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EP-4527482-B1 - FILTER ELEMENT ASSEMBLY, FILTER, WATER PATH CONTROL SYSTEM, AND WATER HEATER

EP4527482B1EP 4527482 B1EP4527482 B1EP 4527482B1EP-4527482-B1

Inventors

  • ZHAO, Renzhuang
  • WANG, MING

Dates

Publication Date
20260513
Application Date
20210322

Claims (11)

  1. A filter (100), comprising: a filter bottle (300), a cavity being formed inside the filter bottle (300), the filter bottle (300) being provided with a water inlet pipe (220) and a water outlet pipe (230) which are in communication with the cavity; a filter element assembly (400) provided in the cavity, the filter element assembly (400) being configured to filter raw water, inputted through the water inlet pipe (220), to generate purified water, and the purified water being outputted through the water outlet pipe (230); a sensor component comprising a flow measurement element provided in the water inlet pipe (220) and/or the water outlet pipe (230), and a temperature measurement element provided in the water inlet pipe (220) and/or the water outlet pipe (230), characterized by that the flow measurement element is a magnetic rotor configured to generate a magnetic field signal that varies with a flow rate of water.
  2. The filter (100) of claim 1, wherein the magnetic rotor comprises: an outer frame provided in the water inlet pipe (220) and/or the water outlet pipe (230); and an impeller rotatably arranged in the outer frame, wherein the impeller is configured to be driven by water flow to rotate, and to generate the magnetic field signal that varies with the flow rate of the water,
  3. The filter (100) of claim 1, wherein the flow measurement element further comprises: a Hall element provided on the filter bottle (300), wherein the Hall element corresponds to the magnetic rotor, and is configured for receiving the magnetic field signal from the magnetic rotor.
  4. The filter (100) of claim 3, wherein the Hall element is detachably provided on the filter bottle (300).
  5. The filter (100) of any one of claims 1-4, wherein: the filter element assembly (400) is hollow, and a first water filtering cavity (700) is formed inside the filter element assembly (400); a second water inlet cavity (600) is formed between an outer wall of the filter element assembly (400) and an inner wall of the cavity; the water inlet pipe (220) is in communication with the second water inlet cavity (600), the water outlet pipe (230) is in communication with the first water filtering cavity (700), the raw water in the second water inlet cavity (600) is filtered by the filter element assembly (400) and then flows into the first water filtering cavity (700); or the water inlet pipe (220) is in communication with the first water filtering cavity (700), the water outlet pipe (230) is in communication with the second water inlet cavity (600), the raw water in the first water filtering cavity (700) is filtered by the filter element assembly (400) and then flows into the second water inlet cavity (600).
  6. The filter (100) of claim 5, wherein the filter element assembly (400) comprises: a filter element frame (410) provided in the cavity and fixed to an inner wall of the filter bottle (300), and the filter element frame (410) being hollow, a filter medium provided on an inner surface and/or an outer surface of the filter element frame (410) and configured to filter the raw water to generate the purified water.
  7. The filter (100) of claim 6, wherein: an end of the filter bottle (300) has an opening; a mounting cap (210) is provided at the opening of the filter bottle (300) to close the cavity; the water inlet pipe (220) and the water outlet pipe (230) are provided on the mounting cap (210); one end of the filter element frame (410) is connected to the mounting cap (210), the other end of the filter element frame (410) abuts on an end of the filter bottle (300) away from the mounting cap (210).
  8. The filter (100) of claim 7, wherein a mesh cover (500) is provided between the filter element frame (410) and the mounting cap (210), wherein an end of the filter element frame (410) is fixed to the mesh cover (500), wherein the mesh cover (500) is provided with filter holes for communicating with the water filtering cavity (700), wherein a filter grid is provided outside the mesh cover (500), wherein the filter grid extends into the water inlet cavity (600) and abuts an inner wall of the filter bottle (300), and wherein a water flow channel for communicating with the water inlet cavity (600) is formed between adjacent filter grids.
  9. The filter (100) of claim 5, wherein the first water filtering cavity (700) and/or the second water inlet cavity (600) is provided with a magnetizing element (30).
  10. A water way control system, comprising a processor, a water way opening and closing actuator and a filter (100) of any one of claims 1 to 9, wherein the processor is electrically connected to the water way opening and closing actuator and to the filter (100) respectively.
  11. A water heater, comprising a filter (100) of any one of claims 1 to 9 or a water way control system of claim 10.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS TECHNICAL FIELD The present disclosure relates to the technical field of filtering devices, and in particular, to a filter element assembly, a filter and a water heater. BACKGROUND The filter element frame, as a component in the filter, is mainly used to support the filter screen on the outer surface. There are many permeable holes on the filter element frame, raw water passing through the filter screen can flow into the inner cavity of the filter element frame through the permeable holes, and then flow out from the water outlet at an end of the filter element frame. Compared with the filter whose water inlet and water outlet are provided at the same end, in the related art, the permeable holes on the filter element frame of the filter are evenly distributed in the length direction of the filter element frame. As a result, during use, the closer the filter element frame is to the water outlet, the greater pressure difference exists in the water. Therefore, the higher the usage rate of the filter screen is, the faster the dirt accumulates. As a result, it is easy to cause the problem that the filter screen is partially blocked. US 6,936,160 B2 discloses a sensor component that may be used in conjunction with a filter module may include a plurality of sensor packages. The latter, in turn, may incorporate one or more micro-electromechanical systems (MEMS) sensors to measure various characteristics of fluid flow and filtration. A single sensor component may be adapted to measure the pressure, temperature, flow rate, differential pressure, conductivity, viscosity, pH level, etc. of the fluid at an upstream and a downstream location. Sensor measurements may be obtained continuously in order to monitor and indicate fluid conditions, including the use of a warning mechanism to indicate an out-of-range condition when the measurements fall outside of pre-set limits. Depending on the application and the fluid being filtered, data, including measurement data, may be transmitted through electrical connections or wirelessly. In wireless configurations, a sleep-mode may be included to maximize the life of local power supplies. US 6,377,171 B1 discloses a monitoring system for monitoring the condition of a filter filtering a gas or liquid. Using various sensors, the permeability of the filter is monitored on a continuous basis. A significant increase in permeability, decrease in permeability or rate of change of permeability can lead to an indication of filter failure, such as rupture, leakage, loading and unloading. The system can be monitored by a computer and monitored from a remote location through phone lines and Internet computer systems. SUMMARY The main objective of the present disclosure is to provide a filter element assembly, which aims to solve the problem that the filter screen is partially blocked during the use of the existing filter element assembly. In order to achieve the above objective, the present disclosure provides a filter element assembly, including: a filter element frame. The filter element frame has a water filtering cavity, an end of the water filtering cavity is a water outlet, the filter element frame has a perforated structure adjacent to the water outlet, the perforated structure has a plurality of permeable holes communicating with the water filtering cavity, and the perforated structure has an opening ratio increasing continuously or stepwise along a direction away from the water outlet. In an embodiment, the opening ratio of the perforated structure is increased stepwise along the direction away from the water outlet. In an embodiment, the perforated structure includes a first perforated portion adjacent to the water outlet and a second perforated portion remote to the water outlet, each permeable hole of the first perforated portion is of an identical area, and each permeable hole of the second perforated portion is of an identical area. In an embodiment, the permeable holes of the first perforated portion and the permeable holes of the second perforated portion are arranged in a matrix and are provided in the perforated structure, and each permeable hole of the first perforated portion is smaller than each permeable hole of the second perforated portion in area. In an embodiment, the permeable holes of the first perforated portion are circular, and the permeable holes of the second perforated portion are rectangular. In an embodiment, the first perforated portion accounts for 1/4~2/5 of a length of the filter element frame, and the second perforated portion accounts for 2/5~1/2 of the length of the filter element frame. In an embodiment, a periphery of each permeable hole is provided with a convex rib. In an embodiment, a magnetic member is arranged on an end of the filter element frame opposite to the water outlet. In an embodiment, a scale inhibitor is placed in the water filtering cavity of the filter element frame. In an embodiment, the filte