Patent AU-2018200745-A1 (AU)
Title: Improved water heater control arrangement and assembly
Inventor: BOURKE BRENDAN
IPC: F24H1/18
Filed: 2018-01-31
Abstract: An electric water heater tank (14100) adapted for connection to a controller (14550), the tank including one or more electrical heating elements temperature sensing means (14516) mounted on the exterior of the tank wall and adapted to obtain a measurement of the temperature of the water in the tank, the temperature sensing means and each heating element being connected to an externally accessible connection means (14510). The tank can include one or more heating element control means (14502) each connected to a corresponding one of the heating elements. The element control means can be connected to the externally accessible connection means (14510). Means (4202) for facilitating injection of foam insulation around the tank are also provided. The invention also provides an electrical water heater element control unit including: a first PCB including first electrical components, and a first electrical connector; a second PCB including second electrical components, and a second electrical connector being a mating connector for the first connector; the first and second connectors being dimensioned and oriented so that, when the first and second connectors are engaged, the second PCB is located in close proximity to the first PCB and the first electrical components, and or in a separate plane from the plane of the first PCB and the first electrical components. The invention further provides an electrical water heater including a tank, a first heating element, and one or more further heating elements located at different heights within the tank, and two or more element controllers, each associated with a corresponding one of the heating elements; the heating elements having electrical connections projecting through the wall of the tank; each element controller being mounted adjacent the electrical connections of the heating elements. The first heating element and or said one or more further heating elements include two or more blades. Additionally the element controller includes an electric cut-out and or relays to control blades of said first heating element and or said one or more further heating elements. The invention also provides a method of providing at least a minimum volume of usable hot water in a water heater having both a mains power source and a source of renewable power. The invention further provides an electric water heater including: a tank; one or more electrical heating elements within the tank; electrical connections for the heating elements projecting through the wall of the tank; at least one thermosensor; a combined wiring harness having an externally accessible first external connector adapted to connect both power wires and signalling wires to external circuitry via a complementary second external connector. The invention also provides an electric water heater including a tank, a power control element, and a heat sink, the tank including a cold water inlet proximate the lower end of the tank, the heat sink being mounted proximate the lower end of the tank, the power control element being mounted on the heat sink. The invention also provides a foam dam adapted to provide an insulation free space in an injection foam insulation space, the dam including first and second attachable sections, each section being designed to define a complementary portion of the insulation free space. The invention further provides a temperature sensor assembly housing including an elongate tubular member having a tank-contacting surface of thermally conductive material, the tubular member including one or more internal channels, each channel being adapted to receive a thermosensor assembly. The invention also provides an electric water heater adapted for connection to a controller, the heater including a tank, one or more electrical heating elements, and temperature sensing means mounted on the exterior of the tank wall and adapted to obtain a measurement of the temperature of the water in the tank, the temperature sensing means and each heating element being connected to an externally accessible connection means Figure to be published: 14 14518 14100 Q~l 14502 r14530 14536 -14532 Ck -- 14506 --14538 14544 -14504 -14540 14514 -14542 { -14508 - ~~~ - 1455