CN111664476B - Environment-friendly furnace and furnace burning system - Google Patents

Abstract

The present invention discloses an environmentally friendly furnace and a furnace system, the environmentally friendly furnace comprising: an outer furnace body, the outer furnace body is provided with a partition, the partition divides the outer furnace body into a cooking cavity and an installation cavity; an inner furnace body, the inner furnace body is arranged inside the installation cavity, the top of the inner furnace body is connected to the partition, and the furnace of the inner furnace body is connected to the cooking cavity; a first water jacket, the first water jacket is arranged on the furnace wall of the inner furnace body; a heat recovery device, the heat recovery device is arranged at the connection between the inner furnace body and the partition. When the environmentally friendly furnace of the present invention is in use, part of the heat released by the combustion of fuel in the inner furnace body is absorbed by the first water jacket, and the other part rises to the cooking cavity for cooking activities. However, part of this heat will still be lost to the outside of the furnace, and by providing a heat recovery device, this part of the heat lost in the cooking cavity can be recovered, thereby improving the utilization rate of heat and being more energy-saving and environmentally friendly.

Description

Environmentally friendly furnaces and furnace systems

Technical Field

The invention relates to the technical field of burners, and in particular to an environmentally friendly burner and a burner system.

Background Art

Stoves are used to burn wood, straw, coal, etc. In cold areas, such as winter, northern China usually relies on coal stoves to burn coal for heating and cooking. Generally, coal stoves are widely used in small single-family homes in rural areas and small towns.

At present, there are many common problems with cooking stoves on the market, such as incomplete combustion, which causes black smoke from the chimney, seriously affecting the surrounding environment. Or, when the fuel in the stove is insufficient, the food cannot be cooked in time. In particular, although some existing stoves are equipped with heating water jackets, in fact, the design of the water jackets is relatively simple, the heat utilization value of combustion is very low, and most of the heat is directly discharged from the chimney.

Summary of the invention

The invention discloses an environmentally friendly furnace and a furnace system, which solves the problem that although existing furnaces are equipped with heating water jackets, the water jackets are actually simply designed, the heat utilization value of combustion is very low, and most of the heat is directly discharged from the chimney.

According to one aspect of the present invention, an environmentally friendly furnace is disclosed, comprising: an outer furnace body, the outer furnace body being provided with a partition, the partition dividing the outer furnace body into a cooking cavity and an installation cavity; an inner furnace body, the inner furnace body being arranged inside the installation cavity, the top of the inner furnace body being connected to the partition, the furnace chamber of the inner furnace body being connected to the cooking cavity; a first water jacket, the first water jacket being arranged on the furnace wall of the inner furnace body, the first water jacket being used to absorb heat released by the inner furnace body; a heat recovery device, the heat recovery device being arranged at the connection between the inner furnace body and the partition, the heat recovery device being used to absorb heat released by the inner furnace body and the cooking cavity.

Furthermore, the furnace of the inner furnace body is used to burn one or more of the following substances: wood, coal, and biofuel.

Furthermore, the heat recovery device is a heating water tray or a water pipe, the heat recovery device is arranged on the partition, and the heat recovery device is connected to the first water jacket.

Furthermore, the outer furnace body is provided with a cooking opening communicated with the cooking cavity, and an electric heating device is provided at the cooking opening.

Furthermore, a smoke exhaust port is provided on the outer furnace body, the cooking cavity is connected to the smoke exhaust port, a tertiary combustion device is provided in the cooking cavity, the tertiary combustion device is located at the position of the smoke exhaust port, and is used for burning and purifying the exhausted smoke.

Furthermore, it also includes: a smoke exhaust pipe, which is connected to the outer furnace body and communicates with the cooking cavity; and a second water jacket, which is arranged on the inner wall of the smoke exhaust pipe and is used to absorb heat released by the smoke exhaust pipe.

Furthermore, the second water jacket is arranged at the connection between the smoke exhaust pipe and the outer furnace body.

Furthermore, it also includes: a purification chamber, which is arranged on the pipeline of the smoke exhaust duct, and a tertiary combustion device is arranged in the purification chamber.

Furthermore, the tertiary combustion device is an electric heating tube.

Furthermore, the tertiary combustion device is a gas-fired device for spraying fuel into the flue gas and burning it.

Furthermore, the fuel includes one or more of the following substances: coal gas, natural gas, kerosene, and diesel.

Furthermore, a dust removal device is provided, wherein the dust removal device is connected to the smoke exhaust duct.

Furthermore, a damper is provided on the smoke exhaust duct, and the damper is located between the second water jacket and the dust removal device.

Furthermore, the inner furnace body is provided with a secondary combustion hole, the secondary combustion hole is located between the first water jacket and the partition plate, and the secondary combustion hole is used to introduce air into the furnace of the inner furnace body.

Furthermore, an air passage is formed between the outer wall of the inner furnace body, the inner wall of the installation cavity and the partition, the furnace of the inner furnace body is connected with the air passage through the secondary combustion hole, and the air passage is connected with the outside of the outer furnace body.

Furthermore, the outer furnace body is also provided with an air inlet and an air inlet cavity communicated with the air inlet, and the furnace bottom of the inner furnace body is communicated with the air inlet cavity.

Furthermore, grate bars are provided at the bottom of the inner furnace body.

Furthermore, it also includes: an ash receiving box, the shape of which matches the air inlet chamber, the ash receiving box is movably arranged in the air inlet chamber, and the ash receiving box controls the size of the air inlet opening by moving to control the air intake volume.

According to a second aspect of the present invention, a furnace system is disclosed, comprising the above-mentioned environmentally friendly furnace.

When the environmentally friendly stove of the present invention is in use, part of the heat released by the combustion of fuel in the inner furnace body is absorbed by the first water jacket, and the other part rises to the cooking cavity for cooking activities. However, part of this heat will still be lost to the outside of the stove. By arranging a heat recovery device, this part of the heat lost in the cooking cavity can be recovered, thereby improving the utilization rate of heat and being more energy-saving and environmentally friendly.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of an environmentally friendly combustion furnace according to an embodiment of the present invention;

FIG2 is a side view of an environmentally friendly combustion furnace according to an embodiment of the present invention;

FIG3 is a schematic structural diagram of an environmentally friendly furnace according to another embodiment of the present invention;

Legend: 10. Outer furnace body; 11. Partition; 12. Cooking chamber; 13. Air inlet chamber; 14. Cooking port; 15. Electric heating device; 16. Smoke exhaust port; 17. Secondary air inlet port; 18. Secondary air door; 20. Inner furnace body; 21. Secondary combustion hole; 22. Grate bar; 23. Filling port; 30. Air channel; 41. First water jacket; 42. Heat recovery device; 43. Second water jacket; 44. Pipeline; 50. Purification chamber; 51. Tertiary combustion device; 60. Ash box; 70. Dust removal device; 80. Smoke exhaust duct; 81. Air door.

DETAILED DESCRIPTION

The present invention will be further described below in conjunction with the embodiments, but is not limited to the contents of the description.

As shown in Figures 1 and 2, the present invention discloses an environmentally friendly combustion stove, including: an outer furnace body 10, an inner furnace body 20, a first water jacket 41 and a heat recovery device 42, the outer furnace body 10 is provided with a partition 11, the partition 11 divides the outer furnace body 10 into a cooking cavity 12 and an installation cavity; the inner furnace body 20 is arranged inside the installation cavity, the top of the inner furnace body 20 is connected to the partition 11, and the furnace of the inner furnace body 20 is connected to the cooking cavity 12; the first water jacket 41 is arranged on the furnace wall of the inner furnace body 20, and the first water jacket 41 is used to absorb the heat released by the inner furnace body 20; the heat recovery device 42 is arranged at the connection between the inner furnace body 20 and the partition 11, and the heat recovery device 42 is used to absorb the heat released by the inner furnace body 20 and the cooking cavity 12. When the environmentally friendly stove of the present invention is in use, part of the heat released by the combustion of fuel in the inner furnace body 20 is absorbed by the first water jacket 41, and the other part rises to the cooking cavity 12 for cooking activities. However, part of this heat will still be lost to the outside of the stove. By providing a heat recovery device 42, this part of the heat lost in the cooking cavity 12 can be recovered, thereby improving the utilization rate of heat and being more energy-saving and environmentally friendly.

It should be noted that the first water jacket 41 is arranged on the furnace wall of the inner furnace body 20, which means that the first water jacket 41 is arranged on the inner wall or outer wall of the inner furnace body 20, or can be arranged on both the inner wall and the outer wall, so as to better absorb the heat released by the inner furnace body 20.

In the above embodiment, the furnace of the inner furnace body 20 is used to burn one or more of the following materials: wood, coal, and biofuel. The environmentally friendly furnace of the present invention can use wood, coal, and biofuel as fuel, and the range of combustion materials is wide and the cost is low.

In the above embodiment, the heat recovery device 42 is a heating water pan or a water pipe. When the heating water pan is used, the heating water pan is arranged on the partition 11, and the heating water pan is connected to the first water jacket 41. The heating water pan is connected to the first water jacket 41 through a pipe 44. When a water pipe is used, the water pipe is coiled on the partition 11, and the water pipe is connected to the first water jacket 41. The heating water pan or the water pipe is connected to the first water jacket 41 through a pipe 44. The environmentally friendly furnace of the present invention can absorb the heat released by the cooking cavity 12 through the partition 11 by arranging the heating water pan or the water pipe, and arranging the heating water pan on the partition 11, so as to recycle the heat and improve the heat utilization rate.

In the above embodiment, the outer furnace body 10 is provided with a cooking port 14 connected to the cooking cavity 12, an electric heating device 15 is provided at the position of the cooking port 14, and a fire suppression plate is provided above the cooking port 14. The environmentally friendly combustion stove of the present invention is provided with a cooking port 14 on the outer furnace body 10, and cooking activities such as cooking and frying can be performed through the cooking port 14. Since the electric heating device is provided at the position of the cooking port 14, people can use the heat generated by the combustion of the combustion stove when performing cooking activities, and can also use the heat generated by the electric heating device 15 when there is no fuel, and can also use both at the same time, thereby improving the selectivity of use and facilitating the use of users.

In the embodiment shown in FIG1 , a smoke exhaust port 16 is also provided on the outer furnace body 10, and the cooking cavity 12 is connected to the smoke exhaust port 16. A tertiary combustion device 51 is provided in the cooking cavity 12, and the tertiary combustion device 51 is located at the position of the smoke exhaust port 16, and is used to burn and purify the exhausted flue gas. The environmentally friendly combustion furnace of the present invention is provided with a smoke exhaust port 16, and the flue gas generated by the combustion can be discharged through the smoke exhaust port 16. Since there are many harmful substances in the flue gas, the tertiary combustion device 51 is provided at the position of the smoke exhaust port 16 of the cooking cavity 12, and the flue gas can continue to burn at a high temperature through the tertiary combustion device 51, thereby removing harmful substances in the flue gas, such as nitrogen oxides, sulfides, dioxins, etc., to achieve flue gas purification and reduce environmental pollution.

In the above embodiment, it also includes: a smoke exhaust pipe 80 and a second water jacket 43, the smoke exhaust pipe 80 is connected to the outer furnace body 10, and the inside of the smoke exhaust pipe 80 is connected to the cooking cavity 12; the second water jacket 43 is arranged on the inner wall of the smoke exhaust pipe 80, and is used to absorb the heat released by the smoke exhaust pipe 80. The environmentally friendly furnace of the present invention can absorb the heat of the smoke after three combustions by arranging the second water jacket 43 on the smoke exhaust pipe 80, thereby improving the heat utilization rate, thereby avoiding condensation caused by the discharge of high-temperature smoke.

In the above embodiment, the second water jacket 43 is arranged at the connection between the smoke exhaust pipe 80 and the outer furnace body 10. During the specific implementation process, the first water jacket 41, the heat recovery device, and the second water jacket 43 can be connected in sequence, and the water inlet pipe is connected to the first water jacket 41, and the water outlet pipe is connected to the second water jacket 43. This arrangement is convenient for connecting with the heat recovery device 42. The advantage of this arrangement is that it can absorb the heat of the flue gas to the maximum extent and can also reduce the pipeline distance, which can save costs and avoid heat loss caused by too long pipelines.

It should be noted that the first water jacket 41 is welded to the outer side of the inner furnace body 20 and is formed by welding steel plates or winding with pipes. The heat recovery device 42 is a hollow structure welded with steel plates and can also be made of pipes. The second water jacket 43 is an annular water jacket, which is sleeved on the outer wall of the smoke exhaust pipe 80 to increase the heat transfer effect.

In another embodiment as shown in FIG3 , other structures are the same as those of the embodiment shown in FIG1 , except that it further includes: a purification chamber 50, which is arranged on the pipeline of the smoke exhaust pipe 80, and a tertiary combustion device 51 is arranged in the purification chamber 50. The environmentally friendly combustion furnace of the present invention can be more convenient to clean and replace the tertiary combustion device 51 by separately arranging a purification chamber 50 on the smoke exhaust pipe 80 and arranging the tertiary combustion device 51 in the purification chamber 50. In order to allow the tertiary combustion device 51 to fully burn, a damper 81 can be arranged on the smoke exhaust pipe 80, and the damper 81 is located between the second water jacket 43 and the purification chamber 50.

In the two embodiments shown in FIG. 1 and FIG. 3 , the tertiary combustion device 51 can be an electric heating tube, which is in a spiral, annular, straight or other shape, and heats the flue gas by electricity. A gas device can also be used to spray fuel into the flue gas and burn it, wherein the fuel includes one or more of the following substances: coal gas, natural gas, kerosene, and diesel.

In the above embodiment, the dust removal device 70 is connected to the smoke exhaust duct 80, which can reduce the smoke in the smoke and reduce air pollution.

In the embodiment shown in FIG. 1 , a damper 81 is disposed on the smoke exhaust duct 80 , and the damper 81 is located between the second water jacket 43 and the dust removal device 70 .

In the above embodiment, the inner furnace body 20 is provided with secondary combustion holes 21, which are located between the first water jacket 41 and the partition 11, and are provided on the outer periphery of the inner furnace body 20. The secondary combustion holes 21 are used to introduce air into the furnace of the inner furnace body 20, wherein the secondary combustion holes 21 are arranged in 1 to 10 rows. An air passage 30 is formed between the outer wall of the inner furnace body 20, the inner wall of the installation cavity, and the partition 11, and the furnace of the inner furnace body 20 is connected to the air passage 30 through the secondary combustion holes 21. The outer furnace body 10 is provided with a secondary air inlet 17, and the secondary air door 18 is provided on the secondary air inlet 17. The air passage 30 is connected to the outside of the outer furnace body 10 through the secondary air inlet 17, and the air intake is controlled by the secondary air door 18. The environmentally friendly furnace of the present invention is provided with a secondary combustion hole 21 and an air channel 30 to allow external air to enter the air channel 30 through the secondary air inlet 17, enter the secondary combustion hole along the air channel 30, and then enter the furnace of the inner furnace body 20, so that the substances produced by the initial combustion in the inner furnace body 20 are further burned, thereby realizing secondary combustion, which can greatly improve the combustion effect of the furnace.

In the above embodiment, the outer furnace body 10 is further provided with an air inlet and an air inlet cavity 13 connected with the air inlet, and the bottom of the furnace of the inner furnace body 20 is connected with the air inlet cavity 13. The inner furnace body 20 is provided with a filling port 23 connected with the furnace of the inner furnace body 20, and the filling port 23 is arranged through the outer furnace body 10. When in use, fuel can be added to the inner furnace body 20 through the filling port 23. The bottom of the inner furnace body 20 is provided with a grate bar 22. During the initial combustion, the external air enters the inner furnace body 20 from the air inlet and the air inlet cavity 13, so that the material inside the inner furnace body 20 is burned.

In the above embodiment, it also includes: an ash receiving box 60, the shape of the ash receiving box 60 matches the air inlet chamber 13, and the ash receiving box 60 is movably arranged in the air inlet chamber 13. The ash receiving box 60 controls the size of the air inlet opening by moving to control the air intake volume. By setting the ash receiving box 60, while receiving the ashes, the size of the air outlet opening can be controlled by moving to control the air intake volume, which is convenient for control. Of course, in order to facilitate the removal of ashes, the ash receiving box 60 can be a drawer type and/or a gate, flap type.

According to a second aspect of the present invention, a furnace system is disclosed, comprising the above-mentioned environmentally friendly furnace.

Obviously, the above-mentioned embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the embodiments here. Any obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims (8)

1. An environmentally friendly combustion furnace, characterized in that it comprises: An outer furnace body (10), the outer furnace body (10) being provided with a partition (11), the partition (11) dividing the outer furnace body (10) into a cooking cavity (12) and an installation cavity; an inner furnace body (20), the inner furnace body (20) being arranged inside the installation cavity, the top of the inner furnace body (20) being connected to the partition plate (11), and the furnace of the inner furnace body (20) being in communication with the cooking cavity (12); a first water jacket (41), the first water jacket (41) being arranged on the furnace wall of the inner wall of the inner furnace body (20), the first water jacket (41) being used to absorb heat released by the inner furnace body (20); a heat recovery device (42), the heat recovery device (42) being arranged at a connection between the inner furnace body (20) and the partition plate (11), the heat recovery device (42) being used to absorb heat released by the inner furnace body (20) and the cooking cavity (12); The heat recovery device (42) is a heating water tray or a water pipe, the heat recovery device (42) is arranged on the partition (11), and the heat recovery device (42) is in communication with the first water jacket (41); The outer furnace body (10) is provided with a cooking opening (14) which is in communication with the cooking cavity (12); an electric heating device (15) is provided at the cooking opening (14); The outer furnace body (10) is also provided with a smoke exhaust port (16), the cooking cavity (12) is in communication with the smoke exhaust port (16), a tertiary combustion device (51) is provided in the cooking cavity (12), the tertiary combustion device (51) is located at the position of the smoke exhaust port (16), and is used to burn and purify the exhausted smoke; a smoke exhaust pipe (80), the smoke exhaust pipe (80) being connected to the outer furnace body (10), and the inside of the smoke exhaust pipe (80) being in communication with the cooking cavity (12); A second water jacket (43), the second water jacket (43) is arranged on the inner wall of the smoke exhaust pipe (80) and is used to absorb heat released by the smoke exhaust pipe (80). 2. The environmentally friendly burner according to claim 1, characterized in that: The furnace of the inner furnace body (20) is used to burn one or more of the following substances: wood, coal, and biofuel. 3. The environmentally friendly burner according to claim 1, characterized in that: The second water jacket (43) is arranged at the connection between the smoke exhaust pipe (80) and the outer furnace body (10). 4. The environmentally friendly combustion furnace according to claim 3, characterized in that it also includes: A purification chamber (50), wherein the purification chamber (50) is arranged on the pipeline of the smoke exhaust duct (80), and a tertiary combustion device (51) is arranged in the purification chamber (50). 5. The environmentally friendly burner according to claim 1 or 4, characterized in that: The tertiary combustion device (51) is an electric heating tube. 6. The environmentally friendly burner according to claim 1 or 4, characterized in that: The tertiary combustion device (51) is a gas combustion device, used for spraying fuel into the flue gas for combustion; the fuel includes one or more of the following substances: coal gas, natural gas, kerosene, and diesel. 7. The environmentally friendly burner according to claim 1, characterized in that: The inner furnace body (20) is provided with a secondary combustion hole (21), the secondary combustion hole (21) is located between the first water jacket (41) and the partition plate (11), and the secondary combustion hole (21) is used to introduce air into the furnace of the inner furnace body (20); An air passage (30) is formed between the outer wall of the inner furnace body (20), the inner wall of the installation cavity and the partition plate (11); the furnace of the inner furnace body (20) is connected to the air passage (30) through the secondary combustion hole (21); and the air passage (30) is connected to the outside of the outer furnace body (10). 8. A furnace system, characterized by comprising the environmentally friendly furnace according to any one of claims 1 to 7.