Air conditioning unit with defrosting branches

Abstract

The invention belongs to the technical field of air conditioners, and specifically provides an air conditioning unit with defrosting branches, and aims to solve the problem that a defrosting way of anexisting air conditioning unit is not good. The air conditioning unit comprises a main circulating loop as well as an indoor coiled tube, a four-way valve, a compressor and a first outdoor coiled tube and a second outdoor coiled tube, which are arranged on the main circulating loop, wherein the first outdoor coiled tube and the second outdoor coiled tube are arranged in parallel; the first end ofthe first defrosting branch is connected to the second end of the second outdoor coiled tube; the second end of the first defrosting branch is connected between the four-way valve and the compressor,so that a high-temperature refrigerant in the compressor can directly enter the first outdoor coiled tube through the first defrosting branch; the first end of the second defrosting branch is connected to the second end of the second outdoor coiled tube, and the second end of the second defrosting branch is connected between the four-way valve and the compressor, so that the high-temperature refrigerant in the compressor directly enters the second outdoor coiled tube through the second defrosting branch. The air conditioning unit can realize alternated defrosting through multiple groups of outdoor units.

Description

technical field [0001] The invention belongs to the technical field of air conditioning, and specifically provides an air conditioning unit with a defrosting branch. Background technique [0002] With the continuous improvement of people's living standards, people have also put forward higher and higher requirements for the living environment. In order to maintain a comfortable ambient temperature, air-conditioning units have become an essential device in people's lives. Generally, an air conditioning unit includes an indoor unit, an outdoor unit, and a circulation loop for connecting the indoor unit and the outdoor unit. The refrigerant in the air conditioning unit continuously exchanges heat between the outdoor unit and the indoor unit through the circulation loop, thereby achieving the effect of changing the room temperature. . Take the heating operation of the air conditioner unit as an example, the coil of the outdoor unit is always in a low temperature state; at this...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned problems in the prior art, that is, in order to solve the problem of poor defrosting methods of the existing air-conditioning units, the present invention provides an air-conditioning unit with a defrosting branch, the air-conditioning unit includes a main circulation loop and a set The indoor coil, the four-way valve, the compressor and the first outdoor coil and the second outdoor coil arranged in parallel on the main circulation circuit, the first end of the first outdoor coil and the second The first end of the outdoor coil is connected to the indoor coil through a first parallel branch and a second parallel branch, and the second end of the first outdoor coil is connected to the second end of the second outdoor coil. The terminals are respectively connected to the four-way valve through the third parallel branch and the fourth parallel branch. The defrosting branch includes the first defrosting branch and the second defrosting branch. The first defrosting branch The first end of the branch circuit is connected to the second end of the first outdoor coil, and the second end of the first defrosting branch circuit is connected between the four-way valve and the compressor, so that the The high-temperature refrigerant in the compressor can directly enter the first outdoor coil through the first defrosting branch to defrost the first outdoor coil, and then enter the first outdoor coil through the second outdoor coil. In the four-way valve; the first end of the second defrosting branch is connected to the second end of the second outdoor coil, and the second end of the second defrosting branch is connected to the four-way Between the valve and the compressor, so that the high-temperature refrigerant in the compressor can directly enter the second outdoor coil through the second defrosting branch to defrost the second outdoor coil. Frost treatment enters the four-way valve through the first outdoor coil

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