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Refrigeration operating method of multi-split air conditioner in high temperature environment

A technology of high temperature environment and operation method, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of increasing compressor output power, poor multi-line refrigeration effect, and increasing system pressure, reducing operating load, reducing The output power and the effect of reducing the high pressure of the system

Active Publication Date: 2015-01-07
NINGBO AUX ELECTRIC
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  • Claims
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Problems solved by technology

Because as the ambient temperature rises, the heat exchange effect of the outdoor unit decreases, and the lack of liquefaction of the refrigerant causes the system pressure to rise. The outdoor fan runs at full load, the output power of the compressor increases, the power consumption increases, and the energy efficiency is very low.
Therefore, in high-temperature climate areas such as the Middle East, the cooling effect of multi-split units is poor

Method used

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  • Refrigeration operating method of multi-split air conditioner in high temperature environment

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0018] Such as figure 1 As shown, the cooling operation method of the multi-line unit in a high temperature environment according to the present invention, the specific steps are as follows.

[0019] a. Use a refrigerant air pipe 2 with a bypass solenoid valve 1 to connect the second valve port of the four-way reversing valve 3 with the inlet of a water-flowing shell-and-tube heat exchanger 4, and use a refrigerant liquid pipe 5 to connect the The outlet of the shell-and-tube heat exchanger 4 communicates with the outlet of the outdoor heat exchanger 6 .

[0020] The shell-and-tube heat exchanger 4 is located in a water tank 9, and the water tank 9 is provided with a water inlet pipe 12. The water in the water tank 9 is heated and evaporated, and the water is supplied by the water inlet pipe 12.

[0021] A conventional first refrigerant pipe ...

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Abstract

The invention discloses a refrigeration operating method of a multi-split air conditioner in high temperature environment. The refrigeration operating method includes the following specific steps: a, a refrigerant air pipe (2) with a bypass solenoid valve (1) is used to communicate a second valve port of a four-way reversing valve (3) and an input of a water flowing shell-and-coil heat exchanger (4), and a refrigerant liquid pipe (5) is used to communicate an output of the shell-and-coil heat exchanger (4) with an output of an outdoor heat exchanger (6); b, the bypass solenoid valve (1) is opened when the outdoor environment temperature is equal to or larger than 35 degrees centigrade or the number of started indoor units is more than 80 percent of the total number of the indoor units; c, the bypass solenoid valve (1) is closed when the outdoor environment temperature is reduced to be lower than 35 degrees centigrade or the number of the started indoor units is reduced to be no more than 50 percent of the total number of the indoor units. The refrigeration operating method can enhance the heat exchange effect and improve the energy efficiency.

Description

technical field [0001] The invention relates to a multi-connected air conditioner unit, in particular to a cooling operation method for a multi-connected air conditioner in a high-temperature environment. Background technique [0002] The multi-connected air conditioner unit in the prior art is referred to as a multi-connected unit for short, and it includes an outdoor unit, a plurality of indoor units connected in parallel, and two refrigerant circulation main pipes connecting each indoor unit and outdoor unit. The outdoor unit communicates with multiple indoor units connected in parallel through two refrigerant circulation main pipes. [0003] Each outdoor unit includes a compressor, an oil separator, a four-way reversing valve, an outdoor heat exchanger (condenser for cooling) and a gas-liquid separator. The outlet of the compressor is connected with the inlet of the oil separator, the outlet of the oil separator is connected with the first valve port of the four-way rev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B41/04F25B41/20
CPCF25B41/20
Inventor 侯丽峰涂虬李朝珍
Owner NINGBO AUX ELECTRIC
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