Hydronic heating system and method for pest control

• US 8,756,857 B2
• Filed: 01/14/2011
• Issued: 06/24/2014
• Est. Priority Date: 01/14/2011
• Status: Expired due to Fees

• Current Assignee: Therma-Stor LLC
• Original Assignee: Technologies Holdings Corporation (Teleflex Incorporated)
• Inventors: DeMonte, Todd R., Ebert, Sean M., Steffes, Michael J.
• Primary Examiner(s): Poon, Peter M
• Assistant Examiner(s): Thompson, Kathryn L
• Application Number:
  US13/007,021
• Publication Number:
  US 20120180381A1
• Time in Patent Office: 1,257 Days
• Field of Search: 431/24, 431/44, 431/30, 431/321, 431/33, 431/38
• US Class Current: 43/132.1
• CPC Class Codes: A01M 1/2094 killing insects by using temperature, e.g. flames, steam or freezing A01M1/22 takes precedence

Abstract

In certain embodiments, a system for killing pests in an affected area includes a burner for heating a fluid. Heat exchanger units are placed within associated regions of the affected area. Each heat exchanger unit receives the fluid from the burner and emits heated air by transferring heat from the fluid to ambient air within the affected area. Air movers are positioned to circulate the heated air emitted by the heat exchanger units and prevent stratification of the heated air. A temperature difference between the fluid received by the heat exchanger units and the ambient air within the affected area results the affected area being raised to a target temperature greater than 122 degrees Fahrenheit.

Claims

1. A system for killing pests in an affected area, comprising:

a burner operable to heat a fluid to a first temperature;

a plurality of heat exchanger units each placed with an associated region of the affected area, each heat exchanger unit configured to receive the fluid from the burner, each heat exchanger unit operable to emit heated air by transferring heat from the fluid to ambient air within the affected area;

a supply manifold positioned between the burner and the plurality of heat exchanger units, the supply manifold comprising;

a first input port configured to receive the fluid via a supply line from the burner; and

a plurality of output ports, each output port being coupled to a selected one of a first plurality of hoses each associated with a respective one of the plurality of heat exchanged units, the plurality of output ports supply the fluid to each of the plurality of heat exchanger units; and

a plurality of air movers positioned to circulate the heated air emitted by the plurality of heat exchanger units and prevent stratification of the heated air, at least one air mover positioned proximate to an associated one of the plurality of heat exchanger units, and

wherein a temperature difference between the fluid received by the plurality of heat exchanger units and the ambient air within the affected area results in the affected area being raised to a target temperature greater than 122 degrees Fahrenheit.

2. The system of claim 1, wherein:

the fluid comprises water-glycol mixture; and

the first temperature is greater than 170 degrees Fahrenheit.

3. The system of claim 1, further comprising a return manifold positioned between the burner and the plurality of heat exchanger units, the return manifold comprising:

a plurality of input ports, each input port being coupled to a selected one of a second plurality of hoses each associated with a respective one of the plurality of heat exchanger units, the plurality of input ports receiving the fluid from each of the plurality of heat exchanger units; and

an output port configured to return the fluid received from the plurality of heat exchanger units to the burner for recirculation, the fluid returned to the burner via a return line.

4. The system of claim 1, wherein the plurality of heat exchanger units comprises at least six heat exchanger units for at least six associated regions of the affected area.

5. The system of claim 1, wherein the plurality of heat exchanger units comprises one heat exchanger unit for every 300 square feet within the affected area.

6. The system of claim 1, wherein the plurality of heat exchanger units comprises at least two heat exchanger units for every 300 square feet within the affected area.

7. The system of claim 1, Wherein a ratio of the air movers to the heat exchanger units is at least one to one.

8. The system of claim 1, wherein each of the plurality of heat exchanger units comprises a thermostat configured to cause an associated heat exchanger unit to:

circulate the heated air when the temperature of the ambient air within the affected area is equal to or below the target temperature; and

cease circulation of the heated air when the temperature of ambient air within the affected area is above the target temperature.

9. The system of claim 1, wherein the plurality of air movers are configured to circulate the heated air received from the plurality of heat exchanger units toward the floor of the affected area.

10. The system of claim 1, wherein a portion of at least one of the first plurality of hoses is coiled to form a pile of coiled hose such that radiant heat from the portion of the at least one of the first plurality of hoses may be transferred to a hard to heat items within the affected area.

11. The system of claim 1, wherein a plurality of contaminated items are separated within the affected area to ensure that each contaminated item is heated throughout to the target temperature.

12. A system for killing pests in an affected area, comprising:

a burner operable to heat a water-glycol fluid mixture to a temperature greater than 170 degrees Fahrenheit;

a supply manifold configured to receive the water-glycol fluid mixture as a single supply fluid stream from the burner, the supply manifold configured to split the single supply fluid stream into a plurality of supply fluid streams, the supply manifold comprising;

a first input port configured to receive the single supply fluid stream via a supply line from the burner; and

a plurality of output ports, each output port being coupled to a selected one of a first plurality of hoses for transporting a selected one of the plurality of fluid streams; and

a plurality of heat exchanger units each placed within an associated region of the affected area, each of the plurality of heat exchanger units coupled to the supply manifold via one of the first plurality of hoses and an associated output port to receive a selected one of the plurality of supply fluid streams, each of the plurality of heat exchanger units operable to emit heated air by transferring heat from the water-glycol fluid mixture to ambient air within the affected area;

a plurality of air movers positioned to circulate the heated air emitted by the plurality of heat exchanger units and prevent stratification of the heated air, at least one air mover positioned proximate to one of the plurality of heat exchanger units; and

a return manifold configured to receive the water-glycol fluid mixture as a plurality of return fluid streams from the plurality of heat exchanger units, the return manifold configured to merge the plurality of return fluid streams into a single return fluid stream and return the single return fluid stream to the burner for recirculation, and

wherein a temperature difference between the water-glycol fluid mixture received by the plurality of heat exchanger units and the ambient air within the affected area results in the affected area being raised to a target temperature greater than 122 degrees Fahrenheit.