Rinnai Corporation

Shigeki Takeuchi

Yoshio Goto

Daisuke Naito

Ryosuke Yuge

Atsushi Fukaya

The present invention improves the user-friendliness of a hot-water supply apparatus when using hot water supply and air conditioning. A switching control unit, which switches between heat medium flow pathsandaccording to an air conditioning ready state or a hot-water supply ready state, switches a heat medium flow path to the hot-water supply ready state by a switching valvein the case where air conditioning is not used by the time an air conditioning standby time elapses during standby in the air conditioning ready state.

Hot-water supply apparatus

A heat exchanger () includes a heat exchanging body () disposed within an outer box (). A supply pipe () and a discharge pipe () in fluid communication with the heat exchanging body () respectively extend through first and second insertion holes () in the outer box (). Elastic seal members () are respectively provided around the supply pipe () and the discharge pipe () and between a first sidewall () of the outer box () and the heat exchanging body (). At least one biasing member () exerts a lateral biasing force (F; F) on the elastic seal members (), thereby maintaining the elastic seal members () in a state of compressive deformation and contacting the outer box () and the heat exchanging body () in an air-tight manner to block potential leakage paths (LP; LP) via the insertion holes ().

Heat exchanger

The exhaust duct includes an exhaust collecting portion connected a heat exchanger and an exhaust guiding portion communicating with the exhaust collecting portion and extended upward in a state close to a side of a cylindrical body of the heat exchanger. The exhaust collecting portion includes a connection opening constituting an inner peripheral wall, into which a cylindrical outlet side connection portion at the lower end of the heat exchanger is fitted, and a groove provided on an outer peripheral side than the inner peripheral wall of the connection opening. The packing includes a seal portion sandwiched in a compressed state between the inner peripheral wall of the connection opening in the exhaust collecting portion and an outer peripheral wall of the cylindrical outlet side connection portion in the heat exchanger to constitute a seal and an anchor portion inserted into the groove of the exhaust collecting portion.

Heating device

Provided is a heat medium circulation device with a simple structure, capable of reducing power consumption in performing an anti-freezing treatment. A first heat medium circuitand a second heat medium circuitare connected via a connectorAn anti-freezing control unitactivates the first pumpwith the second pumpin a stopped state, when preventing the heat medium in the first heat medium circuitfrom freezing.

Growing community of inventors

Aichi, Japan

Shigeki Takeuchi