JPH0311622Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an indoor unit of a wall-mounted air conditioner, and particularly relates to the structure of a suction grill attached to the suction port thereof.

(Prior art) As disclosed in Japanese Utility Model Application Publication No. 54-29951, as an indoor unit of a wall-mounted air conditioner, a suction port is conventionally provided at the center of the front surface of the casing, and the suction port is located at the lower front surface of the casing. Air outlets that blow out air almost horizontally are opened close to each other in the vertical direction, and
Inside the casing, a heat exchanger is disposed in a substantially upright position facing the above-mentioned suction port, and a fan is disposed behind the heat exchanger, and the fan draws in air from the suction port. It is known that after exchanging heat with a heat exchanger, the air is blown out from an outlet to cool and heat the room.

The suction port and the blowout port are vertically close to each other on the front surface of the casing, and the suction flow and the blowout flow are parallel to each other in a substantially horizontal direction.
A so-called short circuit is likely to occur in which a part of the blowout flow blown out from the blowout port is immediately sucked into the suction port due to the attraction of the suction flow to the suction port. For this reason, the lower part of the suction grill attached to the suction port is made blind to prevent the short circuit as much as possible. Incidentally, the above-mentioned publication describes a suction grille provided with a plurality of horizontal ribs extending in the horizontal direction and parallel to each other.

(Problem to be solved by the invention) However, in the above-mentioned conventional system, when the lower part of the suction grill is blinded as a measure to prevent short circuits, the height of this blind part is required to ensure a constant amount of intake air. There is a natural limit to the width of the circuit, and as a result, it has been disliked that short circuits cannot be sufficiently prevented.

Therefore, the present invention has been made in view of this point, and aims to effectively prevent the above-mentioned short circuit by making good use of the horizontal ribs of the suction grill as described in the above-mentioned publication and appropriately setting its shape. The main purpose is

Furthermore, another object of the present invention is to improve the appearance and design by concealing the internal structure inside the suction port by the shape of the horizontal ribs of the suction grill.

(Means for Solving the Problem) In order to achieve the above object, the solution of the present invention is as shown in FIG. The present invention is directed to an indoor unit of an air conditioner in which outlet ports 3 for blowing out air in a substantially horizontal direction are opened vertically close to the air conditioner 2, and a suction grill 12 is attached to the inlet port 2. The suction grille 12 is provided with a plurality of horizontal ribs 16 extending laterally and parallel to each other, each of the horizontal ribs 16 is inclined forward and upward, and the front end of each horizontal rib 16 stands upwardly. The structure is such that a rising portion 16b is formed.

(Function) With the above configuration, in the present invention, the suction grill 1
Since the horizontal ribs 16 of 2 are tilted forward and upward, the suction flow sucked into the suction port 2 flows obliquely downward from the front, and has an attractive effect on the blowout flow blown out in a substantially horizontal direction. It almost never occurs. Therefore, even if the suction port 2 and the blowout port 3 are vertically close to each other on the front surface of the casing 1, the blowout flow is not induced by the suction flow and flows almost horizontally, and short circuits are effectively prevented. That will happen. Moreover, since the rising portion 16b that rises upward is formed at the front end of the horizontal rib 16, the inflow of the blowout flow into the suction port 2 is controlled by the rising portion 16b without significantly reducing the opening area of the suction grille 12. Suppressed and prevented by the portion 16b,
Short circuits can be more effectively prevented.

Furthermore, when the indoor unit is installed on a wall surface, etc., the internal structure (heat exchanger, etc.) inside the suction port 2 can be accessed from the front by the horizontal rib 16 that slopes upward toward the front and the rising portion 16b at its front end. It becomes invisible and looks good in terms of appearance and design.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

FIG. 1 shows an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention, in which 1 is a casing, and a suction port 2 is provided at the center of the front surface of the casing 1.
An air outlet 3 is opened at the lower front of the casing 1 and is vertically close to the air inlet 2 and blows out air in a substantially horizontal direction. Inside the casing 1, a heat exchanger 4 is disposed in a substantially upright state facing the suction port 2, and a fan 5 is disposed behind the heat exchanger 4. After the air sucked in from 2 is heat exchanged by a heat exchanger 4, it is blown into the room from an outlet 3 to cool and heat the room. Note that 6 is an air filter provided at the front of the heat exchanger 4, and 7 is a drain pan provided at the bottom of the heat exchanger 4. Further, 8 and 9 are horizontal blades and vertical blades provided at the air outlet 3, respectively; 10 is an auxiliary air outlet for downward blowing provided on the lower surface of the casing 1; and 11 is a damper for opening and closing the auxiliary air outlet 10. It is a member.

Furthermore, a suction grill 12 is attached to the suction port 2. As shown in FIG. 2, the suction grill 12 has a rectangular frame 1 with open front and rear surfaces.
3, and a blind plate portion 1 that closes the front lower part of the frame body 13.
4, and a plurality of horizontal ribs 16, 16, .
and vertical ribs 17 vertically connecting the horizontal ribs 15, 15, . . . at appropriate intervals. and,
As shown in enlarged detail in FIG. 3, each of the horizontal ribs 16 is composed of a plate body 16a that slopes forward and upward, and a rising portion 16b that rises slightly upward is formed at the front end of the plate body 16a. .

Therefore, in the above embodiment, the suction flow sucked into the suction port 2 via the suction grille 12 is
Since each horizontal rib 16 of the suction grille 12 is inclined forward and upward, the flow flows diagonally downward from the front as shown by the arrow in FIG. As a result, there is almost no attraction to the blowout flow blown out in a substantially horizontal direction. air conditioner is not sucked into the suction port 2, short circuit can be effectively prevented, and the air conditioning effect can be improved and the operating range can be expanded.

Moreover, since a rising portion 16b rising upward is formed at the front end of the horizontal rib 16 (plate body 16a), the opening area of the suction grille 12, that is, the suction flow rate is not significantly reduced, and the blowout flow is increased. The rising portion 16b further suppresses and prevents the inflow into the suction port 2, thereby making it possible to more effectively prevent short circuits.

Furthermore, since a blind plate portion 14 is provided at the lower front of the suction grille 12, the communication distance between the suction port 2 and the blowout port 3 is separated as much as possible, and this is combined with the action of the horizontal rib 16 that slopes forward upward. Therefore, the short circuit can be prevented even more reliably. In addition, each horizontal rib 16 in the suction grill 12 is inclined forward and upward, so that
When the indoor unit is installed on a wall, etc., the internal structure (heat exchanger 4, etc.) inside the suction port 2 is blocked by the horizontal ribs 16 and difficult to see from the front through the suction grill 12. , the appearance and design are excellent, and the appearance can be improved. Particularly, since the rising portion 16b is provided at the front end of the horizontal rib 16, the internal structure becomes almost invisible, which is advantageous.

It should be noted that the present invention is applicable not only to the above-mentioned wall-mounted indoor unit of the air conditioner, but also to a ceiling-suspended type.

(Effects of the Invention) As explained above, according to the present invention, in an indoor unit of an air conditioner, which has an inlet in the central part of the front surface of the casing and an outlet in the lower part of the front surface vertically close to the inlet, Each of the horizontal ribs of the suction grille is inclined forward and upward so that the suction flow is directed diagonally downward so that no attraction to the outlet flow occurs, and a rising portion is provided at the front end of each horizontal rib,
Since the inflow of the outlet flow into the suction port is suppressed and blocked, even if the inlet and outlet are vertically close to each other on the front surface of the casing, part of the outlet flow will not be sucked into the inlet. , short circuit can be effectively prevented.

Furthermore, each of the horizontal ribs is inclined upward in the front direction and has a rising portion at its front end, so when the indoor unit is installed on a wall, etc., the horizontal ribs and the rising portion allow the interior to be seen from the front. The appearance and design can be improved by making the structure (heat exchanger, etc.) invisible.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a vertical sectional side view of an indoor unit, FIG. 2 is a partial perspective view of the suction grille, and FIG. 3 is an enlarged sectional view of the horizontal ribs of the suction grille. 1...Casing, 2...Suction port, 3...Blowout port, 12...Suction grill, 16...Horizontal rib, 16
b...Rising part.

Claims (1)

[Scope of utility model registration request] A suction port 2 is opened at the center of the front surface of the casing 1, and an air outlet 3 that is vertically close to the suction port 2 and blows out air in a substantially horizontal direction is opened at the bottom of the front surface. In the indoor unit of the air conditioner equipped with the air conditioner, the suction grille 12 is provided with a plurality of horizontal ribs 16 extending laterally and parallel to each other, each of the horizontal ribs 16 being inclined forward and upward, and An indoor unit for an air conditioner characterized in that a rising portion 16b rising upward is formed at the front end of each horizontal rib 16.