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US 11,598,556 B2Granted
Blow through direct fired heating, A/C and ERV
AssigneeCambridge Engineering, Inc.
InventorsMichael Rodney Mueller, Carl Merrill Schoenberg, John Patrick Foley, Jr., Thomas Joseph Cleary, Marc David Braun
Life of this patent
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Abstract
According to various aspects, exemplary embodiments are disclosed of blow through direct fired heaters including evaporator coils and/or energy recovery ventilation.
Claims20
A direct fired, blow through HVAC system comprising:
- a burner;
- an evaporator coil;
- and
- an air switching box configured to selectively direct air through or around the evaporator coil, wherein:
- the air switching box is configured to, while the system is operating in a cooling and/or air-conditioning mode, allow air to be circulated across the evaporator coil;
- and
- the air switching box is configured to, while the system is operating in a heating mode and the burner is on, direct a supply of air around the evaporator coil such that the supply of air does not pass over the evaporator coil while the system is operating in the heating mode before being discharged from the system.
4 more elements
A direct fired, blow through heating system comprising:
- a burner;
- an evaporator coil;
- a supply air blower;
- an inlet configured to provide air for circulation through the system to be provided to an indoor space;
- an exhaust for removing air from the indoor space;
- an energy recovery ventilation device upstream of the supply air blower and coupled to the inlet and the exhaust, the energy recovery ventilation device configured to receive outdoor air, transfer energy between the exhaust air and the received outdoor air, and provide the received outdoor air to the inlet for circulation through the system;
- and
- a discharge mode damper moveable between a first diverting position which the discharge mode damper causes a supply of air to pass over the evaporator coil before being discharged from the system, and a second blocking position in which the discharge mode damper prevents the supply of air from passing over the evaporator coil before being discharged from the system, whereby the discharge mode damper is configured to direct the supply of air around the evaporator coil such that the supply of air does not pass over the evaporator coil while the system is operating in the heating mode and the burner is on before being discharged from the system.
5 more elements
Dependencies are inferred from the claim text.