Washing machine without water between barrels and control method

Abstract

A washing machine without water between barrels and control method are provided. The washing machine comprises an outer barrel, an inner barrel, an air chamber, and a pressure sensor connected to the air chamber. A plurality of drainage holes are arranged on the upper part near the edge of the inner barrel. At least one inner barrel drain outlet is arranged at a bottom of the inner barrel. A telescopic drain valve capable of plugging the inner barrel drain outlet is arranged at a bottom of the outer barrel. An outer barrel drain outlet is arranged at the bottom of the outer barrel. A washing machine drainage pipeline is arranged on the outer barrel drain outlet. The outer barrel is provided with the air chamber communicated with the inner barrel. An air chamber drain outlet capable of discharging water in the air chamber is arranged on the air chamber.

1 . A washing machine without water between barrels, comprising an outer barrel, an inner barrel, an air chamber and a pressure sensor connected to the air chamber, wherein:
 a plurality of drainage holes are arranged on the upper part near the edge of the inner barrel, at least one inner barrel drain outlet is arranged at a bottom of the inner barrel,   a telescopic drain valve capable of plugging the inner barrel drain outlet is arranged at a bottom of the outer barrel, an outer barrel drain outlet is arranged at the bottom of the outer barrel,   a washing machine drainage pipeline is arranged on the outer barrel drain outlet, the outer barrel is provided with the air chamber communicated with the inner barrel, an air chamber drain outlet capable of discharging water in the air chamber is arranged on the air chamber.   
     
     
         2 . The washing machine without water between barrels according to  claim 1 , wherein the outer barrel and the inner barrel are concentrically arranged, a distance from a center of the inner barrel drain outlet to a center of the inner barrel is less than or equal to a distance from a center of the outer barrel drain outlet to a center of the outer barrel. 
     
     
         3 . The washing machine without water between barrels according to  claim 1 , wherein the air chamber drain outlet is communicated with the washing machine drainage pipeline through a first pipeline, a control valve capable of controlling the opening and closing of the first pipeline is arranged at the air chamber drain outlet or in the first pipeline. 
     
     
         4 . The washing machine without water between barrels according to  claim 3 , wherein the control valve is provided with a first traction motor, and the first traction motor is arranged at the bottom of the outer barrel,
 or the control valve is connected with a second traction motor of the telescopic drain valve.   
     
     
         5 . The washing machine without water between barrels according to  claim 1 , wherein the air chamber is communicated with the inner barrel through the telescopic drain valve,
 the telescopic drain valve is a hollow structure, an upper part of the telescopic drain valve is provided with a water inlet, a lower part of the telescopic drain valve is provided with a water outlet, the water outlet is connected with the air chamber through a elastic pipe.   
     
     
         6 . The washing machine without water between barrels according to  claim 1 , wherein the telescopic drain valve at least comprises a telescopic valve plug, the telescopic valve plug comprises a telescopic valve rod and a sealing sleeve of elastic sleeved on the valve rod and expanding and retracting with the valve rod,
 an inner of the valve rod is a hollow structure, an upper part of the valve rod is provided with a water inlet, a lower part of the valve rod is provided with a water outlet, the water inlet is provided with a gland,   an upper part of the sealing sleeve extends into the water inlet, the gland and the valve rod are connected and the sealing sleeve is pressed between the gland and the valve rod, a top part of the gland is a hollow-out structure.   
     
     
         7 . The washing machine without water between barrels according to  claim 6 , wherein the top part of the gland protrudes upwards and has a hemispherical arc surface, a middle portion of the hemispherical arc surface is higher and a surrounding portion of the hemispherical arc surface is lower. 
     
     
         8 . The washing machine without water between barrels according to  claim 6 , wherein when the telescopic drain valve plugs the inner barrel drain outlet, the top of the gland is higher than the bottom of the inner barrel,
 when the telescopic drain valve enables the inner barrel drain outlet to be open, the top of the gland is higher than the bottom of the outer barrel.   
     
     
         9 . The washing machine without water between barrels according to  claim 6 , wherein the sealing sleeve is provided with a ring of elastic convex rib around the gland, a diameter of the elastic convex rib is larger than that of the inner barrel drain outlet. 
     
     
         10 . A control method of the washing machine without water between barrels according to  claim 1 , comprising:
 1) locking the inner barrel, controlling the telescopic drain valve to plug the inner barrel drain outlet, feeding water into the inner barrel of the washing machine, and the water inside the inner barrel entering into the air chamber and compressing the air inside the air chamber, detecting the air pressure of the air chamber to obtain the water level of the inner barrel;   2) controlling the telescopic drain valve to enable the inner barrel drain outlet to be open, and the water inside the inner barrel being drained into the outer barrel;   3) controlling the air chamber drain outlet to open, the water inside the air chamber being drained away.   
     
     
         11 . The washing machine without water between barrels according to  claim 2 , wherein the distance from the center of the inner barrel drain outlet to the center of the inner barrel is equal to the distance from the center of the outer barrel drain outlet to the center of the outer barrel. 
     
     
         12 . The washing machine without water between barrels according to  claim 2 , wherein a diameter of the outer barrel drain outlet is larger than that of the inner barrel drain outlet. 
     
     
         13 . The washing machine without water between barrels according to  claim 3 , wherein the first pipeline is connected with the washing machine drainage pipeline through a three-way joint. 
     
     
         14 . The washing machine without water between barrels according to  claim 3 , wherein the air chamber drain outlet is located at a bottom of the air chamber. 
     
     
         15 . The washing machine without water between barrels according to  claim 5 , wherein the elastic pipe is a hose or a bellows. 
     
     
         16 . The washing machine without water between barrels according to  claim 6 , wherein the top part of the gland is a grid structure, a gap between the grids forms a water hole. 
     
     
         17 . The control method of the washing machine without water between barrels according to  claim 10 , wherein after controlling the telescopic drain valve to enable the inner barrel drain outlet to be open, unlocking the inner barrel, controlling the inner barrel to rotate until the inner barrel drain outlet directly faces to the outer barrel drain outlet, the water inside the inner barrel being directly drained into the outer barrel drain outlet.