JPH0387533A - Indoor unit device of air conditioner - Google Patents

Abstract

PURPOSE:To facilitate an installing of an air conditioner and further to enable an effective ventilation function to be attained while keeping an air conditioning function and its air conditioning configuration by a method wherein an upstream side of an air blowing passage of a cabinet is provided with a ventilation hole, its opening or closing door and an extendable or retractable ventilation duct extended outwardly and its wall surface fixing plate is provided with a ventilation hole having a slight large opening area. CONSTITUTION:Indoor air entered through a suction port 1a is blown out of a blowing port 1b from a heat exchanger 4 through a fan 2. A rear surface of a cabinet 1 at an upstream side of a fan 2 is provided with a ventilation hole 1d and a part of its corresponding fixing plate 4 is also provided with a ventilation hole 4b. An opening or closing door 7 is an one- sided opening door through a rotating shaft 1d' at an upper edge of the ventilation hole 1d and under an opened condition, the door may shut off an air blowing passage from an indoor side and take surrounding air from the ventilation hole 1d. Its opening or closing operation is controlled by a separate remote controller. The ventilation hole 4b of the fixing plate 4 is larger than an opening area of the ventilation hole 1d of the cabinet 1. The ventilation duct 8 is also extendable or retractable between the fixing plate 4 and the outlet of the wall 5 and the ventilation duct can be easily fixed. In addition, the other end of the ventilation duct 7 is covered with an insect-proof net 9 in such a way as it may be removably attached.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to an improvement of an indoor unit device for an air conditioner equipped with a fan and a heat exchanger.

(Prior art) Among conventional air conditioners, for example, split type air conditioners, which are often used in general households, are divided into wall-mounted indoor units and stationary outdoor units. , a cross-flow fan driven by the rotational force of a motor, and a heat exchanger that receives air from the fan.

Since the indoor unit device performs air conditioning such as heating and cooling while circulating indoor air, it is not originally provided with a ventilation device or the like to take in outside air. To ventilate dirty indoor air, it is necessary to open windows, etc. each time.

However, recently, as air conditioners have become more multi-functional, there has been a demand for the addition of a ventilation function.

Originally, air conditioning is supposed to be operated in a closed room, so even if it is simply adding a ventilation function, there have been no concrete proposals to date on how to achieve this. There wasn't.

A commonly considered method is to install a duct that connects to the air blowing path of the indoor fan in the indoor unit, allowing fresh air to be taken in from outside the room or building.

However, inside the indoor unit equipment side, in addition to the heat exchanger and fan, there are also piping for connection to the heat exchanger, a storage area for the drain hose, etc., and it is already optimally designed for conventional air conditioning equipment. The challenge was how to add an effective ventilation function while maintaining the original function and structure without impairing it.

(Problem to be solved by the invention) Conventional split type air conditioners do not have a ventilation function,
Furthermore, even though an effective ventilation function could be added, no specific configuration could be found that would achieve this without compromising the original air conditioning function.

SUMMARY OF THE INVENTION An object of the present invention is to provide an indoor unit device for an air conditioner that is easy to install and provides an effective ventilation function while maintaining the conventional air conditioning function and configuration.

[Structure of the Invention] (Means for Solving the Problems) The first invention provides an indoor air conditioner in which a fan driven by a motor and a heat exchanger receiving air from the fan are housed in a cabinet. In the unit device,
A ventilation hole is provided in a portion of the cabinet located upstream of the air passage formed by the fan, and an opening/closing door for opening and closing the ventilation hole is provided.

In a second invention, in the first invention, the mount to be attached to the wall includes a plate, and the mount has an opening larger than the ventilation hole in the plate at a position corresponding to the ventilation hole of the cabinet. The installation with area is characterized by the provision of ventilation holes in the plate.

A third invention is an indoor unit device for an air conditioner, in which a fan driven by a motor and a heat exchanger receiving air from the fan are housed in a cabinet.
A ventilation hole is provided in a part of the cabinet facing the air passage formed by the fan, and a retractable ventilation duct is connected to the ventilation hole and extends outward.

(Function) The indoor unit device of an air conditioner uses a fan casing etc. to form a space as an air circulation path so that indoor air is efficiently supplied to the heat exchanger when the fan operates during air conditioning. However, on the other hand, it is also required to downsize the entire unit, so the internal space structure of the cabinet has been optimally designed to be compact.

The downstream side of the air passage formed by the fan is occupied by storage space for refrigeration cycle piping and drain hoses, so even if ventilation holes are provided in the cabinet, the necessary opening area cannot be obtained. It is difficult to do so. Furthermore, even if a ventilation hole is provided facing the downstream side of the air duct, it is difficult and necessary to bring in outside air using only the static pressure of the air conditioning fan, unless a dedicated ventilation fan is installed separately. A sufficient amount of ventilation cannot be expected.

Therefore, in the first invention, a ventilation hole is provided in a portion of the cabinet located upstream of the fan, and an opening/closing door is provided in this ventilation hole. When this door is closed, it does not block the airflow path during normal air conditioning, ensuring the conventional air conditioning function, and when the door opens during ventilation, the air intake path from the room is narrowed. Conversely, since the air intake passage from the outside air is opened, ventilation by the fan is performed efficiently.

In addition, in the case of an indoor unit, a separate plate is used for mounting the cabinet on the wall of the room, but in the second invention, the mounting corresponding to the ventilation holes of the cabinet is made in advance by attaching the cabinet to the part of the board that corresponds to the ventilation hole of the cabinet. The mounting plate is provided with ventilation holes that have a larger opening area than the ventilation holes.

During installation work, the installation often experiences misalignment between parts, but with this invention, the necessary ventilation opening area is secured by enlarging the ventilation holes on the plate side, which prevents misalignment etc. This prevents the reduction in opening area and the resulting reduction in ventilation efficiency, and at the same time makes manufacturing and installation easier.

Further, in the third invention, the duct that connects from the ventilation hole of the cabinet to the outside of the room, etc. is made expandable and retractable, so that it can be inserted through the ventilation hole of the cabinet, the ventilation hole of the mounting plate, and the wall of the room. Even if there is a slight misalignment between the duct and the ventilation hole, it can be easily installed by taking advantage of the curvature of the duct, and the installation work can be carried out efficiently.

(Example) Hereinafter, an example of an indoor unit device for an air conditioner according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is a partially cutaway exploded side view showing an embodiment of the device of the present invention.

That is, in FIG. 1, for example, a cross-flow fan 2 and a heat exchanger 3 are housed in a box-shaped cabinet L.

By operating the fan 2, air from the suction port 1a circulates as shown by arrow Y, and is blown out from the air outlet tb via the fan 2 through the heat exchanger 4. In addition, cabinet i
It is fixed to the wall 5 of the room with screws while being locked with the plate 4 by the locking portions lc and 4a.

Therefore, in the rear part of the cabinet l located upstream of the fan 2, there is a ventilation hole 1d of the cabinet having a rectangular cross section.
A ventilation hole 4b having a rectangular cross section is similarly provided in a portion of the mounting plate 4 corresponding to the ventilation hole 1d.

An opening/closing door 7 driven by a ventilation door motor 6 is installed along the inside of the ventilation door hole 1d of the cabinet I so that it can be opened and closed as needed.

The opening/closing door 7 is a single-swinging door with a rotating shaft 1d' along the upper edge of the ventilation hole 1d of the cabinet 1, and when the opening/closing door 7 is open, it blocks the ventilation path from the room during air conditioning. At the same time, with the addition of the static pressure operation of the fan 2, the ventilation hole 1d
It operates to draw in outside air from the

Of course, the opening/closing operation of the opening/closing door 7 is controlled in the same way as other air conditioning controls by a control signal from a separate remote controller.

As shown in FIG. 2, the ventilation hole 4b of the plate 4 has an opening area larger than the ventilation hole 1d of the cabinet 1 in both the vertical and horizontal directions, or at least in either direction. Even if there is some misalignment between the two, the ventilation hole 1d in the cabinet l will be the same as the ventilation hole 4b in the plate.
This prevents the ventilation holes from narrowing and reducing ventilation efficiency, and also ensures ease of manufacturing and installation.

The ventilation duct 8 has a flange structure 8a at its end on the cabinet side, and is screwed to the ventilation hole 1d after alignment, and the other end is attached to the ventilation hole 4 of the plate 4.
b and the ventilation hole 5a of the wall 5 of the room so as to protrude to the outside.

The ventilation duct 8 is installed from the position of the plate 4 to the outlet of the wall 5, forming a bellows-shaped telescopic part 8b, so that there is some deviation in the mutual position between the ventilation holes (Id, 4b, 5a). Even if there is, it can be easily installed because it is curved along it.

In addition, the other end of the ventilation duct 7 is as shown in FIG.
By removably covering the insect repellent net 9, it is possible to prevent insects from outside from entering the indoor unit device or the room through the duct 8.

In the above embodiment, the cross-sectional shape of the ventilation hole is rectangular, but the cross-sectional shape is not limited to this, and any shape such as a circular shape can be adopted. Furthermore, although the outside of the ventilation duct 8 extends straight, the opening surface may be directed downward to prevent rainwater from entering.

Furthermore, although the flange 8a of the duct 8 is fixed to the main cabinet l side, depending on the case, it may be fixed to the plate 4 and an extension section may be provided from the flange part 8a to the cabinet l, or a separate adapter may be installed to prevent ventilation leaks. It can also be configured to prevent

As described above, the indoor unit of the air conditioner according to the present invention has a ventilation function that was not previously available, has a simple configuration, and can be configured without any damage to the conventional air conditioning mechanism, and is efficient. ventilation operations can be performed.

[Effects of the Invention] The indoor unit device for an air conditioner of the present invention has a simple configuration and can achieve efficient ventilation, and is particularly effective when applied to home air conditioners. .

[Brief explanation of drawings]

Fig. 1 is a partially cutaway exploded side view showing an embodiment of an indoor unit device for an air conditioner according to the present invention, and Fig. 2 shows ventilation holes in the cabinet and mounting plate of the device shown in Fig. 1. A partial perspective view for explaining the relationship, FIG. 3 is a right side view taken along line A--A of the apparatus shown in FIG. 1... Cabinet, 1d... Ventilation hole of cabinet, 2... Fan, 3... Heat exchanger, 4...
・Mounted on the board, 4b...Mounted on the ventilation hole in the board, 5
...Wall, 7.Opening/closing door, 8.Duct, 8b.Extensible part, 9.Net.

Claims (3)

[Claims] (1) In an indoor unit device of an air conditioner in which a fan driven by a motor and a heat exchanger receiving air from the fan are housed in a cabinet, the air passage formed by the fan in the cabinet is An indoor unit device for an air conditioner, characterized in that a ventilation hole is provided in an upstream portion, and an opening/closing door for opening and closing the ventilation hole is provided. (2) A mounting plate that is attached to a wall surface is provided, and a ventilation hole of the mounting plate having a larger opening area than the ventilation hole is provided in the mounting plate at a position corresponding to the ventilation hole of the cabinet. The indoor unit device for an air conditioner according to claim (1), characterized in that: (3) In an indoor unit device for an air conditioner in which a fan driven by a motor and a heat exchanger receiving air from the fan are housed in a cabinet, the air passage formed by the fan in the cabinet is An indoor unit device for an air conditioner, characterized in that a ventilation hole is provided in a facing part, and a retractable ventilation duct is connected to the ventilation hole and extends outward.