Washing machine and washing control method thereof

Abstract

The present invention discloses a washing machine and a washing control method thereof. During the water inlet stage, when the water level in a water filling box is greater than or equal to a first set water level, the water filling box fills water into the washing machine's inner drum. The washing machine includes an inner drum and a water filling box, and the water filling box includes a water filling box outlet. The water filling box outlet is connected to the water inlet of the inner drum, and a filter membrane is disposed at the water filling box outlet. The washing machine and washing control method provided by the present invention further include a water filling box to ensure constant water inlet pressure in the inner drum, allowing the filter membrane to fully function and enhance the washing effect.

Description

Technical Field

[0001] The present invention relates to the field of washing machine control, and in particular to a washing machine and a washing control method thereof. Background Art

[0002] With the upgrading of consumption and the improvement of users' quality of life, more and more household appliances of all sizes are needed in families. Washing machines are an indispensable household appliance in contemporary families, and washing is the core function of washing machines. However, the washing programs of most washing machines on the market are aimed at the most common cotton, linen, silk, wool and other related clothing fabrics in life. There are no washing programs for high-end clothing fabrics such as silk. Although some washing machines have silk washing programs, they simply reduce the time the drum rotates to distinguish it from the washing methods of ordinary fabrics. Therefore, no unique washing method for silk has been formed.

[0003] Some existing washing machines use reverse osmosis membranes to filter water fed into the inner drum to remove calcium and magnesium ions from hard water. However, when the water supply is unstable, the water pressure fluctuates or even stops, resulting in poor performance of the reverse osmosis membranes, making them ineffective in filtering calcium and magnesium ions from the hard water. This leads to inefficient use of the non-surfactants in the detergent, resulting in poor cleaning of silk, severe wear, and the hardening of the fabric caused by residual calcium and magnesium ions. Consequently, existing washing machines often suffer from poor cleaning efficiency, severe deformation, and severe wear of silk fabrics during the silk fabric washing process. Summary of the Invention

[0004] The present invention aims to at least partially address one of the problems in the related art. To this end, the present invention provides a washing machine and a washing control method thereof, wherein a water filling box is added to ensure a constant water inlet pressure in the inner drum, thereby enabling the filter membrane to fully function and enhancing the washing effect.

[0005] In order to achieve the above-mentioned object, the present application adopts the following technical solution: a washing control method of a washing machine, in which, during the water inlet stage, when the water level in the water filling box is greater than or equal to a first set water level, the water filling box fills water into the inner drum of the washing machine;

[0006] The washing machine includes an inner drum and a water filling box, the water filling box includes a water filling box outlet, the water filling box outlet is connected to the water inlet of the inner drum, and a filter membrane is provided at the water filling box outlet.

[0007] Furthermore, during the water inlet stage, if the water level in the water filling box is greater than or equal to the second set water level, the filling into the water filling box is stopped, and the water filling box continues to fill water into the inner drum of the washing machine; if the water level in the water filling box is greater than the first set water level and less than the second set water level, the water filling box continues to fill and discharge water at the same time; the height of the second set water level is greater than the height of the first set water level.

[0008] Furthermore, the filter membrane is a reverse osmosis membrane or a nanofiltration membrane.

[0009] Furthermore, a liquid level detector and a pump are provided inside the water filling box; the height of the pump is less than or equal to the height of the first set water level.

[0010] Furthermore, the inner wall of the inner tube is provided with lifting ribs.

[0011] Furthermore, the laundry is made of silk fabrics; the washing machine also includes weighing the silk fabrics in the inner drum before the water filling stage; and setting the inner drum speed in the washing stage according to the weighing result, and the inner drum speed ensures that the silk fabrics adhere to the inner wall of the inner drum and do not fall off during the washing stage.

[0012] Furthermore, during the washing phase, the inner drum rotates forward and reverse alternately.

[0013] Furthermore, the acceleration of the inner drum rotation during the washing phase is less than or equal to 6 rpm / s.

[0014] Furthermore, the rotation speed of the inner drum during the washing stage is 90 rpm-110 rpm.

[0015] A washing machine includes an inner drum and a water filling box, wherein the water filling box includes a water filling box outlet, the water filling box outlet is connected to the water inlet of the inner drum, and a filter membrane is provided at the water filling box outlet. When the water level in the water filling box is greater than or equal to a first set water level, the water filling box fills water into the inner drum of the washing machine.

[0016] The above technical solution provided by the embodiment of the present application has the following advantages compared with the existing technology: the present application adds a water filling box at the water inlet position of the inner drum. When the water level in the water filling box reaches the first set water level, the water filling box will inject water into the inner drum of the washing machine. The water filling method in the present application can ensure that the water pressure entering the inner drum is constant, so that the filter membrane can play the maximum role and enhance the washing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0019] In the attached figure:

[0020] Figure 1 This is a schematic diagram of the structure of the water filling box in this application;

[0021] Figure 2 This is a schematic diagram of the silk fabric load operation state in this application;

[0022] Figure 3 This is a flow chart of the washing control method in this application;

[0023] Figure numbers: 1. Water filling box outlet; 2. Liquid level detector; 21. Liquid level probe; 3. Pump; 4. Water filling box inlet; 5. Filter membrane; 6. Display panel; 7. Silk fabric; 8. Lifting rib. DETAILED DESCRIPTION

[0024] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings and are constructed and operated in specific directions. They are only for the convenience of describing the technical solution and do not indicate that the mechanisms or components referred to must have specific directions. Therefore, they should not be understood as limiting the present invention.

[0025] It should also be noted that, unless otherwise clearly specified and limited, terms such as "installed", "connected", "connected", "fixed", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intervening elements. The terms "first", "second", "third", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0026] In the following description, specific details such as particular system structures and techniques are provided for purposes of illustration, not limitation, to facilitate a thorough understanding of the embodiments of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, mechanisms, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0027] Please see the attached Figure 1-2 The present application provides a washing control method for a washing machine. In the water inlet stage, when the water level in the water filling box is greater than or equal to a first set water level, the water filling box fills water into the inner drum of the washing machine; wherein, the washing machine includes an inner drum and a water filling box, the water filling box outlet 1 is connected to the water inlet of the inner drum, the water filling box inlet 4 is connected to an external water source, and the water filling box outlet 1 is provided with a filter membrane 5.

[0028] This application adds a water filling box at the water inlet position of the inner drum. When the water level in the water filling box reaches a first set water level, the water filling box will fill water into the inner drum of the washing machine. The water filling method in this application can ensure that the water pressure entering the inner drum is constant, so that the filter membrane 5 can play its maximum role and enhance the washing effect.

[0029] Example 1

[0030] The present application provides a washing control method for a washing machine, wherein the washing machine includes an inner drum and a water filling box, the water filling box outlet 1 is connected to the water inlet of the inner drum, the water filling box inlet 4 is connected to an external water source, and the water filling box outlet 1 is provided with a filter membrane 5.

[0031] During the water inlet stage, water is first added to the water filling box until the water level in the water filling box is greater than or equal to the first set water level L1, and then the water filling box fills water into the inner drum of the washing machine; at the same time, during the water inlet stage, if the water level in the water filling box is greater than or equal to the second set water level L2, filling into the water filling box is stopped, and the water filling box keeps filling water into the inner drum of the washing machine; if the water level in the water filling box is greater than the first set water level L1 and less than the second set water level L2, the water filling box keeps filling and discharging water at the same time; if the water level in the water filling box is less than the first set water level L1, the water filling box keeps filling water and stops filling water into the inner drum of the washing machine until the water level is greater than or equal to the first set water level L1, and water is filled into the inner drum; wherein, the height of the second set water level L2 is greater than the height of the first set water level L1.

[0032] The filter membrane 5 of the present application is a filter membrane 5 such as a reverse osmosis membrane or a nanofiltration membrane 5 that can filter calcium and magnesium ions in water. The filter membrane 5 has a relatively high requirement for the water pressure passing through it. If the water pressure is unstable, it cannot fully exert its filtering function for calcium and magnesium ions in water. In the present application, a water injection box is added, and two set water levels are creatively set to ensure that the water level in the water injection box is between the first set water level and the second set water level before the inner cylinder is filled with water. In this way, it can be ensured that the water pressure injected into the inner cylinder is constant within a certain set range. Under this water pressure, the filter membrane 5 can fully exert its performance, ensuring that the hard water in the water injection box connected to the external water source becomes soft water after passing through the filter membrane 5 and enters the inner cylinder.

[0033] During the water inlet stage, it is also necessary to detect whether the water level in the inner drum reaches the washing water level. If it reaches the washing water level, stop filling water into the inner drum; if it does not reach the washing water level, the water filling box continues to fill water into the inner drum until it reaches the washing water level and ends the water inlet stage.

[0034] like Figure 1 As shown, the water filling box of this application is internally provided with a liquid level detector 2 and a pump 3. The pump in this application can be a medium-high pressure water pump, ensuring that the output pressure value of the water pump can make the water in the water filling box pass through the filter membrane at a certain pressure, ensuring that the filter membrane can function. The pump 3 is used to ensure that the water flow injected into the inner drum has a certain pressure. On the basis of limiting the water level in the water filling box to between the first set water level and the second water level to inject water into the inner drum, the pump 3 is added for injecting water into the inner drum. The combination of the two can ensure that the water pressure injected into the inner drum is constant, so that the filter membrane 5 can function to the maximum extent, and ultimately obtain soft water, preparing for the subsequent washing stage.

[0035] To ensure the normal operation of the pump 3, the present application specifies that the height of the pump 3 is less than or equal to the height of the first set water level. That is, during the water filling phase, the pump 3 is completely immersed in water and operates. The pump 3 in the present application can be a water pump 3 of any structure in the prior art.

[0036] The liquid level detector 2 of the present application can be provided with a plurality of liquid level probes 21, and the plurality of liquid level probes 21 are evenly distributed at various positions in the water filling box, for detecting the water levels at corresponding positions, and obtaining the average water level in the water filling box by averaging the plurality of water levels.

[0037] The filter membrane in this application is a consumable item. After a period of use, ion deposits will form and it needs to be replaced regularly. The filter membrane in this application is not just a layer of membrane, but has a certain thickness, for example, between 5-7 cm, to ensure that the hard water in the water injection box passes through the nanofiltration membrane at a certain pressure under the action of the pump to become soft water.

[0038] Example 2

[0039] A washing machine control method for washing silk fabrics. In this embodiment, the washing machine includes an inner drum and a water filling box. The water filling box outlet 1 is connected to the inner drum's water inlet, and the water filling box inlet 4 is connected to an external water source. A filter membrane 5 is provided on the water filling box outlet 1. The washing machine is also provided with a weighing assembly for weighing the silk fabric in the inner drum.

[0040] When silk fabric is placed in the inner drum, the weighing assembly weighs the fabric and sets the inner drum speed for the washing phase based on the weighing result. The inner drum speed ensures that the silk fabric adheres to the inner wall of the inner drum without falling off or being excessively close to the inner wall. After obtaining the speed, the water inlet phase begins. During the water inlet phase, if the water level in the water inlet box is greater than or equal to the second set water level L2, water inlet to the water inlet box stops, and the water inlet box continues to fill the inner drum of the washing machine. If the water level in the water inlet box is greater than the first set water level L1 and less than the second set water level L2, the water inlet box continues to both fill and discharge water. If the water level in the water inlet box is less than the first set water level L1, the water inlet box continues to fill and stops filling the inner drum of the washing machine until the water level is greater than or equal to the first set water level L1, and water is then added to the inner drum. The height of the second set water level L2 is greater than the height of the first set water level L1.

[0041] The present application sets the rotation speed of the inner drum to 90rpm-110rpm to prevent excessive rotation speed from causing excessive agitation between the silk fabric 7 and the water flow during washing, thereby increasing the wear of the silk fabric 7. The present application sets the acceleration of the inner drum rotation to be less than or equal to 6rpm / s during the washing phase to prevent excessive mechanical force at the moment the inner drum starts to rotate, thereby causing irreversible wear to the silk fabric 7. The specific rotation speed needs to be determined based on the weighing results. When the weight of the silk fabric 7 is large, the rotation speed and acceleration can be appropriately increased. When the weight of the silk fabric 7 is small, the rotation speed and acceleration can be appropriately reduced.

[0042] The inner tube of this application is provided with lifting ribs 8, such as Figure 2 As shown, the lifting ribs 8 are evenly arranged in the inner wall of the inner drum. During the washing stage, the silk fabric 7 is suspended on the lifting ribs 8 and rotates, which improves the cleaning efficiency of the silk fabric 7. The washing machine of the present application is also provided with a display panel on the outside for setting function buttons and their corresponding options.

[0043] During the washing phase of the present application, the inner drum rotates alternately forward and reverse, so that every surface of the silk fabric can be washed by the water flow, which can improve the cleaning effect. In the present application, the forward and reverse rotation of the inner drum are of the same duration, and the pause time between forward and reverse rotation is short, usually not exceeding 20% ​​of the forward or reverse rotation duration; and the gap between forward and reverse rotation ensures that the clothes adhere to the inner wall of the inner drum and do not fall off. The pause time can prevent the motor from rotating continuously with excessive load, but it is also necessary to ensure that the time is not too long to avoid wrinkles caused by the silk falling from the inner wall and accumulating over time.

[0044] Example 3

[0045] like Figure 3 As shown, a washing control method for silk washing includes the following process:

[0046] Turn on the washing machine and select the silk washing program;

[0047] The weighing assembly in the washing machine is used to weigh the silk fabric in the inner drum and set the inner drum speed during the washing phase based on the weighing result. The inner drum speed ensures that the silk fabric adheres to the inner wall of the inner drum without falling off, nor does it cling too tightly to the inner wall of the inner drum.

[0048] During the water inlet stage, the water level in the water injection box is determined based on the monitoring results of the liquid level detector 2. If the water level in the water injection box is greater than or equal to the second set water level L2, injection into the water injection box is stopped, and the water injection box continues to inject water into the washing machine drum. If the water level in the water injection box is greater than the first set water level L1 and less than the second set water level L2, the water injection box continues to inlet and outlet water at the same time. If the water level in the water injection box is less than the first set water level L1, the water injection box continues to inlet water and stops injecting water into the washing machine drum until the water level is greater than or equal to the first set water level L1 and water is injected into the drum. During the water inlet stage, the pump 3 located in the water injection box in this application is used to inject water into the drum. This application adds a pump 3 for injecting water into the drum, based on limiting the water level in the water injection box to between the first set water level and the second water level. The combination of the two can ensure that the water pressure injected into the drum is constant, so that the filter membrane 5 can play its role to the maximum extent, and finally obtain soft water, preparing for the subsequent washing stage.

[0049] Determine whether the water level in the inner drum has reached the washing water level. If so, stop filling the inner drum with water. If not, continue the water filling process until it reaches the washing water level.

[0050] During the washing phase, the inner drum rotates forward and reverse at a set speed, so that every surface of the silk fabric 7 is washed by the water flow, which can improve the cleaning effect. In this application, the forward and reverse rotation durations of the inner drum are the same, and the pause time between forward and reverse rotation is short, usually not exceeding 20% ​​of the forward or reverse rotation duration; and the gap between forward and reverse rotation ensures that the clothes adhere to the inner wall of the inner drum and do not fall off. The pause time can prevent the motor from rotating continuously and causing excessive load, and it is also necessary to ensure that the time is not too long to avoid the silk from falling from the inner wall and accumulating during the time, causing wrinkles. This application sets the rotation speed of the inner drum to 90rpm-110rpm to prevent excessive rotation speed from causing excessive agitation between the silk fabric 7 and the water flow during washing, thereby increasing the wear of the silk fabric 7. This application sets the acceleration of the inner drum rotation during the washing phase to be less than or equal to 6rpm / s to prevent excessive mechanical force at the moment the inner drum starts to rotate, causing irreversible wear to the silk fabric 7. The specific rotation speed needs to be determined according to the weighing result. When the weight of the silk fabric 7 is heavy, the rotation speed and acceleration can be appropriately increased. When the weight of the silk fabric 7 is light, the rotation speed and acceleration can be appropriately reduced.

[0051] During the rinse phase, the speed and acceleration of the inner drum remain the same as those during the wash phase.

[0052] Enter the dehydration stage, wash is completed, and turn off the washing machine.

[0053] The present application also provides a washing machine compatible with the above-mentioned control method. The structure and control method of the washing machine are as shown above and will not be introduced in detail here.

[0054] It is understandable that the above embodiments only express the preferred implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can be made, all of which fall within the scope of protection of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should fall within the scope of coverage of the claims of the present invention.

Claims

1. A washing control method for a washing machine, characterized in that: In the water filling stage, when the water level in the water filling box is greater than or equal to the first set water level, the water filling box fills water into the inner drum of the washing machine; The washing machine includes an inner drum and a water injection box, the water injection box includes a water injection box outlet, the water injection box outlet is connected to the water inlet of the inner drum, and a filter membrane is provided at the water injection box outlet; the filter membrane is a reverse osmosis membrane or a nanofiltration membrane; During the water inlet stage, if the water level in the water filling box is greater than or equal to the second set water level, filling into the water filling box is stopped, and the water filling box keeps filling water into the inner drum of the washing machine; if the water level in the water filling box is greater than the first set water level and less than the second set water level, the water filling box keeps filling and discharging water at the same time; if the water level in the water filling box is less than the first set water level, the water filling box keeps filling water and stops filling water into the inner drum of the washing machine until the water level is greater than or equal to the first set water level, and water is filled into the inner drum; the height of the second set water level is greater than the height of the first set water level; a liquid level detector and a pump are provided inside the water filling box; the height of the pump is less than or equal to the height of the first set water level.

2. The washing control method of a washing machine according to claim 1, characterized in that: The inner wall of the inner cylinder is provided with lifting ribs.

3. The washing control method of a washing machine according to claim 1, characterized in that: The laundry is made of silk fabrics. Before the water filling stage, the washing machine also includes weighing the silk fabrics in the inner drum. The inner drum speed during the washing stage is set according to the weighing result, and the inner drum speed ensures that the silk fabrics adhere to the inner wall of the inner drum during the washing stage and do not fall off.

4. The washing control method of a washing machine according to claim 3, characterized in that: During the washing phase, the inner drum rotates alternately forward and reverse.

5. The washing control method of a washing machine according to claim 3, characterized in that: During the washing phase, the acceleration of the inner drum rotation is less than or equal to 6 rpm / s.

6. The washing control method of a washing machine according to claim 3, characterized in that: The inner drum rotates at a speed of 90rpm-110rpm during the washing phase.

7. A washing machine, characterized in that: The washing machine is constructed by a process of injecting water into the water tank, wherein the water level in the water injection box is greater than or equal to a first set water level, and the water injection box injects water into the washing machine inner drum. The washing machine is constructed by injecting water into the water tank, wherein the water level in the water injection box is greater than or equal to a second set water level, and the injection into the water injection box is stopped, and the water injection box keeps injecting water into the washing machine inner drum. If the water level in the water injection box is greater than the first set water level and less than the second set water level, the water injection box keeps inflowing and outflowing water at the same time. If the water level in the water injection box is less than the first set water level, the water injection box keeps inflowing water and stops injecting water into the washing machine inner drum until the water level is greater than or equal to the first set water level and water is injected into the inner drum. The height of the second set water level is greater than the height of the first set water level. A liquid level detector and a pump are provided inside the water injection box. The height of the pump is less than or equal to the height of the first set water level.

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