Noise reduction flow dividing device based on multi-connection air conditioning system

Abstract

The invention discloses a noise reduction flow dividing device based on a multi-connection air conditioning system. The flow dividing device comprises an electronic expansion valve and a divider. A step through hole accommodating a divider body is formed in a divider casing, the top end of the step through hole is communicated with the bottom end of an input unit, and the diameter of the step hole on the lower portion is larger than that of the step hole on the upper portion of the divider casing. A step through hole for conducting throttling and pressure reduction on coolant is formed in the divider body center along the coolant flowing direction. By means of the device, noise reduction cost can be reduced, and indoor space use rate can be improved.

Description

technical field [0001] The invention relates to air-conditioning control technology, in particular to a noise-reducing splitter device based on a multi-connected air-conditioning system. Background technique [0002] In the indoor unit of the multi-connected air conditioning system, in the cooling operation state, the electronic expansion valve is used as a throttling device for the refrigerant fluid circulation of the indoor unit. By adjusting its opening, the refrigerant circulation amount of the indoor unit can be controlled, thereby realizing The purpose of temperature and humidity adjustment is to create a comfortable working and living environment for users. [0003] The refrigerant fluid is a mixed fluid formed of a liquid refrigerant and a gas refrigerant. In the process of refrigerant fluid circulation, due to the small diameter of the throttling hole of the electronic expansion valve, the refrigerant fluid before and after throttling has a large pressure differenc...

AI Technical Summary

Problems solved by technology

However, this technical solution needs to install a shunt device consisting of capillary tubes, pressure regulators, and multiple pressure sensors in the indoor unit, and the cost of achieving noise reduction is high; at the same time, the deployment of capillary tubes, pressure regulators, and pressure sensors increases indoor The volume of the indoor unit, in the case of extremely limited indoor space, the increase in the volume of the indoor unit is equivalent to reducing the utilization rate of the indoor space, which is also not conducive to the miniaturization of the indoor unit; indoor units for different operating conditions and different operating parameters are required. The capillary tubes are designed separately, so that the capillary tubes cannot be mass-produced, and the design and production costs are high; furthermore, due to the special structure of the capillary tubes, not only the processing technology is complicated, but also the installation and debugging operations are inconvenient, which increases the maintenance cost

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