A dishwasher and a control method thereof

Abstract

The application discloses a dishwasher and a control method thereof. The dishwasher comprises a dishwasher body with an inner cavity, a spray arm assembly arranged in the inner cavity, and a booster pump arranged on a water inlet pipeline of the spray arm assembly. The dishwasher further comprises an oxygen sensor arranged in the inner cavity and a visual sensor arranged in the inner cavity and used for acquiring the state of the oxygen sensor. The water pressure, the water flow and the rotating speed of the exhaust fan of the spray arm assembly are controlled by detecting the state of the oxygen sensor through the visual sensor, so that the situation that the liquid column sprayed by the spray arm assembly directly sprays to the oxygen sensor or the situation that the bubbles generated by the cleaning liquid are blocked in the detection port of the oxygen sensor are reduced during the cleaning process, the humidity detection effect of the oxygen sensor is effectively improved, the cleaning degree in the dishwasher is improved, and the dishwasher has the advantages of simple structure and convenient use.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of kitchen appliances, in particular to a dishwasher and a control method thereof. BACKGROUND

[0002] At present, the household dishwasher has become a utensil cleaning tool for people to cook. In the process of cleaning utensils, if the user wants to observe the cleaning condition of the utensils, the user must open the door body of the dishwasher to check, which brings many inconveniences to the user. With the application of Internet technology and intelligent technology, automatic control or remote monitoring can be realized.

[0003] In the existing product, the oxygen sensor is arranged in the inner cavity of the dishwasher. However, during the cleaning process, the liquid column sprayed by the spray arm may be directly sprayed to the oxygen sensor, or the bubbles generated by the cleaning liquid are blocked in the detection port of the oxygen sensor, thereby affecting the humidity detection effect of the oxygen sensor, making the internal cleaning of the dishwasher not thorough and easy to produce odor, and resulting in poor user experience. SUMMARY

[0004] The present application aims to at least solve one of the problems existing in the prior art, and provides a dishwasher and a control method thereof.

[0005] A dishwasher comprises a dishwasher body having an inner cavity, a spray arm assembly arranged in the inner cavity, and a booster pump arranged on a water inlet pipeline of the spray arm assembly, and further comprises:

[0006] an oxygen sensor arranged in the inner cavity;

[0007] a visual sensor arranged in the inner cavity, the visual sensor being configured to acquire the state of the oxygen sensor.

[0008] Further, the oxygen sensor is arranged at the top of the inner cavity.

[0009] Further, the visual sensor is arranged beside the oxygen sensor.

[0010] Further, an outer cover is arranged in the inner cavity between the spray arm assembly and the visual sensor, the outer cover being configured to prevent the water sprayed by the spray arm assembly from being directly sprayed to the visual sensor.

[0011] Further, the oxygen sensor is arranged in the outer cover, and the outer cover has an opening in communication with the inner cavity.

[0012] Further, the outer cover is in the shape of "L" or arc.

[0013] Further, the outer cover is made of transparent material.

[0014] Further, an exhaust passage is arranged on the inner cavity and is communicated with the area where the oxygen sensor is located, and an exhaust fan is arranged in the exhaust passage to exhaust air in the inner cavity into the exhaust passage.

[0015] A control method of the dishwasher as described above, comprising the following steps:

[0016] S1: starting the dishwasher body;

[0017] S2: detecting the humidity change of the dishwasher body in the cleaning process by the oxygen sensor;

[0018] S3: acquiring the real-time state of the oxygen sensor by the visual sensor;

[0019] S4: controlling the water pressure and flow of the spray arm assembly and the rotating speed of the exhaust fan according to the real-time state of the oxygen sensor acquired by the visual sensor.

[0020] Further, in step S3, the method for acquiring the real-time state of the oxygen sensor by the visual sensor specifically comprises: collecting image data of the oxygen sensor by the visual sensor and performing image feature extraction, analyzing the image data through the extracted image features to obtain the real-time state of the oxygen sensor.

[0021] Further, in step S4, the specific control method is:

[0022] whether the liquid column sprayed by the spray arm assembly in the cleaning process directly sprays the oxygen sensor, if yes, reducing the voltage of the booster pump to reduce the water pressure and flow of the spray arm assembly, if not, maintaining the cleaning working state;

[0023] whether the bubbles generated by the cleaning liquid are blocked in the detection port of the oxygen sensor, if yes, increasing the current of the exhaust fan to increase the rotating speed of the exhaust fan, if not, maintaining the cleaning working state.

[0024] Compared with the prior art, the present application has at least the following beneficial effects:

[0025] The present application controls the water pressure and flow of the spray arm assembly and the rotating speed of the exhaust fan by detecting the state of the oxygen sensor through the visual sensor, thereby reducing the situation that the liquid column sprayed by the spray arm assembly directly sprays the oxygen sensor or the situation that the bubbles generated by the cleaning liquid are blocked in the detection port of the oxygen sensor, effectively improving the humidity detection effect of the oxygen sensor, improving the cleaning degree of the dishwasher, and the structure is simple and convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the dishwasher of the present application.

[0027] Figure 2 A front view of an outer cover of a dishwasher according to the present application;

[0028] Figure 3 A left view of an outer cover of a dishwasher according to the present application;

[0029] Figure 4 A flowchart of a control method of a dishwasher according to the present application. DETAILED DESCRIPTION

[0030] In order to enable persons skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by persons skilled in the art without creative labor should belong to the technical solution range claimed by the present application.

[0031] As shown in Figures 1-4 A dishwasher, comprising a dishwasher body with an inner cavity 1, a spray arm assembly 11 is arranged in the inner cavity 1, a booster pump 15 is arranged on the water inlet pipeline of the spray arm assembly, the dishwasher body further comprises a water inlet pipeline 12 and a water outlet pipeline 13, a water inlet valve 14 is arranged on the water inlet pipeline 12, a water outlet valve 16 and a water outlet pump 17 are arranged on the water outlet pipeline 13, the spray arm assembly 11 comprises a spray arm 110 and a plurality of spray nozzles 111 uniformly distributed on the spray arm 110, the water inlet pipeline of the spray arm 110 is in communication with the water inlet pipeline 12, and further comprising:

[0032] An oxygen sensor 2 arranged in the inner cavity 1;

[0033] A visual sensor 3 arranged in the inner cavity 1, the visual sensor 3 is used to acquire the state of the oxygen sensor 2, the water pressure, the water flow of the spray arm assembly 11 and the rotating speed of the exhaust fan 6 are controlled by detecting the state of the oxygen sensor 2 through the visual sensor 3, so as to reduce the situation that the liquid column sprayed by the spray arm assembly 11 directly sprays the oxygen sensor 2 or the situation that the bubbles generated by the cleaning liquid block the detection port of the oxygen sensor 2 in the cleaning process, effectively improve the humidity detection effect of the oxygen sensor 2, improve the cleaning degree of the dishwasher, and the structure is simple and convenient to use.

[0034] The oxygen sensor 2 is arranged at the top of the inner cavity 1, by arranging the oxygen sensor 2 at the top of the inner cavity 1, the risk that the detection port of the oxygen sensor 2 is blocked by the spray or bubbles of the spray arm assembly 11 can be reduced.

[0035] The visual sensor 3 is arranged beside the oxygen sensor 2 to confirm whether the liquid column sprayed by the spray arm 110 is directly sprayed to the oxygen sensor 2 or the bubbles generated by the cleaning liquid are blocked in the detection port of the oxygen sensor 2.

[0036] The outer cover 4 is arranged between the spray arm assembly 11 and the visual sensor 3 in the inner cavity 1 to prevent the water sprayed by the spray arm assembly 11 from being directly sprayed to the visual sensor 3, so that the water sprayed by the spray arm assembly 11 is prevented from being directly sprayed to the visual sensor 3 and the bubbles generated by the cleaning liquid are prevented from affecting the visual sensor 3.

[0037] The oxygen sensor 2 is arranged in the outer cover 4, and the outer cover 4 has an opening communicating with the inner cavity 1, so that the oxygen sensor 2 can detect the humidity change of the inner cavity 1.

[0038] The outer cover 4 is in the shape of "L" or arc.

[0039] The outer cover 4 is made of transparent material, so that the visual sensor 3 can obtain the state of the oxygen sensor 2.

[0040] The inner cavity 1 is provided with an exhaust passage 5 communicating with the area where the oxygen sensor 2 is arranged, and the exhaust fan 6 is arranged in the exhaust passage 5 to exhaust the air in the inner cavity 1 into the exhaust passage 5, so that when the visual sensor 3 detects that the bubbles generated by the cleaning liquid are blocked in the detection port of the oxygen sensor 2, the current of the exhaust fan is controlled to be increased to improve the exhaust negative pressure, which is helpful to eliminate the bubbles adhered to the detection port of the oxygen sensor.

[0041] A control method of the dishwasher, comprising the following steps:

[0042] S1: starting the dishwasher body;

[0043] S2: detecting the humidity change of the dishwasher body in the cleaning process by the oxygen sensor 2;

[0044] S3: obtaining the real-time state of the oxygen sensor 2 by the visual sensor 3;

[0045] S4: controlling the water pressure, water flow of the spray arm assembly 11 and the rotating speed of the exhaust fan 6 according to the real-time state of the oxygen sensor 2 obtained by the visual sensor 3.

[0046] The method for acquiring the real-time state of the oxygen sensor 2 by the visual sensor 3 in step S3 specifically comprises: collecting image data of the oxygen sensor 2 by the visual sensor 3 and performing image feature extraction, analyzing the image data by the extracted image features, and obtaining the real-time state of the oxygen sensor 2.

[0047] The specific control method in step S4 is:

[0048] Whether the liquid column sprayed by the spray arm assembly 11 directly sprays the oxygen sensor 2 during the cleaning process, if yes, the voltage of the booster pump 15 is reduced to reduce the water pressure and flow of the spray arm assembly 11, thereby effectively preventing the liquid column sprayed by the spray arm during the cleaning process of the dishwasher from directly spraying the oxygen sensor; if not, the cleaning working state is maintained;

[0049] Whether the bubbles generated by the cleaning liquid are blocked in the detection port of the oxygen sensor 2, if yes, the current of the exhaust fan 6 is increased to increase the rotating speed of the exhaust fan 6, thereby increasing the exhaust negative pressure and effectively eliminating the bubbles attached to the detection port of the oxygen sensor; if not, the cleaning working state is maintained.

[0050] The above specific embodiments have described the technical solutions and beneficial effects of the present application in detail, and it should be understood that the above description is only the most preferred embodiment of the present application, and is not used to limit the present application, and any modification, supplement and equivalent replacement within the principle range of the present application should be included in the protection range of the present application.

Claims

1. A dishwasher comprising a dishwasher body having an inner chamber (1) in which a spray arm assembly (11) is provided, a booster pump (15) being provided on a water inlet line of the spray arm assembly (11), characterized in that Also comprising: an oxygen sensor (2) arranged in the inner cavity (1); a visual sensor (3) arranged in the inner cavity (1), the visual sensor (3) being used to acquire the state of the oxygen sensor (2); the control method of the dishwasher comprises the following steps: S1: starting the dishwasher body; S2: detecting the humidity change of the dishwasher body in the cleaning process through the oxygen sensor (2); S3: acquiring the real-time state of the oxygen sensor (2) through the visual sensor (3); S4: controlling the water pressure and flow of the spray arm assembly (11) and the rotating speed of the exhaust fan (6) according to the real-time state of the oxygen sensor (2) acquired by the visual sensor (3); In step S4, the specific control method is: whether the liquid column sprayed by the spray arm assembly (11) in the cleaning process is directly sprayed to the oxygen sensor (2), if yes, the voltage of the booster pump (15) is reduced to reduce the water pressure and flow of the spray arm assembly (11); if not, the cleaning working state is maintained; whether the bubbles generated by the cleaning liquid are blocked in the detection port of the oxygen sensor (2), if yes, the current of the exhaust fan (6) is increased to increase the rotating speed of the exhaust fan (6); if not, the cleaning working state is maintained.

2. The dishwasher according to claim 1, characterized in that The oxygen sensor (2) is arranged at the top of the inner cavity (1).

3. The warewash machine of claim 2, wherein, The visual sensor (3) is arranged beside the oxygen sensor (2).

4. The dishwasher according to any one of claims 1 to 3, characterized in that An outer cover (4) is arranged between the spray arm assembly (11) and the visual sensor (3) in the inner cavity (1) to prevent the water sprayed by the spray arm assembly (11) from directly spraying to the visual sensor (3).

5. The warewash machine of claim 4, wherein, The oxygen sensor (2) is arranged in the outer cover (4), and the outer cover (4) has an opening communicating with the inner cavity (1).

6. The warewash machine of claim 5, wherein, The outer cover (4) is "L" shaped or arc-shaped.

7. The warewash machine of claim 6, wherein, The outer cover (4) is made of transparent material.

8. The warewashing machine according to any one of claims 1 to 3 or any one of claims 5 to 7, characterized in that, An exhaust passage (5) is arranged on the inner cavity (1) and communicates with the area where the oxygen sensor (2) is located, and an exhaust fan (6) is arranged in the exhaust passage (5) to exhaust the air in the inner cavity (1) into the exhaust passage (5). 9.The dish washer of claim 1, wherein In step S3, the method for acquiring the real-time state of the oxygen sensor (2) through the visual sensor (3) comprises: collecting image data of the oxygen sensor (2) through the visual sensor (3) and extracting image features, analyzing the image data through the extracted image features, and obtaining the real-time state of the oxygen sensor (2).

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