Flow channel, driving structure, and swimming pool cleaning robot

Abstract

A flow channel, a driving structure, and a swimming pool cleaning robot are provided. The flow channel includes two flow sub-channels. A water inlet is provided at the bottom of the flow sub-channel. A water outlet is provided at a side of the flow sub-channel. Orientations of water outlets of the two flow sub-channels are opposite. The two flow sub-channels are symmetrical with respect to a center. Application of the flow channel can reduce costs of swimming pool cleaning robots.

1 . A flow channel comprising two flow sub-channels; a water inlet at a bottom of each of the two flow sub-channels; and a water outlet at a side of each of the two flow sub-channels, wherein an orientation of the water outlet of one of the two flow sub-channels is opposite to an orientation of the water outlet of another one of the two flow sub-channels, and the two flow sub-channels are located central symmetrically. 
     
     
         2 . The flow channel according to  claim 1 , wherein each of the two flow sub-channels comprises a volute-shaped inlet section which is volute-shaped and a curved outlet section which is curved, the volute-shaped inlet and the curved outlet sections are connected to each other, the water inlet is disposed at a bottom of the volute-shaped inlet section, and the water outlet is disposed on a side of the curved outlet section. 
     
     
         3 . The flow channel according to  claim 2 , wherein the volute-shaped inlet section comprises a first flow section, a second flow section, and a third flow section; the first flow section, the second flow section, and the third flow section are connected in sequence in a water flow direction; and the first flow section is provided with the water inlet;
 a radius of curvature of the first flow section is defined as R 1 ; a radius of curvature of the second flow section is defined as R 2 ; and the radius of curvature of the third flow section is defined as R 3 , wherein R 1 , R 2 , and R 3  satisfy R 1 ≤R 2 ≤R 3 .   
     
     
         4 . The flow channel according to  claim 3 , wherein R 1 , R 2 , and R 3  further satisfy at one of followings:
 21 mm≤R 1 ≤30 mm;   30 mm≤R 2 ≤36 mm; and   36 mm≤R 3 ≤50 mm.   
     
     
         5 . The flow channel according to  claim 1 , further comprising two guide plates, the two guide plates are respectively disposed in the two flow sub-channels and are close to the water outlet of the respective two flow sub-channels. 
     
     
         6 . A driving structure comprising:
 the flow channel according to  claim 1 ;   two impellers respectively disposed in the two flow sub-channels and close to the water inlet of the respective two flow sub-channels; and   two driving motors drivingly connected respectively to the two impellers, the two driving motors configured to drive the respective two impellers to rotate.   
     
     
         7 . The driving structure according to  claim 6 , wherein each of the two flow sub-channels comprises a volute-shaped inlet section which is volute-shaped and a curved outlet section which is curved, the volute-shaped inlet and the curved outlet sections are connected to each other, the water inlet is disposed at a bottom of the volute-shaped inlet section, and the water outlet is disposed on a side of the curved outlet section. 
     
     
         8 . The driving structure according to  claim 7 , wherein the volute-shaped inlet section comprises a first flow section, a second flow section, and a third flow section; the first flow section, the second flow section, and the third flow section are connected in sequence in a water flow direction; and the first flow section is provided with the water inlet;
 a radius of curvature of the first flow section is defined as R 1 ; a radius of curvature of the second flow section is defined as R 2 ; and the radius of curvature of the third flow section is defined as R 3 , wherein R 1 , R 2 , and R 3  satisfy R 1 ≤R 2 ≤R 3 .   
     
     
         9 . The driving structure according to  claim 8 , wherein R 1 , R 2 , and R 3  further satisfy at one of followings:
 21 mm≤R 1 ≤30 mm;   30 mm≤R 2 ≤36 mm; and   36 mm≤R 3 ≤50 mm.   
     
     
         10 . The driving structure according to  claim 6 , wherein the flow channel further comprises two guide plates, the two guide plates are respectively disposed in the two flow sub-channels and are close to the water outlet of the respective two flow sub-channels. 
     
     
         11 . The driving structure according to  claim 6 , wherein a bottom of each of the two impellers is provided with a water entry, a side of each of the two impellers is provided with a drainage outlet, the water entry is connected to the water inlet of a respective flow sub-channels of the two flow sub-channels, and the drainage outlet is connected to the water outlet of the respective flow sub-channel. 
     
     
         12 . The driving structure according to  claim 6 , further comprising a sealed chamber, and the two driving motors are disposed inside the sealed chamber, an output shaft of each of the two driving motors protrudes out of the sealed chamber and into the respective flow sub-channel, so as to drivingly connected to the respective impeller. 
     
     
         13 . The driving structure according to  claim 12 , wherein a bottom of each of the two impellers is provided with a water entry, a side of each of the two impellers is provided with a drainage outlet, the water entry is connected to the water inlet of a respective flow sub-channels of the two flow sub-channels, and the drainage outlet is connected to the water outlet of the respective flow sub-channel. 
     
     
         14 . A swimming pool cleaning robot comprising a main body and the driving structure according to  claim 6 , wherein the driving structure is disposed on the main body.