US 2014/0230805 A1 · GAS HOT WATER HEATING DEVICE AND SYSTEM

Abstract

A gas hot water heating device and a system with heating function are disclosed. The device includes a combustion device (1), an inlet (E) and an outlet (G) of a hot water pipeline (2), an inlet (I) and an outlet (H) of a heating loop (3), and a water tank (4). The device also includes a first heat exchanger (5), a second heat exchanger (6) and a third heat exchanger (7). A flue gas outlet (1-2) of the combustion device (1) is connected with flue gas passages of the first heat exchanger (5) and the second heat exchanger (6) in order and in series. A first water flow passage (5-1) and a second water flow passage (5-2) are arranged in the first heat exchanger (5), and the water tank (4) and the first water flow passage (5-1) of the first heat exchanger (5) are communicated between the inlet (E) and the outlet (G) of the hot water pipeline (2) in series. The second heat exchanger (6) and the third heat exchanger (7) can exchange heat with water in the water tank (4).

Claims14

Dependent claims

A kind of gas hot water heating device comprising:

a combustion device;
an inlet and an outlet of a hot water pipeline;
an inlet and an outlet of a heating loop;
a water tank;
a first heat exchanger;
a second heat exchanger;
a third heat exchanger;
a flue gas outlet of the combustion device is connected to a flue gas path of the first and the second heat exchangers in series according to sequence;
the first heat exchanger has a first flow channel and a second flow channel, and the water tank and the first flow channel of the first heat exchanger are connected in series between the inlet and the outlet of the hot water pipeline;
the second flow channel of the first heat exchanger and a flow channel of the third heat exchanger are connected in series between the inlet and the outlet of the heating loop;
wherein heat exchange can be realized between the second and the third heat exchangers and the water inside the water tank, wherein heat exchange is done in the first heat exchanger between the water flowing in the hot water pipeline and that flowing in the heating loop.

8 more elements

Dependencies are inferred from the claim text.

Gas hot water heating device and system

Life of this patent

Gas hot water heating device and system

Life of this patent

Abstract

Claims14