Abstract: A filter element assembly and a water purifier. The filter element assembly includes: a first housing having a first water port, a second water port, a third water port, and a fourth water port; a first filter element having a first water channel and a second water channel; a second housing; a second filter element, a third water channel and a fourth water channel being provided at an outer periphery and an inner periphery of the second filter element, respectively; a first pipeline connected between the third water port and a fifth water port and arranged in the second water channel; and a second pipeline connected between the fourth water port and a sixth water port arranged within the second water channel and spaced apart from the first pipeline.

Abstract: A filter cartridge device is disclosed, which includes a water stopping assembly (13) and automatic water locking assemblies (22); wherein the water stopping assembly (13) can control water supply or water cut-off of the filter cartridge device, and prevent residual water inside a filter cavity (111) from flowing out during the process of detaching the filter cartridge device; the automatic water locking assemblies (22) can control water supply or water cut-off between the filter cartridge device and an external pipe, and prevent water inside the external pipe from flowing out during the process of detaching the filter cartridge device; and the water stopping assembly (13) controls water supply or water cut-off of on its side. In addition, a water purifier comprising the filter cartridge device is also disclosed.

Abstract: A filter cartridge device is disclosed, which includes a water stopping assembly (13) and automatic water locking assemblies (22); wherein the water stopping assembly (13) can control water supply or water cut-off of the filter cartridge device, and prevent residual water inside a filter cavity (111) from flowing out during the process of detaching the filter cartridge device; the automatic water locking assemblies (22) can control water supply or water cut-off between the filter cartridge device and an external pipe, and prevent water inside the external pipe from flowing out during the process of detaching the filter cartridge device; and the water stopping assembly (13) controls water supply or water cut-off of on its side. In addition, a water purifier comprising the filter cartridge device is also disclosed.

Abstract: Disclosed is a water purification device based on filter cartridge anti-counterfeiting identification, comprising a filter cartridge assembly (1), a booster pump (2) and a membrane filter assembly (3); a water inlet and a water outlet of the filter cartridge assembly (1) are connected respectively to a water supply pipe and the booster pump (2), the water outlet of the booster pump is connected to a water inlet of the membrane filter assembly (3). The filter cartridge assembly (1) and the membrane filter assembly (3) are respectively provided with an identification chip to be identified and paired with an identifier installed on the water purification device; the booster pump (2) is connected to the identifier; the identifier transmits a signal to propel the booster pump (2) to work only after the identification chips are identified and paired with the identifier.

Abstract: Disclosed is an air purifier based on filter anti-counterfeiting identification, comprising a purifier body (1) in which control circuitry and a purifying chamber are provided; a filter (2) is arranged in the purifying chamber; the filters (2) are paired and coupled with the purifier body (1) via an identification unit; the identification unit comprises an identification chip configured on the filter (2) and an identifier configured on the purifier body (1); the identifier is connected with the control circuitry; the control circuitry is powered on and starts to operate until the pairing between the identification chip and the identifier succeeds. The identification process can identify multiple objects without manual intervention. Moreover, it responds quickly and no mechanical malfunction will happen. Thus, the air purifier can operate under harsh environment and serve for a long time. In this manner, counterfeits can be effectively prevented and quality of products can be guaranteed.

Abstract: Disclosed is a water purification device based on filter cartridge anti-counterfeiting identification, comprising a filter cartridge assembly (1), a booster pump (2) and a membrane filter assembly (3); a water inlet and a water outlet of the filter cartridge assembly (1) are connected respectively to a water supply pipe and the booster pump (2), the water outlet of the booster pump is connected to a water inlet of the membrane filter assembly (3). The filter cartridge assembly (1) and the membrane filter assembly (3) are respectively provided with an identification chip to be identified and paired with an identifier installed on the water purification device; the booster pump (2) is connected to the identifier; the identifier transmits a signal to propel the booster pump (2) to work only after the identification chips are identified and paired with the identifier.