A gas energy-saving stove with heat storage function

Abstract

The invention discloses a gas energy-saving stove with a heat storage function, comprising a stove body and at least one combustion chamber, an outer table panel is provided on the upper surface of the stove body, a circular mounting hole is opened on the outer table panel, the combustion chamber is installed in the circular mounting hole, a combustion head is provided at the bottom center of each combustion chamber, a front door assembly is provided on the front side of the stove body, a control switch is provided on the front door assembly, side guard plates are provided on the left and right sides of the stove body respectively, a built-in water tank and a fan are provided under the outer table panel, tap water is stored in the built-in water tank, a water outlet pipe and a water outlet pipe are connected to the built-in water tank, a hot water circulation pump is provided on the water outlet pipe of the built-in water tank, the combustion chamber is connected to a main flue, the main flue is connected to a flue assembly, a heat exchanger is provided in the flue assembly, the stove is simple to use and has an energy storage function.

Description

Technical Field

[0001] The invention relates to the technical field of gas energy-saving stoves, and in particular to a gas energy-saving stove with a heat storage function. Background Art

[0002] As a kitchen appliance, gas stoves are widely used. After heating is completed, the existing gas stoves directly discharge the smoke after combustion, and a large amount of heat is also lost with the discharge of the smoke, resulting in low thermal utilization rate of gas combustion, high energy consumption of gas stoves, and possible environmental pollution. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a gas energy-saving stove with a heat storage function, comprising a stove body and at least one combustion chamber, an outer table panel is provided on the upper surface of the stove body, a circular mounting hole is opened on the outer table panel, the combustion chamber is installed in the circular mounting hole, a burner head is provided at the bottom center of each combustion chamber, a front door assembly is provided on the front side of the stove body, a control switch is provided on the front door assembly, side guard plates are provided on the left and right sides of the stove body respectively, a built-in water tank and a fan are provided under the outer table panel, tap water is stored in the built-in water tank, the combustion chamber is connected to a main flue, the main flue is connected to a flue assembly, and the A heat exchanger is provided in the flue assembly, and a water outlet pipe and a water outlet pipe are connected to the built-in water tank. The water outlet pipe is respectively connected to the corresponding combustion chamber and the water inlet end of the heat exchanger, and the water inlet pipe is respectively connected to the corresponding combustion chamber and the water outlet end of the heat exchanger. The water outlet pipe of the built-in water tank is connected to the water inlet of a hot water circulation pump, and the water inlet of the hot water circulation pump is connected to the tap water inlet; a shell is wrapped around the burner head, and a natural gas inlet hole is provided on the lower end surface of the burner head, and the natural gas inlet hole is connected to a natural gas inlet pipe. The bottom of the burner head is also connected to an air inlet pipe, and the air inlet pipe is connected to the air outlet end of the fan.

[0004] Furthermore, a support frame is provided inside the stove body, a fan bracket and a hot water circulation pump bracket are fixedly connected to the support frame, and side guard plates are provided with side guard plate hanging ears, and the side guard plate hanging ears are fixedly connected to the support frame.

[0005] Furthermore, a rear vertical plate is provided at the rear end of the upper side of the outer table panel, and at least one faucet is provided on the front side wall of the rear vertical plate, and the faucet is connected to the water outlet end of the hot water circulation pump through a pipe. Cross beams are respectively provided at the front end, left end and right end of the upper side of the outer table panel, and a rectangular groove is formed between the cross beam, the rear vertical plate and the outer table panel, and stove legs for supporting the stove body are provided on the lower side of the outer table panel.

[0006] Furthermore, the combustion chamber has a heat exchange function, including a flow cavity, a combustion chamber water inlet, a combustion chamber water outlet and an observation port, the combustion chamber water inlet and the combustion chamber water outlet are both connected to the flow cavity, the combustion chamber absorbs waste heat from the combustion head and heats water in the flow cavity, the combustion chamber also includes an observation port, and the observation port is arranged opposite to the main flue.

[0007] Furthermore, the combustion chamber includes an inner layer of the combustion chamber and an outer layer of the combustion chamber, the outer layer of the combustion chamber is arranged around the outside of the inner layer of the combustion chamber, an outer flange is provided at the upper edge of the inner layer of the combustion chamber, a plurality of first fins are provided on the inner wall of the inner layer of the combustion chamber, and a plurality of second fins are provided on the outer wall, the first fins are spirally shaped, extending from the bottom of the combustion chamber to the edge of the combustion chamber, and are evenly distributed on the inner wall of the inner layer of the combustion chamber, and the second fins are strip-shaped, extending from the bottom of the combustion chamber to the edge of the combustion chamber, and are evenly distributed on the outer wall of the inner layer of the combustion chamber.

[0008] Furthermore, the flue component includes an inner flue component and an outer flue component, the inner flue component is arranged inside the outer flue component, an exhaust interface is provided at the upper end of one side of the outer flue component, an exhaust valve is connected to the exhaust interface, a flue heat exchange water inlet is provided at the lower end of the outer flue component, a flue heat exchange water outlet is provided at the upper end of the other side, a smoke cap is provided on the top of the inner flue component, and the heat exchanger in the inner flue component is a finned copper tube heat absorber.

[0009] Furthermore, the combustion chamber, the heat exchanger, the built-in water tank, the tap water inlet and the pipes connecting the hot water circulation pump are respectively provided with a first solenoid valve, a second solenoid valve, a third solenoid valve and a fourth solenoid valve, and the pipe connecting the combustion head and the weather air intake pipe is provided with a gas solenoid valve.

[0010] Furthermore, the built-in water tank is provided with a thermocouple and an electric contact water level gauge, the thermocouple is used to detect the temperature of the built-in water tank, the electric contact water level gauge is located at the upper end of the side wall of the built-in water tank, and the built-in water tank is also connected to a sewage pipe.

[0011] Furthermore, a natural gas channel assembly is provided in the middle of the burner head, a gap between the natural gas channel assembly and the outer shell forms a first annular air channel, a second air channel is provided in the middle of the natural gas channel assembly, the second air channel is connected to the air inlet hole on the lower end surface of the burner head, the second air channel is also connected to the first air channel, and a combustion cap is clamped on the burner head; the natural gas channel assembly includes a conical gas column, and at least two natural gas channels with the same taper are evenly arranged in the gas column along the circumferential direction, and each of the natural gas channels is a spiral structure.

[0012] Furthermore, at least two first guide grooves are spirally provided on the inner wall of the shell and the outer wall of the gas column, and the two first guide grooves at corresponding positions are symmetrically arranged; a second annular cone-shaped air channel is provided in the middle of the gas column, and at least two second guide grooves are spirally provided on the channel walls on both sides of the second air channel along the taper direction of the gas column, and the two second guide grooves at corresponding positions are symmetrically arranged, the first guide groove, the second guide groove and the natural gas channel have the same cone angle and pitch, and a first annular channel and a second annular channel are provided in sequence in the lower part of the burner head from bottom to top, a partition is provided between the first annular channel and the second annular channel, and three natural gas vertical bridge channels are evenly arranged on the partition in a circumferential direction; the first annular channel is connected to the natural gas inlet hole, and the second annular channel is connected to each natural gas channel.

[0013] Furthermore, three horizontal air bridge channels are evenly arranged in the partition along the circumferential direction, the first air channel and the second air channel are connected by the three horizontal air bridge channels, and the three horizontal air bridge channels and the natural gas vertical bridge channel are spaced apart from each other.

[0014] Furthermore, three positioning grooves are evenly arranged on the outer shell along the circumferential direction, and a positioning boss is provided at the position corresponding to the positioning groove on the combustion cover, and a slope structure which is wide at the top and narrow at the bottom is provided on the positioning boss, and the position of the slope structure is clamped in the positioning groove at the corresponding position, and a combustion nozzle is provided at the position corresponding to the opening end of each natural gas channel on the combustion cover, and the diameter of each combustion nozzle is smaller than the diameter of the opening end of the natural gas channel at the corresponding position, and three arc grooves are evenly arranged along the circumferential direction at the position corresponding to the first air channel on the combustion cover.

[0015] In the present invention, a combustion chamber and a heat exchanger are provided to absorb the heat of flue gas generated during the combustion process. Water from a built-in water tank or a tap water inlet is driven into the combustion chamber and the heat exchanger by a hot water circulation pump. The tap water is heated by the heat of the flue gas in the combustion chamber and the heat exchanger. The heated water flows back into the built-in water tank and is finally stored in the built-in water tank, thereby realizing a heat storage function, improving the utilization rate of the flue gas heat, and reducing energy waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the overall structural diagram of the gas energy-saving stove with heat storage function of the present invention.

[0017] Figure 2 yes Figure 1 The front view of the gas energy-saving stove is shown.

[0018] Figure 3 yes Figure 1 The rear view of the gas energy-saving stove is shown.

[0019] Figure 4 yes Figure 1 A bottom view of the gas energy-saving stove is shown.

[0020] Figure 5 yes Figure 1 The internal structure diagram of the gas energy-saving stove is shown.

[0021] Figure 6 yes Figure 1 An exploded view of the combustion chamber of a gas energy-saving stove is shown.

[0022] Figure 7 yes Figure 1 The internal structure diagram of the combustion chamber of the gas energy-saving stove is shown.

[0023] Figure 8 yes Figure 1 The structural diagram of the burner head of the gas energy-saving stove is shown.

[0024] Fig. 9 yes Figure 8 A top view of the burner head is shown.

[0025] Fig.10 yes Fig. 9 AA view shown.

[0026] Fig.11 yes Figure 8 A schematic diagram of the partial cross-sectional structure of the combustion cover in the combustion head shown. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings.

[0028] The present invention provides a gas energy-saving stove with a heat storage function, comprising a stove body 1 and at least one combustion chamber 2. The upper surface of the stove body 1 is provided with an outer table panel 3, and a circular mounting hole is opened on the outer table panel 3. The combustion chamber 2 is installed in the circular mounting hole. A heat insulating material is provided between the outer table panel 3 and the combustion chamber 2 to isolate the high temperature of the combustion chamber 2 so that the temperature of the outer table panel 3 remains constant. A combustion head 4 is provided at the bottom center of each combustion chamber 2, and a main flue 10, a built-in water tank 8 and a fan 9 are provided under the outer table panel 3. The main flue 10 is connected to a flue assembly 11, and a heat exchanger 12 is provided in the flue assembly 11. Tap water is stored in the built-in water tank 8, and a water outlet pipe and a water outlet pipe are connected to the built-in water tank 8. The water outlet pipes are respectively connected to the water inlet ends of the corresponding combustion chamber 2 and the heat exchanger 12, and the water inlet pipes are respectively connected to the water outlet ends of the corresponding combustion chamber 2 and the heat exchanger 12. A hot water circulation pump 13 is also provided on the water outlet pipe of the built-in water tank 8 for circulating water to the combustion chamber 2 and the heat exchanger 12. A tap water inlet 14 is connected to the water inlet of the hot water circulation pump 13, and water can be replenished through the tap water inlet 14 when needed. The heat exchanger 12 is used to absorb the heat of the flue to heat the tap water flowing from the built-in water tank 8, and then flow back to the built-in water tank 8 through the pipeline, and finally stored in the built-in water tank 8; the combustion chamber 2 has a heat exchange function, and the combustion chamber 2 heats the tap water flowing from the built-in water tank 8, and then flows back to the built-in water tank 8 through the pipeline. A shell 15 is wound around each of the burner heads 4, and a natural gas inlet hole 16 is provided on the lower end surface of the burner head 4. The natural gas inlet hole 16 is connected to a natural gas inlet pipeline 17. The bottom of the burner head 4 is also connected to an air inlet pipeline, which is connected to the air outlet end of the fan 9. When in use, natural gas is introduced into the burner head 4 at the bottom of the combustion chamber 2 through the weather inlet pipeline 17, and air is introduced by the fan 9 at the same time, so that the air and natural gas are mixed to reach a certain air-fuel ratio and then fully burned.

[0029] A support frame 18 is provided inside the stove body 1, a front door assembly 5 is provided on the front side of the stove body 1, a control switch 6 is installed on the front door assembly 5, side guard plates 7 are provided on the left and right sides of the stove body 1, and side guard plate hanging ears 21 are provided on the side guard plates 7. The side guard plate hanging ears 21 are fixedly connected to the support frame 18 to increase the stability of the stove body 1. A fan bracket 19 and a hot water circulation pump 20 bracket are fixedly connected to the support frame 18 for supporting and fixing the fan 9 and the hot water circulation pump 13.

[0030] A rear vertical plate 22 is provided at the rear end of the upper side of the outer table panel 3, the flue assembly 11 is located at the rear side of the rear vertical plate 22, and at least one faucet 23 is provided on the front side wall of the rear vertical plate 22. The faucet 23 is connected to the water outlet of the hot water circulation pump 13, and the hot water stored in the water tank can be used through the faucet 23 when needed. Cross beams 24 are respectively provided at the front end, left end and right end of the upper side of the outer table panel 3, and a rectangular groove is formed between the cross beam 24 and the rear vertical plate 22 and the outer table panel 3 to prevent sewage in the outer table panel from flowing out and facilitate cleaning of the outer table panel 3; a stove leg 25 for supporting the stove body 1 is provided at the lower side of the outer table panel 3.

[0031] The combustion chamber 2 includes a combustion chamber inner layer 30 and a combustion chamber outer layer 31. The combustion chamber outer layer 31 is arranged around the outer side of the combustion chamber inner layer 30. The upper edge of the combustion chamber inner layer 30 extends outward to form an outer flange 32. The outer flange 32 is welded to the edge of the combustion chamber outer layer 31 so that a flow cavity 26 is formed between the combustion chamber inner layer 30 and the combustion chamber outer layer 31. The combustion chamber inner layer 30 is truncated cone-shaped. The inner wall of the combustion chamber inner layer 30 is evenly provided with first fins 33. The first fins 33 are arranged in a spiral shape along the combustion chamber inner layer 30 to circulate the spiral airflow generated by the combustion of the combustion head 4. The outer wall of the combustion chamber inner layer 30 is evenly provided with second fins 34. The second fins 34 are arranged vertically along the outer wall of the combustion chamber inner layer 30. A combustion chamber water inlet 27 is provided at the bottom of the combustion chamber outer interlayer 31, and a combustion chamber water outlet 28 is provided at the upper edge of the side wall of the combustion chamber outer interlayer 31. The combustion chamber water inlet 27 and the combustion chamber water outlet 28 are connected through the flow cavity 26; the combustion chamber water inlet 27 is connected to the water outlet of the hot water circulation pump 13, and the combustion chamber water outlet 28 is connected to the corresponding built-in water tank 8. When working, the hot water circulation pump 13 continuously transports tap water to the flow cavity 26 of the combustion chamber 2 through the combustion chamber water inlet 27 through the pipeline, and the radiation heat generated by the combustion chamber 2 after combustion is initially absorbed by the first fin 33 and the second fin 34 on the combustion chamber inner layer 30, and the heat is transferred to the water in the flow cavity 26 to heat it, and then flows out from the combustion chamber water outlet 28. The combustion chamber 2 is also provided with an observation port 29 for observing the situation in the combustion chamber 2, and the observation port 29 is arranged opposite to the main flue 10.

[0032] The flue assembly 11 includes an inner flue assembly 35 and an outer flue assembly 36. The inner flue assembly 35 is arranged inside the outer flue assembly 36. The heat exchanger 12 is arranged inside the inner flue assembly 35. The heat exchanger 12 is a finned copper tube heat absorber. A smoke cap 41 is provided on the top of the inner flue assembly 35 to prevent foreign matter from entering the inner flue assembly. An exhaust port 37 is provided at the upper end of one side of the outer flue assembly 36. An exhaust valve 38 is connected to the exhaust port 37 to discharge the gas generated by the heat exchanger 12 during the heat exchange process. A flue heat exchange water inlet 39 is provided at the lower end of one side of the outer flue assembly 36, and the flue heat exchange water inlet 39 is connected to the water outlet of the hot water circulation pump 13, and the flue heat exchange water inlet 39 is also connected to the water inlet end of the heat exchanger 12. A flue heat exchange water outlet 40 is provided at the upper end of the other side of the outer flue assembly 36, and the water outlet end of the heat exchanger 12 is connected to the flue heat exchange water outlet 40, and the flue heat exchange water outlet 40 is connected to the corresponding built-in water tank 8. When working, the hot water circulation pump 13 continuously transports tap water to the heat exchanger 12 in the flue assembly 11 through the flue heat exchange water inlet 39, and heat is exchanged in the heat exchanger 12, that is, the tap water absorbs the residual heat of the flue gas entering the flue assembly 11, and transfers the heat to the water in the heat exchanger 12 to heat it, so as to realize the conversion of the heat energy of the flue gas into the heat energy of water, and the tap water flows out from the flue heat exchange water outlet 40 after absorbing the heat energy.

[0033] The first solenoid valve 42, the second solenoid valve 43, the third solenoid valve 44 and the fourth solenoid valve 45 are respectively provided on the pipeline connecting the combustion chamber 2, the heat exchanger 12, the built-in water tank 8, the tap water inlet 14 and the hot water circulation pump 12. The first solenoid valve 42 is used to control the on-off of the connecting pipeline between the combustion chamber water inlet 27 and the water outlet of the hot water circulation pump 13, the second solenoid valve 43 is used to control the on-off of the connecting pipeline between the water inlet of the heat exchanger 12 and the water outlet of the hot water circulation pump 13, the third solenoid valve 44 is used to control the on-off of the connecting pipeline between the built-in water tank 8 and the water inlet of the hot water circulation pump 13, the fourth solenoid valve 45 is used to control the on-off of the connecting pipeline between the tap water inlet 14 and the hot water circulation pump 13, and the pipeline connecting the weather air intake pipe 17 and the combustion chamber 2 is provided with a gas solenoid valve 46, and the gas solenoid valve 46 is used to control the on-off of the connecting pipeline between the combustion head 4 and the weather air intake pipe.

[0034] The built-in water tank 8 is provided with a thermocouple 47 and an electric contact water level gauge 48. The electric contact water level gauge 48 is located at the upper end of the side wall of the built-in water tank 8. The thermocouple 47 is used to detect and display the water temperature in the system. The electric contact water level gauge 48 is used to control the water level in the built-in water tank 8. When the water level in the built-in water tank 8 is lower than the minimum water level, the fourth solenoid valve 45 between the tap water inlet 14 and the hot water circulation pump 13 is opened to add water. When the water level in the built-in water tank 8 is higher than the maximum water level, the fourth solenoid valve 45 is closed to stop the water supply. The built-in water tank 8 is also connected to a sewage pipe 49, which is used to discharge scale and sewage when the built-in water tank 8 and the pipeline are cleaned.

[0035] The combustion head 4 is surrounded by a shell 15, and a combustion cover 53 is clamped on the shell 15. Three positioning grooves 63 are evenly arranged on the shell 15 along the circumferential direction. A positioning boss 64 is provided at the position corresponding to the positioning groove 63 on the combustion cover 53. An inclined surface structure which is wider at the top and narrower at the bottom is provided on the positioning boss 64. The position of the inclined surface structure is clamped in the positioning groove 63 at the corresponding position, so that the combustion cover 53 can be firmly clamped on the shell 15 to prevent the combustion cover 15 from rotating or jumping laterally.

[0036] A natural gas channel assembly is provided in the middle of the burner head 4, and the natural gas channel assembly includes a conical gas column 54, in which a plurality of natural gas channels 55 with the same taper are evenly arranged along the circumferential direction, and each of the natural gas channels 55 is a spiral structure, so that the conical flame form formed after the natural gas and air are mixed and ignited increases the contact area between the flame and the pot body, improves the heat conduction efficiency, and at the same time makes the natural gas form a spiral airflow and then rotates and is discharged from the natural gas channel 55.

[0037] The lower part of the burner head 4 is provided with a first annular channel 58 and a second annular channel 59 in sequence from bottom to top. The first annular channel 58 is connected to the natural gas inlet hole 16. A partition plate 60 is provided between the first annular channel 58 and the second annular channel 59. Three natural gas vertical bridge channels 61 are evenly provided on the partition plate 60 along the circumferential direction. The second annular channel 59 is connected to each natural gas channel 55. The gap between the natural gas channel assembly and the shell 15 forms an annular first air channel 50. A plurality of first guide grooves 57 are spirally provided on the inner side wall of the shell 15 and the outer side wall of the gas column 54. The two first guide grooves 57 at corresponding positions are symmetrically arranged. A conical second air channel 51 is provided in the middle of the gas column 54. The second air channel 51 is provided in a conical shape. The air channel 51 is connected to the air inlet hole 52 on the lower end face of the burner head 4. On the channel walls on both sides of the second air channel 51, multiple second guide grooves 57 are spirally arranged along the taper direction of the gas column 54. The two second guide grooves 57 at corresponding positions are symmetrically arranged. The first guide groove 56, the second guide groove 57 and the natural gas channel 55 have the same taper angle and pitch, which can make the natural gas and air fully mixed to form a superimposed airflow with a stable structure, so that the mixed airflow remains stable; three air horizontal bridge channels 62 are evenly arranged in the circumferential direction in the partition 60, and the three air horizontal bridge channels 62 are arranged at intervals with the natural gas vertical bridge channel 61. The first air channel 50 and the second air channel 51 are connected by three air horizontal bridge channels 62. When working, the natural gas inlet hole 16 is connected to the natural gas inlet pipeline 17 to inject natural gas, and the air inlet hole 52 is connected to the air outlet end of the fan 8 to continuously input air.

[0038] A combustion nozzle 65 is provided at a position corresponding to the opening end of each natural gas channel 55 on the combustion cover 53, and the diameter of each combustion nozzle 65 is smaller than the diameter of the opening end of the natural gas channel 55 at the corresponding position; on the combustion cover 53, at a position corresponding to the first air channel 50, three sections of arc grooves 66 are evenly provided along the circumferential direction. Since the diameter of the combustion nozzle 65 is smaller than the diameter of the opening end of the natural gas channel 55 at the corresponding position, the flow speed of the mixed gas at this position is reduced, and the mixing period of air and natural gas is extended, and sufficient mixing between air and natural gas can be achieved to meet the air-fuel ratio requirement, thereby making the combustion more complete and improving the combustion efficiency of natural gas. At the same time, when the mixed gas passes through the combustion nozzle, the gas speed ejected from the combustion nozzle will increase and form a jet when the total amount of gas passing through is not reduced. When ignited, a jet flame is formed to ensure sufficient combustion and improve the heating efficiency of the flame.

[0039] When the present invention is in use, the fan 8, the hot water circulation pump 13 and all the solenoid valves are turned on, the control switch 7 is adjusted, and the burner head 4 is used to heat the pot in the combustion chamber 2. Tap water enters the combustion chamber 2 and the heat exchanger 12 from the combustion chamber water inlet 27 and the flue heat exchange water inlet 39 respectively through the hot water circulation pump 13. After heat exchange in the combustion chamber 2 and the heat exchanger 12, it flows out through the combustion chamber water outlet 28 and the flue heat exchange water outlet 40 and then enters the built-in water tank 8 for circulation. Finally, all the heat energy of the combustion flue gas is converted into the heat energy of water and stored in the built-in water tank 8. When needed, the hot water in the built-in water tank 8 can be directly used through the faucet 23. The whole process can continuously provide hot water, thereby achieving the effect of heat storage.

[0040] The above are only implementation modes of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure made using the contents of the present invention's specification and drawings, directly or indirectly used in other related technical fields, are also within the patent protection scope of the present invention.

Claims

1. A gas energy-saving stove with heat storage function, characterized in that: The invention comprises a stove body (1) and at least one combustion chamber (2), wherein the upper surface of the stove body (1) is provided with an outer table panel (3), the outer table panel (3) is provided with a circular mounting hole, the combustion chamber (2) is installed in the circular mounting hole, a heat insulating material is provided between the combustion chamber (2) and the outer table panel (3), a combustion head (4) is provided at the bottom center of each combustion chamber (2), a front door assembly (5) is provided on the front side of the stove body (1), a control switch (6) is provided on the front door assembly (5), side guard plates (7) are provided on the left and right sides of the stove body respectively, a built-in water tank (8) and a fan (9) are provided below the outer table panel (3), tap water is stored in the built-in water tank, a water outlet pipe and a water outlet pipe are connected to the built-in water tank (8), the combustion chamber (2) is connected to a main flue (10), and the main flue (10) ) is connected to a flue assembly (11), a heat exchanger (12) is provided in the flue assembly (11), the water outlet pipe of the built-in water tank (8) is respectively connected to the water inlet ends of the corresponding combustion chamber (2) and the heat exchanger (12), the water inlet pipe is respectively connected to the water outlet ends of the corresponding combustion chamber (2) and the heat exchanger (12), the water outlet pipe of the built-in water tank (8) is connected to the water inlet of a hot water circulation pump (13), and the water inlet of the hot water circulation pump (13) is connected to the tap water inlet (14); the burner head (4) is provided with a shell (15), the lower end surface of the burner head (4) is provided with a natural gas inlet hole (16), the natural gas inlet hole (16) is connected to a natural gas inlet pipe (17), the bottom of the burner head (4) is also connected to an air inlet pipe, and the air inlet pipe is connected to the air outlet end of the fan (9); A natural gas channel assembly is provided in the middle of the burner head (4); a gap between the natural gas channel assembly and the housing (15) forms a first annular air channel (50); a second air channel (51) is provided in the middle of the natural gas channel assembly; the second air channel (51) is communicated with an air inlet hole (52) on the lower end surface of the burner head (4); the second air channel (51) is also communicated with the first air channel (50); a burner cap (53) is clamped on the burner head (4); the natural gas channel assembly comprises a conical gas column (54); at least two natural gas channels (55) of the same taper are evenly arranged in the gas column (54) along the circumferential direction; each of the natural gas channels (55) is a spiral structure; At least two first guide grooves (56) are spirally provided on the inner side wall of the shell (15) and the outer side wall of the gas column (54), and the two first guide grooves (56) at corresponding positions are symmetrically arranged; a second annular conical air passage (51) is provided in the middle of the gas column (54), and at least two second guide grooves (57) are spirally provided on the channel walls on both sides of the second air passage (51) along the taper direction of the gas column (54), and the two second guide grooves (57) at corresponding positions are symmetrically arranged, and the first guide groove (56) and the second guide groove (57) are spirally provided. The groove (57) and the natural gas channel (55) have the same cone angle and pitch; a first annular channel (58) and a second annular channel (59) are sequentially provided in the lower part of the burner head (4) from bottom to top; a partition plate (60) is provided between the first annular channel (58) and the second annular channel (59); three natural gas vertical bridge channels (61) are evenly provided on the partition plate (60) along the circumferential direction; the first annular channel (58) is communicated with the natural gas inlet hole (16), and the second annular channel (59) is communicated with each natural gas channel (55); Three air horizontal bridge channels (62) are evenly arranged in the partition plate (60) along the circumferential direction, the first air channel (50) and the second air channel (51) are connected by the three air horizontal bridge channels (62), and the three air horizontal bridge channels (62) and the natural gas vertical bridge channel (61) are arranged at intervals from each other; The combustion chamber (2) has a heat exchange function, comprising a flow chamber (26), a combustion chamber water inlet (27), and a combustion chamber water outlet (28), wherein the combustion chamber water inlet (27) and the combustion chamber water outlet (28) are both in communication with the flow chamber (26), and the combustion chamber (2) absorbs waste heat from the burner head (4) and heats water in the flow chamber (26). The combustion chamber (2) further comprises an observation port (29), and the observation port (29) is arranged opposite to the main flue (10); The combustion chamber (2) comprises an inner combustion chamber layer (30) and an outer combustion chamber layer (31), wherein the outer combustion chamber layer (31) is arranged around the outer side of the inner combustion chamber layer (30), and an outer flange (32) is arranged at the upper edge of the inner combustion chamber layer (30), wherein the outer flange (32) is welded to the edge of the outer combustion chamber layer (31) so that a flow cavity (26) is formed between the inner combustion chamber layer (30) and the outer combustion chamber layer (31); a plurality of first fins (33) are arranged on the inner wall of the inner combustion chamber layer (30), and a plurality of second fins (34) are arranged on the outer wall, wherein the first fins (33) are spirally shaped, extending from the bottom of the combustion chamber (2) to the edge of the combustion chamber (2), and are evenly distributed on the inner wall of the inner combustion chamber layer (30); and the second fins (34) are strip-shaped, extending from the bottom of the combustion chamber (2) to the edge of the combustion chamber (2), and are evenly distributed on the outer wall of the inner combustion chamber layer (30).

2. A gas energy-saving stove with heat storage function according to claim 1, characterized in that: A support frame (18) is provided inside the stove body (1), a fan bracket (19) and a hot water circulation pump bracket (20) are fixedly connected to the support frame (18), and a side guard plate hanging ear (21) is provided on the side guard plate (7), and the side guard plate hanging ear (21) is fixedly connected to the support frame (18).

3. The gas energy-saving stove with heat storage function according to claim 1, characterized in that: A rear vertical plate (22) is provided at the rear end of the upper side of the outer table panel (3); at least one faucet (23) is provided on the front side wall of the rear vertical plate (22); the faucet (23) is connected to the water outlet of the hot water circulation pump (13) through a pipeline; cross beams (24) are provided at the front end, left end and right end of the upper side of the outer table panel (3); a rectangular groove is formed between the cross beam (24) and the rear vertical plate (22) and the outer table panel (3); and stove legs (25) for supporting the stove body (1) are provided at the lower side of the outer table panel (3).

4. The gas energy-saving stove with heat storage function according to claim 1, characterized in that: The flue assembly (11) comprises an inner flue assembly (35) and an outer flue assembly (36); the inner flue assembly (35) is arranged inside the outer flue assembly (36); an exhaust port (37) is provided at an upper end of one side of the outer flue assembly (36); an exhaust valve (38) is connected to the exhaust port (37); a flue heat exchange water inlet (39) is provided at a lower end of the outer flue assembly (36); a flue heat exchange water outlet (40) is provided at an upper end of the other side; a smoke cap (41) is provided at the top of the inner flue assembly (35); and the heat exchanger (12) in the inner flue assembly (35) is a finned copper tube heat absorber.

5. The gas energy-saving stove with heat storage function according to claim 1, characterized in that: A first solenoid valve (42), a second solenoid valve (43), a third solenoid valve (44) and a fourth solenoid valve (45) are respectively provided on the pipelines connecting the combustion chamber (2), the heat exchanger (12), the built-in water tank (8), the tap water inlet (14) and the hot water circulation pump (13), and a gas solenoid valve (46) is provided on the pipeline connecting the combustion head (4) and the natural gas inlet pipeline (17).

6. The gas energy-saving stove with heat storage function according to claim 1, characterized in that: The built-in water tank (8) is provided with a thermocouple (47) and an electric contact water level gauge (48); the thermocouple (47) is used to detect the temperature of the built-in water tank (8); the electric contact water level gauge (48) is located at the upper end of the side wall of the built-in water tank (8); and the built-in water tank (8) is also connected to a sewage pipe (49).

7. The gas energy-saving stove with heat storage function according to claim 1, characterized in that: Three positioning grooves (63) are evenly arranged on the shell (15) along the circumferential direction; a positioning boss (64) is provided at a position corresponding to the positioning groove (63) on the combustion cover (53); a slanted surface structure which is wider at the top and narrower at the bottom is provided on the positioning boss (64); the position of the slanted surface structure is engaged with the positioning groove (63) at the corresponding position; a combustion nozzle (65) is provided at a position corresponding to the opening end of each natural gas channel (55) on the combustion cover (53); the diameter of each combustion nozzle (65) is smaller than the diameter of the opening end of the natural gas channel (55) at the corresponding position; and three arc grooves (66) are evenly arranged at a position corresponding to the first air channel (50) on the combustion cover (53) along the circumferential direction.

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