Combined cooking and heating integrated device and multi-heat-source complementary heating system

Abstract

The utility model belongs to the technical field of heating, and discloses a combined cooking and heating integrated device and a multi-heat-source complementary heating system. A combined cooking and heating integrated device comprises a stove and a heat exchange water tank used for containing water. The heat exchange water tank and the stove are arranged in a split mode, a smoke pipe is fixedly arranged in the heat exchange water tank, the air inlet end of the smoke pipe is detachably connected with a smoke outlet of the stove, and the exhaust end of the smoke pipe extends out of the heat exchange water tank. And a water jacket is fixedly arranged on the wall of the stove and is communicated with the heat exchange water tank through a return pipe and a water outlet pipe. The multi-heat-source complementary heating system comprises heating equipment and the device, and the heat exchange water tank is fixedly connected to a water inlet pipe and a water return pipe of the heating equipment. The utility model can be used independently, can heat by using the heat exchange water tank during cooking, can also be combined with a heating system for effective complementation, provides emergency guarantee or increases the heating effect, and is suitable for rural heating.

Description

Technical Field

[0001] The utility model belongs to the technical field of heating, relates to a combined cooking and heating integrated device, and also relates to a combined multi-heat source complementary heating system. Background Art

[0002] At present, coal-to-electricity or coal-to-gas has been basically popularized in rural areas. However, due to various restrictions, there is a possibility of insufficient supply of electricity or gas or supply interruption under special circumstances. In order to protect people's livelihood, it is necessary to prepare emergency plans. Household heating stoves have become emergency cooking and heating devices in rural areas. The heating method of the heating stove is to use the heat emitted by the furnace wall itself, but the disadvantages of this heating method are: (1) The heat of the furnace wall can only be emitted around the furnace body, the heating area is limited, and the heat source utilization rate is low; (2) The flue gas is directly discharged into the air, not only the waste heat of the flue gas cannot be effectively utilized, resulting in waste, but also the harmful substances in the flue gas will pollute the environment; (3) The existing heating stove can only be used alone and cannot be combined with the existing heating system, making the water heating method single and unable to form an effective complement with the existing heat source, resulting in waste. Utility Model Content

[0003] In order to solve the above deficiencies in the prior art, the utility model aims to provide a combined cooking and heating device to achieve the purpose of improving the utilization rate of heat sources, saving energy and reducing emissions;

[0004] The utility model also provides a multi-heat source complementary heating system to achieve the purpose of combining with or complementing the existing heating system to provide emergency protection.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A combined cooking and heating device includes a stove and a water exchange water tank for holding water;

[0007] The heat exchange water tank and the stove are separately arranged, a smoke pipe is fixedly arranged in the heat exchange water tank, an air inlet end of the smoke pipe is detachably connected to a smoke exhaust port of the stove, and an exhaust end of the smoke pipe extends out of the heat exchange water tank;

[0008] A water jacket is fixedly arranged on the furnace wall of the furnace, and the water jacket is communicated with the heat exchange water tank through a return pipe and a water outlet pipe.

[0009] As a limitation of the present utility model, the heat exchange water tank includes an inner box body and an outer box body sleeved on the inner box body, a water cavity is formed between the outer box body and the inner box body and inside the inner box body, a water outlet connected to the water cavity is provided on the inner box body, a flue gas pipe is fixed in the inner box body, and a return pipe and a water outlet pipe are fixedly connected to the outer box body.

[0010] As a further limitation of the present invention, the water jacket is surrounded by the outer wall of the stove, and an electric heating device is fixedly arranged in the water jacket of the stove.

[0011] As another limitation of the present invention, the stove includes a stove body with a smoke exhaust port, an air distribution ring fixed in the stove body, a grate fixed on the air distribution ring, a fuel cylinder fixed on the grate and an air distribution cylinder fixed on the air distribution ring; the fuel cylinder is provided with ventilation holes, the holes on the grate are first air distribution holes, the grate is also provided with second air distribution holes, and the air distribution ring is provided with third air distribution holes; the third air distribution holes are arranged in an alternating manner, and the four corners of the air distribution ring are also provided with reinforced air distribution holes, and the opening area of ​​the reinforced air distribution holes is larger than the opening area of ​​the third air distribution holes.

[0012] As a limitation of the present utility model, a smoke return port is further provided on the air distribution ring, and the opening area of ​​the smoke return port is larger than the opening area of ​​the enhanced air distribution hole.

[0013] As a further limitation of the present invention, an air distribution duct is fixedly provided on the smoke exhaust port of the stove, and a sealing plug is detachably provided on the air distribution duct.

[0014] As a further limitation of the present invention, a wind shield ring is fixedly provided at one end of the air distribution tube close to the fire mouth, the outer edge of the wind shield ring is fixedly connected to the air distribution tube, and the inner edge is fixedly connected to the fuel cylinder; a fire gathering cylinder is fixedly provided on the wind shield ring, a through hole is provided on the cylinder wall of the fire gathering cylinder, the upper port area of ​​the fire gathering cylinder is smaller than the area of ​​the upper port of the fuel cylinder; the density of the ventilation holes on the fuel cylinder away from the grate is greater than the density of the ventilation holes on the end close to the grate.

[0015] As the third limitation of the present utility model, a gasification core is placed on the grate, and the gasification core includes a gasification plate placed on the grate, a gasification cylinder fixed on the gasification plate, and a gasification sleeve sleeved on the gasification cylinder, and the gasification plate, the gasification cylinder and the gasification sleeve are all provided with gasification holes.

[0016] A multi-heat source complementary heating system comprises heating equipment and the above-mentioned combined cooking and heating device, wherein the water exchange tank of the combined cooking and heating device is fixedly connected to the water inlet pipe and the water return pipe of the heating equipment.

[0017] Due to the adoption of the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0018] (1) The utility model combines an existing stove with a heat exchange water tank. The stove can be used alone for cooking, and the heat exchange water tank can be placed at a location where heating is required as a heat dissipation device, which has more complete functions. There are two sources of heat for the heat exchange water tank. One is to directly heat the water in the heat exchange water tank by the waste heat of the flue gas discharged by the stove. The waste heat of the flue gas is utilized. At the same time, the pollutants in the flue gas are precipitated in the flue gas pipe at low temperature, which reduces the emission of pollutants and plays a role in energy conservation and emission reduction. The other is to exchange heat between the water jacket arranged on the stove body and the water in the heat exchange water tank. The water jacket utilizes the heat emitted by the stove body itself, which increases the heating area and improves the heat utilization rate.

[0019] (2) The utility model heat exchange water tank has a double-layer structure. The water in the inner tank directly exchanges heat with the flue gas, and the water between the inner tank and the outer tank exchanges heat with the water in the water jacket on the stove. Both are carried out simultaneously, thereby improving the heating efficiency.

[0020] (3) The water jacket of the utility model is arranged on the four walls of the stove, which can fully utilize the heat radiated by the stove, increase the heating area, and improve the heat utilization rate;

[0021] (4) As a heat source auxiliary device, the electric heating device of the utility model can effectively increase the heating effect and can accurately control the heating time and temperature, and is highly practical;

[0022] (5) The stove of the utility model is provided with three ventilation chambers. The grate is used to distribute air to the bottom of the fuel cylinder. The air between the fuel cylinder and the air distribution cylinder enters the fuel cylinder through the ventilation hole to distribute air to the side of the fuel cylinder. The air between the furnace wall and the air distribution cylinder is used to distribute air to the flame generated at the upper part of the fuel cylinder. The three-level air distribution structure is adopted, which has a better combustion-supporting effect, makes the fuel burn more fully, improves thermal efficiency, saves fuel, and reduces environmental pollution. In addition, the third air distribution holes are arranged in staggered sizes, which can disturb the uniformity of the air, so that the airflow can contact the fuel from all directions, thereby improving the completeness of combustion.

[0023] (6) The smoke discharged from the lower part of the fuel cylinder of the utility model can contact the flame again through the smoke return port or the second air distribution hole and burn again, thereby reducing the generation of harmful substances in the smoke and reducing air pollution;

[0024] (7) The air distribution duct of the utility model can further provide oxygen for the smoke to be discharged, and use the flames jumping out of the smoke outlet to further burn, thereby reducing the discharge of pollutants into the air;

[0025] (8) The wind shield ring of the utility model can increase the sealing between the fuel cylinder and the air distribution cylinder, which is conducive to more air entering from the ventilation holes on the fuel cylinder, improving the combustion-supporting effect of the side, and the fire-focusing cylinder can make the flame more concentrated, increase the temperature of the center of the flame, and improve the efficiency of cooking and boiling water; the density of the upper part of the ventilation hole is greater, and it can be staggered with the first air distribution hole at the bottom, which is more conducive to the combustion of the fuel in the upper part of the fuel cylinder and improve the combustion efficiency;

[0026] (9) The gasification core of the utility model can evenly flow the air entering the grate, and the airflow can be directly introduced into the fuel center through the gasification cylinder, further improving the combustion-supporting effect;

[0027] (10) The utility model can be combined with the existing heating system, so that they can work independently without affecting each other, and can also provide assistance to the existing heating system, increasing the heat dissipation area while also increasing the heat source. Especially in rural areas, it can effectively complement the existing heating system and improve the efficiency of emergency support when the gas supply is insufficient or cut off.

[0028] In summary, the utility model can be used alone to utilize the water exchange tank for heating while cooking, and can also be combined with a heating system to effectively complement each other, provide emergency protection or increase the heating effect, and is suitable for heating in rural areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention is described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] Figure 1 This is a schematic cross-sectional structure diagram of Embodiment 1 of the present utility model;

[0031] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of AA;

[0032] Figure 3 This is a schematic cross-sectional structure diagram of the gasification core of Example 1 of the utility model;

[0033] Figure 4 This is a schematic diagram of the structure of Example 2 of the utility model.

[0034] In the figure: 1. heat exchange water tank; 1.1. inner box; 1.11. water inlet; 1.2. outer box; 2. flue gas pipe; 3. stove; 4. water jacket; 4.1. electric heating device; 5. return pipe; 6. water outlet pipe; 7. air distribution ring; 7.1. third air distribution hole; 7.2. reinforced air distribution hole; 7.3. smoke return port; 8. grate; 9. fuel cylinder; 9.1. ventilation hole; 10. air distribution tube; 11. air distribution duct; 12. gasification core; 12.1. gasification plate; 12.2. gasification tube; 12.3. gasification sleeve; 13. wall-mounted boiler; 14. radiator. DETAILED DESCRIPTION

[0035] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and understand the present invention, and are not used to limit the present invention.

[0036] Embodiment 1 Combined cooking and heating device

[0037] like Figure 1 As shown, this embodiment includes a stove 3 and a heat exchange water tank 1 for holding water. The heat exchange water tank 1 and the stove 3 are separately arranged and connected by a pipeline. The stove 3 is used for cooking. The heat exchange water tank 1 holds water. The heat generated during the cooking process is transferred to the heat exchange water tank 1 for heat exchange, so that the heat exchange water tank 1 forms a radiator (same as the function of a radiator) to provide heating.

[0038] The heat exchange water tank 1 comprises an inner box body 1.1 and an outer box body 1.2 sleeved on the outer box body 1.1. The inner box body 1.1 is fixedly arranged at the bottom of the outer box body 1.2. The space between the outer box body 1.2 and the inner box body 1.1 and the space inside the inner box body 1.1 are both water-containing chambers. The inner box body 1.1 is provided with a water outlet 1.11, so that the inner part of the inner box body 1.1 and the inner part of the outer box body 1.2 are partially connected. The inner box body 1.1 is wound with multiple turns of a flue gas pipe 2. The air intake end of the flue gas pipe 2 passes through the inner box body 1.1 and the outer box body 1.2, extends to the outside of the outer box body 1.2, and is detachably connected to the exhaust port of the stove 3. The exhaust end of the flue gas pipe 2 passes through the inner box body 1.1 and extends from the top of the outer box body 1.2 to the outside of the outer box body 1.2.

[0039] The present embodiment specifically adopts the heating furnace of the prior art, that is, the Chinese patent with application number 2023235129296 and the name of a high-efficiency combustion-supporting biomass heating furnace. On this basis, the present embodiment has made improvements in three parts: 1. The structure of the upper smoke collecting box, the lower smoke collecting box and the smoke distribution pipe are removed; 2. The structure of the water jacket is added to the furnace wall; 3. The structure of the air distribution ring 7 is improved; 4. The air distribution duct 11 is added to the position of the smoke exhaust port; 5. The structure of the gasification core 12 is added.

[0040] This paragraph first summarizes the technology of "a highly efficient combustion-supporting biomass heating stove" to facilitate the description and understanding of the four perfect structures. The stove 3 includes a stove body, an air distribution ring 7 fixed in the stove body, a grate 8 fixed on the air distribution ring 7, a fuel cylinder 9 fixed on the grate 8, and an air distribution cylinder 10 fixed on the air distribution ring 7. The stove body is a square structure, which can form a square furnace, which can not only meet the use of various biomass and coal fuels in rural areas, but also meet the use of various biomass molding fuels, especially square honeycomb briquettes fuel with low pollutant emissions. The fuel cylinder 9 is provided with ventilation holes 9.1, and the density of the ventilation holes 9.1 on the fuel cylinder 9 away from the end of the grate 8 is greater than the density of the ventilation holes 9.1 near the end of the grate 8. The hole on the grate 8 is the first air distribution hole, the grate 8 is also provided with a second air distribution hole, and the air distribution ring 7 is provided with a third air distribution hole 7.1. The rest of the structure can be seen in the original application text. The main utility model point of this technology is that three chambers are formed in the furnace body, and the first air distribution hole, the second air distribution hole, and the third air distribution hole 7.1 respectively ventilate and assist combustion to the bottom, side, and top of the three chambers. A wind shield ring is fixedly provided at one end of the air distribution tube 10 close to the fire mouth, the outer edge of the wind shield ring is fixedly connected to the air distribution tube 10, and the inner edge is fixedly connected to the fuel tube 9, so that the second air distribution chamber is more tightly sealed. A fire gathering tube is fixedly provided on the wind shield ring, and a through hole is provided on the tube wall of the fire gathering tube. The upper port area of ​​the fire gathering tube is smaller than the upper port area of ​​the fuel tube 9. The third air distribution hole 7.1 on the air distribution ring 7 is discharged from the through hole on the fire gathering tube to assist combustion of the flame at the top. The above is the prior art and will not be elaborated on.

[0041] 1. In this embodiment, since the smoke needs to be directly introduced into the smoke pipe 2 of the heat exchange water tank 1, the original upper smoke collecting box, lower smoke collecting box and smoke distribution pipe are removed to ensure that all the residual heat in the smoke is heat-exchanged with the water in the heat exchange water tank 1. The air inlet end of the smoke pipe 2 in the heat exchange water tank 1 is directly fixedly connected to the smoke exhaust port of the stove 3.

[0042] 2. In this embodiment, a water jacket 4 is fixedly arranged outside the furnace wall of the stove 3. The water jacket 4 is wrapped around the furnace wall and is used to hold water. A return pipe 5 is fixedly connected to the upper part of the water jacket, and a water outlet pipe 6 is fixedly connected to the lower part, so that the water in the water jacket 4 is connected to the water in the heat exchange water tank 1. The heat generated by the stove 3 itself heats the water in the water jacket 4, and performs heat exchange with the water in the heat exchange water tank 1, so that the temperature of the water in the heat exchange water tank 1 is further increased. An electric heating device 4.1 is fixedly arranged on the water jacket 4 for auxiliary heating. The electric heating device 4.1 of this embodiment adopts a heating rod.

[0043] 3. Figure 2As shown, the present embodiment improves the structure of the air distribution ring 7 as follows: the third air distribution holes 7.1 are arranged in a staggered manner in size. This method can disrupt the regularity of the incoming air, so that the wind energy is evenly dispersed in the third air distribution chamber, which is convenient for the wind to be discharged from the through holes of the fire-gathering port in all directions, and can contact the flame more evenly, thereby improving the combustion-supporting effect. The four corners of the air distribution ring 7 are also provided with reinforced air distribution holes 7.2, and the opening area of ​​the reinforced air distribution holes 7.2 is larger than the opening area of ​​the third air distribution holes 7.1. Since there are ventilation dead corners at the four corners, by setting the reinforced air distribution holes 7.2 and increasing the opening area, the air intake is further increased, thereby improving the combustion-supporting effect. The air distribution ring 7 is also provided with four smoke return ports 7.3, which are respectively located at the center positions of the four sides of the air distribution ring 7. The smoke return ports 7.3 are rectangular structures, and the opening area of ​​the smoke return ports 7.3 is larger than the opening area of ​​the reinforced air distribution holes 7.2. When the fuel is biomass, new fuel needs to be continuously added to the flame after ignition. At this time, some thick smoke will be generated due to incomplete combustion, and the new fuel on the upper layer will prevent the thick smoke from being discharged upward. Part of the thick smoke will be discharged downward through the grate 8. By setting the smoke return port 7.3, the thick smoke will be re-burned as the air enters the combustion chamber again through the second air distribution hole or the third air distribution hole 7.1, thereby reducing harmful substances in the air.

[0044] Fourth, the improvement of the structure of the air distribution pipe 11 in this embodiment is as follows: the air distribution pipe 11 is fixedly provided on the smoke outlet of the stove 3, and a sealing plug is detachably provided at the end of the air distribution pipe 11. The air distribution pipe 11 can be installed optionally. When the fuel is not easy to burn fully, the air distribution pipe 11 can be used to provide air for the smoke outlet for the fourth time. Since the flame will jump to the smoke outlet, the air distribution pipe 11 at the smoke outlet can provide oxygen again, so that the harmful substances can be further fully burned before being discharged, thereby reducing the emission of pollutants.

[0045] 5. If Figure 1 , Figure 3As shown, in this embodiment, a gasification core 12 is added to the grate 8. The gasification core 12 includes a gasification plate 12.1, a gasification cylinder 12.2 and a gasification sleeve 12.3. The gasification plate 12.1 can be square or circular. The gasification plate 12.1 is evenly provided with gasification holes. The area of ​​the gasification plate 12.1 is smaller than the cross-sectional area of ​​the inner cavity of the fuel cylinder 9. The gasification plate 12.1 can be placed on the grate 8 surrounded by the fuel cylinder 9 and positioned by the gravity of the gasification core 12 itself and the gravity of the fuel. A through hole is provided at the center of the gasification plate 12.1, and a gasification cylinder 12.2 is fixed on the through hole. The gasification cylinder 12.2 is provided with gasification holes, and the height of the gasification cylinder 12.2 extends to the center of the fuel cylinder. The gasification sleeve 12.3 is a cylindrical shape with one end sealed, and a round through hole is provided on the sealed end surface for passing through the gasification tube 12.2. The gasification sleeve 12.3 is sleeved on the gasification tube 12.2 and falls on the gasification plate 12.1. The outer wall and the sealed end surface of the gasification sleeve 12.3 are provided with gasification holes. After the airflow enters from the grate 8, it passes through the gasification plate 12.1 to disperse the airflow evenly. A part of the airflow diffuses to the surroundings through the gasification sleeve 12.3, and the other part of the airflow diffuses through the center of the fuel on the gasification tube 12.2, providing sufficient air for the center of the fuel, so that the airflow is all-roundly distributed to the top, middle, bottom and center of the fuel, improving the combustion-supporting effect.

[0046] When using this embodiment, when the existing heating system fails and cannot operate, the device can be used alone for emergency heating, and cooking can be done at the same time. When in use, first add water to the heat exchange water tank 1 and place it at the location where heating is required, then add fuel to the stove 3, and the smoke generated by the combustion of the fuel enters the smoke pipe 2 of the heat exchange water tank 1, and the residual heat in the smoke pipe 2 exchanges heat with the water, and the temperature in the water is dissipated into the air for heating. At the same time, during the combustion of the fuel, the heat emitted by the stove 3 itself heats the water in the water jacket 4, and exchanges heat with the water in the heat exchange water tank 1 through the coupling hot water circulation, further ensuring the temperature of the water in the heat exchange water tank 1 and improving the heating effect. At the same time, the stove can provide air to the fuel in all directions, thereby improving the thermal efficiency of the fuel combustion, and improving the utilization rate of the residual heat, further improving the heating effect.

[0047] Example 2 Multi-heat source complementary heating system

[0048] like Figure 4As shown, this embodiment includes heating equipment and the combined cooking and heating device described in Example 1. The heating equipment refers to an existing heating structure, such as a household wall-mounted boiler 13 and a radiator 14 combined heating structure, or a household wall-mounted boiler and floor heating combined heating structure. The heating equipment of this embodiment adopts the structure of a wall-mounted boiler 13 and a radiator 14, and the water exchange tank 1 of the combined cooking and heating device is fixedly connected to the water inlet pipe and the return pipe of the heating equipment. When the existing heating equipment is insufficient or the weather is too cold, the heat source form can be increased, and common biomass or honeycomb coal can be used as raw materials for heating, which complements the existing heating equipment and provides emergency protection.

[0049] When using this embodiment, when the existing heating equipment is turned on, fuel is added to the stove 3, and heat is exchanged with the water in the water exchange tank 1 through the waste heat of the flue gas and the heat emitted by the stove body. The water exchange tank 1 can be used as an additional set of radiators to dissipate heat, thereby improving the heating effect and allowing cooking.

[0050] It should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments, or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A combined cooking and heating device, characterized in that: Includes a stove and a heat exchange tank for holding water; The heat exchange water tank and the stove are separately arranged, a smoke pipe is fixedly arranged in the heat exchange water tank, an air inlet end of the smoke pipe is detachably connected to a smoke exhaust port of the stove, and an exhaust end of the smoke pipe extends out of the heat exchange water tank; A water jacket is fixedly arranged on the furnace wall of the furnace, and the water jacket is connected with the heat exchange water tank through a return pipe and a water outlet pipe.

2. The combined cooking and heating device according to claim 1, characterized in that: The heat exchange water tank comprises an inner box body and an outer box body sleeved on the inner box body, a water cavity is formed between the outer box body and the inner box body and inside the inner box body, a water outlet connected to the water cavity is provided on the inner box body, a flue gas pipe is fixed in the inner box body, and a return pipe and a water outlet pipe are fixedly connected to the outer box body.

3. The combined cooking and heating device according to claim 2 is characterized in that: The water jacket surrounds the outer wall of the stove, and an electric heating device is fixedly arranged in the water jacket of the stove.

4. The combined cooking and heating device according to any one of claims 1 to 3, characterized in that: The stove comprises a stove body with a smoke exhaust port, an air distribution ring fixed in the stove body, a grate fixed on the air distribution ring, a fuel cylinder fixed on the grate and an air distribution cylinder fixed on the air distribution ring; the fuel cylinder is provided with ventilation holes, the holes on the grate are first air distribution holes, the grate is also provided with second air distribution holes, and the air distribution ring is provided with third air distribution holes; the third air distribution holes are arranged in staggered sizes, and the four corners of the air distribution ring are also provided with reinforced air distribution holes, and the opening area of ​​the reinforced air distribution holes is larger than the opening area of ​​the third air distribution holes.

5. The combined cooking and heating device according to claim 4 is characterized in that: The air distribution ring is also provided with a smoke return port, and the opening area of ​​the smoke return port is larger than the opening area of ​​the enhanced air distribution hole.

6. The combined cooking and heating device according to claim 5, characterized in that: An air distribution duct is fixedly arranged on the smoke exhaust port of the stove, and a sealing plug is detachably arranged on the air distribution duct.

7. The combined cooking and heating device according to claim 6, characterized in that: A wind shield ring is fixedly provided at one end of the air distribution tube close to the fire mouth, the outer edge of the wind shield ring is fixedly connected to the air distribution tube, and the inner edge is fixedly connected to the fuel cylinder; a fire gathering cylinder is fixedly provided on the wind shield ring, a through hole is provided on the cylinder wall of the fire gathering cylinder, and the upper port area of ​​the fire gathering cylinder is smaller than the area of ​​the upper port of the fuel cylinder; the density of the ventilation holes on the fuel cylinder away from the grate is greater than the density of the ventilation holes on the end close to the grate.

8. The combined cooking and heating device according to any one of claims 5 to 7, characterized in that: A gasification core is placed on the grate, and the gasification core comprises a gasification plate placed on the grate, a gasification cylinder fixed on the gasification plate, and a gasification sleeve sleeved on the gasification cylinder. The gasification plate, the gasification cylinder and the gasification sleeve are all provided with gasification holes.

9. A multi-heat source complementary heating system, characterized in that: It comprises a heating device and a combined cooking and heating device as described in any one of claims 1 to 8, wherein a water exchange tank of the combined cooking and heating device is fixedly connected to a water inlet pipe and a water return pipe of the heating device.

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