Heaters for liquid heating vessels
AssigneeStrix Limited
InventorsMichael James Scott, Iain Fenna
Life of this patent
Estimating the term…
Abstract
An underfloor heater for a liquid heating vessel comprises a base plate, a heat diffuser portion in good thermal contact with the base plate, a heating element in good thermal contact with the diffuser portion and a sensing region for receiving a thermal sensor. The sensing region is not directly connected to the diffuser portion and is at least partly surrounded by a wall. The sensing region may be provided with a second separate diffuser portion comprising a disc of aluminum brazed to the underside of the base plate.
Claims19
An underfloor heater for a liquid heating vessel comprising a base plate, a heat diffuser plate attached to and in good thermal contact with an underside of the base plate, a heating element in good thermal contact with the diffuser plate and a sensing region for receiving a thermal sensor, wherein said sensing region is not directly connected to the diffuser plate and is at least partly surrounded by a wall disposed between the heat diffuser plate and the sensing region, and wherein the wall is formed by, or attached as a separate part to, the base plate.
An underfloor heater for a liquid heating vessel comprising a base plate, a main heat diffuser plate attached to and in good thermal contact with an underside of the base plate, a heating element in good thermal contact with the main diffuser plate and a sensing region for receiving a thermal sensor wherein said sensing region comprises a second, separate diffuser attached to the underside of the base plate and one or more locating means for locating said second diffuser, the locating means comprising a wall at least partly surrounding the sensing region, and wherein the wall is formed by, or attached as a separate part to, the base plate.
A method of making an underfloor heater comprising providing a base plate with locating means comprising a wall at least partially surrounding a sensing region thereof and attaching first and second separate heat diffusers to an underside of said base plate, said first heat diffuser being provided in the sensing region and located therein by the locating means, and wherein the wall is disposed between the first and the second diffusers and is formed by, or attached as a separate part to, the base plate.
Dependencies are inferred from the claim text.