IP Library Granted Patent US 8,512,112
Granted Patent B2
US 8,512,112 · App. 11/383,054 · Granted Aug 20, 2013

Methods and apparatus for controlling impurity levels in an enclosed printing press environment

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Quick Facts
Patent No.
US 8,512,112
App. No.
11/383,054
Granted
Aug 20, 2013
Kind
B2
Abstract

Methods and apparatus for controlling impurity levels in an enclosed printing press environment are disclosed. A disclosed system controls impurity levels by using variable speed fans to control the intake of air into the enclosed environment and the exhausting of air from the enclosed environment. The exhaust fan is used to control the impurity levels within the enclosed environment. Adjustments to the speed of the exhaust fan are based on sensors which measure impurity levels in the enclosed environment. The intake fan is used to maintain a constant static pressure level within the enclosed environment. Adjustments to the intake fan speed are based on static pressure sensors within the enclosed environment.

Claims (41)

1. A method of controlling an enclosed environment associated with a solvent recovery system, the method comprising:

receiving a static pressure level measurement associated with an enclosed environment that is associated with a solvent recovery system;

receiving a temperature measurement associated with the enclosed environment;

adjusting a speed associated with a fan based on the static pressure level measurement, wherein the fan is configured to supply air to the enclosed environment; and

adjusting, via a processor, at least one of a heating unit or a cooling unit to maintain a temperature associated with the enclosed environment within a temperature range, wherein at least one of the cooling unit or the heating unit is configured to condition the air supplied by the fan.

2. A method as defined in claim 1 , wherein the solvent recovery system is a printing press solvent recovery system.

3. A method as defined in claim 1 , further comprising preventing an amount of byproducts from a printing press from flowing outside of the enclosed environment.

4. A method as defined in claim 1 , wherein the speed of the fan is adjusted to maintain a static pressure level within the enclosed environment.

5. A method as defined in claim 1 , wherein the at least one of the heating unit or the cooling unit is adjusted to maintain the temperature associated with the enclosed environment based on the temperature measurement and the speed associated with the fan.

6. A method as defined in claim 1 further comprising:

receiving an impurity level measurement associated with the enclosed environment; and

adjusting a second speed associated with a second fan based on the impurity level measurement.

7. A method as defined in claim 6 further comprising adjusting the second speed associated with the second fan based on a lower explosive limit level.

8. An apparatus for controlling an enclosed environment associated with a solvent recovery system, the apparatus comprising:

a processor system including a memory; and

instructions stored in the memory that enable the processor system to:

receive a static pressure level measurement associated with an enclosed environment that is associated with a solvent recovery system;

receive a temperature measurement associated with the enclosed environment;

adjust a speed associated with a fan based on the static pressure level measurement, wherein the fan is configured to supply air to the enclosed environment; and

adjust at least one of a heating unit or a cooling unit to maintain a temperature associated with the enclosed environment within a temperature range, wherein at least one of the cooling unit or the heating unit is configured to condition the air supplied by the fan.

9. An apparatus as defined in claim 8 , wherein the solvent recovery system is a printing press solvent recovery system.

10. An apparatus as defined in claim 8 , wherein the instructions stored in the memory enable the processor system to adjust the speed associated with the fan to prevent an amount of byproducts from a printing press from flowing outside of the enclosed environment.

11. An apparatus as defined in claim 8 , wherein the instructions stored in the memory enable the processor system to adjust the speed associated with the fan to maintain a static pressure level within the enclosed environment.

12. An apparatus as defined in claim 8 , wherein the instructions stored in the memory enable the processor system to adjust the at least one of the heating unit or the cooling unit to maintain the temperature associated with the enclosed environment based on the temperature measurement and the speed associated with the fan.

13. An apparatus as defined in claim 8 , wherein the instructions stored in the memory enable the processor system to:

receive an impurity level measurement associated with the enclosed environment; and

adjust a second speed associated with a second fan based on the impurity level measurement.

14. An apparatus as defined in claim 13 , wherein the instructions stored in the memory enable the processor system to adjust the second speed associated with the second fan based on a lower explosive limit level.

15. A tangible machine accessible medium having instructions stored thereon that, when executed, cause a machine to:

receive a static pressure level measurement associated with an enclosed environment that is associated with a solvent recovery system;

receive a temperature measurement associated with the enclosed environment;

adjust a speed associated with a fan based on the static pressure level measurement, wherein the fan is configured to supply air to the enclosed environment; and

adjust at least one of a heating unit or a cooling unit to maintain a temperature associated with the enclosed environment within a temperature range, wherein at least one of the cooling unit or the heating unit is configured to condition the air supplied by the fan.

16. A machine accessible medium as defined in claim 15 , wherein the solvent recovery system is a printing press solvent recovery system.

17. A machine accessible medium as defined in claim 15 having instructions stored thereon that, when executed, cause the machine to adjust the speed associated with the fan to prevent an amount of byproducts from a printing press from flowing outside of the enclosed environment.

18. A machine accessible medium as defined in claim 15 having instructions stored thereon that, when executed, cause the machine to adjust the speed associated with the fan to maintain a static pressure level within the enclosed environment.

19. A machine accessible medium as defined in claim 15 having instructions stored thereon that, when executed, cause the machine to adjust the at least one of the heating unit or the cooling unit to maintain the temperature associated with the enclosed environment based on the temperature measurement and the speed associated with the fan.

20. A machine accessible medium as defined in claim 15 having instructions stored thereon that, when executed, cause the machine to:

receive an impurity level measurement associated with the enclosed environment; and

adjust a second speed associated with a second fan based on the impurity level measurement.

21. A machine accessible medium as defined in claim 20 having instructions stored thereon that, when executed, cause the machine to adjust the second speed associated with the second fan based on a lower explosive limit level.

Assignments (7)
RELEASE OF SECURITY INTEREST Recorded Dec 16, 2020
From: WILMINGTON TRUST, NATIONAL ASSOCIATION
To: LSC COMMUNICATIONS US, LLC
Reel/Frame 054875/0298 →
TERMINATION AND RELEASE OF SECURITY INTEREST IN PATENTS Recorded Dec 9, 2020
From: BANK OF AMERICA, N.A., AS ADMINISTRATIVE AGENT
To: LSC COMMUNICATIONS US, LLC
Reel/Frame 054660/0875 →
ASSIGNMENT OF PATENT SECURITY AGREEMENTS Recorded Jun 23, 2020
From: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS RESIGNING TRUSTEE AND COLLATERAL AGENT
To: WILMINGTON TRUST, NATIONAL ASSOCIATION, AS SUCCESSOR TRUSTEE AND COLLATERAL AGENT
Reel/Frame 053309/0787 →
SECURITY AGREEMENT Recorded Oct 4, 2016
From: LSC COMMUNICATIONS US, LLC
To: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS COLLATERAL AGENT
Reel/Frame 040213/0791 →
SECURITY AGREEMENT Recorded Oct 4, 2016
From: LSC COMMUNICATIONS US, LLC
To: BANK OF AMERICA, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 040213/0633 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 28, 2016
From: R. R. DONNELLEY & SONS COMPANY
To: LSC COMMUNICATIONS US, LLC
Reel/Frame 040172/0401 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 23, 2006
From: KUMAR, SELVA X.
To: R.R. DONNELLEY & SONS COMPANY
Reel/Frame 018457/0541 →