RU78219U1 - WASHER - Google Patents

Abstract

A washing machine with a device for balancing a rotating drum of a washing machine in spin mode has been developed. The proposed design of the washing machine can significantly reduce its metal consumption by removing massive balances, reduces the dynamic loads on the parts and components of the washing machine that occur when the washing unit vibrates during centrifugal spinning, significantly improves the performance of the machine, provides better spinning by improving the balancing conditions a washing drum.

Description

The present invention relates to washing machines used in laundry factories for the processing of textiles in utilities, as well as in everyday life and allows to increase the vibration resistance of washing machines during centrifugal extraction.

A front-loading drum-type washing machine is known, comprising a front panel, a hopper for detergents, a control panel, electrovalves, a level switch, a tank, an adjustable foot, a drain pump, a drain hose, a tank suspension spring, an electric motor, a shock absorber, counterweights ( V. Kolyada, Modern Washing Machines, Issue No. 54, Book 2 - Moscow: Solor-R, 2001), pp. 161-162.

A prototype of the invention is a technical solution proposed by Samsung; (V. Kolyada. Modern washing machines. Issue No. 54, Book 2 - Moscow: Solor-R, 2001), p. 161. The original Can Balance.

The original Can Balance system used in the Sensor Quiet washing machines (model SWF 1200) eliminates the loading imbalance in the drum. Balls located in the front and back of the drum move in the direction opposite to the place of occurrence of the imbalance, compensating for the uneven distribution of linen. This system has replaced traditional balances.

The disadvantage of this machine is the design complexity associated with

mainly with the device of the drum, and the ability to jam balls when they are corroded.

The aim of the invention is to increase the reliability, simplify the design, reduce vibration during centrifugal spinning.

This goal is achieved by the fact that in the front-loading washing and squeezing machine containing the perforated washing drum 3 installed in the housing, we encircle an annular balancing belt (FIG. 1). The proposed balancing belt 2, consisting of metal rods 6 made of stainless steel, as well as elastic elements 4 and is located outside the washing drum in the tank 1.

The device operates as follows.

The balancing of the drum 3 occurs due to the lag of the belt 2 from the surface of the drum, in the direction opposite to the place of occurrence of the imbalance, while the belt comes off the side surface in the opposite direction to the linen, which compensates for the uneven distribution of linen. In this case, it is proposed to balance the laundry 5 with mass M, remote from the center of the axis of rotation of the belt of mass m ₁ by a distance e. Since the balancing belt is evenly adjacent to the side surface of the drum, the centers of mass of the belt (O.p.) and drum O in the initial period coincide, and are located on the axis of rotation O (O.p.) (Figure 1). At the time of extraction, the center of mass of the belt and drum do not coincide, an eccentricity e ₁ appears. The centrifugal force of the laundry (Fc.b.) is balanced by the centrifugal force

belt (Rp.p.) (Figure 2).

The effectiveness of counteracting the imbalance is estimated by the ratio of the eccentricities of the center of mass of the linen and the belt. In this device [N.I. Levitsky. Fluctuations in mechanisms. - Moscow: Nauka, 1988], pp. 230-232.

at the initial moment;

during the spin cycle.

where M ₁ is the value of the corrective mass;

M - mass of coma underwear;

R is the distance from the axis of rotation to the center of mass of the correction mass;

e - the value of eccentricity at the initial moment;

e ₁ - the value of the eccentricity at the time of extraction.

On the other hand, the value of the corrective mass is equal to the sum of the masses of the rods and springs:

where n is the number of rods;

a is the width of the rod;

b is the length of the rod;

C is the height of the rod;

ρ is the density of the rod;

m _spring is the mass of the spring.

The mass of one rod is equal to:

The rational value of the length of the rod b is (80-90)% of the width of the drum l (Figure 1.), the width of the rod, respectively (8-12)% of the width of the drum, the height of the rod (4 - 6)% of the width of the drum:

Thus, the dimensions and mass of the rod are derived from the width of the drum, and the values are taken to the maximum.

This invention solves the problem of creating a washing machine with a reduced amplitude of oscillations of its moving part at the stages of acceleration and steady rotation with the achievement of the technical result, which consists in improving the balancing properties.

The use of a balancing belt of rods and elastic elements increases the reliability of the washing machine due to the reduction of vibration during centrifugal extraction of linen, simplifying the design, as well as reducing metal consumption by removing counterweights

drum and improving performance by reducing dynamic loads resulting from insufficient balancing of the washing drum, which allows to reduce the level of vibration, at least not inferior to the close technical solution proposed by Samsung.

Claims (2)

1. The front-loading drum type washing machine, comprising a front panel, a detergent hopper in the main body, a control panel, electrovalves, a level switch, a tank, an adjustable foot, a drain pump, a drain hose, a tank suspension spring, an electric motor, a shock absorber, characterized the fact that the washing drum is surrounded by an annular balancing belt, consisting of metal rods connected by elastic elements, rotating with a slight gap from the drum, affecting the position of imbalance and about ensuring balance of a washing tank at centrifugal extraction. 2. The washing machine according to claim 1, characterized in that the rational value of the length of the rod b is 80-90% of the width of the drum l, the width of the rod, respectively, 8-12% of the width of the drum, the height of the rod 4-6% of the width of the drum.