CN111765456A

CN111765456A - Internal combustion type burner and stove

Info

Publication number: CN111765456A
Application number: CN202010543988.1A
Authority: CN
Inventors: 徐同昕
Original assignee: Yuan'an Fuel Gas Technology Co ltd
Current assignee: Yuan'an Fuel Gas Technology Co ltd
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2020-10-13

Abstract

The invention discloses an internal combustion type burner and a cooking range, wherein the internal combustion type burner comprises a combustion chamber shell, the top of the shell is designed to be an opening; the side wall of the shell is provided with a gas inlet hole and a primary air inlet hole, the primary air inlet hole is positioned around the gas inlet hole, the gas pipeline is connected with the gas inlet hole, an igniter is further arranged at the gas inlet hole, and the upper part of the side wall of the shell is provided with a plurality of secondary air inlet holes. An airflow cover is arranged outside the shell to wrap the combustion chamber shell inside. The stove prepared by the burner has the advantages that the upper part of the opening at the top of the shell of the combustion chamber is connected with the heat storage chamber, the flow-limiting pot is arranged on the heat storage chamber, and the pot is arranged on the flow-limiting pot. Through adopting this structure, the gas is at the inside burning of combustor, does not receive natural environment low temperature to influence, does not receive external wind direction and air humidity's influence, and the hot gas flow that the burning produced moreover is introduced in the heat accumulation current-limiting structure, utilizes the heat energy in the heat accumulation current-limiting structure again, can promote the heat utilization ratio by a wide margin.

Description

Internal combustion type burner and stove

Technical Field

The invention relates to the technical field of stoves, in particular to an internal combustion type burner and a stove.

Background

The gas cooker is one of the most popular gas cookers for household use at present. When the gas stove works, gas enters the stove from the gas inlet pipe, enters the stove head through the adjustment of the gas valve (the adjustment is carried out by a user through a knob), and simultaneously mixes a part of air, the mixed gas is sprayed out from the fire hole of the distributor and is ignited by the ignition device to form flame, and the temperature of the flame is utilized to heat a cooker arranged on the pot support.

The existing gas cookers are all open-type combustion, belong to natural environment low-temperature type combustion, flame and high-temperature fluid heat energy are lost rapidly, even a part of products are unreasonable in oxygen supply design, and gas and primary air are not fully mixed.

Disclosure of Invention

The invention provides an internal combustion type burner and an internal combustion type stove, wherein fuel gas is combusted in the burner, the burner is not influenced by low temperature of the natural environment and external wind direction and air humidity, and hot air flow generated by combustion is introduced into a heat storage and flow limiting structure by arranging the heat storage and flow limiting structure, and then heat energy in the heat storage and flow limiting structure is utilized, so that the heat utilization rate can be greatly improved, and the purposes of environmental protection and energy saving can be achieved.

The technical scheme of the invention is that the internal combustion type combustor comprises a combustion chamber shell, wherein the shell is provided with a bottom plate and a side wall, and the top of the shell is provided with an opening; the middle lower part of the shell is provided with a gas inlet hole and a primary gas inlet hole, the primary gas inlet hole is positioned around the gas inlet hole, a gas pipeline is connected with the gas inlet hole, an igniter is further arranged at the gas inlet hole, and the side wall of the shell is further provided with a plurality of secondary gas inlet holes.

Furthermore, the burning chamber shell is of a structure with two thin ends and a thick middle part.

Furthermore, the middle upper portion of the side wall of the shell is provided with a plurality of secondary air inlets which are uniformly distributed.

Furthermore, an airflow cover is arranged on the outer side of the combustion chamber shell to wrap the combustion chamber shell inside; the edge of the top of the airflow cover and the outside of the opening of the combustion chamber shell are provided with a top sealing plate, so that the space between the outside of the top of the combustion chamber shell and the top of the airflow cover is sealed; the bottom of the combustion chamber shell and the bottom of the airflow cover are provided with a sealing bottom plate, and the sealing bottom plate is provided with at least one sealing bottom plate air inlet; a gap is reserved between the side wall of the combustion chamber shell and the side wall of the airflow cover.

The invention also relates to an internal combustion type stove, which comprises the internal combustion type burner.

Furthermore, the bottom of the stove is provided with an internal combustion type burner, the upper part of the stove is provided with a heat storage chamber, the heat storage chamber consists of a bottom plate, a top plate and a side plate, the middle part of the bottom plate is provided with a hot air inlet, the middle part of the top plate is provided with a pot placing opening to be heated, and a cavity is formed among the pot placing opening of the top plate, the hot air inlet of the bottom plate and the side plate; the cavity is divided into a plurality of heat storage grids by the partition plate, and the partition plate is provided with a partition plate flow limiting hole for communicating two adjacent heat storage grids; the top of the combustion chamber is provided with an opening which is in butt joint with a hot air flow inlet of the regenerator.

Furthermore, one end of the partition board is connected with the side plate of the heat storage chamber, the other end of the partition board is connected between the hot air inlet and the placing opening of the pot to be heated, the upper part of the partition board is connected with the top plate of the heat storage chamber, and the lower part of the partition board is connected with the bottom plate of the heat storage chamber.

Furthermore, a current-limiting pot is further arranged below the pot placing opening to be heated, a central hole is formed in the bottom of the current-limiting pot and matched with the size of the hot air inlet, a plurality of pot body current-limiting holes are formed in the side wall of the current-limiting pot, and the inner side of the pot body is communicated with the heat storage grids on the outer side of the pot body.

Furthermore, an arc-shaped notch is formed in the end, close to the hot air inlet, of the flow limiting plate and the containing end of the pot to be heated, and the arc-shaped notch is matched with the radian of the outer wall of the flow limiting pot.

Furthermore, a jacket water cylinder is arranged outside the pipeline at the smoke outlet.

Furthermore, the lower part of the regenerator is also provided with a bracket for supporting the regenerator, and the internal-combustion burner is positioned inside the bracket. One side of the top plate of the heat storage chamber is also connected with a folding plate.

The invention has the following beneficial effects:

1. the high-efficiency combustion of the fuel gas requires sufficient oxygen and ignition temperature capable of being ignited normally; the combustion chamber shell is arranged into a relatively closed structure, and fuel gas is combusted in the combustion chamber shell and can be rapidly heated to become high-temperature airflow; on the other hand, the generated high-temperature airflow can provide a high-temperature environment for the whole combustion chamber, so that the temperature of the fuel gas is rapidly increased, and the fuel gas can be more thoroughly combusted in the combustion chamber under the state of secondary oxygen supply.

2. The internal combustion type combustion chamber is provided with two air inlets, and the first air inlet is formed by mixing air into the combustion chamber shell when fuel gas enters the combustion chamber shell from a fuel gas pipeline, so that the ignition of the fuel gas is facilitated; the design of gas inlet hole and one time inlet hole for the weak fluid power of pipeline gas can promote the inside vortex of casing to form, has played good "source power effect", and the lower part easily forms the negative pressure in the combustor, makes the air current produce the vortex effect and forms the vortex rotation in the casing inside, thereby more abundant even messenger's gas and air misce bene. In addition, a plurality of secondary air inlets are arranged on the side wall of the combustion chamber shell, oxygen is supplied through the secondary air inlets, and the full combustion of fuel gas is promoted.

3. The combustion chamber may be provided in a single-layer or double-layer structure. The single-layer structure only comprises a shell, fuel gas is combusted in the shell, and air directly enters from the outside of the furnace body through a primary air inlet and a secondary air inlet respectively; the structure has poor heat storage function and is suitable for the cooking range needing to be heated by utilizing the combustion chamber. The double-layer structure comprises a shell and an airflow cover outside the shell, air enters a cavity between the airflow cover and the shell from the bottom and then enters a primary air inlet and a secondary air inlet respectively, certain negative pressure is formed due to the fact that high-temperature airflow after combustion is discharged from the top of the shell, and the air on the outer side enters the shell through the primary air inlet and the secondary air inlet more easily to form stable airflow. And the airflow cover is provided with the heat-insulating layer, so that heat is contained in the shell or exhausted through the top opening of the shell as much as possible, and the heat is prevented from being dissipated through other parts to cause waste.

4. In the double-layer structure of the internal combustion type combustor, the interlayer space formed by the shell and the airflow cover on the outer side of the shell can heat air before entering the shell by utilizing heat emitted by the shell, and the formed high-temperature air is favorable for thorough combustion of fuel gas.

5. This kitchen range is still through setting up heat accumulation current-limiting structure, collects the regenerator with the hot gas flow that the combustion chamber burning produced, avoids its direct heating pan to cause great calorific loss, can play the heat accumulation and continuously release the purpose of heat energy. The heat storage chamber is of a relatively closed structure and is divided into a plurality of heat storage grids, so that retention of high-temperature fluid is facilitated, and a better heat energy storage effect is achieved; meanwhile, the clapboard flow limiting hole is formed in the clapboard, the flow limiting effect is achieved, heat exchange among the heat storage grids can be kept, and the temperature of the heat storage grids is more uniform.

6. In the more preferred scheme, through the setting of current-limiting pot, can carry out balanced reposition of redundant personnel to high temperature fluid more effectively, avoid the defect that conventional kitchen range difference in temperature is great, avoids the temperature imbalance.

7. By adopting the heat storage current limiting structure, the overflow of heat energy is greatly reduced. The smoke outlet can be provided with a clamping sleeve, and the discharged heat can be further absorbed by heating water.

8, through the whole combination of internal combustion type combustor, regenerator, current-limiting intermediate layer pot, the kitchen range can improve the heat utilization ratio by a wide margin, has played fine environmental protection and energy saving effect.

Drawings

Fig. 1 is a schematic structural view of an internal combustion burner in embodiment 1.

Fig. 2 is a schematic structural view of an internal combustion burner of embodiment 2.

Fig. 3 is a schematic structural view of an internal combustion burner of embodiment 3.

Fig. 4 is a schematic structural view of an internal combustion burner of embodiment 4.

Fig. 5 is a schematic structural view of an internal combustion burner of embodiment 5.

Fig. 6 is a schematic structural view of an internal combustion burner of embodiment 6.

Fig. 7 is a schematic structural view of an internal combustion burner of embodiment 7.

Fig. 8 is a schematic structural view of an internal combustion burner of embodiment 8.

Fig. 9 is a schematic structural view of an internal combustion burner of embodiment 9.

Fig. 10 is a schematic structural view of an internal combustion burner of embodiment 10.

Fig. 11 is a schematic structural view of an internal combustion burner of embodiment 11.

Fig. 12 is a schematic structural view of an internal combustion burner of embodiment 12.

Fig. 13 is a schematic structural view of an internal combustion burner of embodiment 13.

Fig. 14 is a schematic structural view of an internal combustion burner of embodiment 14.

Fig. 15 is a schematic structural view of an internal combustion burner of embodiment 15.

Fig. 16 is a schematic structural view of an internal combustion burner of embodiment 16.

FIG. 17 is a schematic view of the structure of a regenerative chamber according to example 17.

Fig. 18 is a schematic structural view of a flow-restricting pot in embodiment 18.

Fig. 19 is a schematic view showing a structure of a range according to embodiment 19.

Detailed description of the preferred embodiments

Embodiments of the present invention will be described in detail below with reference to examples, but those skilled in the art will appreciate that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention.

Example 1:

as shown in figure 1, the internal combustion type combustor comprises a combustion chamber shell 1, wherein the shell is provided with a bottom plate 1-1 and a side wall 1-2, and the top of the shell is provided with an opening 1-3; the middle of the shell is provided with a cylindrical tube, and two ends of the cylindrical tube are respectively connected with the circular truncated cone structures to form a shape with thin two ends and thick middle. The side wall of the cylinder is provided with gas inlet holes 1-4 and primary gas inlet holes 1-5, the primary gas inlet holes are positioned around the gas inlet holes, the gas pipeline is connected with the gas inlet holes, the gas inlet holes are also provided with igniters, and the upper part of the side wall of the shell is provided with a plurality of secondary gas inlet holes 1-6.

After the fuel gas enters the shell, the space is instantly enlarged, and the caliber of the hot gas flow formed by combustion is gradually reduced in the process of rising upwards, so that the heat energy is conveniently and intensively collected and utilized.

In addition, in the preferred scheme, a mixed air inlet pipe can be installed at the position of the gas inlet hole, the tail end of the gas pipeline is located in the mixed air inlet pipe, a primary air inlet hole is formed in the side wall of the mixed air inlet pipe, and a plurality of primary air inlet holes are preferably arranged close to the igniter.

When in use, the external gas pipe is connected with the combustion chamber shell through the gas inlet hole, and is mixed with oxygen entering through the primary gas inlet holes 1-5, and a switch is arranged to control ignition, gas supply and gas source cut-off. The gas is rapidly combusted in the closed combustion type shell to raise the temperature. The secondary air inlet provides secondary oxygen to enable the fuel gas to be normally combusted, and the temperature in the shell is rapidly increased during combustion and is far higher than the temperature of the external environment during open combustion.

Example 2:

as shown in fig. 2, in example 1, an airflow cover 2 is provided, and the airflow cover 2 is cylindrical and encloses a combustion chamber casing 1; a top sealing plate 2-1 is arranged outside the edge of the top of the airflow cover and the opening of the combustion chamber shell to seal the space between the outer side of the top of the combustion chamber shell and the top of the airflow cover; the bottom of the combustion chamber shell and the bottom of the airflow cover are provided with a sealing bottom plate 2-2, and the sealing bottom plate is provided with 2 sealing bottom plate air inlets 2-4 for allowing outside air to enter the airflow cover.

The side wall of the cylinder is not provided with holes, and an insulating layer can be arranged according to the requirement. The airflow cover 2 may be provided in a cubic or other prism shape as necessary.

When the gas burner works, the interlayer formed by the combustion chamber shell and the outer cylinder airflow cover can play a role of preheating air, the temperature of gas entering a primary air inlet and a secondary air inlet is improved, high-temperature air is formed more easily, the gas can be combusted fully, and particularly for gas containing impurities, "high-temperature fluid" formed after the gas is combusted in the burner is discharged from the top opening 1-3 of the shell for heating.

When the gas-fired boiler works, the interlayer formed by the combustion chamber shell and the outer cylinder airflow cover can play a role in heating air, and the gas entering from the primary air inlet and the secondary air inlet forms high-temperature air, so that the gas-fired boiler is more favorable for full combustion of gas, and particularly has a good clean combustion effect on the gas containing impurities. The high temperature fluid formed after the combustion of the gas in the burner is discharged from the opening 1-3 at the top of the shell for heating.

Example 3:

as shown in figure 3, the internal combustion type combustor comprises a combustion chamber shell 1, wherein the shell is provided with a bottom plate 1-1 and a side wall 1-2, and the top of the shell is provided with an opening 1-3; the shell is of an upper-lower structure, the lower part of the shell is a cylindrical tube, and the upper end of the cylindrical tube is connected with a circular truncated cone to form a shape with a thick lower part and a thin upper part. The side wall of the cylinder is provided with gas inlet holes 1-4 and primary gas inlet holes 1-5, the primary gas inlet holes are positioned around the gas inlet holes, the gas pipeline is connected with the gas inlet holes, the gas inlet holes are also provided with igniters, and the upper part of the side wall of the shell is provided with a plurality of secondary gas inlet holes 1-6.

Example 4:

as shown in fig. 4, in example 3, an airflow cover 2 is provided, and the airflow cover 2 is cylindrical and encloses a combustion chamber casing 1; a top sealing plate 2-1 is arranged outside the edge of the top of the airflow cover and the opening of the combustion chamber shell to seal the space between the outer side of the top of the combustion chamber shell and the top of the airflow cover; the bottom of the combustion chamber shell and the bottom of the airflow cover are provided with a sealing bottom plate 2-2, and the sealing bottom plate is provided with 2 sealing bottom plate air inlets 2-4 for allowing outside air to enter the airflow cover.

Example 5:

as shown in FIG. 5, the internal combustion type burner comprises a combustion chamber shell 1, wherein the shell is provided with a bottom plate 1-1 and a side wall 1-2, and the top of the shell is provided with an opening 1-3; the shell is of an upper structure and a lower structure, the upper structure and the lower structure are of circular truncated cone structures, the large-diameter bottoms of the circular truncated cones are in butt joint to form a shape with a thick middle part and two thin ends, and the height of the lower circular truncated cone is smaller than that of the upper circular truncated cone. The side wall of the lower circular truncated cone is provided with gas inlet holes 1-4 and primary gas inlet holes 1-5, the primary gas inlet holes are positioned around the gas inlet holes, the gas pipeline is connected with the gas inlet holes, the gas inlet holes are also provided with igniters, and the upper part of the side wall of the shell is provided with a plurality of secondary gas inlet holes 1-6.

Example 6:

as shown in fig. 6, in example 5, an airflow cover 2 is provided, and the airflow cover 2 is cylindrical and encloses a combustion chamber casing 1; a top sealing plate 2-1 is arranged outside the edge of the top of the airflow cover and the opening of the combustion chamber shell to seal the space between the outer side of the top of the combustion chamber shell and the top of the airflow cover; the bottom of the combustion chamber shell and the bottom of the airflow cover are provided with a sealing bottom plate 2-2, and the sealing bottom plate is provided with 2 sealing bottom plate air inlets 2-4 for allowing outside air to enter the airflow cover.

Example 7:

as shown in fig. 7, an internal combustion burner comprises a combustion chamber shell 1, wherein the shell is ellipsoidal, a planar bottom plate 1-1 is arranged at the lower end in the long axis direction, a curved side wall 1-2 is provided with an opening 1-3 at the upper end; the lower part of the side wall is provided with a gas inlet hole 1-4 and a primary gas inlet hole 1-5, the primary gas inlet hole is positioned around the gas inlet hole, a gas pipeline is connected with the gas inlet hole, the gas inlet hole is also provided with an igniter, and the upper part of the side wall of the shell is provided with a plurality of secondary gas inlet holes 1-6.

Example 8:

as shown in fig. 8, in example 7, an airflow cover 2 is provided, and the airflow cover 2 is cylindrical and encloses the combustion chamber casing 1; a top sealing plate 2-1 is arranged outside the edge of the top of the airflow cover and the opening of the combustion chamber shell to seal the space between the outer side of the top of the combustion chamber shell and the top of the airflow cover; the bottom of the combustion chamber shell and the bottom of the airflow cover are provided with a sealing bottom plate 2-2, and the sealing bottom plate is provided with 2 sealing bottom plate air inlets 2-4 for allowing outside air to enter the airflow cover.

Example 9:

as shown in fig. 9, an internal combustion burner comprises a combustion chamber shell 1, wherein the shell is spherical, a planar bottom plate 1-1 is arranged at the lower part of the sphere, a side wall 1-2 is a curved surface, and an opening 1-3 is arranged at the upper part of the sphere; the lower part of the side wall is provided with a gas inlet hole 1-4 and a primary gas inlet hole 1-5, the primary gas inlet hole is positioned around the gas inlet hole, a gas pipeline is connected with the gas inlet hole, the gas inlet hole is also provided with an igniter, and the middle upper part of the side wall of the shell is provided with a plurality of secondary gas inlet holes 1-6.

Example 10:

as shown in fig. 10, in example 9, an airflow cover 2 is provided, and the airflow cover 2 is cylindrical and encloses a combustion chamber casing 1 therein; a top sealing plate 2-1 is arranged outside the edge of the top of the airflow cover and the opening of the combustion chamber shell to seal the space between the outer side of the top of the combustion chamber shell and the top of the airflow cover; the bottom of the combustion chamber shell and the bottom of the airflow cover are provided with a sealing bottom plate 2-2, and the sealing bottom plate is provided with 2 sealing bottom plate air inlets 2-4 for allowing outside air to enter the airflow cover.

Example 11:

as shown in fig. 11, the internal combustion type burner comprises a combustion chamber shell 1, wherein the shell is a cylinder and comprises a side wall 1-2, a bottom plate 1-1 is arranged at the bottom of the cylinder, an opening 1-3 is arranged at the upper bottom of the cylinder, a gas inlet hole 1-4 and a primary air inlet hole 1-5 are arranged at the lower part of the side wall, the primary air inlet hole is positioned around the gas inlet hole, a gas pipeline is connected with the gas inlet hole, an igniter is further arranged at the gas inlet hole, and a plurality of secondary air inlet holes 1-6 are arranged at the middle part and the upper part.

Example 12:

as shown in fig. 12, in example 11, an airflow cover 2 is provided, and the airflow cover 2 is cylindrical and encloses the combustion chamber casing 1; a top sealing plate 2-1 is arranged outside the edge of the top of the airflow cover and the opening of the combustion chamber shell to seal the space between the outer side of the top of the combustion chamber shell and the top of the airflow cover; the bottom of the combustion chamber shell and the bottom of the airflow cover are provided with a sealing bottom plate 2-2, and the sealing bottom plate is provided with 2 sealing bottom plate air inlets 2-4 for allowing outside air to enter the airflow cover.

Example 13:

as shown in fig. 13, the internal combustion type burner comprises a combustion chamber shell 1, the shell is in a round table structure, the upper bottom of the shell is smaller than the lower bottom of the shell, the internal combustion type burner specifically comprises a side wall 1-2, the bottom of the shell is provided with a bottom plate 1-1, the top of the shell is provided with an opening 1-3, the lower part of the side wall is provided with a gas inlet hole 1-4 and a primary air inlet hole 1-5, the primary air inlet hole is positioned around the gas inlet hole, a gas pipeline is connected with the gas inlet hole, an igniter is further arranged at the gas inlet hole.

Example 14:

as shown in fig. 14, in example 13, an airflow cover 2 is provided, and the airflow cover 2 is cylindrical and encloses the combustion chamber casing 1; a top sealing plate 2-1 is arranged outside the edge of the top of the airflow cover and the opening of the combustion chamber shell to seal the space between the outer side of the top of the combustion chamber shell and the top of the airflow cover; the bottom of the combustion chamber shell and the bottom of the airflow cover are provided with a sealing bottom plate 2-2, and the sealing bottom plate is provided with 2 sealing bottom plate air inlets 2-4 for allowing outside air to enter the airflow cover.

Example 15:

as shown in fig. 15, the internal combustion type burner comprises a combustion chamber shell 1, wherein the shell is provided with a bottom plate 1-1 and a side wall 1-2, and the top of the shell is provided with an opening 1-3; the shell is of an upper structure and a lower structure, the upper part and the lower part are the same round platform knots, the large-diameter bottoms of the round platforms are in butt joint to form a shape with the thick middle part and the thin two ends, and the height of the lower round platform is equal to that of the upper round platform. The side wall of the lower circular truncated cone is provided with gas inlet holes 1-4 and primary gas inlet holes 1-5, the primary gas inlet holes are positioned around the gas inlet holes, the gas pipeline is connected with the gas inlet holes, the gas inlet holes are also provided with igniters, and the upper part of the side wall of the shell is provided with a plurality of secondary gas inlet holes 1-6.

Example 16:

as shown in fig. 16, in example 15, an airflow cover 2 is provided, and the airflow cover 2 is cylindrical and encloses the combustion chamber casing 1; a top sealing plate 2-1 is arranged outside the edge of the top of the airflow cover and the opening of the combustion chamber shell to seal the space between the outer side of the top of the combustion chamber shell and the top of the airflow cover; the bottom of the combustion chamber shell and the bottom of the airflow cover are provided with a sealing bottom plate 2-2, and the sealing bottom plate is provided with 2 sealing bottom plate air inlets 2-4 for allowing outside air to enter the airflow cover.

The above embodiments are only for clearly illustrating the technical solution of the present invention, and the size, shape and number of the components in the embodiments are not limited thereto. The number of the primary air inlet holes, the number of the secondary air inlet holes and the number of the air inlets of the sealing bottom plate can be adjusted at will according to requirements.

Example 17:

as shown in fig. 17, a heat storage structure for a stove comprises a heat storage chamber 3, the heat storage chamber is composed of a bottom plate 3-1, a top plate 3-2 and side plates 3-3, a hot air inlet 4 is arranged in the middle of the bottom plate, a pot placing opening 5 to be heated is arranged in the middle of the top plate, and a cavity is formed among the pot placing opening of the top plate, the hot air inlet of the bottom plate and the side plates; the cavity is divided into a plurality of heat storage grids by the partition plate 6, and a partition plate flow limiting hole 6-1 is arranged on the partition plate to communicate two adjacent heat storage grids; the edge of the top plate of the heat storage chamber is provided with a smoke outlet 8.

In the preferred scheme, curb plate is connected to baffle one end, and the other end is connected to the hot gas flow import and treats that the heating pan is placed between the mouth, and baffle upper portion is connected with the roof, and the lower part is connected with the bottom plate.

When the heat storage device is used, the hot air outlet of the combustion chamber is in butt joint with the hot air inlet of the heat storage chamber, the pot is directly placed on the opening in the middle of the top plate, and the hot air entering from the hot air inlet is retained between the heat storage grids of the heat storage chamber to heat the pot.

Example 18:

in this embodiment, as shown in fig. 18, a current-limiting pot 7 is further provided below the pot placing opening to be heated, the diameter of the pot placing opening to be heated is larger than the diameter of the hot air inlet, the bottom of the current-limiting pot is provided with a central hole 7-1 which is matched with the hot air inlet in size, the side wall of the current-limiting pot is provided with a plurality of pot body current-limiting holes 7-2 which communicate the inner side of the pot body with the heat storage grid on the outer side of the pot body.

In order to better install the current-limiting pot, an arc-shaped notch is arranged at the end of the current-limiting plate close to the hot air inlet and the pot placing port to be heated, and the arc-shaped notch is matched with the radian of the outer wall of the current-limiting pot.

When the heat storage chamber is used, the lower part of the heat storage chamber is provided with the combustion chamber, and a hot air outlet of the combustion chamber is in butt joint with a hot air inlet of the heat storage chamber. The hot air flow of combustion chamber enters into the inboard of central pot through hot air current import and the centre bore of current-limiting pot, and the pan is arranged in the top of current-limiting pot, forms sandwich structure between current-limiting pot and the pan, and heating efficiency is higher, and unnecessary heat enters into to hold in the heat check through pot body restricted aperture and stores for each position heat of current-limiting pot is more balanced. In order to better utilize heat, a clamping sleeve for adding water can be arranged outside the pipeline at the smoke outlet, water is added into the clamping sleeve during working, redundant heat is utilized to heat water, and the waste of heat overflowing to a large extent is avoided.

Example 19:

a stove with an internal combustion burner is shown in figure 19 and comprises a burner, a stove outer cylinder, a heat accumulation and flow limiting cavity, a heat accumulation jacketed kettle and an igniter.

The burner comprises a combustion chamber shell 1 and an airflow cover 2; the combustion chamber shell is provided with a bottom plate 1-1 and a side wall 1-2, and the top of the shell is provided with an opening 1-3; the middle of the side wall of the shell is provided with a cylindrical tube, and two ends of the cylindrical tube are respectively connected with the circular truncated cone structures to form a shape with thin two ends and thick middle. The side wall of the shell is provided with gas inlet holes 1-4 and primary gas inlet holes 1-5, the primary gas inlet holes are positioned around the gas inlet holes, the gas pipeline is connected with the gas inlet holes, the igniter is also arranged at the gas inlet holes, and the upper part of the side wall of the shell is provided with a plurality of secondary gas inlet holes 1-6. The airflow cover 2 wraps the combustion chamber shell 1 inside; a top sealing plate 2-1 is arranged outside the edge of the top of the airflow cover and the opening of the combustion chamber shell to seal the space between the outer side of the top of the combustion chamber shell and the top of the airflow cover; a sealing bottom plate 2-2 is arranged at the bottom of the airflow cover and the bottom plate of the combustion chamber shell, the space between the outer side of the bottom of the combustion chamber shell and the bottom of the airflow cover is sealed, and at least one sealing bottom plate air inlet 2-4 is arranged on the sealing bottom plate; gaps are reserved between the side wall of the combustion chamber shell and the side walls 2-3 of the airflow cover. The airflow cover is of a cylinder structure, and the side wall of the cylinder is closed.

The shell of the combustion chamber is made of a metal material with good heat storage performance and high temperature resistance, such as cast iron, and the airflow cover is a metal cylinder; if the outer layer of the airflow cover is provided with a heat-insulating material, ceramic wool, ceramic paper and the like for heat insulation can be selected.

The heat accumulation and flow limiting cavity comprises a heat accumulation chamber 3, the heat accumulation chamber is composed of a bottom plate 3-1, a top plate 3-2 and side plates 3-3, a hot air inlet 4 is arranged in the middle of the bottom plate, a pot placing opening 5 to be heated is arranged in the middle of the top plate, and a cavity is formed among the pot placing opening of the top plate, the hot air inlet of the bottom plate and the side plates; the cavity is separated into a plurality of heat storage grids by baffle 6, and the curb plate is connected to baffle one end, and the other end is connected to the hot gas flow import and places between the mouth with the pan of waiting to heat, and baffle upper portion is connected with the roof, and the lower part is connected with the bottom plate. The clapboard is provided with a clapboard flow limiting hole 6-1 for communicating two adjacent heat storage grids; the edge of the top plate of the heat storage chamber is provided with a smoke outlet 8.

The heat storage jacketed kettle comprises a flow-limiting kettle 7 and a kettle 9 which is sleeved on the flow-limiting kettle in a stacking manner, wherein the bottom of the flow-limiting kettle is provided with a central hole 7-1 which is matched with the size of a hot air inlet, and the side wall of the flow-limiting kettle is provided with a plurality of kettle body flow-limiting holes 7-2 which are used for communicating the inner side of the kettle body with a heat storage grid on the outer side of the kettle. In order to better install the heat storage jacketed kettle, an arc-shaped notch is arranged at the end of the flow limiting plate close to the hot air inlet and the containing port of the kettle to be heated, and the arc-shaped notch is matched with the radian of the outer wall of the flow limiting kettle.

The outer barrel of the stove is a framework structure and an external visual structure of the whole stove, is organically connected with the burner and the heat accumulation and flow limiting cavity, is integrally sealed and surrounds to form the appearance of a box body and mainly comprises an upper part and a lower part, wherein the lower part space is provided with a burner main body, and the upper part space is provided with a heat accumulation and flow limiting cavity. The bottom of the box body is provided with universal wheels, so that the box body is convenient to move. The top opening of the combustion chamber shell and the hot air flow inlet are the same opening. The inner wall of the heat accumulation flow-limiting cavity is provided with a heat insulation plate, and the upper part, the lower part and the periphery of the heat insulation plate form an internal heat insulation space, so that the temperature outside the stove body is not too high. The smoke outlet 8 is used for discharging waste gas which is carbon dioxide after combustion; the pipe of the smoke outlet 8 is provided with a clamping sleeve 12 which can be used for boiling water and utilizing the waste heat of the smoke outlet. One side of the box body is provided with a folding plate 11 which can place necessary dishes, tableware, seasonings and the like during cooking, thereby being convenient for operation.

When the gas burner is used, gas enters the gas inlet holes 1-4 from the gas pipeline, air enters the primary gas inlet holes 1-5, the igniter ignites, then the gas is combusted in the shell, and the gas supplemented by the secondary gas inlet holes is beneficial to full combustion. Due to the arrangement of the airflow cover outside the shell, the air entering the primary air inlet and the secondary air inlet can be preheated and then enters the shell, so that the combustion is more sufficient and the energy is saved. High-temperature fluid that the burning produced gets into the current-limiting pot through casing open-top, heats the pan, then the air current spills over from the restricted aperture of current-limiting pot and enters into heat accumulation current-limiting chamber for keep higher temperature in the whole heat accumulation current-limiting chamber, avoid the heat to lose at the excessive speed. The stove has the advantages of full combustion of fuel gas, high heat energy utilization rate, energy conservation and environmental protection.

Claims

1. An internal combustion type burner is characterized by comprising a combustion chamber shell, wherein the shell is provided with a bottom plate and a side wall, and the top of the shell is provided with an opening; the middle lower part of the shell is provided with a gas inlet hole and a primary gas inlet hole, the primary gas inlet hole is positioned around the gas inlet hole, a gas pipeline is connected with the gas inlet hole, an igniter is further arranged at the gas inlet hole, and the side wall of the shell is further provided with a plurality of secondary gas inlet holes.

2. The internal combustion burner of claim 1, wherein: the combustion chamber shell is of a structure with thin two ends and thick middle.

3. The internal combustion burner of claim 1, wherein: the middle upper portion of the side wall of the shell is provided with a plurality of secondary air inlets which are uniformly distributed.

4. An internal combustion burner according to any one of claims 1 to 3, wherein: an airflow cover is arranged on the outer side of the combustion chamber shell and wraps the combustion chamber shell inside; the edge of the top of the airflow cover and the outside of the opening of the combustion chamber shell are provided with a top sealing plate, so that the space between the outside of the top of the combustion chamber shell and the top of the airflow cover is sealed; the bottom of the combustion chamber shell and the bottom of the airflow cover are provided with a sealing bottom plate, and the sealing bottom plate is provided with at least one sealing bottom plate air inlet; a gap is reserved between the side wall of the combustion chamber shell and the side wall of the airflow cover.

5. An internal combustion type stove is characterized in that: the range contains an internal combustion burner as claimed in any one of claims 1 to 4.

6. The stove of claim 5, wherein: the bottom of the stove is an internal combustion burner, the upper part of the stove is a heat storage chamber, the heat storage chamber is composed of a bottom plate, a top plate and a side plate, the middle part of the bottom plate is provided with a hot air inlet, the middle part of the top plate is provided with a pot placing opening to be heated, and a cavity is formed among the pot placing opening of the top plate, the hot air inlet of the bottom plate and the side plate; the cavity is divided into a plurality of heat storage grids by the partition plate, and the partition plate is provided with a partition plate flow limiting hole for communicating two adjacent heat storage grids; the top of the combustion chamber is provided with an opening which is in butt joint with a hot air flow inlet of the regenerator.

7. The stove of claim 6, wherein: the regenerator curb plate is connected to baffle one end, and the other end is connected to the hot gas flow import and treats that the heating pan is placed between the mouth, and baffle upper portion is connected with the regenerator roof, and the lower part is connected with the regenerator bottom plate.

8. The stove of claim 6, wherein: the pot to be heated is provided with a flow-limiting pot under the placing opening, the bottom of the flow-limiting pot is provided with a central hole, the central hole is matched with the size of a hot air flow inlet, and the side wall of the flow-limiting pot is provided with a plurality of pot body flow-limiting holes which communicate the inner side of the pot body with the heat storage grids outside the pot body.

9. The range of claim 8, wherein: the end of the flow limiting plate close to the hot air inlet and the placing port of the pot to be heated is provided with an arc-shaped notch, and the arc-shaped notch is matched with the radian of the outer wall of the flow limiting pot.

10. The stove of claim 6, wherein: and a jacket water cylinder is arranged outside the pipeline at the smoke outlet.