JPH0228773B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a window air conditioner that uses a variable capacity compressor controlled by an inverter for indoor cooling or heating.

Conventional configuration and problems thereof Conventionally, in this type of window air conditioner, the refrigerating capacity has been varied by using a bypass method or by changing the number of poles of the compressor.

However, with this method, there is a limit to the variable width and variable range of the refrigerating capacity, so the compressor repeatedly starts and stops in response to the required load capacity, resulting in poor feeling and lining cost.

In addition, window air conditioners must be made smaller because they are installed on windows, but when equipped with a variable capacity compressor controlled by an inverter, the amount of heat generated by the inverter control section is large. The inverter control section burns out due to heat. In addition, one way to prevent such burnout is to cool it, but to do so, it is necessary to increase the space for cooling or provide a dedicated cooling fan. However, it had the disadvantage that it took up a large space and was not suitable as a window air conditioner.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional problems, and aims to cool an inverter control section without enlarging the main body of a window air conditioner.

Structure of the Invention In order to achieve this object, the present invention provides a partition plate that forms an indoor ventilation circuit and an outdoor ventilation circuit in an air conditioner main body, and between this partition plate and the indoor ventilation circuit, An electrical box housing an inverter control device and a variable capacity compressor linked to the inverter control device are provided, an opening passage A communicating between the outdoor side of the air conditioner main body and the electrical box, and ventilation between the electrical box and the outdoor side. Open passages B are provided for communicating the passages.

With this configuration, outdoor air flows into the inverter control section, cools the inverter control section, and radiates heat to the outdoor side through the outdoor ventilation circuit.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.
This will be explained with reference to the diagram.

In the figure, reference numeral 1 denotes an air conditioner main body, in which an inlet 2, an outlet 3, and an operation unit 4 for controlling air conditioning operation are provided on the front surface of the indoor side, and an intake port 5 and an exhaust port 6 are provided on the rear surface of the outdoor side. are provided for each. 7 is a partition plate that partitions the inside of the air conditioner body 1 into an indoor ventilation circuit 8 and an outdoor ventilation circuit 9. The indoor ventilation circuit 8 communicates with the inlet 2 and the outlet 3, and the interior An indoor heat exchanger 10 and an indoor fan motor 11 that constitute a well-known refrigeration cycle are provided, and an indoor fan 12 is connected to the indoor fan motor 11. Further, the front ventilation outside ventilation circuit 9 communicates with the intake port 5 and the exhaust port 6, and includes an outdoor heat exchanger 13 and an outdoor fan motor 14 which together with the indoor heat exchanger 10 constitute a well-known refrigeration cycle. An outdoor fan 15 is connected to the outdoor fan motor 14 . Furthermore, the partition plate 7 and the indoor ventilation circuit 8
An electrical equipment box 16 for inverter control and a variable capacity compressor 17 linked to the inverter control are provided between the lower parts of the electrical equipment box 16, and electrical components 18 for inverter control are housed in the electrical equipment box 16. A is an open passage connecting the outdoor side of the air conditioner main body 1 and the electrical equipment box 16, and B is an open passage connecting the electrical equipment box 16 and the outdoor ventilation circuit 9. Therefore, the outdoor side of the air conditioner main body 1, the electrical equipment box 16, and the outdoor side ventilation circuit 9 are communicated with each other by the open passages A and B, and the open passages A and B are connected to the outdoor side It is located on the negative pressure side of the ventilation circuit 9.

In the above configuration, when air conditioning operation is performed, in the indoor ventilation circuit 8, the indoor fan 12 passes from the suction port 2 through the indoor heat exchanger 10 to the air outlet 3.
In addition, in the outdoor ventilation circuit 9, an outdoor fan 15 forms a wind circuit in which air is blown from the intake port 5 through the outdoor heat exchanger 13 and from the exhaust port 6. The indoor air conditioning is performed by the wind circuit.

Next, cooling of the inverter control section will be explained.

In the above-mentioned air-conditioning state, the outdoor air flows from the open passage A into the electrical equipment box 16 because the open passages A and B are located on the negative pressure side of the outdoor ventilation circuit 9. The outdoor air that has entered the electrical equipment box 16 cools the electrical components 18 for controlling the inverter, passes through the outdoor ventilation circuit 9, and is radiated to the outdoor side.

Therefore, since an appropriate amount of air from outside the room is introduced into the inverter control section, the heat generated by the electrical components of the inverter control section can be radiated to the outdoor side, thereby reducing the temperature rise of the electrical components of the inverter control section. It is preventable.

Effects of the Invention As is clear from the above embodiments, the present invention allows air outside the room to flow into the inverter control section, thereby making it possible to cool the air conditioner without increasing its size. Furthermore, since the air flowing in for cooling is flowing from outside to outside, the heat generated from the electrical components of the inverter control unit during cooling operation does not leak into the room, so the cooling capacity does not decrease.
Furthermore, even if wind from outside hits the air conditioner when the air conditioner is stopped, the wind will not flow into the room, so drafts will not enter.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a window air conditioner showing an embodiment of the present invention, FIG. 2 is a side sectional view of the air conditioner, and FIG. 3 is a plan sectional view of the air conditioner. 1... Air conditioner body, 7... Partition plate, 8...
Indoor ventilation circuit, 9...Outdoor ventilation circuit, 16...
...Electrical box, 17...Variable capacity compressor, 1
8... Electrical components, A... Ventilation circuit, B... Ventilation circuit.

Claims (1)

[Claims] 1 A partition plate forming an indoor ventilation circuit and an outdoor ventilation circuit each equipped with a heat exchanger and a blower fan is provided in the air conditioner main body, and an inverter control An electrical equipment box housing the device and a variable capacity compressor linked with the inverter control device are provided, an open passage A communicating the outdoor side of the air conditioner main body with the electrical equipment box, and a connection between the electrical equipment box and the outdoor ventilation circuit. A window air conditioner equipped with an open passage B that communicates with the negative pressure side.