Heating system

• US 10,073,071 B2
• Filed: 05/01/2015
• Issued: 09/11/2018
• Est. Priority Date: 06/07/2010
• Status: Active Grant

• Current Assignee: David Deng
• Original Assignee: David Deng
• Inventors: Deng, David
• Primary Examiner(s): Larkin, Daniel S
• Application Number:
  US14/702,465
• Publication Number:
  US 20150233883A1
• Time in Patent Office: 1,229 Days
• Field of Search: 73 232, 126 25 R, 126 39 R, 126344, 126512, 34524
• CPC Class Codes: F23D 11/38 Nozzles; Cleaning devices therefor
• CPC Class Codes: F23D 14/48 Nozzles
• CPC Class Codes: F23D 14/64 with injectors
• CPC Class Codes: F23D 17/00 Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel
• CPC Class Codes: F23D 2900/14481 Burner nozzles incorporating flow adjusting means
• CPC Class Codes: F23N 1/007 using mechanical means F23N1/04 - F23N1/10 take precedence
• CPC Class Codes: F23N 2235/22 cooperating with magnets
• CPC Class Codes: F23N 2235/24 Valve details
• CPC Class Codes: F23N 2237/08 two or more different types of fuel simultaneously
• CPC Class Codes: F23Q 9/045 Structurally associated with a main-burner
• CPC Class Codes: F24C 3/12 Arrangement or mounting of control or safety devices
• CPC Class Codes: F24D 2200/04 Gas or oil fired boiler
• CPC Class Codes: F24H 9/2064 for air heaters
• CPC Class Codes: G01N 33/0036 specially adapted to detect a particular component physical analysis of gaseous biological material G01N33/497
• CPC Class Codes: Y10T 137/2562 Dividing and recombining
• CPC Class Codes: Y10T 137/2564 Plural inflows
• CPC Class Codes: Y10T 137/2579 Flow rate responsive
• CPC Class Codes: Y10T 137/2584 Relief or bypass closes as main opens
• CPC Class Codes: Y10T 137/2592 Carried choke
• CPC Class Codes: Y10T 137/2657 Flow rate responsive
• CPC Class Codes: Y10T 137/2688 : Flow rate responsive
• CPC Class Codes: Y10T 137/7792 : Movable deflector or choke
• CPC Class Codes: Y10T 137/7793 : With opening bias [e.g., pressure regulator]
• CPC Class Codes: Y10T 137/7796 : Senses inlet pressure
• CPC Class Codes: Y10T 137/7797 : Bias variable during operation
• CPC Class Codes: Y10T 137/7836 : Flexible diaphragm or bellows reactor
• CPC Class Codes: Y10T 137/7905 : Plural biasing means
• CPC Class Codes: Y10T 137/7939 : Head between spring and guide
• CPC Class Codes: Y10T 137/86919 : Sequentially closing and opening alternately seating flow controllers

Abstract

A heating system can include certain pressure sensitive features. These features can be configured to change from a first position to a second position based on a pressure of a fuel flowing into the feature. These features can include, fuel selector valves, pressure regulators, burner nozzles, and oxygen depletion sensor nozzles, among other features.

Claims

1. A dual fuel oxygen depletion sensor comprising:

a housing having a single inlet and a single outlet, and having a first fluid flow path and a second fluid flow path through the housing between the inlet and the outlet;

a first air intake;

a second air intake;

a first injector within the housing and defining part of the first fluid flow path, the first injector comprising a first orifice, the first orifice configured to direct a first fuel from the inlet and towards the outlet while drawing air into the housing through the first air intake;

a second injector within the housing and defining part of the second fluid flow path, the second injector comprising a second orifice, the second orifice configured to direct a second fuel from the inlet and towards the outlet while drawing air into the housing through the second air intake, wherein the first fuel is at a first pressure different from a second pressure of the second fuel;

a first valve within the housing and defining part of the first fluid flow path, the first valve configured to control a flow of the first fuel to the first injector; and

a second valve within the housing and defining part of the second fluid flow path, the second valve configured to control a flow of the second fuel to the second injector.

2. The dual fuel oxygen depletion sensor of claim 1, the first orifice comprising a first hole sized differently from a second hole comprising the second orifice.

3. The dual fuel oxygen depletion sensor of claim 1, the first air intake comprising a first hole sized differently from a second hole comprising the second air intake.

4. The dual fuel oxygen depletion sensor of claim 1, wherein the first valve is configured to open at the first pressure and close at the second pressure, and wherein the second valve is configured to open at the second pressure and close at the first pressure.

5. The oxygen depletion sensor of claim 4, further comprising a first biasing member configured to open the first valve by a first predetermined fluid pressure acting on the first valve, the first predetermined fluid pressure being insufficient to open the second valve.

6. The oxygen depletion sensor of claim 5, further comprising a second biasing member configured to open the second valve by a second predetermined fluid pressure acting on the second valve, wherein each of the first and second biasing members comprise at least one of a spring and a diaphragm.

7. The oxygen depletion sensor of claim 1, further comprising a thermocouple and an igniter.

8. The oxygen depletion sensor of claim 1, further comprising an adjustable valve seat configured to calibrate the first valve.

9. A heating system comprising the dual fuel oxygen depletion sensor of claim 1, and a gas valve configured to direct fuel to the dual fuel oxygen depletion sensor, wherein the heating system is part of a water heater, a fireplace, a gas oven, a stove, a BBQ, or a gas dryer.

10. The dual fuel oxygen depletion sensor of claim 1, wherein at least one of the first and second air intakes comprise a hole of an adjustable size.