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Washing machine safety protection system and method

A technology for safety protection and washing machines, applied in the field of washing machines, can solve problems such as inability to protect, washing machines still running, and children drowning accidents, and achieve the effect of low cost, small changes, and improved safety

Active Publication Date: 2018-04-27
CHONGQING HAIER WASHING MASCH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] These two schemes are "software control" schemes, which means that the main chip needs to make software judgments. Once the main chip has a detection failure, or once there is a communication failure with the power board, or the SCR works state, it will not be able to play its due protective role, there is still the risk of the door being opened but the washing machine is still running, and there is also the risk of children entering and causing drowning accidents

Method used

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  • Washing machine safety protection system and method

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Embodiment 1

[0043] Such as figure 1 As shown, this embodiment discloses a safety protection system for a washing machine. The safety protection system in this embodiment includes: a door cover detection device and a main relay. The door cover detection device is connected with the door cover switch to detect the open / close state of the door cover of the washing machine, and sends different control signals according to different states to distinguish the different states of the door cover.

[0044] Such as figure 1 As shown, the main relay is connected to the power supply of the washing machine, and is used to control the on / off of the power supply circuit of the working module of the washing machine. In the washing machine, the working modules include: a cold water valve, and / or a hot water valve, and / or a softener valve, and / or a motor, which are respectively functional modules required for the normal operation of the washing machine, and the coordinated operation of the above working ...

Embodiment 2

[0051] This embodiment is a supplement to Embodiment 1. Such as figure 1 As shown, in this embodiment, the washing machine includes a drainage module, and the drainage module includes a drainage valve, and the control switch of the drainage valve is a relay 4 . The power supply circuit of the drainage module is independent from the power supply circuit of the working module described in Embodiment 1. That is, the control switch or power supply circuit of the drainage module is not controlled by the main relay. The washing machine in this embodiment further includes a water level detection device for detecting whether there is water in the washing tub, and the water level detection device and the above-mentioned drainage module are respectively electrically connected to the main control chip.

[0052] The main control chip receives the water level detection result of the water level detection device, and performs corresponding control operations according to the subsequent wa...

Embodiment 3

[0055] This embodiment discloses a washing machine safety protection method using the washing machine safety protection system of the above embodiment, which minimizes the potential safety hazard of drowning caused by children entering the bucket. In this embodiment, when the door cover of the washing machine is opened, as figure 2 shown, perform the following steps:

[0056] S1, control and close the working modules except washing machine drainage;

[0057] S2. Detect whether there is washing water in the washing machine, if there is, execute S3, and if not, return to S1;

[0058] S3. Controlling and opening the drainage working module of the washing machine to perform a drainage operation.

[0059] In this embodiment, the current fully automatic washing machine is mainly used, that is, after the clothes are put into the washing machine at one time, the cover does not need to be opened in the whole process, and the user is allowed to open the cover only after the washing m...

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Abstract

The invention discloses a washing machine safety protection system and method. The washing machine safety protection system comprises a door cover detection device for detecting opening / closing stateof a washing machine door cover; a main relay connected with power supply of a washing machine and used for controlling the on / off state of power supply circuits of washing machine work modules. The door cover detection device is electrically connected with the main relay, and the main relay is controlled to be turned off when the washing machine door cover is opened. When the washing machine doorcover is opened, the following steps are performed: S1, controlling and closing the work modules except for washing machine drainage; S2, testing whether there is washing water in the washing machine, if yes, executing S3, if not, returning to S1; S3, controlling and starting a washing machine drainage work module and performing drainage operation. The door cover detection device directly controls the on / off state of the work modules by means of hardware, thereby avoiding that the washing machine can not be protected in time when a main chip fails, drainage loads are further retained, and thedrainage is performed by determining whether there is water in a washing machine barrel, thereby preventing drowning accidents.

Description

technical field [0001] The invention belongs to the field of washing machines, and in particular relates to a washing machine safety protection system and method. Background technique [0002] At present, washing machines have become an essential household appliance in domestic and foreign families. More and more people use washing machines, and more and more accidents are caused by washing machines. In view of the fact that the upper cover is opened during the laundry process, there are many hidden dangers. For example, when there is water in the bucket, children can easily cause drowning incidents; In severe cases, there will be accidents leading to the death of children. [0003] In the electric control safety design of the washing machine, the linkage between the switch of the door cover and the operation of the washing machine is one of the key points to pay attention to. The requirement is to prohibit fast turning actions such as dehydration when opening the door. E...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06F37/42D06F33/02
CPCD06F37/42D06F33/00Y02B40/00
Inventor 于亮亮徐雯婷方大丰
Owner CHONGQING HAIER WASHING MASCH CO LTD
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