Indoor unit for air conditioner

Abstract

The invention relates to an indoor unit for an air conditioner. The indoor unit comprises a base plate, a front frame, a front panel, a top surface air absorption grating, a plurality of filters, an indoor heat exchanger, an indoor fan, a fan motor, a vortex tongue and an air deflector, wherein the vortex tongue comprises a vortex tongue frame, a vortex tongue straight wall, a connecting rod and a plurality of blades; and the vortex tongue straight wall has a hollow structure, and a plurality of micropores are formed on the surface facing the outer side of the vortex tongue straight wall. In the indoor unit for the air conditioner, the vortex tongue straight wall is designed in the hollow structure, the plurality of micropores are formed on the outer surface of the vortex tongue straight wall, and when reaching the outer surface, air blown from the indoor fan can pass through the micropores to enter the inside of the vortex tongue straight wall, so that noise caused by the impact of airflow on the vortex tongue straight wall can be reduced substantially. In addition, the outer surface of the vortex tongue straight wall is inclined, so the flowing of the airflow is facilitated; and the shapes of air swirls at the vortex tongue can be changed by a method for changing inclination angles, so that the noise caused by the vortex can be reduced effectively.

Description

technical field [0001] The invention relates to an air conditioner, in particular to an indoor unit of the air conditioner. Background technique [0002] Generally, an air conditioner is a device that makes a refrigerant inside undergo a refrigeration or heating cycle consisting of a compression process, a condensation process, an expansion process, and an evaporation process. When the air conditioner is in the refrigeration cycle, the refrigerant compressed by the compressor and turned into a high-temperature and high-pressure state first flows into the outdoor heat exchanger, where the refrigerant will dissipate heat to the outside, then flow to the expansion valve, and then flow through the expansion valve. The valve significantly reduces its temperature and pressure, and then this low-temperature, low-pressure refrigerant will flow into the indoor heat exchanger. In the indoor heat exchanger, the refrigerant will absorb the heat of the surrounding air, and finally flow ...

AI Technical Summary

Problems solved by technology

However, this prior art air conditioner indoor unit has the following problems: as mentioned above, the installation position of the volute tongue 11 is just on the flow path of the air, so it will inevitably be impacted by the air flow, so it is easy to generate eddy currents here, The result is louder noise, which can lead to consumer dissatisfaction

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