Energy-saving hot water-heating device and system applicable to the same

Abstract

An energy-saving hot water-heating device includes a coolant circulation coil pipe, a plurality of heating pipes fixed in the coolant circulation coil pipe, communicating pipes connected between the heating pipes, and a running water channel formed between the heating pipes and heat-dissipating pipes. The coolant circulation coil pipe is connected to an air conditioning system. The heating pipes are connected to a water source. Water in the running water channel is heated up by waste heat generated by the coolant circulation coil pipe to produce household or industrial hot water. A system applicable to the energy-saving hot water-heating device includes an automatic circulation water tank, a hot water canister, and a heating boiler, to heat up cool water in the automatic circulation water tank and then store resultant hot water in the hot water canister.

1 . An energy-saving hot water-heating device for heating-producing hot water from waste heat generated by an air conditioning system, the device comprising a casing, a coolant circulation coil pipe, a plurality of heating pipes, and a plurality of communicating pipes, the device being characterized in that:
 the coolant circulation coil pipe is made of metal, disposed in the casing, curved, and comprises a coolant inlet, a coolant outlet, and a plurality of heat-dissipating pipes, the coolant inlet extending out of the casing and communicating with the air conditioning system, the coolant outlet extending out of the casing and communicating with the air conditioning system, and the heat-dissipating pipes being connected between the coolant inlet and the coolant outlet;   the heating pipes are water conveying pipes and are of a larger inner diameter than the coolant circulation coil pipe is, wherein each of the heat-dissipating pipes of the coolant circulation coil pipe fits inside a corresponding one of the heating pipes, thereby allowing a running water channel to be formed between an inner wall of each of the heating pipes and an outer wall of a corresponding one of the heat-dissipating pipes, wherein one of the heating pipes has a water inlet extending out of the casing, wherein another one of the heating pipes has a water outlet extending out of the casing; and   the communicating pipes are each connected between two adjacent ones of the heating pipes, such that the running water channels inside the heating pipes are in communication with each other through the communicating pipes.   
     
     
         2 . A system applicable to the device of  claim 1 , the system further comprising an automatic circulation water tank, a hot water canister, a heating boiler, a water feeding pipeline, a water returning pipeline, and a hot water discharging pipeline, characterized in that:
 the automatic circulation water tank stores water and has a first pumping motor and a temperature sensor, the first pumping motor drawing water from the automatic circulation water tank, and the temperature sensor having a controller and sensing temperature;   the hot water canister provides thermal insulation for the stored hot water, and is independent of the automatic circulation water tank;   the heating boiler heats up the hot water in the hot water canister, wherein the heating boiler and the hot water canister are either integrally formed as a unitary structure or separate;   the water feeding pipeline is connected between the water inlet of the energy-saving hot water-heating device and the first pumping motor of the automatic circulation water tank for conveying water from the automatic circulation water tank to a running water channel of the energy-saving hot water-heating device through the first pumping motor, wherein a pressure reducing valve is disposed at the water feeding pipeline for regulating water pressure;   the water returning pipeline is connected between the automatic circulation water tank and a water outlet of the energy-saving hot water-heating device for sending the hot water produced by the energy-saving hot water-heating device back to the automatic circulation water tank; and   the hot water discharging pipeline is connected between the automatic circulation water tank and the hot water canister and equipped with a second pumping motor adapted for delivering hot water from the automatic circulation water tank to the hot water canister and connected to the temperature sensor of the automatic circulation water tank.   
     
     
         3 . The system of  claim 2 , wherein the energy-saving hot water-heating device further comprises a temperature sensor equipped with a controller, adapted for sensing temperature, disposed at the coolant circulation coil pipe, and connected to the first pumping motor of the automatic circulation water tank. 
     
     
         4 . The system of  claim 3 , wherein a maintenance opening capable of being shut and opened is disposed at the automatic circulation water tank. 
     
     
         5 . The system of  claim 4 , wherein a drainage hole is disposed at a bottom of the automatic circulation water tank for removing impurities. 
     
     
         6 . The system of  claim 5 , wherein an exhaust vent is disposed at a top of the automatic circulation water tank for relieving pressure. 
     
     
         7 . The system of  claim 2 , further comprising a raw water pipeline in communication with the automatic circulation water tank. 
     
     
         8 . The system of  claim 2 , wherein a pressure reducing valve is disposed at the water returning pipeline for regulating water pressure. 
     
     
         9 . The system of  claim 2 , wherein the pressure reducing valve is a spherical pressure reducing valve. 
     
     
         10 . The system of  claim 8 , wherein the pressure reducing valve is a spherical pressure reducing valve.