Washing machine with turbidity sensor

Abstract

The washing machine comprises an outer barrel, a liquid storage chamber and the turbidity sensor, a sampling opening is formed in the lower edge of the side wall of the outer barrel in a penetrating mode, the liquid storage chamber is arranged at the outer end of the outer barrel and communicated with the sampling opening, the detection end of the turbidity sensor is communicated with the liquid storage chamber, and the detection end of the turbidity sensor is communicated with the liquid storage chamber. The turbidity sensors are arranged in the liquid storage chamber and used for detecting the turbidity of washing water entering the liquid storage chamber, the turbidity sensors are electrically connected with a control mainboard of an external washing machine, when the external washing machine is in a washing and / or rinsing program, the turbidity sensors are in a working state, and the two turbidity sensors are oppositely arranged at the two ends of the liquid storage chamber. According to the utility model, the turbidity sensor is arranged on the side edge of the outer barrel, so that the sensor can be washed in each washing and rinsing process, stains are not remained, the influence of washing powder foam is avoided, and the use accuracy and the service life are ensured while the overall cost is not additionally increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of intelligent washing machines, in particular to a washing machine with a dirt sensor. Background Art

[0002] With the development of technology and the improvement of user needs, more and more sensor technologies are applied to washing machines, among which turbidity sensors used to detect water quality are more and more widely used. By detecting the turbidity of washing water, it is judged whether the clothes need to be rinsed further, which can not only ensure the washing effect but also avoid the waste of water and electricity.

[0003] In existing washing machines with turbidity sensors, the sensor is usually placed at the bottom of the outer tub. During each use, residual water and stains will remain at the bottom of the outer tub, resulting in inaccurate sensor measurements and failure after long-term use of the washing machine. How to improve the life and measurement accuracy by designing a new sensor and mounting structure is an urgent problem to be solved by people in this field. Utility Model Content

[0004] The purpose of the utility model is to provide a washing machine with a dirt sensor in order to solve the above-mentioned problem.

[0005] The technical solution adopted by the utility model is as follows: a washing machine with a turbidity sensor, comprising an outer barrel, a liquid storage chamber and a turbidity sensor, a sampling port is opened through the lower edge of the side wall of the outer barrel, the liquid storage chamber is arranged at the outer end of the outer barrel and is connected with the sampling port, and the detection end of the turbidity sensor is connected with the liquid storage chamber for detecting the turbidity of washing water entering the liquid storage chamber.

[0006] In a preferred embodiment, the turbidity sensor is electrically connected to a control mainboard of the external washing machine, and when the external washing machine is in a washing and / or rinsing program, the turbidity sensor is in a working state.

[0007] In a preferred embodiment, the number of the turbidity sensors is two and they are disposed oppositely at two ends of the liquid storage chamber. Both ends of the liquid storage chamber extend outward to form mounting posts with threaded holes. The mounting posts are fixed to the turbidity sensors by screws.

[0008] In a preferred embodiment, the outer end of the sampling port protrudes outward to form a mounting ring, the inner wall of the liquid storage chamber is recessed inward to form a stepped groove to accommodate the insertion of the mounting ring, and a sealing ring is provided at the connection between the liquid storage chamber and the mounting ring.

[0009] In a preferred embodiment, the upper and lower ends of the liquid storage chamber are protruded to form mounting ears, and the upper and lower ends of the mounting ring are provided with mounting frames corresponding to the mounting ears on the outer wall of the outer barrel, and the mounting ears and the mounting frames are fixed by screws.

[0010] To sum up, due to the adoption of the above-mentioned technical scheme, the beneficial effects of the utility model are as follows: the utility model places the turbidity sensor installation position on the side of the outer barrel, and the sensor will be flushed during each washing and rinsing process, without any residual stains, and will not be affected by the foam of detergent. While not increasing the overall cost, the accuracy and life of use are guaranteed, the market competitiveness of the product is improved, and it is worthy of promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0012] Figure 2 It is a schematic diagram of the partial cross-sectional plan structure of the utility model as a whole;

[0013] Figure 3 It is a schematic diagram of the three-dimensional structure of the turbidity sensor and the liquid storage chamber combination in the utility model;

[0014] Figure 4 This is a schematic diagram of the planar structure of the outer barrel of the utility model viewed from the inside.

[0015] Markings in the figure: 1-outer barrel, 101-mounting ear, 102-mounting frame, 103-mounting ring, 2-liquid storage chamber, 201-mounting ear; 202-mounting column, 3-turbidity sensor. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0017] Reference Figure 1-4 A washing machine with a turbidity sensor comprises an outer barrel 1, a liquid storage chamber 2 and a turbidity sensor 3. A sampling port 101 is provided on the lower edge of the side wall of the outer barrel 1. The liquid storage chamber 2 is arranged at the outer end of the outer barrel 1 and is communicated with the sampling port 101. The detection end of the turbidity sensor 3 is communicated with the liquid storage chamber 2 for performing turbidity detection on the washing water entering the liquid storage chamber 2. The turbidity sensor 3 is installed on the side of the outer barrel 1. The turbidity sensor 3 and the liquid storage chamber 2 are flushed during each washing and rinsing process, and no stains are left. Moreover, the turbidity sensor 3 is not affected by the foam of washing powder, so that the accuracy and life of the washing water are guaranteed without increasing the overall cost.

[0018] The sampling port 101 may be located on the side wall of the outer tub 1 below the lowest washing and rinsing water level of the washing machine.

[0019] Furthermore, the turbidity sensor 3 is electrically connected to the control main board of the external washing machine. When the external washing machine is in the washing and / or rinsing program, the turbidity sensor 3 is in working condition. The turbidity sensor 3 can be used to judge the washing or rinsing effect in the washing or rinsing program, and the washing or rinsing time can be increased or decreased according to the judgment result, so as to achieve the best washing effect for the clothes.

[0020] Here are some examples:

[0021] During the washing process, as the stains in the clothes are dissolved and released into the water, the turbidity sensor 3 detects the change in the stain value in the water. After a specific washing time T1 (T is greater than 1 and less than 20), the control mainboard starts to take values ​​from the sensor. The value can be the average or median of a group of data. When the value is greater than a specific value x1, the control mainboard controls the washing machine to extend the washing time by t1 min (t1 is greater than 1 and less than 10). When the value is less than x1, the washing is stopped or the washing is ended after a specific washing time T2.

[0022] During the first rinsing process, the value is taken with reference to the washing process. When the value is greater than x2, the number of rinses is increased by 1. When the value is less than x2, the amount of water in the second rinsing process is reduced or the program ends when the first rinse is completed. The specific data mentioned above are not limited here and can be set according to different scenarios.

[0023] It should be mentioned that the above procedures are existing feasible technologies and will not be elaborated in detail.

[0024] Furthermore, there are two turbidity sensors 3 which are arranged opposite to each other at the two ends of the liquid storage chamber 2. Both ends of the liquid storage chamber 2 extend outward to form mounting columns 202 with threaded holes. The mounting columns 202 and the turbidity sensors 3 are fixed by screws. The two turbidity sensors 3 can respectively detect the turbidity of the internal washing water. After the detection, the middle average value can be taken as the actual value, thereby improving the overall detection accuracy.

[0025] Furthermore, the outer end of the sampling port 101 protrudes outward to form a mounting ring 103, and the inner wall of the liquid storage chamber 2 is recessed inward to form a stepped groove for inserting the mounting ring 103. A sealing ring (not shown in the figure) is provided at the connection between the liquid storage chamber 2 and the mounting ring 103. The designed mounting ring and sealing ring can improve the sealing effect of the connection between the sampling port 101 and the liquid storage chamber 2 to avoid water leakage.

[0026] Furthermore, mounting ears 201 are formed on the upper and lower ends of the liquid storage chamber 2, and mounting frames 102 corresponding to the mounting ears 201 are provided on the upper and lower ends of the mounting ring 103 on the outer wall of the outer barrel 1. The mounting ears 201 and the mounting frame 102 are fixed by screws, and the liquid storage chamber 2 is tightly inserted into the mounting ring 103, and then the mounting ears 201 and the mounting frame 102 are locked with screws to complete the combination operation of the sensor part and the barrel body.

[0027] In summary, the sensor part is installed on the side of the outer barrel 1. The sensor part will be flushed during each washing and rinsing process, and no stains will remain. It is also not affected by detergent foam, thus ensuring the accuracy and life of use without increasing the overall cost.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A washing machine with a turbidity sensor, comprising an outer tub, a liquid storage chamber and a turbidity sensor, characterized in that: A sampling port is provided through the lower edge of the outer barrel side wall, the liquid storage chamber is arranged at the outer end of the outer barrel and is connected with the sampling port, and the detection end of the turbidity sensor is connected with the liquid storage chamber for detecting the turbidity of the washing water entering the liquid storage chamber.

2. A washing machine with a dirt sensor as claimed in claim 1, characterized in that: The turbidity sensor is electrically connected to a control mainboard of the external washing machine. When the external washing machine is in a washing and / or rinsing program, the turbidity sensor is in a working state.

3. A washing machine with a dirtiness sensor as claimed in claim 1, characterized in that: There are two turbidity sensors which are arranged oppositely at two ends of the liquid storage chamber. Both ends of the liquid storage chamber extend outward to form mounting posts with threaded holes. The mounting posts are fixed to the turbidity sensors by screws.

4. A washing machine with a dirt sensor as claimed in claim 1, characterized in that: The outer end of the sampling port protrudes outward to form a mounting ring, the inner wall of the liquid storage chamber is recessed inward to form a stepped groove to accommodate the insertion of the mounting ring, and a sealing ring is provided at the connection between the liquid storage chamber and the mounting ring.

5. A washing machine with a dirt level sensor as claimed in claim 4, characterized in that: The upper and lower ends of the liquid storage chamber are protruded to form mounting ears, and the upper and lower ends of the mounting ring are provided with mounting frames corresponding to the mounting ears on the outer wall of the outer barrel, and the mounting ears are fixed to the mounting frames by screws.

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