# US 7,743,620 B1 · Cooling system

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- Number: US 7,743,620 B1
- Document ID: US7743620B1
- Status: Granted
- Kind: B1
- Application number: 11/761,714
- Filed: 2007-06-12
- Granted: 2010-06-29
- Earliest claimed: 2007-06-12
- Inventors: Ron W. Severson
- Web page: https://patentgrep.com/patent/US7743620B1

## CPC

- F24F 5/0035: {using evaporation}
- F24F 1/022: comprising a compressor cycle
- F24F 11/33: to fire, excessive heat or smoke
- F24F 11/46: Improving electric energy efficiency or saving
- F24F 11/56: Remote control
- F24F 11/30: for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F 2110/10: Temperature
- F24F 2110/20: Humidity
- F24F 2110/40: Pressure, e.g. wind pressure
- Y02B 30/54: Free-cooling systems
- F24F: AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING (removing dirt or fumes from areas where they are produced B08B15/00; vertical ducts for carrying away waste gases from buildings E04F17/02; tops for chimneys or ventilating shafts, terminals for flues F23L17/02)
- Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS

## Abstract

A cooling system for cooling a structure. There is a refrigeration cooling unit; a duct system of the refrigeration cooling unit; an evaporative cooling unit in fluid communication with the attic, and in thermal communication with the duct system; and an exhaust fan providing fluid communication between the attic and an exterior of the structure. The cooling system includes a smoke detector, such that activation of the smoke detector deactivates the evaporative cooling unit. The exhaust fan and the evaporative cooling unit are in logical communication such that activation of the evaporative cooling unit activates the exhaust fan. The exhaust fan is adjacent the duct system. The evaporative cooling unit includes a thermostat in thermal communication with the attic and in control of the evaporative cooling unit according to a threshold temperature of the attic.

## Claims

### Claim 1

A cooling system for cooling a structure, comprising:
a refrigeration cooling unit;
a duct system in fluid communication with the refrigeration cooling unit and extending through an attic of the structure;
an evaporative cooling unit disposed at a first end of the attic, unit in fluid communication with the attic, and in thermal communication with the duct system through air in the attic;
an exhaust fan disposed at a second end of the attic substantially opposite the first end and providing fluid communication between the attic and an exterior of the structure; and
a smoke detector in communication with the evaporative cooling unit such that activation of the smoke detector deactivates the evaporative cooling unit;
wherein the exhaust fan and the evaporative cooling unit are in logical communication such that activation of the evaporative cooling unit activates the exhaust fan.

### Claim 2 (depends on 1)

The cooling system of claim 1, wherein the exhaust fan is adjacent the duct system.

### Claim 3 (depends on 2)

The cooling system of claim 2, wherein the evaporative cooling unit includes a thermostat in thermal communication with the attic and in control of an activation state of the evaporative cooling unit according to a threshold temperature of the attic.

### Claim 4

A cooling system for cooling a structure, consisting essentially of:
a refrigeration cooling unit;
a duct system in fluid communication with the refrigeration cooling unit and extending through an attic of the structure;
an evaporative cooling unit disposed at a first end of the attic, unit in fluid communication with the attic, and in thermal communication with the duct system through air in the attic;
an exhaust fan disposed at a second end of the attic substantially opposite the first end and providing fluid communication between the attic and an exterior of the structure; and
a smoke detector in communication with the evaporative cooling unit such that activation of the smoke detector deactivates the evaporative cooling unit;
wherein the exhaust fan and the evaporative cooling unit are in logical communication such that activation of the evaporative cooling unit activates the exhaust fan.

### Claim 5 (depends on 4)

The cooling system of claim 4, wherein the exhaust fan is adjacent the duct system.

### Claim 6 (depends on 5)

The cooling system of claim 5, wherein the evaporative cooling unit includes a thermostat in thermal communication with the attic and in control of an activation state of the evaporative cooling unit according to a threshold temperature of the attic.