CN113089260A

CN113089260A - Washing machine

Info

Publication number: CN113089260A
Application number: CN202110267999.6A
Authority: CN
Inventors: 江艳; 程宁; 胡蓉; 张道鹏
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2021-03-11
Filing date: 2021-03-11
Publication date: 2021-07-09
Anticipated expiration: 2041-03-11
Also published as: CN113089260B

Abstract

The present invention discloses a washing machine, comprising: an inner drum for treating laundry; the transparent fixing plate is arranged on the outer wall of the inner barrel, and a communicating cavity along the height direction of the inner barrel is formed after the transparent fixing plate is matched with the outer wall of the inner barrel, wherein the lower part of the communicating cavity is communicated with the lower part of the inner barrel, and the upper part of the communicating cavity is communicated with the upper part of the inner barrel or is communicated with the outside atmosphere; the color changing plate is arranged in the communicating cavity along the height direction of the inner barrel and is used for changing color after contacting with water so as to display the position of the water level in the barrel, which corresponds to the color changing plate; the image acquisition device is used for acquiring a water level information image on the color changing plate in the communicating cavity through the transparent fixing plate; and the processor is used for processing the water level information image to obtain the water level value in the inner cylinder. After the water level detection mode is improved, the water level measurement result of the washing machine is more accurate, and the structure is simple.

Description

Washing machine

Technical Field

The invention relates to the technical field of water level detection of clothes treatment equipment, in particular to a washing machine.

Background

At present, with the progress of science and technology, the automation level of human life is higher and higher, and daily housework is gradually replaced by machines from manpower. The clothes washing equipment is used as a common household appliance in daily life, and brings great convenience to the life of people. Laundry washing apparatuses are classified according to washing methods, and may be roughly classified into pulsator washing machines and drum washing machines.

In the prior art, a washing machine detects the water level in a washing tub through a capacitive liquid level sensor, wherein the capacitive liquid level sensor has the detection principle of detecting the water pressure in the washing tub, the water pressure pushes a magnetic core in an indirect capacitive liquid level sensor to change the position of the magnetic core in a coil, so that the inductance value is changed, signals with different frequencies are generated through an LC oscillating circuit, and the water level in the washing tub is determined according to the corresponding relation between the frequency signal value and the water level. In the detection process, because the signal output by the indirect capacitance liquid level sensor is in nonlinear change, the input and output signals are stable only under a certain pressure, so that the detection result of the capacitance liquid level sensor is inaccurate, and the water level in the washing barrel cannot be accurately detected. The flow is calculated by setting the flow valve at the water inlet, the flow is influenced by the water pressure of the water for residents, the larger the water pressure is, the more accurate the numerical value calculation is, and under the condition of small water pressure, the deviation of the numerical value is larger.

Disclosure of Invention

In view of this, the present invention discloses a washing machine, which at least solves the problem of inaccurate water level detection of the existing washing machine.

In order to achieve the above object, the invention adopts the following technical scheme:

a first aspect of the present invention discloses a washing machine, including:

an inner drum for treating laundry;

the transparent fixing plate is arranged on the outer wall of the inner barrel, and a communicating cavity along the height direction of the inner barrel is formed after the transparent fixing plate is matched with the outer wall of the inner barrel, wherein the lower part of the communicating cavity is communicated with the lower part of the inner barrel, and the upper part of the communicating cavity is communicated with the upper part of the inner barrel or is communicated with the outside atmosphere;

the color changing plate is arranged in the communicating cavity along the height direction of the inner barrel and is used for changing color after contacting with water so as to display the position, corresponding to the water level in the barrel, of the water level, on the coating plate;

the image acquisition device is used for acquiring a water level information image on the coating plate in the communicating cavity through the transparent fixing plate;

and the processor is used for processing the water level information image to obtain the water level value in the inner cylinder.

Further optionally, the washing machine further comprises: a first filtering device for filtering the waste water and the waste water,

the first filtering device is arranged at the joint of the lower part of the communicating cavity and the lower part of the inner barrel and is used for filtering water in the inner barrel before entering the communicating cavity.

Further optionally, the washing machine further comprises: a second filtering device is arranged on the first filtering device,

the second filtering device is arranged at the joint of the upper part of the communicating cavity and the upper part of the inner barrel and is used for filtering the water in the inner barrel before entering the communicating cavity.

Further optionally, the washing machine further comprises: a one-way flow passage is arranged on the upper surface of the shell,

and two ends of the one-way flow passage are respectively communicated with the upper part of the communicating cavity and the upper part of the inner cylinder, wherein the flow direction of the one-way flow passage adopts one-way communication from the upper part of the communicating cavity to the upper part of the inner cylinder.

Further optionally, the washing machine further comprises: the filter chip component is arranged on the upper portion of the filter chip component,

the filter scrap component is arranged on the inner wall of the inner barrel and used for filtering scrap impurities in the inner barrel.

Further optionally, the transparent fixing plate is arranged corresponding to the filter scrap assembly;

wherein the lower part of the communicating cavity is introduced into the inner cylinder through a water flowing channel of the filter scrap component.

Further optionally, a reserved chamber is formed between the filter chip assembly and the inner wall of the inner cylinder, and is used for being in communication fit with the water flowing channel so as to communicate the communication cavity with the inner cylinder;

the upper part of the reserved chamber is communicated with the upper part of the communicating cavity, and the lower part of the reserved chamber is communicated with the lower part of the communicating cavity.

Further optionally, the first filtering device is disposed at a communication position between a lower portion of the reserved chamber and a lower portion of the communication cavity, and the first filtering device is located inside the reserved chamber.

Further optionally, the washing machine further comprises:

the device comprises a shell, a first fixing piece and a second fixing piece, wherein the shell is provided with an installation cavity with a cavity opening formed above;

the top cover is covered at the cavity opening;

wherein the image acquisition device is arranged on the top cover.

Further optionally, the communication position between the upper part of the communication cavity and the upper part of the inner barrel is higher than or equal to the highest water level scale of the inner barrel; the communication position of the lower part of the communication cavity and the lower part of the inner barrel is lower than or equal to the lowest water level scale of the inner barrel.

Has the advantages that: according to the invention, the washing machine is improved, the water level detection device is additionally arranged beside the inner barrel, the color change function of the coating plate in water is combined with image acquisition, then the color change ratio in the image is analyzed, and the water level value of the inner barrel is obtained.

Drawings

The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings. The drawings described below are merely exemplary embodiments of the present disclosure, and other drawings may be derived by those skilled in the art without inventive effort.

FIG. 1 shows a schematic view of a washing machine according to an embodiment;

fig. 2 shows a partially enlarged view of a washing machine according to an embodiment.

In the figure: 1. a water receiving basin; 2. an inner barrel; 3. a scrap filtering plate; 4. an impeller; 5. a balance ring; 6. a camera; 7. a transparent fixed plate; 8. a one-way flow channel; 9. coating plates; 10. a first filtering device; 11. a motor; 12. an auxiliary line; 13. communicating water in the cavity; 14. water in the inner cylinder.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and "a" and "an" generally include at least two, but do not exclude at least one, unless the context clearly dictates otherwise.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.

The liquid level detection precision of present washing machine is poor, causes the water level to put in too little or too much and all can cause the not good condition of washing effect to put in too much and also can cause the waste of water resource. The improved liquid level detection device has the advantages that the washing machine is improved, the color block ratio is identified by the camera by utilizing the color changing characteristic of the coating when meeting water, the capacity is reflected, the improved liquid level detection device is simple and small in structure and convenient to read, and the overall structure of the washing machine is not influenced too much.

To further illustrate the technical solution of the present invention, the following specific examples are provided as shown in fig. 1-2.

In the present embodiment, there is provided a washing machine including:

an inner drum 2, wherein the inner drum 2 can be used for processing clothes;

the transparent fixing plate 7 is arranged on the outer wall of the inner cylinder 2, and the transparent fixing plate 7 is matched with the outer wall of the inner cylinder 2 to form a communicating cavity along the height direction of the inner cylinder 2, wherein the lower part of the communicating cavity is communicated with the lower part of the inner cylinder 2, and the upper part of the communicating cavity is communicated with the upper part of the inner cylinder 2 or is communicated with the outside atmosphere;

the color changing plate 9 is arranged in the communicating cavity along the height direction of the inner barrel 2, and is used for changing color after contacting with water so as to display the position of the water level in the barrel, which corresponds to the color changing plate 9;

the image acquisition device is used for acquiring a water level information image on the color changing plate 9 in the communicating cavity through the transparent fixing plate 7;

and the processor is used for processing the water level information image to obtain the water level value in the inner barrel 2.

In this embodiment, after the transparent fixing plate 7 and the outer wall of the inner cylinder 2 form a communication cavity, the upper part and the lower part of the combined communication cavity are both communicated with the inner cylinder 2, or the upper part is directly communicated with the external atmosphere, so that the communication cavity and the inner cylinder 2 cooperate to introduce the water in the inner cylinder 2 into the communication cavity by using the principle of a communicating vessel. After the water 13 in the communicating cavity contacts with the color changing plate 9, the color changes (the primary color is recovered after the water is separated), and finally, the proportion of the color changing plate 9 which changes the color corresponding to the color changing plate 9 on the whole is calculated to obtain the water level height in the inner cylinder 2. This mode can truly reflect the actual water level in inner tube 2, has avoided because of adding the inaccurate problem that causes the measuring result of sensing when establishing electric capacity level sensor, also avoids adopting the measuring error that the flow valve number leads to simultaneously. In addition, the detection mode is simpler than the existing mode.

The color changing plate 9 is embedded into the transparent fixing plate 7 or the inner cylinder 2 through the support piece, and the transparent fixing plate 7 is fixed with the outer wall of the inner cylinder 2 and can also play a role in fixing the color changing plate 9. It should be noted that the color changing plate 9 in this embodiment may be a paint plate, and when a paint plate is used, a pressure sensitive material is sprayed thereon. The pressure sensitive paint pressure measuring technology is non-contact optical pressure measuring technology, and has the features of less interference to flow field, high spatial resolution, etc.

In some optional manners, the washing machine further includes: a first filter device 10. The first filtering device 10 is arranged at the joint of the lower part of the communicating cavity and the lower part of the inner barrel 2 and is used for filtering water in the inner barrel 2 before entering the communicating cavity. The filtering device can filter the water in the inner barrel 2 before entering the communicating cavity, and the influence of impurities in the inner barrel 2 entering the communicating cavity along with the water on a measuring result is avoided.

Further, the washing machine further includes: a second filter means (not shown). The second filtering device is arranged at the joint of the upper part of the communicating cavity and the upper part of the inner barrel 2 and is used for filtering the water 14 in the inner barrel before entering the communicating cavity. When the water level in the inner cylinder 2 is high (exceeds the upper part of the communication cavity), the water 14 in the inner cylinder flows into the communication cavity from the upper part of the communication cavity, and at the moment, impurities can be brought into the communication cavity along with the water in the inner cylinder 2, which also causes the problems of dirty blockage of the communication cavity, reduction of the measurement precision and the like. The washing machine can prevent impurities in water from being brought in from the upper part of the communicating cavity by additionally arranging the second filtering device.

In another alternative embodiment, the washing machine further comprises: a one-way flow passage 8. The one-way flow passage 8 is used for realizing one-way communication from the upper part of the communication cavity to the upper part of the inner cylinder 2. The mode can also avoid impurities in the water from being brought in from the upper part of the communication cavity. It should be noted that the one-way flow passage 8 is not limited to a certain structure, as long as it can satisfy that water only can flow from the chamber to the inner cylinder 2, and water cannot enter the communicating cavity from the inner cylinder 2, and the one-way flow passage 8 can be a one-way valve in a structural form, and the structure is arranged on the inner cylinder 2.

In some optional manners, the washing machine further includes: and a filter scrap component. The filter scrap component is arranged on the inner wall of the inner barrel 2 and used for filtering scrap impurities in the inner barrel 2. Specifically, a plurality of filter plates 3 can be arranged along the height direction of the inner barrel 2, and each filter plate 3 is provided with a water flowing channel. Due to the arrangement of the structure, a corresponding mounting structure needs to be additionally arranged on the wall of the inner barrel 2, and the transparent fixing plate 7 and the filter chip component are correspondingly arranged by utilizing the installation of the filter chip component when the transparent fixing plate 7 is additionally arranged in order to avoid the excessive mounting position on the inner barrel 2. Preferably, the lower part of the communication chamber opens into the inner drum 2 through the water flow passage of the filter dust assembly.

Further, a reserved cavity is formed between the filter chip assembly and the inner wall of the inner cylinder 2 and is used for being communicated and matched with the water flowing channel so as to communicate the communicating cavity with the inner cylinder 2. The upper part of the reserved chamber is communicated with the upper part of the communicating cavity, and the lower part of the reserved chamber is communicated with the lower part of the communicating cavity. This mode can realize the hidden deformation to the linker structure that forms with the cooperation of intercommunication chamber and reservation cavity for the outward appearance is more pleasing to the eye, and the practicality is better. In the present embodiment, the first filtering device 10 is disposed at the communication position between the lower part of the reserved chamber and the lower part of the communication cavity, and the first filtering device 10 is located inside the reserved chamber.

In some optional manners, the washing machine further includes: the device comprises a shell, a first fixing piece and a second fixing piece, wherein the shell is provided with an installation cavity with a cavity opening formed above; the impeller 4 is arranged at the bottom of the inner cylinder 2; a water receiving basin 1 arranged below the inner barrel 2; a balance ring 5 positioned at the opening of the inner cylinder 2; a motor 11 for driving the impeller at the lower part of the inner cylinder 2 to rotate; and the top cover is arranged at the cavity opening. Preferably, the image acquisition device is disposed on the top cover. The image acquisition device can be a camera 6 additionally arranged on the top cover, and can acquire images of the color-changing plate 9 in the communicating cavity in real time or at regular time.

The communication position of the upper part of the communication cavity and the upper part of the inner cylinder 2 is higher than or equal to the highest water level scale of the inner cylinder 2; the communication position of the lower part of the communication cavity and the lower part of the inner cylinder 2 is lower than or equal to the lowest water level scale of the inner cylinder 2. Specifically, a cavity (communicating cavity) is formed between the transparent fixed plate 7 and the outer wall of the inner cylinder 2, a u-shaped pipe is formed by a passage structure formed by the water flow passage of the chip filtering plate 3, the upper part of the reserved cavity, the upper part of the communicating cavity, the lower part of the communicating cavity, the filtering device, the lower part of the reserved cavity and the water flow passage, and the water in the communicating cavity is level with the water in the inner cylinder 2 according to the principle of a communicating device. The lowest end of the transparent fixed plate 7 is lower than the minimum water capacity set by a program, and the highest end is higher than the maximum water capacity set by the program; correspondingly, the lowest end of the color changing plate 9 is lower than the minimum water capacity set by the program, the highest end of the color changing plate is higher than the maximum water capacity set by the program, and a coating layer of the color changing plate 9 meets a water color changing layer, so that obvious color difference can occur below the water surface, and the image processing by the camera is facilitated.

The invention is further explained in connection with a situation of actual water filling of a washing machine, as follows.

According to the program setting, the water injection quantity needs 6L water, and the image of the corresponding 6L water quantity in the database is called out. As shown in fig. 2, three auxiliary lines 12 are an upper limit, a lower limit, and a water line on the color-changing plate 9 in the image recognized by the camera, respectively. At the moment, the color of the area between the water level line and the upper limit is the original color of the coating, and the color of the area between the water level line and the lower limit is the color of the coating after the coating changes color when meeting water. And stopping water injection when the ratio of the identified color changing plate below the water level line to the whole color changing plate satisfies the image of the corresponding water level value when the ratio satisfies 6L, namely the identified image is consistent with the image of the database.

In addition, the ratio of the color changing plate below the corresponding water level line in the acquired image of the real-time water level to the whole color changing plate can be directly calculated, and when the ratio meets the preset ratio value when the ratio is 6L, water injection is stopped.

The communication chamber of the inner cylinder 2 may be set to a default position when corresponding to the camera, and the inner cylinder 2 may be stopped at the default position by default during the water addition process.

Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that the present disclosure is not limited to the precise arrangements, instrumentalities, or instrumentalities described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. A washing machine, characterized in that the washing machine comprises:

an inner drum for treating laundry;

the image acquisition device is used for acquiring a water level information image on the color changing plate in the communicating cavity through the transparent fixing plate;

2. The washing machine as claimed in claim 1, further comprising: a first filtering device for filtering the waste water and the waste water,

3. The washing machine as claimed in claim 2, further comprising: a one-way flow passage is arranged on the upper surface of the shell,

4. The washing machine as claimed in claim 2, further comprising: a second filtering device is arranged on the first filtering device,

5. The washing machine as claimed in claim 3 or 4, further comprising: the filter chip component is arranged on the upper portion of the filter chip component,

6. The washing machine as claimed in claim 5, wherein the transparent fixing plate is provided corresponding to the lint filter assembly;

7. The washing machine as claimed in claim 6, wherein a reserved chamber is formed between the filter assembly and the inner wall of the inner drum for communicating with the water flow channel to communicate the communication chamber with the inner drum;

8. The washing machine as claimed in claim 7, wherein the first filtering means is provided at a communication of a lower portion of a reserve chamber and a lower portion of the communication chamber, and the first filtering means is located inside the reserve chamber.

9. The washing machine as claimed in claim 1, further comprising:

the top cover is covered at the cavity opening;

wherein the image acquisition device is arranged on the top cover.

10. The washing machine as claimed in claim 1, wherein the communication position of the upper part of the communication chamber and the upper part of the inner tub is higher than or equal to the highest water level scale of the inner tub; the communication position of the lower part of the communication cavity and the lower part of the inner barrel is lower than or equal to the lowest water level scale of the inner barrel.