System and method for producing domestic hot water
AssigneesDaikin Industries, Ltd., Daikin Europe N.V.
InventorTimo KIRSCHNER
Life of this patent
Estimating the term…
Abstract
A system produces domestic hot water and includes a tank having top and bottom portions and containing heat storing fluid, and a tapping unit including first and second tapping coils. The first tapping coil is immersed in the bottom portion of the tank. The second tapping coil is fluidly connected in series to the first tapping coil by a connection pipe, and to the hot water port, and is immersed the top portion of the tank A switching device switches between a first state in which water flows from the cold water port through only first tapping coil to the hot water port, and a second state in which water flows from the cold water port through the first tapping coil and, after flowing through the first tapping coil, through to the second tapping coil to the hot water port.
Claims20
A system for producing domestic hot water, comprising:
- a tank having a top portion and a bottom portion, the tank containing a heat storing fluid;
- a tapping unit comprising a first tapping coil and a second tapping coil, wherein the first tapping coil is fluidly connected to a cold water port and to a hot water port, and is immersed in the heat storing fluid in the bottom portion of the tank;
- wherein the second tapping coil is fluidly connected in series to the first tapping coil by a connection pipe, and to the hot water port, and is immersed in the heat storing fluid in the top portion of the tank;
- a switching device configured to switch between
- a first state in which water flows from the cold water port through only the first tapping coil to the hot water port, and
- a second state in which water flows from the cold water port through the first tapping coil and, after having flown through the first tapping coil, through to the second tapping coil to the hot water port.
A method for producing domestic hot water, the method comprising:
- in a first state, flowing water from a cold water port through only a first tapping coil, immersed in a heat storing fluid in a bottom portion of a tank, to a hot water port,
- in a second state, flowing water from the cold water port through the first tapping coil and, after having flown through the first tapping coil, through to a second tapping coil, immersed in the heat storing fluid in a top portion of the tank, to the hot water port.
Dependencies are inferred from the claim text.