RU2465383C1 - Method of liquid processing of linen in washing machines with vertical drum - Google Patents

Abstract

FIELD: textiles, paper.

SUBSTANCE: method of liquid processing of laundry in washing machines with a vertical drum includes placing the linen into irreversible perforated drum performing cyclically the mechanical influence on the linen, by repeated increasing and decreasing the angular velocity of the drum. Decreasing of the angular velocity is the result of interaction of the rotating drum with a solution, and the cyclical increase of the angular velocity of the washing drum is carried out at decreasing the level of the detergent solution in the tank as a result of its pumping-over into the storage container and the subsequent drain into the tank. The process of changing the level of the washing solution in the tank is multiply repeated.

EFFECT: drum acceleration due to decreasing the resistance of the solution is faster, in consequence of which energy consumption is reduced and processing rate is increased.

1 cl

Description

The invention relates to a liquid treatment of linen and can be used in washing and washing and squeezing drum-type machines.

A known method of washing, which is used in a washing machine [Washing machine JP 3222992 IPC ⁷ D06F 33/02; D06F 37/40; D06F 41/00; D06F 33/02; D06F 37/30; D06F 41/00; (IPC1-7): D06F 33/02; D06F 37/40; D06F 41/00 / Yamamoto Takaharu [JP]; Publ. 10/01/1991], which consists in the fact that the laundry is placed in a vertical perforated drum with subsequent exposure to the laundry during washing by an activator located in the bottom of the vertical drum.

The disadvantage of this method of washing is that the effect is carried out by the activator, and the drum is used only for spin. The activator has a more powerful local effect, so it damages the laundry more than the drum. In addition, to prevent curling, the activator operates in a reverse mode, which leads to increased energy consumption.

A known method of liquid processing of laundry in washing machines [Method of liquid processing of laundry in washing machines: Pat. 2071516 IPC ⁷ D06F 23/02 / Aleshinsky Victor Grigoryevich [UA]; Gutkin Timofei Isaevich [UA]. Application 5024501/12; Claim 07/16/1991; Publ. 01/10/1997], which consists in the fact that the laundry is placed between the net and a non-reversibly rotating vertical perforated drum with subsequent mechanical action on the laundry during the washing process, this effect being carried out by forcing periodically supplying a washing solution (or rinsing water) while continuously spinning the laundry . In practice with this processing method, the laundry sandwiched between the net and the perforated wall of the drum does not wash, but acts as a filter for the solution that seeps through it under the action of centrifugal force.

The disadvantage of this method is the inability to mix and the associated lack of washability.

осуществляется путем многократного увеличения и снижения угловой скорости барабана от ω₁ до

, где r - радиус барабана, a g - ускорение свободного падения.Closest to the invention essentially affecting the laundry is a method of liquid processing of laundry in washing machines [Method of liquid processing of laundry in washing machines: Pat. 2418117 IPC ⁷ D06F 23/04 / Kuznetsov Sergey Anatolyevich [RU]; Lysenko Yaroslav Alekseevich [RU]; Leukhov Alexey Alexandrovich [RU]. Application 2009149162/05; Claim 12/28/2009; Publ. 05/10/2011. Bull. No. 17], which consists in the fact that the laundry is placed in a vertical perforated drum, and the partial immersion of the drum in the solution occurs after it is accelerated to an angular velocity ω _ot , corresponding to the spin, and the subsequent mechanical action on the laundry after a decrease in the angular velocity due to braking by the solution to

is carried out by repeatedly increasing and decreasing the angular velocity of the drum from ω ₁ to

where r is the radius of the drum, ag is the acceleration of gravity.

The disadvantage of this method is the increased energy consumption associated with the fact that the increase in the angular velocity of the drum occurs due to the supply of voltage to the motor windings. Since the washing drum accelerates in an aqueous medium at a constant level of the washing solution, it has to overcome significant resistance.

The objective of this method is to intensify the washing process and reduce energy consumption.

The problem is solved in that in the method of liquid processing of laundry in washing machines with a vertical drum by placing the laundry in a non-reversible perforated drum, which performs mechanical action on the laundry cyclically, by repeatedly increasing and decreasing the angular velocity of the drum, and the decrease in the angular velocity occurs as a result of the interaction of the rotating drum with a solution, while the cyclical increase in the angular velocity of rotation of the washing drum occurs due to a decrease in the level of the washing solution in the tank as a result of its transfer to the storage tank and subsequent discharge into the tank. The acceleration of the drum due to a decrease in the resistance of the solution is faster, as a result of which the energy consumption is reduced and the productivity of the process increases.

Here is an example of the implementation of this method in a washing machine with a vertical washing drum. Figure 1 shows a diagram of a washing machine that implements this method of processing textile products.

In a stationary tank 1, a perforated drum 2 is installed, which is connected to an electric motor 3.

The laundry 8 is placed in the washing drum 2 and the electric motor 3 with a soft characteristic is turned on, to which a constant voltage is applied during the washing process, after which the washing drum reaches the angular velocity ω _max corresponding to the separation factor, at which the laundry is pressed against the walls of the washing drum and rises up along forming a washing drum. Then the valve 6 opens and the washing solution begins to flow from the storage tank 4 into the tank 1 and as the tank 1 and the washing drum 2 are filled, its angular velocity decreases due to an increase in the friction against the aqueous solution to ω _min . As a result of this, the laundry is shifted downward and toward the center of the washing drum, while the mixing and saturation of the laundry with the washing solution occurs (Fig. 1, a). At the next stage of the washing process, the valve 6 closes, and the pump 5 turns on and pumps the washing solution from the washing tub 1 to the storage tank 4, which leads to a decrease in the level of the washing solution and an increase in the angular rotation speed of the washing drum 2 to ω _max (Fig. 1, b ) The minimum working angular velocity ω _min and the maximum working angular velocity of rotation ω _{max are} determined in accordance with the same ratios as in the prototype.

This process is repeated many times. The number of washing cycles depends on the degree of soiling and the type of laundry being processed. The acceleration time and the duration of rotation of the washing drum at ω _min and ω _max depend on the power of the engine and pump, the amount of solution and the size of the washing drum.

After the washing process is completed, the valve 7 opens and the pump 5 pumps out the spent solution from the washing machine, and the angular rotation speed of the washing drum increases and the intermediate extraction process begins. At the end of the intermediate extraction, the storage tank 4 and the tank 1 are filled with water and the rinsing process begins, which is similar to the washing process. After the rinsing process is completed, the water is drained by the pump 5 through the valve 7, and the electric motor increases the angular velocity to ω _ot and the main _{extraction is} carried out.

Claims (1)

The method of liquid processing of laundry in washing machines with a vertical drum by placing the laundry in a non-reversible perforated drum, which performs mechanical action on the laundry cyclically, by repeatedly increasing and decreasing the angular velocity of the drum, and the decrease in angular velocity occurs as a result of the interaction of the rotating drum with a solution, characterized in that a cyclical increase in the angular velocity of rotation of the washing drum occurs due to a decrease in the level of washing solution in the tank as a result of its transfer to the storage tank and subsequent discharge to the tank.