Water purifier and control method thereof
A technology of water purifier and control device, which is applied in the direction of water treatment parameter control, chemical instrument and method, excitation or armature current control, etc., and can solve the problems of reducing the service life of the filter element and reducing the filtering effect of the filter element, etc.
Active Publication Date: 2019-04-19
GUANGDONG WELLING ELECTRIC MACHINE MFG
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Problems solved by technology
However, when the inlet water pressure of the booster pump changes or changes due to pipeline blockage, the degree of pressure change is different each time. The fixed boost provided by the booster pump cannot provide optimal filtration for the filter element. In this way, not only the filtering effect of the filter element will be reduced, but also the service life of the filter element will be reduced
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[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0043] It should be noted that the technical solutions of the various embodiments of the present invention can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered as the Combinations do not exist and are not within the scope of protection claimed by the present invention.
[0044] The invention provi...
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The invention discloses a water purifier and a control method thereof. The water purifier comprises a water inflow end, a filter element, a booster pump arranged on a pipeline between the water inflow end and the filter element, a control device, a power supply for supplying a working power source to a motor of the booster pump and the control device, a rotating speed control circuit for adjusting the rotating speed of the motor of the booster pump according to control signals of the control device, and a sampling circuit for acquiring working current of the motor. The control device comprises a pressure acquisition module and an adjusting module. The pressure acquisition module is used for acquiring the motor working current acquired by the sampling circuit and acquiring the pressure value of effluent boosted by the booster pump according to the motor working current acquired by the sampling circuit. The adjusting module is used for correspondingly adjusting the duty ratio of currently-output signals according to the acquired pressure value of the effluent boosted by the booster pump and a target pressure value, and then the rotating speed control circuit correspondingly controls the rotating speed of the motor of the booster pump. The pressure of the effluent boosted by the booster pump can be always optimal, and then the filtering effect of the water purifier is improved.
Description
technical field [0001] The invention relates to the technical field of water purifiers, in particular to a water purifier and a control method thereof. Background technique [0002] At present, most of the water purifiers are equipped with a booster pump to provide the required water inlet pressure for the filter element to improve the filtering effect of the filter element. [0003] In the existing booster pumps, the motor is generally a series-excited motor powered by a low-voltage DC power supply. The control circuit is only used to control the start and stop of the booster pump. Therefore, the booster pump can only provide a fixed boost. However, when the inlet water pressure of the booster pump changes or changes due to pipeline blockage, the degree of pressure change is different each time. The fixed boost provided by the booster pump cannot provide optimal filtration for the filter element. In this way, not only the filtering effect of the filter element will be redu...
Claims
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IPC IPC(8): H02P7/28G05D16/20C02F1/00
CPCC02F1/001C02F2209/03H02P7/28
Inventor 欧景云李忠慧
Owner GUANGDONG WELLING ELECTRIC MACHINE MFG