Integrated heating system
First Claim
1. A heating unit located within an interior space including a first set of rooms and a second set of rooms, the second set of rooms not having any rooms in common with the first set of rooms, comprising:
- a primary heater for generating primary combustion gases;
a heat exchanger including;
a fresh air input for receiving fresh air from outside the interior space;
a return air input for receiving return air from the first set of rooms;
a supply air output connected to the fresh air input and the return air input for supplying air to the first and second sets of rooms;
a combustion gas input for receiving the primary combustion gases from the primary heater;
an exhaust air input for receiving exhaust air from the second set of rooms;
an exhaust air output connected to the combustion gas input and the exhaust air input;
whereby heat is exchanged from the primary combustion gases to the return air or from the exhaust air to the fresh air;
a first fan for drawing the primary combustion gases and the exhaust air through the heat exchanger, and for exhausting the primary combustion gases and the exhaust air outside the interior space;
a second fan for drawing in the return air from the first set of rooms or fresh air from outside the living space, and for blowing out the supply air into the first and second rooms; and
a controller for switching between a heating mode in which the primary combustion gases heat the return air, and a heat recovery mode in which the exhaust air heats fresh air.
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Accused Products
Abstract
An integrated heating unit operates in a first heating mode, in which the heat of combustion gases is transferred to return air, and a second heat recovery mode, in which the heat of exhaust air is transferred to fresh air. The heating unit of the present invention utilizes the same heat exchanging unit and fans to transfer the heat from the combustion gases to the return air and to transfer heat from the exhaust air to the fresh air. The exhaust air is recovered from a select group of rooms, e.g. kitchens and bathrooms. A secondary heater can also be provided in the integrated unit in the form of a fireplace for providing an alternate or an additional source of the combustion gases.
30 Citations
9 Claims
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1. A heating unit located within an interior space including a first set of rooms and a second set of rooms, the second set of rooms not having any rooms in common with the first set of rooms, comprising:
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a primary heater for generating primary combustion gases; a heat exchanger including; a fresh air input for receiving fresh air from outside the interior space; a return air input for receiving return air from the first set of rooms; a supply air output connected to the fresh air input and the return air input for supplying air to the first and second sets of rooms; a combustion gas input for receiving the primary combustion gases from the primary heater; an exhaust air input for receiving exhaust air from the second set of rooms;
an exhaust air output connected to the combustion gas input and the exhaust air input;whereby heat is exchanged from the primary combustion gases to the return air or from the exhaust air to the fresh air; a first fan for drawing the primary combustion gases and the exhaust air through the heat exchanger, and for exhausting the primary combustion gases and the exhaust air outside the interior space; a second fan for drawing in the return air from the first set of rooms or fresh air from outside the living space, and for blowing out the supply air into the first and second rooms; and a controller for switching between a heating mode in which the primary combustion gases heat the return air, and a heat recovery mode in which the exhaust air heats fresh air. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification