Water purification system, water purification device and control method of water purification system
A technology of water purification system and control method, which is applied in water/sewage treatment, general water supply saving, chemical instruments and methods, etc., can solve problems such as affecting customer experience, increasing waiting time for receiving water, and complex structure of water purifiers. Achieve the effect of ensuring drinking water safety, avoiding water waste and reducing waiting time
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Embodiment 1
[0059] This embodiment provides a water purification system, which can be applied to a water purification device that needs to filter and purify water for drinking, so as to improve the purity of drinking water and reduce the "first cup of water" of the water purification device. TDS value, improve the experience of water purification device. Wherein, the water purification device may be, but is not limited to, a faucet water purifier, a direct drinking water dispenser, etc. The present invention does not limit the type and structure of the water purification device.
[0060] Specifically, as figure 1 As shown, the water purification system provided in this embodiment includes a water driving device 5, a membrane filter unit 1 and a desalination filter module arranged in series along the water outlet direction and through the water purification pipeline 9. The desalination filter module includes a desalination filter unit 2, a membrane filter The water inlet of the filtration...
Embodiment approach
[0088] In this embodiment, since the TDS value of the first purified water decreases with the operation of the membrane filtration unit 1 and the discharge of the concentrated water from the concentrated water side, the preset desalination end condition can also be set as: the membrane filtration unit 1 The TDS value of the prepared pure water is higher than the second preset TDS value. That is, when the first purified water TDS value is reduced to the second preset TDS value, the desalination filter unit 2 is switched from the desalination state to the water through state.
[0089] In another embodiment, the preset desalination condition may also be: the duration of time when the membrane filtration unit 1 does not pass water is longer than the preset shutdown duration. When the non-passing time of the membrane filtration unit 1 is longer than the preset time, it means that the membrane filtration unit 1 has not performed the filtration operation for a long time, and the ions...
Embodiment 2
[0097] like figure 2 As shown, this embodiment provides a water purification system and a control method for applying the system, and the water purification system provided in this embodiment is based on a further improvement of the water purification system in Embodiment 1, and this embodiment does not The same structure as that of the first embodiment will be described in detail.
[0098]In this embodiment, the water purification system further includes a return pipe 13, the first end of the return pipe 13 is connected with the water outlet of the desalination filter unit 2, the second end of the return pipe 13 is connected with the water inlet of the membrane filter unit 1, and The return pipe 13 is provided with a return control valve 14 for controlling the on-off of the return pipe 13 .
[0099] By setting the return pipe 13 and the return control valve 14, when the desalination filter unit 2 needs to be regenerated, the high pressure switch 16 is closed, the return con...
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