System and method for a filter system

Patent metadata

Field	Value
Publication number	US-11273394-B2
Application number	US-202016812992-A
Country	US
Kind code	B2
Filing date	Mar 9, 2020
Priority date	Sep 12, 2017
Publication date	Mar 15, 2022
Grant date	Mar 15, 2022

Abstract

A filter for use in filtering a fluid slurry that includes particles of varying size, such as pool water including debris, is provided. The filter is in electrical communication with a sensor and includes a housing having an inlet to receive the fluid slurry, an outlet, and an internal chamber. An actuator can be coupled to the filter media to move at least a portion of the filter media to vary a dimension of the pores. The filter also includes a controller connected to the actuator that is capable of receiving a signal from the sensor and controls the actuator to change the dimension of the pores based on the signal.

First claim

The invention claimed is:

1. A filter comprising:
a housing having an inlet to receive a fluid, and an outlet to discharge filtrate;
filter media positioned in an internal chamber of the housing, the filter media having pores, wherein the filter media includes wedge wire rings having magnets coupled to a surface on at least a portion of the wedge wire rings;
an actuator coupled to the filter media to move at least a portion of the filter media; and
a controller communicatively coupled to the actuator, the controller configured to control the actuator to change a dimension of the pores.

2. The filter of claim 1 , wherein the filter media divides the internal chamber between a filtrate side coupled to the outlet and an inlet side connected to the inlet.

3. The filter of claim 1 , further comprising at least one sensor configured to generate a signal, wherein the actuator changes the dimension of the pores based on the signal.

4. The filter of claim 3 , wherein the signal includes at least one of a temperature, a pressure, a flow rate, a fluid level, a fluid density, a count, or an operation time.

5. The filter of claim 3 , wherein the at least one sensor includes a pressure sensor and the signal includes a pressure signal.

6. The filter of claim 1 , wherein the actuator moves to vary the dimension of the pores within the filter media between a fully-open dimension of the pores, a fully-closed dimension of the pores, and positions therebetween.

7. The filter of claim 5 , wherein the actuator reduces the dimension of the pores when the pressure signal approaches one of a linear state, a predetermined static state, or a dynamic state.

8. The filter of claim 1 , wherein the magnets are aligned on the wedge wire rings to repel each other to create a space between the wedge wire rings, and wherein the dimension of the pores in the filter media is defined by the space between the wedge wire rings.

9. The filter of claim 8 , wherein the surface of the wedge wire rings is defined by a tab that radially projects from the wedge wire rings, wherein the surface of the tab includes a recessed portion configured to receive at least one magnet.

10. The filter of claim 8 , wherein the wedge wire rings further include at least one aperture configured to receive a support rod that extends longitudinally along at least a portion of the internal chamber, and wherein the wedge wire rings are configured to move longitudinally along the support rod.

11. The filter of claim 8 , wherein the actuator is coupled to the wedge wire rings, and wherein the controller causes the actuator to vary the dimension of the pores between a fully-open dimension of the pores, a fully-closed dimension of the pores, and positions therebetween by compressing or expanding the wedge wire rings.

12. The filter of claim 11 , wherein the actuator linearly displaces a pressing member that is coupled to the wedge wire rings to compress or expand the filter media.

13. The filter of claim 1 , wherein the filter media includes a first sieve having a plurality of first fluid channels that extend through the first sieve, the first fluid channels having a plurality of tapered walls that mate with a plurality of tapered projections extending from a second sieve having a plurality of second fluid channels positioned between the plurality of tapered projections.

14. The filter of claim 13 , wherein the first sieve is fixed to an internal wall of the housing and the second sieve is coupled to the actuator, and wherein the controller causes the actuator to vary the dimension of the pores between a fully-open dimension of the pores, a fully-closed dimension of the pores, and positions therebetween by altering a distance between the plurality of tapered projections of the second sieve and the plurality of tapered walls of the first sieve.

15. The filter of claim 2 , wherein the filter further includes a backwash inlet in fluid communication with the filtrate side of the filter and a backwash outlet in fluid communication with the inlet side of the filter.

16. A filtration system comprising:
a filter comprising a housing having an inlet to receive a fluid, an outlet to discharge filtrate, an internal chamber in fluid communication with the inlet and the outlet, filter media positioned in the internal chamber, the filter media having pores, wherein the filter media includes wedge wire rings having magnets coupled to a surface on at least a portion of the wedge wire rings; and
an actuator coupled to the filter media to move at least a portion of the filter media to vary a dimension of the pores.

17. The filtration system of claim 16 further comprising:
a filtrate line that places the outlet of the filter in fluid communication with a filtrate reservoir, and
wherein the filtrate line further includes a first filtrate valve downstream of the filter.

18. The filtration system of claim 17 , wherein the filtrate line is in fluid communication with an outlet of a backwash filter, and wherein the filtrate line further includes a second filtrate valve downstream of the backwash filter.

19. The filtration system of claim 16 , wherein the actuator engages a lead screw to linearly displace a pressing member that is coupled to the wedge wire rings to compress or expand the filter media.

20. The filtration system of claim 16 , wherein the actuator axially displaces a plurality of pressing members, each of the plurality of pressing members including a movable plate and a cylinder.

Assignees

• Pentair Water Pool & Spa Inc

Inventors

• Stiles Jr Robert W
• Robol Ronald B
• Cox Everett Franklin
• Safon Thomas Johnson Ray
• Saini Anuj
• Victor Alex

Classifications

• B01D29/15 Primary

  arranged for inward flow filtration · CPC title

• B01D2201/583

  using the kinetic energy of the fluid circulating in the filtering device · CPC title

• B01D29/682

  with a rotary movement with respect to the filtering element · CPC title

• B01D2201/29

  Filter cartridge constructions · CPC title

• B01D29/48

  of spirally or helically wound bodies · CPC title