Heating unit for heat-transfer fluid for a central heating installation
OwnerErnest Docloinventor
Life of this patent
Estimating the term…
Abstract
The invention concerns a heating unit comprising a tubular wall (1) and first and second end walls (2, 3). A first annular space (6) is located between the tubular wall (1) and a first tubular partition (4). A second annular space (7) is located between the first partition (4) and a second tubular partition (5) inside the first partition (4). An immersion heater (25) is mounted in the central channel (8) formed by the second partition (5). The second space (7) communicates with the central channel (8) near the first end wall (2) and with the first space (6) near the second end wall (3). An intake orifice (13) emerges into the first space (6) near the first end wall (2) and an outlet (14), in the second end wall (3) emerges into the central channel (8).
Claims21
Heating unit for heat-transfer fluid for a central heating installation, characterised in that it consists of a reservoir having a tubular external wall (1), a first end wall (2) and a second end wall (3), these walls (1, 2, 3) delimiting a substantially cylindrical space, a first tubular internal partition (4) and a second tubular internal partition (5), substantially concentric with the tubular external wall (1) being mounted in the reservoir, the second internal partition (5) having a diameter smaller than that of the first internal partition (4), a first annular space (5) being situated between the tubular external wall (1) and the first internal partition (4), a second annular space (7) being situated between the first internal partition (4) and the second internal partition (5), a central pipe (8) being situated inside the second internal partition (5), the second annular space (7) being in communication with the central channel (8) close to the first end wall (2) and in communication with the first annular space (6) close to the second end wall (3), the reservoir being provided with an inlet orifice (13) opening out in the first annular space (6) close to the first end wall (2), and an orifice (14), in the second end wall (3), opening out from the central pipe (8), at least one electric immersion heater (25) being mounted in the central pipe (8), at least one thermostatic sensor (19) being mounted in the reservoir.
Heating unit according to any one of the preceding claims, characterised in that the second internal partition (5) is made from steel.
Heating unit according to any one of the preceding claims, characterised in that it comprises heat transfer elements situated in the said second annular space (7) and fixed to the said second internal partition (5).
Heating unit according to any one of the preceding claims, characterised in that it comprises at least one thermostatic sensor (19) mounted in the said second annular space (7).
Heating unit according to any one of the preceding claims, characterised in that several openings (22) distributed over the periphery of the said first internal partition (4), close to the second end wall (3), put the first annular space (6) and the second annular space (7) in communication.
Heating unit according to any one of the preceding claims, characterised in that a space is provided between the said second internal partition (5) and the first end wall (2), thus putting the second annular space (7) and the central pipe (8) in communication.
Heating unit according to any one of the preceding claims, characterised in that the said inlet orifice (13) of the reservoir is provided in the tubular external wall (1).
Heating unit according to any one of the preceding claims, characterised in that the reservoir is provided with means (29, 30) enabling it to be fixed to a support.
Heating unit according to any one of the preceding claims, characterised in that two electric immersion heaters (25) are mounted in the said central pipe (8).
Central heating installation with a heat-transfer fluid, comprising a pipework circuit in which there are connected one or more radiators or convectors, at least one circulation pump, at least one expansion device and at least one heating unit, the installation including at least one room thermostat, characterised in that at least one heating unit according to any one of the preceding claims is connected in the said circuit, the installation comprising an automated control station able to receive the signals from the room thermostat or thermostats and from the thermostatic sensor or sensors (19) of the heating unit or units and to control the start-up and stoppage of operation of the circulation pump or pumps and of the immersion heater or heaters of the heating unit or units.
Dependencies are inferred from the claim text.