Portable heating system and method for pest control

• US 9,237,742 B2
• Filed: 01/30/2014
• Issued: 01/19/2016
• Est. Priority Date: 01/25/2011
• Status: Active Grant

• Current Assignee: Therma-Stor LLC
• Original Assignee: Technologies Holdings Corporation (Teleflex Incorporated)
• Inventors: O'Brien, Timothy S., Camenga, Eric P.
• Primary Examiner(s): Ark, Darren W
• Assistant Examiner(s): BURGESS, MARC R
• Application Number:
  US14/168,432
• Publication Number:
  US 20140144068A1
• Time in Patent Office: 719 Days
• Field of Search: 431/321, 122/20.R, 122/4.A, 392/373, 165/299, 165/64
• US Class Current: 1/1
• CPC Class Codes: A01M 1/2094 killing insects by using temperature, e.g. flames, steam or freezing A01M1/22 takes precedence
• CPC Class Codes: A01M 1/24 Arrangements connected with buildings, doors, windows, or the like
• CPC Class Codes: E04B 1/72 Pest control by keeping dry E04B1/70; impregnation of wood or like materials B27K
• CPC Class Codes: F24H 3/002 using electric energy supply
• CPC Class Codes: F24H 9/0057 Guiding means
• CPC Class Codes: F25B 2400/01 Heaters
• CPC Class Codes: F25B 2600/025 by controlling speed
• CPC Class Codes: F25B 2700/2103 near a heat exchanger
• CPC Class Codes: F25B 3/00 Self-contained rotary compression machines, i.e. with compressor, condenser and evaporator rotating as a single unit
• CPC Class Codes: F25B 30/02 of the compression type
• CPC Class Codes: F25B 49/022 Compressor control arrangements
• CPC Class Codes: F28D 1/024 with an air driving element
• CPC Class Codes: F28D 1/0472 the conduits being helically or spirally coiled

Abstract

A method for killing pests in an affected area of a structure, comprises positioning a heat exchanger unit within an affected area, coupling a first end of an inlet hose to a faucet, and coupling a second end of the inlet hose to an inlet port of the heat exchanger unit such that the heat exchanger unit may receive a flow of water from the faucet. The heat exchanger unit generates heated air by transferring heat from the flow of water received from the faucet to air flowing through the heat exchanger unit. The method continues by positioning an electric heater proximate to the heat exchanger unit, the electric heater operable to further heat the heated air emitted by the heat exchanger unit to a target temperature greater than 120 degrees Fahrenheit, the further heated air being emitted into the affected area.

Claims

1. A method for killing pests in an affected area of a structure, comprising:

positioning a heat exchanger unit within an affected area;

coupling a first end of an inlet hose to a faucet;

coupling a second end of the inlet hose to an inlet port of the heat exchanger unit such that the heat exchanger unit may receive a flow of water from the faucet, the heat exchanger unit operable to generate heated air by transferring heat from the flow of water received from the faucet to air flowing through the heat exchanger unit;

positioning an electric heater proximate to the heat exchanger unit, the electric heater operable to further heat the heated air emitted by the heat exchanger unit to a target temperature greater than 120 degrees Fahrenheit, the further heated air being emitted into the affected area

monitoring a temperature of the air from the affected area;

determining that the temperature of the air is greater than a temperature of the flow of water received by the heat exchanger unit; and

causing the flow of water received by the heat exchanger unit to cease if the temperature of the air is greater than a temperature of the flow of water received by the heat exchanger unit.

2. The method of claim 1, wherein the heat exchanger unit comprises a valve that is automatically closed to prevent the flow of water to the heat exchanger unit.

3. The method of claim 1, wherein the faucet comprises one of shower faucet and a sink faucet.

4. The method of claim 1, wherein the flow of water is supplied to the faucet by a water heating unit for the structure, the method further comprising setting a thermostat of the water heating unit such that a temperature of the flow of water received by the heat exchanger unit is greater than 125 degrees Fahrenheit.

5. The method of claim 1, further comprising:

coupling a first end of an outlet hose to an outlet port of the heat exchanger unit;

positioning a second end of the outlet hose proximate to a drain such that the flow of water may leave the heat exchanger unit via the outlet port and be discharged into the drain.

6. The method of claim 1, wherein the structure comprises an apartment building and the affected area comprises an apartment.

7. The method of claim 1, wherein the structure comprises a hotel and the affected area comprises a hotel room.

8. The method of claim 1, further comprising positioning an air mover proximate to the electric heater, the air mover being configured to direct heated air emitted by the electric heater along the floor of the affected area in order to prevent temperature stratification.

9. The method of claim 1, further comprising separating a plurality of contaminated items within the affected area to ensure that each contaminated item is heated throughout to the target temperature.

10. The method of claim 1, wherein, after the affected area is treated for pests, the heat exchanger unit is further configured to generate cool air by transferring heat from the air flowing through the heat exchanger unit to the flow of water received from the faucet.

11. The method of claim 1, wherein:

the flow of water is received by the heat exchanger unit at a temperature of approximately 120-130 degrees that is tolerated by an occupant of the structure; and

the portable electric heater is operable to further heat the heated air to a target temperature greater than 140 degrees Fahrenheit.

12. The method of claim 1, further comprising placing a coil of hose relative to a hard-to-heat area within the structure, the coil of hose configured to transfer heat to the hard-to-heat area by carrying water from the heat exchanger unit.

13. The method of claim 1, further comprising:

placing a fan proximate to the inlet of the heat exchanger unit, the fan operable to direct air into the inlet of the heat exchanger unit; and

operating a thermostatic control to automatically cycle off the fan when the temperature of the air received by the heat exchanger unit is greater than a predetermined threshold.