Air conditioner

Abstract

The invention discloses an air conditioner. A heat exchanger arranged in the air conditioner comprises a distributor, and the distributor is used for evenly distributing gas-liquid two-phase refrigerating fluid into multiple flat pipes. A mixing cavity, a backflow cavity and multiple flow dividing sections are formed in the distributor, and the gas-liquid two-phase refrigerating fluid input from arefrigerating pipeline flows in the mixing cavity. The backflow cavity communicates with the mixing cavity, and part of the refrigerating fluid in the mixing cavity can flow back into the mixing cavity through the backflow cavity. The multiple flow dividing sections communicate with the multiple flat pipes in a one-to-one correspondence manner, and inlets of the multiple flow dividing sections communicating with the multiple flat pipes arranged below communicate with the mixing cavity, and inlets of the multiple flow dividing sections communicating with the multiple flat pipes arranged abovecommunicate with the backflow cavity. According to the distributor, even mixing of the gas-liquid two-phase refrigerating fluid can be achieved, the uniformity of the refrigerating fluid in differentflat pipes is improved, and the heat exchange effect of the heat exchanger and the air conditioner is improved.

Description

technical field [0001] The invention relates to the technical field of refrigeration equipment, in particular to an air conditioner with uniform refrigerant distribution. Background technique [0002] At present, the heat pump type air conditioner is a kind of heating and cooling air conditioner that is often used. When cooling in summer, the air conditioner cools indoors and dissipates heat outdoors; while heating in winter, the direction is opposite to that in summer, that is, heating indoors and cooling outdoors. The air conditioner exchanges heat and cold between different environments through a heat pump. For example, in winter, outdoor air, surface water, groundwater, etc. are low-temperature heat sources, while indoor air is a high-temperature heat source. The function of heat pump air conditioning is to transfer heat from the outdoor environment to the indoor environment. [0003] refer to figure 1 As shown, a schematic diagram of a heating cycle of a heat pump in...

AI Technical Summary

Problems solved by technology

When the microchannel heat exchanger is used as an evaporator, when the gas-liquid two-phase refrigerant enters multiple flat tubes from the inner cavity of the distributor, due to the difference in the density and viscosity of the gas phase and the liquid phase, the flowing refrigerant is easily separated by gravity and Separation occurs due to viscous forces, resulting in uneven refrigerant flow into multiple flat tubes

Especially for insert-type micro-channel heat exchangers, the distributor is designed to be installed in a vertical or vertically inclined direction, which increases the difficulty of shunting

Uneven refrigerant not only deteriorates the heat transfer efficiency, but also causes fluctuations in the refrigeration system

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