Gas multi-function stove

Abstract

A gas multifunctional stove includes a gas stove, the gas stove includes a stove top, a burner is installed on the stove top, and also includes a radiator and a heat exchanger. The heat exchanger is composed of a shell and a heat receiving pipe installed inside the shell. The water inlet of the radiator is connected to the water outlet of the heat receiving pipe through a pipeline, and the water outlet of the radiator is connected to the water inlet of the heat receiving pipe through a pipeline. A circulating water pump is installed on a connecting pipeline between the radiator and the heat receiving pipe. A smoke inlet pipe and a smoke inlet hole are provided on the shell of the heat exchanger. The smoke inlet hole is located above the smoke inlet pipe, and a cover plate that can be opened and closed is installed on the smoke inlet hole. The heat exchanger shell is connected to the smoke exhaust system; the smoke inlet pipe is located on one side of the burner. The positive effects of the present invention are: adjusting the air duct and the damper can adjust the ventilation times of indoor air, forming five major functions, one machine with multiple uses, and low functional cost. The comprehensive utilization thermal efficiency is nearly 100% (most of the high-level energy is absorbed), and the use cost is low (theoretical calculation is lower than that of urban centralized heating).

Description

Technical Field

[0001] The invention relates to the technical field of multifunctional gas appliances, in particular to a multifunctional gas stove. Background Art

[0002] With the continuous development of social economy, increasingly serious environmental pollution has become a major problem in human life. In the vast rural areas of the country, due to the lack of centralized heating, most of the heating methods rely on the burning of coal and firewood, which further aggravates environmental pollution and causes serious haze. To solve such problems, coal-to-gas-to-electricity equipment is usually used, but the existing coal-to-gas equipment generally has the disadvantages of single function, low efficiency, high use and manufacturing costs, and large footprint. Summary of the invention

[0003] In order to solve the above problems, the purpose of the present invention is to provide a gas multi-functional stove, which not only meets the needs of coal to gas conversion, but also has multiple functions such as cooking, heating, purifying range hoods, supplying domestic hot water, ventilation, etc., and is low in cost, easy to use, occupies a small area, has the advantages of energy saving, environmental protection and comfort, low use cost and manufacturing cost, and is particularly suitable for rural areas and military barracks.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a gas multifunctional stove, including a gas cooker, the gas cooker including a stove top, a burner head installed on the stove top, and also including a radiator and a heat exchanger, the heat exchanger is composed of a shell and a heat receiving tube installed inside the shell, the water inlet of the radiator is connected with the water outlet of the heat receiving tube through a pipeline, the water outlet of the radiator is connected with the water inlet of the heat receiving tube through a pipeline, a circulating water pump is installed on a connecting pipeline between the radiator and the heat receiving tube, a smoke inlet pipe and a smoke inlet hole are provided on the shell of the heat exchanger, the smoke inlet hole is located above the smoke inlet pipe, an openable and closable cover plate is installed on the smoke inlet hole, the heat exchanger shell is connected to the smoke exhaust system; the smoke inlet pipe is located on one side of the burner head.

[0005] The connecting pipe between the water inlet of the radiator and the water outlet of the heated pipe is composed of a first water pipe and a second water pipe, a third water valve is installed on the second water pipe, the connecting pipe between the water outlet of the radiator and the water inlet of the heated pipe is composed of a third water pipe and a main water inlet pipe, a second water valve is installed on the third water pipe, one end of the first water pipe and the third water pipe are respectively connected to the water inlet and the water outlet of the radiator, the other ends of the first water pipe and the third water pipe are respectively connected to the two ends of the fourth water pipe, and a fifth water valve is installed on the fourth water pipe. The water outlet of the heat receiving pipe is connected to the water storage tank through the fifth water pipe, the sixth water valve is installed on the fifth water pipe, the water storage tank is connected to one end of the sixth water pipe, the other end of the sixth water pipe is respectively connected to the fourth water pipe, the second water pipe and the first water pipe, the first water valve is installed on the sixth water pipe, the water storage tank is also connected to the seventh water pipe, one end of the seventh water pipe is installed with a water user, the main water inlet pipe is installed with a water supply pipe, the water supply pipe is installed with a solenoid valve, the seventh water pipe is installed with a fourth water valve, and the main water inlet pipe is installed with a circulating water pump. A heat absorbing pipe is connected in series between the heat receiving pipe and the circulating water pump, and the heat absorbing pipe is located at the outer periphery of the burner. Burner head devices are connected in parallel at both ends of the passage in which the heat receiving tube and the heat absorbing tube are connected in series. The burner head device includes a furnace cover that matches the burner head. The two sides of the rear part of the furnace cover are respectively connected to the stove through a left-axis valve and a right-axis valve. The left-axis valve and the right-axis valve have the same structure. The left-axis valve and the right-axis valve both include a fixed seat. A valve core that rotates with the fixed seat is installed on the furnace cover. A cooling tube is installed inside the furnace cover. The two ends of the cooling tube are respectively connected to the valve cores of the left-axis valve and the right-axis valve. One end of the valve core that matches the fixed seat is conical. A valve core screw is fixedly installed on the conical end of the valve core. The valve core screw passes through the fixed seat. A nut is installed on the valve core screw. The nut is tightened. The conical end of the valve core can be axially pressed and matched with the fixing seat to improve the air tightness of the valve core and the fixing seat. A first through hole is opened on one side of the fixing seat, and a second through hole connected to its inner cavity is opened on the side of the valve core. The first through hole and the second through hole can be correspondingly connected; when the furnace cover is covered on the burner, the second through hole is connected to the first through hole, and when the furnace cover is flipped up and opened, the second through hole is disconnected from the first through hole; a water cavity is provided in the smoke inlet pipe, the water outlet of the smoke inlet pipe is connected to the first through hole of the left shaft valve, the water inlet of the smoke inlet pipe is connected to the water outlet of the circulating water pump, the airway of the smoke inlet pipe is connected to the heat exchanger shell, and a sealing gate is installed at the air inlet of the smoke inlet pipe. Two burners are installed side by side on the stove, a vertical partition is installed between the two burners, and a burner device is installed on each burner accordingly. The smoke exhaust system is a smoke emission and heat exchange system, which includes a smoke exhaust duct connected to a heat exchanger housing, a fume fan installed at one end of the smoke exhaust duct, a smoke heat exchange sleeve installed at the periphery of the smoke exhaust duct, the smoke heat exchange sleeve is communicated with the indoor room, the smoke heat exchange sleeve is connected with the air outlet of the double-inlet fan through a mixing air duct, one air inlet of the double-inlet fan is communicated with the outdoor atmosphere, and the other air inlet is communicated with the indoor environment through an old air duct, and a two-way damper that can be opened and closed is also installed on the mixing air duct.The smoke outlet pipe in the flue gas heat exchange sleeve includes a first flue and a second flue that are plugged into each other. The top of the first flue extends into the second flue. The outer diameter of the first flue that extends into the second flue is smaller than the inner diameter of the second flue. A water seal groove is formed between the first flue and the second flue. A third through hole is provided at the position where the second flue and the first flue are fitted. Corresponding to the position of the third through hole, a threaded hole is provided on the flue gas heat exchange sleeve. A regulating valve is installed in the threaded hole. The regulating valve includes a stud and a baffle. A baffle is installed at one end of the stud that extends into the flue gas heat exchange sleeve. The baffle can be adjusted in coordination with the third through hole. Insulation layers are installed on the outer surface of the heat exchanger, the inner and outer sides of the furnace cover, and the outer surface of the smoke inlet pipe. A drain valve is provided at the bottom of the heat exchanger. Horizontally staggered smoke baffles are installed on both sides of the inner wall of the heat exchanger, one end of each smoke baffle is fixed on the inner wall of the heat exchanger, and the other end of the smoke baffle has a gap with the inner wall on the other side of the heat exchanger. An oil fume channel wall is also installed in the heat exchanger, and the oil fume channel wall is vertically fixed on the inner wall at the top of the heat exchanger, leaving a certain distance from the bottom of the heat exchanger, and the oil fume channel wall is located at the rear end of the smoke inlet hole.

[0006] The positive effects of the present invention are as follows: the multifunctional gas stove described in the present invention is mainly composed of a gas fire source, a shell and tube heat exchanger, a sleeve air heat exchanger, two fans, and a plurality of valves, dampers, stove covers, and cover plates. When the stove cover is lifted, it becomes open combustion, which can be used for cooking; when the stove cover is covered, it becomes combustion in the combustion chamber, which can concentrate firepower to heat hot water, and adjust the valve switch and damper direction to heat hot water, cooperate with the radiator for heating, make domestic hot water, and bathe. Adjust the cover plate to purify the range hood to carry out heat exchange of the flue gas and purify the flue gas. Adjust the air duct and damper to adjust the ventilation frequency of the indoor air, forming five major functions, one machine with multiple uses, and low functional cost. The comprehensive utilization thermal efficiency is nearly 100% (most of the high-level energy is absorbed), and the use cost is low (theoretical calculation is lower than urban centralized heating).

[0007] In addition, the patent owner has allowed the use of the innovative structure of the gas heater with patent number ZL201621171157.1, which has high efficiency and energy saving, indoor humidification and phase change heat transfer sleeve heat exchanger. Therefore, this stove has the advantage of extremely high thermal efficiency. It has the advantage of being able to adjust the indoor humidity during winter heating. At the same time, the smoke is discharged outdoors, part of the indoor air is mixed with the outdoor fresh air, and then enters the room after heat exchange with the smoke, and fresh air is supplied to the indoor air, and the number of air heat exchanges can be changed at will, which increases the comfort. The patent owner has allowed the use of the utility model patent with patent number ZL201720683323.4: a hot water supply environmentally friendly energy-saving gas stove, which uses advanced technology to heat the hot water with smoke and reduce the smoke temperature below 40 degrees, so that the oil smoke and water condense, the oil smoke condensation temperature is below 286 degrees, and the water condensation temperature is below 100 degrees, which not only recovers heat but also purifies the smoke, meets environmental protection requirements, and kills two birds with one stone. This stove is particularly suitable for rural areas and military barracks, and is particularly suitable for the coal-to-gas conversion required for environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0009] Figure 2 It is a front view of the present invention;

[0010] Figure 3 yes Figure 2 Left view of

[0011] Figure 4 This is a diagram of the overall heat exchange state of the stove of the present invention when cooking;

[0012] Figure 5 It is a three-dimensional schematic diagram of the burner device (in a buckled state);

[0013] Figure 6 It is a three-dimensional structural schematic diagram of the furnace head device in an open state;

[0014] Figure 7 yes Figure 5 A front view of the middle burner device;

[0015] Figure 8 yes Figure 7 Left view of

[0016] Fig. 9 yes Figure 8 The enlarged view of the AA section view is the structural diagram of the shaft valve;

[0017] Fig.10 yes Figure 2 A partial enlarged view of middle I;

[0018] Fig.11 yes Fig.10 A top view of

[0019] Fig.12 It is a schematic diagram of the waterway of the present invention;

[0020] Fig.13 It is a schematic diagram of the smoke path of the present invention;

[0021] Fig.14 yes Fig.13 A partial enlarged view of middle II, a diagram of the humidity regulation structure;

[0022] Fig.15 yes Fig.14 Cross-section along BB direction.

[0023] In the figure, 1 stove, 2 burner, 3 partition, 4 heat exchanger, 5 main water inlet pipe, 6 circulating water pump, 7 water supply pipe, 8 solenoid valve, 9 fourth water pipe, 10 second water pipe, 11 heating pipe, 12 fifth water pipe, 13 water storage tank, 14 seventh water pipe, 15 water device, 16 sixth water pipe, 17 fourth water valve, 18 burner device, 19 burner cover, 20 fixing seat, 21 valve core, 22 cooling pipe, 23 valve core screw, 24 nut, 25 gasket, 26 first through hole, 27 second through hole, 28 smoke inlet pipe, 29 filter screen, 30 smoke inlet hole, 31 cover plate, 32 smoke outlet pipe, 33 oil smoke fan, 34 smoke heat exchange sleeve, 35 mixing air duct, 36 double inlet fan, 37 old air duct, 38 two-way damper, 39 positioning baffle, 40 handle 41 slide slot 42 card slot 43 drain valve 44 first flue 45 first water pipe 46 third water pipe 47 radiator 48 second flue 49 third through hole 50 heat absorbing pipe 51 third water valve 52 second water valve 53 fifth water valve 54 sixth water valve 55 first water valve 56 stud 57 water seal groove 58 smoke baffle 59 oil fume channel wall 60 sealing gate 61 arc-shaped wind baffle 62 fresh air duct 63 pot 64 oil fume channel 65 left shaft valve 66 tapered hole 67 air door 68 electric control box 69 temperature sensor 70 electronic water level gauge 71 plug-in tube 72 right shaft valve 73 wind cap 74 torsion spring 75 indoor hole 76 water retaining ring 77 baffle 78 rotating handle 79 handle. DETAILED DESCRIPTION

[0024] The multifunctional gas stove of the present invention comprises a gas stove, such as Figure 1 , Figure 2 and Fig.13As shown, it also includes a radiator 47 and a heat exchanger 4. The radiator 47 can be an existing heating device such as a radiator or floor heating, or it can be a shell and tube heat exchanger, in which the shell contains flue gas and the tube contains water for heat exchange. The heat exchanger 4 is composed of a shell and a heat receiving tube 11 installed inside the shell. The water inlet of the radiator 47 is connected to the water outlet of the heat receiving tube 11 through a pipe, and the water outlet of the radiator 47 is connected to the water inlet of the heat receiving tube 11 through a pipe. A circulating water pump 6 is installed on a connecting pipe between the radiator 47 and the heat receiving tube 11, and the circulating water pump 6 can drive water to circulate between the radiator 47 and the heat exchanger 4. As shown Figure 4 As shown, a smoke inlet pipe 28 and a smoke inlet hole 30 are provided on the shell of the heat exchanger 4, the smoke inlet hole 30 is located above the smoke inlet pipe 28, and a cover plate 31 that can be opened and closed is installed on the smoke inlet hole 30. The smoke generated by the gas cooker can enter the heat exchanger 4 through the smoke inlet pipe 28 or the smoke inlet hole 30 as a heat source for heat exchange, and can also cool and purify the smoke. The shell of the heat exchanger 4 is connected to the smoke exhaust system, which can further exchange heat with cold air, wherein the smoke exhaust system can be an existing chimney. The gas cooker includes a stove 1, a burner 2 is installed on the stove 1, and a pot 63 is placed on the burner 2 for normal ignition and cooking. The smoke inlet pipe 28 is located on one side of the burner 2 and is connected to the heat exchanger 4.

[0025] Furthermore, if Fig.12 As shown, the connecting pipe between the water inlet of the radiator 47 and the water outlet of the heat receiving tube 11 is composed of a first water pipe 45 and a second water pipe 10, and a third water valve 51 is installed on the second water pipe 10. The connecting pipe between the water outlet of the radiator 47 and the water inlet of the heat receiving tube 11 is composed of a third water pipe 46 and a main water inlet pipe 5, and a second water valve 52 is installed on the third water pipe 46. One end of the first water pipe 45 and the third water pipe 46 are respectively connected to the water inlet and the water outlet of the radiator 47, and the other end of the first water pipe 45 and the third water pipe 46 are connected to the fourth water pipe 9, and a fifth water valve 53 is installed on the fourth water pipe 9. The water outlet of the heat receiving pipe 11 is connected to the water storage tank 13 through the fifth water pipe 12. The electronic water level meter 70 and the temperature sensor 69 can be installed in the water storage tank 13 to detect the water level and water temperature in the box in real time. The sixth water valve 54 is installed on the fifth water pipe 12. The water storage tank 13 is connected to one end of the sixth water pipe 16. The other end of the sixth water pipe 16 is respectively connected to the fourth water pipe 9, the second water pipe 10 and the first water pipe 45. The first water valve 55 is installed on the sixth water pipe 16. The water storage tank 13 is also connected to the seventh water pipe 14. One end of the seventh water pipe 14 is installed with a water user 15. The water user 15 can be an existing sprinkler head. The main water inlet pipe 5 is installed with a water supply pipe 7, and the water supply pipe 7 is installed with a solenoid valve 8. The seventh water pipe 14 is installed with a fourth water valve 17, and the main water inlet pipe 5 is installed with a circulating water pump 6.

[0026] Furthermore, a heat absorbing tube 50 is connected in series between the heat receiving tube 11 and the circulating water pump 6 . The heat absorbing tube 50 is located at the periphery of the stove head 2 and can be used to absorb the radiant heat leaked from the stove top 1 and the stove cover 19 .

[0027] According to the above structure, the following water circulation purposes can be achieved by controlling the switches of each solenoid valve:

[0028] 1. Making domestic hot water: When the water level meter detects that the water level in the water tank 13 is lower than the set value, water is added to the water tank 13. At this time, the solenoid valve 8 and the sixth water valve 54 are opened, and the first water valve 55, the second water valve 52, the third water valve 51, the fourth water valve 17 and the fifth water valve 53 are closed. The water pumped into the water supply pipe 7 will pass through the main water inlet pipe 5, the heat absorbing pipe 50, the heat receiving pipe 11 and the fifth water pipe 12 in sequence and enter the water tank 13.

[0029] 2. When only the water in the water storage tank 13 is circulated and heated, the first water valve 55, the fifth water valve 53 and the sixth water valve 54 are opened, the second water valve 52, the third water valve 51, the fourth water valve 17 and the solenoid valve 8 are closed, and the circulating water pump 6 is started. The water in the water storage tank 13 will pass through the sixth water pipe 16, the fourth water pipe 9, the main water inlet pipe 5, the heat absorption pipe 50, the heat receiving pipe 11 and the fifth water pipe 12 in sequence, and finally enter the water storage tank 13 to complete a water cycle of heating in the heat receiving pipe 11 and the heat absorption pipe 50.

[0030] 3. When only the hot water in the water tank 13 is needed, the circulating water pump 6 is turned off, the fourth water valve 17 is opened, the first water valve 55, the solenoid valve 8 and the sixth water valve 54 are closed, and the hot water in the water tank 13 flows out through the seventh water pipe 14 and the water user 15 for use.

[0031] 4. Heating: When only circulation heating of the radiator 47 is required, open the second water valve 52 and the third water valve 51, close the first water valve 55, the fourth water valve 17, the fifth water valve 53, the solenoid valve 8 and the sixth water valve 54, start the circulating water pump 6, and the water in the radiator 47 will pass through the third water pipe 46, the main water inlet pipe 5, the heat absorption pipe 50, the heat receiving pipe 11, the second water pipe 10 and the first water pipe 45 in sequence, and finally enter the radiator 47 to complete a water cycle of heating in the heat receiving pipe 11 and the heat absorption pipe 50.

[0032] Furthermore, the two ends of the passage in which the heat receiving tube 11 and the heat absorbing tube 50 are connected in series are connected in parallel to the burner head device 18, that is, the water inlet of the cooling tube 22 in the burner head device 18 is connected to the water inlet of the heat absorbing tube 50 through the left shaft valve 65, and the water outlet of the cooling tube 22 in the burner head device 18 is connected to the water outlet of the heat receiving tube 11 through the right shaft valve 72.

[0033] like Figure 5 and Figure 6As shown, the burner head device 18 includes a burner cover 19 matched with the burner head 2, and the two sides of the rear portion of the burner cover 19 are fixed to the stove top 1 through a left shaft valve 65 and a right shaft valve 72 respectively.

[0034] like Fig. 9 and Figure 6 As shown, the right shaft valve 72 includes a fixed seat 20, and a valve core 21 is installed on the furnace cover 19 to rotate with the fixed seat 20. A cooling pipe 22 is installed inside the furnace cover 19. The setting of the cooling pipe 22 can absorb the heat energy generated by the fireworks and prevent the furnace cover 19 from burning. The two ends of the cooling pipe 22 are respectively connected to the valve core 21 of the left shaft valve 65 and the right shaft valve 72. The furnace cover 19 and the cooling pipe 22 inside can follow the rotation of the valve core 21 to open and close. Fig. 9 As shown, the end of the valve core 21 that matches with the fixed seat 20 is conical, and a conical hole 66 that matches with the conical end of the valve core 21 is provided in the fixed seat 20. The valve core screw 23 is fixedly installed on the conical end of the valve core 21, and the valve core screw 23 passes through the fixed seat 20. The nut 24 is installed on the valve core screw 23. The gasket 25 is installed on the outer periphery of the valve core screw 23 between the nut 24 and the fixed seat 20. Tightening the nut 24 can make the conical end of the valve core 21 axially press-fit with the fixed seat 20, that is, the conical hole 66 in the fixed seat 20 is closely matched with the conical outer surface of the valve core 21, thereby improving the air tightness of the valve core 21 and the fixed seat 20 and preventing water leakage. A first through hole 26 is provided on one side of the fixed seat 20, and a second through hole 27 that is vertically connected to the inner cavity of the valve core 21 is provided on the side of the valve core 21. The first through hole 26 and the second through hole 27 can be correspondingly connected.

[0035] like Figure 4 As shown, an arc-shaped wind shield 61 is installed on the stove 1 around the stove head 2. The arc-shaped wind shield 61 cooperates with the inner wall of the stove cover 19 to prevent smoke from escaping.

[0036] The working principle of the left shaft valve 65 and the right shaft valve 72 is: when the furnace cover 19 covers the furnace head 2, the second through hole 27 is connected with the first through hole 26, and the circulating water can enter the cooling pipe 22 for heating; when the furnace cover 19 is flipped upward and opened, the second through hole 27 is disconnected from the first through hole 26, and the circulating water cannot enter the furnace head device 18. A water cavity is provided in the smoke inlet pipe 28, and the smoke inlet pipe 28 can be an existing water jacket. The water outlet of the smoke inlet pipe 28 is connected to the first through hole 26 of the left shaft valve 65, and the water inlet of the smoke inlet pipe 28 is connected to the water outlet of the circulating water pump 6. The airway of the smoke inlet pipe 28 is connected to the shell of the heat exchanger 4. A sealing gate 60 is installed at the air inlet of the smoke inlet pipe 28. The sealing gate 60 can be the intermediate damper described in the patent document CN201821761494.5, or it can be an existing gate that can be opened and closed automatically or manually, so as to control whether the smoke enters the heat exchanger 4 through the smoke inlet pipe 28.

[0037] When the stove 2 is not in the cooking state, Figure 1 and Figure 5 As shown, the furnace cover 19 completely covers the burner 2. At this time, the second through hole 27 in the valve core 21 is connected to the first through hole 26 in the fixing seat 20. The water pumped in from the main water inlet pipe 5 is divided into two paths, one path enters the heat receiving tube 11, and the other path enters the cooling tube 22 through the smoke inlet pipe 28 and the left shaft valve 65. The heat generated by the burner 2 during the combustion process exchanges heat with the water with a lower temperature in the cooling tube 22, and after heating, enters the fifth water pipe 12 through the right shaft valve 72.

[0038] The structure and working principle of the purifying range hood are as follows: when making hot water, during the combustion process of the burner 2, the smoke exhaust system works to absorb smoke, the stove cover 19 is closed, the sealing gate 60 of the smoke inlet pipe 28 is opened, and the shell of the heat exchanger 4 is under negative pressure. The smoke generated by the combustion of the burner 2 is sucked into the smoke inlet pipe 28 and enters the heat exchanger 4. The smoke passing through the smoke inlet pipe 28 will exchange heat with the water inside it again to further increase the water temperature. The smoke entering the shell of the heat exchanger 4 will exchange heat with the water in the heating pipe 11, and the heated water will be pumped into the water tank 13 through the fifth water pipe 12. During this process, the cover plate 31 closes the smoke inlet hole 30 to prevent the negative pressure in the heat exchanger 4 from increasing and ensure the operation of the smoke.

[0039] When the stove 2 is in the cooking state, Figure 6 As shown, the furnace cover 19 is opened, the second through hole 27 is no longer connected to the first through hole 26 , and the water in the main water inlet pipe 5 will only enter the heating pipe 11 but not the cooling pipe 22 .

[0040] At this time, the smoke exhaust system works by sucking in oil smoke by negative pressure from the heat exchanger 4, and the sealing gate 60 of the smoke inlet pipe 28 is closed to prevent the pressure in the smoke exhaust path from increasing. The shell of the heat exchanger 4 maintains negative pressure, and the cover plate 31 is opened. The smoke and oil smoke generated by the combustion will be sucked into the heat exchanger 4 through the smoke inlet hole 30, and exchange heat with the heat receiving pipe 11. The water after heating and heating will be pumped into the water storage tank 13 through the fifth water pipe 12. After the oil smoke cools down, it condenses into liquid and separates from the smoke, thereby playing a role in purifying the smoke.

[0041] The multifunctional gas stove of the present invention meets the environmental protection requirements of coal-to-gas equipment, and has the functions of cooking, heating, fume extraction, water heating, ventilation and air exchange at the same time. It can perform heat exchange in different ways in cooking and non-cooking situations, and the heat loss is small and the heat exchange efficiency is high. The heated domestic water can be circulated and heated under the drive of the circulating water pump. The flue gas exhaust heat exchange system can not only discharge the flue gas to the outside, but also mix the indoor gas with fresh air through the double-inlet fan and perform heat exchange with the flue gas. The damper can also control the proportion of fresh air gas entering the room to ensure the indoor temperature and fresh air coefficient, and also ensure the amount of heat exchange gas. The overall equipment has low cost, is easy to use, and occupies a small area. It solves the common shortcomings of existing coal-to-gas equipment and is conducive to the promotion and use of large areas across the country. The present application uses a heat source, an airway, a waterway, a water pump, and two fans. Through the change of the damper gate valve and the stove cover, five functions can be achieved. The five functions are: 1 cooking, 2 range hood, 3 heating, 4 domestic hot water, and 5 indoor air conditioning.

[0042] Preferably, two burners 2 are installed side by side on the stove 1, or multiple burners 2 can be installed. A vertical partition 3 is installed between the two burners 2, which creates negative pressure on three sides and makes the smoke column approach the heat exchanger 4 head-on. Each burner 2 is correspondingly installed with a burner device 18, that is, two groups of burner devices 18 are connected in parallel at both ends of the series passage of the heat absorbing tube 50 and the heat receiving tube 11. When the two groups of burners 2 are in a non-cooking state, the two groups of burner devices 18 can increase the power of the device, and the two groups of burner devices 18 are connected in parallel, and the use states between them will not affect each other. When one burner is used, the cover of the other burner, the sealing gate 60 and the cover plate 31 are closed.

[0043] Preferably, in order to facilitate adjusting the opening and closing state of the cover plate 31 to adapt to different heat exchange modes, such as Figure 4As shown, a positioning baffle 39 that can slide along the cover plate 31 is installed in cooperation with the cover plate 31, and a handle 40 is installed on the positioning baffle 39. A slide groove 41 that matches the handle 40 is opened on the cover plate 31, and the slide groove 41 is arranged along the length direction of the cover plate 31. Slots 42 that match the positioning baffle 39 are opened at both sides of the partition 3. The slots 42 are inclined. When the positioning baffle 39 is located in the slots 42, the cover plate 31 can be tilted to the upper position of the burner head 2, allowing the smoke to enter the heat exchanger 4 through the smoke inlet hole 30. When the smoke inlet hole 30 needs to be closed, it is only necessary to pull the handle 40 to separate the positioning baffle 39 from the slot 42. The cover plate 31 falls back under the action of gravity and the torsion spring 74 to close the smoke inlet hole 30. The overall operation is simple, and the opening and closing states of the smoke inlet hole 30 can be quickly switched. A torsion spring 74 can be installed on the rotating shaft of the cover plate 31, and the torsion spring 74 always has the tendency to make the cover plate 31 close the smoke inlet hole 30. A sealing strip is also installed at the position where the cover plate 31 cooperates with the smoke inlet hole 30 to further ensure the sealing of the entire heat exchanger 4 when the cover plate 31 is in a closed state, thereby slowing down the dissipation of heat.

[0044] Preferably, Fig.10 and Fig.11 As shown, the smoke exhaust system is a smoke exhaust heat exchange system, which includes a smoke exhaust pipe 32 connected to the shell of the heat exchanger 4, a fume fan 33 is installed at one end of the smoke exhaust pipe 32, and a wind cap 73 is installed on the top of the fume fan 33 to prevent backdraft. A smoke heat exchange sleeve 34 is installed on the outer periphery of the smoke exhaust pipe 32, and a through hole is provided at the bottom of the smoke heat exchange sleeve 34 and communicated with the indoor room. The smoke heat exchange sleeve 34 is connected to the air outlet of the double inlet fan 36 through a mixing air duct 35. A fresh air duct 62 is installed at one air inlet of the double inlet fan 36, and the fresh air duct 62 is communicated with the outdoor atmosphere. A filter 29 is installed in the fresh air duct 62, and the other air inlet is communicated with the indoor environment through the old air duct 37, so that the ventilation volume is increased and the indoor air flows, thereby increasing the indoor humidity uniformity and comfort. A two-way damper 38 that can be opened and closed is also installed on the mixing air duct 35. The fresh air duct and the old air duct 37 that connect the double inlet fan 36 to the outdoor atmosphere are both equipped with dampers 67. The dampers 67 can be a rotary rod and a circular plate installed on the rotary rod, wherein the circular plate is located inside the duct and cooperates with it. Rotating the rotary rod can drive the circular plate to rotate to adjust the flow rate of gas passing through the duct. Fig.11 As shown, the two-way damper 38 can close the mixing air duct 35 and open the indoor hole 75, so that the mixing air duct 35 is no longer connected to the flue gas heat exchange sleeve 34, and the fresh air exhausted by the double inlet fan 36 will directly enter the room without heating, and is used in the non-heating period.

[0045] The oil fume fan 33 and the double inlet fan 36 are both located outdoors, and the flue gas heat exchange sleeve 34 and the two-way damper 38 are both located indoors. The function of the oil fume fan 33 on the smoke outlet duct 32 is to discharge the smoke generated by combustion outdoors, and the function of the double inlet fan 36 is to introduce fresh air and indoor air into the room. When the weather is cold, the indoor air volume increases and the fresh air decreases. Since there is still a certain amount of residual heat in the smoke entering the smoke outlet duct 32, in order to increase the indoor temperature, the two-way damper 38 rotates to the outside of the mixing duct 35, closing the indoor hole 75. The mixed air blown into the mixing duct 35 by the double inlet fan 36 will enter the smoke heat exchange sleeve 34 and exchange heat with the smoke outlet duct 32, and then enter the room after heating. When the temperature is high in summer, the two-way damper 38 rotates to Fig.11 At the dotted line position shown in the figure, most of the air blown into the mixing duct 35 by the double-inlet fan 36 will directly enter the room through the gap at the two-way damper 38 without generating heat exchange and entering the room without rising in temperature. In this way, the indoor temperature will not rise while ventilation is being carried out.

[0046] Preferably, the flue gas exhaust heat exchange system is provided with a water-sealed humidifying device, the structure of the water-sealed humidifying device is as follows: Fig.13 and Fig.14 As shown, the smoke outlet pipe 32 in the smoke heat exchange sleeve 34 includes a first smoke duct 44 and a second smoke duct 48 plugged into each other, the top of the first smoke duct 44 extends into the second smoke duct 48, the top of the first smoke duct 44 extending into the second smoke duct 48 has a water retaining ring 76, and a water seal groove 57 is provided between the first smoke duct 44 and the second smoke duct 48. Fig.15 As shown. A third through hole 49 is provided at the lower part of the position where the second flue 48 and the first flue 44 are fitted. A threaded hole is provided on the flue gas heat exchange sleeve 34 corresponding to the position of the third through hole 49. A regulating valve is installed in the threaded hole. The regulating valve includes a stud 56 and a baffle 77. The stud 56 cooperates with the threaded hole. A baffle 77 is installed at one end of the stud 56 extending into the flue gas heat exchange sleeve 34. The baffle 77 can be adjusted in coordination with the third through hole 49. The above device can adjust the water volume. The specific scheme for the mutual plugging of the first flue 44 and the second flue 48 is that the plugging part of the first flue 44 is a plug-in tube 71, as shown in FIG. Fig.15 As shown, the plug-in tube 71 matches the inner diameter of the second flue 48, and the outer wall of the plug-in tube 71 is axially recessed inward to form a water seal groove 57, which is connected to the third through hole 49. Condensed water can enter the flue gas heat exchange sleeve 34 through the water seal groove, absorb heat and evaporate to moisten the air entering the room. Fig.15 As shown, two water seal grooves 57 are formed on the plug-in pipe 71 , and the second flue 48 is provided with two third through holes 49 which are respectively connected with the water seal grooves 57 .

[0047] The working principle of the water seal humidification device is as follows Fig.13As shown, the flue gas exchanges heat with the air in the smoke outlet pipe 32, and condensed water is generated on the inner wall of the second flue 48. The condensed water is collected in the water seal groove 57 and can enter the air side of the flue gas heat exchange sleeve 34 through the third through hole 49 to humidify the air. The condensed water at the bottom of the second flue 48 can form a liquid seal at the position of the third through hole 49 to prevent air from entering the flue gas side and avoid pressure changes in the sleeve. A rotating handle 78 can be installed on the stud 56 installed on the flue gas heat exchange sleeve 34. Turning the handle can make the baffle 77 adjust the water inlet of the third through hole 49, so as to open and close the third through hole 49 as required to change the humidity of the air entering the room.

[0048] Preferably, a thermal insulation layer is installed on the outer surface of the heat exchanger 4, the inner and outer side surfaces of the furnace cover 19, and the outer surface of the smoke inlet pipe 28, which can reduce heat loss and ensure heat exchange efficiency.

[0049] Preferably, Figure 1 As shown, a drain valve 43 is provided at the bottom of the heat exchanger 4. Since oil smoke enters the heat exchanger 4 for heat exchange, impurities such as oily liquid, condensed grease, etc. will inevitably be deposited after long-term use. The drain valve 43 can be opened to clear the impurities inside the heat exchanger 4 to prevent blockage that affects the heat exchange efficiency of the entire device.

[0050] Preferably, Fig.13 As shown, horizontally staggered smoke baffles 58 are installed on both sides of the inner wall of the heat exchanger 4. One end of each smoke baffle 58 is fixed on the inner wall of the heat exchanger 4, and the other end of the smoke baffle 58 has a gap with the inner wall of the other side of the heat exchanger 4. The arrangement of the smoke baffle 58 can make the smoke entering the heat exchanger 4 rise in an S shape, lengthen the travel of the smoke in the heat exchanger 4, and improve the heat exchange efficiency with the heat receiving pipe 11. An oil fume channel wall 59 is also installed in the heat exchanger 4. The oil fume channel wall 59 is vertically fixed on the inner wall of the heat exchanger 4, leaving a certain distance from the bottom of the heat exchanger 4. An oil fume channel 64 is formed between the oil fume channel wall 59 and the heat exchanger 4. The oil fume channel wall 59 is located at the rear lower end of the smoke inlet hole 30. The setting of the oil fume channel 64 can ensure that when cooking, the smoke entering the heat exchanger 4 through the smoke inlet hole 30 first drops to the bottom of the heat exchanger 4 through the oil fume channel 64 and mixes with the smoke, and then discharges the heat exchanger 4 from bottom to top in the form of liquid oil and air, and then is discharged from the heat exchanger 4 into the smoke outlet pipe 32 together with the smoke.

[0051] The multifunctional gas stove of the present invention is equipped with a thermostat, and the water tank 13 is equipped with a temperature sensor 69 and an electronic water level gauge 70. The thermostat, the temperature sensor 69 and the electronic water level gauge 70 are all connected to the control circuit board in the electric control box 68 via wires. The electric control box 68 is connected to the oil fume fan 33, the double inlet fan 36, the water pump, and the gas solenoid valve igniter through control lines. By setting the designated room temperature, water temperature and water level in the water tank 13 on the electric control box 68, the start and stop of the oil fume fan 33 and the double inlet fan 36 can be automatically controlled, and the opening and closing of the two-way damper 38 can be used to adjust the room temperature, the automatic opening degree of the gas solenoid valve and the start and stop of the water pump can be controlled to adjust the temperature of the circulating water, and the opening and closing of the solenoid valve on the water supply main can be controlled to automatically add water to the water tank 13. Optimization: When all water valves are changed to solenoid valves and the two-way damper 38 is controlled by a motor, the circuit in the electric control box 68 is a microcomputer circuit. There can be programs such as cooking, heating water, and changing air to control the actions of water valves, air valves, motor two-way air valves, fans, and igniters.

[0052] The functional examples of the present invention are as follows:

[0053] 1. When cooking: When the stove 2 lifts the stove cover 19 to perform open combustion and the flame heats the pot 63 to cook, Figure 6 As shown, the furnace cover 19 is opened, the second through hole 27 is no longer connected to the first through hole 26, and the water in the main water inlet pipe 5 will only enter the heat receiving pipe 11 and will not enter the cooling pipe 22. At this time, the smoke exhaust system works to suck the oil smoke, and the sealing gate 60 between the smoke inlet pipe 28 and the furnace cover 19 is closed to prevent the pressure in the smoke exhaust path from increasing. The shell of the heat exchanger 4 maintains a negative pressure, and the cover plate 31 is opened. The smoke and oil smoke generated by the combustion will be sucked into the heat exchanger 4 through the smoke inlet hole 30 and exchange heat with the heat receiving pipe 11. The water after heating and heating will be pumped into the water storage tank 13 through the fifth water pipe 12.

[0054] 2. When heating is carried out: when the furnace cover 19 is lowered, combustion is carried out in the combustion chamber, the flame and smoke all enter the heat exchanger 4 through the smoke inlet pipe 28 to heat the heat receiving tube 11. When only the radiator 47 needs to be circulated and heated, the second water valve 52 and the third water valve 51 are opened, the first water valve 55, the fourth water valve 17, the fifth water valve 53, the solenoid valve 8 and the sixth water valve 54 are closed, and the circulating water pump 6 is started. The water in the radiator 47 will pass through the third water pipe 46, the main water inlet pipe 5, the heat absorption pipe 50, the heat receiving tube 11, the second water pipe 10 and the first water pipe 45 in sequence, and finally enter the radiator 47 to complete a water cycle of heating in the heat receiving tube 11.

[0055] 3. When making domestic hot water: the stove head 2 is in the water heating state, and only the water in the water tank 13 is circulated and heated. At this time, the first water valve 55, the fifth water valve 53 and the sixth water valve 54 are opened, and the second water valve 52, the third water valve 51, the fourth water valve 17 and the solenoid valve 8 are closed, and the circulating water pump 6 is started. The water in the water tank 13 will pass through the sixth water pipe 16, the fourth water pipe 9, the main water inlet pipe 5, the heat absorption pipe 50, the heat receiving pipe 11 and the fifth water pipe 12 in sequence, and finally enter the water tank 13 to complete a water cycle heated in the heat receiving pipe 11. When the water level meter detects that the water level in the water tank 13 is lower than the set value, water is added to the water tank 13. At this time, the solenoid valve 8 and the sixth water valve 54 are opened, and the first water valve 55, the second water valve 52, the third water valve 51, the fourth water valve 17 and the fifth water valve 53 are closed. The water pumped into the water supply pipe 7 will pass through the main water inlet pipe 5, the heat absorption pipe 50, the heat receiving pipe 11 and the fifth water pipe 12 in sequence and enter the water tank 13.

[0056] 4. Purification process of the range hood: When the stove 2 is in the cooking state, the flame smoke heats the pot 63 and the heat is still very large. At this time, the smoke exhaust system works to absorb the smoke, the sealing gate 60 of the smoke inlet pipe 28 is closed, the negative pressure is maintained in the shell of the heat exchanger 4, the cover plate 31 is opened, and the smoke generated by the combustion is sucked into the heat exchanger 4 through the smoke inlet hole 30, and heat is exchanged with the heat receiving pipe 11, the oil and gas are separated, and the water after heating and heating will be injected into the water storage tank 13 through the fifth water pipe 12. The gas enters the smoke outlet pipe 32 for heat exchange and is discharged into the atmosphere, and the dirty oil sinks to the bottom of the heat exchanger 4.

[0057] 5. To ensure fresh indoor air, adjust air ventilation: the smoke exhaust heat exchange system includes a smoke outlet pipe 32 connected to the shell of the heat exchanger 4, and a fume fan 33 is installed at one end of the smoke outlet pipe 32. A smoke heat exchange sleeve 34 is installed on the outer periphery of the smoke outlet pipe 32. A through hole is provided at the bottom of the smoke heat exchange sleeve 34 and communicates with the indoor room. The smoke heat exchange sleeve 34 is connected to the air outlet of the double inlet fan 36 through the mixing air duct 35. A fresh air duct 62 is installed at one air inlet of the double inlet fan 36, and the fresh air duct 62 is communicated with the outdoor atmosphere. The other air inlet is communicated with the indoor environment through the old air duct 37. A two-way damper 38 that can be opened and closed is also installed on the mixing air duct 35. The fresh air duct and the old air duct 37 that connect the double inlet fan 36 to the outdoor atmosphere are both equipped with dampers 67. The dampers 67 can be a rotary rod and a circular plate installed on the rotary rod, wherein the circular plate is located inside the duct and cooperates with it. Rotating the rotary rod can drive the circular plate to rotate to adjust the flow rate of gas passing through the duct. Fig.11 As shown, the two-way damper 38 can be rotated and closed toward the inside of the mixing air duct 35 when the temperature is high, so that the mixing air duct 35 is no longer connected to the flue gas heat exchange sleeve 34, and the hole 75 leading to the room is opened, and the fresh air discharged through the double inlet fan 36 will directly enter the room without being heated.

[0058] The oil fume fan 33 and the double inlet fan 36 are both located outdoors, and the flue gas heat exchange sleeve 34 and the two-way damper 38 are both located indoors. The function of the oil fume fan 33 on the smoke outlet duct 32 is to purify the smoke generated by combustion and discharge it outdoors, while creating negative pressure for the heat exchanger 4. The function of the double inlet fan 36 is to inhale indoor air and introduce fresh air, and send it to the air side of the smoke heat exchange sleeve 34 for heat exchange to create positive pressure. When the weather is cold, since there is still a certain amount of residual heat in the smoke entering the smoke outlet duct 32, in order to increase the indoor temperature, the two-way damper 38 rotates to the outside of the mixing duct 35 to block the indoor passage. The air sent into the mixing duct 35 by the double inlet fan 36 will enter the air side of the smoke heat exchange sleeve 34 to exchange heat with the smoke outlet duct 32, and then enter the room after heating. When the temperature is high in summer, the two-way damper 38 rotates to Fig.11 At the dotted line position shown in the figure, the air discharged into the mixing air duct 35 by the double inlet fan 36 directly enters the room through the indoor hole 75 opened by the two-way damper 38, and directly enters the room without heat exchange, so that the indoor temperature will not rise while ventilation is performed. The effects of inhaling indoor air are: 1. reheating, 2. increasing the amount of heat exchange gas and the heat exchange effect, 3. indoor air flows and the room temperature is uniform.

[0059] 6. Preferably, the structure of the water-sealed humidifying device is as follows: Fig.13 and Fig.14 As shown, the smoke outlet pipe 32 in the flue gas heat exchange sleeve 34 includes a first flue 44 and a second flue 48 that are plugged into each other. The top of the first flue 44 extends into the second flue 48. The top of the first flue 44 that extends into the second flue 48 has a water retaining ring 76. A water seal groove 57 is formed between the first flue 44 and the second flue 48. A third through hole 49 is provided at the position where the second flue 48 and the first flue 44 are fitted. The third through hole 49 is located at the bottom of the water seal groove 57 and corresponds to the position of the third through hole 49. A threaded hole is provided on the flue gas heat exchange sleeve 34. A regulating valve is installed in the threaded hole. The regulating valve includes a stud 56 and a baffle 77. A baffle 77 is installed at one end of the stud 56 that extends into the flue gas heat exchange sleeve 34. The baffle 77 can be adjusted in coordination with the third through hole 49. The specific solution for the mutual plugging of the first flue 44 and the second flue 48 is that the plug-in portion of the first flue 44 is a plug-in tube 71, as shown in FIG. Fig.15 As shown, the plug-in tube 71 matches the inner diameter of the second flue 48, and the outer wall of the plug-in tube 71 is axially recessed inward to form a water seal groove 57, which is connected to the third through hole 49. Condensed water can enter the air side of the flue gas heat exchange sleeve 34 through the channel, absorb heat and evaporate to moisten the air entering the room. Fig.15 As shown, two water seal grooves 57 are formed on the plug-in pipe 71 , and the second flue 48 is provided with two third through holes 49 which are respectively connected with the water seal grooves 57 .

[0060] The working principle of the water seal humidification device is as follows Fig.13 As shown, the flue gas exchanges heat with the air during the rising process of the smoke outlet pipe 32, and condensed water is generated on the inner wall of the second flue 48. The condensed water is collected in the water seal groove 57, and can enter the flue gas heat exchange sleeve 34 through the third through hole 49 to be heated into water vapor to humidify the air. The condensed water at the bottom of the second flue 48 forms a liquid seal in the water seal groove 57 to prevent air from entering the flue gas heat exchange sleeve 34 and maintain the negative pressure of the flue gas. A rotating handle 78 can be installed on the stud 56 installed on the flue gas heat exchange sleeve 34. Turning the handle can make the baffle 77 adjust the water inlet of the third through hole 49, so as to open and close the third through hole 49 as required to change the humidity of the air entering the room. The pressure generated by the height of the water level in the water seal groove 57 is greater than the pressure difference between the air side and the smoke side, which prevents the air on the air side with a relatively high pressure from entering the smoke and destroying the negative pressure of the smoke.

[0061] The technical solution of the present invention is not limited to the scope of the embodiments described in the present invention. The technical contents not described in detail in the present invention are all well-known technologies.

Claims

1. A multifunctional gas stove, comprising a gas cooker, the gas cooker comprising a stovetop (1), a burner (2) being mounted on the stovetop (1), characterized in that: The heat exchanger (4) further comprises a radiator (47) and a heat exchanger (4), wherein the heat exchanger (4) comprises a shell and a heat receiving pipe (11) installed inside the shell, wherein a water inlet of the radiator (47) is connected to a water outlet of the heat receiving pipe (11) via a pipe, and a water outlet of the radiator (47) is connected to a water inlet of the heat receiving pipe (11) via a pipe, and a circulating water pump (6) is installed on a connecting pipe between the radiator (47) and the heat receiving pipe (11), and a smoke inlet pipe (28) and a smoke inlet hole (30) are provided on the shell of the heat exchanger (4), wherein the smoke inlet hole (30) is located above the smoke inlet pipe (28), and an openable and closable cover plate (31) is installed on the smoke inlet hole (30), and the shell of the heat exchanger (4) is connected to a smoke exhaust system; the smoke inlet pipe (28) is located at the top of the burner head (2); one side; a heat absorbing tube (50) is connected in series between the heat receiving tube (11) and the circulating water pump (6), and the heat absorbing tube (50) is located on the periphery of the burner head (2); a burner head device (18) is connected in parallel at both ends of the passage in which the heat receiving tube (11) and the heat absorbing tube (50) are connected in series, and the burner head device (18) comprises a burner cover (19) matched with the burner head (2), and the two sides of the rear part of the burner cover (19) are connected to the stove (1) through a left shaft valve (65) and a right shaft valve (72), respectively, wherein the left shaft valve (65) and the right shaft valve (72) have the same structure, and both the left shaft valve (65) and the right shaft valve (72) comprise a fixed seat (20), and a valve core (21) rotatably matched with the fixed seat (20) is installed on the burner cover (19), and a valve core (21) is installed inside the burner cover (19). A cooling pipe (22), the two ends of the cooling pipe (22) are respectively connected to the valve cores (21) of the left shaft valve (65) and the right shaft valve (72), one end of the valve core (21) matching with the fixed seat (20) is conical, a valve core screw (23) is fixedly installed on the conical end of the valve core (21), the valve core screw (23) passes through the fixed seat (20), a nut (24) is matched and installed on the valve core screw (23), and tightening the nut (24) can make the conical end of the valve core (21) axially press-fit with the fixed seat (20), thereby improving the air tightness of the valve core (21) and the fixed seat (20), a first through hole (26) is opened on one side of the fixed seat (20), and a second through hole connected with its inner cavity is opened on the side of the valve core (21) (27), the first through hole (26) and the second through hole (27) can be correspondingly connected; when the furnace cover (19) is covered on the furnace head (2), the second through hole (27) is connected to the first through hole (26), and when the furnace cover (19) is turned upward and opened, the second through hole (27) and the first through hole (26) are disconnected; a water cavity is provided in the smoke inlet pipe (28), the water outlet of the smoke inlet pipe (28) is connected to the first through hole (26) of the left shaft valve (65), the water inlet of the smoke inlet pipe (28) is connected to the water outlet of the circulating water pump (6), the airway of the smoke inlet pipe (28) is connected to the shell of the heat exchanger (4), and a sealing gate (60) is installed at the air inlet of the smoke inlet pipe (28); a sewage valve (43) is provided at the bottom of the heat exchanger (4).

2. A multifunctional gas stove according to claim 1, characterized in that: The connecting pipe between the water inlet of the radiator (47) and the water outlet of the heat receiving pipe (11) is composed of a first water pipe (45) and a second water pipe (10), and a third water valve (51) is installed on the second water pipe (10). The connecting pipe between the water outlet of the radiator (47) and the water inlet of the heat receiving pipe (11) is composed of a third water pipe (46) and a main water inlet pipe (5), and a second water valve (52) is installed on the third water pipe (46). One end of the first water pipe (45) and the third water pipe (46) are respectively connected to the water inlet and the water outlet of the radiator (47), and the other end of the first water pipe (45) and the third water pipe (46) are respectively connected to the two ends of the fourth water pipe (9), and a fifth water valve (53) is installed on the fourth water pipe (9). The heat receiving pipe (11) The water outlet is connected to the water storage tank (13) through a fifth water pipe (12); a sixth water valve (54) is installed on the fifth water pipe (12); the water storage tank (13) is connected to one end of the sixth water pipe (16); the other end of the sixth water pipe (16) is respectively connected to the fourth water pipe (9), the second water pipe (10) and the first water pipe (45); the sixth water pipe (16) is installed with a first water valve (55); the water storage tank (13) is also connected to a seventh water pipe (14); a water user (15) is installed at one end of the seventh water pipe (14); a water supply pipe (7) is installed on the main water inlet pipe (5); a solenoid valve (8) is installed on the water supply pipe (7); a fourth water valve (17) is installed on the seventh water pipe (14); and a circulating water pump (6) is installed on the main water inlet pipe (5).

3. A multifunctional gas stove according to claim 1, characterized in that: Two burners (2) are installed side by side on the stove (1), a vertical partition (3) is installed between the two burners (2), and each burner (2) is correspondingly installed with a burner device (18).

4. A multifunctional gas stove according to claim 1, characterized in that: The smoke exhaust system is a smoke exhaust heat exchange system, comprising a smoke exhaust pipe (32) connected to a shell of a heat exchanger (4), a fume fan (33) being installed at one end of the smoke exhaust pipe (32), a smoke heat exchange sleeve (34) being installed on the outer periphery of the smoke exhaust pipe (32), the smoke heat exchange sleeve (34) being connected to the room, the smoke heat exchange sleeve (34) being connected to the air outlet of a double-inlet fan (36) through a mixing air duct (35), one air inlet of the double-inlet fan (36) being connected to the outdoor atmosphere, and the other air inlet being connected to the indoor environment through an old air duct (37), and an openable and closable two-way damper (38) being installed on the mixing air duct (35).

5. A multifunctional gas stove according to claim 4, characterized in that: The smoke outlet pipe (32) in the flue gas heat exchange sleeve (34) comprises a first flue (44) and a second flue (48) which are plugged into each other. The top of the first flue (44) extends into the second flue (48). The outer diameter of the first flue (44) extending into the second flue (48) is smaller than the inner diameter of the second flue (48). A water seal groove (57) is formed between the first flue (44) and the second flue (48). A third through hole (49) is provided at a position where the second flue (48) and the first flue (44) are fitted together. A threaded hole is provided on the flue gas heat exchange sleeve (34) corresponding to the position of the third through hole (49). A regulating valve is installed in the threaded hole. The regulating valve comprises a stud (56) and a baffle (77). The baffle (77) is installed at one end of the stud (56) extending into the flue gas heat exchange sleeve (34). The baffle (77) can be adjusted in cooperation with the third through hole (49).

6. A multifunctional gas stove according to claim 1, characterized in that: A thermal insulation layer is installed on the outer surface of the heat exchanger (4), the inner side and outer side of the furnace cover (19), and the outer surface of the smoke inlet pipe (28).

7. The multifunctional gas stove according to claim 1, characterized in that: Smoke baffles (58) are installed on both sides of the inner wall of the heat exchanger (4) in a horizontally staggered manner. One end of each smoke baffle (58) is fixed to the inner wall of the heat exchanger (4), and the other end of each smoke baffle (58) is spaced from the inner wall of the other side of the heat exchanger (4). An oil smoke channel wall (59) is also installed in the heat exchanger (4). The oil smoke channel wall (59) is vertically fixed to the inner wall at the top of the heat exchanger (4) and has a certain distance from the bottom of the heat exchanger (4). The oil smoke channel wall (59) is located at the rear end of the smoke inlet hole (30).

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