Waterway protection system, dish washing machine and control method of dish washing machine

Abstract

The invention discloses a waterway protection system, a dish washing machine and a control method of the dish washing machine. The waterway protection system comprises an inner container, which is provided with a water inlet pipe and an overflow pipe, wherein the water inlet pipe is respectively communicated with a water source and the interior of the inner container, and the overflow pipe is respectively communicated with the interior of the inner container and a water collecting part; a water inlet valve assembly, which at least comprises a first water valve arranged on the water inlet pipe; an overflow transmission mechanism, which is arranged on the overflow pipe and is linked with a valve core of the first water valve; an overflow detection module, which is arranged on the overflow pipe or the overflow transmission mechanism; a water inlet flow meter, which is arranged on the water inlet pipe; and a control module, which is electrically connected with the overflow detection module and the water inlet flow meter respectively. According to the waterway protection system, the structure is simple, the first water valve is directly closed in a mechanical mode when overflow occurs, the reliability is high, a water source is cut off in time, water resource waste is avoided, the situation that a customer's home is soaked with water is prevented, meanwhile, faults of the water inlet flow meter can be accurately recognized, and after-sales maintenance is facilitated.

Description

technical field [0001] The invention relates to the technical field of dishwashers, in particular to a waterway protection system, a dishwasher and a control method for the dishwasher. Background technique [0002] Existing dishwashers lack protection for the water inlet valve, and only shut down the machine through a water inlet fault to turn off the power supply of the water inlet valve. However, this protection method has the following disadvantages: [0003] 1. The water inlet valve is closed by electronic control, which has low safety and reliability. When the power supply is abnormal, the water inlet valve cannot be closed in time, and the dishwasher continues to be in the water inlet state, causing water to overflow from the dishwasher , the customer home situation of blisters occurs; [0004] 2. When the direct connection of the water inlet valve fails, even if the power supply of the water inlet valve is turned off, the dishwasher is still in the water inlet state ...

AI Technical Summary

Problems solved by technology

[0003] 1. The water inlet valve is closed by electronic control, which has low safety and reliability. When the power supply is abnormal, the water inlet valve cannot be closed in time, and the dishwasher continues to be in the water inlet state, causing water to overflow from the dishwasher , the customer home situation of blisters occurs;

[0004] 2. When the direct connection of the water inlet valve fails, even if the power supply of the water inlet valve is turned off, the dishwasher is still in the water inlet state because the water inlet valve cannot be closed tightly, causing water to overflow from the dishwasher, wasting water resources

[0005] In addition, the current dishwasher only judges the fault of the flow meter by the fault of the water inlet. However, the fault of the water inlet may be caused by factors such as the fault of the water inlet valve, water failure, and low water pressure. If the cause of the fault is not clear, This is a big problem for after-sales maintenance

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