Fixed-frequency air conditioner and control method of fixed-frequency air conditioner

Abstract

The invention discloses a fixed-frequency air conditioner which comprises an outdoor heat exchanger unit, an indoor heat exchanger unit, a four-way valve, a compressor unit and a throttling unit. The throttling unit comprises a first throttling element, a second throttling element and an electromagnetic valve, the first throttling element is connected between the outdoor heat exchanger unit and the indoor heat exchanger unit, the second throttling element and the electromagnetic valve are connected in series to be connected between the outdoor heat exchanger unit and the indoor heat exchanger unit, and the electromagnetic valve is switched on or off to control whether the second throttling element participates in throttling or not. According to the fixed-frequency air conditioner, due to the fact that the electromagnetic valve is switched on or off to control whether the second throttling element carries out throttling on refrigerants or not, the electromagnetic valve is switched on to control the second throttling element to carry out throttling on the refrigerants when defrosting occurs or the power supply voltage is low, in this way, the defrosting time is shortened when defrosting occurs, or condensation loads are released when the power supply voltage is low, and therefore the comfort of the fixed-frequency air conditioner is improved.

Description

technical field [0001] The invention belongs to the technical field of air conditioners, and in particular relates to a fixed-frequency air conditioner and a control method thereof. Background technique [0002] At present, the fixed-frequency air conditioner has a wide market because of its low price. However, it also has a long defrosting time, or the situation that it cannot be started or frequently trips due to voltage drop during the peak power consumption period in summer. There is a fixed frequency air conditioner with poor comfort. Contents of the invention [0003] The object of the present invention is to provide a fixed-frequency air conditioner and its control method, aiming at improving the comfort of the fixed-frequency air conditioner. [0004] In order to achieve the purpose of the present invention, the present invention provides a fixed-frequency air conditioner, including an outdoor heat exchanger unit, an indoor heat exchanger unit, a four-way valve, a...

AI Technical Summary

Problems solved by technology

[0002] At present, the fixed-frequency air conditioner has a wide market because of its low price. However, it also has a long defrosting time, or the situation that it cannot be started or frequently trips due to voltage drop during the peak power consumption period in summer. Poor comfort with fixed frequency air conditioner

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