Air conditioner and air supply control method used for air conditioner

Abstract

The invention discloses an air conditioner and an air supply control method used for the air conditioner. The air conditioner comprises a compressor, a four-way valve, an indoor heat exchanger, an outdoor heat exchanger, a liquid accumulator, a first throttling element, a second throttling element and a third throttling element, wherein the compressor is provided with a suction end, a discharge end and an air supply end; a first end of the indoor heat exchanger is connected with a third interface of the four-way valve; a first end of the outdoor heat exchanger is connected with a fourth interface of the four-way valve; the liquid accumulator is connected with a second end of the outdoor heat exchanger by a first liquid pipe, is connected with a second end of the indoor heat exchanger by a second liquid pipe, and is connected with an air supply end of the compressor by an air pipe; the first throttling element is arranged on the first liquid pipe; the second throttling element is arranged on the second liquid pipe; the third throttling element is connected between a first node and the air supply end of the compressor. The problem that the normal operation of the air conditioner in a low temperature environment cannot be ensured by a single air supply loop in the prior art is solved, the operation effect of the air conditioner is thus ensured, and the stability and the reliability of the operation of a unit are improved.

Description

technical field [0001] The invention relates to the field of air conditioners, in particular to an air conditioner and an air supply control method applied to the air conditioner. Background technique [0002] Existing air conditioners have a large attenuation of heating capacity when the temperature is relatively low in cold winter, insufficient heating, or even fail to operate normally; It cannot operate normally, which makes it difficult for the air conditioner to meet the needs of ultra-low temperature heating or ultra-high temperature cooling. At the same time, the system energy efficiency of the air conditioner will also be limited by the suction volume of the compressor. Therefore, in recent years, many enterprises and scholars have adopted the quasi-two-stage compression cycle (gas supplementation and enthalpy increase cycle) to solve the shortcomings of conventional air conditioners at ultra-low temperature or ultra-high temperature; the patent application number is...

AI Technical Summary

Problems solved by technology

[0011] The main purpose of the present invention is to provide an air conditioner and an air supply control method applied to the air conditioner to solve the problem in the prior art that the air conditioner cannot operate normally in a low temperature environment

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