CN212227023U

CN212227023U - Cleaning type combustor

Info

Publication number: CN212227023U
Application number: CN202020876870.6U
Authority: CN
Inventors: 陈毅; 陈明军
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-22
Filing date: 2020-05-22
Publication date: 2020-12-25
Anticipated expiration: 2030-05-22

Abstract

A cleaning burner comprises an outer fire ejector, a central fire ejector, a burner base, a central fire cover and an outer fire cover assembly, wherein a central fire connector and an outer fire connector are arranged on the upper portion of the burner base, a central fire ejector connector and an outer fire ejector connector are arranged on the lower portion of the burner base, the central fire connector is communicated with the central fire ejector connector, the outer fire connector is communicated with the outer fire ejector connector, the central fire cover covers the central fire connector of the burner base, the outer fire cover assembly is sleeved on the outer fire connector of the burner base, the air outlet end of the central fire ejector is connected with the central fire ejector connector of the burner base, and the air outlet end of the outer fire ejector is connected with the outer fire ejector connector of the burner base. By using the utility model, the outer ring fire cover component and the central fire cover can be conveniently taken and put on the stove head seat, so as to be beneficial to cleaning the stove surface.

Description

Cleaning type combustor

Technical Field

The utility model relates to a cleaning type combustor.

Background

At present, the furnace end of combustor on the market generally is 100 diameter high feet, 120 diameter high feet, aircraft type furnace end, 100 diameter high feet furnace end, 120 diameter high feet furnace end and traditional aircraft type furnace end (or called siemens or cherry blossom style furnace end) must splice when the equipment, and most concatenation department adopts plane flange face connection structure, and this structure requires very high to the roughness, or need beat glue and seal up, and structural stability is relatively poor.

The 100-diameter high-foot furnace end and the 120-diameter high-foot furnace end of the existing combustor are easy to accumulate impurities and liquid and rust. Meanwhile, the fire distribution cavity of the burner is of a fixed structure, the temperature rise of the burner is relatively high, certain influence is caused on internal accessories of the stove, and the fire cover part cannot be taken down due to the fact that the fire distribution cavity is of a fixed structure, and cleaning operation is not facilitated. The traditional airplane type burner has a complex structure, excessive turning of a gas flow channel and large loss of convection velocity, and is not beneficial to the requirement of high-power combustion; and the flange face connection structure that partial fire chamber part also adopted has certain influence to structural stability, and the cost is higher relatively simultaneously.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome the above-mentioned defect that prior art exists, provide a type of keeping a public place clean combustor convenient to it is clean.

The utility model provides a technical scheme that its technical problem adopted is:

a cleaning burner comprises an outer fire ejector, a central fire ejector, a burner base, a central fire cover and an outer fire cover assembly, wherein a central fire connector and an outer fire connector are arranged on the upper portion of the burner base, a central fire ejector connector and an outer fire ejector connector are arranged on the lower portion of the burner base, the central fire connector is communicated with the central fire ejector connector, the outer fire connector is communicated with the outer fire ejector connector, the central fire cover covers the central fire connector of the burner base, the outer fire cover assembly is sleeved on the outer fire connector of the burner base, the air outlet end of the central fire ejector is connected with the central fire ejector connector of the burner base, and the air outlet end of the outer fire ejector is connected with the outer fire ejector connector of the burner base.

Further, the outer fire cover assembly comprises an outer fire cover and an outer fire coverThe center of the outer ring fire cover is provided with a through hole, and the upper surface of the outer ring fire cover is an inverted cone surface, so that the heat of the center fire can be gathered, and the heat efficiency is improved; a through hole is also formed in the center of the central fire cover, the central fire cover is positioned in the central through hole of the outer ring fire cover, an annular gap exists between the outer ring fire cover and the central fire cover, and the width of the annular gap can be 5-15 mm; the outer ring fire cover covers the outer ring fire cover base, the outer ring fire cover base is of an integrally formed structure and comprises a base inner ring, a base outer ring, a base annular bottom plate and a support ring, the base inner ring is fixedly connected with the inner edge of the base annular bottom plate, the base outer ring is fixedly connected with the outer edge of the base annular bottom plate, the support ring is positioned below the base annular bottom plate, the outer edge of the support ring is fixedly connected with the inner edge of the base annular bottom plate through at least two connecting pins, a gap is formed between every two adjacent connecting pins, a gap between every two adjacent connecting pins is a secondary air channel, the gap between every two adjacent connecting pins is communicated with an annular gap between the outer ring fire cover and the central fire cover, a through hole is formed in the center of the support ring, a through hole is formed in the center of the base inner; the annular base plate of the base comprises a U-shaped connecting base plate and a fan-shaped connecting base plate, two ends of the U-shaped connecting base plate are fixedly connected with two ends of the fan-shaped connecting base plate respectively, and the U-shaped connecting base plate and the fan-shaped connecting base plate are connected through a connecting rodInclined plane transitionThe utility model discloses a fan-shaped connection bottom plate, the upper surface of bottom plate is connected to the U-shaped, the upper surface of U-shaped connection bottom plate is higher than the upper surface of fan-shaped connection bottom plate, the base inner ring, the base outer loop, the cavity that the outer loop fire lid encloses is outer fire mixing chamber, the U-shaped connection bottom plate, the base inner ring, the base outer loop, the cavity that the outer loop fire lid encloses divides the fire chamber for outer fire, outer fire divides the fire chamber to be used for shunting the air current that flows from outer fire mixing chamber to outer fire and goes out the fire hole, the middle part of fan-shaped connection bottom plate is equipped with the furnace end connector that runs through fan-shaped connection bottom.

Further, the outer surface of the outer ring fire connecting port of the furnace head base is provided with a first annular step with an upward step surface, the step surface of the first annular step is a horizontal plane and is used for ensuring the positioning of the outer ring fire cover base in the vertical direction, the furnace end connecting port of the fan-shaped connecting bottom plate is sleeved on the first annular step, the bottom surface of the furnace end connecting port of the fan-shaped connecting bottom plate is tightly attached to the step surface of the first annular step, and the vertical surface of the first annular step is tightly attached to the inner surface of the outer wall of the furnace end connecting port of the fan-shaped connecting bottom plate, so that the radial sealing of the outer ring fire connecting port of the furnace head base and the furnace.

Further, the central fire cover can be an integrated into one piece structure, the central fire cover comprises a central fire cover inner ring and a central fire cover outer ring, the outer edge of the central fire cover inner ring is fixedly connected with the upper edge of the central fire cover outer ring, a central fire hole is uniformly distributed on the outer side wall of the central fire cover outer ring, the outer surface of the central fire cover outer ring is provided with a second annular step with a downward step surface, and the inner surface of the central fire cover inner ring is provided with a third annular step with a downward step surface. The inner surface of the outer wall of the central fire connecting port of the furnace head seat is provided with a fourth annular step with an upward step surface, the top surface of the outer wall of the central fire connecting port of the furnace head seat is tightly attached to the step surface of the second annular step, and the vertical surface of the second annular step is tightly attached to the vertical surface of the fourth annular step, so that the radial sealing of the outer ring of the central fire cover and the outer wall of the central fire connecting port of the furnace head seat is favorably realized. The outer surface of the inner wall of the central fire connecting port of the furnace head seat is provided with a fifth annular step with an upward step surface, the top surface of the inner wall of the central fire connecting port of the furnace head seat is tightly attached to the step surface of the third annular step, and the vertical surface of the third annular step is tightly attached to the vertical surface of the fifth annular step, so that the radial sealing of the inner ring of the central fire cover and the inner wall of the central fire connecting port of the furnace head seat is favorably realized.

The center of the inner ring of the central fire cover is provided with a through hole, and the central through hole of the inner ring of the central fire cover is the central through hole of the central fire cover.

The annular gap between outer ring fire lid and the central fire lid is communicated to the space between the adjacent connection foot, secondary air passageway promptly, and the annular gap between outer ring fire lid and the central fire lid can be introduced the air in the space between the adjacent connection foot, and when the gas mixture of central fire outlet hole spun gas and air on the lateral wall of central fire lid outer loop burnt and produced flame, can promote the fire to the flame that this burning produced. Meanwhile, the gap between the adjacent connecting pins, namely the secondary air channel, can also provide partial combustion promoting air for the outer ring fire (namely flame generated when mixed gas of gas and air sprayed from the outer ring fire outlet hole is combusted).

Further, the outer surface of the outer wall of the central fire connecting port of the burner head base is provided with a sixth annular step with an upward step surface, the step surface of the sixth annular step is a horizontal surface and is used for further ensuring the positioning of the outer ring fire cover base in the vertical direction, the support ring of the outer ring fire cover base is placed on the step surface of the sixth annular step, and the outer wall of the central fire connecting port of the burner head base penetrates through the central through hole of the support ring.

The furnace head seat is provided with an inclined upward inclined plate with a central hole in the center, the inner edge of the inclined upward inclined plate is fixedly connected with the inner wall of the central fire connector of the furnace head seat, the outer edge of the inclined upward inclined plate is fixedly connected with the outer wall of the central fire connector of the furnace head seat, and a cavity defined by the upward surface of the inclined upward inclined plate, the outer surface of the inner wall of the central fire connector of the furnace head seat and the inner surface of the outer wall of the central fire connector of the furnace head seat is an inner cavity of the central fire connector of the furnace head seat. The inner diameter of the inner cavity of the central fire connecting port of the furnace head seat gradually increases from bottom to top along the upward surface of the inclined plate, so that the upward smooth uniform distribution of airflow to the upper part of the inner cavity of the central fire connecting port is facilitated.

Furthermore, the central fire outlet hole on the outer ring of the central fire cover is divided into three layers, the first layer central fire outlet hole and the second layer central fire outlet hole are main central fire outlet holes, and the third layer central fire outlet hole is a flame stabilizing fire hole. The diameter of the central fire hole of the third layer is smaller than that of the central fire hole of the first layer and that of the central fire hole of the second layer. The arrangement of the three-layer central fire outlet holes has the advantages that the central fire cover is low in temperature rise and good in durability, the red fire phenomenon can not occur due to long combustion time, the flame stabilizing effect is good, and the three-layer central fire outlet holes can better adapt to different gas requirements. For the first layer of central fire outlet holes, the center distance between the adjacent central fire outlet holes is 1.5-4 times of the diameter of the fire hole of the first layer of central fire outlet hole; the central fire outlet holes of the second layer and the central fire outlet holes of the first layer are arranged in a staggered mode, the vertical center distance between the central fire outlet holes of the first layer and the central fire outlet holes of the second layer is 0.6-2.5 times of the diameter of the fire hole of the central fire outlet holes of the second layer, the central fire outlet holes of the third layer and the central fire outlet holes of the second layer are arranged in an aligned mode, the vertical center distance between the central fire outlet holes of the second layer and the central fire outlet holes of the third layer is 0.5-2.5 times of the diameter of the central fire outlet holes of the third layer, the main central fire outlet holes are arranged in a shape like a Chinese character 'pin', and two flame stabilizing holes are arranged on the lower portion of the shape like the Chinese character 'pin'. Partial air current in the central fire connecting port of headstock can shunt to in the flame stabilizing fire hole, the mist burning of spun gas and air forms little flame in the flame stabilizing fire hole, little flame is favorable to pulling the flame that the second floor center fire goes out the fire hole from the flame root that the second floor center fire goes out the fire hole, realize the stability that the second floor center fire goes out fire hole department flame, thereby reduce the second floor center fire and go out the emergence of fire hole department jump fire or take off fire phenomenon, ensure the combustion stability of combustor, that is to say, flame stabilizing fire hole can go out the fire hole to the second floor center fire and play the flame stabilizing effect, and simultaneously, flame stabilizing fire hole still can upwards transmit flame. Air between the adjacent flame stabilizing holes can be supplemented to the central fire outlet holes of the second layer and the central fire outlet holes of the first layer, and sufficient combustion is realized.

The inner ring of the central fire cover is also uniformly provided with fire outlets, the outer wall of the central fire connector of the furnace head seat is provided with a secondary air inlet hole of the inner ring of the central fire cover, the center of the inner wall of the central fire connector of the furnace head seat is provided with an air inlet channel, and the secondary air inlet hole of the inner ring of the central fire cover of the outer wall of the central fire connector of the furnace head seat is communicated with the air inlet channel of the center of the inner wall of the central fire connector of the furnace head seat. When the mixed gas of the air and the fuel gas sprayed from the fire outlet hole on the inner ring of the central fire cover is combusted to generate flame, the secondary air inlet hole of the inner ring of the central fire cover on the outer wall of the central fire connecting port of the stove head base can introduce air into the air inlet flow passage in the center of the inner wall of the central fire connecting port of the stove head base, so that the combustion promotion of the flame generated by the mixed gas of the air and the fuel gas sprayed from the fire outlet hole on the inner ring of the central fire cover is realized. Flame generated when airflow sprayed from the fire outlet hole of the inner ring of the central fire cover is combusted at the center of the pot bottom, and the heat efficiency is improved.

Furthermore, a support ring ignition needle through hole and a support ring thermocouple through hole are formed in the support ring of the outer ring fire cover base, a furnace head base ignition needle through hole matched with the support ring ignition needle through hole is formed in the furnace head base, and a furnace head base thermocouple through hole matched with the support ring thermocouple through hole is further formed in the furnace head base. The ignition needle sequentially penetrates through the furnace head seat ignition needle through-jack and the support ring ignition needle through-jack from bottom to top and then extends into an annular gap between the central fire cover and the outer ring fire cover, and the thermocouple sequentially penetrates through the furnace head seat thermocouple through-jack and the support ring thermocouple through-jack from bottom to top and then extends into the annular gap between the central fire cover and the outer ring fire cover. The ignition needle and the thermocouple are mature parts of the existing burner, so the details of the ignition needle and the thermocouple are not described herein. Under the action of the support ring ignition needle through jack and the furnace head seat ignition needle through jack, the ignition needle can perform horizontal direction guiding positioning on the outer ring fire cover base; under the effect of support ring thermocouple through-hole and stove headstock thermocouple through-hole, the thermocouple can carry out the horizontal direction guiding orientation to outer ring fire lid base to prevent the wrong installation, this for preventing slow-witted design, other directions do not have the through-hole and can not install.

Furthermore, the outer surface of the outer ring of the base of the outer ring fire cover base is provided with a seventh annular step with an upward step surface, and the inner surface of the inner ring of the base of the outer ring fire cover base is provided with an eighth annular step with an upward step surface. The outer ring fire cover comprises an outer ring fire cover inner ring, an outer ring fire cover body and an outer ring fire cover outer ring, wherein the upper edge of the outer ring fire cover inner ring is fixedly connected with the inner edge of the outer ring fire cover body, the outer edge of the outer ring fire cover body is fixedly connected with the upper edge of the outer ring fire cover outer ring, the upper surface of the outer ring fire cover body is an inverted conical surface, the taper is 80-140 degrees, an outer ring fire outlet hole is formed in the outer ring fire cover outer ring, a ninth annular step with a downward step surface is arranged on the outer surface of the outer ring fire cover inner ring, the top surface of the base inner ring of the outer ring fire cover base is tightly attached to the step surface of the ninth annular step, and the vertical surface of the eighth annular step is tightly attached to the vertical surface of the ninth annular step, so that the radial sealing between the base inner ring of the outer ring fire; the inner surface of the outer ring fire cover outer ring is provided with a tenth annular step with a downward step surface, the top surface of the base outer ring of the outer ring fire cover base is tightly attached to the step surface of the tenth annular step, and the vertical surface of the seventh annular step is tightly attached to the vertical surface of the tenth annular step, so that the radial sealing between the base outer ring of the outer ring fire cover base and the outer ring fire cover outer ring is favorably realized.

Furthermore, the outer ring fire cover body is provided with a flame connecting hole, one end of the flame connecting hole is communicated with the outer ring fire outlet hole, and the other end of the flame connecting hole extends to the inner ring of the outer ring fire cover.

The air outlet end of the outer ring fire ejector extends into the outer ring fire ejector connecting port of the furnace head seat, the air outlet end of the outer ring fire ejector and the outer ring fire ejector connecting port of the furnace head seat form taper fit, the taper of the outer surface of the air outlet end of the outer ring fire ejector is larger than that of the inner surface of the outer ring fire ejector connecting port of the furnace head seat, the taper of the outer surface of the air outlet end of the outer ring fire ejector is larger than 0 degree and smaller than or equal to 10 degrees, the taper of the inner surface of the outer ring fire ejector connecting port of the furnace head seat is larger than or equal to 0 degree and smaller than or equal to 10 degrees, and sealing between the air outlet end of the outer ring fire ejector and the outer ring.

The air outlet end of the central fire ejector extends into the central fire ejector connecting port of the furnace head seat, the air outlet end of the central fire ejector and the central fire ejector connecting port of the furnace head seat form taper fit, the taper of the outer surface of the air outlet end of the central fire ejector is larger than that of the inner surface of the central fire ejector connecting port of the furnace head seat, the taper of the outer surface of the air outlet end of the central fire ejector is larger than 0 degree and smaller than or equal to 10 degrees, the taper of the inner surface of the central fire ejector connecting port of the furnace head seat is larger than or equal to 0 degree and smaller than or equal to 10 degrees, and sealing between the air outlet end of the central fire ejector and the central fire ejector connecting port of the furnace head seat is achieved.

And a fixed connecting block is arranged between the outer surface of the outer ring fire ejector and the outer surface of the central fire ejector, one end of the fixed connecting block is fixedly connected with the outer surface of the outer ring fire ejector, and the other end of the fixed connecting block is fixedly connected with the outer surface of the central fire ejector, so that the firmness of the integral structure of the outer ring fire ejector and the central fire ejector is facilitated.

The inner diameter of the air outlet end of the outer ring fire ejector is 1.2-2.5 times of the diameter of the throat part of the outer ring fire ejector. The annular distance between the inner wall of the central fire connecting port of the furnace head seat and the outer wall of the central fire connecting port of the furnace head seat is 0.5-1.5 times of the diameter of the throat part of the central fire ejector.

An ejector pipe cover plate is arranged on the outer end face of the air inlet end of the outer ring fire ejector and the outer end face of the air inlet end of the central fire ejector, an outer ring fire fan-shaped air inlet hole and an outer ring fire nozzle entering round hole which are communicated with the air inlet end of the outer ring fire ejector are formed in the ejector pipe cover plate, a central fire fan-shaped air inlet hole and a central fire nozzle entering round hole which are communicated with the air inlet end of the central fire ejector are formed in the ejector pipe cover plate, two annular connecting bosses are arranged on one sides, close to the outer end face of the air inlet end of the outer ring fire ejector and the outer end face of the air inlet end of the central fire ejector, of the ejector pipe cover plate and are outer ring fire connecting annular bosses and central fire connecting annular bosses, the outer ring fire connecting annular bosses extend into the air inlet end of the outer ring fire ejector, the outer end face of the central fire connecting annular boss extends into the air inlet end of the central fire ejector, the outer end face of the ejector pipe cover plate is flat, and, and the flatness is improved. The air inlet end of the outer ring fire ejector is connected with the ejector pipe cover plate through a fastener, the air inlet end of the central fire ejector is connected with the ejector pipe cover plate through a fastener, and the fastener can be a screw and the like.

The vertical distance between the upper end surface of the outer ring fire connecting opening of the furnace head seat and the inner top surface of the outer ring fire cover is 0.5-2 times of the inner diameter of the outer ring fire connecting opening of the furnace head seat.

For a component, the inner surface of the component refers to the surface closer to the central axis of the component and the outer surface of the component refers to the surface farther from the central axis of the component. For the inner ring of the central fire cover, the inner surface of the inner ring of the central fire cover is close to the central shaft of the central fire cover, and the outer surface of the inner ring of the central fire cover is far away from the central shaft of the central fire cover.

A through hole is formed in the center of the inner wall of the central fire connecting port of the furnace head seat, a dry-burning-preventing probe is mounted in the central through hole of the inner wall of the central fire connecting port of the furnace head seat, the lower end of the dry-burning-preventing probe is fixed on a dry-burning-preventing mounting frame, the upper end of the dry-burning-preventing probe extends out of the central through hole of the inner ring of the central fire cover, and the dry-burning-preventing probe mounting; the central hole of the inclined plate is communicated with the central through hole of the inner wall of the central fire connecting port of the furnace head seat. The anti-dry heating probe is a mature part of the existing burner, so the anti-dry heating probe is not described in detail herein.

The stove head seat is provided with a first connecting hole connected with the panel or the water tray, the panel or the water tray is provided with a second connecting hole matched with the connecting hole, and the stove head seat is fixedly connected with the panel or the water tray through a fastener arranged in the first connecting hole and the second connecting hole. The fasteners may be screws or the like. The utility model discloses a when the combustor was installed in the panel of gas cooking utensils or integrated kitchen product, lower part, outer ring fire ejector and the central fire ejector of headstock all were located the panel below.

The biggest external diameter of central fire lid equals or is less than the biggest external diameter of the central fire connector of furnace base to do benefit to when the maintenance product, if the central fire lid has when not taking off, the panel of gas cooking utensils or integrated kitchen range product can also take out under the condition of not tearing central fire lid open, can not cause the maintenance degree of difficulty.

By using the utility model, the central fire cover covers the central fire connecting port of the stove head seat, the outer fire cover component is sleeved on the outer fire connecting port of the stove head seat, and the outer fire cover component and the central fire cover can be conveniently taken and placed on the stove head seat, so as to be beneficial to cleaning the stove surface; the outer ring fire cover covers the outer ring fire cover base, the outer ring fire cover of the outer ring fire cover assembly can be conveniently detached from the outer ring fire cover base, and the outer ring fire cover assembly can be cleaned conveniently while cleaning the cooking surface. The utility model discloses a radial seal has solved the poor problem of structural stability that furnace flange face seal structure brought, and sealed department need not the rubber coating, non-deformable, and combustion stability is good, and the durability is good, and processing is simple. Use the utility model discloses, the furnace base realizes respectively through corresponding connector with outer fire ejector, central fire lid, outer fire lid subassembly being connected, the furnace base does not have the heating of large tracts of land and easily deposits hot water region, and the hot water is difficult for directly dropping on the furnace base during the use, is favorable to prolonging the life of furnace base. The utility model discloses in, supreme one side crescent up along the hang plate is down followed to the internal diameter of the inner chamber of the central fire connector of furnace base to do benefit to the air current and upwards smoothly equally divide the inner chamber upper portion to the central fire connector.

The utility model has compact structure, large combustion heat load and high space utilization rate, is suitable for gas cooker products such as gas cookers and integrated cookers, and is particularly suitable for Chinese food cooking; the structure stability is good, the manufacturing process is simple, the consistency is good, the energy utilization and the material consumption are effectively reduced, the energy conservation and the environmental protection of the manufacturing process are realized, and the method is suitable for mass production.

Drawings

FIG. 1 is an overall exploded view of a clean keeping type burner according to example 1;

FIG. 2 is a perspective view of an outer ring cap assembly of the clean keeping burner according to example 1;

FIG. 3 is a perspective view of a center fire cover of the clean keeping type burner according to embodiment 1;

FIG. 4 is a perspective view of an outer ring fire cover of the clean keeping type burner according to embodiment 1;

FIG. 5 is a perspective view of an outer ring base of the clean keeping type burner according to embodiment 1;

FIG. 6 is a perspective view of a burner base of the clean keeping type burner according to embodiment 1;

FIG. 7 is another perspective view of a burner base of the clean keeping type burner according to embodiment 1;

FIG. 8 is a perspective view of an integral ejector tube of the clean keeping burner of example 1;

FIG. 9 is a perspective view of a cover plate of an injection tube of the clean type burner of example 1;

FIG. 10 is a perspective view of the clean keeping burner of example 1 with the outer ring cap assembly removed;

FIG. 11 is a perspective view of the clean keeping burner of example 2 with the outer ring cap assembly removed.

In the figure, 1, an outer ring fire ejector, 2, a center fire ejector, 3, a furnace head seat, 4, a center fire cover, 5, a center fire connecting port, 6, an outer ring fire connecting port, 7, a center fire ejector connecting port, 8, an outer ring fire ejector connecting port, 9, an outer ring fire cover, 10, an outer ring fire cover base, 11, a base inner ring of the outer ring fire cover base, 12, a base outer ring of the outer ring fire cover base, 13, a base annular bottom plate of the outer ring fire cover base, 14, a supporting ring of the outer ring fire cover base, 15, a connecting foot of the outer ring fire cover base, 16, a U-like connecting bottom plate of the base annular bottom plate, 17, a fan-shaped connecting bottom plate of the base annular bottom plate, 18, an outer ring fire outlet hole, 19, the furnace head connecting port, 21, a step surface of a first annular step of the outer wall of the furnace head seat fire connecting port, 22, a vertical surface of the first annular step, 23. inner surface of outer wall of furnace end connecting port, 24, secondary air channel, 25, central fire cover inner ring of central fire cover, 26, central fire cover outer ring of central fire cover, 27, central fire outlet hole, 28, step surface of second annular step of outer surface of central fire cover outer ring, step surface of third annular step of inner surface of central fire cover inner ring, 30, outer wall of central fire connecting port of furnace head seat, step surface of fourth annular step of inner surface of outer wall of central fire connecting port of furnace head seat, 32, vertical surface of second annular step, 33, vertical surface of fourth annular step, 34, inner wall of central fire connecting port of furnace head seat, 35, step surface of fifth annular step of outer surface of inner wall of central fire connecting port of furnace head seat, 36, vertical surface of third annular step, 37, vertical surface of fifth annular step, 38, step surface of sixth annular step of outer surface of central fire connecting port of furnace head seat, 39. a support ring ignition needle through-insertion hole, 40, a support ring thermocouple through-insertion hole, 41, a furnace base ignition needle through-insertion hole, 42, a furnace base thermocouple through-insertion hole, 43, an ignition needle, 44, a thermocouple, 45, a step surface of a seventh annular step of an outer surface of a base outer ring of an outer ring fire cover base, 46, a step surface of an eighth annular step of an inner surface of a base inner ring of an outer ring fire cover base, 47, an air inlet flow passage of a center of an inner wall of a center fire connection port of the furnace base, 48, an outer ring fire cover inner ring of an outer ring fire cover, 49, an outer ring fire cover outer ring of the outer ring fire cover, 50, a step surface of a ninth annular step of an outer surface of an outer ring fire cover inner ring, 51, a vertical surface of an eighth annular step, 52, a vertical surface of a ninth annular step, 53, a step surface of a tenth annular step of an inner surface of an outer ring fire cover, 54, a vertical surface, 55. the burner comprises a fixed connection block, 56, an injection pipe cover plate, 57, an outer fire connection annular boss, 58, a central fire connection annular boss, 60, a flame connection hole, 61, an outer fire fan-shaped air inlet hole, 62, a central fire fan-shaped air inlet hole, 63, an anti-dry burning probe mounting frame, 64, a fire outlet hole in the inner ring of the central fire cover, 65, a first connection hole in the burner base, 66, the vertical surface of a tenth annular step, 67, an inclined upward inclined plate, 68, a central fire cover inner ring secondary air inlet hole in the outer wall of a central fire connection port of the burner base, 69, an outer ring fire cover body of the outer ring fire cover, 70 and an outer ring fire nozzle entering circular hole, 71 and a central fire nozzle entering circular hole, 72 and a central hole of the inclined upward inclined plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1:

referring to fig. 1 to 10, a clean-keeping burner comprises an outer ring fire ejector 1, a central fire ejector 2 and a burner base 3, the central fire cover 4 and the outer ring fire cover component are arranged, the upper portion of the furnace head seat 3 is provided with a central fire connector 5 and an outer ring fire connector 6, the lower portion of the furnace head seat 3 is provided with a central fire ejector connector 7 and an outer ring fire ejector connector 8, the central fire connector 5 is communicated with the central fire ejector connector 7, the outer ring fire connector 6 is communicated with the outer ring fire ejector connector 8, the central fire cover 4 covers the central fire connector 5 of the furnace head seat 3, the outer ring fire cover component is sleeved on the outer ring fire connector 6 of the furnace head seat 3, the air outlet end of the central fire ejector 2 is connected with the central fire ejector connector 7 of the furnace head seat 3, and the air outlet end of the outer ring fire ejector 1 is connected with the outer ring fire ejector connector 8 of the furnace head seat 3.

The outer ring fire cover assembly comprises an outer ring fire cover 9 and an outer ring fire cover base 10, a through hole is formed in the center of the outer ring fire cover 9, and the upper surface of the outer ring fire cover 9 is an inverted conical surface, so that the heat of the central fire can be gathered, and the heat efficiency is improved; a through hole is also formed in the center of the central fire cover 4, the central fire cover 4 is positioned in the central through hole of the outer ring fire cover 9, an annular gap exists between the outer ring fire cover 9 and the central fire cover 4, the width of the annular gap can be 5-15mm, and 10cm is selected in the embodiment; the outer ring fire cover 9 is covered on the outer ring fire cover base 10, the outer ring fire cover base 10 is an integrated structure, the outer ring fire cover base 10 comprises a base inner ring 11 and a base outer ring 12, the base comprises a base annular bottom plate 13 and a support ring 14, wherein a base inner ring 11 is fixedly connected with the inner edge of the base annular bottom plate 13, a base outer ring 12 is fixedly connected with the outer edge of the base annular bottom plate 12, the support ring 14 is positioned below the base annular bottom plate 13, the outer edge of the support ring 14 is fixedly connected with the inner edge of the base annular bottom plate 12 through at least two connecting pins 15, a gap is arranged between every two adjacent connecting pins 15, the gap between every two adjacent connecting pins 15 is a secondary air channel 24, the gap between every two adjacent connecting pins 15 is communicated with an annular gap between an outer ring fire cover 9 and a central fire cover 4, a through hole is formed in the center of the support ring 14, a through hole is formed in the center of the base inner ring 11, and the; the base annular bottom plate 13 comprises a U-shaped connecting bottom plate 16 and a fan-shaped connecting bottom plate 17, two ends of the U-shaped connecting bottom plate 16 are fixedly connected with two ends of the fan-shaped connecting bottom plate 17 respectively, the U-shaped connecting bottom plate 16 and the fan-shaped connecting bottom plate 17 are transited through an inclined plane, the upper surface of the U-shaped connecting bottom plate 16 is higher than the upper surface of the fan-shaped connecting bottom plate 17, a cavity defined by the fan-shaped connecting bottom plate 17, the base inner ring 11, the base outer ring 12 and the outer ring fire cover 9 is an outer ring fire mixing cavity, a cavity defined by the U-shaped connecting bottom plate 16, the base inner ring 11, the base outer ring 12 and the outer ring fire cover 9 is an outer ring fire distributing cavity, the outer ring fire distributing cavity is used for distributing air flow flowing out from the outer ring fire mixing cavity to an outer ring fire outlet 18, a connecting port furnace end 19 penetrating through the fan-shaped connecting bottom plate 17, so as to be beneficial to realizing the connection between the furnace end connecting opening 19 and the outer ring fire connecting opening 6 of the furnace head seat 3.

The outer surface of the outer ring fire connecting port 6 of the stove head base 3 is provided with a first annular step with an upward step surface 21, the stove head connecting port 19 of the fan-shaped connecting bottom plate 17 is sleeved on the first annular step, the bottom surface of the stove head connecting port 19 of the fan-shaped connecting bottom plate is tightly attached to the step surface 21 of the first annular step, the step surface 21 of the first annular step is a horizontal plane and used for ensuring the positioning of the outer ring fire cover base 10 in the vertical direction, and the vertical surface 22 of the first annular step is tightly attached to the inner surface 23 of the outer wall of the stove head connecting port 19 of the fan-shaped connecting bottom plate, so that the radial sealing of the outer ring fire connecting port 6 of the stove head base 3 and the stove head.

The central fire cover 4 can be of an integrated structure, the central fire cover 4 comprises a central fire cover inner ring 25 and a central fire cover outer ring 26, the outer edge of the central fire cover inner ring 25 is fixedly connected with the upper edge of the central fire cover outer ring 26, a central fire outlet hole 27 is uniformly distributed on the outer side wall of the central fire cover outer ring 26, a second annular step with a downward step surface 28 is arranged on the outer surface of the central fire cover outer ring 26, and a third annular step with a downward step surface 29 is arranged on the inner surface of the central fire cover inner ring 26. The inner surface of the outer wall 30 of the central fire connecting port 5 of the furnace head base 3 is provided with a fourth annular step with an upward step surface 31, the top surface of the outer wall 30 of the central fire connecting port 5 of the furnace head base 3 is tightly attached to the step surface 28 of the second annular step, and the vertical surface 32 of the second annular step is tightly attached to the vertical surface 33 of the fourth annular step, so that the radial sealing of the central fire cover outer ring 26 and the outer wall 30 of the central fire connecting port 5 of the furnace head base is favorably realized. The outer surface of the inner wall 34 of the central fire connecting port 5 of the burner base is provided with a fifth annular step with an upward step surface 35, the top surface of the inner wall 34 of the central fire connecting port 5 of the burner base is tightly attached to the step surface 29 of the third annular step, and the vertical surface 36 of the third annular step is tightly attached to the vertical surface 37 of the fifth annular step, so that the radial sealing of the central fire cover inner ring 25 and the inner wall 34 of the central fire connecting port 5 of the burner base is favorably realized.

The center of the inner ring of the central fire cover 4 is provided with a through hole, and the center through hole of the inner ring 25 of the central fire cover is the center through hole of the central fire cover 4.

The annular gap between outer ring fire lid 9 and central fire lid 4 is connected to the space between adjacent connecting foot 15, secondary air passageway intercommunication, and the annular gap between adjacent connecting foot 15 can introduce the air into the annular gap between outer ring fire lid 9 and central fire lid 4, and when the gas and the gas mixture of air that central fire goes out fire hole 27 blowout on the lateral wall of central fire lid outer loop 26 burnt and produced flame, can promote the fire to the flame that this burning produced. Meanwhile, the gap between the adjacent connection legs 15, i.e., the secondary air passage, may also provide partial combustion promoting air for the outer ring fire (i.e., flame generated when the mixture of gas and air injected from the outer ring fire outlet hole is combusted).

The outer surface of the outer wall 30 of the central fire connecting port 5 of the burner base is provided with a sixth annular step with an upward step surface 38, the support ring 14 of the outer ring fire cover base is placed on the step surface 38 of the sixth annular step, the step surface 38 of the sixth annular step is a horizontal plane and is used for further ensuring the positioning of the outer ring fire cover base 10 in the vertical direction, and the outer wall 30 of the central fire connecting port 5 of the burner base penetrates through a central through hole of the support ring 14.

The furnace head base 3 is provided with an inclined upward inclined plate 67 with a central hole 72 in the center, the inner edge of the inclined upward inclined plate 67 is fixedly connected with the inner wall 34 of the central fire connecting port 5 of the furnace head base 3, the outer edge of the inclined upward inclined plate 67 is fixedly connected with the outer wall 30 of the central fire connecting port 5 of the furnace head base, and a cavity defined by the upward surface of the inclined upward inclined plate 67, the outer surface of the inner wall 34 of the central fire connecting port 5 of the furnace head base and the inner surface of the outer wall 30 of the central fire connecting port 5 of the furnace head base is an inner cavity of the central fire connecting port 5 of the furnace. The inner diameter of the inner cavity of the central fire connecting port 5 of the furnace head seat gradually increases from bottom to top along the upward surface of the inclined plate 67, so that the upward smooth uniform distribution of airflow to the upper part of the inner cavity of the central fire connecting port 5 is facilitated.

The central fire outlet holes 27 on the outer ring 26 of the central fire cover are divided into three layers, the central fire outlet holes 27 on the first layer and the central fire outlet holes 27 on the second layer are main central fire outlet holes, and the central fire outlet holes 27 on the third layer are flame stabilizing holes. The diameter of the central fire hole of the third layer is smaller than that of the central fire hole of the first layer and that of the central fire hole of the second layer. The arrangement of the three-layer central fire outlet holes 27 has the advantages that the temperature of the central fire cover 4 is low, the durability is good, the red fire phenomenon can not occur due to long combustion time, the flame stabilizing effect is good, and the three-layer central fire outlet holes can better adapt to different gas requirements. For the first layer central fire outlet holes 27, the center distance between the adjacent central fire outlet holes is 1.5-4 times of the diameter of the fire hole of the first layer central

fire outlet hole

27, and 2 times is selected in the embodiment; the second layer central fire outlet holes and the first layer central fire outlet holes are arranged in a staggered mode, the vertical center distance between the first layer central fire outlet holes and the second layer central fire outlet holes is 0.6-2.5 times of the diameter of the fire holes of the second layer central fire outlet holes, in the embodiment, 2 times of the diameter of the first layer central fire outlet holes are selected, the third layer central fire outlet holes and the second layer central fire outlet holes are arranged in an aligned mode, the vertical center distance between the second layer central fire outlet holes and the third layer central fire outlet holes is 0.5-2.5 times of the diameter of the third layer central fire outlet holes, in the embodiment, 2 times of the diameter of the third layer central fire outlet holes are selected, the main central fire outlet holes 27 arranged in the mode are arranged in a delta shape, and two flame stabilizing fire holes are further arranged on the lower portion of the delta shape. Partial air current in the central fire connector 5 of headstock can shunt to in the flame stabilizing fire hole, the mist burning of spun gas and air forms little flame in the flame stabilizing fire hole, little flame is favorable to pulling the flame that the second floor center fire goes out fire hole 27 from the flame root that the second floor center fire goes out fire hole 27, realize the stability that the second floor center fire goes out fire hole 27 department flame, thereby reduce the second floor center fire and go out the emergence of fire hole 27 department jumping fire or take off fire phenomenon, ensure the combustion stability of combustor, that is to say, the flame stabilizing fire hole can play the fire hole to the second floor center fire and play the flame stabilizing effect, and simultaneously, the flame stabilizing fire hole still can upwards transmit flame. Air between the adjacent flame stabilizing holes can be supplemented to the central fire outlet holes of the second layer and the central fire outlet holes of the first layer, and sufficient combustion is realized.

The central fire cover inner ring 25 is also uniformly provided with fire outlets 64, the outer wall 30 of the central fire connecting port 5 of the furnace head seat 3 is provided with a central fire cover inner ring secondary air inlet 68, the center of the inner wall 34 of the central fire connecting port 5 of the furnace head seat 3 is provided with an air inlet flow channel 47, and the central fire cover inner ring secondary air inlet 68 of the outer wall 30 of the central fire connecting port 5 of the furnace head seat 3 is communicated with the air inlet flow channel 47 of the center of the inner wall 34 of the central fire connecting port 5 of the furnace head seat. When the mixed gas of the air and the fuel gas sprayed from the fire outlet holes 64 on the inner ring 25 of the central fire cover is combusted to generate flame, the secondary air inlet holes 68 of the inner ring of the central fire cover on the outer wall 30 of the central fire connecting port 5 of the burner base can introduce the air into the air inlet flow passage 47 at the center of the inner wall 34 of the central fire connecting port 5 of the burner base, so that the flame generated by the mixed gas of the air and the fuel gas sprayed from the fire outlet holes 64 on the inner ring 25 of the central fire cover is promoted. Flame generated when the airflow sprayed out of the fire outlet holes 64 of the inner ring 25 of the central fire cover is combusted at the center of the pot bottom, and the heat efficiency is improved.

The bottom surface of the air inlet flow channel 47 in the center of the inner wall 34 of the central fire connecting port 5 of the burner base is closed, one side of the air inlet flow channel 47 in the center of the inner wall 34 of the central fire connecting port 5 of the burner base is communicated with the central fire cover inner ring secondary air inlet hole 68 in the outer wall 30 of the central fire connecting port 5 of the burner base, and the air inlet flow channel 47 in the center of the inner wall 34 of the central fire connecting port 5 of the burner base supplements air through the central fire cover inner ring secondary air inlet hole 68 in the outer wall 30 of the central fire connecting port 5 of the burner base.

A support ring ignition needle through hole 39 and a support ring thermocouple through hole 40 are formed in the support ring 14 of the outer ring fire cover base, a furnace head base ignition needle through hole 41 matched with the support ring ignition needle through hole 39 is formed in the furnace head base 3, and a furnace head base thermocouple through hole 42 matched with the support ring thermocouple through hole 40 is further formed in the furnace head base 3. The ignition needle 43 sequentially penetrates through the furnace headstock ignition needle through-hole 41 and the support ring ignition needle through-hole 39 from bottom to top and then extends into the annular gap between the central fire cover 4 and the outer ring fire cover 9, and the thermocouple 44 sequentially penetrates through the furnace headstock thermocouple through-hole 42 and the support ring thermocouple through-hole 40 from bottom to top and then extends into the annular gap between the central fire cover 4 and the outer ring fire cover 9. The ignition needle 43 and the thermocouple 44 are well-established components of existing burners, and thus the ignition needle 43 and the thermocouple 44 will not be described in detail herein. Under the action of the support ring ignition needle through jack 39 and the furnace base ignition needle through jack 41, the ignition needle 43 can conduct horizontal direction guiding positioning on the outer ring fire cover base; the thermocouple 44 can be oriented horizontally with respect to the outer ring cap base by the support ring thermocouple insertion hole 40 and the headstock thermocouple insertion hole 42. In order to prevent wrong installation, this is for preventing slow-witted design, and other directions do not have the jack and can't install.

The outer surface of the base outer ring 12 of the outer ring fire cover base is provided with a seventh annular step with an upward step surface 45, and the inner surface of the base inner ring 11 of the outer ring fire cover base is provided with an eighth annular step with an upward step surface 46. The outer ring fire cover 9 comprises an outer ring fire cover inner ring 48, an outer ring fire cover body 69 and an outer ring fire cover outer ring 49, wherein the upper edge of the outer ring fire cover inner ring 48 is fixedly connected with the inner edge of the outer ring fire cover body 69, the outer edge of the outer ring fire cover body 69 is fixedly connected with the upper edge of the outer ring fire cover outer ring 49, the upper surface of the outer ring fire cover body 69 is an inverted conical surface, an outer ring fire outlet hole 18 is formed in the outer ring fire cover outer ring 49, a ninth annular step with a downward step surface 50 is arranged on the outer surface of the outer ring fire cover inner ring 48, the top surface of the base inner ring 11 of the outer ring fire cover base is tightly attached to the step surface 50 of the ninth annular step, and the vertical surface 51 of the eighth annular step is tightly attached to the vertical surface 52 of the ninth annular step, so that the radial sealing between the base inner ring 11 of the outer ring; the inner surface of the outer ring fire cover outer ring 49 is provided with a tenth annular step with a downward step surface 53, the top surface of the base outer ring 12 of the outer ring fire cover base is tightly attached to the step surface 53 of the tenth annular step, and the vertical surface 54 of the seventh annular step is tightly attached to the vertical surface 66 of the tenth annular step, so that the radial sealing between the base outer ring 12 of the outer ring fire cover base and the outer ring fire cover outer ring 49 is favorably realized.

The outer ring fire cover body 69 is provided with a flame connecting hole 60, one end of the flame connecting hole 60 is communicated with the outer ring fire outlet hole 18, and the other end of the flame connecting hole 60 extends to the outer ring fire cover inner ring 48.

The air outlet end of the outer ring fire ejector 1 extends into the outer ring fire ejector connector 8 of the furnace head seat 3, the air outlet end of the outer ring fire ejector 1 and the outer ring fire ejector connector 8 of the furnace head seat form taper fit, the taper of the outer surface of the air outlet end of the outer ring fire ejector 1 is larger than that of the inner surface of the outer ring fire ejector connector 8 of the furnace head seat, the taper of the outer surface of the air outlet end of the outer ring fire ejector 1 is larger than 0 degree and smaller than or equal to 10 degrees, the taper of the inner surface of the outer ring fire ejector connector 8 of the furnace head seat is larger than or equal to 0 degree and smaller than or equal to 10 degrees, and sealing between the air outlet end of the outer ring fire ejector 1 and the outer ring fire ejector connector.

The air outlet end of the central fire ejector 2 extends into the central fire ejector connecting port 7 of the furnace head seat 3, the air outlet end of the central fire ejector 2 and the central fire ejector connecting port 7 of the furnace head seat form taper fit, the taper of the outer surface of the air outlet end of the central fire ejector 2 is larger than that of the inner surface of the central fire ejector connecting port 7 of the furnace head seat, the taper of the outer surface of the air outlet end of the central fire ejector 2 is larger than 0 degree and smaller than or equal to 10 degrees, the taper of the inner surface of the central fire ejector connecting port 7 of the furnace head seat is larger than or equal to 0 degree and smaller than or equal to 10 degrees, and sealing between the air outlet end of the central fire ejector 2 and the central fire ejector connecting port 7 of the furnace head seat.

Be equipped with between the surface of outer ring fire ejector 1 and the surface of center fire ejector 2 and link firmly piece 55, the one end that links firmly piece 55 links firmly with the surface of outer ring fire ejector 1, and the other end that links firmly piece 55 links firmly with the surface of center fire ejector 2 to do benefit to the overall structure's of outer ring fire ejector 1 and center fire ejector 2 fastness, form the integral type and draw the penetrating pipe.

The inner diameter of the air outlet end of the outer ring fire ejector 1 is 1.2-2.5 times of the diameter of the throat part of the outer ring fire ejector 2. The annular distance between the inner wall 34 of the central fire connecting port 5 of the furnace head seat and the outer wall 30 of the central fire connecting port 5 of the furnace head seat is 0.5-1.5 times of the throat diameter of the central fire ejector 2. The throat diameter is the minimum value of the inner diameter of the corresponding ejector pipe.

An ejector tube cover plate 56 is arranged on the outer end face of the air inlet end of the outer ring fire ejector 1 and the outer end face of the air inlet end of the center fire ejector 2, an outer ring fire fan-shaped air inlet 61 communicated with the air inlet end of the outer ring fire ejector 1 and an outer ring fire nozzle inlet circular hole 70 are formed in the ejector tube cover plate 56, a center fire fan-shaped air inlet 62 communicated with the air inlet end of the center fire ejector 2 and a center fire nozzle inlet circular hole 71 are formed in the ejector tube cover plate 56, two annular connecting bosses are arranged on one sides of the ejector tube cover plate 56 close to the outer end face of the air inlet end of the outer ring fire ejector 1 and the outer end face of the air inlet end of the center fire ejector 2, the two annular connecting bosses are outer ring fire connecting annular bosses 57 and a center fire connecting annular boss 58, the outer ring fire connecting boss 57 extends into the air inlet end of the outer ring fire ejector 1, the center fire connecting annular boss 58 extends into the air inlet end of the center fire ejector, the outer end face of the ejector tube cover plate 56 is flat, so that the ejector tube cover plate can be better attached to a mature air flap of a combustor, and the flatness is improved. The air inlet end of the outer ring fire ejector 1 is connected with the ejector pipe cover plate 56 through a fastener, the air inlet end of the central fire ejector 2 is connected with the ejector pipe cover plate 56 through a fastener, and the fastener can be a screw and the like.

The vertical distance between the upper end surface of the outer ring fire connecting opening 6 of the furnace head seat 3 and the inner top surface of the outer ring fire cover 9 is 0.5-2 times of the inner diameter of the outer ring fire connecting opening 6 of the furnace head seat 3.

For a component, the inner surface of the component refers to the surface closer to the central axis of the component and the outer surface of the component refers to the surface farther from the central axis of the component. For the central fire lid inner ring 25, for example, the inner surface of the central fire lid inner ring 25 is closer to the central axis of the central fire lid, and the outer surface of the central fire lid inner ring 25 is farther from the central axis of the central fire lid.

The stove head base 3 is provided with a first connecting hole 65 connected with a panel or a water tray (not shown in the figure), the panel or the water tray is provided with a second connecting hole (not shown in the figure) matched with the connecting hole, and the stove head base 3 is fixedly connected with the panel or the water tray through a fastener (not shown in the figure) arranged in the first connecting hole 65 and the second connecting hole. The fasteners may be screws or the like. The utility model discloses a when the combustor was installed in the panel of gas cooking utensils or integrated kitchen product, lower part, outer fire ejector 1 and the central fire ejector 2 of headstock 3 all were located the panel below.

The biggest external diameter of central fire lid 4 equals or is less than the biggest external diameter of the central fire connector 5 of headstock 1 to do benefit to when the maintenance product, if central fire lid 4 has when not taking off, the panel of gas cooking utensils or integrated kitchen products can also be taken out under the condition of not tearing central fire lid 4 open, can not cause the maintenance degree of difficulty.

During operation, the central fire nozzle of the ejector tube cover plate 56 enters the round hole 71 to be aligned with the existing mature central fire nozzle, and the outer ring fire nozzle of the ejector tube cover plate 56 enters the round hole 70 to be aligned with the existing mature outer ring fire nozzle. The gas ejected from the central fire nozzle ejects air from the central fire fan-shaped air inlet 62 of the ejection pipe cover plate 56, the gas and the air flow into the air inlet end of the central fire ejector 2 together and enter the central fire ejector 2, then enter the central fire connector 5 of the burner base 3 through the central fire ejector connector 7 of the burner base 3, and then are ejected from the central fire outlet 27, combustion is started under the ignition effect of the ignition needle 43, and the flame of the combustion is transferred to the outer ring fire outlet 18 under the effect of the flame connecting hole 60. Synchronously, the gas sprayed from the outer ring fire nozzle is injected from the outer ring fire fan-shaped air inlet 61 of the injection pipe cover plate 56, the gas and the air flow into the air inlet end of the outer ring fire injector 1 and enter the outer ring fire injector 1, then flow into the outer ring fire connector 6 of the burner base 3 through the outer ring fire injector connector 8 of the burner base 3, enter the outer ring fire mixing cavity and the outer ring fire sub-cavity, and then are sprayed from the outer ring fire outlet 18, and finally start to burn under the flame effect transmitted from the flame connecting hole 60.

Example 2:

this example differs from example 1 in that:

referring to fig. 11, a through hole is formed in the center of the inner wall 34 of the central fire connection port 5 of the burner base, an anti-dry-burning probe is installed in the central through hole of the inner wall of the central fire connection port 5 of the burner base, the lower end of the anti-dry-burning probe is fixed on an anti-dry-burning mounting frame 63, the upper end of the anti-dry-burning probe extends out of the central through hole of the central fire cover inner ring 25, and the anti-dry-burning probe mounting frame is; the central hole 72 of the inclined plate 67 communicates with the central through hole of the inner wall of the central fire connection port 5 of the head seat. The anti-dry heating probe is a mature part of the existing burner, so the anti-dry heating probe is not described in detail herein. The central hole 72 of the inclined plate 67 is located directly below the central through hole of the inner wall 34 of the central fire connection port 5.

The central through hole of the inner wall 34 of the central fire connection port 5 is formed by opening the bottom surface of the intake air flow passage 47 closed at the bottom surface of the center of the inner wall 34 of the central fire connection port 5 in embodiment 1, and the central through hole of the inner wall 34 of the central fire connection port 5 is communicated with the central hole 72 of the inclined plate 67. In this embodiment, it is not necessary to provide the secondary air inlet 68 of the inner ring of the central fire cover on the outer wall 30 of the central fire connecting port 5 of the burner base, and the fire outlets 64 on the inner ring 25 of the central fire cover are not necessarily uniformly distributed.

The rest is the same as example 1.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. A clean-keeping burner is characterized by comprising an outer fire ejector, a central fire ejector, a burner base, a central fire cover and an outer fire cover assembly, wherein the upper part of the burner base is provided with a central fire connector and an outer fire connector, the lower part of the burner base is provided with the central fire ejector connector and the outer fire ejector connector, the central fire connector is communicated with the central fire ejector connector, the outer fire connector is communicated with the outer fire ejector connector, the central fire cover covers the central fire connector of the burner base, the outer fire cover assembly is sleeved on the outer fire connector of the burner base, the air outlet end of the central fire ejector is connected with the central fire ejector connector of the burner base, and the air outlet end of the outer fire ejector is connected with the outer fire ejector connector of the burner base.

2. The clean-keeping burner of claim 1, wherein the outer ring fire cap assembly comprises an outer ring fire cap and an outer ring fire cap base, the center of the outer ring fire cap is provided with a through hole, the upper surface of the outer ring fire cap is an inverted cone, and the taper is 80-140 degrees; a through hole is also formed in the center of the central fire cover, the central fire cover is positioned in the central through hole of the outer ring fire cover, an annular gap is formed between the outer ring fire cover and the central fire cover, and the width of the annular gap is 5-15 mm; the outer ring fire cover covers the outer ring fire cover base, the outer ring fire cover base is of an integrally formed structure and comprises a base inner ring, a base outer ring, a base annular bottom plate and a support ring, the base inner ring is fixedly connected with the inner edge of the base annular bottom plate, the base outer ring is fixedly connected with the outer edge of the base annular bottom plate, the support ring is positioned below the base annular bottom plate, the outer edge of the support ring is fixedly connected with the inner edge of the base annular bottom plate through at least two connecting pins, a gap is formed between every two adjacent connecting pins, a gap between every two adjacent connecting pins is a secondary air channel, the gap between every two adjacent connecting pins is communicated with an annular gap between the outer ring fire cover and the central fire cover, a through hole is formed in the center of the support ring, a through hole is formed in the center of the base inner; the annular bottom plate of base includes that class U-shaped connects bottom plate and fan-shaped connection bottom plate, the both ends of U-shaped connection bottom plate link firmly with the both ends of fan-shaped connection bottom plate respectively, the upper surface that the bottom plate is connected to the U-shaped is higher than the upper surface of fan-shaped connection bottom plate, the base inner ring, the base outer loop, the cavity that the outer loop fire lid encloses is outer ring fire hybrid chamber, the U-shaped connection bottom plate, the base inner ring, the base outer loop, the cavity that the outer loop fire lid encloses divides the fire chamber for outer ring fire, outer ring fire divides the fire chamber to be used for shunting to outer ring fire outlet with the air current that flows from outer ring fire hybrid chamber, the middle part of fan-shaped connection bottom plate is equipped with the furnace end.

3. The cleaning burner as claimed in claim 2, wherein the outer surface of the outer wall of the outer fire connecting port of the burner head base is provided with a first annular step with an upward step surface, the step surface of the first annular step is a horizontal surface, the burner connecting port of the fan-shaped connecting bottom plate is sleeved on the first annular step, the bottom surface of the burner connecting port of the fan-shaped connecting bottom plate is tightly attached to the step surface of the first annular step, and the vertical surface of the first annular step is tightly attached to the inner surface of the outer wall of the burner connecting port of the fan-shaped connecting bottom plate;

4. A cleaning burner according to claim 2 or 3, wherein the central fire cover is of an integrally formed structure, the central fire cover comprises a central fire cover inner ring and a central fire cover outer ring, the outer edge of the central fire cover inner ring is fixedly connected with the upper edge of the central fire cover outer ring, central fire outlet holes are uniformly distributed on the outer side wall of the central fire cover outer ring, a second annular step with a downward step surface is arranged on the outer surface of the central fire cover outer ring, and a third annular step with a downward step surface is arranged on the inner surface of the central fire cover inner ring; the inner surface of the outer wall of the central fire connecting port of the furnace head seat is provided with a fourth annular step with an upward step surface, the top surface of the outer wall of the central fire connecting port of the furnace head seat is tightly attached to the step surface of the second annular step, and the vertical surface of the second annular step is tightly attached to the vertical surface of the fourth annular step; the outer surface of the inner wall of the central fire connecting port of the furnace head seat is provided with a fifth annular step with an upward step surface, the top surface of the inner wall of the central fire connecting port of the furnace head seat is tightly attached to the step surface of the third annular step, and the vertical surface of the third annular step is tightly attached to the vertical surface of the fifth annular step; the center of the inner ring of the central fire cover is provided with a through hole, and the central through hole of the inner ring of the central fire cover is the central through hole of the central fire cover;

the outer surface of the outer wall of the central fire connecting port of the furnace head seat is provided with a sixth annular step with an upward step surface, the step surface of the sixth annular step is a horizontal plane, the support ring of the outer ring fire cover base is placed on the step surface of the sixth annular step, and the outer wall of the central fire connecting port of the furnace head seat penetrates through the central through hole of the support ring;

the furnace head seat is provided with an inclined upward inclined plate with a central hole in the center, the inner edge of the inclined upward inclined plate is fixedly connected with the inner wall of the central fire connector of the furnace head seat, the outer edge of the inclined upward inclined plate is fixedly connected with the outer wall of the central fire connector of the furnace head seat, and a cavity defined by the upward surface of the inclined upward inclined plate, the outer surface of the inner wall of the central fire connector of the furnace head seat and the inner surface of the outer wall of the central fire connector of the furnace head seat is an inner cavity of the central fire connector of the furnace head seat.

5. The cleaning type burner of claim 4, wherein the central fire outlet holes on the outer ring of the central fire cover are divided into three layers, the central fire outlet hole of the first layer and the central fire outlet hole of the second layer are main central fire outlet holes, and the central fire outlet holes of the third layer are flame stabilizing fire holes; the diameter of the central fire hole of the third layer is smaller than the diameter of the central fire hole of the first layer and the diameter of the central fire hole of the second layer; for the first layer of central fire outlet holes, the center distance between the adjacent central fire outlet holes is 1.5-4 times of the diameter of the fire hole of the first layer of central fire outlet hole; the second layer central fire outlet holes and the first layer central fire outlet holes are arranged in a staggered mode, and the vertical center distance between the first layer central fire outlet holes and the second layer central fire outlet holes is 0.6-2.5 times of the diameter of the fire holes of the second layer central fire outlet holes; the third layer central fire outlet hole and the second layer central fire outlet hole are arranged in alignment, and the vertical center distance between the second layer central fire outlet hole and the third layer central fire outlet hole is 0.5-2.5 times of the diameter of the third layer central fire outlet hole;

the inner ring of the central fire cover is also uniformly provided with fire outlets, the outer wall of the central fire connector of the furnace head seat is provided with a secondary air inlet hole of the inner ring of the central fire cover, the center of the inner wall of the central fire connector of the furnace head seat is provided with an air inlet channel, and the secondary air inlet hole of the inner ring of the central fire cover of the outer wall of the central fire connector of the furnace head seat is communicated with the air inlet channel of the center of the inner wall of the central fire connector of the furnace head seat.

6. The clean-keeping burner of claim 2 or 3, wherein the support ring of the outer ring fire cover base is provided with a support ring ignition needle through hole and a support ring thermocouple through hole, the burner base is provided with a burner base ignition needle through hole adapted to the support ring ignition needle through hole, and the burner base is further provided with a burner base thermocouple through hole adapted to the support ring thermocouple through hole.

7. The clean-keeping burner of claim 2 or 3, wherein the outer surface of the outer ring of the base of the outer ring fire cover base is provided with a seventh annular step with an upward-facing step, and the inner surface of the inner ring of the base of the outer ring fire cover base is provided with an eighth annular step with an upward-facing step; the outer ring fire cover comprises an outer ring fire cover inner ring, an outer ring fire cover body and an outer ring fire cover outer ring, wherein the upper edge of the outer ring fire cover inner ring is fixedly connected with the inner edge of the outer ring fire cover body, the outer edge of the outer ring fire cover body is fixedly connected with the upper edge of the outer ring fire cover outer ring, the upper surface of the outer ring fire cover body is an inverted conical surface, the taper is 80-140 degrees, an outer ring fire outlet hole is formed in the outer ring fire cover outer ring, a ninth annular step with a downward step surface is arranged on the outer surface of the outer ring fire cover inner ring, the top surface of the base inner ring of the outer ring fire cover base is tightly attached to the step surface of the ninth annular step, and the vertical surface of the eighth annular step is tightly attached; the inner surface of the outer ring fire cover is provided with a tenth annular step with a downward step surface, the top surface of the outer ring of the base of the outer ring fire cover base is tightly attached to the step surface of the tenth annular step, and the vertical surface of the seventh annular step is tightly attached to the vertical surface of the tenth annular step;

the outer ring fire cover body is provided with a flame connecting hole, one end of the flame connecting hole is communicated with the outer ring fire outlet hole, and the other end of the flame connecting hole extends to the inner ring of the outer ring fire cover.

8. The clean-keeping burner of claim 4, wherein the air outlet end of the outer fire ejector extends into the outer fire ejector connecting port of the burner base, and the air outlet end of the outer fire ejector forms a taper fit with the outer fire ejector connecting port of the burner base; the taper of the outer surface of the air outlet end of the outer ring fire ejector is larger than that of the inner surface of the outer ring fire ejector connecting port of the furnace head seat, the taper of the outer surface of the air outlet end of the outer ring fire ejector is larger than 0 ℃ and smaller than 10 ℃, and the taper of the inner surface of the outer ring fire ejector connecting port of the furnace head seat is larger than or equal to 0 ℃ and smaller than 10 ℃;

the gas outlet end of the central fire ejector extends into the central fire ejector connecting port of the furnace head seat, the gas outlet end of the central fire ejector and the central fire ejector connecting port of the furnace head seat form taper fit, the taper of the outer surface of the gas outlet end of the central fire ejector is larger than that of the inner surface of the central fire ejector connecting port of the furnace head seat, the taper of the outer surface of the gas outlet end of the central fire ejector is larger than 0 degree and smaller than or equal to 10 degrees, and the taper of the inner surface of the central fire ejector connecting port of the furnace head seat is larger than or equal to 0 degree and smaller than or equal to 10 degrees;

the inner diameter of the air outlet end of the outer ring fire ejector is 1.2-2.5 times of the diameter of the throat part of the outer ring fire ejector, and the annular space between the inner wall of the central fire connecting port of the furnace head seat and the outer wall of the central fire connecting port of the furnace head seat is 0.5-1.5 times of the diameter of the throat part of the central fire ejector.

9. The clean-keeping burner according to claim 2 or 3, wherein the outer end face of the air inlet end of the outer fire injector and the outer end face of the air inlet end of the central fire injector are provided with an injector tube cover plate, the injector tube cover plate is provided with an outer fire fan-shaped air inlet hole and an outer fire nozzle inlet circular hole which are communicated with the air inlet end of the outer fire injector, the injector tube cover plate is provided with a central fire fan-shaped air inlet hole and a central fire nozzle inlet circular hole which are communicated with the air inlet end of the central fire injector, one side of the injector tube cover plate close to the outer end face of the air inlet end of the outer fire injector and the outer end face of the air inlet end of the central fire injector is provided with two annular connecting bosses, the two annular connecting bosses are annular connecting bosses for the outer fire and the central fire, the outer fire connecting annular boss extends into the air inlet end of the outer fire injector, and the central fire connecting annular boss extends into the air inlet end of the central fire injector, the outer end surface of the cover plate of the injection pipe is smooth.

10. The cleaning type burner of claim 4, wherein a through hole is formed in the center of the inner wall of the central fire connection port of the burner head base, a dry burning prevention probe is installed in the central through hole of the inner wall of the central fire connection port of the burner head base, the lower end of the dry burning prevention probe is fixed to the dry burning prevention mounting bracket, the upper end of the dry burning prevention probe extends out of the central through hole of the inner ring of the central fire cover, and the dry burning prevention probe mounting bracket is fixed to the burner head base; the central hole of the inclined plate is communicated with the central through hole of the inner wall of the central fire connecting port of the furnace head seat.