CN110986098A

CN110986098A - Gas multifunctional stove

Info

Publication number: CN110986098A
Application number: CN201911142814.8A
Authority: CN
Inventors: 邢金良; 邢军; 邢斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-20
Filing date: 2019-11-20
Publication date: 2020-04-10

Abstract

The multifunctional gas stove comprises a gas stove, wherein the gas stove comprises a cooking bench, a burner is arranged on the cooking bench, the multifunctional gas stove also comprises a radiator and a heat exchanger, the heat exchanger consists of a shell and a heated pipe arranged in the shell, a water inlet of the radiator is communicated with a water outlet of the heated pipe through a pipeline, a water outlet of the radiator is communicated with a water inlet of the heated pipe through a pipeline, a circulating water pump is arranged on a communicating pipeline between the radiator and the heated pipe, a smoke inlet pipe and a smoke inlet hole are arranged on a shell of the heat exchanger, the smoke inlet hole is positioned above the smoke inlet pipe, an openable cover plate is arranged on the smoke inlet hole, and the shell of the heat exchanger is connected with a; the smoke inlet pipe is positioned at one side of the furnace end. The invention has the positive effects that: the air duct and the air door are adjusted, the air exchange times of indoor air can be adjusted, five functions are formed, one machine has multiple functions, and the function cost is low. The comprehensive utilization heat efficiency is nearly 100 percent (most of high-level energy is absorbed), and the use cost is low (the theoretical calculation is lower than that of urban central heating).

Description

Gas multifunctional stove

Technical Field

The invention relates to the technical field of multifunctional gas machines, in particular to a multifunctional gas stove.

Background

Along with the continuous development of social economy, increasingly serious environmental pollution becomes a big problem in human life at present, and in vast rural areas in China, because of no central heating, the heating form mostly depends on the combustion of coal and firewood, further aggravates the environmental pollution, causes serious haze phenomenon, solves the problem that coal is generally used for changing gas to electricity, but the existing coal is generally used for changing gas to have the defects of single function, low efficiency, higher use cost and manufacturing cost, large occupied area and the like.

Disclosure of Invention

In order to solve the above problems, the present invention provides a gas-fired multifunctional stove, which satisfies the requirement of changing coal into gas, has multiple functions of cooking, heating, purifying a range hood, supplying water for domestic hot water, ventilating, and the like, has the advantages of low cost, convenient use, small floor area, energy saving, environmental protection, comfort, low use cost and low manufacturing cost, and is particularly suitable for rural areas and military barracks.

The technical scheme adopted by the invention for solving the technical problems is as follows: a gas multifunctional stove comprises a gas stove body, wherein the gas stove body comprises a cooking bench, a burner is arranged on the cooking bench, the gas multifunctional stove also comprises a radiator and a heat exchanger, the heat exchanger is composed of a shell and a heated pipe arranged in the shell, a water inlet of the radiator is communicated with a water outlet of the heated pipe through a pipeline, a water outlet of the radiator is communicated with a water inlet of the heated pipe through a pipeline, a circulating water pump is arranged on a communication pipeline between the radiator and the heated pipe, a smoke inlet pipe and a smoke inlet hole are arranged on the shell of the heat exchanger, the smoke inlet hole is positioned above the smoke inlet pipe, an openable cover plate is arranged on the smoke inlet hole, and the shell of the heat exchanger is connected with; the smoke inlet pipe is positioned at one side of the furnace end.

The communication pipeline 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 communication pipeline 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 ends of the first water pipe and the third water pipe are respectively connected with 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 with two ends of a fourth water pipe, a fifth water valve is installed on the fourth water pipe, the water outlet of the heated pipe is communicated with the water storage tank through the fifth water pipe, a sixth water valve is installed on the fifth water pipe, the water storage tank is communicated with one end of the sixth water pipe, the other end of the sixth water pipe is respectively communicated with the fourth water pipe, the second water pipe and the first water pipe, a first water valve is installed on the sixth water pipe, and the water storage tank is, and a water consuming device is arranged at one end of the seventh water pipe, a water supply pipe is arranged on the main water inlet pipe, an electromagnetic valve is arranged on the water supply pipe, a fourth water valve is arranged on the seventh water pipe, and a circulating water pump is arranged on the main water inlet pipe. And a heat absorption pipe is connected between the heated pipe and the circulating water pump in series and is positioned on the periphery of the furnace end. The furnace end device comprises a furnace cover matched with the furnace end, two sides of the rear part of the furnace cover are respectively connected with a cooking bench through a left shaft valve and a right shaft valve, the left shaft valve and the right shaft valve have the same structure, the left shaft valve and the right shaft valve both comprise a fixed seat, a valve core which is rotatably matched with the fixed seat is arranged on the furnace cover, a cooling pipe is arranged inside the furnace cover, two ends of the cooling pipe are respectively communicated with valve cores of the left shaft valve and the right shaft valve, one end of the valve core, which is matched with the fixed seat, is conical, a valve core screw rod is fixedly arranged at one conical end of the valve core, the valve core screw rod penetrates out of the fixed seat, a nut is arranged on the valve core screw rod in a matching manner, the conical end part of the valve core can be axially and tightly matched with the fixed seat by screwing the nut, the airtightness of the valve core and the fixed seat are improved, a first through hole is formed in one, the first through hole and the second through hole can be correspondingly communicated; when the furnace cover is arranged on the furnace end, the second through hole is communicated with the first through hole, and when the furnace cover is turned upwards and opened, the second through hole is disconnected with the first through hole; the water cavity is arranged in the smoke inlet pipe, the water outlet of the smoke inlet pipe is communicated with the first through hole of the left shaft valve, the water inlet of the smoke inlet pipe is communicated with the water outlet of the circulating water pump, the air passage of the smoke inlet pipe is communicated with the shell of the heat exchanger, and the air inlet of the smoke inlet pipe is provided with the sealing gate. Two furnace ends are arranged on the cooking bench side by side, a vertically arranged partition plate is arranged between the two furnace ends, and a furnace end device is correspondingly arranged on each furnace end. The smoke exhaust system is a smoke exhaust heat exchange system, the smoke exhaust heat exchange system comprises a smoke outlet pipeline connected with a heat exchanger shell, an oil smoke fan is installed at one end of the smoke outlet pipeline, a smoke heat exchange sleeve is installed on the periphery of the smoke outlet pipeline and communicated with the indoor space, the smoke heat exchange sleeve is communicated with an air outlet of the double-inlet fan through a mixed air channel, one air inlet of the double-inlet fan is communicated with the outdoor atmosphere, the other air inlet of the double-inlet fan is communicated with the indoor environment through an old air pipeline, and a bidirectional air door capable of being opened and closed is further installed on the mixed air channel. The cigarette pipeline of going out in the flue gas heat transfer sleeve is including the first flue and the second flue of pegging graft each other, and the top of first flue stretches into in the second flue, stretch into the first flue external diameter in the second flue and be less than the internal diameter of second flue, form the water seal groove between first flue and second flue, seted up the third through-hole in the position department of second flue and first flue suit, corresponding to the position of third through-hole, set up the screw hole on the flue gas heat transfer sleeve, the threaded hole cooperation installation governing valve, the governing valve includes double-screw bolt and baffle, the baffle is installed to the telescopic one end of double-screw bolt stretching into flue gas heat transfer, the baffle can coordinate the adjustment with the third through-hole. And heat insulation layers are respectively arranged on the outer surface of the heat exchanger, the inner side surface and the outer side surface of the furnace cover and the outer surface of the smoke inlet pipe. And a blow-down valve is arranged at the bottom of the heat exchanger. The heat exchanger is characterized in that smoke blocking plates horizontally and alternately arranged are installed on two sides of the inner wall of the heat exchanger, one end of each smoke blocking plate is fixed on the inner wall of the heat exchanger, a gap exists between the other end of each smoke blocking plate and the inner wall of the other side of the heat exchanger, an oil smoke channel wall is further installed in the heat exchanger, the oil smoke channel wall is vertically fixed on the inner wall of the top of the heat exchanger and is spaced from the bottom of the heat exchanger, and the oil smoke channel wall is located at the rear end.

The invention has the positive effects that: the invention relates to a multifunctional gas stove, which comprises: the device is mainly composed of a gas fire source, a shell-and-tube heat exchanger, a double-pipe air heat exchanger and two fans, and is matched with a plurality of valves, air doors, a furnace cover and a cover plate. The furnace cover is lifted to be open-type combustion, so that cooking can be performed; the cover is covered to form a combustion chamber, the furnace can be burnt, the hot water can be heated by concentrating fire power, the valve switch and the air door direction can be adjusted, the hot water can be heated, and the furnace is matched with a radiator to heat, make domestic hot water and bath. The cover plate purification range hood is adjusted to work to carry out heat exchange of smoke and purify the smoke. The air duct and the air door are adjusted, the air exchange times of indoor air can be adjusted, five functions are formed, one machine has multiple functions, and the function cost is low. The comprehensive utilization heat efficiency is nearly 100 percent (most of high-level energy is absorbed), and the use cost is low (the theoretical calculation is lower than that of urban central heating).

In addition, patentees allow the use of an innovative structure of a high-efficiency energy-saving indoor humidifying and phase-change heat transfer double-pipe heat exchanger in a gas warmer with the patent number of ZL 201621171157.1. Therefore, the stove has the advantage of extremely high heat efficiency. Has the advantage of adjusting the indoor humidity during heating in winter. Meanwhile, the smoke is discharged outdoors, part of indoor air is mixed with outdoor fresh air, and then the mixed air enters indoors after being subjected to heat exchange with the smoke, so that fresh air is supplied to the indoor air, the air heat exchange times are changed at will, and the comfort level is increased. Patentees allow the use of utility model patent No. ZL 201720683323.4: an advanced technology for heating hot water by using flue gas to reduce the temperature of the flue gas to be below 40 ℃ enables oil flue gas and water to be condensed, the condensation temperature of the oil flue gas is below 286 ℃, and the condensation temperature of the water is below 100 ℃, so that heat is recovered, the flue gas is purified, the environment-friendly requirement is met, and two purposes are achieved. The stove is particularly suitable for rural and military barracks and is particularly suitable for changing coal into gas with environmental protection requirements.

Drawings

FIG. 1 is a schematic three-dimensional structure of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a left side view of FIG. 2;

FIG. 4 is a view illustrating an overall heat exchange state of the cooking range according to the present invention when cooking;

fig. 5 is a three-dimensional schematic view of the burner unit (snap-fit state);

fig. 6 is a schematic three-dimensional structure of the open state of the burner unit;

FIG. 7 is a front view of the burner assembly of FIG. 5;

FIG. 8 is a left side view of FIG. 7;

FIG. 9 is an enlarged view of the cross-sectional view taken along line A-A in FIG. 8, showing a construction of the spindle valve;

FIG. 10 is an enlarged partial view of I of FIG. 2;

FIG. 11 is a top view of FIG. 10;

FIG. 12 is a schematic diagram of a waterway of the present invention;

FIG. 13 is a schematic diagram of a smoke path of the present invention;

FIG. 14 is an enlarged partial view of II of FIG. 13, showing a structure of a humidity adjustment structure;

fig. 15 is a sectional view taken along line B-B in fig. 14.

In the figure 1, a cooking bench 2, a burner 3, a heat exchanger 5, a main water inlet pipe 6, a circulating water pump 7, a water supply pipe 8, an electromagnetic valve 9, a fourth water pipe 10, a second water pipe 11, a heated pipe 12, a fifth water pipe 13, a water storage tank 14, a seventh water pipe 15, a water heater 16, a sixth water pipe 17, a fourth water valve 18, a burner device 19, a furnace cover 20, a fixed seat 21, a valve core 22, a screw 24, a gasket 25, a first through hole 27, a second through hole 28, a smoke inlet hole 31, a cover plate 32, a smoke outlet pipe 33, a smoke heat exchange sleeve 34, a mixed air duct 35, a double inlet fan 37, an old air duct 38, a two-way air door 39 positioning baffle 40, a handle 41, a chute 42, a blowoff valve 44, a first flue 45, a third water pipe 46, a heat radiator 48, a third flue 49, a third water valve 52, a second water valve 53, a fifth water valve 54, a sixth water valve 55, a first water valve 57, a water sealing groove 58, a smoke The left shaft valve 66 is provided with a tapered hole 67, the air door 68 is provided with an electronic water level sensor 70, an electronic water level meter 71 is provided with an air cap 72, a right shaft valve 73 is provided with an air cap 74, a torsion spring 75 is provided with an indoor hole 76, a water retaining ring 77 and a baffle 78, and a handle 79 is provided with a rotary handle 79.

Detailed Description

The invention relates to a multifunctional gas stove, which comprises a gas stove, and further comprises a radiator 47 and a heat exchanger 4 as shown in figures 1, 2 and 13, wherein the radiator 47 can be an existing heating device such as a heating radiator or floor heating, and can also be a shell-and-tube heat exchanger, smoke is filled in a shell of the radiator, and water for heat exchange is filled in a tube. The heat exchanger 4 is composed of a shell and a heated tube 11 arranged in the shell, a water inlet of the radiator 47 is communicated with a water outlet of the heated tube 11 through a pipeline, and a water outlet of the radiator 47 is communicated with a water inlet of the heated tube 11 through a pipeline. Wherein a communication pipeline between the radiator 47 and the heated pipe 11 is provided with a circulating water pump 6, and the circulating water pump 6 can drive water to circulate between the radiator 47 and the heat exchanger 4. As shown in fig. 4, a smoke inlet pipe 28 and a smoke inlet 30 are disposed on the shell of the heat exchanger 4, the smoke inlet 30 is located above the smoke inlet pipe 28, a cover plate 31 capable of being opened and closed is mounted on the smoke inlet 30, smoke generated by the gas cooker can enter the heat exchanger 4 through the smoke inlet pipe 28 or the smoke inlet 30 to be used as a heat source for heat exchange, and the heat exchanger can also perform cooling and purifying functions on the smoke. The shell of the heat exchanger 4 is connected with a smoke exhaust system which can be an existing chimney and can further exchange heat with cold air. The gas cooker comprises a cooking bench 1, a burner 2 is arranged on the cooking bench 1, a pot 63 is placed on the burner 2 and used for usual ignition and cooking, and a smoke inlet pipe 28 is positioned on one side of the burner 2 and connected with a heat exchanger 4.

Further, as shown in fig. 12, a communication pipeline between the water inlet of the heat sink 47 and the water outlet of the heated tube 11 is composed of a first water tube 45 and a second water tube 10, a third water valve 51 is installed on the second water tube 10, a communication pipeline between the water outlet of the heat sink 47 and the water inlet of the heated tube 11 is composed of a third water tube 46 and a main water inlet tube 5, a second water valve 52 is installed on the third water tube 46, one end of the first water tube 45 and one end of the third water tube 46 are respectively connected with the water inlet and the water outlet of the heat sink 47, the other end of the first water tube 45 and the other end of the third water tube 46 are connected with a fourth water tube 9, and a fifth water valve 53 is installed on the fourth water tube 9. The water outlet of the heated pipe 11 is communicated with a water storage tank 13 through a fifth water pipe 12, an electronic water level gauge 70 and a temperature sensor 69 can be installed in the water storage tank 13 to detect the water level height and the water temperature in the tank body in real time, a sixth water valve 54 is installed on the fifth water pipe 12, the water storage tank 13 is communicated with one end of a sixth water pipe 16, the other end of the sixth water pipe 16 is communicated with a fourth water pipe 9, a second water pipe 10 and a first water pipe 45 respectively, and a first water valve 55 is installed on the sixth water pipe 16. The water storage tank 13 is further connected with a seventh water pipe 14, one end of the seventh water pipe 14 is provided with a water using device 15, the water using device 15 can be an existing spray header, the main water inlet pipe 5 is provided with a water supply pipe 7, the water supply pipe 7 is provided with an electromagnetic valve 8, the seventh water pipe 14 is provided with a fourth water valve 17, and the main water inlet pipe 5 is provided with a circulating water pump 6.

Furthermore, a heat absorption pipe 50 is connected in series between the heated pipe 11 and the circulating water pump 6, and the heat absorption pipe 50 is positioned on the periphery of the furnace end 2 and can be used for absorbing the radiant heat leaked from the cooking bench 1 and the furnace cover 19.

According to the structure, the following water circulation purposes can be achieved by controlling the switch of each electromagnetic valve:

1. preparing domestic hot water: when the water level meter detects that the water level in the water storage tank 13 is lower than a set value, water is supplemented into the water storage tank 13, the electromagnetic valve 8 and the sixth water valve 54 are opened, 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, and water pumped into the water supply pipe 7 enters the water storage tank 13 through the main water inlet pipe 5, the heat absorption pipe 50, the heated pipe 11 and the fifth water pipe 12 in sequence.

2. When only the water in the water storage tank 13 is heated circularly, at this time, 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 electromagnetic valve 8 are closed, the circulating water pump 6 is started, the water in the water storage tank 13 sequentially passes through the sixth water pipe 16, the fourth water pipe 9, the main water inlet pipe 5, the heat absorbing pipe 50, the heated pipe 11 and the fifth water pipe 12, and finally enters the water storage tank 13 to complete a water circulation in the heated pipe 11 and the heat absorbing pipe 50.

3. When only the hot water in the water storage tank 13 needs to be used, the circulating water pump 6 is turned off, the fourth water valve 17 is opened at this time, the first water valve 55, the electromagnetic valve 8 and the sixth water valve 54 are closed, and the hot water in the water storage tank 13 flows out for use through the seventh water pipe 14 and the water using device 15.

4. Heating: when only the radiator 47 needs to be heated circularly, 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 electromagnetic valve 8 and the sixth water valve 54 are closed, the circulating water pump 6 is started, water in the radiator 47 sequentially passes through the third water pipe 46, the main water inlet pipe 5, the heat absorption pipe 50, the heated pipe 11, the second water pipe 10 and the first water pipe 45, and finally enters the radiator 47 to complete water circulation heated in the heated pipe 11 and the heat absorption pipe 50.

Further, the two ends of the serial connection path of the heated tube 11 and the heat absorbing tube 50 are connected in parallel with the burner unit 18, that is, the water inlet of the cooling tube 22 in the burner unit 18 is communicated with 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 unit 18 is communicated with the water outlet of the heated tube 11 through the right shaft valve 72.

As shown in fig. 5 and 6, the burner unit 18 includes a cap 19 coupled to the burner 2, and both sides of the rear portion of the cap 19 are fixed to the cooking top 1 through a left shaft valve 65 and a right shaft valve 72, respectively.

As shown in fig. 9 and 6, the right-axis valve 72 includes a fixed seat 20, and a valve core 21 rotatably engaged with the fixed seat 20 is mounted on the furnace cover 19. A cooling pipe 22 is arranged in the furnace cover 19, and the cooling pipe 22 can absorb heat energy generated by fireworks and prevent the furnace cover 19 from being burnt. The two ends of the cooling pipe 22 are respectively communicated with the valve cores 21 of the left shaft valve 65 and the right shaft valve 72, and the furnace cover 19 and the cooling pipe 22 inside the furnace cover can rotate along with the valve cores 21 to open and close. As shown in fig. 9, one end of the valve core 21, which is matched with the fixing seat 20, is conical, a conical hole 66, which is matched with one conical end of the valve core 21, is formed in the fixing seat 20, a valve core screw 23 is fixedly installed at one conical end of the valve core 21, the valve core screw 23 penetrates out of the fixing seat 20, a nut 24 is installed on the valve core screw 23 in a matched manner, a gasket 25 is installed at the periphery of the valve core screw 23 between the nut 24 and the fixing seat 20, and the nut 24 is screwed down to enable the conical end of the valve core 21 to be in axial compression fit with the fixing seat 20, that is, the conical hole 66 in the fixing seat 20 is tightly matched with the conical outer surface of the valve. A first through hole 26 is formed in one side of the fixed seat 20, a second through hole 27 vertically communicated with an inner cavity of the valve core 21 is formed in the side of the valve core 21, and the first through hole 26 and the second through hole 27 can be correspondingly communicated.

As shown in fig. 4, an arc wind guard 61 is installed on the cooktop 1 around the burner 2, and the arc wind guard 61 is engaged with the inner wall of the stove cover 19 to prevent the smoke from being scattered.

The working principle of the left shaft valve 65 and the right shaft valve 72 is as follows: when the furnace cover 19 covers the furnace end 2, the second through hole 27 is communicated with the first through hole 26, circulating water can enter the cooling pipe 22 to be heated, when the furnace cover 19 is turned upwards and opened, the second through hole 27 is disconnected with the first through hole 26, and the circulating water cannot enter the furnace end device 18. The water cavity is arranged in the smoke inlet pipe 28, the smoke inlet pipe 28 can be an existing water jacket, the water outlet of the smoke inlet pipe 28 is communicated with the first through hole 26 of the left shaft valve 65, the water inlet of the smoke inlet pipe 28 is communicated with the water outlet of the circulating water pump 6, the air passage of the smoke inlet pipe 28 is communicated with the shell of the heat exchanger 4, the air inlet of the smoke inlet pipe 28 is provided with a sealing gate 60, the sealing gate 60 can be a middle air door described in patent document CN201821761494.5 or an existing gate capable of being opened and closed automatically or manually, so that whether smoke enters the heat exchanger 4 through the smoke inlet pipe 28 or not can be controlled.

When the stove head 2 is in a non-cooking state, as shown in fig. 1 and 5, the stove cover 19 is completely covered on the stove head 2, at this time, the second through hole 27 in the valve core 21 is communicated with the first through hole 26 in the fixing seat 20, water injected from the main water inlet pipe 5 is divided into two paths, one path enters the heated pipe 11, the other path enters the cooling pipe 22 through the smoke inlet pipe 28 and the left shaft valve 65, heat generated by the stove head 2 in the combustion process exchanges heat with water with lower temperature in the cooling pipe 22, and the heated water enters the fifth water pipe 12 through the right shaft valve 72.

The structure and the working principle of the range hood are as follows: when water is heated, during the combustion process of the furnace end 2, the smoke exhaust system absorbs smoke, the furnace cover 19 is closed, the sealing gate 60 of the smoke inlet pipe 28 is opened, negative pressure is generated in the shell of the heat exchanger 4, the smoke generated by the combustion of the furnace end 2 is sucked into the smoke inlet pipe 28 and enters the heat exchanger 4, the smoke passing through the smoke inlet pipe 28 exchanges heat with water in the smoke inlet pipe 28 again to further improve the water temperature, the smoke entering the shell of the heat exchanger 4 exchanges heat with water in the heated pipe 11, the water after the temperature rise is pumped into the water storage tank 13 through the fifth water pipe 12, and the cover plate 31 closes the smoke inlet 30 in the process, so that the negative pressure in the heat exchanger 4 can be prevented from rising, and the smoke operation is ensured.

When the burner 2 is in the cooking position, as shown in fig. 6, the lid 19 is opened, the second through hole 27 is no longer in communication with the first through hole 26, and the water in the main inlet pipe 5 only enters the heated pipe 11 and not the cooling pipe 22.

At this time, the smoke exhaust system works to suck oil smoke by the negative pressure of the heat exchanger 4, the sealing gate 60 of the smoke inlet pipe 28 is closed to prevent the pressure in the smoke exhaust path from rising, the shell of the heat exchanger 4 keeps the negative pressure, the cover plate 31 is opened, smoke and oil smoke generated by combustion can be sucked into the smoke inlet 30 to enter the heat exchanger 4 and exchange heat with the heated pipe 11, and water after being heated and warmed can be pumped into the water storage tank 13 through the fifth water pipe 12. The oil smoke is condensed into liquid after being cooled and separated from the smoke, thereby playing the role of purifying the smoke.

The multifunctional gas stove meets the environmental protection requirement of coal-to-gas equipment, has the functions of cooking, heating, oil fume extraction, water heating, ventilation and the like, can respectively carry out heat exchange in different modes under the two conditions of cooking and non-cooking, and has small heat loss and high heat exchange efficiency. The heated domestic water can be circularly heated under the driving of the circulating water pump. The smoke discharging and heat exchanging system can discharge smoke outdoors, can mix fresh air for indoor gas through the double-inlet fan and exchange heat with the smoke, and can also control fresh air to enter indoor proportion through the air door so as to guarantee indoor temperature and fresh air coefficient and guarantee heat exchange gas quantity. The whole equipment has low cost, convenient use and small occupied area, solves the common defects of the existing coal-to-gas equipment, and is favorable for popularization and use in a wide area of the whole country. This application can reach five functions with a heat source, an air flue, a water course, a water pump, two fans through the change of air door gate valve and bell, and five function difference are: cooking 1, cooking 2, smoke exhaust ventilator 3, heating 4, domestic hot water 5 and indoor air conditioning 5.

Preferably, two burners 2 are installed side by side on the cooking bench 1, or a plurality of burners 2 may be installed. The vertically arranged partition plate 3 is arranged between the two furnace ends 2 to cause the three-side negative pressure to enable the smoke column to approach the heat exchanger 4, a set of furnace end devices 18 is correspondingly arranged on each furnace end 2, namely, the two sets of furnace end devices 18 are connected in parallel at two ends of a serial passage of the heat absorbing pipe 50 and the heat receiving pipe 11, when the two sets of furnace ends 2 are in a non-cooking state, the two sets of furnace end devices 18 can improve the power of the device, and the two sets of furnace end devices 18 are connected in parallel, so that the using states of the two sets of furnace end devices cannot be influenced mutually. When one burner is used, the other burner cover, sealing shutter 60 and cover plate 31 are closed.

Preferably, in order to adjust the opening and closing state of the cover plate 31 to adapt to different heat exchange modes, as shown in fig. 4, a positioning baffle 39 capable of sliding along the cover plate 31 is installed in the cover plate 31 in a matching manner, a handle 40 is installed on the positioning baffle 39, a sliding chute 41 matched with the handle 40 is formed in the cover plate 31, the sliding chute 41 is arranged along the length direction of the cover plate 31, clamping grooves 42 matched with the positioning baffle 39 are formed in positions on two sides of the partition plate 3, the clamping grooves 42 are obliquely arranged, when the positioning baffle 39 is positioned in the clamping grooves 42, the cover plate 31 can be obliquely positioned above the furnace end 2, flue gas enters the heat exchanger 4 through the flue gas inlet 30, when the flue gas inlet 30 needs to be closed, the positioning baffle 39 is separated from the clamping grooves 42 only by pulling the handle 40, the cover plate 31 falls back under the action of gravity and the torsion spring 74, the flue gas inlet 30 is sealed, the opening and closing state of the smoke inlet 30 can be switched rapidly. Torsional spring 74 can be installed in the pivot of apron 31, and torsional spring 74 has the trend that makes apron 31 close flue gas inlet hole 30 all the time apron 31 still installs the sealing strip with flue gas inlet hole 30 matched with position department to further guarantee apron 31 when being in the closed condition, the leakproofness in whole heat exchanger 4 slows down thermal outer loosing.

Preferably, as shown in fig. 10 and 11, the smoke exhaust system is a smoke exhaust heat exchange system, the smoke exhaust heat exchange system includes a smoke outlet pipe 32 connected to the housing of the heat exchanger 4, a smoke exhaust fan 33 is installed at one end of the smoke outlet pipe 32, a hood 73 is installed at the top of the smoke exhaust fan 33 to prevent downdraught, a smoke heat exchange sleeve 34 is installed at the periphery of the smoke outlet pipe 32, a through hole is formed at the bottom of the smoke heat exchange sleeve 34 and is communicated with the indoor, the smoke heat exchange sleeve 34 is communicated with the air outlet of the double-inlet fan 36 through a mixed air duct 35, a fresh air duct 62 is installed at one air inlet of the double-inlet fan 36, the fresh air duct 62 is communicated with the outdoor atmosphere, a filter screen 29 is installed in the fresh air duct 62, and the other air inlet is communicated with the indoor environment through an old air duct 37 to increase ventilation volume and flow, the mixing duct 35 is also provided with a two-way damper 38 that can be opened and closed. All install air door 67 in the new tuber pipe way of two import fans 36 and outdoor atmosphere UNICOM and old wind pipeline 37, air door 67 can be with the plectane of installation on swing arm and the swing arm, wherein the plectane is located inside the pipeline and rather than cooperating, rotates the swing arm and can drive the plectane and rotate to the flow of passing through gas in the regulation pipeline. As shown in fig. 11, the bidirectional damper 38 can close the mixed air duct 35 and open the inner hole 75 of the chamber, so that the mixed air duct 35 is no longer communicated with the flue gas heat exchange sleeve 34, and the fresh air discharged by the double-inlet fan 36 directly enters the chamber and is no longer heated, so as to be used in the non-heating period.

Wherein the oil smoke fan 33 and the double-inlet fan 36 are both located outdoors, the smoke heat exchange sleeve 34 and the two-way air door 38 are both located indoors, the oil smoke fan 33 on the smoke outlet pipeline 32 is used for discharging smoke generated by combustion outdoors, the double-inlet fan 36 is used for introducing fresh air and indoor air indoors, when the weather is cold, the indoor air volume is increased, the fresh air is reduced, because the smoke entering the smoke outlet pipeline 32 still has certain waste heat, in order to increase the indoor temperature, the two-way air door 38 rotates to the outer side of the mixed air channel 35 at the moment, the chamber inner hole 75 is closed, the mixed air blown into the mixed air channel 35 by the double-inlet fan 36 can enter the smoke heat exchange sleeve 34 to exchange heat with the smoke outlet pipeline 32, and then enters indoors after the temperature is raised. When the temperature is high in summer and the like, the two-way damper 38 rotates to the position shown by the dotted line in fig. 11, most of the air blown into the mixed air duct 35 by the two-inlet fan 36 directly enters the room through the gap at the two-way damper 38, heat exchange is not generated, the temperature does not rise in the room, and therefore the indoor temperature does not rise while ventilation is performed.

Preferably, a structure of a water-sealed humidifying device is arranged in the flue gas emission heat exchange system, the structure of the water-sealed humidifying device is shown in fig. 13 and 14, the flue gas outlet pipeline 32 in the flue gas heat exchange sleeve 34 comprises a first flue 44 and a second flue 48 which are mutually inserted, the top of the first flue 44 extends into the second flue 48, the top end of the first flue 44 extending into the second flue 48 is provided with a water retaining ring 76, and a water-sealed groove 57 is arranged between the first flue 44 and the second flue 48, as shown in fig. 15. A third through hole 49 is formed in the lower portion of the sleeved position of the second flue 48 and the first flue 44, a threaded hole is formed in the flue gas heat exchange sleeve 34 corresponding to the position of the third through hole 49, an adjusting valve is installed in the threaded hole in a matched mode and comprises a stud 56 and a baffle plate 77, the stud 56 is matched with the threaded hole, the baffle plate 77 is installed at one end, extending into the flue gas heat exchange sleeve 34, of the stud 56, the baffle plate 77 can be matched with the third through hole 49 for adjustment, and the water quantity can be adjusted through the device. The specific scheme of the mutual insertion of the first flue 44 and the second flue 48 is that the insertion part of the first flue 44 is an insertion pipe 71, as shown in fig. 15, the insertion pipe 71 is matched with the inner diameter of the second flue 48, the outer wall of the insertion pipe 71 is axially recessed inwards to form a water seal groove 57, the water seal groove 57 is communicated with the third through hole 49, and condensed water can enter the flue gas heat exchange sleeve 34 through the water seal groove and is used for wetting air entering a room after heat absorption and evaporation. As shown in fig. 15, two water seal grooves 57 are formed in the insertion pipe 71, and two third through holes 49 respectively communicating with the water seal grooves 57 are formed in the second flue duct 48.

The operation principle of the water-sealed humidifying device is shown in fig. 13, the flue gas exchanges heat with the air in the flue gas outlet pipe 32, condensed water is generated on the inner wall of the second flue 48, and the condensed water is collected to the water-sealed 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 duct 48 can form a liquid seal at the position of the third through hole 49, so that air is prevented from entering the smoke side, and the pressure in the cylinder is prevented from changing. The stud 56 which is matched and arranged on the smoke heat exchange sleeve 34 can be provided with a rotating handle 78, the baffle 77 can be used for adjusting the water inflow of the third through hole 49 by rotating the handle, so that the third through hole 49 can be opened and closed according to requirements, and the humidity of the air entering the room can be changed.

Preferably, 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 are all provided with heat insulation layers, so that heat loss can be reduced, and the heat exchange efficiency can be ensured.

Preferably, as shown in fig. 1, a blowoff valve 43 is disposed at the bottom of the heat exchanger 4, impurities such as oil stain liquid and condensed grease are inevitably deposited after the heat exchanger 4 is used for a long time due to entering of oil smoke for heat exchange, and the blowoff valve 43 is disposed to empty the impurities inside the heat exchanger 4, so that the heat exchange efficiency of the whole device is prevented from being influenced by blockage.

Preferably, as shown in fig. 13, 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 plate 58 is fixed on the inner wall of the heat exchanger 4, and a gap is formed between the other end of each smoke baffle plate 58 and the inner wall of the other side of the heat exchanger 4. The smoke baffle plate 58 can make the smoke entering the heat exchanger 4 rise in an S shape, the stroke of the smoke in the heat exchanger 4 is lengthened, and the heat exchange efficiency with the heated tube 11 is improved. An oil smoke channel wall 59 is further installed in the heat exchanger 4, the oil smoke channel wall 59 is vertically fixed on the inner wall of the heat exchanger 4 and is spaced from the bottom of the heat exchanger 4 at a certain distance, an oil smoke channel 64 is formed between the oil smoke channel wall 59 and the heat exchanger 4, the oil smoke channel wall 59 is located at the rear lower end of the smoke inlet 30, and the arrangement of the oil smoke channel 64 can ensure that when cooking is carried out, smoke entering the heat exchanger 4 from the smoke inlet 30 firstly falls to the bottom of the heat exchanger 4 through the oil smoke channel 64 to be mixed with the smoke, then is discharged out of the heat exchanger 4 from bottom to top to be liquid oil and air, and then is discharged into the smoke outlet channel 32 from.

The multifunctional gas stove is provided with a temperature controller, a temperature sensor 69 and an electronic water level gauge 70 are arranged in a water storage tank 13, the temperature controller, the temperature sensor 69 and the electronic water level gauge 70 are all connected to a control circuit board in an electric control box 68 through leads, the electric control box 68 is respectively connected with the oil fume fan 33, the double-inlet fan 36, the water pump and the gas electromagnetic valve igniter through control circuits, by setting the specified room temperature, water temperature and water level in the water storage tank 13 on the electronic control box 68, the start and stop of the oil fume fan 33 and the double-inlet fan 36 can be respectively and automatically controlled, the room temperature is adjusted by opening and closing the two-way air door 38, the temperature of circulating water is adjusted by controlling the automatic opening degree of the gas electromagnetic valve and the start and stop of the water pump, and the operations of automatically adding water in the water storage tank 13 and the like are performed by controlling the opening and closing of the electromagnetic valve on the water supply main pipe. Optimizing: when the water valve is fully changed to an electromagnetic valve and the bidirectional damper 38 is controlled by a motor, the circuit in the electronic control box 68 is a microcomputer circuit. The actions of the water valve, the air valve, the motor bidirectional air valve, the fan and the igniter can be controlled by cooking, heating water, air exchange and other programs.

The functional examples of the invention are as follows:

1. when cooking is performed: when the furnace head 2 is lifted up to open the furnace cover 19 for combustion and the flame heating pot 63 is in a cooking state, as shown in fig. 6, the furnace cover 19 is opened, the second through hole 27 is not communicated with the first through hole 26, and the water in the main water inlet pipe 5 only enters the heated pipe 11 but not the cooling pipe 22. At this time, the smoke exhaust system works to suck smoke, 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 rising, negative pressure is kept in the shell of the heat exchanger 4, the cover plate 31 is opened, smoke and smoke generated by combustion can be sucked into the smoke inlet 30 to enter the heat exchanger 4 and exchange heat with the heated pipe 11, and water after being heated and warmed is pumped into the water storage tank 13 through the fifth water pipe 12.

2. When heating is carried out: when the furnace cover 19 is put down and is burned in a combustion chamber, flame smoke completely enters the heat receiving pipe 11 in the heat exchanger 4 through the smoke inlet pipe 28, and only the heat radiator 47 needs to be heated circularly, 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 electromagnetic valve 8 and the sixth water valve 54 are closed, the circulating water pump 6 is started, water in the heat radiator 47 sequentially passes 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, and finally enters the heat radiator 47 to complete water circulation heated in the heat receiving pipe 11.

3. When making life hot water: when the burner 2 is in a water heating state and only circularly heats water in the water storage tank 13, 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 electromagnetic valve 8 are closed, the circulating water pump 6 is started, water in the water storage tank 13 sequentially passes through the sixth water pipe 16, the fourth water pipe 9, the main water inlet pipe 5, the heat absorption pipe 50, the heated pipe 11 and the fifth water pipe 12, and finally enters the water storage tank 13 to complete a water circulation heated in the heated pipe 11. When the water level meter detects that the water level in the water storage tank 13 is lower than a set value, the water in the water storage tank 13 is filled, the electromagnetic valve 8 and the sixth water valve 54 are opened, 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, and the water pumped from the water supply pipe 7 enters the water storage tank 13 through the main water inlet pipe 5, the heat absorption pipe 50, the heated pipe 11 and the fifth water pipe 12 in sequence.

4. The purification working process of the range hood is as follows: when the burner 2 is in a cooking state, the heat of the flame smoke after heating the pot 63 is still large, at this time, the smoke exhaust system works to absorb the oil smoke, the sealing gate 60 of the smoke inlet pipe 28 is closed, the shell of the heat exchanger 4 keeps negative pressure, the cover plate 31 is opened, the smoke generated by combustion is sucked into the heat exchanger 4 through the smoke inlet hole 30 and exchanges heat with the heated pipe 11, the oil and the gas are separated, and the water after heating and temperature rising is injected into the water storage tank 13 through the fifth water pipe 12. The gas enters the smoke outlet pipeline 32 for heat exchange and then is discharged into the atmosphere, and the dirty oil is deposited at the bottom of the heat exchanger 4.

5. To ensure the indoor air is fresh, the air exchange is adjusted: the smoke discharging and heat exchanging system comprises a smoke discharging pipeline 32 connected with a shell of the heat exchanger 4, a smoke fan 33 is installed at one end of the smoke discharging pipeline 32, a smoke heat exchanging sleeve 34 is installed on the periphery of the smoke discharging pipeline 32, a through hole is formed in the bottom of the smoke heat exchanging sleeve 34 and is communicated with the indoor space, the smoke heat exchanging sleeve 34 is communicated with an air outlet of the double-inlet fan 36 through a mixed air channel 35, a fresh air pipeline 62 is installed at one air inlet of the double-inlet fan 36, the fresh air pipeline 62 is communicated with the outdoor atmosphere, the other air inlet is communicated with the indoor environment through an old air pipeline 37, and a bidirectional air door 38 capable of being opened and closed is further installed on the mixed air. All install air door 67 in the new tuber pipe way of two import fans 36 and outdoor atmosphere UNICOM and old wind pipeline 37, air door 67 can be the plectane of installation on swing arm and the swing arm, and wherein the plectane is located inside the pipeline and rather than cooperating, rotates the swing arm and can drive the plectane and rotate to adjust the interior flow that passes through gas of pipeline. As shown in fig. 11, the bidirectional damper 38 can rotate and close to the inside of the mixed air duct 35 when the air temperature is high, so that the mixed air duct 35 is no longer communicated with the flue gas heat exchange sleeve 34, the mixed air duct opens to the indoor hole 75, and fresh air exhausted by the double-inlet fan 36 directly enters the indoor space and is no longer heated.

The oil smoke fan 33 and the double-inlet fan 36 are located outdoors, the smoke heat exchange sleeve 34 and the bidirectional air door 38 are located indoors, the oil smoke fan 33 on the smoke outlet pipeline 32 is used for purifying smoke generated by combustion and then discharging the purified smoke outdoors, meanwhile, negative pressure is generated for the heat exchanger 4, the double-inlet fan 36 is used for sucking indoor air and introducing fresh air, the indoor air is sent into the air side of the smoke heat exchange sleeve 34 for heat exchange to generate positive pressure, when the weather is cold, as the smoke entering the smoke outlet pipeline 32 still has certain waste heat, in order to increase the indoor temperature, the bidirectional air door 38 rotates to the outer side of the mixed air channel 35 to block an indoor passage, the double-inlet fan 36 sends the air in the mixed air channel 35, the air can enter the air side of the smoke heat exchange sleeve 34 to exchange heat with the smoke outlet pipeline 32, and then enters the indoor space. In summer and the like, when the temperature is high, the two-way damper 38 is rotated to the position of the dotted line shown in fig. 11, and the air discharged into the mixing duct 35 by the two-way inlet fan 36 directly enters the room through the indoor hole 75 opened by the two-way damper 38 without heat exchange, so that the indoor temperature is not raised while ventilation is performed. The function of sucking indoor air: 1 reheating, 2 increasing the heat exchange gas quantity, increasing the heat exchange effect, 3 flowing indoor air, and uniform room temperature.

6. Preferably, the structure of the water-sealed humidifying device is as shown in fig. 13 and 14, the smoke outlet pipe 32 in the smoke heat exchange sleeve 34 includes a first smoke channel 44 and a second smoke channel 48 which are inserted into each other, the top of the first smoke channel 44 extends into the second smoke channel 48, the top of the first smoke channel 44 extending into the second smoke channel 48 is provided with a water retaining ring 76, a water-sealed groove 57 is formed between the first smoke channel 44 and the second smoke channel 48, a third through hole 49 is formed at the position where the second smoke channel 48 is sleeved with the first smoke channel 44, the third through hole 49 is located at the bottom of the water-sealed groove 57 and corresponds to the position of the third through hole 49, a threaded hole is formed in the smoke heat exchange sleeve 34, an adjusting valve is installed in the threaded hole in a matching manner, the adjusting valve includes a stud 56 and a baffle 77, the baffle 77 is installed at one end of the stud 56 extending into the smoke heat exchange sleeve 34, and the. The specific scheme of the mutual insertion of the first flue 44 and the second flue 48 is that the insertion part of the first flue 44 is an insertion pipe 71, as shown in fig. 15, the insertion pipe 71 is matched with the inner diameter of the second flue 48, the outer wall of the insertion pipe 71 is axially recessed inwards to form a water seal groove 57, the water seal groove 57 is communicated with the third through hole 49, and condensed water can enter the air side of the flue gas heat exchange sleeve 34 through the channel and is used for wetting air entering a room after heat absorption and evaporation. As shown in fig. 15, two water seal grooves 57 are formed in the insertion pipe 71, and two third through holes 49 respectively communicating with the water seal grooves 57 are formed in the second flue duct 48.

The operation principle of the water-sealed humidifying device is shown in fig. 13, the smoke and the air are subjected to heat exchange in the process of rising in the smoke outlet pipeline 32, condensed water is generated on the inner wall of the second smoke channel 48, the condensed water is collected to the water-sealed tank 57, and the condensed water can enter the smoke heat exchange sleeve 34 through the third through hole 49 to be heated into steam 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, so that air is prevented from entering the flue gas heat exchange sleeve 34, and the flue gas negative pressure is maintained. The stud 56 which is matched and arranged on the smoke heat exchange sleeve 34 can be provided with a rotating handle 78, the baffle 77 can be used for adjusting the water inflow of the third through hole 49 by rotating the handle, so that the third through hole 49 can be opened and closed according to requirements, and the humidity of the air entering the room can be changed. The pressure generated by the height of the water level in the water seal tank 57 is greater than the pressure difference between the air side and the smoke side, so that the air on the air side with higher pressure is prevented from entering smoke and damaging the negative pressure of the smoke.

The technical solution of the present invention is not limited to the scope of the embodiments of the present invention. The technical contents not described in detail in the present invention are all known techniques.

Claims

1. The utility model provides a multi-functional stove of gas, includes gas cooking utensils, gas cooking utensils include top of a kitchen range (1), installs furnace end (2) on top of a kitchen range (1), its characterized in that: the heat exchanger (4) is composed of a shell and a heated pipe (11) arranged in the shell, a water inlet of the radiator (47) is communicated with a water outlet of the heated pipe (11) through a pipeline, a water outlet of the radiator (47) is communicated with a water inlet of the heated pipe (11) through a pipeline, a circulating water pump (6) is arranged on a communicating pipeline between the radiator (47) and the heated pipe (11), a smoke inlet pipe (28) and a smoke inlet hole (30) are arranged on the shell of the heat exchanger (4), the smoke inlet hole (30) is positioned above the smoke inlet pipe (28), a cover plate (31) which can be opened and closed is arranged on the smoke inlet hole (30), and the shell of the heat exchanger (4) is connected with a smoke exhaust system; the smoke inlet pipe (28) is positioned at one side of the furnace end (2).

2. The gas multifunctional stove according to claim 1, wherein: a communication pipeline between a water inlet of the radiator (47) and a water outlet of the heated pipe (11) is composed of a first water pipe (45) and a second water pipe (10), a third water valve (51) is installed on the second water pipe (10), a communication pipeline between a water outlet of the radiator (47) and a water inlet of the heated pipe (11) is composed of a third water pipe (46) and a main water inlet pipe (5), a second water valve (52) is installed on the third water pipe (46), one ends of the first water pipe (45) and the third water pipe (46) are respectively connected with the water inlet and the water outlet of the radiator (47), the other ends of the first water pipe (45) and the third water pipe (46) are respectively connected with two ends of a fourth water pipe (9), a fifth water valve (53) is installed on the fourth water pipe (9), the water outlet of the heated pipe (11) is communicated with a water storage tank (13) through the fifth water pipe (12), and a sixth water valve (54) is installed on the fifth water pipe (12), storage water tank (13) and the one end UNICOM of sixth water pipe (16), the other end of sixth water pipe (16) respectively with fourth water pipe (9) UNICOM, second water pipe (10) and first water pipe (45) UNICOM, install first water valve (55) on sixth water pipe (16), storage water tank (13) still is connected with seventh water pipe (14), and water ware (15) are used in the one end installation of seventh water pipe (14), installs delivery pipe (7) on main inlet tube (5), installs solenoid valve (8) on delivery pipe (7), installs fourth water valve (17) on seventh water pipe (14), installs circulating water pump (6) on main inlet tube (5).

3. The gas multifunctional stove according to claim 2, characterized in that: and a heat absorption pipe (50) is connected between the heated pipe (11) and the circulating water pump (6) in series, and the heat absorption pipe (50) is positioned on the periphery of the furnace end (2).

4. The gas multifunctional stove according to claim 3, wherein: the two ends of a passage formed by connecting the heated pipe (11) and the heat absorption pipe (50) in series are connected with a burner device (18) in parallel, the burner device (18) comprises a burner cover (19) matched with a burner (2), two sides of the rear part of the burner cover (19) are respectively connected with a cooking bench (1) through a left shaft valve (65) and a right shaft valve (72), the structures of the left shaft valve (65) and the right shaft valve (72) are the same, the left shaft valve (65) and the right shaft valve (72) both comprise a fixed seat (20), a valve core (21) rotationally matched with the fixed seat (20) is installed on the burner cover (19), a cooling pipe (22) is installed inside the burner cover (19), two ends of the cooling pipe (22) are respectively communicated with the valve cores (21) of the left shaft valve (65) and the right shaft valve (72), one end of the valve core (21) matched with the fixed seat (20) is conical, a valve core screw (23) is fixedly installed on one conical, the valve core screw rod (23) penetrates through the fixed seat (20), a nut (24) is installed on the valve core screw rod (23) in a matched mode, the nut (24) is screwed down to enable the conical end portion of the valve core (21) to be in axial compression fit with the fixed seat (20), the air tightness of the valve core (21) and the fixed seat (20) is improved, a first through hole (26) is formed in one side of the fixed seat (20), a second through hole (27) communicated with the inner cavity of the valve core (21) is formed in the side portion of the valve core (21), and the first through hole (26) and the second through hole (27) can; when the furnace cover (19) covers the furnace end (2), the second through hole (27) is communicated with the first through hole (26), and when the furnace cover (19) is turned upwards and opened, the second through hole (27) is disconnected with the first through hole (26); a water cavity is arranged in the smoke inlet pipe (28), a water outlet of the smoke inlet pipe (28) is communicated with the first through hole (26) of the left shaft valve (65), a water inlet of the smoke inlet pipe (28) is communicated with a water outlet of the circulating water pump (6), an air passage of the smoke inlet pipe (28) is communicated with the shell of the heat exchanger (4), and a sealing gate (60) is arranged at a gas inlet of the smoke inlet pipe (28).

5. The gas multifunctional stove according to claim 4, wherein: two furnace ends (2) are arranged on the cooking bench (1) side by side, a vertically arranged partition plate (3) is arranged between the two furnace ends (2), and a furnace end device (18) is correspondingly arranged on each furnace end (2).

6. The gas multifunctional stove according to claim 1, wherein: the smoke exhaust system is a smoke exhaust heat exchange system, the smoke exhaust heat exchange system comprises a smoke outlet pipeline (32) connected with a shell of a heat exchanger (4), an oil smoke fan (33) is installed at one end of the smoke outlet pipeline (32), a smoke heat exchange sleeve (34) is installed on the periphery of the smoke outlet pipeline (32), the smoke heat exchange sleeve (34) is communicated with the indoor space, the smoke heat exchange sleeve (34) is communicated with an air outlet of a double-inlet fan (36) through a mixed air duct (35), one air inlet of the double-inlet fan (36) is communicated with the outdoor atmosphere, the other air inlet is communicated with the indoor environment through an old air duct (37), and a bidirectional air door (38) capable of being opened and closed is further installed on the mixed air duct (35).

7. The gas multifunctional stove according to claim 6, wherein: the smoke outlet pipeline (32) in the smoke heat exchange sleeve (34) comprises a first smoke channel (44) and a second smoke channel (48) which are mutually spliced, the top of the first smoke channel (44) extends into the second smoke channel (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 arranged at the position where the second flue (48) is sleeved with the first flue (44), corresponding to the position of third through-hole (49), set up the screw hole on flue gas heat transfer sleeve (34), the screw hole fit in installation governing valve, the governing valve includes double-screw bolt (56) and baffle (77), baffle (77) are installed to the one end that double-screw bolt (56) stretched into flue gas heat transfer sleeve (34), baffle (77) can coordinate the adjustment with third through-hole (49).

8. The gas multifunctional stove according to claim 1, wherein: and heat preservation layers are respectively arranged on the outer surface of the heat exchanger (4), the inner side surface and the outer side surface of the furnace cover (19) and the outer surface of the smoke inlet pipe (28).

9. The gas multifunctional stove according to claim 1, wherein: and a blow-down valve (43) is arranged at the bottom of the heat exchanger (4).

10. The gas multifunctional stove according to claim 1, wherein: the heat exchanger (4) inner wall both sides are installed and are kept off cigarette board (58) that the level was crisscross to be set up, and the one end of every cigarette board (58) of keeping off all fixes on heat exchanger (4) inner wall, and the other end that keeps off cigarette board (58) all has the clearance with heat exchanger (4) opposite side inner wall still install oil smoke passageway wall (59) in heat exchanger (4), and oil smoke passageway wall (59) are vertical to be fixed on heat exchanger (4) top inner wall, leave a determining deviation with heat exchanger (4) bottom, oil smoke passageway wall (59) are located flue gas inlet (30) rear end.