Air conditioner outdoor unit and air conditioner

Abstract

The invention relates to the technical field of air conditioners, in particular to an air conditioner outdoor unit and an air conditioner. The air conditioner outdoor unit aims to solve the problem that the windward area of fan blades of an axial fan cannot be changed, and the heat dissipation effect of the air conditioner in the low-power state is poor. The air conditioner outdoor unit comprisesan axial fan and a fan motor, the axial fan comprises a plurality of fan blades, an output shaft of the fan motor is connected with a central rotor, a plurality of fan blade mounting holes are formedin the central rotor, the tail ends of the fan blades penetrate through the fan blade mounting holes and are rotatably connected with an adjusting mechanism, the adjusting mechanism comprises an elastic pre-tightening piece and a rotating shaft, the elastic pre-tightening piece sleeves the rotating shaft and is fixedly connected with the central rotor, the rotating shaft is fixedly connected withthe central rotor, and the first end of the rotating shaft extends into the central rotor to be connected with the tail ends of the fan blades; and the elastic pre-tightening piece is configured suchthat when the central rotor is operated at a low rotational speed, the centrifugal force generated by the central rotor is less than the pre-tightening force of the elastic pre-tightening piece, so that the rotating shaft drives the fan blades to rotate in the direction of increasing the windward area.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to an air conditioner external unit and an air conditioner. Background technique [0002] An air conditioner is a device that regulates and controls parameters such as temperature, humidity, and flow rate of the ambient air in a building. The current air conditioner usually includes an air conditioner external unit and an air conditioner internal unit according to the installation location. The basic function of the air conditioner external unit is to compress the low-temperature and low-pressure gas discharged from the air-conditioner internal unit into high-pressure and high-temperature gas to cool down and dissipate heat outdoors, and condensed The refrigerant liquid is sent to the evaporator of the air conditioner internal unit to absorb the heat in the room; the air conditioner internal unit mainly uses the refrigerant liquid delivered by the air conditioner external u...

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 in the prior art that the frontal area of ​​the blades of the axial flow fan cannot be changed, resulting in the poor heat dissipation effect of the air conditioner in a low power state, the present invention provides an air conditioner The external unit includes an axial flow fan and a fan motor. The axial flow fan includes a plurality of fan blades. The output shaft of the fan motor is connected to a central rotor. The end of the fan blade passes through the fan blade mounting hole and is rotatably connected to the adjustment mechanism. The adjustment mechanism includes an elastic pretensioning member and a rotating shaft, and the elastic pretensioning member is sleeved on the rotating shaft and connected to the The central rotor is fixedly connected, the rotating shaft is fixedly connected with the central rotor, the first end of the rotating shaft extends into the central rotor and connects with the end of the fan blade; the elastic pretensioning member is configured to When the central rotor is running at a low speed, the centrifugal force generated by the central rotor is smaller than the pre-tightening force of the elastic pre-tensioning member, so that the rotating shaft drives the fan blades to rotate in the direction of increasing the windward area

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