Automatic cleaning of adiabatic condenser cooling pads

Patent metadata

Field	Value
Publication number	US-11867442-B2
Application number	US-202117344335-A
Country	US
Kind code	B2
Filing date	Jun 10, 2021
Priority date	Jun 10, 2021
Publication date	Jan 9, 2024
Grant date	Jan 9, 2024

Abstract

An adiabatic cooling system includes a condenser coil and one or more adiabatic pads positioned such that intake air for the adiabatic cooling system passes through the pads prior to contacting the condenser coil. The adiabatic cooling system includes a vibration device attached to each adiabatic pad. A controller is communicatively coupled to the vibration device for each of the adiabatic pads. The controller determines that cleaning of the adiabatic pads is needed. In response to detecting cleaning is needed, the controller causes the vibration device attached to each adiabatic pad to vibrate, thereby causing debris in the one or more adiabatic pads to become loosened and/or removed from the adiabatic pads.

First claim

What is claimed is:

1. An adiabatic cooling system, comprising:
a condenser coil;
one or more adiabatic pads positioned such that intake air for the adiabatic cooling system passes through the one or more adiabatic pads prior to contacting the condenser coil;
for each of the one or more adiabatic pads, a vibration device attached to the adiabatic pad, the vibration device comprising an electromechanically responsive portion, wherein the electromechanically responsive portion is operable to physically vibrate;
and a controller communicatively coupled to the vibration device for each of the one or more adiabatic pads, the controller comprising a processor configured to:
determine that cleaning of the one or more adiabatic pads should be initiated; and
provide an electronic signal to the vibration device attached to each of the one or more adiabatic pads, wherein the electronic signal is configured to cause the electromechanically responsive portion of the vibration device for each of the one or more adiabatic pads to physically vibrate, thereby causing debris in the one or more adiabatic pads to become one or both of loosened and removed from the one or more adiabatic pads.

2. The adiabatic cooling system of claim 1 , further comprising:
a first pressure sensor positioned and configured to measure an input air pressure on an input side of the one or more adiabatic pads;
a second pressure sensor positioned and configured to measure an output air pressure on an output side of the one or more adiabatic pads;
wherein the controller is further communicatively coupled to the first pressure sensor and the second pressure sensor, and the processor determined that cleaning of the one or more adiabatic pads should be initiated by:
determining, based on the input air pressure and the output air pressure, an air pressure drop across the one or more adiabatic pads; and
determining that the air pressure drop is greater than a threshold value.

3. The adiabatic cooling system of claim 1 , further comprising:
a water distributor comprising a tube, one or more outlets, and a valve, wherein the water distributor is operable, when the valve is in an open position, to provide a flow of water through the one or more outlets onto the one or more adiabatic pads;
wherein the controller is further communicatively coupled to the valve of the water distributor, and the processor is configured to, after providing the electronic signal to the vibration device, cause the valve to open such that the water distributor provides the flow of water onto the one or more adiabatic pads.

4. The adiabatic cooling system of claim 1 , wherein the electronic signal provided to the vibration device causes the electromechanically responsive portion of the vibration device to physically vibrate at a frequency within a threshold value of a resonance frequency of the adiabatic pad on which it is attached.

5. The adiabatic cooling system of claim 1 , further comprising a pad pivoting system comprising a rack portion, a pinion portion, and a motor, wherein the motor is operable to turn the pinion portion and thereby cause the one or more adiabatic pads to rotate about a corresponding pivot point.

6. The adiabatic cooling system of claim 5 , wherein the controller is further communicatively coupled to the pad pivoting system, and the processor is configured to, after providing the electronic signal to the vibration device, cause the one or more adiabatic pads to rotate about the corresponding pivot point.

7. The adiabatic cooling system of claim 1 , wherein the processor determined that cleaning of the one or more adiabatic pads should be initiated based on a predetermined schedule or timer.

8. The adiabatic cooling system of claim 1 , further comprising:
an air flow rate sensor operable to measure a flow rate of air through the one or more adiabatic pads;
wherein the processor is further communicatively coupled to the air flow rate sensor and determined that cleaning of the one or more adiabatic pads should be initiated by determining that the measured flow rate of air through the one or more adiabatic pads is less than a predefined threshold value.

9. An adiabatic cooling system, comprising:
one or more adiabatic pads;
for each of the one or more adiabatic pads, a vibration device attached to the adiabatic pad, the vibration device comprising an electromechanically responsive portion, wherein the electromechanically responsive portion is operable to physically vibrate; and
a controller communicatively coupled to the vibration device for each of the one or more adiabatic pads, the controller comprising a processor configured to:
determine that cleaning of the one or more adiabatic pads should be initiated; and
provide an electronic signal to the vibration device attached to each of the one or more adiabatic pads, wherein the electronic signal is configured to cause the electromechanically responsive portion of the vibration device for each of the one or more adiabatic pads to physically vibrate, thereby causing debris in the one or more adiabatic pads to become one or both of loosened and removed from the one or more adiabatic pads.

10. The adiabatic cooling system of claim 9 , further comprising:
a first pressure sensor positioned and configured to measure an input air pressure on an input side of the one or more adiabatic pads;
a second pressure sensor positioned and configured to measure an output air pressure on an output side of the one or more adiabatic pads;
wherein the controller is further communicatively coupled to the first pressure sensor and the second pressure sensor, and the processor determined that cleaning of the one or more adiabatic pads should be initiated by:
determining, based on the input air pressure and the output air pressure, an air pressure drop across the one or more adiabatic pads; and
determining that the air pressure drop is greater than a threshold value.

11. The adiabatic cooling system of claim 9 , further comprising:
a water distributor comprising a tube, one or more outlets, and a valve, wherein the water distributor is operable, when the valve is in an open position, to provide a flow of water through the one or more outlets onto the one or more adiabatic pads;
wherein the controller is further communicatively coupled to the valve of the water distributor, and the processor is configured to, after providing the electronic signal to the vibration device, cause the valve to open such that the water distributor provides the flow of water onto the one or more adiabatic pads.

12. The adiabatic cooling system of claim 9 , wherein the electronic signal provided to the vibration device causes the electromechanically responsive portion of the vibration device to physically vibrate at a frequency within a threshold value of a resonance frequency of the adiabatic pad on which it is attached.

13. The adiabatic cooling system of claim 9 , further comprising a pad pivoting system comprising a rack portion, a pinion portion, and a motor, wherein the motor is operable to turn the pinion portion and thereby cause the one or more adiabatic pads to rotate about a corresponding pivot point.

14. The adiabatic cooling system of claim 13 , wherein the controller is further communicatively coupled to the pad pivoting system, and the processor is configured to, after providing the electronic signal to the vibration device, cause the one or more adiabatic pads to rotate about the corresponding pivot point.

15. The adiabatic cooling system of claim 9 , wherein the processor determined that cleaning of the one or more adiaba

Assignees

• Heatcraft Refrigeration Products Llc

Inventors

• Kuppusamy Karthick

Classifications

• F25B49/027 Primary

  Condenser control arrangements · CPC title

• F25B39/04

  Condensers · CPC title

• F28G7/00

  Cleaning by vibration {or pressure waves} · CPC title

• F25B2700/195

  of the condenser · CPC title

• F24F1/42 Primary

  characterised by the use of the condensate, e.g. for enhanced cooling · CPC title