Air Conditioner Outdoor Unit

Abstract

The present disclosure provides an air conditioner outdoor unit that includes: a motor having first and second output shafts; a first-stage fan blade connected to the first output shaft; a second-stage fan blade connected to the second output shaft. The motor is configured to drive the first-stage and second-stage fan blades to rotate, and rotation directions of the first-stage and second-stage fan blades are opposite. The motor is located between the first-stage and second-stage fan blades, or on the same side of the first-stage and second-stage fan blades. The outdoor unit is provided with a motor, and first-stage and second-stage fan blades, so that the motor drives the first-stage fan blade to rotate through the first output shaft, and drives the second-stage fan blade to rotate in the opposite direction through the second output shaft. By recovering the rotational energy of the airflow, higher wind pressure is achieved.

What is claimed is: 
     
         1 . An air conditioner outdoor unit, comprising:
 a motor, being provided with a first output shaft and a second output shaft;   a first-stage fan blade, being connected to the first output shaft;   a second-stage fan blade, being connected to the second output shaft;   a shell, being provided with an outlet, the first-stage fan blade and the second-stage fan blade being located at the outlet, the first-stage fan blade being an upstream fan blade, and the second-stage fan blade being a downstream fan blade; and   a motor bracket, being connected to the shell, and the motor being arranged on the motor bracket,   wherein, the motor is configured to drive the first-stage fan blade and the second-stage fan blade to rotate, and rotation directions of the first-stage fan blade and the second-stage fan blade are opposite; and   the motor is located between the first-stage fan blade and the second-stage fan blade; or   the motor is located on the same side of the first-stage fan blade and the second-stage fan blade.   
     
     
         2 . The air conditioner outdoor unit according to  claim 1 , wherein
 a rotation axis of the first output shaft and a rotation axis of the second output shaft are collinear.   
     
     
         3 . The air conditioner outdoor unit according to  claim 1 , wherein
 the first output shaft is a hollow shaft, and the second output shaft passes through the hollow shaft.   
     
     
         4 . The air conditioner outdoor unit according to  claim 1 , wherein
 a rotation speed ratio of the second output shaft and the first output shaft ranges from 0.5 to 2.   
     
     
         5 . The air conditioner outdoor unit according to  claim 1 , further comprising:
 a wind guide ring, being arranged at the outlet, and the first-stage fan blade and the second-stage fan blade are arranged in the wind guide ring.   
     
     
         6 . The air conditioner outdoor unit according to  claim 5 , wherein
 the wind guide ring comprises:   a wind ring main body, one end of the wind ring main body forming an air outlet end; and   a contraction portion, being connected to another end of the wind ring main body, and a transition arc being formed between the contraction portion and the wind ring main body,   wherein, a circle center of the transition arc is located outside the wind guide ring.   
     
     
         7 . The air conditioner outdoor unit according to  claim 6 , wherein
 along an axial direction of the first output shaft, 10% to 90% of a height of the first-stage fan blade is located in the wind ring main body.   
     
     
         8 . The air conditioner outdoor unit according to  claim 6 , wherein
 taking a direction perpendicular to a rotation axis of the first-stage fan blade as a radial direction of the first-stage fan blade, along the radial direction of the first-stage fan blade, a distance from a tip of the first-stage fan blade to an axis of the first-stage fan blade is L 1 ,   a corresponding radius of the transition arc ranges from 0.01×L 1  to 2×L 1 .   
     
     
         9 . The air conditioner outdoor unit according to  claim 1 , wherein
 taking a direction perpendicular to a rotation axis of the first-stage fan blade as a radial direction of the first-stage fan blade, along the radial direction of the first-stage fan blade, a distance from a tip of the first-stage fan blade to an axis of the first-stage fan blade is L 1 ; and   taking a direction perpendicular to a rotation axis of the second-stage fan blade as a radial direction of the second-stage fan blade, along the radial direction of the second-stage fan blade, a distance from a tip of the second-stage fan blade to an axis of the second-stage fan blade is L 2 ,   an axial distance between the first-stage fan blade and the motor bracket ranges from 5 mm to 2×L 1 ; or   an axial distance between the second-stage fan blade and the motor bracket ranges from 5 mm to 2×L 2 .   
     
     
         10 . The air conditioner outdoor unit according to  claim 5 , wherein
 taking a direction perpendicular to a rotation axis of the first-stage fan blade as a radial direction of the first-stage fan blade, along the radial direction of the first-stage fan blade, a distance from a tip of the first-stage fan blade to an axis of the first-stage fan blade is L 1 ; and   taking a direction perpendicular to a rotation axis of the second-stage fan blade as a radial direction of the second-stage fan blade, along the radial direction of the second-stage fan blade, a distance from a tip of the second-stage fan blade to an axis of the second-stage fan blade is L 2 ,   along the radial direction of the first-stage fan blade, a distance from the tip of the first-stage fan blade to the wind guide ring ranges from 0.01×L 1  to 0.1×L 1 ; and/or   along the radial direction of the second-stage fan blade, a distance from the tip of the second-stage fan blade to the wind guide ring ranges from 0.01×L 2  to 0.1×L 2 .   
     
     
         11 . The air conditioner outdoor unit according to  claim 6 , wherein
 the wind guide ring further comprises an expansion portion, being connected to the air outlet end of the wind ring main body.   
     
     
         12 . The air conditioner outdoor unit according to  claim 6 , further comprising:
 a mesh cover, being arranged at the air outlet end of the wind guide ring.   
     
     
         13 . The air conditioner outdoor unit according to  claim 5 , further comprising:
 a heat exchanger, being arranged in the shell, and the heat exchanger being located between an air inlet and an outlet of the shell, and   an electric control component is arranged on the shell, wherein   taking a direction perpendicular to a rotation axis of the first-stage fan blade as a radial direction of the first-stage fan blade, along the radial direction of the first-stage fan blade, a distance from a tip of the first-stage fan blade to an axis of the first-stage fan blade is L 1 ,   along an axial direction of the first output shaft, a distance between the electric control component and the motor bracket is greater than 0.02×L 1 .   
     
     
         14 . The air conditioner outdoor unit according to  claim 6 , further comprising:
 a third-stage fan blade, being arranged on the wind guide ring and located at the air outlet end of the wind guide ring.   
     
     
         15 . The air conditioner outdoor unit according to  claim 1 , wherein
 taking a direction perpendicular to a rotation axis of the first-stage fan blade as a radial direction of the first-stage fan blade, along the radial direction of the first-stage fan blade, a distance from a tip of the first-stage fan blade to an axis of the first-stage fan blade is L 1 ; and   taking a direction perpendicular to a rotation axis of the second-stage fan blade as a radial direction of the second-stage fan blade, along the radial direction of the second-stage fan blade, a distance from a tip of the second-stage fan blade to an axis of the second-stage fan blade is L 2 ,   an axial distance between the first-stage fan blade and the second-stage fan blade ranges from 0.02×L 1  to 2×L 1 ; or   an axial distance between the first-stage fan blade and the second-stage fan blade ranges from 0.02×L 2  to 2×L 2 .   
     
     
         16 . An air conditioner outdoor unit, comprising:
 a first motor;   a first-stage fan blade, being connected with an output shaft of the first motor, and the first motor being configured to drive the first-stage fan blade to rotate;   a second motor, a rotation axis of the output shaft of the first motor and a rotation axis of the output shaft of the second motor being collinear;   a second-stage fan blade, being connected with the output shaft of the second motor, the second motor being configured to drive the second-stage fan blade to rotate, a rotation direction of the first-stage fan blade being opposite to a rotation direction of the second-stage fan blade;   a shell, being provided with an outlet, the first-stage fan blade and the second-stage fan blade being located at the outlet, the first-stage fan blade being an upstream fan blade, and the second-stage fan blade being a downstream fan blade;   a first motor bracket, the first motor being arranged on the first motor bracket, and the first motor bracket being connected with the shell; and   a second motor bracket, the second motor being arranged on the second motor bracket, and the second motor bracket being connected with the shell,   wherein, the first motor bracket is located on the same side of the first-stage fan blade and the second-stage fan blade; or the first motor bracket is located between the first-stage fan blade and the second-stage fan blade,   the second motor bracket is located on the same side of the first-stage fan blade and the second-stage fan blade; or the second motor bracket is located between the first-stage fan blade and the second-stage fan blade.   
     
     
         17 . The air conditioner outdoor unit according to  claim 16 , further comprising:
 a wind guide ring, being arranged at the outlet and the first-stage fan blade and the second-stage fan blade being located in the wind guide ring.   
     
     
         18 . The air conditioner outdoor unit according to  claim 17 , wherein
 the wind guide ring comprises:   a wind ring main body, one end of the wind ring main body forming an air outlet end; and   a contraction portion, one end of the contraction portion being connected with another end of the wind ring main body, and a transition arc being formed between the contraction portion and the wind ring main body,   wherein, a circle center of the transition arc is located outside the wind guide ring.   
     
     
         19 . The air conditioner outdoor unit according to  claim 18 , wherein
 along an axial direction of the output shaft, 10% to 90% of a height of the first-stage fan blade is located in the wind ring main body; and/or   along the axial direction of the output shaft, the second-stage fan blade is located in the wind ring main body.   
     
     
         20 . The air conditioner outdoor unit according to  claim 18 , wherein
 the air outlet end of the wind guide ring is provided with an expansion portion extending outside the wind guide ring,   when the second motor bracket is located on the same side of the first-stage fan blade and the second-stage fan blade, the second motor bracket is located outside the wind guide ring.