JPS5864Y2 - air conditioner - Google Patents

Description

[Detailed description of the invention] This invention consists of an outdoor unit with an outdoor heat exchanger and an outdoor fan, and an indoor unit with an indoor heat exchanger and an indoor fan. , outdoor air is taken into the outdoor unit, heat exchanged with the outdoor heat exchanger, and then discharged to the outside, while indoor air is taken into the indoor unit, heat exchanged with the indoor heat exchanger, and cold air or air is sent indoors. A damper for an air conditioner that blows warm air, which converts the air flow path so that the indoor air is discharged outdoors by the outdoor blower, and the outdoor air is taken into the room by the indoor blower for ventilation. This is related to the improvement of.

Conventionally, as shown in FIG.
An air flow path 20 that communicates with the suction port 19 of the indoor unit 18 is formed between the outdoor unit 16 and the indoor unit 18, and a damper 21 is provided in the air flow path 20 at a fulcrum 22 so as to be freely switchable for cooling or heating. Sometimes the damper 21
is installed at the position shown by the solid line, and the outdoor air is supplied to the outdoor unit 16.
In addition, indoor air was sent to each indoor unit 18 for heat exchange.

When ventilation is to be carried out, the damper 21 is switched as shown by the dashed line, and the outdoor air is taken into the indoor unit 18 and the indoor air is taken into the outdoor unit 16 for ventilation.

And outdoor unit 1 to increase the capacity of the air conditioner.
6, the capacity of the outdoor heat exchanger 23 and the capacity of the outdoor blower 24 are larger than the capacities of the indoor heat exchanger 25 and the indoor blower 26, which are built into the indoor unit 18. In a room, the amount of indoor air exhausted outside is large compared to the amount of indoor air taken into the room, so the balance between intake and exhaust is disrupted, and the pressure inside the room changes. Opening and closing doors may become difficult due to the pressure difference between the room and the hallway, or when the door is opened, air from the hallway may enter the room due to the difference in air pressure between the room and the hallway, causing documents on the desk and other objects to scatter. There were some problems.

This invention eliminates the imbalance between the ventilation amount of indoor air and the intake amount of outdoor air by forming a vent in the damper that switches the air flow path to cooling/heating or ventilation. The outdoor unit that ventilates indoor air takes in outdoor air through the vent of the damper, adjusts the amount of indoor air ventilation, and creates a negative pressure in the room so that the door installed at the entrance to the room cannot be opened or closed indoors. This solves the problem of documents becoming heavy due to the difference in pressure between the inside and outside, or when the door is opened, outside air from the hallway etc. flows into the room and scatters documents on the desk. This prevents the inside of the room from being seen through the ventilation holes of the damper, and reduces the noise from outside entering the room through the ventilation holes.

An embodiment of the present invention will be described below based on the drawings.

Reference numeral 1 denotes an outdoor unit, which forms an inlet 2 and an outdoor exhaust port 3, and has an outdoor heat exchanger 4 and an outdoor blower 5 incorporated therein.

Reference numeral 6 denotes an indoor unit, which forms a suction lower and an indoor discharge port 8, and has an indoor heat exchanger 9 and an indoor blower 10 incorporated therein.

11 are the suction ports 2 and 3 of the outdoor unit 1 and the indoor unit 6
The outdoor and indoor areas are communicated through an air flow path formed between the outdoor unit 1 and the indoor unit 6 so as to communicate with each other.

Reference numeral 12 denotes a damper formed on both sides with the support shaft 13 in the center, and a large number of vent holes 14 are formed in the damper piece 12a facing the outside of the room from the support shaft 13, as shown in FIG.

15 is a shielding plate cut out to form the ventilation hole 14;
A damper 12 is rotatably provided in the air flow path 11 via a support shaft 13 such that the tip of the shielding plate 15 faces the outdoor unit 1 side.

The shielding plate 15 is formed so that the inside of the room cannot be seen through the vent 14 from the outside even when the damper 12 is switched to either side for cooling/heating or ventilation.

Since the damper 12 is constructed as shown above, when the air conditioner is used for cooling or heating, the damper 12 is set as shown in FIG.

In this state, outdoor air is sucked into the suction port 2 of the outdoor unit 1 through the air passage 11, passed through the outdoor heat exchanger 4 by the outdoor blower 5, and is discharged outdoors from the outdoor exhaust port 3. On the other hand, the indoor air Cold or warm air is sucked into the suction lower of the indoor unit 6 through the air passage 11, and is blown into the room by the indoor blower 10 through the indoor heat exchanger 9 and from the indoor discharge port 8, thereby performing cooling or heating. .

At this time, almost no outdoor air is taken in through the vent 14 formed in the damper 12, and the outdoor air is taken into the outdoor fan 5 of the outdoor unit 1, which has a large capacity.

Next, when ventilation is to be performed, the damper 12 is switched as shown in FIG.

In this state, outdoor air is drawn into the suction lower of the indoor unit 6 through the air flow path 11 and discharged indoors via the indoor outlet 8 by the indoor blower 10, while indoor air is drawn into the indoor unit 1 through the air flow path 11. Air is sucked into the suction port 2 and discharged outdoors via the outdoor exhaust port 3 by the outdoor blower 5, allowing air to be taken in and exhausted at the same time.

Also, in this state, since the capacity of the outdoor fan 5 is larger than that of the indoor fan 10, the amount of indoor air discharged increases, and when the inside of the room becomes in a negative pressure state, outdoor air is pumped through the vent formed in the damper 12. 14 into the outdoor air blower 5, and the outdoor air blower 5 simultaneously takes in indoor air and outdoor air to adjust the ventilation amount of the indoor air and balance the outdoor air with the intake air amount taken indoors. be.

According to the present invention, the damper is provided with a vent and a shielding plate, so when indoor air is ventilated by the outdoor unit and outdoor air is taken into the room by the indoor unit, the ventilation amount of the indoor air is equal to the intake of outdoor air. When the indoor pressure reaches a negative pressure state, the outdoor air is taken into the outdoor unit through the damper's vent, and the outdoor unit uses the indoor air and outdoor air to fully operate the outdoor unit and provide ventilation. The amount of intake air is balanced and the pressure change inside the room is reduced, eliminating the pressure difference between the room and outside rooms such as corridors.
Doors installed at the entrances and exits of rooms will be sucked into the room, eliminating the burden of opening and closing the door, and when the door is opened, suction will be sucked into the room from the hallway, etc., and documents on the desk will be scattered by the suction airflow. This problem is also solved, and since a shielding plate is provided on the side of the air vent formed in the damper, this shielding plate prevents the inside of the room from being seen through the vent from outside the room. In addition to providing a crime prevention effect, the noise from outside the room collides with the shielding plate and is alleviated, thereby providing a great practical effect of preventing the noise from directly entering the room through the vents.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing the cooling/heating operation state of an air conditioner according to an embodiment of the present invention, Fig. 2 is an explanatory diagram showing the state during ventilation, Fig. 3 is a perspective view of the damper, and Fig. 4 is a conventional diagram. FIG. 2 is an explanatory diagram of an air conditioner. 1...Outdoor unit, 2...Suction port,
6...Indoor unit, 7...Suction port,
12... Damper, 12 a... Damper piece, 13... Support shaft, 14... Ventilation port, 15... Shielding plate.

Claims (1)

[Scope of utility model registration request] The suction ports of the outdoor unit and the indoor unit face each other and communicate with each other, the outdoor discharge port of the outdoor unit opens to the outside of the room, and the indoor discharge port of the indoor unit opens into the room. A damper that is installed between the outdoor unit and the indoor unit in parallel between the unit and the indoor unit, and uses the center of the air flow path as a fulcrum to selectively switch the communication state between the intake port and the air flow path during cooling/heating and ventilation. In an air conditioner equipped with a damper, a vent is provided in the damper piece located on the outdoor side of the damper, and a shielding plate is formed so that the vent cannot be seen through from the outdoor side, so that during ventilation, a part of the outdoor air is An air conditioner in which indoor air is guided to an outdoor unit through a vent, and indoor air is exhausted, and most of the outdoor air is guided to an indoor unit and then taken into the room.