Abstract: A water purifier includes a filter head, a flow channel control module, and a filter element. The flow channel control module includes a waterway board and a flow manifold. The waterway board is provided with a water flow channel. The flow manifold is provided with a first passage and a second passage. When the flow manifold is driven by the filter element and rotated relative to the waterway board to a first position where the first passage is connected to the water flow channel, the flow channel control module is switched to a first flow channel waterway mode (or filter mode). When the flow manifold is driven by the filter element and rotated to a second position where the second passage is connected to the water flow channel, the flow channel control module is switched to a second flow channel waterway mode (or replacement mode).

Abstract: A water purifier structure includes a container assembly and a buffer unit mounted in the container assembly. The container assembly includes a housing and a cap unit. The housing has a first receiving section and a second receiving section. The second receiving section of the housing is provided with a retaining portion. The buffer unit is mounted in the second receiving section of the housing and includes a positioning ring secured in the retaining portion of the housing, and a cushioning member mounted in the positioning ring. The cushioning member is elastically movable in the positioning ring. When the cushioning member is compressed by a force, the cushioning member is contracted and elastically deformed toward the second receiving section of the housing, to form a buffering force.

Abstract: A control system has a water purification module and a control module. The water purification module has a preliminary filter and a reverse osmosis filter. The control module regularly controls the purification and the drainage of the water purification module, and solves the problem that the TDS value of the water on both sides of the reverse osmosis membrane is too high after the water purifier is on standby for a period of time. The control system regularly drains high concentration water on both sides of the reverse osmosis membrane to improve water purification efficiency.

Abstract: The present invention discloses a filter with an automatic control of flow, which contains a housing having a water inlet and a water outlet on one end, a bottom cover connecting to the other end of the housing and a filter material provided in the housing, comprising an outlet end fluidly connecting with the water outlet through a flow control unit. Based on the structure design of the flow control unit, the filter of the present invention can remind users to replace the filter materials in an easy and visible way at the time when the filter materials reach the end of working period.

Abstract: A filter cartridge having double threads is provided, and has a housing and a cap. The housing is opaque and provided with a connecting portion, a filter containing portion and a bottom portion. The housing and the cap are tightly connected to each other by a connector. When the housing and the cap are assembled via the connector, various types of threads and shapes of the bottom portion of the housing can be selected. Additionally, users can conveniently observe the using condition of a filter media through an opened window formed on an outer circumference surface of the bottom portion of the housing and a transparent base, so that the user can then directly decide whether the filter media should be changed or not.

Abstract: A filter assembly that includes a filter housing having a radio frequency identification reader and a blocker; and a filter cartridge insertable into the filter housing having a radio frequency identification tag that the radio frequency reader on the housing can read to determine if the filter cartridge is of the proper type. When the proper filter cartridge is inserted in the filter housing and the tag is matched by the radio frequency identification reader, the blocker will allow the cartridge to go in. When the radio frequency identification reader does not match the tag on the filter cartridge, the blocker will prevent the filter cartridge from being fully inserted into the housing.