Patent ID: 11946655
Assignee: NORITZ CORPORATION
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A heating and hot-water supply apparatus comprising:
a combustor;
a heat exchanger for heating a heating heat-medium by heat generated by the combustor;
a circulation passage connecting an external heating terminal and the heat exchanger;
a circulation pump arranged in the circulation passage to circulate the heating heat-medium;
a bypass passage branched off from the circulation passage and bypassing the heating terminal;
a valve arranged at a branching part of the bypass passage;
a hot-water supply heat exchanger arranged in the bypass passage;
a water entry passage supplying water of a hot-water supply pipe and an external water supply pipe to the hot-water supply heat exchanger, wherein the hot-water supply pipe is provided with a warm-water circulation pump for circulating warm water, and a hot water tap is arranged at a warm water use spot;
a hot-water supply passage for supplying water heated by the hot-water supply heat exchanger to the hot-water supply pipe at a predetermined hot-water supply setting temperature; and
a controller controlling the valve to be adaptable to each of a heating operation of supplying the heating heat-medium to the heating terminal and a hot-water supply operation of supplying hot water to the hot-water supply pipe,
wherein the controller prioritizes the hot-water supply operation when there is a hot-water supply request for warm water use in addition to a heating request, and prioritizes the heating operation when there is a temperature-maintaining request for maintaining a temperature of the hot-water supply pipe in addition to the heating request.