Dishwasher control method and dishwasher

Abstract

The present invention discloses a dishwasher control method and a dishwasher. A turbine and an N-way switching valve are installed before a water inlet pipe of the dishwasher. N output pipelines connected to the N output ends are all provided with filter screens to filter mud and sand in the water, thereby protecting the dishwasher motor from wear caused by mud and sand accumulation. At the same time, in order to avoid the influence of mud and sand particles to cause unstable water flow, the present invention judges the water pressure condition by the turbine speed during the water inlet period when the washing process is started. When the blockage condition on the current output pipeline is relatively serious and normal water inlet cannot be guaranteed, the output of the N-way switching valve is switched according to a set sequence to ensure that the turbine speed is greater than the set speed, thereby ensuring normal water inlet. The process is invisible to the user, and the washing process can be kept normal when the filter screen is added, and the frequency of the user cleaning the filter screen is prolonged, thereby improving the user experience.

Description

Technical Field

[0001] The present invention belongs to the technical field of dishwashers, and in particular, relates to a dishwasher control method and a dishwasher. Background Art

[0002] The water inlet pipeline of the existing dishwasher is usually a water source connected to a water inlet pipe, and the water inlet pipe is directly connected to a water inlet valve. When the dishwasher is running, the water valve is opened to perform the water inlet action.

[0003] However, in actual applications, differences in water supply methods lead to different water quality in different regions. For example, in Australia, most users use water pumps to extract groundwater, which results in a certain amount of silt and gravel particles in the incoming water. The silt and gravel particles can cause the dishwasher's motor to accumulate between the shaft and the bearing during the water intake process, causing motor wear between the motor shaft and the bearing. Summary of the invention

[0004] The purpose of the present invention is to provide a dishwasher control method and a dishwasher, which can solve the technical problem that the existing dishwasher is caused by the accumulation of sediment and causes the motor to wear when used in a water environment with a lot of sediment, and at the same time can ensure the normal water intake of the dishwasher during the washing process.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions to achieve the above problems:

[0006] A dishwasher control method is proposed, the dishwasher comprises: a water inlet pipeline connected to a water source; a water inlet valve installed on the water inlet pipeline; an N-way switching valve comprising an input end and N output ends that can be switched; the input end is connected to the water outlet end of the water inlet valve, and the N output ends are respectively connected to an output pipeline; N is an integer greater than or equal to 2; a turbine is arranged at the front end of the N-way switching valve; N filters are respectively arranged in the N output pipelines; a dishwasher water inlet pipe, the N output pipelines are all connected thereto; the method comprises: obtaining and judging the turbine speed after the water inlet valve is opened; when the turbine speed is greater than the set speed, controlling the N-way switching valve to maintain the current output state; when the turbine speed is less than or equal to the set speed and greater than zero, controlling the N-way switching valve to perform switching in a set order, judging the turbine speed once each time the switch is made, and stopping the switching when the turbine speed is greater than the set speed.

[0007] Furthermore, the method also includes: when all output ends of the N-way switching valve are switched in accordance with the set sequence, and the turbine speed after each switching is less than or equal to the set speed and greater than zero, a blockage alarm is issued.

[0008] Furthermore, the setting sequence is generated in the following manner: taking the current output end of the N-way switching valve when the water inlet valve is opened as the first output end, the setting sequence is set as: starting from the first output end, switching in sequence in a manner of increasing by 1; or, numbering the output ends of the N-way switching valve, and switching from the current output end i in the order of i+1, i+2, ..., N, 1, 2, ..., i-1, 1≤i≤N-1.

[0009] Furthermore, the method also includes: during the water intake period before the current washing process of the dishwasher ends, repeatedly obtaining and judging the turbine speed in a set cycle.

[0010] Furthermore, the method also includes: when the turbine speed is equal to zero, issuing an abnormal water inflow alarm.

[0011] A dishwasher is proposed, comprising: a water inlet pipeline connected to a water source; a water inlet valve installed on the water inlet pipeline; an N-way switching valve, comprising an input end and N output ends that can be switched; the input end is connected to the water outlet end of the water inlet valve, and the N output ends are respectively connected to an output pipeline; N is an integer greater than or equal to 2; a turbine is arranged at the front end of the N-way switching valve; N filters are respectively arranged in the N output pipelines; a dishwasher water inlet pipe, the N output pipelines are all connected to it; a water inlet controller, connected to the turbine and the N-way switching valve, for obtaining and judging the turbine speed after the water inlet valve is opened; when the turbine speed is greater than the set speed, controlling the N-way switching valve to maintain the current output state; when the turbine speed is less than or equal to the set speed and greater than zero, controlling the N-way switching valve to perform switching in a set order, judging the turbine speed once each time the switch is made, and stopping the switching when the turbine speed is greater than the set speed.

[0012] Furthermore, the dishwasher also includes: an alarm module, which is used to issue a blockage alarm when the water inlet controller switches all output ends of the N-way switching valve according to the set sequence and the turbine speed after each switching is less than or equal to the set speed and greater than zero.

[0013] Furthermore, the water inlet controller includes: a setting sequence setting unit, which is used to take the current output end of the N-way switching valve as the first output end when the water inlet valve is opened, and set the setting sequence to: switching in sequence starting from the first output end in an increment of 1; or, numbering the output ends of the N-way switching valve, and switching in sequence from the current output end i in i+1, i+2, ..., N, 1, 2, ..., i-1, 1≤i≤N-1.

[0014] Furthermore, the dishwasher further comprises: a cycle detection control module, which is used to repeatedly start the water inlet controller at a set cycle during the water inlet period before the current washing process of the dishwasher ends.

[0015] Furthermore, the alarm module is also used to issue an abnormal water inflow alarm when the turbine speed is equal to zero.

[0016] Compared with the prior art, the advantages and positive effects of the present invention are as follows: in the dishwasher control method and dishwasher proposed in the present invention, a turbine and an N-way switching valve are installed before the water inlet pipe of the dishwasher, and filter nets are arranged on the N output pipelines connected to the N output ends to filter the silt in the water, thereby protecting the dishwasher motor from wear caused by silt accumulation, and solving the technical problem of motor wear caused by silt accumulation when the existing dishwasher is used in a silty water environment; however, due to the setting of the filter net, for areas where groundwater is extracted for washing, the silt content in the water flow is large, and the silt blocks the filter mesh under the impact of water pressure, which will reduce the water flow velocity and water pressure. Although the position of the silt or sand and gravel particles will change after the water pressure decreases, when the water pressure decreases, During the water intake of the pre-washing process, there may be a situation where normal water intake cannot be guaranteed. In order to avoid the influence of mud and sand particles that cause unstable water flow, the present invention judges the water pressure by the turbine speed during the water intake when the washing process is started, and sets a set speed. When the turbine speed is less than or equal to the set speed, the water pressure is too small, indicating that the blockage on the current output pipeline is relatively serious, and normal water intake cannot be guaranteed. The output of the N-way switching valve is switched according to the set sequence to ensure that the turbine speed is greater than the set speed, thereby ensuring normal water intake. This process is invisible to the user, and can ensure the normal washing process while adding a filter and extend the frequency of users cleaning the filter, thereby improving the user experience.

[0017] Furthermore, the turbine arranged at the front end of the N-way switching valve can disrupt the water flow during rotation, thereby breaking up the mud and sand particles, making it difficult for them to be spread flat on the filter net. After the water supply stops, the mud and sand particles can sink, thereby alleviating the blockage of the filter net.

[0018] Furthermore, the water outage situation in the user's home can be judged by the rotation speed of the turbine, thereby preventing the misjudgment of the blockage situation caused by the water outage in the user's home.

[0019] Other features and advantages of the present invention will become more apparent after reading the detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a functional structure diagram of the dishwasher proposed by the present invention;

[0021] Figure 2 This is a flow chart of the first embodiment of the dishwasher control method proposed by the present invention.

[0022] Figure 3This is a flow chart of a second embodiment of the dishwasher control method proposed by the present invention;

[0023] Figure 4 This is a functional architecture diagram of the first embodiment of the dishwasher proposed by the present invention;

[0024] Figure 5 This is a functional architecture diagram of the second embodiment of the dishwasher proposed by the present invention. DETAILED DESCRIPTION

[0025] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0026] The dishwasher control method proposed in the present invention is particularly suitable for dishwashers in water quality areas with relatively high content of mud and gravel particles. It aims to filter out the mud and gravel particles in the water while ensuring the normal water intake of the dishwasher during the washing process and reducing the frequency of users cleaning and filtering the mud and gravel particles.

[0027] Based on the above, in the dishwasher proposed by the present invention, if Figure 1 As shown, it includes a water inlet pipeline 1, a water inlet valve 2, an N-way reversing valve 3, a turbine 4, a filter 5 and a dishwasher water inlet pipe 6; wherein the water inlet pipe 1 is connected to a water source, such as groundwater extracted from a user's home; the N-way switching valve 3 includes an input end and N output ends that can be switched, wherein the input end is connected to the water inlet pipeline 1, and the N output ends are respectively connected to an output pipeline 7, where N is at least 2; the turbine 4 is arranged at the front end of the N-way switching valve, and it rotates based on the water flow; a filter 5 is arranged in each output pipeline 7, and all the output pipelines 7 are connected to the dishwasher water inlet pipe 6; the water inlet valve 2 is installed on the dishwasher water inlet pipe 6; the filter 5 is preferably a spherical filter.

[0028] Based on the above dishwasher functional structure, the dishwasher control method proposed in the present invention is run in the water inlet controller of the dishwasher, such as Figure 2 As shown, the following steps are included:

[0029] Step S1, obtaining and judging the turbine speed after the water inlet valve is opened.

[0030] After the dishwasher opens the water inlet valve 2 to execute the washing process, water flows from the water inlet pipe 1 through the water inlet valve 2 to the N-direction switching valve 3, and the turbine 4 rotates under the action of the water flow.

[0031] The N-way switching valve 3 remains switched at one output end according to the setting or the state after the last washing process, and the water flows from the output end that remains switched into the corresponding output pipeline 7, and enters the dishwasher water inlet pipe 6 after filtering the mud and gravel particles through the built-in filter net.

[0032] Since the filter 5 is provided, for areas such as Australia where dripping water is extracted for washing, the content of silt and gravel particles in the water flow is large. Under the flushing of water pressure, the silt and gravel particles accumulate on the filter 5 and block the mesh, which will reduce the water flow rate and water pressure; although under normal circumstances, after the water supply is stopped or the water pressure is reduced, the position of the silt and gravel particles will change to reduce the clogging condition, for example, based on gravity sinking, but in the case of water quality with a large content of silt and gravel particles, it is possible that when the mesh is blocked, it is impossible to ensure normal water supply. In order to avoid the influence of silt particles that causes unstable water flow and ensure normal water supply during the washing process, the present invention adopts a method of obtaining the rotation speed of the turbine 4, and judges the water pressure based on the rotation speed of the turbine 4, thereby judging the clogging condition of the output pipeline 7 of the current N-way switching valve 3, so that when the clogging is serious, the normal water supply of the current washing process can be guaranteed by switching the output.

[0033] Based on the above, in an embodiment of the present invention, a set speed is set, at which the blockage of the output pipeline is relatively serious and normal water inlet cannot be guaranteed; after the water inlet valve 2 is opened, the water inlet controller obtains the speed of the turbine 4 in real time and compares it with the set speed for judgment.

[0034] Step S2: When the turbine speed is greater than the set speed, the N-way switching valve is controlled to maintain the current output state.

[0035] If the rotation speed of the turbine 4 is greater than the set rotation speed, it means that the current output pipeline 7 can ensure a normal water inlet, and the N-way switching valve 3 can maintain the current output end switching passage.

[0036] Step S3: When the turbine speed is less than or equal to the set speed and greater than zero, the N-way switching valve is controlled to perform switching according to the set sequence.

[0037] In the embodiment of the present invention, in order to avoid the erroneous judgment of serious blockage when the water supply is cut off in the user's home, the turbine speed is limited to be greater than zero when it is less than or equal to the set speed, indicating that the current output pipeline of the N-way switching valve is seriously blocked. In order to ensure normal water supply, the new output end is switched according to the set order.

[0038] The setting order here can be: 1. Number the output ends of the N-way switching valve as 1, 2, 3..., N, and take the currently switched output end as i (1≤i≤N) as an example, and follow the order of i+1, i+2,..., N, 1, 2,..., i-1; 2. Take the current output end of the N-way switching valve when the water inlet valve 2 is opened as the first output end, number the output ends one by one from 1 to N, and then switch in sequence from 1 to N.

[0039] Step S4: After switching, the turbine speed is obtained again and judged.

[0040] After the switch, the turbine speed is obtained again and compared with the set speed. If it is still less than or equal to the set speed and greater than zero, return to step S3 until the turbine speed is greater than the set speed.

[0041] If it is greater than the set speed, the switching will stop and remain in the current switching state.

[0042] By switching the output of the M-direction switching valve as described above, the water inlet of the current washing process is maintained in a stable input state, thereby ensuring that the current washing process proceeds normally.

[0043] like Figure 3 As shown, if after all outputs of the M-direction switching valves are switched according to the above setting sequence, the turbine speed after each switching is less than or equal to the set speed and greater than zero, then step S5: a blockage alarm is issued.

[0044] Prompt users to clean up the mud and sand particles in front of the filter in the output pipeline in time.

[0045] The above process is invisible to the user. It can ensure the normal washing process when adding a filter and extend the frequency of filter cleaning for users, thereby improving the user experience.

[0046] In some embodiments of the present invention, when the turbine speed obtained after the water inlet valve 2 is opened is zero, step S6: issuing a water inlet abnormality alarm.

[0047] The water outage situation in the user's home can be judged by the rotation speed of the turbine to prevent misjudgment of the blockage situation caused by the water outage in the user's home.

[0048] In some embodiments of the present invention, during the water intake period before the current washing process of the dishwasher ends, the above steps S1 to S4 are repeated at a set cycle.

[0049] Based on the above-proposed dishwasher control method, the present invention proposes a dishwasher, including a water inlet pipeline 1, a water inlet valve 2, an N-way reversing valve 3, a turbine 4, a filter 5, a dishwasher water inlet pipe 6 and a water inlet controller 8.

[0050] Among them, Figure 1 As shown, the water inlet pipe 1 is connected to a water source, such as groundwater extracted from a user's home; the N-way switching valve 3 includes an input end and N output ends that can be switched, wherein the input end is connected to the water inlet pipe 1, and the N output ends are respectively connected to an output pipe 7, where N is at least 2; the turbine 4 is arranged at the front end of the N-way switching valve, and rotates based on the water flow; a filter screen 5 is arranged in each output pipe 7, and all output pipes 7 are connected to the dishwasher water inlet pipe 6; the water inlet valve 2 is installed on the dishwasher water inlet pipe 6.

[0051] like Figure 4As shown, the water inlet controller 8 is connected to the turbine 4 and the N-way switching valve 3, and is used to obtain and judge the turbine speed after the water inlet valve 2 is opened. When the turbine speed is greater than the set speed, the N-way switching valve is controlled to maintain the current output state; when the turbine speed is less than or equal to the set speed and greater than zero, the N-way switching valve is controlled to switch according to the set order, and the turbine speed is judged once each time it is switched until the switching stops when the turbine speed is greater than the set speed.

[0052] In some embodiments of the present invention, the dishwasher also includes an alarm module 9, which is used to issue a blockage alarm when the water inlet controller 8 switches all output ends of the N-way switching valve in a set order and the turbine speed after each switching is less than or equal to the set speed and greater than zero; or, when the turbine speed is equal to zero, issue an abnormal water inlet alarm.

[0053] In some embodiments of the present invention, Figure 5 As shown, the water inlet controller 8 includes a setting sequence setting unit 81, which is used to take the current output end of the N-way switching valve as the first output end when the water inlet valve is opened, and set the setting sequence as: starting from the first output end, switching one by one in a manner of adding 1; or, numbering the output ends of the N-way switching valve, and switching from the current output end i in the order of i+1, i+2, ..., N, 1, 2, ..., i-1, 1≤i≤N-1.

[0054] In some embodiments of the present invention, Figure 5 As shown, the dishwasher further comprises a cycle detection control module 10, which is used to repeatedly start the water inlet controller 8 to perform water inlet control at a set cycle during the water inlet period before the current washing process of the dishwasher ends.

[0055] The dishwasher proposed in the present invention is equipped with a turbine and an N-way switching valve before the water inlet pipe of the dishwasher. The N output pipes connected to the N output ends are all provided with filter nets to filter the silt in the water, thereby protecting the motor of the dishwasher from wear caused by silt accumulation, and solving the technical problem of motor wear caused by silt accumulation when the existing dishwasher is used in a water environment with a lot of silt. At the same time, in order to avoid the influence of silt particles causing unstable water flow, the present invention judges the water pressure by the turbine speed during the water inlet period when the washing process is started. When the clogging on the current output pipe is relatively serious and normal water inlet cannot be guaranteed, the output of the N-way switching valve is switched according to the set sequence to ensure that the turbine speed is greater than the set speed, thereby ensuring normal water inlet. This process is invisible to the user, and the washing process can be kept normal when the filter is added, and the frequency of user cleaning the filter is extended, thereby improving the user experience.

[0056] It should be pointed out that the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A method for controlling a dishwasher, the dishwasher comprising: Water inlet pipeline, connected to water source; An N-way switching valve includes an input end and N output ends that can be switched based on the switching; The input end is connected to the water inlet pipeline, and the N output ends are respectively connected to an output pipeline; N is an integer greater than or equal to 2; A turbine, arranged at the front end of the N-way switching valve; N filters are respectively arranged in N output pipelines; A dishwasher water inlet pipe, with which the N output pipes are all connected; A water inlet valve, installed on the water inlet pipe of the dishwasher; Characterized in that the method comprises: After the water inlet valve is opened, the turbine speed is obtained and judged; When the turbine speed is greater than the set speed, the N-way switching valve is controlled to maintain the current output state; When the turbine speed is less than or equal to the set speed and greater than zero, the N-way switching valve is controlled to perform switching according to the set order, and the turbine speed is judged every time the turbine speed is switched until the switching stops when the turbine speed is greater than the set speed.

2. The dishwasher control method according to claim 1, characterized in that: The method further comprises: When all output ends of the N-way switching valve are switched in the set order, and the turbine speed after each switching is less than or equal to the set speed and greater than zero, a blockage alarm is issued.

3. The dishwasher control method according to claim 1, characterized in that: The setting sequence is generated as follows: The current output end of the N-way switching valve when the water inlet valve is opened is taken as the first output end, and the setting sequence is set as follows: starting from the first output end, switching in sequence in a manner of adding 1; or, The output ends of the N-way switching valve are numbered, and switched in the order of i+1, i+2, ..., N, 1, 2, ..., i-1 from the current output end i, 1≤i≤N-1.

4. The dishwasher control method according to claim 1, characterized in that: The method further comprises: During the water intake period before the current washing process of the dishwasher ends, the turbine speed is repeatedly obtained and judged in a set cycle.

5. The dishwasher control method according to claim 1, characterized in that: The method further comprises: When the turbine speed is equal to zero, an abnormal water inflow alarm is issued.

6. A dishwasher, characterized in that include: Water inlet pipeline, connected to water source; An N-way switching valve includes an input end and N output ends that can be switched based on the switching; The input end is connected to the water inlet pipeline, and the N output ends are respectively connected to an output pipeline; N is an integer greater than or equal to 2; A turbine, arranged at the front end of the N-way switching valve; N filters are respectively arranged in N output pipelines; A dishwasher water inlet pipe, with which the N output pipes are all connected; A water inlet valve, installed on the water inlet pipe of the dishwasher; A water inlet controller, connected to the turbine and the N-way switching valve, for obtaining and judging the turbine speed after the water inlet valve is opened; When the turbine speed is greater than the set speed, the N-way switching valve is controlled to maintain the current output state; When the turbine speed is less than or equal to the set speed and greater than zero, the N-way switching valve is controlled to perform switching according to the set order, and the turbine speed is judged every time the switching is performed until the turbine speed is greater than the set speed and the switching is stopped.

7. The dishwasher according to claim 6, characterized in that The dishwasher also includes: The alarm module is used to issue a blockage alarm when the water inlet controller switches all the output ends of the N-way switching valve according to the set sequence and the turbine speed after each switching is less than or equal to the set speed and greater than zero.

8. The dishwasher according to claim 6, characterized in that The water inlet controller comprises: A setting sequence setting unit is used to set the current output end of the N-way switching valve when the water inlet valve is opened as the first output end, and set the setting sequence to: start from the first output end and switch in sequence in a manner of adding 1; or, The output ends of the N-way switching valve are numbered, and switched in the order of i+1, i+2, ..., N, 1, 2, ..., i-1 from the current output end i, 1≤i≤N-1.

9. The dishwasher according to claim 6, characterized in that: The dishwasher also includes: The cycle detection control module is used to repeatedly start the water inlet controller at a set cycle during the water inlet period before the current washing process of the dishwasher ends.

10. The dishwasher according to claim 7, characterized in that The alarm module is also used for: When the turbine speed is equal to zero, an abnormal water inflow alarm is issued.

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