CN201695218U - double pulsator washing machine - Google Patents

Abstract

The utility model relates to a pulsator type washing machine. The double pulsator includes an inner pulsator and an outer pulsator. The outer pulsator is petal-shaped and located on the outer periphery of the inner pulsator; the upper end of the inner pulsator shaft is connected to the inner pulsator, and the lower end is connected to the planet carrier; the outer pulsator shaft is a hollow shaft. The upper end is connected to the outer pulsator, and the lower end is connected to the inner sun gear. The middle part of the inner pulsator shaft is inserted into the outer pulsator shaft; the planet carrier is spoke-shaped, and its ends are equipped with more than two planetary gears. The two planetary gears Mesh with the internal sun gear and the external sun gear respectively; more than two planetary gears, the internal sun gear and the external sun gear form a reducer, and the other end of the shaft of the external sun gear is connected to the motor through a belt transmission mechanism. The utility model can automatically adjust the rotating speed according to the received clothes and water flow resistance, so as to achieve the purposes of low wear rate, low entanglement, energy saving, improved cleaning ratio and service life of the washing machine.

Description

double pulsator washing machine

technical field

The utility model relates to a pulsator type washing machine.

Background technique

A traditional washing machine consists of a washing tub, a motor, a reducer and a pulsator. In the washing machine, the motor rotates in the positive direction under the control of the control system, and the rotation of the motor is transmitted to the input wheel of the reducer through the V-belt. The reducer uses gear transmission (such as a planetary gear train) to convert the high speed of the motor into the low Rotating speed. Driven by the reducer, the pulsator rotates in forward and reverse directions, driving the clothes and water to rotate for washing. This washing method has been tested in practice and found to have some defects: 1. Only relying on the rotation of the pulsator to generate water flow, the water flow is single, and the washing uniformity of clothes is not high. 2. Clothes are prone to entanglement during washing. In order to overcome the shortcomings of the appeal, some washing machine manufacturers have designed a "dual power" pulsator washing machine. The difference from the traditional washing machine is that the traditional reducer has only one pulsator shaft, and the pulsator is sleeved on the pulsator shaft; "There are two pulsator shafts in the reducer of the pulsator washing machine. The two pulsator shafts are coaxially sleeved together. The two pulsator shafts are respectively installed on the two pulsator shafts. The two pulsator shafts are concentric. The washing method is as follows: when washing, two concentric pulsators rotate at the same time, and the direction of rotation is opposite. Both pulsators are driven by power and the speed ratio is constant. Because the two pulsators rotate forward and reverse at the same time, the strength of the water flow is increased, and the washing ratio is improved. At the same time, the direction of the water flow is constantly changed, so that the clothes are tumbling stronger than the traditional washing machine. However, the disadvantages of this technical solution: 1. The water flow intensity is relatively high during washing, and the wear rate of the clothes is high, so it is not suitable for washing clothes made of soft cloth; And the resistance suffered by the reducer itself is greatly increased. Through comparative tests, under the same test conditions, the motor temperature of the dual-power pulsator washing machine is 5-10K higher than that of the traditional washing machine, the power consumption is increased, and the life of the transmission gear of the reducer is also lower than that of the traditional washing machine; 3. "Dual power" The structure of the reducer is more complicated than that of the traditional reducer, and the manufacturing cost is high.

Contents of the invention

In order to solve the problems of single washing machine water flow, low washing effect and easy winding in the prior art, the utility model provides a double wave wheel washing machine.

The double wave washing machine includes a washing tub, a wave wheel, a reducer and an electric motor. The pulsator includes an inner pulsator 2 and an outer pulsator 1, the outer pulsator 1 is petal-shaped and located on the outer periphery of the inner pulsator 2; the upper end of the inner pulsator shaft 4 is connected to the inner pulsator 2, and the lower end thereof is connected to the planet carrier 8; The outer pulsator shaft 5 is a hollow shaft, its upper end is connected with the outer pulsator 1, its lower end is connected with the inner gear sun gear 10, the middle part of the inner pulsator shaft 4 is inserted in the outer pulsator shaft 5; the planet carrier 8 is disc-shaped, Two or more planetary gears 9 are evenly distributed at its end, and more than two planetary gears 9 mesh with the inner sun gear 10 and the outer sun gear 12 respectively; more than two planetary gears 9, the inner sun gear 10 and the outer sun gear The toothed sun gear 12 forms a speed reducer, and the other end of the wheel shaft 13 of the external toothed sun gear 12 is connected to the motor through a belt transmission mechanism.

The planet carrier 8 is in the shape of a cross, and a circular reinforcing ring is arranged on its outer periphery.

Compared with the prior art, the utility model has the following advantages:

1. The input shaft of the reducer and the two pulsator shafts form a differential gear train with two degrees of freedom. However, the traditional washing machine reducer and dual-power pulsator reducer have only one degree of freedom, and the ratio between the pulsator speed and the motor speed is constant. The speed reducer of this scheme has two degrees of freedom as a differential gear train. The speed of the two wave wheels is not constant. The two wave wheels can automatically adjust the speed according to the change of the load. When one wave wheel is blocked, the other wave wheel The speed of the wheel will be accelerated, so that the motor will not be blocked, reducing power consumption, and at the same time, the requirements for the output power of the motor can also be reduced, reducing the cost of the motor.

2. Reduce the wear rate of clothes and improve the uniformity of washing. When the resistance of one of the pulsators (a pulsator) increases due to the entanglement of the clothes, the speed of the a pulsator will decrease, reducing the wear on the clothes, and at the same time the speed of the other pulsator (b pulsator) will immediately accelerate, The water is driven to disperse the clothes. After the load of the a wave wheel decreases, the speed increases, and the speed of the b wave wheel decreases again. Since the force of friction between the pulsator and the clothes is reduced, and the water flow is used to impact the clothes, the uniformity of washing is improved and the wear rate is reduced.

3. The rotational speed of the pulsator of the existing washing machine is constant, regardless of the load resistance, it rotates at a certain rotational speed, which easily causes the clothes to be entangled. For example: when the clothes are entangled in the clockwise direction, the resistance of the pulsator increases, but the pulsator still rotates at the same speed in the clockwise direction, which will aggravate the entanglement. This solution solves this problem very well. When the clockwise rotation load increases, the speed of the pulsator will decrease immediately, and the other pulsator will accelerate and rotate in the opposite direction, driving the water flow to rotate in the opposite direction and unwinding the clothes.

4. Since there are two pulsators, the combination of various pulsator shapes can be changed to form various water flows.

Description of drawings

Fig. 1 is a structural representation of the utility model,

Figure 2 is a schematic top view sectional view of the reducer.

Detailed ways

Below in conjunction with the accompanying drawings, the utility model is further described in detail through the embodiments.

Example 1:

Referring to Fig. 1 and Fig. 2, the double pulsator washing machine includes a washing tub 6, a pulsator, a speed reducer and an electric motor.

The pulsator includes an inner pulsator 2 and an outer pulsator 1. The outer pulsator 1 is petal-shaped and located on the outer periphery of the inner pulsator 2; the upper end of the inner pulsator shaft 4 is connected to the inner pulsator 2, and the lower end is connected to the planet carrier 8, which is cross-shaped The outer circumference of the planet carrier 8 is provided with a circular reinforcing ring. The outer pulsator shaft 5 is a hollow shaft, its upper end is connected with the outer pulsator 1, and its lower end is connected with the inner gear sun gear 10, the middle part of the inner pulsator shaft 4 is inserted into the outer pulsator shaft 5 through the bearing 3, and the outer pulsator shaft 5 passes through the bearing 7 Installed in the reducer 11 shell. The speed reducer 11 is installed at the bottom of the washing bucket 6, and there is a water-sealing rubber 14 between the speed reducer 11 and the washing bucket 6. The planet carrier 8 is a cross, and its four ends are respectively equipped with planetary gears 9, and the planetary gears 9 of the four end parts are respectively meshed with the internal tooth sun gear 10 and the external tooth sun gear 12; the four planetary gears 9, the internal tooth sun gear The wheel 10 and the external tooth sun gear 12 form a speed reducer, and the other end of the wheel shaft 13 of the external tooth sun gear 12 is connected to the motor through a belt transmission mechanism.

During washing, the motor drives the belt pulley 15 to rotate (for example, counterclockwise) through the V-belt, the input shaft and the external gear sun gear 12 also rotate counterclockwise, and the planetary gear 9 rotates clockwise, as shown in Fig. 2 .

The two pulsator shafts of the reducer of the present utility model have two degrees of freedom, assuming that the resistance suffered by the inner pulsator 2 and the outer pulsator 1 is the same, that is, the resistance torque suffered by the planet carrier 8 and the inner gear sun gear 10 is the same . When the planetary gear 9 rotates clockwise, the inner sun gear 10 rotates clockwise, and the outer pulsator 1 connected with the inner sun gear 10 also rotates clockwise; the planetary gear 9 drives the planetary carrier 8 to rotate counterclockwise, and the planetary carrier 8 The connected internal pulsator 2 also rotates counterclockwise.

Assume that the resistance experienced by the outer pulsator 1 is smaller than that of the inner pulsator 2 , that is, the resistance torque experienced by the inner sun gear 10 is smaller than the resistance experienced by the planetary carrier 8 . When the planetary gear 9 rotates clockwise, the inner gear sun gear 10 rotates clockwise, and the outer wave wheel connected with the inner gear sun gear 10 also rotates clockwise; The wheel carrier 8 does not rotate or rotates counterclockwise at a low speed.

Assuming that the resistance experienced by the inner pulsator 2 is smaller than that of the outer pulsator 1 , that is, the resistance torque experienced by the planetary carrier 8 is smaller than the resistance experienced by the inner gear sun gear 10 . When the planetary gear 9 rotates clockwise, it drives the planetary carrier 8 to rotate counterclockwise, and the inner wave wheel connected with the planetary carrier also rotates counterclockwise. The resistance received by the outer pulsator 1 is greater than that of the inner pulsator 2, and the inner sun gear 10 does not rotate or rotates clockwise at a low speed.

In the utility model, the pulsator of the washing machine can automatically adjust the rotating speed according to the received clothes and water flow resistance, so as to achieve the purpose of low wear rate, low winding, energy saving, improved cleaning ratio and service life of the washing machine.

Example 2:

The planetary carrier 8 is spoke-shaped, and six planetary gears 9 are evenly distributed on its ends.

Other structures are with embodiment 1.

Claims (2)

1. the double wave wheel washer comprises washtub, impeller, decelerator and motor, it is characterized in that: described impeller comprises interior impeller (2) and outer impeller (1), and outer impeller (1) is petal-shaped and is positioned at impeller (2) periphery; The upper end of interior impeller axle (4) is connecting interior impeller (2), and its lower end is connecting planet carrier (8); External wave wheel shaft (5) is a hollow shaft, and its upper end is connecting outer impeller (1), and its lower end is connecting internal tooth sun gear (10), and interior impeller axle (4) middle part is plugged in the external wave wheel shaft (5); Described planet carrier (8) is discoid, and its end is laid with plural planetary gear (9), and plural planetary gear (9) meshes with internal tooth sun gear (10) and external tooth sun gear (12) respectively; Form decelerator with upper planetary gear (9), internal tooth sun gear (10) and external tooth sun gear (12) for two, wheel shaft (13) other end of external tooth sun gear (12) is connecting motor by tape handler.

2. double wave wheel washer according to claim 1 is characterized in that: described planet carrier (8) is a cruciformity, and its periphery is provided with circular reinforcing ring.

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