Engine-driven air conditioning machine

Abstract

The present invention provides an engine-driven air conditioner saving time and labor required for manufacture and having excellent refrigerant regulating ability. A main electronic expansion valve 209 capable of controlling the amount of refrigerant flowing into an outdoor heat exchanger 204 when heating, is interposed in a part upstream (upstream when heating) of the outdoor heat exchanger 204, of a refrigerant passage 207c. The amount of refrigerant flowing into the outdoor heat exchanger 204 can be freely controlled by the main electronic expansion valve 209, and in the case of a different model, it can be coped with only by changing the opening setting of the electronic expansion valve. Time and labor required for manufacture can thereby be saved. Furthermore, opening once set can be changed and regulated again to flexibly regulate the flow of refrigerant according to each situation.

Description

technical field [0001] The present invention relates to an engine-driven air conditioner. Background technique [0002] A GHP (Gas Heat Pump) is an air conditioner that uses a gas engine for air conditioning. Specifically, the compressor connected to the refrigerant passage is driven by a gas engine to circulate the refrigerant in the refrigerant passage, and the indoor heat exchanger and the outdoor heat exchanger inserted in the refrigerant passage In the cooling system, the refrigerant condenses and evaporates, and the air is conditioned by the movement of heat accompanying this action. [0003] Specifically, during heating, the refrigerant discharged from the compressor passes through the refrigerant passage and sequentially passes through the indoor heat exchanger (condensation), expansion valve (expansion), outdoor heat exchanger (evaporation), and then returns to the compressor, but At this time, the refrigerant condenses in the indoor heat exchanger to generate hea...

AI Technical Summary

Problems solved by technology

Therefore, there is an operation to select the orifice or capillary according to the model, which increases the workload at the time of manufacture.

Also, once the orifice or capillary tube is installed, it is difficult to further adjust the amount of refrigerant flowing through the outdoor heat exchanger side, so there is a problem of lack of refrigerant adjustment capability

In addition, when heating at low temperature when the outside air temperature is extremely low, since the heat exchange efficiency in the outdoor heat exchanger is extremely low, it is desirable that the refrigerant does not flow through the outdoor heat exchanger, but in the existing structure, due to cooling The refrigerant flows to the outdoor heat exchanger through a throttling mechanism such as an orifice, so the refrigerant releases heat in the outdoor heat exchanger instead, resulting in a further decline in heating capacity.

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