CN213599423U - Secondary combustion structure of heating stove - Google Patents

Abstract

The utility model relates to the technical field of heating furnaces, and discloses a secondary combustion structure of a heating furnace, which comprises a furnace body, wherein a combustion chamber is arranged inside the furnace body, a furnace core is arranged inside 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 at the periphery of the burner; the primary air supply cavity is respectively communicated with the dust collecting cavity and the secondary air supply cavity. The utility model 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; simultaneously, through setting up primary air feed chamber and secondary air feed chamber, realize to the combustor secondary air feed in order to carry out the postcombustion, further improve heat utilization rate.

Description

Secondary combustion structure of heating stove

Technical Field

The utility model relates to a heating stove technical field particularly, relates to a postcombustion structure of heating stove.

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.

The prior art heating stoves are various in types, such as a biomass heating and cooking stove disclosed in application No. CN2013102502313, which discloses a combustion chamber arranged to burn fuel, and introducing the generated heat into the heating chamber to heat a water jacket, so as to heat water in the water jacket. However, the above heating stove has a large combustion chamber space, and cannot collect heat, and the heat may be dissipated in the process of diffusing 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; meanwhile, when the fuel is combusted in the combustion chamber, a large amount of combustible and harmful smoke is generated and is finally discharged from the smoke exhaust pipe, so that the environment is polluted, a large amount of heat energy is taken away, and the heat efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a postcombustion structure of heating stove, it is through addding the wick in the combustion chamber for fuel burns in the inside finite space of wick, thereby makes as much as possible heat can get into the 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 utility model discloses a realize through following technical scheme:

a secondary combustion structure of a heating stove comprises a stove body, wherein a combustion chamber is arranged inside the stove body, a stove core is arranged inside the combustion chamber, a burner is arranged at the top of the stove core, a grate is arranged at the bottom of the stove 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 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 earlier when using, 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, the flue gas and the heat that final burning produced diffuse away through the top of combustor. Therefore, on one hand, the utility model 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 utility model realizes the secondary air supply to the burner by arranging the primary air supply cavity and the secondary air supply cavity, so that the high-temperature flue gas generated during the combustion of the fuel is fully mixed with the oxygen in the air again, the 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, 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 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.

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

Optionally, a support member is arranged at the bottom of the grate, the center of the grate is rotatably connected with the support member, and the grate is detachably connected with the bottom of the furnace core through the support member;

the furnace grate is characterized by further comprising a driving column, wherein one end of the driving column is connected with the outer edge of the furnace grate, and the other end of the driving column extends out of the furnace body.

Optionally, the grate comprises a plurality of grate rings with diameters increasing from inside to outside, and a reinforcing rib is arranged between every two adjacent grate rings.

Optionally, the top surface of the grate ring is provided with ash removal teeth.

The utility model discloses technical scheme has following advantage and beneficial effect at least:

the utility model 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, so that as much heat as possible enters the heating chamber, and the heat energy utilization rate is improved; meanwhile, secondary air supply to the combustor is realized 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.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required 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 present invention;

fig. 2 is a schematic view of an internal structure of a heating stove provided by the embodiment of the present invention;

fig. 3 is a sectional view of a heating stove provided by the embodiment of the present invention;

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

fig. 5 is a schematic structural view of a grate according to an embodiment of the present invention.

Icon: 1-furnace body, 2-combustion chamber, 3-heating chamber, 4-furnace core, 401-bearing part, 5-burner, 6-grate, 601-grate ring, 602-reinforcing rib, 603-deashing tooth, 7-ash collecting cavity, 8-primary air supply cavity, 9-secondary air supply cavity, 10-bottom plate, 11-primary air supply opening, 12-supporting piece and 13-driving column.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying 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, as 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 accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to 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" and the like indicate the 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 only for convenience of description and simplification, but the indication or suggestion that the device or element to be referred must have a specific orientation, be constructed in a specific orientation and be operated is not to 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

The existing heating stove is often provided with a combustion chamber 2 and a heating chamber 3 inside a stove body 1, wherein the combustion chamber 2 is used for supplying fuel to burn to generate heat, and the generated heat flows into the heating chamber 3 through the combustion chamber 2, so that a water jacket inside the heating chamber 3 is heated, and heating is realized. However, the combustion chamber 2 of the existing heating stove is often a cavity, and the inner space thereof is large. When the fuel burns, the generated heat can be diffused all around, and finally the heat entering the heating chamber 3 is less, and because the fuel often can not be fully combusted during the combustion, a large amount of combustible and harmful flue gas can be generated, the flue gas is directly discharged, the environment is polluted, a large amount of heat energy can be taken away, and the heat utilization rate is low.

Therefore, in order to solve the technical problem, please refer to fig. 1 to 4, this embodiment provides a secondary combustion structure of a heating stove, which includes a stove body 1, a combustion chamber 2 is arranged inside the stove body 1, a stove core 4 is arranged inside the combustion chamber 2, a burner 5 is arranged on the top of the stove core 4, a grate 6 is arranged at the bottom of the stove core 4, an ash collecting cavity 7 is arranged below the grate 6, the ash collecting cavity 7 is communicated with the external environment, a primary air supply cavity 8 is formed on the inner walls of the stove core 4 and the combustion chamber 2, and a secondary air supply cavity 9 is arranged on the periphery of the burner 5; the primary air supply cavity 8 is respectively communicated with the dust collecting cavity 7 and the secondary air supply cavity 9. In this embodiment, the primary air supply chamber 8 is formed by: above-mentioned 4 bottoms of wick are equipped with the bottom plate 10 that is used for supporting wick 4, the opening with 4 inside intercommunications of wick is seted up to bottom plate 10, and four angles of bottom plate 10 are the chamfer structure, and wick 4 is transversal personally submits regular octagon for it installs back in combustion chamber 2, the wall laminating of four wherein faces and combustion chamber 2 of wick 4, and form the clearance between four other faces and the combustion chamber 2, form once air feed chamber 8 promptly, and the breach and the collection ash cavity 7 intercommunication that once air feed chamber 8 formed through the chamfer structure on the bottom plate 10. Of course, the manner of forming the primary air supply chamber 8 is not limited to the above-described manner.

Through the aforesaid setting, add fuel into the furnace core 4 inside and ignite when using earlier, the air of external environment this moment gets into once air feed chamber 8 through ash collecting chamber 7, the heat partly transmission that the fuel burning produced this moment is once air feed chamber 8 through the wall of furnace core 4, thereby preheat the air in once air feed chamber 8, air admission secondary air feed chamber 9 after preheating afterwards, the high temperature that produces when the fuel burning this moment upwards diffuses to combustor 5 during, hot-air in the secondary air feed chamber 9 gets into combustor 5 inside and high temperature flue gas intensive mixing from the ventilation hole that sets up on combustor 5, and then make the high temperature flue gas take place the postcombustion, the flue gas and the heat that the final burning produced diffuse away through the top of combustor 5. From the above, on one hand, the utility model limits the fuel to burn in the limited space by arranging the furnace core 4 to prevent the heat from spreading everywhere as much as possible, so that as much heat as possible enters the heating chamber 3, and the heat energy utilization rate is improved; on the other hand, the utility model realizes the secondary air supply to the combustor 5 by arranging the primary air supply cavity 8 and the secondary air supply cavity 9, so that the high-temperature flue gas generated during the fuel combustion is fully mixed with the oxygen in the air again, the secondary combustion is realized, and the heat energy utilization rate is further improved; simultaneously, the air through the primary air supply cavity 8 can also be heated by the heat penetrating out of the wall of the furnace core 4, so that the air is preheated, and the secondary combustion effect is better.

In this embodiment, in order to facilitate better combustion of the fuel in the core 4, it is ensured that there is sufficient oxygen inside the core 4. The side wall of the furnace core 4 is provided with a primary air supply port 11, the primary air supply port 11 is obliquely arranged, and the interior of the furnace core 4 is communicated with the primary air supply cavity 8 through the primary air supply port 11. Through the above arrangement, outside air enters the furnace core 4 from the grate 6, and preheated air in the primary air supply cavity 8 can enter the furnace core 4 through the primary air supply port 11, so that the air and high-temperature flue gas flowing upwards can be mixed on the basis of increasing the oxygen content in the furnace core 4, secondary combustion is generated in the furnace core 4, and the heat energy utilization rate is improved.

In this embodiment, considering that the service life of the burner 5 is limited in a high-temperature environment, in order to facilitate replacement of the burner 5 when damaged, the top surface of the furnace core 4 is provided with the bearing part 401, and the bottom of the burner 5 is borne on the top surface of the bearing part 401, so that the burner 5 can be directly placed on the bearing part 401 during installation without performing fixing operations such as welding.

In the embodiment, in order to make the flame and the high-temperature flue gas generated during the combustion of the fuel better gather towards the burner 5, the inside of the furnace core 4 is in a circular truncated cone structure with a small upper part and a large lower part, and the diameters of the bottom of the burner 5 at the top of the furnace core 4 are equal, so as to ensure that all the flame and the flue gas can pass through the burner 5 as far as possible.

In this embodiment, in order to facilitate replacement of the grate 6 and improve the structural strength of the grate 6 and the actual ash removal effect, the bottom of the grate 6 is provided with a support member 12, the center of the grate 6 is rotatably connected with the support member 12, the grate 6 is detachably connected with the bottom of the furnace core 4 through the support member 12, the support member 12 is used for supporting the grate 6, the support member 12 is in a U-shaped structure, the center of the grate 6 is provided with a through hole, the center top surface of the support member 12 is provided with a rotating column, the rotating column is inserted into the through hole to realize the rotary connection of the support member 12 and the grate 6, so that the grate 6 and the support member 12 can be conveniently detached, the two ends of the support member 12 are provided with extending portions with fixing holes, and the support member 12 can be fixed at the bottom of the furnace core 4 by inserting fasteners such;

meanwhile, the furnace body also comprises a driving column 13 used for driving the grate 6 to rotate, one end of the driving column 13 is connected with the outer edge of the grate 6, and the other end of the driving column 13 extends out of the furnace body 1. In the actual ash removal process, an operator can push and pull the driving column 13 continuously outside the furnace body 1 to drive the grate 6 to rotate within a certain angle range, so that ash borne on the grate 6 falls into the ash collection cavity 7 more quickly, and the ash removal process is quick and convenient.

In this embodiment, considering that the gap between the existing grate 6 where ash falls is often long and the gap is small, so as to increase the gap between the ash and the ash, please refer to fig. 5, the grate 6 includes a plurality of grate rings 601 whose diameters are sequentially increased from inside to outside, and the annular grate rings 601 can increase the gap between the ash and the ash, so that large carbon slag can smoothly fall into the ash collecting cavity 7, and a reinforcing rib 602 is disposed between two adjacent grate rings 601 to improve the overall structural strength of the grate 6.

In this embodiment, in order to further improve the ash removal effect, the top surface of the grate ring 601 is provided with the ash removal teeth 603, and in the process of driving the grate 6 to rotate through the driving column 13, the ash removal teeth 603 can stir the fuel to burn the carbon slag adhered together and break the carbon slag, so that the carbon slag can more smoothly fall into the ash collection cavity 7 from the grate 6.

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 (7)

1. A secondary combustion structure of a heating stove comprises a stove body, wherein a combustion chamber is arranged inside the stove body, and the secondary combustion structure is characterized in that a stove core is arranged inside the combustion chamber, a burner is arranged at the top of the stove core, a grate is arranged at the bottom of the stove 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 stove core and the combustion chamber, and a secondary air supply cavity is arranged on 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. The secondary combustion structure of a 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.

3. The secondary combustion structure of a 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.

4. The secondary combustion structure of a 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.

5. The secondary combustion structure of a heating stove according to claim 1, characterized in that: the bottom of the grate is provided with a supporting piece, the center of the grate is rotatably connected with the supporting piece, and the grate is detachably connected with the bottom of the furnace core through the supporting piece;

the furnace grate is characterized by further comprising a driving column, wherein one end of the driving column is connected with the outer edge of the furnace grate, and the other end of the driving column extends out of the furnace body.

6. The secondary combustion structure of a heating stove according to claim 5, characterized in that: the grate comprises a plurality of grate rings with the diameters sequentially increased from inside to outside, and reinforcing ribs are arranged between every two adjacent grate rings.

7. The secondary combustion structure of a heating stove according to claim 6, characterized in that: the top surface of the grate ring is provided with ash removal teeth.

Images