Water heating apparatus and water heating system
AssigneeNoritz Corporation
InventorsToshihiko Hamagami, Yu Fujimoto, Shota Mizuno, Ryo Hasegawa, Yoshihiro Nunotani, Akira Iwasaki
Life of this patent
Estimating the term…
Abstract
A water heating apparatus includes: a water heating circuit; a heater for heating the water heating circuit; and a controller for controlling the water heating apparatus. The water heating circuit includes a heat exchanger for heating a fluid including water and hot water, and a pipe for supplying the fluid via the heat exchanger. The controller is configured to drive the heater in a cleaning mode in which a cleaning liquid for cleaning an inside of the heat exchanger is supplied to the heat exchanger through the pipe.
Claims13
A water heating apparatus comprising:
- a water heating circuit;
- a heater for heating the water heating circuit;
- and
- a controller for controlling the water heating apparatus,
- the water heating circuit including
- a heat exchanger for heating a fluid including water and hot water, and
- a pipe for supplying the fluid via the heat exchanger,
- the pipe including a water supply pipe being connected to the heat exchanger for supplying the fluid to the heat exchanger,
- the heater including a heater being placed in the water supply pipe,
- the controller being configured to drive the heater placed in the water supply pipe to heat a cleaning liquid in the water heating circuit in a cleaning mode in which the cleaning liquid for cleaning an inside of the heat exchanger is supplied to the heat exchanger through the pipe.
A water heating apparatus comprising:
- a burner;
- a heat exchanger for heating a fluid with heat from the burner, the fluid including water and hot water contained inside;
- a pipe for supplying the fluid;
- and
- a controller for controlling the water heating apparatus,
- the pipe including
- a supply pipe for supplying the fluid to the heat exchanger,
- a delivery pipe for delivering the fluid from the heat exchanger, and
- a bypass pipe for causing the fluid in the supply pipe to bypass the heat exchanger so as to be delivered to the delivery pipe,
- the water heating apparatus further comprising:
- a bypass flow rate regulating valve for regulating a flow rate of the fluid in the bypass pipe,
- the controller being configured to control the bypass flow rate regulating valve to be fully closed in a cleaning mode in which the cleaning liquid is supplied from the supply pipe to the heat exchanger, and control the bypass flow rate regulating valve to be half opened in a water-passing mode in which water is supplied in place of the cleaning liquid from the supply pipe to the heat exchanger after the cleaning mode.
A water heating system comprising:
- a plurality of water heating apparatuses;
- and
- a controller for controlling an operation of each of the plurality of water heating apparatuses based on information from each of the water heating apparatuses,
- each of the plurality of water heating apparatuses including
- a burner,
- a heat exchanger for heating water and hot water with heat from the burner, and
- a controller for controlling each of the water heating apparatuses,
- the controller being configured to, when a cleaning mode is started, transmit a start notification indicating start of the cleaning mode to the controller, the cleaning mode being for cleaning an inside of the heat exchanger of each of the water heating apparatuses, and
- the controller being configured to, when the start notification is received, exclude any one of the water heating apparatuses as a sender of the start notification from a target for which the operation is to be controlled.
Dependencies are inferred from the claim text.