide surface 11 that guides the blown air in the blowing direction of the up-and-down wind direction plate 8 that is pivotally supported by the blower outlet 2 is directed from the side of the main body toward the center, and is a perspective view of FIG. As shown in the figure, a plurality of ribs 9 are erected at a portion corresponding to the dummy blowout portion 2a. As shown in the perspective view of FIG. 3A, the rib 9 is erected in order from the outside of the up-and-down airflow direction plate 8 with a first rib 9a, a second rib 9b, a third rib 9c, and a fourth rib 9d. The first rib 9a, the second rib 9b, the third rib 9c, and the fourth rib 9d are formed in the short direction of the up-and-down wind direction plate 8, and have the same thickness and depth dimension. Further, the height dimension is formed so as to increase stepwise from the first rib 9a to the fourth rib 9d.

  Next, the operation of the rib 9 will be described. As shown in the sectional view of FIG. 3 (B), when warm air in the room flows backward from the side of the main body, as indicated by the arrow, on the rib 9 provided in the vicinity of the dummy blowing portion 2a described above, After the indoor warm air collides with the first rib 9a having the lowest height, the flow is interrupted while colliding with the second rib 9b, the third rib 9c and the fourth rib 9d having different heights in stages, The intrusion to the air outlet 2 is blocked from the dummy air outlet 2a.

  The warm air in the room sequentially collides with the first rib 9a, the second rib 9b, the third rib 9c, and the fourth rib 9d, which have different heights step by step, and the flow is interrupted. As shown by the colored portions, the upper portions of the first rib 9a, the second rib 9b, the third rib 9c, and the fourth rib 9d are at or above the dew point temperature of the air. As a result, the warm air in the room that has flowed backwards hits a portion above the dew point temperature of the air indicated by the shaded portion of each rib, but cannot enter the lower portion below the dew point temperature indicated by the plain of each rib. Therefore, the dew condensation phenomenon that occurs when warm air is cooled can be prevented.

  In addition, the warm air in the room that has flowed in reversely collides with the first rib 9a, the second rib 9b, the third rib 9c, and the fourth rib 9d, which are continuously different in height, and the flow is blocked. It is possible to avoid the collision between the blowout air blown out from the blowout port 2 and the indoor air that has flowed backward, and prevent the occurrence of turbulence and surging phenomenon and condensation in the blown air due to the air collision. Can be done.

DESCRIPTION OF SYMBOLS 1 Intake port 2 Outlet 3 Heat exchanger 3a Front upper part 3b Front lower part 3c Rear upper part 4 Blower fan
5 Front dew pan
6 Rear dew tray 7 Left and right wind direction plate 8 Vertical wind direction plate 9 Rib 9a First rib 9b Second rib 9c Third rib 9d Fourth rib 10 Display unit 10a Receiving unit 11 Guide surface

Claims (1)

In an air conditioner that houses a heat exchanger and a blower fan in a main body having a suction port and a blower outlet, and pivotally supports a vertical wind direction plate at the blower outlet,
An air conditioner characterized in that a plurality of ribs, each having a height increasing in order from the side of the main body toward the center, are provided on the side of the guide surface of the up-and-down wind direction plate.