CN112303668A - Secondary air supply heating stove - Google Patents

Abstract

The invention relates to the technical field of heating furnaces, and provides a secondary air supply heating furnace which comprises a furnace body, wherein the furnace body comprises an inner container and an outer container, an interlayer water jacket is formed between the inner container and the outer container, a combustion chamber and a heating chamber are arranged in the inner container, the combustion chamber is communicated with the heating chamber through a fire hole, a heating water jacket assembly communicated with the interlayer water jacket is arranged in the heating chamber, a furnace core is arranged in the combustion chamber, a burner is arranged at the top of the furnace core, a grate is arranged at the bottom of the furnace core, an ash collecting cavity is arranged below the grate and is communicated with the external environment, a primary air supply cavity is formed between the furnace core and the inner wall of the combustion chamber, and a secondary air supply cavity is arranged; the primary air supply cavity is respectively communicated with the dust collecting cavity and the secondary air supply cavity. The invention limits the combustion of fuel in a limited space by arranging the furnace core, enables high-temperature flue gas to be combusted secondarily by arranging the primary air supply cavity and the secondary air supply cavity, preheats air through the primary air supply cavity, has better secondary combustion effect and improves the heat energy utilization rate.

Description

Secondary air supply heating stove

Technical Field

The invention relates to the technical field of heating furnaces, in particular to a secondary air supply heating furnace.

Background

The heating stove is also called heating stove, it is a traditional heating stove, it is especially widely used in the cold areas (such as northeast, Xinjiang, Tibet, etc.) in winter, its principle is to use the combustion chamber in the stove body to burn the fuel and thus heat the water in the water jacket of the stove body interlayer, after the water is heated to a certain extent, introduce the hot water into the room and radiate the heat through the devices such as the air-cooling fin, etc., in order to realize the heating, the water heats again in the heating water jacket flowing into the stove body afterwards, thus form a circulation.

In the prior art, there are various types of heating stoves, such as a biomass heating and cooking stove disclosed in CN2013102502313 and a biomass briquette fuel cooking and heating stove disclosed in CN2010202035445, both of which disclose that a combustion chamber is provided to burn fuel, and the generated heat is introduced into the heating chamber to heat the water jacket, so as to heat the water in the water jacket. However, the combustion chambers of the two heating stoves have large space and cannot collect heat, and the heat may be dissipated in the process of being diffused all around, so that the heat actually entering the heating chamber is less, thereby causing waste of heat energy and low utilization rate of heat energy.

Content of application

The invention aims to provide a secondary air supply heating furnace, which is provided with a furnace core in a combustion chamber, so that fuel is combusted in a limited space in the furnace core, and heat as much as possible can enter a heating chamber. In addition, through setting up air feed chamber and secondary air feed chamber once to carry out the secondary air feed in order to realize the postcombustion to the combustor, further improve heat utilization rate.

The embodiment of the invention is realized by the following technical scheme:

a secondary air supply heating stove comprises a stove body, wherein the stove body comprises an inner container and an outer container, an interlayer water jacket is formed between the inner container and the outer container, a combustion chamber and a heating chamber are arranged in the inner container, the combustion chamber is communicated with the heating chamber through a fire hole, a heating water jacket assembly communicated with the interlayer water jacket is arranged in the heating chamber, a stove core is arranged in the combustion chamber, a burner is arranged at the top of the stove core, a stove grate is arranged at the bottom of the stove core, an ash collecting cavity is arranged below the stove grate and is communicated with the external environment, a primary air supply cavity is formed by the stove core and the inner wall of the combustion chamber, and a secondary air supply cavity is arranged at the periphery of the burner; the primary air supply cavity is communicated with the dust collecting cavity and the secondary air supply cavity respectively.

Through the aforesaid setting, add fuel to the stove core inside and ignite when using earlier, the air of external environment gets into once air feed chamber through the ash collecting chamber this moment, the heat partly of fuel burning production transmits to once air feed chamber through the wall of stove core this moment, thereby preheat the air of once air feed intracavity, air admission secondary air feed chamber after preheating afterwards, the high temperature that produces when fuel burning this moment upwards diffuses to the combustor when, the hot-air of secondary air feed intracavity gets into the inside and high temperature flue gas intensive mixing of combustor from the ventilation hole that sets up on the combustor, and then make the high temperature flue gas take place the postcombustion, flue gas and the heat that final burning produced heat the heating jacket subassembly in diffusing to the heating chamber through the burner, realize the heating. In view of the above, on one hand, the invention limits the fuel to burn in the limited space by arranging the furnace core to prevent the heat from spreading everywhere as much as possible, so that as much heat as possible enters the heating chamber, and the heat energy utilization rate is improved; on the other hand, the secondary air supply is realized to the combustor by arranging the primary air supply cavity and the secondary air supply cavity, so that high-temperature flue gas generated during fuel combustion is fully mixed with oxygen in air again, secondary combustion is realized, and the heat energy utilization rate is further improved; simultaneously, the air through the primary air supply cavity can be heated by the heat penetrating out of the furnace core wall, so that the air is preheated, and the secondary combustion effect is better.

Optionally, the heating water jacket assembly comprises a turnover baffle, a heating water jacket I and a heating water jacket II, the heating water jacket I and the heating water jacket II are communicated with the interlayer water jacket, the heating water jacket II is arranged between the heating water jacket I and the inner side wall of the inner container, and the heating water jacket II is obliquely arranged.

Optionally, the higher end of the heating water jacket II is close to the heating water jacket I, and a gap is reserved between the lower end of the heating water jacket II and the inner side wall of the inner container.

Optionally, a plurality of heating pipes are arranged between the heating water jacket I and the inner side wall of the inner container, and the plurality of heating pipes are communicated with the interlayer water jacket; the heating pipes are respectively positioned between the heating water jacket I and the heating water jacket II and between the heating water jacket II and the inner side wall of the inner container.

Optionally, the heating water jacket assembly further comprises a heating water jacket III communicated with the interlayer water jacket, the heating water jacket III is disposed between the heating water jacket I and the combustion chamber, the heating water jacket III comprises a vertical portion and a horizontal portion, the vertical portion is tightly attached to the side wall of the combustion chamber, and the bottom of the burner is connected with the furnace core after penetrating through the horizontal portion.

Optionally, a primary air supply port is formed in the side wall of the furnace core, the primary air supply port is arranged in an inclined manner, and the interior of the furnace core is communicated with the primary air supply cavity through the primary air supply port.

Optionally, the furnace core is of a circular truncated cone structure with a small upper part and a large lower part.

Optionally, the top of the furnace body is provided with a first furnace mouth and at least one second furnace mouth, the first furnace mouth is right opposite to the fire mouth, the second furnace mouth is right opposite to the heating chamber, and furnace mouth covers are arranged on the first furnace mouth and the second furnace mouth.

Optionally, a bearing part is arranged on the top surface of the furnace core, and the bottom of the burner is borne on the top surface of the bearing part.

Optionally, a reinforcing rib is arranged between the inner container and the outer container.

The technical scheme of the embodiment of the invention at least has the following advantages and beneficial effects:

1. the invention limits the fuel to burn in the limited space by arranging the furnace core in the combustion chamber, so as to prevent the heat from spreading everywhere as much as possible, and to ensure that as much as possible of the heat enters the heating chamber, thereby improving the heat utilization rate.

2. According to the invention, the primary air supply cavity and the secondary air supply cavity are arranged to realize secondary air supply to the combustor, so that high-temperature flue gas generated during fuel combustion is fully mixed with oxygen in air again, secondary combustion is realized, and the heat energy utilization rate is further improved; simultaneously, the air through the primary air supply cavity can be heated by the heat penetrating out of the furnace core wall, so that the air is preheated, and the secondary combustion effect is better.

3. According to the invention, the heating water jacket II is additionally arranged between the heating water jacket I and the inner side wall of the inner container, so that when high-temperature flue gas flows upwards between the heating water jacket I and the inner side wall of the inner container, as much high-temperature flue gas as possible is contacted with the heating water jacket II to realize heat exchange, thereby improving the utilization rate of heat energy.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a heating stove provided by an embodiment of the invention;

FIG. 2 is a schematic view of an internal structure of a furnace body according to an embodiment of the present invention;

FIG. 3 is a sectional view of a furnace body according to an embodiment of the present invention;

FIG. 4 is a top view of a combustion chamber provided by an embodiment of the present invention.

Icon: 1-inner container, 2-outer container, 3-interlayer water jacket, 4-combustion chamber, 5-heating chamber, 6-fire hole, 7-smoke exhaust pipe, 8-water return hole, 9-water outlet, 10-explosion-proof valve, 11-furnace core, 1101-bearing part, 12-burner, 13-grate, 14-ash collecting cavity, 15-ash collecting drawer, 16-primary air supply cavity, 17-secondary air supply cavity, 18-baffle, 19-heating water jacket I, 20-heating water jacket II, 21-ash cleaning door, 22-heating pipe, 23-heating water jacket III, 2301-vertical part, 2302-horizontal part, 24-primary air supply hole, 25-first furnace mouth, 26-second furnace mouth, 27-furnace mouth cover, 28-reinforcing rib, 29-bottom plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of this application is used, the description is merely for convenience and simplicity of description, and it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

Referring to fig. 1 to 4, a secondary air supply heating stove comprises a stove body, the stove body comprises an inner container 1 and an outer container 2, an interlayer water jacket 3 is formed between the inner container 1 and the outer container 2, a combustion chamber 4 and a heating chamber 5 are arranged in the inner container 1, the combustion chamber 4 is communicated with the heating chamber 5 through a fire hole 6, and a heating water jacket assembly communicated with the interlayer water jacket 3 is arranged in the heating chamber 5; meanwhile, one side of the furnace body is provided with a smoke exhaust pipe 7, the smoke exhaust pipe 7 is communicated with the heating chamber 5 to exhaust smoke, the furnace body is also provided with a water return port 8 and a water outlet 9 which are communicated with the interlayer water jacket 3, wherein the water return ports 8 can be but are not limited to two and are arranged at the top of the furnace body; similarly, the number of the water outlets 9 may also be, but is not limited to, two, and the water outlets are disposed below the side wall of the outer container 2 of the furnace body, and the side wall of the outer container 2 is provided with an explosion-proof valve 10 communicated with the interlayer water jacket 3, for releasing pressure when the internal pressure of the interlayer water jacket 3 is too high, which is not described in detail in the foregoing structure in the prior art. However, the combustion chamber 4 in the prior art has a large space, and heat generated during fuel combustion is diffused all around, so that part of the heat is not introduced into the heating chamber 5, and thus the utilization rate of heat energy is low.

In order to solve the problem, a furnace core 11 is arranged inside the combustion chamber 4, a burner 12 is arranged at the top of the furnace core 11, a grate 13 is arranged at the bottom of the furnace core 11, an ash collecting cavity 14 is arranged below the grate 13, the ash collecting cavity 14 is communicated with the external environment, and a push-and-pull ash collecting drawer 15 is arranged in the ash collecting cavity 14, so that ash can be cleaned at the later stage conveniently, the amount of air entering the ash collecting cavity 14 can be controlled, and the effect of adjusting the fire power is achieved to a certain extent. A certain gap is reserved between the furnace core 11 and the inner wall of the combustion chamber 4 to form a primary air supply cavity 16, and a secondary air supply cavity 17 is arranged on the periphery of the combustor 12, namely, the rest parts of the whole combustor 12 except an outlet corresponding to the fire hole 6 are positioned in the secondary air supply cavity 17; the primary air supply cavity 16 is respectively communicated with the dust collecting cavity 14 and the secondary air supply cavity 17. In the present embodiment, the primary air supply chamber 16 is formed by: the bottom of the furnace core 11 is provided with a bottom plate 29 for supporting the furnace core 11, the bottom plate 29 is provided with an opening communicated with the inside of the furnace core 11, four corners of the bottom plate 29 are of a chamfer structure, the cross section of the furnace core 11 is in a regular octagon shape, so that after the furnace core is installed in the combustion chamber 4, four surfaces of the furnace core 11 are attached to the wall of the combustion chamber 4, gaps are formed between the other four surfaces and the combustion chamber 4, namely, the primary air supply cavity 16 is formed, and the primary air supply cavity 16 is communicated with the ash collection cavity 14 through a gap formed by the chamfer structure on the bottom plate 29. Of course, the manner of forming the primary air supply chamber 16 is not limited to the above-described manner.

Through the arrangement, when in use, fuel is added into the furnace core 11 and ignited, and ash generated during fuel combustion directly falls into the ash collecting cavity 14 from the grate 13, so that the ash can be cleaned conveniently in the later period. At the fuel combustion initial stage, the air of external environment gets into once air feed chamber 16 through ash collecting cavity 14, the heat that fuel combustion produced this moment is partly transmitted to once air feed chamber 16 through the wall of wick 11, thereby preheat the air in once air feed chamber 16, air after preheating gets into secondary air feed chamber 17 afterwards, the high temperature that produces when fuel combustion this moment upwards diffuses to combustor 12 during, the hot-air in secondary air feed chamber 17 gets into combustor 12 inside and high temperature flue gas intensive mixing from the ventilation hole that sets up on combustor 12, and then make the high temperature flue gas take place the postcombustion, flue gas and the heat that final burning produced diffuse to heating chamber 5 in through burner 6 and heat the heating jacket subassembly, realize the heating. As can be seen from the above, in one aspect, the present invention limits the combustion of fuel in a limited space by arranging the furnace core 11 to prevent heat from spreading around as much as possible, so that as much heat as possible enters the heating chamber 5, thereby improving the heat energy utilization rate; on the other hand, the secondary air supply to the combustor 12 is realized by arranging the primary air supply cavity 16 and the secondary air supply cavity 17, so that high-temperature flue gas generated during fuel combustion is fully mixed with oxygen in air again, secondary combustion is realized, and the heat energy utilization rate is further improved; meanwhile, the air passing through the primary air supply cavity 16 can be heated by the heat penetrating out of the wall of the furnace core 11, so that the air is preheated, and the secondary combustion effect is better.

Meanwhile, considering that the water jackets of the heating furnaces in the prior art are all vertically arranged, when the high-temperature flue gas flows through the channel of the heating chamber 5, the contact area with the water jackets is small, and especially when the high-temperature flue gas flows upwards, most of the flue gas is directly discharged from the smoke discharge pipe 7 without contacting with any structure, so that a large amount of heat is wasted, and the heat utilization rate is low. In order to solve the problem, the heating water jacket assembly of the embodiment comprises a reversible baffle plate 18, a heating water jacket I19 and a heating water jacket II20, wherein the function of the baffle plate 18 is the same as that in the prior art, as can be seen from fig. 3, the baffle plate 18 is turned to different states so that high-temperature flue gas flows through different channels, thereby realizing the random switching between the heating and cooking functions, the baffle plate 18 is turned to the vertical state when the heating function is performed, so that the high-temperature flue gas flows through the channel between the heating water jacket I19 and the combustion chamber 4, and the baffle plate 18 is turned to the horizontal state when the cooking is performed, and at the moment, the high-temperature flue gas directly flows from the channel above the heating water jacket I19 to the smoke exhaust pipe 7. Meanwhile, the heating water jacket I19 and the heating water jacket II20 are both communicated with the interlayer water jacket 3, the heating water jacket II20 is arranged between the heating water jacket I19 and the inner side wall of the inner container 1, and the heating water jacket II20 is obliquely arranged.

Through the arrangement, high-temperature flue gas generated by combustion of fuel in the combustion chamber 4 flows out of the fire hole 6 to the heating chamber 5, when water in the interlayer water jacket 3 needs to be heated so as to realize a heating function, the baffle plate 18 is turned to be in a vertical state, the flue gas flows downwards through a channel between the heating water jacket I19 and the combustion chamber 4 at the moment, then flows upwards through a channel between the heating water jacket I19 and the inner side wall of the liner 1, the high-temperature flue gas fully contacts with the heating water jacket II20 in the upward flowing process, so that more high-temperature flue gas is subjected to heat exchange, and finally, the high-temperature flue gas flowing through the heating water jacket II20 is discharged from the smoke exhaust pipe 7. Therefore, in the embodiment, more high-temperature flue gas exchanges heat with the heating water jacket II20 by additionally arranging the heating water jacket II20, so that the utilization rate of heat energy is improved compared with the prior art.

In addition, considering that the flow speed of the high-temperature flue gas tends to be fast, in order to increase the resistance of the high-temperature flue gas in the flow process. The higher one end of heating water jacket II20 is close to heating water jacket I19, makes the clearance between heating water jacket I19 and the heating water jacket II20 be big end down's structure through this setting to form the negative pressure and be used for further increasing the resistance in order to slow down the velocity of flow of high temperature flue gas, thereby make the contact of heating water jacket II20 that high temperature flue gas can be more abundant, make the effect of heat exchange better. On the other hand, consider that there are also often a large amount of dust and impurity in the high temperature flue gas, and dust impurity often can pile up in the junction of exhaust pipe 7 and inner bag 1. Therefore, in order to facilitate the dust and impurities to fall into the bottom of the heating chamber 5 during the later ash removal, in the embodiment, a gap is reserved between the lower end of the heating water jacket II20 and the inner side wall of the inner container 1. The clearance is used for dust impurities to fall into the bottom of the heating chamber 5 when ash is removed. It should be noted that the gap should not be too large, so as to avoid too much high temperature flue gas from directly flowing through the gap and then being discharged from the smoke exhaust pipe 7. And an ash removal door 21 is arranged below the side wall of the inner container 1, so that the ash removal door 21 can be conveniently and directly opened to remove ash in the heating chamber 5 in the later period.

Besides, in addition to adding the heating water jacket II20 to improve the heat exchange effect, in the embodiment, a plurality of heating pipes 22 are further arranged between the heating water jacket I19 and the inner side wall of the liner 1, and the plurality of heating pipes 22 are communicated with the interlayer water jacket 3; the heating pipes 22 are respectively positioned between the heating water jacket I19 and the heating water jacket II20, between the heating water jacket II20 and the inner side wall of the inner container 1, i.e. one part of the heating pipes 22 is positioned between the heating water jacket I19 and the heating water jacket II20, and the other part of the heating pipes 22 is positioned between the heating water jacket II20 and the inner container 1. By additionally arranging the heating pipe 22, the high-temperature flue gas is subjected to heat exchange with the heating water jacket II20 and also subjected to heat exchange with the heating pipe 22 in the upward flowing process, so that more flue gas is subjected to heat exchange, and the utilization rate of heat energy is further improved.

On the other hand, in order to make the heat in the combustion chamber 4 sufficiently utilized, it is considered that the heat in the vicinity of the combustion chamber 4 is large and the temperature is high in some cases when the fuel is actually combusted. The heating water jacket assembly further comprises a heating water jacket III23 communicated with the interlayer water jacket 3, a heating water jacket III23 is arranged between the heating water jacket I19 and the combustion chamber 4, as can be seen in the attached drawing of figure 3, the heating water jacket III23 is L-shaped, specifically, the heating water jacket III23 comprises a vertical part 2301 and a horizontal part 2302, the vertical part 2301 is tightly attached to the side wall of the combustion chamber 4, and the bottom of the burner 12 is connected with the furnace core 11 after passing through the horizontal part 2302. It should be noted that, in order to save material and improve heat transfer efficiency, one side wall of the vertical portion 2301 of the heating water jacket III23 is used as a side wall of the combustion chamber 4, and the bottom surface of the horizontal portion 2302 is used as the top surface of the combustion chamber 4. In actual use, a part of heat generated when fuel is burned in the furnace core 11 is directly transferred to the vertical portion 2301 of the heating water jacket III23, so as to improve the heat energy utilization rate. Meanwhile, in the process that the high-temperature flue gas flows downwards, part of the flue gas exchanges heat with the heating water jacket III23, so that the heat energy utilization rate is further improved. In addition, since the high temperature flue gas inside the burner 12 can be post-combusted after being mixed with the air provided by the secondary air supply chamber 17, the temperature at the burner 12 is also quite high, and the heat generated by the secondary combustion of the high temperature flue gas directly exchanges heat with the water inside the horizontal part 2302 by directly passing the burner 12 through the horizontal part 2302 of the heating water jacket III23, so that the heat energy utilization rate is further improved, and the heating process is more efficient.

In order to facilitate better combustion of the fuel in the core 11, it is ensured that the core 11 has sufficient oxygen inside. In this embodiment, a primary air supply port 24 is formed in a side wall of the furnace core 11, the primary air supply port 24 is obliquely arranged, and the interior of the furnace core 11 is communicated with the primary air supply chamber 16 through the primary air supply port 24. Through the arrangement, outside air enters the furnace core 11 from the grate 13, and preheated air in the primary air supply cavity 16 can also enter the furnace core 11 through the primary air supply opening 24, so that the air can be mixed with high-temperature smoke flowing upwards on the basis of increasing the oxygen content in the furnace core 11, and secondary combustion can be realized.

In this embodiment, in order to make the flame and the high temperature flue gas generated during the combustion of the fuel better gather toward the burner 12, the inside of the furnace core 11 has a circular truncated cone structure with a small top and a large bottom, and the diameter of the top of the furnace core 11 at the bottom of the burner 12 is equal, so as to ensure that all the flame and the flue gas can pass through the burner 12 as much as possible.

In this embodiment, in order to realize the cooking function for the heating, the top of the oven body is provided with a first oven opening 25 and at least one second oven opening 26, the first oven opening 25 is aligned with the fire opening 6, the second oven opening 26 is aligned with the heating chamber 5, and both the first oven opening 25 and the second oven opening 26 are provided with oven openings 27. When cooking is performed, the furnace door 27 is taken out, the cooking vessel is placed on the first furnace opening 25 and the second furnace opening 26, and cooking is performed, and the furnace door 27 is used for covering the first furnace opening 25 and the second furnace opening 26 during heating, so that heat is prevented from flowing out from the furnace openings as much as possible. Meanwhile, the second furnace mouth 26 can be used as an ash cleaning mouth besides being used for cooking, and when ash in the heating chamber 5 is cleaned in the later period, ash cleaning operation can be directly carried out through the second furnace mouth 26, so that the ash cleaning process is more convenient.

In this embodiment, considering that the burner 12 has a limited life under a high temperature environment, in order to facilitate replacement of the burner 12 when damaged, the top surface of the furnace core 11 is provided with a supporting portion 1101, and the bottom of the burner 12 is supported on the top surface of the supporting portion 1101, so that the burner 12 can be directly placed on the supporting portion 1101 during installation without performing a fixing operation such as welding.

In addition, it is considered that the water in the jacket water jacket 3 generates a large force on the inner and outer liners 1 and 2 when the water is injected into the jacket water jacket 3 and the water in the jacket water jacket 3 is subsequently heated. Therefore, in order to improve the structural strength of the inner liner 1 and the outer liner 2, a rib 28 is provided between the inner liner 1 and the outer liner 2 to share the force generated by the water in the water jacket 3.

In order to better understand the operation of the present embodiment, the operation of the heating stove will be further described.

Firstly, when heating is carried out, water is injected into the interlayer water jacket 3 through the water return port 8, then fuel is placed in the furnace core 11 and ignited, at the moment, the baffle plate 18 is turned to be in a vertical state, high-temperature flue gas generated by fuel combustion flows upwards in the furnace core 11 to the burner 12, air preheated by the primary air supply cavity 16 enters the burner 12 from the air vent of the burner 12 to be mixed with the high-temperature flue gas to generate secondary combustion, the high-temperature flue gas generated after the secondary combustion enters the heating chamber 5 and flows downwards from a channel between the heating water jacket I19 and the heating water jacket III23, and the heating water jacket I19 and the heating water jacket III23 are heated at the same time.

Then, the high-temperature flue gas turns after passing through the bottom of the heating water jacket I19, and flows upwards from the channel between the heating water jacket I19 and the inner side wall of the liner 1, at this time, part of the high-temperature flue gas continues to heat the heating water jacket I19, most of the high-temperature flue gas exchanges heat with the heating water jacket II20 and the heating pipe 22, and finally the flue gas is discharged through the smoke discharge pipe 7. After the water in the interlayer water jacket 3 is heated to a certain degree, the water outlet 9 is opened, hot water is introduced into the indoor heating radiating fins through the water outlet pipeline, and then the hot water enters the interlayer water jacket 3 from the water return port 8 through the water return pipeline, so that the heating circulation work is realized.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a secondary air feed heating stove, includes the furnace body, the furnace body includes inner bag and outer courage, the inner bag with form the intermediate layer water jacket between the outer courage, inside combustion chamber and the heating chamber of being equipped with of inner bag, the combustion chamber with communicate through the burner between the heating chamber, inside being equipped with of heating chamber with the heating jacket subassembly, its characterized in that of intermediate layer water jacket intercommunication: a furnace core is arranged in the combustion chamber, a burner is arranged at the top of the furnace core, a grate is arranged at the bottom of the furnace core, an ash collecting cavity is arranged below the grate and is communicated with the external environment, a primary air supply cavity is formed on the inner walls of the furnace core and the combustion chamber, and a secondary air supply cavity is arranged at the periphery of the burner; the primary air supply cavity is communicated with the dust collecting cavity and the secondary air supply cavity respectively.

2. A secondary air-supply heating stove according to claim 1, characterized in that: the heating water jacket assembly comprises a turnover baffle, a heating water jacket I and a heating water jacket II, the heating water jacket I and the heating water jacket II are communicated with the interlayer water jacket, the heating water jacket II is arranged between the heating water jacket I and the inner side wall of the inner container, and the heating water jacket II is obliquely arranged.

3. A secondary air-supply heating stove according to claim 2, characterized in that: the higher end of the heating water jacket II is close to the heating water jacket I, and a gap is reserved between the lower end of the heating water jacket II and the inner side wall of the inner container.

4. A secondary air-supply heating stove according to claim 2, characterized in that: a plurality of heating pipes are arranged between the heating water jacket I and the inner side wall of the inner container, and the heating pipes are communicated with the interlayer water jacket; the heating pipes are respectively positioned between the heating water jacket I and the heating water jacket II and between the heating water jacket II and the inner side wall of the inner container.

5. A secondary air-supply heating stove according to claim 2, characterized in that: the heating water jacket assembly further comprises a heating water jacket III communicated with the interlayer water jacket, the heating water jacket III is arranged between the heating water jacket I and the combustion chamber, the heating water jacket III comprises a vertical part and a horizontal part, the vertical part is tightly attached to the side wall of the combustion chamber, and the bottom of the combustor is connected with the furnace core after penetrating through the horizontal part.

6. A secondary air-supply heating stove according to claim 1, characterized in that: the side wall of the furnace core is provided with a primary air supply port, the primary air supply port is obliquely arranged, and the interior of the furnace core is communicated with the primary air supply cavity through the primary air supply port.

7. A secondary air-supply heating stove according to claim 1, characterized in that: the furnace core is internally in a round platform structure with a small upper part and a big lower part.

8. A secondary air-supply heating stove according to claim 1, characterized in that: the top of the furnace body is provided with a first furnace mouth and at least one second furnace mouth, the first furnace mouth is right opposite to the fire hole, the second furnace mouth is right opposite to the heating chamber, and furnace mouth covers are arranged on the first furnace mouth and the second furnace mouth.

9. A secondary air-supply heating stove according to claim 1, characterized in that: the top surface of the furnace core is provided with a bearing part, and the bottom of the burner is borne on the top surface of the bearing part.

10. A secondary air-supply heating stove according to claim 1, characterized in that: and a reinforcing rib is arranged between the inner container and the outer container.

Images