Instantaneous hot-water system

Abstract

Disclosed is a hot-water system including a water tank with a water inlet and a water outlet for storing air-conditioning water; a pump motor, connected to the water outlet of the water tank through a connection pipe at one end thereof, circulating the air-conditioning water in the water tank by a pumping operation; an instantaneous water heater, connected to the other end of the pump motor by a connection pipe, instantaneously heating the air-conditioning water being circulated by the pumping operation of the pump motor; and an air-conditioning member, connected to both of the instantaneous water heater and the water tank to form an air-conditioning fluid path of a closed loop and guide the flow of the air-conditioning water; wherein the surface temperature of the air-conditioning member is increased by the heat of the air-conditioning water heated by the instantaneous water heater.

1 . An instantaneous hot-water system comprising:
 a water tank with a water inlet and a water outlet, the water tank being configured to store air-conditioning water;   a pump motor with an end connected to the water outlet of the water tank through a connection pipe, the pump motor being configured to pump the air-conditioning water out of the water tank so that the air-conditioning water is circulated;   an instantaneous water heater connected to the other end of the pump motor by a connection pipe and configured to instantaneously heat the air-conditioning water being circulated by a pumping operation of the pump motor; and   an air-conditioning member connected to the instantaneous water heater and the water tank by a connection pipe so as to form an air-conditioning fluid path of a closed loop and to guide flow of the air-conditioning water, a structure of the air-conditioning member being that of a hot-water mat or a hot-water panel so that a surface temperature of the air-conditioning member is increased by heat of the air-conditioning water which is instantaneously heated and supplied by the instantaneously water heater,   wherein the water outlet of the water tank includes a first connection portion to which an end of a connection pipe, which is connected to the pump motor, is connected, and   wherein a second connection portion is bifurcated from an end of the first connection portion and is connected to the other end of the connection pipe, which is connected to the air-conditioning member, so that, when the air-conditioning water is circulated by the pumping operation of the pump motor in a state in which the air-conditioning water is stored in the water tank, the air-conditioning water discharged out of a water outlet of the air-conditioning member is returned to the pump motor through the first connection by water pressure generated by the pumping operation of the pump motor while the air-conditioning water in the water tank is stored in an uncirculated state.   
     
     
         2 . The instantaneous hot-water system according to  claim 1 , further comprising:
 a back flow preventing member installed in the first connection portion and configured to turn in a hinged manner in an opening direction to open the first connection portion or a closing direction to close the first connection portion in accordance with a discharge amount of the air-conditioning water so that back flow of the air-conditioning water to the water tank and the second connection portion is prevented; and   a stopper protrusion formed on an inside wall surface of the first connection portion and configured to restrict a turning range of the back flow preventing member in a manner that the stopper protrusion blocks an end of the back flow preventing member so as not to turn further when the back flow preventing member is turned in the closing direction.   
     
     
         3 . The instantaneous hot-water system according to  claim 1 , further comprising:
 a controller configured to control operations of the pump motor and the instantaneous water heater,   wherein the instantaneous water heater includes a temperature sensor installed at a place to which the air-conditioning member is connected and from which the air-conditioning water is discharged, in order to detect a water temperature and transmit the detected water temperature to the controller, and a bimetal switch or a thermal fuse installed at the place to which the air-conditioning member is connected and from which the air-conditioning water is discharged, in order to interrupt a power supply and hence stop an instantaneous heating operation when the air-circulating water is overheated when the air-conditioning water is instantaneously heated.