Full-premixing floor type condensing furnace

Abstract

The utility model relates to a full-premixing floor type condensing furnace which comprises a heat exchanger communicated with a radiator of heating equipment and a water tank, and a combustion device for heating the heat exchanger, a first circulating pipeline is arranged between the heat exchanger and the water tank; a second circulating pipeline is arranged between the heat exchanger and the heating equipment radiator; a first switch valve is arranged on the first circulating pipeline, and a second switch valve is arranged on the second circulating pipeline; the first switch valve is opened, the second switch valve is closed, and liquid entering the heat exchanger circularly flows between the heat exchanger and the water tank along the first circulating pipeline; the heat exchanger and the water tank are in a gas water heater working mode; the first switch valve is closed, the second switch valve is opened, the liquid entering the heat exchanger circularly flows between the heat exchanger and the heating equipment radiator along the second circulating pipeline, and the heat exchanger and the heating equipment radiator are in a heating working mode. The heating stove and the gas water heater are integrated on the same stove body, and the liquid heating time can be prolonged by arranging the water tank.

Description

TECHNICAL FIELD

[0001] The utility model relates to a heating technical field, especially a full premixing floor type condensing furnace. BACKGROUND

[0002] The existing heating furnace and gas water heater are mostly set in a split type, and the internal structures of the heating furnace and the gas water heater are generally similar. The gas water heater mainly comprises a burner and a heat exchanger, and the liquid entering the heat exchanger is heated by the high-temperature flue gas of the burner, so that the heat exchanger flows out hot water. The hot water only passes through the heat exchanger to output hot water, and the heating time is relatively short. SUMMARY

[0003] The utility model discloses a full premixing floor type condensing furnace, which is characterized in that a circulating water channel is arranged between the water tank and the heat exchanger, and the opening and closing of the circulating water channel is controlled by the corresponding switch valve, so that the heat exchanger and the water tank are in the working mode of the gas water heater, or the heat exchanger and the heating equipment radiator are in the heating working mode. The heating furnace and the gas water heater are combined in the same furnace body, and the liquid heating time can be increased by arranging the water tank.

[0004] A full premixing floor type condensing furnace designed for this purpose comprises a heat exchanger connected to a heating equipment radiator and a water tank, and a combustion device for heating the heat exchanger; a first circulating pipeline is arranged between the heat exchanger and the water tank, and a second circulating pipeline is arranged between the heat exchanger and the heating equipment radiator.

[0005] A first switch valve is arranged on the first circulating pipeline, and a second switch valve is arranged on the second circulating pipeline.

[0006] When the first switch valve is opened and the second switch valve is closed, the liquid entering the heat exchanger circulates between the heat exchanger and the water tank along the first circulating pipeline; the heat exchanger and the water tank are in the working mode of the gas water heater.

[0007] When the first switch valve is closed and the second switch valve is opened, the liquid entering the heat exchanger circulates between the heat exchanger and the heating equipment radiator along the second circulating pipeline, and the heat exchanger and the heating equipment radiator are in the heating working mode.

[0008] A spiral coil is arranged in the water tank and connected to the heat exchanger, and a first liquid inlet and a first liquid outlet are arranged on the spiral coil. The first liquid inlet and the first liquid outlet of the spiral coil are respectively connected to the heat exchanger and form the first circulating pipeline.

[0009] The water tank is provided with a spiral coil pipe for heat exchange with liquid in the water tank, the heat exchanger and the combustion device are arranged in the furnace body, the furnace body is provided with a cold water inlet end connected with a first circulation pipeline, a water inlet valve and a water pump are arranged between the first circulation pipeline and the cold water inlet end, cold water enters the heat exchanger through the cold water inlet end to exchange heat with flue gas generated by combustion of the combustion device to form hot water, and the hot water flows in the heat exchanger and the spiral coil pipe of the water tank in a circulation mode.

[0010] The furnace body is provided with a second liquid inlet end and a second liquid outlet end connected with the heat exchanger and the radiator of the heating device, the spiral coil pipe is provided with a first liquid inlet end and a first liquid outlet end, the first liquid outlet end is connected with the water outlet end of the heat exchanger and is provided with a second switch valve between the first liquid outlet end and the second liquid outlet end, the first liquid inlet end is connected with the water inlet end of the spiral coil pipe and is provided with a first switch valve between the first liquid inlet end and the second liquid inlet end, the first switch valve is closed and the second switch valve is opened, liquid entering the heat exchanger enters the radiator of the heating device through the second liquid outlet end, liquid of the radiator of the heating device returns to the heat exchanger through the second liquid inlet end, and a second circulation pipeline is formed between the radiator of the heating device, the heat exchanger, the second liquid inlet end and the second liquid outlet end.

[0011] The water tank is provided with a third liquid inlet end, the third liquid inlet end and the cold water inlet end are connected with a water inlet device through a three-way valve, liquid of the water inlet device enters the heat exchanger through the cold water inlet end, and liquid of the water inlet device enters the inner cavity of the water tank through the third liquid inlet end.

[0012] The water tank is provided with a sewage outlet connected with the inner cavity of the water tank.

[0013] The water tank is provided with a pressure relief valve for releasing internal pressure of the water tank.

[0014] The water tank is provided with a hot water outlet connected with the inner cavity of the water tank, and the water tank is provided with a temperature sensor for detecting the temperature of liquid in the inner cavity.

[0015] The combustion device comprises a combustion premixer and a combustion ignition row, the combustion premixer is provided with an air inlet, a first gas inlet and a mixed gas outlet, the mixed gas outlet is connected with the inner cavity of the combustion ignition row, the first gas inlet is connected with a gas valve through a gas pipeline, the air inlet is connected with a fan through an air guide cover, and one end of the gas pipeline is connected with a second gas inlet.

[0016] The heat exchanger is provided with a condensate drain outlet connected with a condensate drain pipe, the heat exchanger and the combustion device are arranged in the furnace body, the furnace body is provided with an expansion tank for adjusting water pressure, the furnace body is provided with a smoke exhaust seat, and the furnace body is provided with a second gas inlet connected with the combustion device.

[0017] The utility model has the advantages of the following beneficial effects:

[0018] The circulating water paths are arranged between the water tank, the heating equipment radiator and the heat exchanger, and the opening and closing of the circulating water paths are controlled by corresponding switch valves, so that the heat exchanger and the water tank are in the gas water heater working mode, or the heat exchanger and the heating equipment radiator are in the heating working mode, the heating furnace and the gas water heater are assembled on the same furnace body, and the liquid heating time can be increased by arranging the water tank. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a plane structure schematic view of a full premixing floor type condensing furnace according to an embodiment of the present application.

[0020] Figure 2 It is a plane structure schematic view of a water tank according to an embodiment of the present application.

[0021] Figure 3 It is a three-dimensional structure schematic view of a combustion premixer according to an embodiment of the present application.

[0022] Figure 4 It is a plane structure schematic view of the heat exchanger and the heating equipment radiator in the heating working mode according to an embodiment of the present application.

[0023] Figure 5 It is a plane structure schematic view of the heat exchanger and the water tank in the gas water heater working mode according to an embodiment of the present application. DETAILED DESCRIPTION

[0024] The present application will be further described below in combination with the drawings and embodiments.

[0025] Referring to Figures 1-5 A full premixing floor type condensing furnace, comprising a heat exchanger 2 connected with a heating equipment radiator 25 and a water tank 11, and a combustion device 3 heating the heat exchanger 2; a first circulating pipeline is arranged between the heat exchanger 2 and the water tank 11, and a second circulating pipeline is arranged between the heat exchanger 2 and the heating equipment radiator 25;

[0026] A first switch valve 15 is arranged on the first circulating pipeline, and a second switch valve 9 is arranged on the second circulating pipeline;

[0027] The first switch valve 15 is opened, the second switch valve 9 is closed, the liquid entering the heat exchanger 2 circulates and flows between the heat exchanger 2 and the water tank 11 along the first circulating pipeline; the heat exchanger 2 and the water tank 11 are in the gas water heater working mode;

[0028] The first switch valve 15 is closed, the second switch valve 9 is opened, the liquid entering the heat exchanger 2 circulates and flows between the heat exchanger 2 and the heating equipment radiator 25 along the second circulating pipeline, and the heat exchanger 2 and the heating equipment radiator 25 are in the heating working mode.

[0029] In the embodiment, the first switch valve 15 and the second switch valve 9 are electromagnetic valves.

[0030] The water tank 11 is provided with a spiral coil 22 communicated with the heat exchanger 2, and the spiral coil 22 is provided with a first liquid inlet end 23 and a first liquid outlet end 24. The first liquid inlet end 23 and the first liquid outlet end 24 of the spiral coil 22 are communicated with the heat exchanger 2 respectively and form a first circulation pipeline.

[0031] The spiral coil 22 is beneficial to prolong the liquid circulation flow between the heat exchanger and the spiral coil 22, and extend the water heating.

[0032] The water tank 11 is provided with a spiral coil 22 for liquid heat exchange with the water tank 11. The heat exchanger 2 and the combustion device 3 are arranged in the furnace body 1. The furnace body 1 is provided with a cold water inlet end 16 communicated with the first circulation pipeline. The first circulation pipeline and the cold water inlet end 16 are provided with a water inlet valve 19 and a water pump 18. The cold water enters the heat exchanger 2 along the cold water inlet end 16 and exchanges heat with the flue gas generated by the combustion of the combustion device 3 to form hot water. The hot water circulates in the heat exchanger 2 and the spiral coil 22 of the water tank 11 along the first circulation pipeline.

[0033] The furnace body 1 is provided with a second liquid inlet end 7 and a second liquid outlet end 8 communicated with the heat exchanger 2 and a heating equipment radiator 25. The spiral coil 22 is provided with a first liquid inlet end 23 and a first liquid outlet end 24. The first liquid outlet end 24 is communicated with the water outlet end of the heat exchanger 2 and is provided with the second switch valve 9 between the second liquid outlet end 8. The first liquid inlet end 23 is communicated with the water inlet end of the spiral coil 22 and is provided with the first switch valve 15 between the second liquid inlet end 7. When the first switch valve 15 is closed and the second switch valve 9 is opened, the liquid entering the heat exchanger 2 enters the heating equipment radiator 25 along the second liquid outlet end 8. The liquid of the heating equipment radiator 25 returns to the heat exchanger 2 along the second liquid inlet end 7. The second circulation pipeline is formed between the heating equipment radiator 25, the heat exchanger 2, the second liquid inlet end 7 and the second liquid outlet end 8.

[0034] The water tank 11 is provided with a third liquid inlet end 13. The third liquid inlet end 13 and the cold water inlet end 16 are connected to a water inlet device through a three-way valve 26. The liquid of the water inlet device enters the heat exchanger 2 through the cold water inlet end 16. The liquid of the water inlet device enters the inner cavity of the water tank 11 through the third liquid inlet end 13.

[0035] The water tank 11 is provided with a sewage outlet 12 communicated with the inner cavity of the water tank 11.

[0036] The water tank 11 is provided with a pressure relief valve 10 for releasing the internal pressure thereof.

[0037] The water tank 11 is provided with a hot water outlet 14 communicated with the inner cavity of the water tank 11. The water tank 11 is provided with a temperature sensor 20 for detecting the temperature of the liquid in the inner cavity thereof.

[0038] The combustion device 3 comprises a combustion premixer 27 and a combustion ignition row, the combustion premixer 27 is provided with an air inlet 28, a first gas inlet 29 and a mixed gas outlet 30; the mixed gas outlet 30 is communicated with the inner cavity of the combustion ignition row, the first gas inlet 29 is connected with the gas valve 6 through a gas pipeline, the air inlet 28 is connected with the fan 4 through an air guide cover, and one end of the gas pipeline is connected with the second gas inlet 17.

[0039] The air enters the combustion premixer 27 to mix with the gas, and the mixed gas enters the inner cavity of the combustion ignition row under the action of the fan 4, so that the gas can be fully combusted when the combustion ignition row is ignited.

[0040] The heat exchanger 2 is provided with a condensate drainage port 5 for connecting a condensate drainage pipe, the heat exchanger 2 and the combustion device 3 are arranged in the furnace body 1, the furnace body 1 is provided with an expansion water tank 31 for adjusting water pressure, the furnace body 1 is provided with a smoke exhaust seat 32, and the furnace body 1 is provided with the second gas inlet 17 for connecting with the combustion device 3.

[0041] In the embodiment, the waterway connection mode of the expansion water tank 31 belongs to the prior art, which will not be described in detail here.

[0042] The working principle is as follows: the full premixing floor type condensing furnace gives priority to hot water, and the liquid temperature of the water tank 11 reaches the target set temperature first, and then switches to the heating working mode.

[0043] The drain port 12 of the water tank 11 is connected to a floor drain to drain the sewage in the water tank 11, and the drain port 12 can be connected to a sewage pipe, and the sewage pipe is provided with an electromagnetic valve, when the electromagnetic valve is opened, the drain port 12 drains the liquid in the water tank 11, and the water tank 11 is provided with a hot water outlet 14 connected to a shower or faucet for hot water.

[0044] The second gas inlet 17 is connected to a gas cylinder or a natural gas inlet pipe.

[0045] The cold water inlet end 16 is connected to a tap water, and the water inlet valve 19 is opened to supply water to the heat exchanger 2. Or in the heating mode, the water inlet valve 19 is opened to supplement 0.15~0.2MPa of heating system water, and after completion, the water inlet valve 19 is closed.

[0046] The tap water is continuously supplemented into the water tank 11 from the third liquid inlet end 13 of the water tank 11, and the water tank 11 is provided with a pressure relief valve 10, which is opened when the temperature or pressure exceeds the set pressure, to protect the safety of the water tank 11.

[0047] After starting, the water pump 18 operates, the stop valve 9 is closed, the stop valve 15 is opened, and the heating water of the system flows from the machine into the coil of the water tank 11, heats the water of the water tank, and then flows back to the machine, forming a small heating cycle.

[0048] When the water circuit is running, the gas enters the gas valve through the gas port, then enters the combustion premixer 27 through the pipeline, in the combustion premixer 27, the gas and the air are mixed according to the set proportion, and then are blown to the combustion ignition by the fan 4 to burn. The high-temperature flue gas of the combustion continuously heats the heating water flowing through the heat exchanger 2, the flue gas is discharged out of the furnace body 1 through the smoke pipe and the exhaust seat 32, and the condensed water generated in the heat exchanger 2 is discharged out of the furnace body 1 through the condensate drain port 5. When the liquid of the water tank water 11 reaches the set temperature, the machine switches to the heating mode.

[0049] When the water circuit is running, the water circulation flows between the spiral coil pipe 22 of the water tank 11 and the coil pipe of the heat exchanger 2, the water circuit flows for a long time, the hot water of the spiral coil pipe 22 exchanges heat with the liquid in the cavity of the water tank 11 to heat the liquid in the cavity of the water tank 11.

[0050] When the heating is running, the water pump is running, the second switch valve 9 is opened, the first switch valve is closed, the heating water flows to the heating device radiator 25 and does not pass through the spiral coil pipe 22 of the water tank 11, and the combustion device 3 burns to continuously heat the heating water, and stops after reaching the set temperature.

[0051] The above is the preferred scheme of the utility model, the basic principle, the main features and the advantages of the utility model are displayed and described. It should be understood by those skilled in the art that the utility model is not limited by the above examples, the above examples and the description in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A fully premixing floor type condensing furnace, characterized in that: The application relates to a gas water heater, which comprises a heat exchanger (2) connected with a radiator (25) of a heating device and a water tank (11), and a combustion device (3) for heating the heat exchanger (2); a first circulating pipeline is arranged between the heat exchanger (2) and the water tank (11), and a second circulating pipeline is arranged between the heat exchanger (2) and the radiator (25) of the heating device. A first switch valve (15) is arranged on the first circulating pipeline, and a second switch valve (9) is arranged on the second circulating pipeline. When the first switch valve (15) is opened and the second switch valve (9) is closed, liquid entering the heat exchanger (2) flows along the first circulating pipeline between the heat exchanger (2) and the water tank (11); the heat exchanger (2) and the water tank (11) are in a gas water heater working mode. When the first switch valve (15) is closed and the second switch valve (9) is opened, liquid entering the heat exchanger (2) flows along the second circulating pipeline between the heat exchanger (2) and the radiator (25) of the heating device; the heat exchanger (2) and the radiator (25) of the heating device are in a heating working mode.

2. The fully premix floor type condensing furnace according to claim 1, wherein: The water tank (11) is provided with a spiral coil (22) connected with the heat exchanger (2); the spiral coil (22) is provided with a first liquid inlet end (23) and a first liquid outlet end (24); the first liquid inlet end (23) and the first liquid outlet end (24) of the spiral coil (22) are connected with the heat exchanger (2) and form the first circulating pipeline.

3. The fully premix floor type condensing furnace according to claim 1, wherein: The water tank (11) is provided with a spiral coil (22) for heat exchange with liquid in the water tank (11); the heat exchanger (2) and the combustion device (3) are arranged in a furnace body (1); the furnace body (1) is provided with a cold water inlet end (16) connected with the first circulating pipeline; a water inlet valve (19) and a water pump (18) are arranged between the first circulating pipeline and the cold water inlet end (16); cold water enters the heat exchanger (2) through the cold water inlet end (16) and exchanges heat with flue gas generated by combustion of the combustion device (3) to form hot water; the hot water flows along the first circulating pipeline in the heat exchanger (2) and the spiral coil (22) of the water tank (11).

4. The fully premix floor type condensing furnace according to claim 3, characterized in that: The furnace body (1) is provided with a second liquid inlet end (7) and a second liquid outlet end (8) connected with the heat exchanger (2) and the radiator (25) of the heating device; the spiral coil (22) is provided with a first liquid inlet end (23) and a first liquid outlet end (24); the first liquid outlet end (24) is connected with a water outlet end of the heat exchanger (2) and is connected with the second liquid outlet end (8) through the second switch valve (9); the first liquid inlet end (23) is connected with a water inlet end of the spiral coil (22) and is connected with the second liquid inlet end (7) through the first switch valve (15); when the first switch valve (15) is closed and the second switch valve (9) is opened, liquid entering the heat exchanger (2) enters the radiator (25) of the heating device through the second liquid outlet end (8); liquid in the radiator (25) of the heating device returns to the heat exchanger (2) through the second liquid inlet end (7); the second circulating pipeline is formed among the radiator (25) of the heating device, the heat exchanger (2), the second liquid inlet end (7) and the second liquid outlet end (8).

5. The fully premix floor type condensing furnace according to claim 3, characterized in that: The water tank (11) is provided with a third liquid inlet end (13), and the third liquid inlet end (13) and a cold water inlet end (16) are connected with a water inlet device through a three-way valve (26). The liquid of the water inlet device enters the heat exchanger (2) through the cold water inlet end (16), and the liquid of the water inlet device enters the inner cavity of the water tank (11) through the third liquid inlet end (13).

6. The fully premix floor type condensing furnace according to claim 1, wherein: The water tank (11) is provided with a sewage outlet (12) which is communicated with the inner cavity of the water tank (11).

7. The fully premix floor type condensing furnace according to claim 1, wherein: The water tank (11) is provided with a pressure relief valve (10) for releasing the internal pressure.

8. The fully premix floor type condensing furnace according to claim 1, wherein: The water tank (11) is provided with a hot water outlet (14) which is communicated with the inner cavity of the water tank (11), and the water tank (11) is provided with a temperature sensor (20) for detecting the temperature of the liquid in the inner cavity.

9. The fully premix floor type condensing furnace according to claim 1, wherein: The combustion device (3) comprises a combustion premixer (27) and a combustion ignition row, and the combustion premixer (27) is provided with an air inlet (28), a first gas inlet (29) and a mixed gas outlet (30). The mixed gas outlet (30) is communicated with the inner cavity of the combustion ignition row, the first gas inlet (29) is connected with a gas valve (6) through a gas pipeline, the air inlet (28) is connected with a fan (4) through an air guide cover, and one end of the gas pipeline is connected with a second gas inlet (17).

10. The fully premix floor type condensing furnace according to claim 1, wherein: The heat exchanger (2) is provided with a condensate drainage port (5) for connecting a condensate drainage pipe, and the heat exchanger (2) and the combustion device (3) are arranged in a furnace body (1). The furnace body (1) is provided with an expansion water tank (31) for adjusting water pressure, a smoke exhaust seat (32) and a second gas inlet (17) for connecting with the combustion device (3).

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