CN113357629A

CN113357629A - A kind of burner

Info

Publication number: CN113357629A
Application number: CN202110670425.3A
Authority: CN
Inventors: 徐建波
Original assignee: Individual
Current assignee: Boli Stove Technology Co ltd
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2021-09-07
Anticipated expiration: 2041-06-17
Also published as: CN113357629B

Abstract

The invention relates to a burner, comprising a furnace plate, a furnace head and a gas nozzle. A pre-mixing cavity is formed inside the furnace head, the gas nozzle is communicated with the pre-mixing cavity, and the furnace plate is arranged in the furnace head and is connected to the pre-mixing cavity. Located in the upper part of the premixing cavity, the furnace plate is provided with a plurality of through holes penetrating through its wall thickness, and the premixing cavity is laterally provided with a muffler plate, the muffler plate is located below the furnace plate, and the The muffler plate is provided with a plurality of muffler holes penetrating through its wall thickness. In the present invention, the muffler plate is arranged below the furnace plate, that is, along the flow direction of the air flow, the muffler plate is located upstream of the furnace plate, and the muffler plate is provided with a plurality of muffler holes, so that before the gas is burned, the muffler plate is The muffler holes on the air flow change and interfere with the airflow, which can achieve the purpose of noise reduction and noise reduction.

Description

A kind of burner

Technical Field

The present invention relates to a burner.

Background

Almost all blowing type combustors in the market all have a general problem at present, and the noise of blowing type combustor has too big, can both reach 80 decibels generally, when being in the culinary art environment in the kitchen, operational environment noise is big, hardly hears up people's speech, seriously influences kitchen staff's physical and mental health. The best treatment method at present is to place the pot on the burner, seal the combustion chamber and discharge noise and waste gas from the flue, but the combustion effect of the burner is poor, and the phenomena of deflagration and carbon monoxide concentration exceeding standard can be caused due to insufficient combustion, so that safety accidents can occur, and the noise phenomenon can also occur when the pot is taken out.

In addition, the furnace plate is an important part of the burner, and the performance of the furnace plate directly influences the thermal efficiency of the burner. For example, the metal infrared combustion plate disclosed in chinese utility model patent No. CN201320445519.1 (publication No. CN 203413637U) is a furnace plate, and the metal infrared combustion plate includes a combustion panel, a plurality of bosses are provided on the upper surface of the combustion panel, and one or more through holes are provided in the center of each boss and/or on the plane around each boss. The upper surface of this metal infrared combustion board has increased the surface area of burning board through setting up a plurality of boss structure, and then has increased radiant energy, reduces the culinary art time.

However, the metal infrared combustion plate in the above patent still has the following defects: 1. because the aperture of the fire through hole on the boss is the same as that of the fire through hole on the combustion panel, the hole resistance of each fire through hole is the same, the heat generated by combustion in the hole is the same as that of the thermal lift force, only common flame is generated on the combustion panel in the use process, infrared combustion without flame is generated on the combustion panel after the heat is burnt, the combustion is mainly carried out by heating in a thermal radiation mode, the boss is additionally arranged, the surface area of the combustion plate is only increased, and the heat efficiency is further improved; 2. the monoblock metal plate in this patent, because the heat conductivility of metal sheet is good, so the temperature at its boss top and the bottom of metal sheet receive the temperature of gas face very close, so the temperature of combustion plate can not be high, otherwise will produce the tempering phenomenon (burning below the combustion plate), so the combustion plate of this patent can only rely on boss structure, increase area, increase the thermal efficiency by heat radiation, and owing to be monoblock metal, so, preheat the process very slowly, otherwise preheat too fast, can break the heat balance, will produce the tempering, structural problems such as flame still can appear leaving in preheating the process. After use, the combustion plate can keep higher temperature for a longer time and is cooled slowly.

Disclosure of Invention

The invention aims to solve the technical problem of providing a combustor capable of reducing noise and eliminating noises aiming at the current situation of the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a combustor, includes stove board, furnace end and gas nozzle, the inside premixing chamber that is formed with of furnace end, gas nozzle is linked together with premixing chamber, the stove board sets up in the furnace end and lies in premixing chamber's upper portion, be equipped with a plurality of through-holes that link up its wall thickness on the stove board, its characterized in that: and an anechoic plate is transversely arranged in the premixing cavity, is positioned below the furnace plate and is provided with a plurality of anechoic holes penetrating through the wall thickness of the anechoic plate.

Preferably, the distance between the sound-absorbing plate and the furnace plate is 1 mm-20 mm. If less than 1mm, the ventilation of the gas will be affected, and if more than 20mm, the ability of the anechoic plate to interfere with the combustion frequency will be affected.

When the number of the through holes on the furnace plate is small and the combustion power is large, at least two silencing plates are arranged at intervals from top to bottom in sequence, the distance between every two adjacent silencing plates is larger than the wall thickness of each silencing plate so as to ensure that no resistance is generated, the silencing holes can convert current and interfere the combustion frequency, and the silencing holes on the two adjacent silencing plates are staggered or are arranged in the vertical direction correspondingly;

however, the cost of the plurality of muffling plates is high, so that the muffling plate is a single plate when the number of through holes on the furnace plate is large and the furnace plate is burnt at normal power.

In order to stabilize the flame of the furnace plate, a fire stabilizing ring with an inverted L-shaped section is arranged in the furnace end, the vertical part of the fire stabilizing ring is arranged around the periphery of the furnace plate, and the horizontal part of the fire stabilizing ring is positioned above the furnace plate. Because the gas is blocked by the flame stabilizing ring, the gas flows back after being blocked by the flame stabilizing ring and is in mixed contact with newly sprayed gas, so that flame is not easy to extinguish away from flame, and the flame stabilizing effect is achieved.

In order to further improve the heat efficiency, the furnace head is also provided with a fire assisting ring surrounding the periphery of the fire stabilizing ring.

The fire-assisting ring can be one, preferably, the fire-assisting ring has at least two and is arranged along the radial of the furnace plate at intervals in sequence, each fire outlet is arranged on the fire-assisting ring, and the fire outlets on the two adjacent fire-assisting rings are arranged in a staggered manner in the circumferential direction. Flame is sprayed from a fire outlet on the fire-assisting ring and can be blocked by the peripheral fire-assisting ring, and the flame can flow to the fire outlet of the peripheral fire-assisting ring after turning to be discharged, so that the residence time and area of the flame at the bottom of the pot can be larger, the flame can burn the fire-assisting ring, the temperature of the flame is connected with the temperature of the fire-assisting ring in series, the high-temperature series combustion effect is achieved, the bottom of the pot is heated by the high-temperature flame, and the heat efficiency is improved again.

In order to prevent the gas from being burnt insufficiently, the burner also comprises a blower which can introduce air into the premixing cavity. The air blown by the blower can also reduce the temperature of the air receiving surface of the furnace plate and prevent the occurrence of a backfire phenomenon.

In order to improve the heat efficiency, the furnace plate comprises a panel, a boss is arranged on the panel, the upper end face of the boss is higher than the upper end face of the panel, the through holes comprise first through holes and second through holes, a plurality of vertical through first through holes are formed in the panel, second through holes penetrating through the wall thickness of the panel and the boss are further formed in the panel, the first through holes are formed in the periphery of each second through hole, and the area of each second through hole is larger than that of each first through hole.

Big, the second through-hole and the first through-hole in little aperture have set up ingeniously on the stove board, therefore during the use, utilize the characteristics that first through-hole resistance is big, thermal lift is little, most gas is detained at the surface combustion of panel and heats the boss on the stove board, simultaneously with the help of the characteristics that the resistance of second through-hole is little, downthehole gas thermal lift is big, the gas of the high temperature after the heating upwards spout fast in the second through-hole, and carry out high temperature combustion above the stove board, the flame combustion that forms the high temperature series connection of gas blowout from the second through-hole promptly.

Therefore, the boss can be effectively heated by the combustion of the first through hole by utilizing the matching of the first through hole and the second through hole, so that the combustor forms high-temperature series combustion, the temperature of combustion flame is greatly improved, the heat efficiency is improved, the heating is carried out by thermal radiation and the flame combustion, and the formed high-temperature series combustion ensures that the combustion temperature of the whole flame is high, the combustion efficiency is higher, and the higher the combustion temperature is, the higher the heat efficiency is; the normal combustion is only about 600 ℃, the infrared combustion is about 800 ℃, although the thermal efficiency of the infrared combustion is very high, and few flowing air takes away heat, the effective distance of the infrared combustion is very short, generally only a few mm, while the pot body area in the effective range of the infrared combustion is very small, so the general thermal efficiency is only 30-42%;

the general flame combustion can reach more than 1000 ℃ through strong wind and violent combustion of a large amount of fuel gas, but most of heat can be taken away by strong ventilation, so that the heat efficiency is only 20-30%;

the high-temperature series combustion heating furnace plate is 500-600 ℃, and simple premixed combustion is adopted, so that the temperature of flame can reach more than 1000 ℃, the high-temperature zone of flame combustion is more than 10cm, the whole bottom surface of a pot can be completely covered, the heat taken away by flowing air is little, the heat efficiency can be 70-80%, and the cooking time is saved for a user;

in addition, the boss is arranged to increase the axial height of the second through hole, the distance from the upper end face of the second through hole to the air receiving face of the panel (namely, the lower end face of the panel) is longer, when the temperature of the top of the second through hole is higher, the temperature of the air receiving face of the panel can still be kept lower, and the probability of backfire is reduced.

Although the apertures of the first through hole and the second through hole are different, the heat efficiency can be improved, the arrangement of the large and small holes and the combustion gas in the second through hole are heated to form flame combustion, so that a flute effect is easily caused, and whistling and resonance are generated; in addition, the noise is generated at the moment when the gas with lower temperature meets the gas with higher temperature on the furnace plate, and the noise elimination plate of the invention achieves the purposes of noise reduction and elimination by carrying out current transformation and interference on the combustion gas before combustion and controlling the combustion working frequency, thereby improving the problems of combustion noise and combustion resonance of the combustor, reducing the noise of the combustion noise to be below 65 decibels, greatly improving the working environment of people and reducing the pollution of the noise to the environment.

In the above aspect, the area of each second through hole is denoted as a, and the area of each first through hole is denoted as B, where a > 1.5B. If A is less than 1.5B, common flame combustion or infrared combustion can be generated, and high-temperature series combustion cannot be formed.

Preferably, A<51mm²If it exceeds 51mm²The burner can be bulky and heavy, which can be impractical, and the combustion noise can be loud.

In order to improve the stability of combustion, the second through hole is a through hole with a large top and a small bottom, so that the flow rate of combustion gas (mixed gas and air) can be reduced.

In order to facilitate processing and manufacturing, the panel is a one-piece plate-shaped body, a plurality of first insertion holes are formed in the panel, a hollow cylindrical body is inserted into each first insertion hole, the hollow part of the cylindrical body forms the second through hole, the upper end face of the cylindrical body is higher than the upper end face of the panel, and the cylindrical body is exposed out of the first insertion holes to form the boss.

In order to further improve the thermal efficiency of the furnace plate, a plurality of second insertion holes are further formed in the panel, hollow bar-shaped bodies are inserted into the second insertion holes, the hollow parts of the bar-shaped bodies form the first through holes, and the upper end faces of the bar-shaped bodies are higher than the upper end faces of the panel and lower than the upper end faces of the bosses. This kind of design of first through-hole, first, has improved the condition that first through-hole is blockked up greatly, and second comes, and the burning of first through-hole can the effectual second through-hole of heating hollow columnar body, reaches high temperature series connection burning, has improved the thermal efficiency of burning.

Although the integrated plate-shaped body is convenient to process and manufacture, the initial heating speed of the panel is slow, the phenomenon of flame leaving is easy to generate, and the cooling speed of the subsequent panel is also slow in the design mode of the whole plate, so in order to solve the problem, the panel is preferably a metal plate and comprises a first plate body and a second plate body which are sequentially and alternately overlapped in the front-back direction, the first through hole is formed in the first plate body, and the second through hole is formed in the second plate body. The panel components of a whole that can function independently design like this, by a plurality of first plate bodys and a plurality of second plate body in proper order in turn fold and press the setting, first plate body and second plate body are for the monoblock platelike body, and heating and cooling speed are very fast.

The furnace plate formed by laminating the metal sheets has relatively poor heat conducting performance due to the existence of gaps among the metal sheets, the temperature of the top of the panel is five or six hundred degrees, the gas receiving surface (the lower end surface of the panel) is only one or two hundred degrees (the gas receiving surface is cooled by wind and gas, and the top of the panel is heated by combustion), so that the gas is heated to five or six hundred degrees when passing through the boss of the furnace plate, and then the gas is subjected to high-temperature series combustion, so that the temperature of the combustion flame is very high, an unexpected combustion effect is achieved, and the heat efficiency reaches seven to eighty percent which is difficult to be confident.

The first through hole which is vertically through can be directly formed in the first plate body, but in order to further improve the heating and cooling speed of the panel, preferably, the first plate body further comprises a first lath and a second lath which are arranged in a front-back direction in an overlapped mode, an air inlet groove is formed in the bottom of the first lath, an air outlet groove is formed in the top of the second lath, and the air inlet groove and the air outlet groove at least partially correspond to each other in the front-back direction in the overlapped state of the first lath and the second lath so as to form the first through hole. After entering from the air inlet groove, the combustion gas flows into the air outlet groove and finally flows out of the air outlet groove when flowing to the air outlet groove and the part corresponding to the air inlet groove; and the first plate body is further designed into a thin sheet in a split mode, so that the heating and cooling speeds of the panel are further improved.

The second plate body can be directly provided with a vertically through second through hole, but in order to further improve the heating and cooling speed of the panel, preferably, the second plate body further comprises a third plate strip, a fourth plate strip and a fifth plate strip which are arranged in a front-back direction in an overlapped manner, the fourth plate strip comprises a plurality of plate blocks which are sequentially arranged along the left-right direction, a gap is formed between every two adjacent plate blocks, so that the second through hole is formed by the two adjacent plate blocks, the third plate strip and the fifth plate strip which are surrounded by the third plate strip and the fifth plate strip, and the part of the third plate strip, the fourth plate strip and the fifth plate strip which is exposed out of the upper surface of the panel after the second through hole is formed by the third plate strip, the fourth plate strip and the fifth plate strip is the boss. In this way, the second plate body is also further designed into a thinner sheet in a split mode, and the heating and cooling speed of the panel is further improved.

Compared with the prior art, the invention has the advantages that: the silencing plate is arranged below the furnace plate, namely along the flowing direction of the airflow, the silencing plate is positioned at the upstream of the furnace plate, and the silencing plate is provided with a plurality of silencing holes, so that before gas is combusted, the silencing holes on the silencing plate carry out current transformation and interference on the airflow, and the purposes of noise reduction and silencing can be achieved.

Drawings

FIG. 1 is a sectional view of a burner of embodiment 1 of the present invention;

FIG. 2 is a top view of the furnace plate of FIG. 1;

FIG. 3 is a cross-sectional view of FIG. 2;

FIG. 4 is an enlarged view taken at A in FIG. 2;

FIG. 5 is a front view of the fourth slat of FIG. 2;

FIG. 6 is a front view of the third or fifth panel of FIG. 2;

FIG. 7 is a front view of the second slat of FIG. 2;

FIG. 8 is a front view of the first slat of FIG. 2;

FIG. 9 is a top view of the anechoic panel of FIG. 1;

FIG. 10 is a top view of the setter plate of FIG. 1;

FIG. 11 is a front view of a fourth slat of embodiment 2 of the present invention;

FIG. 12 is a top view of an oven plate according to example 3 of the present invention;

fig. 13 is a cross-sectional view of fig. 12.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

Example 1

As shown in fig. 1, the burner of the preferred embodiment includes a burner 2, a gas nozzle 3, a blower 6, and a plate a, the burner 2 is installed on a lower end surface of a kitchen range 20, and a supporter 22 for supporting a pot 23 is provided on the range 20.

A premixing cavity 21 is formed inside the burner 2, the air outlet end of the gas nozzle 3 is communicated with the premixing cavity 21, the air blower 6 can blow air into the premixing cavity 21, and the furnace plate A is arranged in the burner 2 and located at the upper part of the premixing cavity 21. The air blown in by the air blower 6 is used for ensuring the full combustion of fuel gas, and can also reduce the temperature of the lower surface of the furnace plate A, so that the phenomenon of tempering caused by overhigh temperature of the lower surface of the furnace plate A is prevented.

Referring to fig. 2 to 8, the furnace plate a includes a panel 1, the panel 1 is made of metal, a boss is disposed on the panel 1, an upper end surface of the boss is higher than an upper end surface of the panel 1, a plurality of through holes penetrating a wall thickness of the panel 1 are disposed on the panel 1, the through holes include first through holes 11 and second through holes 12, the second through holes 12 are disposed on the boss, that is, the second through holes 12 penetrate the panel 1 and the boss, the panel 1 around each second through hole 12 is disposed with first through holes 11, an area of each second through hole 12 is larger than an area of each first through hole 11, an area of each second through hole 12 is denoted as a, an area of each first through hole 11 is denoted as B, and an area of each first through hole 11 is denoted as B>1.5B and A<51mm²。

The boss has been heated in the burning of first through-hole 11, makes the gas get into the high temperature series combustion, has greatly improved the thermal efficiency, and the boss has also increased the axial height of second through-hole 12 simultaneously for the distance that the up end of second through-hole 12 is far away from the face of receiving gas (being the lower terminal surface of panel 1) of panel 1, when the temperature at second through-hole 12 top is higher, the temperature of the face of receiving gas of panel 1 still can keep lower, has reduced the probability that the tempering phenomenon takes place.

Preferably, the aperture of the first through hole 11 is smaller than 1.5 mm, so that even if the soup is spread on the oven plate a, the soup cannot enter the inside of the first through hole 11, and only stays on the upper surface of the panel 1, so that the first through hole 11 is not blocked, and the user can clean the dirt conveniently.

In this embodiment, the panel 1 includes the first plate 15 and the second plate 16 that are sequentially and alternately stacked in the front-rear direction, that is, the panel 1 is sequentially and alternately stacked by the plurality of first plates 15 and the plurality of second plates 16, the first through hole 11 is opened on the first plate 15, and the second through hole 12 is opened on the second plate 16.

The first plate body 15 further comprises a first lath 151 and a second lath 152 which are arranged in an overlapped mode, an air inlet groove 1511 is formed in the bottom of the first lath 151, an air outlet groove 1521 is formed in the top of the second lath 152, and the air inlet groove 1511 and the air outlet groove 1521 at least partially correspond to each other in the front-back direction to form a first through hole 11 in the overlapped state of the first lath 151 and the second lath 152. After entering from the inlet groove 1511, the combustion gas flows into the outlet groove 1521 and the corresponding portion of the inlet groove 1511, enters the outlet groove 1521 and finally flows out from the outlet groove 1521 (see the direction of the arrow shown in fig. 3).

The second plate 16 further includes a third lath 161, a fourth lath 162 and a fifth lath 163 sequentially overlapped in the front-rear direction, the fourth lath 162 includes a plurality of plates 1622 sequentially arranged in the left-right direction, a gap 1623 is provided between two adjacent plates 1622, the second through hole 12 is defined by the two adjacent plates 1622, the third lath 161 and the fifth lath 163, and the portion exposed on the upper surface of the panel 1 after the second through hole 12 is defined by the third lath 161, the fourth lath 162 and the fifth lath 163 is a boss.

The third strip 161 and the fifth strip 163 may have the same structure, and of course, the structure of the third strip 161 and the fifth strip 163 is not limited to the structure shown in fig. 6 as long as the second through hole 12 can be formed to surround the gap 1623 in the front-rear direction, for example, the third strip 161 and the fifth strip 163 are both a one-piece strip.

The plurality of first strip strips 151, the plurality of second strip strips 152, the plurality of third strip strips 161, the plurality of fourth strip strips 162 and the plurality of fifth strip strips 163 are stacked together, and then the plurality of first strip strips 151 are combined with one or more stacked second strip strips 152 to form the first through holes 11, and the third strip 161, the plurality of fourth strip 162 and the plurality of fifth strip strips 163 are arranged in the same manner, so that the panel 1 with a certain width and thickness is manufactured. I.e. the number of corresponding slats can be set as desired to form the desired size of the through-hole.

The first strip 151, the second strip 152, the third strip 161, the fourth strip 162 and the fifth strip 163 are provided with positioning holes 17, the positioning holes 17 on two adjacent strips are correspondingly arranged, and the first strip 151, the second strip 152, the third strip 161, the fourth strip 162 and the fifth strip 163 are positioned together through metal strips penetrating through the positioning holes 17.

As can be seen from the above, the panel 1 is formed by laminating a plurality of metal sheets (the first strip 151, the second strip 152, the third strip 161, the fourth strip 162 and the fifth strip 163), and the heating and cooling speed of the metal sheets is fast, so that the furnace plate a can be heated quickly; and after the use, the cooling is rapid.

In order to make the burner have better fire stabilizing effect, as shown in fig. 1, a fire stabilizing ring 4 with an inverted L-shaped cross section is arranged in the burner 2, a vertical part 41 of the fire stabilizing ring 4 is arranged around the periphery of the furnace plate a, and a horizontal part 42 of the fire stabilizing ring 4 is positioned above the furnace plate a. Because the gas is blocked by the fire stabilizing ring 4, the gas flows back after being blocked by the fire stabilizing ring 4 and is in mixed contact with newly sprayed gas, so that flame is not easy to extinguish away from flame, and the effect of stabilizing the fire is achieved.

As shown in fig. 1, the burner 2 is further provided with a fire assisting ring 5 surrounding the periphery of the fire stabilizing ring 4, the fire assisting ring 5 is attached to the bottom of the pan under the action of a spring plate or other auxiliary facilities, the two fire assisting rings 5 are sequentially arranged at intervals along the radial direction of the furnace plate a (namely, the inner and outer fire assisting rings are sleeved), each fire assisting ring 5 is provided with a fire outlet (not shown in the figure), and the fire outlets on two adjacent fire assisting rings 5 are arranged in a staggered manner in the circumferential direction. Flame is sprayed from a fire outlet on the built-in fire-assisting ring 5 and can be blocked by the peripheral fire-assisting ring 5, and the flame can flow to the fire outlet of the peripheral fire-assisting ring 5 after turning to be discharged, so that the residence time and area of the flame at the bottom of the pot can be larger, the flame can burn the fire-assisting ring 5, the temperature of the flame is connected with the temperature of the fire-assisting ring 5 in series, the effect of high-temperature series combustion is achieved, the bottom of the pot is heated by the high-temperature flame, and the heat efficiency is improved again. Of course, when the power of the burner is small, the ignition aid ring 5 is not arranged; the number of the ignition aid rings 5 is not limited to two, and may be one or more than two.

As shown in fig. 1, 9 and 10, in order to reduce noise, an acoustic panel 71 is transversely disposed in the premix chamber 21, and the acoustic panel 71 is disposed below, preferably directly below, the furnace plate a, so that the flame is relatively uniform, and the distance between the acoustic panel 71 and the furnace plate a is 3mm or 5 mm.

The muffling plate 71 is provided with a plurality of muffling holes 711 penetrating through the wall thickness of the muffling plate 71, the muffling holes 711 can play a role in converting flow and disturbing combustion frequency, the muffling holes 711 on the muffling plate 71 can be the same in size or different in size, and the muffling holes 711 can be vertically arranged or obliquely arranged.

If the combustion is performed with common power or the number of the through holes on the furnace plate is large, only one silencing plate 71 can be arranged, when the number of the through holes on the furnace plate is small and the combustion power is large, at least two silencing plates 71 are arranged and are sequentially arranged from top to bottom at intervals, the distance between every two adjacent silencing plates 71 is larger than the wall thickness of each silencing plate 71, so that no resistance is generated in the silencing holes 711 and between every two adjacent silencing plates 71, and the silencing holes 711 on the two adjacent silencing plates 71 can be staggered or can be vertically arranged correspondingly.

The lower part of the muffling plate 71 is also provided with an even burning plate 72, the even burning plate 72 is provided with a plurality of third through holes 721, and the hole arrays formed by the third through holes 721 are actually debugged and fixed according to the power of the burner, the size of the furnace plate, the size of the fan and other factors.

Example 2

As shown in fig. 11, in the present embodiment, the structure of the fourth slat 162 is different from that of embodiment 1, and the other embodiment can refer to embodiment 1.

The fourth slat 162 includes a plurality of plates 1622 that set gradually along the left-right direction, and each plate 1622 inclines towards the direction that is close to each other from top to bottom towards the wall 16221 of adjacent plate 1622 to form the clearance 1623 that the longitudinal section is the toper between two adjacent plates 1622, and the second through-hole 12 that this embodiment formed is big-end-up's through-hole promptly, can reduce the velocity of flow of burning gas (gas and air after the mixture) like this, improves the stability of burning. The longitudinal section of the gap 1623 is not limited to a taper shape, and may be, for example, a stepped hole whose diameter gradually decreases from top to bottom, and each hole of the stepped hole may be a rectangular hole or a trapezoidal hole whose upper portion is large and lower portion is small.

Example 3

As shown in fig. 12 and 13, in the present embodiment, the structure of the furnace plate a is different from that of embodiment 1, and otherwise, embodiment 1 can be referred to.

In this embodiment, the panel 1 is a whole plate, the panel 1 may be made of metal, ceramic, powder alloy, or the like, and the ceramic material and the powder alloy material have poor heat conductivity, so that the panel may be made into a whole plate, but the ceramic material has poor mechanical strength and is easy to break, weather, peel, and the like; as for the powder alloy material, depending on the metal content, if the metal content is high, the properties thereof are close to those of a metal plate, and if the metal content is low, the same defect as that of a ceramic plate is caused, but the cost is low.

The panel 1 is provided with a plurality of first jacks 14 and a plurality of second jacks 13, each first jack 14 is inserted with a hollow column 141, the hollow part of the column 141 forms a second through hole 12, the upper end surface of the column 141 is higher than the upper end surface of the panel 1, and the part of the column 141 exposed out of the first jack 14 forms a boss.

Each second insertion hole 13 is inserted with a hollow bar-shaped body 131, the hollow part of the bar-shaped body 131 forms a first through hole 11, and the upper end surface of the bar-shaped body 131 is higher than the upper end surface of the panel 1 and lower than the upper end surface of the boss. The first through hole 11 can be directly formed in the panel 1, that is, the second insertion hole 13 can be used as a first through hole, and the bar-shaped body 131 does not need to be inserted therein, but the first through hole 11 of the present embodiment can be formed in such a way that the bar-shaped body 131 can be directly removed for replacement after the first through hole 11 is blocked; the first through holes 11 are used for burning and heating the hollow cylindrical body 141, so that the burner enters a high-temperature serial combustion state, and the purpose of improving the heat efficiency is achieved.

The apertures of the first and second insertion holes can be made to be the same, and the opening sizes of the strip-shaped body and the column-shaped body can meet the requirements of the first through hole and the second through hole, or the first insertion hole 14 and the second insertion hole 13 with different apertures can be formed as shown in fig. 13, that is, the large and small insertion holes.

Although the integral structure of the panel 1 is convenient for processing and manufacturing, the panel 1 is designed in a way that the initial heating speed of the panel 1 is slow, the phenomenon of flame separation is easy to occur, and the cooling speed of the subsequent panel 1 is slow.

Directional terms such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", and the like are used in the description and claims of the present invention to describe various example structural parts and elements of the present invention, but these terms are used herein for convenience of description only and are determined based on example orientations shown in the drawings, so these directional terms are for explanation only and should not be construed as limiting.

Claims

1. A burner, comprising a furnace plate (A), a burner head (2) and a gas nozzle (3), wherein a premixing cavity (21) is formed inside the burner head (2), and the gas nozzle (3) It is communicated with the premixing cavity (21), the furnace plate (A) is arranged in the furnace head (2) and is located on the upper part of the premixing cavity (21), and the furnace plate (A) is provided with a plurality of through-holes. The through hole with thick wall is characterized in that: the premixing chamber (21) is laterally provided with a muffler plate (71), the muffler plate (71) is located below the furnace plate (A), and the muffler plate (71) is The plate (71) is provided with a plurality of muffling holes (711) penetrating through its wall thickness.

2 . The burner according to claim 1 , wherein the distance between the muffler plate ( 71 ) and the furnace plate (A) is 1 mm˜20 mm. 3 .

3. The burner according to claim 1, characterized in that: there are at least two mufflers (71), which are arranged at intervals from top to bottom, between two adjacent mufflers (71). The distance between them is greater than the wall thickness of each muffler plate (71), and the muffler holes (711) on two adjacent muffler plates (71) are staggered or arranged correspondingly in the vertical direction; or, the muffler plates (71) ) is a piece.

4. The burner according to claim 1, characterized in that: the burner (2) is provided with an L-shaped fire-stabilizing ring (4) whose cross section is inverted, and the vertical direction of the fire-stabilizing ring (4) is The part (41) is arranged around the outer circumference of the furnace plate (A), and the transverse part (42) of the fire stabilizing ring (4) is located above the furnace plate (A).

5. The burner according to claim 4, characterized in that: the burner head (2) is further provided with a fire aid ring (5) surrounding the outer periphery of the fire stabilization ring (4).

6. The burner according to claim 5, characterized in that: there are at least two said fire-assist rings (5) and are arranged at intervals along the radial direction of the furnace plate (A), and each said fire-assist ring (5) ) are provided with a fire outlet, and the fire outlets on the two adjacent fire aid rings (5) are arranged at a circumferential dislocation.

7. The burner according to claim 1, characterized in that it further comprises a blower (6) capable of introducing air into the premixing chamber (21).

8 . The burner according to claim 1 , wherein the furnace plate comprises a panel ( 1 ), and a boss is provided on the panel ( 1 ). The upper end surface is higher than the upper end surface of the panel (1), the through hole includes a first through hole (11) and a second through hole (12), and a plurality of vertically penetrating first through holes are opened on the panel (1). through holes (11), and the panel (1) is also provided with second through holes (12) penetrating through its wall thickness and the boss, and the periphery of each second through hole (12) is provided with the aforementioned first through holes (12). A through hole (11), the area of each of the second through holes (12) is larger than the area of each of the first through holes (11).

9. The burner according to claim 8, characterized in that: the area of each of the second through holes (12) is denoted as A, and the area of each of the first through-holes (11) is denoted as B, and A> 1.5B.

10. The burner according to claim 9, characterized in that: A<51 mm ² .

11. The burner according to claim 8, wherein the second through hole (12) is a large upper and lower small through hole.

12 . The burner according to claim 8 , wherein the panel ( 1 ) is a monolithic plate-shaped body, and a plurality of first insertion holes ( 14 ) are opened on the panel ( 1 ), and each A hollow columnar body (141) is inserted into the first insertion hole (14), the hollow part of the columnar body (141) forms the second through hole (12), and the columnar body (141) The upper end surface of the columnar body (141) is higher than the upper end surface of the panel (1), and the portion of the columnar body (141) exposed to the first insertion hole (14) forms the boss.

13. The burner according to claim 12, characterized in that: the panel (1) is further provided with a plurality of second insertion holes (13), and each of the second insertion holes (13) is inserted into each of the second insertion holes (13). There is a hollow strip body (131), the hollow part of the strip body (131) forms the first through hole (11), and the upper end surface of the strip body (131) is higher than the upper surface of the panel (1). The end face is lower than the upper end face of the boss.

14. The burner according to claim 8, characterized in that: the panel (1) is a metal plate, and the panel (1) comprises first plate bodies (15) and In the second plate body (16), the first through holes (11) are opened on the first plate body (15), and the second through holes (12) are opened on the second plate body (16).

15. The burner according to claim 14, characterized in that: the first plate body (15) further comprises a first slat (151) and a second slat (152) superimposed in the front-rear direction , the bottom of the first slat (151) is provided with an air inlet groove (1511), the top of the second slat (152) is provided with an air outlet groove (1521), and the first slat (151) and the second slat (152) are provided with an air outlet groove (1521). When the two slats (152) are superimposed, the air inlet groove (1511) and the air outlet groove (1521) correspond at least partially in the front-rear direction to form the first through hole (11).

16. The burner according to claim 15, characterized in that: the second plate body (16) further comprises a third slat (161) and a fourth slat (162) superimposed in the front-rear direction and a fifth slat (163), the fourth slat (162) includes a plurality of plates (1622) arranged in sequence along the left-right direction, and there is a gap (1623) between two adjacent plates (1622), so that the The two adjacent plates (1622) together with the third slat (161) and the fifth slat (163) enclose the second through hole (12). The third slat (161), the fourth slat (163) 162) The part exposed on the upper surface of the panel (1) after the fifth slat (163) surrounds the second through hole (12) is the boss.