CN201903169U - Water storage type condensation gas water heater with internal circulating device - Google Patents

Abstract

A water storage type condensation gas water heater with an internal circulating device includes a burner, a main heat exchanger, a condensation heat exchanger, a sanitary water inlet pipe, and a sanitary water outlet pipe, and further includes a circulating water outlet pipe, a circulating water inlet pipe, a water pump, a water tank and a plate type heat exchanger. The water pump is mounted in the circulating water outlet pipe; a bypass pipe is further arranged on the circulating water outlet pipe; a heat exchange section of the bypass pipe is sleeved into the sanitary water inlet pipe; the sanitary water inlet pipe sleeving the bypass pipe passes through the condensation heat exchanger; the circulating water outlet pipe passes through the main heat exchanger; the plate type heat exchanger is mounted in the water tank; a circulating water inlet, a circulating water outlet, a sanitary water inlet and a sanitary water outlet are arranged on the plate type heat exchanger; one end of the circulating water inlet pipe and a water outlet of the bypass pipe are connected into the water tank respectively; and the water pump is electrically connected with a power supply. Therefore, the water storage type condensation gas water heater can effectively and rapidly heat small flows of sanitary hot water, and output hot water instantly; the water temperature is stable; and the volume is small.

Description

Water storage condensing gas water heater with internal circulation device

Technical field: The utility model relates to a condensing gas water heater, in particular to a storage type condensing gas water heater with an internal circulation device.

Background technology: In the prior art, most household gas water heaters are fast-heating gas water heaters or storage-type gas water heaters with large volume water tanks. When the fast heating gas water heater is used, it takes a period of time to heat the water to an appropriate temperature, which causes a waste of water and gas, and the water temperature is unstable during use, and it is prone to hot and cold phenomena; Water-type gas water heaters all have a large water tank, which occupies a large amount of housing area of the user, and cannot be installed in ordinary households. Moreover, when the return water temperature is high, even if the condensation method is used, the thermal efficiency is low. In order to overcome the above defects, We have developed a water storage condensing gas water heater with an internal circulation device.

Summary of the invention: The technical problem to be solved by this utility model is to provide a water storage type condensing gas water heater with an internal circulation device, which can effectively and quickly heat a small flow of sanitary hot water, with high thermal efficiency, and can produce hot water immediately The water temperature is stable, the volume is small, and the installation space occupied is small.

The technical solution adopted by the utility model to solve its technical problems is: it includes a gas valve, a burner, a main heat exchanger, a condensation heat exchanger, a smoke collecting hood, a fan, a condensed water outlet, a sanitary water inlet pipe, and a sanitary water outlet. Water pipes, which also include circulating water outlet pipes, circulating water inlet pipes, water pumps, water tanks, and plate heat exchangers. The water pumps are installed in the circulating water outlet pipes, and bypass pipes are also installed on the circulating water outlet pipes. The hot section is inserted into the sanitary water inlet pipe, the sanitary water inlet pipe with the bypass pipe passes through the condensing heat exchanger, the circulating water outlet pipe passes through the main heat exchanger, and the plate heat exchanger is installed in the water tank. The device is provided with a circulating water inlet, a circulating water outlet, a sanitary water inlet, and a sanitary water outlet. One end of the circulating water inlet pipe and the bypass pipe outlet are respectively connected to the water tank, and the water pump is electrically connected to the power supply.

The water outlet of the bypass pipe is placed at the lower part of the plate heat exchanger.

The plate heat exchanger is installed below the inside of the water tank.

The volume of the water tank is 5L-30L.

The volume of the water tank is 8L-25L.

The volume of the water tank is 20L.

Compared with the background technology, the utility model has the beneficial effects: because the utility model adopts the internal circulation device, the internal circulation water is heated by the gas cycle through the circulating water pipeline, the condensing circulating water pipeline, the water pump, the water tank and the plate heat exchanger, Furthermore, it exchanges heat with sanitary water, so it can effectively and quickly heat small-flow sanitary hot water, with high thermal efficiency, instant hot water and stable water temperature, small size, and small installation space.

BRIEF DESCRIPTION OF THE DRAWINGS: Figure 1 is a schematic structural view of the utility model.

Specific implementation: Referring to the accompanying drawing 1, it includes a gas valve 1, a burner 2, a main heat exchanger 3, a condensation heat exchanger 6, a smoke collection hood 7, a fan 9, a condensed water outlet 10, and a sanitary water inlet. Water pipe 8, sanitary water outlet pipe 19, circulating water outlet pipe 22, circulating water inlet pipe 20, water pump 21, water tank 11, plate heat exchanger 16, water pump 21 is installed in circulating water outlet pipe 22, and circulating water outlet pipe 22 A bypass pipe 5 is also provided, and the heat exchange section 4 of the bypass pipe 5 is inserted into the sanitary water inlet pipe 8, and the sanitary water inlet pipe 8 covered with the bypass pipe 5 passes through the condensing heat exchanger 6, and the circulating water outlet pipe 22 passes through the main heat exchanger 3, and the plate heat exchanger 16 is installed in the water tank 11. The plate heat exchanger 16 is provided with a circulating water inlet 13, a circulating water outlet 12, a sanitary water inlet 17, and a sanitary water outlet 14. One end of the circulating water inlet pipe 20 and the bypass pipe outlet 15 are respectively connected to the water tank 11, and the water pump 21 is electrically connected to the power supply.

The water outlet 15 of the bypass pipe is placed at the lower part of the plate heat exchanger 16, and the plate heat exchanger 16 is installed below the inside of the water tank 11. The volume of the water tank 11 can be 5L-30L, but preferably 8L-25L, most preferably 20L.

When in use, open the gas valve 1, the gas is fully burned on the surface of the burner 2, the high-temperature flue gas flows through the main heat exchanger 3, heats the circulating water, and the cooled flue gas passes through the condensing heat exchanger 6 to heat sanitary water and bypass The circulating water flowing in from the pipe 5 is drawn out by the fan 9 from the fume collecting hood 7 after the flue gas is condensed, and the condensed water is collected in the fume collecting hood 7 and discharged from the condensed water outlet 10. After the water pump 21 is running, the water in the water tank 11 enters the plate heat exchanger 16 through the circulating water inlet 13 in the plate heat exchanger 16, the water enters the circulating water outlet pipe 22 from the circulating water outlet 12, and part of the water flows through the main The circulating water outlet pipe section of the heat exchanger 3, the water flows out of the main heat exchanger 3, flows through the circulating water inlet pipe 20, and then flows into the water tank 11; the other part of the water in the circulating water outlet pipe 22 flows into the bypass pipe 5 After being heated by the low-temperature flue gas of the condensing heat exchanger 6, it flows out from the water outlet 15 of the bypass pipe. After the water in the water tank 11 was heated to a certain temperature, the gas valve 1 was closed.

When the user uses hot water, open the sanitary water valve, the sanitary water flows in from the sanitary water inlet pipe 8, is heated by the low-temperature flue gas of the condensing heat exchanger 6, flows into the plate heat exchanger 16 through the sanitary water connecting pipe 18, and circulates After the water is heated, it flows from the sanitary water outlet 14 through the sanitary water outlet pipe 19 for use by users. When the water temperature of the water in the water tank 11 drops to a certain temperature, the gas valve 1 of the water heater is opened to heat the circulating water, so that the water in the water tank 11 is kept within a certain temperature range, thereby ensuring the sanitation water entering the plate heat exchanger 16 The temperature of the heated hot water is stable.

Claims (6)

1. A water storage type condensing gas water heater with an internal circulation device, which includes a gas valve (1), a burner (2), a main heat exchanger (3), a condensing heat exchanger (6), and a smoke collection hood ( 7), fan (9), condensed water outlet (10), sanitary water inlet pipe (8), sanitary water outlet pipe (19), is characterized in that it also includes circulating water outlet pipe (22), circulating water inlet pipe (20), water pump (21), water tank (11), plate heat exchanger (16), the water pump (21) is installed in the circulating water outlet pipe (22), and the circulating water outlet pipe (22) is also provided with a bypass The pipe (5), the heat exchange section (4) of the bypass pipe (5) is inserted into the sanitary water inlet pipe (8), and the sanitary water inlet pipe (8) covered with the bypass pipe (5) passes through the condensing heat exchange (6), the circulating water outlet pipe (22) passes through the main heat exchanger (3), the plate heat exchanger (16) is installed in the water tank (11), and the plate heat exchanger (16) is provided with a circulation Water inlet (13), circulating water outlet (12), sanitary water inlet (17), sanitary water outlet (14), one end of circulating water inlet pipe (20), bypass pipe outlet (15) respectively Access the water tank (11), and the water pump (21) is electrically connected with the power supply. 2. The water storage condensing gas water heater with internal circulation device according to claim 1, characterized in that the water outlet (15) of the bypass pipe is placed at the lower part of the plate heat exchanger (16). 3. The storage-type condensing gas water heater with an internal circulation device according to claim 1 or 2, characterized in that the plate heat exchanger (16) is installed below the inside of the water tank (11). 4. The storage-type condensing gas water heater with internal circulation device according to claim 3, characterized in that the volume of the water tank (11) is 5L-30L. 5. The storage-type condensing gas water heater with an internal circulation device according to claim 4, characterized in that the volume of the water tank (11) is 8L-25L. 6. The storage-type condensing gas water heater with internal circulation device according to claim 5, characterized in that the volume of the water tank (11) is 20L.

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