System for determining force imparted by a filter in a variable force environment and related methods of use

• US 9,174,156 B2
• Filed: 04/03/2015
• Issued: 11/03/2015
• Est. Priority Date: 04/04/2014
• Status: Active Grant

• Current Assignee: Magni-Power Company
• Original Assignee: Magni-Power Company
• Inventors: Scofield, William H.
• Primary Examiner(s): CLEMENTE, ROBERT ARTHUR
• Application Number:
  US14/678,802
• Publication Number:
  US 20150285517A1
• Time in Patent Office: 214 Days
• US Class Current: 1/1
• CPC Class Codes: B01D 46/0086 Filter condition indicators
• CPC Class Codes: B01D 46/44 controlling filtration
• CPC Class Codes: F24F 11/30 for purposes related to the operation of the system, e.g. for safety or monitoring
• CPC Class Codes: F24F 11/39 Monitoring filter performance
• CPC Class Codes: F24F 11/63 Electronic processing
• CPC Class Codes: F24F 8/108 using dry filter elements
• CPC Class Codes: G01L 1/26 Auxiliary measures taken, or devices used, in connection with the measurement of force, e.g. for preventing influence of transverse components of force, for preventing overload
• CPC Class Codes: G01N 15/082 Investigating permeability by forcing a fluid through a sample
• CPC Class Codes: G01N 2015/084 Testing filters
• CPC Class Codes: Y02A 50/20 Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Abstract

A control system for a variable flow filtration system that is configured for receiving an operating condition of a variable speed impeller of the variable flow filtration system; determining a threshold filter force associated with the received operating condition to determine an increased threshold filter force proportionally to increases in the received operating condition; receiving one or more real-time environmental conditions of the variable flow filtration system; modifying the determined threshold filter force based on the received one or more real-time environmental conditions; receiving a real-time filter force imparted by a filter of the variable flow filtration system on a load cell or other filtration system component, the filter force being imparted by a flow of gas or fluid driven by the variable speed impeller; comparing the received real-time filter force to the modified determined threshold filter force; and generating a filter status notification based on the comparison.

Claims

1. A computer-implemented method of generating a filter status notification or signal of a filter in a variable flow environment, the computer-implemented method comprising:

receiving an operating condition including one or more of a fan setting, a pump setting, an intensity setting, a fan speed, a rotational velocity, a voltage, a current, an air/fluid flow rate, and a force associated with a variable speed impeller of a filtration system;

determining a threshold filter force associated with the received operating condition to determine an increased threshold filter force proportionally to increases in one or more of the fan setting, the pump setting, the intensity setting, the fan speed, the rotational velocity, the voltage, the current, the air/fluid flow rate, and the force associated with the variable speed impeller of the filtration system;

receiving one or more real-time environmental conditions including one or more of a temperature measurement, a humidity measurement, an air or fluid density measurement, an altitude measurement, and an air or fluid pressure measurement of the filtration system;

modifying the determined threshold filter force based on the received one or more real-time environmental conditions (i) to decrease the determined threshold filter force proportionally to increases in the temperature measurement and/or proportionally to increases in the altitude measurement; and

(ii) to increase the determined threshold filter force proportionally to increases in the humidity measurement, to increases in the air or fluid density measurement, and/or to increases in the air or fluid pressure measurement of the filtration system;

receiving, from a load cell, a real-time filter force imparted by a filter of the filtration system on the load cell and/or a component of the filtration system, the force of the filter on the component being imparted by a flow of gas or fluid driven by the variable speed impeller;

comparing the received real-time filter force to the modified determined threshold filter force; and

generating a filter status notification or signal based on the comparison of the real-time filter force to the determined threshold filter force.

2. The computer-implemented method of claim 1, wherein the operating condition is received from the variable speed impeller of the filtration system.

3. The computer-implemented method of claim 1, wherein the real-time environmental condition is received from a sensor positioned in the filtration system.

4. The computer-implemented method of claim 1, wherein the received operating condition is received continuously in real-time, the one or more real-time environmental conditions are received continuously in real-time, and the real-time filter force is received from the load cell continuously in real-time.

5. The computer-implemented method of claim 1, wherein the received operating condition is received at a first predetermined interval, the one or more real-time environmental conditions are received at a second predetermined interval, and the real-time filter force is received from the load cell at a third predetermined interval, wherein the first, second, and third predetermined intervals are different from each other or the same.

6. A control system for a variable flow filtration system, the control system comprising:

a digital data storage device storing instructions for generating a filter status notification or signal; and

a processor configured to execute the stored instructions to perform a method comprising;

receiving, from a variable speed impeller of the variable flow filtration system, an operating condition of the variable speed impeller of the filtration system;

determining a threshold filter force associated with the received operating condition to determine an increased threshold filter force proportionally to increases in the received operating condition;

receiving one or more real-time environmental conditions of the variable flow filtration system;

modifying the determined threshold filter force based on the received one or more real-time environmental conditions;

receiving, from a load cell, a real-time filter force imparted by a filter of the variable flow filtration system on the load cell or on a component of the variable flow filtration system, the force of the filter being imparted by a flow of gas or fluid driven by the variable speed impeller;

comparing the received real-time filter force to the modified determined threshold filter force; and

generating a filter status notification or signal based on the comparison of the real-time filter force to the determined threshold filter force.

7. The control system of claim 6, wherein the one or more operating conditions includes one or more of:

a fan setting, a pump setting, an intensity setting, a fan speed, a rotational velocity, a voltage, a current, an air/fluid flow rate, and a force associated with the variable speed impeller of the filtration system.

8. The control system of claim 6, wherein the one or more environmental conditions include one or more of:

a temperature measurement, a humidity measurement, an air or fluid density measurement, an altitude measurement, and an air or fluid pressure measurement of the filtration system.

9. The control system of claim 6, wherein modifying the determined threshold filter force based on the received one or more real-time environmental conditions comprises (i) decreasing the determined threshold filter force proportionally to increases in the temperature measurement and/or proportionally to increases in the altitude measurement;

and (ii) increasing the determined threshold filter force proportionally to increases in the humidity measurement, to increases in the air or fluid density measurement, and/or to increases in the air or fluid pressure measurement of the filtration system.

10. The control system of claim 6, wherein the load cell is mounted at an upstream or downstream surface of the filter.

11. The control system of claim 6, wherein the load cell is configured to measure a compressive or tensile force exerted by the filter.

12. A variable flow filtration system comprising:

a filter disposed across a flow of fluid or gas;

a load cell disposed between the filter and a component of the variable flow filtration system;

a variable speed impeller configured to drive fluid or gas through the filter of the variable flow filtration system; and

a controller configured to;

receive, from the variable speed impeller of the variable flow filtration system, one or more operating conditions of the variable speed impeller of the filtration system;

determine a threshold filter force associated with the one or more received operating conditions to determine an increased threshold filter force proportionally to increases in the received operating condition;

receive one or more real-time environmental conditions of the variable flow filtration system;

modify the determined threshold filter force based on the received one or more real-time environmental conditions;

receive, from the load cell, a real-time filter force imparted by the filter of the variable flow filtration system on the load cell or the component of the variable flow filtration system;

compare the received real-time filter force to the modified determined threshold filter force; and

generate a filter status notification or signal based on the comparison of the real-time filter force to the determined threshold filter force.

13. The variable flow filtration system of claim 12, wherein the load cell is mounted at an upstream or downstream surface of the filter.

14. The variable flow filtration system of claim 12, wherein the load cell is configured to measure a compressive or tensile force exerted by the filter.

15. The variable flow filtration system of claim 12, wherein the received operating condition is received continuously in real-time, the one or more real-time environmental conditions are received continuously in real-time, and the real-time filter force is received from the load cell continuously in real-time.

16. The variable flow filtration system of claim 12, wherein the received operating condition is received at a first predetermined interval, the one or more real-time environmental conditions are received at a second predetermined interval, and the real-time filter force is received from the load cell at a third predetermined interval, wherein the first, second, and third predetermined intervals are different from each other or the same.

17. The variable flow filtration system of claim 12, wherein the real-time filter force is received from the load cell continuously in real-time, the one or more received operating conditions are received at a first predetermined interval, and the one or more real-time environmental conditions are received at a second predetermined interval different from the first predetermined interval.

18. The variable flow filtration system of claim 12, wherein the one or more operating conditions includes one or more of:

a fan setting, a pump setting, an intensity setting, a fan speed, a rotational velocity, a voltage, a current, an air/fluid flow rate, and a force associated with the variable speed impeller of the filtration system.

19. The variable flow filtration system of claim 12, wherein the one or more environmental conditions include one or more of:

a temperature measurement, a humidity measurement, an air or fluid density measurement, an altitude measurement, and an air or fluid pressure measurement of the filtration system.

20. The variable flow filtration system of claim 19, wherein modifying the determined threshold filter force based on the received one or more real-time environmental conditions comprises (i) decreasing the determined threshold filter force proportionally to increases in the temperature measurement and/or proportionally to increases in the altitude measurement;

and (ii) increasing the determined threshold filter force proportionally to increases in the humidity measurement, to increases in the air or fluid density measurement, and/or to increases in the air or fluid pressure measurement of the filtration system.