CN110657432A - Complete upper air inlet burner arranged in mixing cavity - Google Patents

Abstract

Put into complete enterprising air inlet burner of hybrid chamber, including central fire lid, outer loop fire lid, combustor head, combustor bottom, combustor support, central fire ejector, first main fire ejector, the main fire ejector of second, be equipped with outer loop fire branch fire chamber and central fire hybrid chamber in the combustor head, still be equipped with in the combustor head and divide the gas channel, divide gas channel upper end and outer loop fire branch fire chamber intercommunication, be equipped with in the combustor bottom and put the hybrid chamber in the main fire, divide the gas channel lower extreme and put the hybrid chamber intercommunication in the main fire. The invention has the advantages of compact structure, good injection capability, high stability, large combustion power and high working reliability.

Description

Complete upper air inlet burner arranged in mixing cavity

Technical Field

The invention relates to a complete upper air inlet burner with a middle-arranged mixing cavity.

Background

In the existing gas cooker and integrated cooker industries, most of burners adopt a lower air inlet combustion technology, although some burners adopt upper air inlet, the burner head is lifted on the basis of the lower air inlet burner to realize the supply of secondary air from the upper part of a panel, and the supplement of primary air does not realize the upper air inlet, so the burner cannot be called as a complete upper air inlet technology. When the burner is applied to a common gas stove, the cabinet door of the cabinet needs to be provided with a vent hole; when the burner is applied to an integrated stove, a wire operating mechanism for adjusting an air door needs to be arranged; the burner is harsh in installation condition, and the size of the vent hole and the stability of the wire operating mechanism directly influence the working reliability of the burner.

The existing burner with part of upward air inlet has a small ejector and cannot meet the ejection requirement of large load, so that the heat load is small, only about 3.5-4.0kW is generated, the combustion flame is small, and the requirement of quick-frying Chinese food cannot be met. Meanwhile, the ejector is small, so that the adaptability to gas is poor, and the combustion stability is poor, so that the ejector is not well popularized.

The existing partial completely upper air inlet burner has the problems that the primary air and the secondary air have air flow interference during working, the air robbing phenomenon is frequent, and the combustion stability is poor.

Disclosure of Invention

The invention aims to solve the technical problem of overcoming the defects in the prior art and provide the complete upper air inlet burner with the middle-arranged mixing cavity, which has the advantages of compact structure and strong injection capability and can prevent air flow interference and air robbing during combustion.

The completely upper air inlet burner with the middle-arranged mixing cavity comprises a central fire cover, an outer ring fire cover, a burner head, a burner bottom, a burner support, a central fire ejector, a first main fire ejector and a second main fire ejector, wherein an outer ring fire sub-cavity and a central fire mixing cavity are arranged in the burner head, a central fire outlet hole is formed in the central fire cover, the central fire cover covers the central fire mixing cavity, an outer ring fire outlet hole is formed in the outer ring fire cover, the outer ring fire cover covers the outer ring fire sub-cavity, an air distribution channel is further arranged in the burner head, the upper end of the air distribution channel is communicated with the outer ring fire sub-cavity, the main fire middle-arranged mixing cavity is arranged in the burner bottom, the lower end of the air distribution channel is communicated with the main fire middle-arranged mixing cavity, and the inlet end of the central fire ejector, the inlet end of the first main fire ejector and the inlet end of the second main fire ejector are all fixed on the lower surface of the burner bottom, the outlet end of the central fire ejector penetrates through the main fire middle-arranged mixing cavity and then is communicated with the central fire mixing cavity, the outlet end of the first main fire ejector and the outlet end of the second main fire ejector are directly communicated with the main fire middle-arranged mixing cavity, the upper surface of the combustor support is fixedly provided with a central fire nozzle seat, a first main fire nozzle seat and a second main fire nozzle seat, the lower surface of the combustor support is fixedly provided with a central fire air inlet end and a main fire air inlet end, the central fire air inlet end is communicated with the central fire nozzle seat, the first main fire nozzle seat and the second main fire nozzle seat are both communicated with the main fire air inlet end, the combustor support is provided with an ignition needle thermocouple fixing frame, the ignition needle thermocouple fixing frame is provided with a thermocouple mounting hole and an ignition needle mounting hole, the thermocouple is arranged in the thermocouple mounting hole, and the ignition needle is arranged in the ignition needle mounting hole; the central fire nozzle is mounted on the central fire nozzle seat, the central fire nozzle on the central fire nozzle seat is coaxial with the inlet end of the central fire ejector, a gap exists between the end face of the central fire nozzle seat and the end face of the inlet end of the central fire ejector, a first main fire nozzle is mounted on the first main fire nozzle seat, the first main fire nozzle of the first main fire nozzle seat is coaxial with the inlet end of the first main fire ejector, a gap exists between the end face of the first main fire nozzle seat and the end face of the inlet end of the first main fire ejector, a second main fire nozzle is mounted on the second main fire nozzle seat, the second main fire nozzle of the second main fire nozzle seat is coaxial with the inlet end of the second main fire ejector, and a gap exists between the end face of the second main fire nozzle seat and the end face of the inlet end of the second main fire ejector.

Further, the burner head comprises a middle partition plate, an outer ring fire bottom plate, an outer ring fire outer wall, an outer ring fire inner wall and a center fire outer wall, wherein the outer ring fire outer wall, the outer ring fire inner wall and the center fire outer wall are coaxially arranged on the middle partition plate, the outer ring fire inner wall is arranged on the periphery of the center fire outer wall, and the outer ring fire outer wall is arranged on the periphery of the outer ring fire inner wall; the lower edge of the outer ring fire outer wall, the lower edge of the outer ring fire inner wall and the lower edge of the central fire outer wall are fixedly connected with the upper surface of the middle partition plate, the outer ring fire bottom plate is arranged between the outer ring fire outer wall and the outer ring fire inner wall and positioned above the middle partition plate, the outer edge of the outer ring fire bottom plate is fixedly connected with the outer ring fire outer wall, the inner edge of the outer ring fire bottom plate is fixedly connected with the outer ring fire inner wall, the gas distribution channel longitudinally penetrates through the outer ring fire bottom plate and the middle partition plate, the side wall of the gas distribution channel is a vertical partition plate arranged between the middle partition plate and the outer ring fire bottom plate, the upper edge of the vertical partition plate is fixedly connected with the outer ring fire bottom plate, the lower edge of the vertical partition plate is fixedly connected; the cavity enclosed by the upper surface of the outer ring fire bottom plate, the inner surface of the outer ring fire outer wall and the outer surface of the outer ring fire inner wall is an outer ring fire distributing cavity, and the cavity enclosed by the inner surface of the center fire outer wall is a center fire mixing cavity.

Further, the number of the gas distribution passages may be two or more (preferably three).

Further, the cavity that the lower surface of outer ring fire bottom plate, the upper surface of intermediate bottom plate, the opposite face of two vertical baffles enclosed is for promoting to fire the air cavity, all opens the air vent with promoting to fire the air cavity intercommunication on outer ring fire outer wall and the outer ring fire inner wall to do benefit to and make the air outside the air vent of outer ring fire outer wall get into the cavity that the internal surface of outer ring fire inner wall and the surface of intermediate fire outer wall enclose through the air vent of outer ring fire outer wall, promote to fire the air cavity, the air vent on the outer ring fire inner wall.

Under the effect of intermediate bottom, keep apart primary air and secondary air, primary air introduces from intermediate bottom below, and secondary air introduces from intermediate bottom top, plays the effect that prevents to rob gas, disturb to promote the stability of burning.

Further, the plate thickness of the intermediate partition plate is gradually reduced from the central axis of the intermediate partition plate to the outer edge of the intermediate partition plate, so that the liquid falling onto the intermediate partition plate can flow out of the combustion promoting air cavity.

Further, a water tray is arranged between the bottom of the combustor and the combustor support.

Further, the bottom of the burner comprises a flange plate, the upper surface of the flange plate is provided with a groove, and the groove on the upper surface of the flange plate is a main fire middle mixing cavity. The inlet end of the central fire ejector, the inlet end of the first main fire ejector and the inlet end of the second main fire ejector are fixed on the lower surface of the flange plate.

Furthermore, the projections of the inlet ends of the first main fire nozzle, the second main fire nozzle, the central fire nozzle and the central fire ejector, the inlet end of the first main fire ejector and the inlet end of the second main fire ejector on the plane of the intermediate partition plate are all located in the outer edge of the intermediate partition plate.

Furthermore, more than 2 fixing columns are fixed on the lower surface of a flange plate at the bottom of the burner, the upper surfaces of the fixing columns are fixedly connected with the lower surface of the flange plate, a through hole is formed in the center of each fixing column, a through hole longitudinally penetrating through the flange plate is formed in the flange plate, the central through hole of each fixing column is coaxial with and communicated with the through hole in the flange plate, the central through hole of each fixing column and the through hole in the flange plate form a step connecting hole together, the sectional area of the upper part of the step connecting hole and the sectional area of the lower part of the step connecting hole are both larger than the sectional area of the; a cylinder is fixed on the lower surface of a middle clapboard at the head part of the burner, the upper surface of the cylinder is fixedly connected with the lower surface of the middle clapboard, the cylinder on the lower surface of the middle clapboard is sleeved on the upper part of the step connecting hole, and the lower end of the cylinder on the lower surface of the middle clapboard is provided with a connecting hole; the fastener sequentially penetrates through the lower part of the step connecting hole and the middle part of the step connecting hole from bottom to top and extends into the cylindrical connecting hole on the lower surface of the middle partition plate, so that the head part and the bottom part of the combustor are connected and fixed; the fastener may be a screw;

the inner diameter of the lower part of the step connecting hole is matched with the outer diameter of the upper end of the supporting column, and the upper end of the supporting column is inserted into the lower part of the step connecting hole to support the bottom of the combustor;

a support column mounting hole is formed in the water tray, a support column mounting hole is also formed in the upper surface of the burner support, and the lower end of the support column penetrates through the support column mounting hole in the water tray and then extends into the support column mounting hole in the upper surface of the burner support;

the lower surface of the combustor support is fixed with a support leg, the lower end of the support leg is provided with a connecting hole, the chassis of the gas cooker or the integrated cooker product is also provided with a connecting hole, and the connection is realized through a connecting piece arranged in the connecting hole at the lower end of the support leg and the connecting hole on the chassis. The connecting holes at the lower ends of the support legs and the connecting holes on the base plate can be threaded holes, and the connecting pieces can be screws.

The connection between the burner head and the burner base can also be made by riveting or by integral casting of the two. The riveting structure can be arranged according to actual requirements, for example, the outer edge of the horizontal partition plate at the head of the burner is bent downwards, the outer edge of the flange plate at the bottom of the burner is bent upwards, and the outer edge of the horizontal partition plate bent downwards is riveted in the outer edge of the flange plate bent upwards.

Furthermore, a first main fire nozzle seat through hole, a second main fire nozzle seat through hole and a center fire nozzle seat through hole are formed in the water disc, the center fire nozzle seat positioned on the upper surface of the burner support penetrates through the center fire nozzle seat through hole, the first main fire nozzle seat positioned on the upper surface of the burner support penetrates through the first main fire nozzle seat through hole, and the second main fire nozzle seat positioned on the upper surface of the burner support penetrates through the second main fire nozzle seat through hole.

Furthermore, the completely upper air inlet burner also comprises an anti-dry burning probe, and the head of the anti-dry burning probe sequentially penetrates through the burner support, the flange plate at the bottom of the burner and the middle partition plate at the head of the burner and then extends out of the upper surface of the central fire cover. At the moment, anti-dry heating probe through holes are formed in the burner support, the flange at the bottom of the burner, the middle partition plate at the head of the burner and the central fire cover.

Further, when the inlet end of the central fire ejector, the inlet end of the first main fire ejector and the inlet end of the second main fire ejector are fixed on the lower surface of the bottom of the burner, the inlet end of the first main fire ejector and the inlet end of the second main fire ejector are arranged on two sides of the inlet end of the central fire ejector.

Furthermore, the maximum inner diameter height of the outlet end of the first main fire ejector and the maximum inner diameter height of the outlet end of the second main fire ejector are both smaller than the height of the main fire middle mixing cavity, so that airflow sprayed from the outlet ends of the first main fire ejector and the second main fire ejector can completely enter the main fire middle mixing cavity.

Further, the central axis of the outlet end of the central fire ejector is superposed with the central axis of the burner head; or the central axis of the outlet end of the central fire ejector is positioned on one side, far away from the end face of the inlet end of the central fire ejector, of the central axis of the head of the burner, namely, the central axis of the outlet end of the central fire ejector and the end face of the inlet end of the central fire ejector are respectively positioned on two sides of the central axis of the head of the burner, so that the length of the central fire ejector pipe can be lengthened to the maximum extent, and the ejector coefficient can be improved.

Furthermore, the inlet end of the central fire ejector, the inlet end of the first main fire ejector and the inlet end of the second main fire ejector are all positioned on the same side of the lower surface of the bottom of the combustor; or the inlet end of the central fire ejector is positioned on one side of the lower surface of the bottom of the combustor, and the inlet end of the first main fire ejector and the inlet end of the second main fire ejector are both positioned on the other side of the lower surface of the bottom of the combustor. The outer end face of the first main fire nozzle and the outer end face of the second main fire nozzle are located on the same vertical plane. When the inlet end of the central fire ejector, the inlet end of the first main fire ejector and the inlet end of the second main fire ejector are located on the same side of the lower surface of the bottom of the combustor, the outer end face of the central fire nozzle and the outer end face of the first main fire nozzle are staggered back and forth by more than 3 mm.

Furthermore, the inlet end of the central fire ejector, the inlet end of the first main fire ejector and the inlet end of the second main fire ejector are provided with chamfers.

Furthermore, the inlet end of the central fire ejector, the inlet end of the first main fire ejector and the inlet end of the second main fire ejector are all of a single-pipe structure; when the inlet end of the central fire ejector, the inlet end of the first main fire ejector and the inlet end of the second main fire ejector are of a single-tube structure, the inner diameters of the inlet end of the central fire ejector on different vertical sections are equal, the inner diameters of the inlet end of the first main fire ejector on different vertical sections are equal, and the inner diameters of the inlet end of the second main fire ejector on different vertical sections are equal.

The entry end of center fire ejector, the entry end of first main fire ejector, the entry end of second main fire ejector all can be the double-barrelled structure the same, and this double-barrelled structure can be called venturi structure to do benefit to simplified process, promote the stability of product. When the entry end of center fire ejector is double-barrelled structure, the entry end of center fire ejector is including drawing the injection inner tube and drawing the ejection outer tube, draws the injection inner tube cover in drawing the injection outer tube, draws the internal diameter of injection inner tube to draw the head end of injection inner tube to reduce gradually from drawing the tail end of injection inner tube, draws the head end of injection inner tube and is close to the outer terminal surface of entry end of center fire ejector, and the outer terminal surface of entry end of center fire ejector is the outer terminal surface that draws the ejection outer tube promptly.

Further, the central fire nozzle comprises an air entraining section, a front thread section and a rear thread section, the air entraining section is arranged between the front thread section and the rear thread section, through holes are formed in the center of the air entraining section, the center of the front thread section and the center of the rear thread section, the central through hole of the air entraining section, the central through hole of the front thread section and the central through hole of the rear thread section are sequentially communicated, an air entraining hole communicated with the central through hole of the induction section is formed in the periphery of the air entraining section, and external threads are formed in the outer wall of the front thread section and the outer wall of the rear thread section; the first main fire nozzle and the second main fire nozzle are the same as the central fire nozzle in structure. The central fire nozzle can be in threaded connection with the central fire nozzle base through the rear threaded section of the central fire nozzle, and the central fire nozzle base is provided with an internal thread matched with the external thread of the rear threaded section of the central fire nozzle. First main fire nozzle accessible first main fire nozzle's back screw thread section and first main fire nozzle holder threaded connection, first main fire nozzle holder be equipped with the internal thread of the external screw thread adaptation of the back screw thread section of first main fire nozzle. The second main fire nozzle can be in threaded connection with the second main fire nozzle seat through the rear threaded section of the second main fire nozzle, and the second main fire nozzle seat is provided with an internal thread matched with the external thread of the rear threaded section of the second main fire nozzle.

The air-entraining section of the central fire nozzle, the air-entraining section of the first main fire nozzle and the air-entraining section of the second main fire nozzle can be of an outer hexagonal nut structure.

The cover has central fire air door cover on the central fire nozzle, and the one end inner wall of central fire air door cover is the smooth surface, and central fire air door cover inner wall overlaps on the bleed section of central fire nozzle for the one end of smooth surface, and the other end inner wall of central fire air door cover is equipped with the internal thread with the external screw thread adaptation of the preceding screw thread section of central fire nozzle, and central fire air door cover is equipped with the internal thread other end and revolves on the preceding screw thread section of central fire nozzle. The outer wall impression of central fire air door pocket has outer line to do benefit to not skid when operating central fire air door pocket. The center fire air door sleeve is rotated, so that the coincidence area of the center fire air door sleeve and the air-entraining holes in the periphery of the air-entraining section of the center fire nozzle can be adjusted, and the adjustment of the amount of air introduced into the air-entraining holes in the periphery of the air-entraining section of the center fire nozzle is realized.

The central fire nozzle can be sleeved with two central fire air door sleeves, for convenience of description, a first central fire air door sleeve and a second central fire air door sleeve are hereinafter referred to as a first central fire air door sleeve and a second central fire air door sleeve, one end, with the inner wall of the first central fire air door sleeve being a smooth surface, of the first central fire air door sleeve is sleeved on the air entraining section of the central fire nozzle, and the other end, provided with the internal thread, of the first central fire air door sleeve is screwed on the front thread section of the central fire nozzle; one end of the second central fire air door sleeve provided with the internal thread is also screwed on the front thread section of the central fire nozzle, the second central fire air door sleeve is positioned in front of the first central fire air door sleeve, and the outer end face of the second central fire air door sleeve extends out of the outer end face of the central fire nozzle; under the effect of first center fire air door pocket, the air capacity size is introduced to the bleed hole of adjustable center fire nozzle's bleed section periphery, under the effect of second center fire air door pocket, the distance between the outer terminal surface of adjustable second center fire air door pocket and the entry end terminal surface of center fire ejector to the air capacity size between the entry end of adjusting center fire nozzle and center fire ejector.

The first main fire nozzle is sleeved with a first main fire air door sleeve, the second main fire nozzle is sleeved with a second main fire air door sleeve, and the structures of the first main fire air door sleeve and the second main fire air door sleeve are the same as the structure of the central fire air door sleeve. The first main fire nozzle can also be sleeved with two first main fire air door sleeves; two second main fire air door sleeves can be sleeved on the second main fire nozzle. The number of the air door sleeves on each nozzle can be set according to actual conditions.

Furthermore, a fixing frame through hole is formed in the water disc, a fixing frame through hole is also formed in the flange plate at the bottom of the combustor, a fixing frame through hole is formed in the middle partition plate at the head of the combustor, and the ignition needle thermocouple fixing frame sequentially penetrates through the fixing frame through hole in the water disc, the fixing frame through hole in the flange plate at the bottom of the combustor and the fixing frame through hole in the middle partition plate at the head of the combustor, so that the circumferential positions of the water disc, the bottom of the combustor and the head of the combustor can be conveniently located. The upper surface of the burner support is provided with a groove, the groove on the upper surface of the burner support is internally provided with an ignition needle through hole and a thermocouple through hole, both the ignition needle through hole and the thermocouple through hole can be round holes, the upper end of an ignition needle upwards passes through the ignition needle through hole and the lower end of the ignition needle is arranged below the ignition needle through hole, the upper end of the thermocouple upwards passes through the thermocouple through hole and the lower end of the thermocouple is arranged below the thermocouple through hole, the periphery of the ignition needle and the periphery of the thermocouple are sleeved with an opening retainer ring or a fixing flange respectively, the two opening retainer rings or the fixing flanges are respectively positioned on the ignition needle through hole and the thermocouple through hole, the opening retainer ring or the fixing flange on the periphery of the ignition needle is pressed into the groove on the upper surface of the burner support from the upper end of the ignition needle to the lower end and is positioned on the ignition needle through hole, the opening retainer ring or the fixing flange on the periphery, so as to be beneficial to realizing the fixation of the positions of the ignition needle and the thermocouple; the ignition needle thermocouple fixing frame is sleeved on the ignition needle and the thermocouple through an ignition needle mounting hole and a thermocouple mounting hole of the ignition needle thermocouple fixing frame (during specific installation, the ignition needle mounting hole is aligned with the ignition needle, and the thermocouple mounting hole is aligned with the thermocouple), the upper end of the ignition needle extends into a position between the outer ring fire inner wall and the central fire outer wall, the upper end of the thermocouple extends into a position between the outer ring fire inner wall and the central fire outer wall, the lower end of the ignition needle thermocouple fixing frame is arranged in a groove in the upper surface of the combustor support, the lower end of the ignition needle thermocouple fixing frame is fixed in the groove in the upper surface of the combustor support through fixing screws, the upper end of the ignition needle thermocouple fixing frame sequentially penetrates through a fixing frame through hole in the water tray, a fixing frame through hole in a flange plate at the bottom of the combustor and a fixing frame through, The circumferential position of the burner head is positioned; when the ignition needle and the thermocouple need to be taken out in after-sale maintenance, the central fire cover, the outer ring fire cover, the burner head and the burner bottom are removed, the water disc is taken down, the fixing screw is unscrewed, the ignition needle and the thermocouple fixing frame can be taken out together with the thermocouple and the ignition needle, the burner support does not need to be detached, the ignition needle and the thermocouple can be conveniently taken out, and the time saving and safety are realized.

The combustor support is also provided with a wire passing channel and a support center strip hole, the ignition needle through jack and the thermocouple through jack are both communicated with one end of the wire passing channel, and the other end of the wire passing channel is communicated with the support center strip hole. The ignition needle and the thermocouple are both connected with a wire plug through wires (the wire plugs of the ignition needle and the thermocouple are mature parts of the existing burner and are not described herein any more), and the sectional area of the central strip hole of the support is larger than that of the wire plug. Because the wire plug is too large in size and cannot penetrate through the ignition needle through hole and the thermocouple through hole, when the ignition needle and the thermocouple are installed on the combustor, the wire plug can firstly penetrate through the central strip hole of the support, then the electric wire penetrates through the wire passing channel, the electric wire and the wire plug can be moved onto the combustor support and then are connected with an igniter and an electromagnetic valve of a gas stove or an integrated stove product, the igniter is used for igniting the ignition needle, and the electromagnetic valve is used for electrifying the thermocouple.

When the burner support works, the central fire air inlet end and the main fire air inlet end of the lower surface of the burner support are externally connected with a gas pipeline, gas enters the central fire air inlet end and the main fire air inlet end through the gas pipeline, the gas entering the central fire air inlet end is sprayed out from the central fire nozzle of the central fire nozzle seat, and the gas entering the main fire air inlet end is sprayed out from the first main fire nozzle of the first main fire nozzle seat and the second main fire nozzle of the second main fire nozzle seat. The gas ejected from the central fire nozzle, the inlet end of the second main fire ejector and the inlet end of the central fire ejector respectively enters the first main fire ejector, the second main fire ejector and the central fire ejector through the inlet end of the first main fire ejector, the inlet end of the second main fire ejector and the inlet end of the central fire ejector, and then is ejected from the outlet end of the first main fire ejector, the outlet end of the second main fire ejector and the outlet end of the central fire ejector. The mixed airflow of the primary air and the fuel gas coming out from the outlet end of the first main fire ejector and the mixed airflow of the primary air and the fuel gas coming out from the outlet end of the second main fire ejector are mixed in the main fire middle mixing cavity, then enter the outer ring fire distribution cavity through the gas distribution channel, and finally are ejected out of the outer ring fire outlet hole of the outer ring fire cover for combustion. The mixed airflow of the primary air and the fuel gas from the outlet end of the central fire ejector enters the central fire mixing cavity and is finally sprayed out from the central fire outlet hole of the central fire cover for combustion. After the mixed air flow is sprayed out from the outer ring fire outlet holes and the central fire outlet holes of the outer ring fire cover, combustion promoting air required by combustion is called secondary air, and the secondary air mainly comprises air on the periphery of the central fire cover and air in the combustion promoting air cavity.

The central fire nozzle on the central fire nozzle seat is coaxial with the inlet end of the central fire ejector, a gap exists between the end surface of the central fire nozzle seat and the end surface of the inlet end of the central fire ejector, the first main fire nozzle of the first main fire nozzle seat is coaxial with the inlet end of the first main fire ejector, a gap exists between the end surface of the first main fire nozzle seat and the end surface of the inlet end of the first main fire ejector, the second main fire nozzle of the second main fire nozzle seat is coaxial with the inlet end of the second main fire ejector, and a gap exists between the end surface of the second main fire nozzle seat and the end surface of the inlet end of the second main fire ejector, so that primary air can be injected into the central fire ejector, the first main fire ejector and the second main fire ejector.

The fixed connection is manufactured as a whole or realized by the existing mature modes such as tight fit, screws, welding and the like.

During installation, the ignition needle and the thermocouple penetrate through the ignition needle through hole and the thermocouple through hole of the combustor support, the ignition needle and the thermocouple are fixed in position through the split washer or the fixing flange, the wire plug penetrates through the support center strip hole, the electric wire penetrates through the wire passing channel, then the ignition needle thermocouple fixing frame is sleeved on the ignition needle and the thermocouple, and the ignition needle thermocouple fixing frame is fixed on the combustor support through the fixing screw. The water tray is located on the front of the combustor support, and the central fire nozzle seat, the first main fire nozzle seat, the second main fire nozzle seat, the ignition needle and the thermocouple all extend out to the upper portion of the water tray. Then the connection between the burner support and the water tray is realized through the lower end of the support column, when the lower end of the support column passes through the support column mounting hole on the water tray and extends into the support column mounting hole on the upper surface of the burner support, the outer edge of the water tray is pressed on the panel of the gas cooker (or integrated cooker product) under the action of the support column, the back of the burner support is positioned below the panel of the gas cooker or integrated cooker product, and the support leg on the lower surface of the burner support is connected with the connecting hole on the chassis of the gas cooker (or integrated cooker product) through a connecting piece; the burner support, the water tray, the ignition needle, the thermocouple, the ignition needle thermocouple fixing frame and the gas cooker or the integrated cooker product form a whole;

the central fire nozzle seat, the first main fire nozzle seat, the second main fire nozzle seat, the ignition needle and the thermocouple all extend out to the upper part of the water tray, and the water tray is positioned on the front surface of the combustor support.

Sleeving a cylinder on the lower surface of a middle partition plate of the head of the burner into the upper part of the step connecting hole, and sequentially penetrating a fastener through the lower part of the step connecting hole and the middle part of the step connecting hole from bottom to top to extend into the cylindrical connecting hole on the lower surface of the middle partition plate, so as to realize the connection and fixation of the head of the burner and the bottom of the burner; and inserting the upper end of the support column into the lower part of the step connecting hole, and finally covering the outer ring fire cover and the central fire cover. The burner bottom, the burner head, the outer ring fire cover and the central fire cover can be taken and placed in real time, namely, the central fire cover, the outer ring fire cover, the burner head and the whole body of the burner bottom which are connected through the fastening piece can be sequentially taken away from the upper part of the water tray to the lower part of the water tray, and the whole body, the outer ring fire cover and the central fire cover which are sequentially assembled above the water tray through the fastening piece can also be sequentially assembled from the lower part to the upper part. Primary air and secondary air all get into the combustor from the water tray top, and gas cooking utensils or integrated kitchen product panel below need not into the air, have realized going up the air inlet completely, do not have special requirement to the installation condition, and the cupboard cabinet door need not to set up the ventilation hole when being applied to ordinary gas-cooker, also need not to set up when being applied to integrated kitchen and act as go-between and operate the mechanism, and application scope is wider, and operational reliability is high.

The invention is provided with a first main fire ejector and a second main fire ejector, and the ejection capacity of the two main fire ejectors is twice that of a single ejector; and the central fire ejector penetrates through the main fire middle-arranged mixing cavity and then is communicated with the central fire mixing cavity, so that the size of the central fire ejector is lengthened to the maximum extent, the ejection coefficient is good, the requirement of high-power combustion can be met, and the problems of red fire, yellow flame and the like cannot occur after the central fire ejector burns for a long time. The exit end of first main fire ejector, the exit end of second main fire ejector all put the hybrid chamber intercommunication in with main fire for gas and air mixing are more even, and combustion efficiency is high, and the efficiency is high, and stability is good, puts the hybrid chamber in the main fire and further mixes the back, divides the outside ring fire of gas distribution channel again to divide the fire chamber to carry, and the blowout is covered from the outer ring fire at last, forms high-efficient stable combustion.

When the cabinet door is applied to a common gas stove, the cabinet door does not need to be provided with an air hole, so that the overall harmony of a cabinet room is better improved; simultaneously the injection of first main fire nozzle, second main fire nozzle and central fire nozzle, the injection of first main fire ejector, second main fire ejector and central fire ejector is all accomplished on the panel of gas cooking utensils or integrated kitchen product, the defect such as deposit and the tempering of gas has been stopped, simultaneously because the outer fringe of water dish is pressed on the panel of gas cooking utensils (or integrated kitchen product), the effectual inside temperature rise of gas cooking utensils or integrated kitchen complete machine that has reduced, better promotion the stability and the reliability of gas cooking utensils or integrated kitchen product. When the invention is applied to the integrated stove, the upper air inlet is adopted by the burner, so that a wire operating mechanism is not required to be arranged on the integrated stove, and an air door is not required to be adjusted by the wire operating mechanism, thus the invention is more convenient to use. And moreover, as the lower part of the integrated cooker is generally provided with a strong current structure, such as a motor, a steaming oven and other strong current equipment, and the combustor adopts an upper air inlet structure, the structure is similar to that of a common gas cooker, so that the safety and the stability of the product are better improved.

The invention has compact structure, good stability, large combustion power and high working reliability, can effectively reduce energy utilization and material consumption, and is suitable for mass production.

Drawings

Fig. 1 is an overall exploded view of the fully upwind burner shown in example 1.

Fig. 2 is a perspective view of the assembled burner head and burner base of the fully updraft burner of example 1.

Fig. 3 is an exploded view of the burner head and burner base of the fully updraft burner shown in example 1.

Fig. 4 is a perspective view of the burner bottom of the fully updraft burner shown in example 1.

Fig. 5 is another perspective view of the burner bottom of the fully updraft burner of embodiment 1.

Fig. 6 is an exploded view of the burner mount of the fully overfire air burner shown in example 1.

Fig. 7 is a sectional view of the burner head and burner bottom of the fully updraft burner shown in example 1 assembled.

Fig. 8 is a perspective view of the burner mount of the fully overfeed burner shown in example 1.

Fig. 9 is a perspective view of the burner mount of the fully updraft burner of example 1 assembled with an ignition needle and a thermocouple.

Fig. 10 is a perspective view of the central fire nozzle of the fully overfire air burner of example 1.

Fig. 11 is a perspective view of the assembled center fire nozzle and center fire damper cover of the fully overfire air burner of example 1.

Fig. 12 is a perspective view of the burner head of the fully overfire air burner shown in example 1.

Fig. 13 is a sectional view of the stepped connection hole of the fully updraft burner shown in example 1.

Fig. 14 is an overall exploded view of the fully upwind burner shown in example 2.

FIG. 15 is a graph of the position distribution of the inlet end of the central fire injector, the inlet end of the first main fire injector and the inlet end of the second main fire injector of the full top intake burner of example 2.

Fig. 16 is a cross-sectional view of the central fire injector inlet end of the fully updraft burner of example 2 as a double tube.

For the sake of simplicity, the burner bottom is not shown in fig. 14, and the structure of the burner bottom not shown is the same as that of the burner bottom in fig. 1.

In the figure: 1. a central fire cover, 2, an outer ring fire cover, 3, a burner head, 4, a burner bottom, 5, a burner support, 6, a central fire ejector, 61, an inlet end of the central fire ejector, 7, a first main fire ejector, 71, an inlet end of the first main fire ejector, 8, a second main fire ejector, 81, an inlet end of the second main fire ejector, 9, an outer ring fire sub-fire chamber, 10, a central fire mixing chamber, 11, a central fire outlet hole, 12, an outer ring fire outlet hole, 13, a gas distribution channel, 14, a main fire mixing chamber, 15, a central fire nozzle seat, 16, a first main fire seat, 17, a second main fire nozzle seat, 18, a central fire inlet end, 19, a main fire inlet end, 20, an ignition needle thermocouple fixing frame, 21, a thermocouple mounting hole, 22, an ignition needle mounting hole, 23, a thermocouple, a middle-positioned nozzle seat, 24, an ignition needle, 25, a central fire nozzle, 26. first main fire nozzle, 27, second main fire nozzle, 28, middle partition board of burner head, 29, outer ring fire bottom board of burner head, 30, outer ring fire outer wall of burner head, 31, outer ring fire inner wall of burner head, 32, central fire outer wall of burner head, 33, vertical partition board, 34, combustion promoting air cavity, 35, vent hole on outer ring fire outer wall communicated with combustion promoting air cavity, 36, vent hole on outer ring fire inner wall communicated with combustion promoting air cavity, 37, water disk, 38, flange plate of burner bottom, 39, fixing column, 40, support column, 41, support column mounting hole on water disk, 42, support leg, 43, support column mounting hole on burner support, 44, first main fire nozzle seat through hole, 45, second main fire nozzle seat through hole, 46, central fire nozzle seat through hole, 47, air entraining section of central fire nozzle, 48, and, A front thread section of the central fire nozzle, a 49 rear thread section of the central fire nozzle, a 50 air guide hole on the air guide section, a 51 central fire air door sleeve, a 52 first main fire air door sleeve, a 53 second main fire air door sleeve, a 54 fixing frame through hole on the water plate, a 55 fixing frame through hole on a flange plate at the bottom of the burner, a 57 groove on the upper surface of the burner support, a 58 ignition needle through hole, a 59 thermocouple through hole, a 60 opening check ring, a 62 opening check ring, a wire passing channel, a 63, the device comprises a support center strip hole, 64, a fixing screw, 65, an anti-dry heating probe, 66, a through hole on a flange plate, 67, a step connecting hole, 68, a step in the step connecting hole, 69, a cylinder on the lower surface of a middle partition plate, 70, a fastener, 72, an injection inner pipe, 73, an injection outer pipe, A, a central axis of an outlet end of a center fire injector, B and a central axis of a burner head.

Detailed Description

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

Example 1:

referring to fig. 1-13, the fully upper intake burner with a centrally-located mixing chamber comprises a central fire cover 1, an outer ring fire cover 2, a burner head 3, a burner bottom 4, a burner support 5, a central fire ejector 6, a first main fire ejector 7 and a second main fire ejector 8, wherein an outer ring fire distribution chamber 9 and a central fire mixing chamber 10 are arranged in the burner head 3, a central fire outlet 11 is arranged on the central fire cover 1, the central fire cover 1 covers the central fire mixing chamber 10, an outer ring fire outlet 12 is arranged on the outer ring fire cover 2, the outer ring fire cover 2 covers the outer ring fire distribution chamber 9, a gas distribution channel 13 is further arranged in the burner head 3, the upper end of the gas distribution channel 13 is communicated with the outer ring fire distribution chamber 9, a main fire centrally-located mixing chamber 14 is arranged in the burner bottom 4, the lower end of the gas distribution channel 13 is communicated with the main fire centrally-located mixing chamber 14, an inlet end 61, an outer ring fire ejector 6, a central fire ejector 6, An inlet end 71 of the first main fire ejector 7 and an inlet end 81 of the second main fire ejector 8 are fixed on the lower surface of the bottom 4 of the burner, an outlet end of the central fire ejector 6 penetrates through the main fire middle mixing cavity 14 and then is communicated with the central fire mixing cavity 10, the outlet end of the first main fire ejector 7 and the outlet end of the second main fire ejector 8 are directly communicated with the main fire middle mixing cavity 14, a central fire nozzle seat 15, a first main fire nozzle seat 16 and a second main fire nozzle seat 17 are fixed on the upper surface of the burner support 5, a central fire air inlet end 18 and a main fire air inlet end 19 are fixed on the lower surface of the burner support 5, the central fire air inlet end 18 is communicated with the central fire nozzle seat 15, the first main fire nozzle seat 16 and the second main fire nozzle seat 17 are both communicated with the main fire air inlet end 19, an ignition needle thermocouple fixing frame 20 is arranged on the burner support 5, a thermocouple mounting hole 21 and an ignition needle mounting hole 22 are formed in the ignition needle thermocouple 20, the thermocouple 23 is arranged in the thermocouple mounting hole 21, and the ignition needle 24 is arranged in the ignition needle mounting hole 22; the central fire nozzle seat 15 is provided with a central fire nozzle 25, the central fire nozzle 25 on the central fire nozzle seat 15 is coaxial with the inlet end 61 of the central fire ejector 6, a gap is formed between the end surface of the central fire nozzle 25 of the central fire nozzle seat 15 and the end surface of the inlet end 61 of the central fire ejector 6, the first main fire nozzle 26 is arranged on the first main fire nozzle seat 16, the first main fire nozzle 26 of the first main fire nozzle seat 16 is coaxial with the inlet end 71 of the first main fire ejector 7, a gap is formed between the end surface of the first main fire nozzle 26 of the first main fire nozzle seat 16 and the end surface of the inlet end 71 of the first main fire ejector 7, the second main fire nozzle seat 17 is provided with a second main fire nozzle 27, the second main fire nozzle 27 of the second main fire nozzle seat 17 is coaxial with the inlet end 81 of the second main fire ejector 8, and a gap is formed between the end surface of the second main fire nozzle seat 17 and the end surface of the inlet end of the second main fire ejector 8.

The burner head 3 comprises a middle clapboard 28, an outer ring fire bottom plate 29, an outer ring fire outer wall 30, an outer ring fire inner wall 31 and a center fire outer wall 32, wherein the outer ring fire outer wall 30, the outer ring fire inner wall 31 and the center fire outer wall 32 are coaxially arranged on the middle clapboard 28, the outer ring fire inner wall 31 is arranged at the periphery of the center fire outer wall 32, and the outer ring fire outer wall 30 is arranged at the periphery of the outer ring fire inner wall 31; the lower edge of the outer ring fire wall 30, the lower edge of the inner ring fire wall 31 and the lower edge of the outer ring fire wall 32 are fixedly connected with the upper surface of the middle partition plate 28, the outer ring fire bottom plate 29 is arranged between the outer ring fire wall 30 and the inner ring fire wall 31 and positioned above the middle partition plate 28, the outer edge of the outer ring fire bottom plate 29 is fixedly connected with the outer ring fire wall 30, the inner edge of the outer ring fire bottom plate 29 is fixedly connected with the outer ring fire inner wall 31, the gas distribution channel 13 longitudinally penetrates through the outer ring fire bottom plate 29 and the middle partition plate 28, the side wall of the gas distribution channel 13 is a vertical partition plate 33 arranged between the middle partition plate 28 and the outer ring fire bottom plate 29, the upper edge of the vertical partition plate 33 is fixedly connected with the outer ring fire bottom plate 29, the lower edge of the vertical partition plate 33 is fixedly connected with the middle partition plate 28, the inner; the cavity enclosed by the upper surface of the outer fire bottom plate 29, the inner surface of the outer fire outer wall 30 and the outer surface of the outer fire inner wall 31 is an outer fire distributing cavity 9, and the cavity enclosed by the inner surface of the central fire outer wall 32 is a central fire mixing cavity 10.

The number of the gas distribution channels 13 may be two or more, and in this embodiment, the number of the gas distribution channels 13 is three.

The cavity enclosed by the lower surface of the outer ring fire bottom plate 29, the upper surface of the middle partition plate 28 and the opposite surfaces of the two vertical partition plates 33 is a combustion promoting air cavity 34, the outer ring fire outer wall 30 is provided with vent holes 35 communicated with the combustion promoting air cavity 34, the outer ring fire inner wall 31 is provided with vent holes 36 communicated with the combustion promoting air cavity 34, so that air outside the vent holes 35 of the outer ring fire outer wall 30 can enter the cavity enclosed by the inner surface of the outer ring fire inner wall 31 and the outer surface of the center fire outer wall 32 through the vent holes 35 of the outer ring fire outer wall 30, the combustion promoting air cavity 34 and the vent holes 36 on the outer ring fire inner wall 31.

Under the effect of intermediate bottom 28, keep apart primary air and secondary air, primary air introduces from the intermediate bottom 28 below, and secondary air introduces from the intermediate bottom 28 top, plays the effect of preventing robbing gas, disturbing to promote the stability of burning.

The plate thickness of the intermediate partition 28 is gradually reduced from the central axis of the intermediate partition 28 to the outer edge of the intermediate partition 28 to facilitate the liquid falling onto the intermediate partition 28 to flow out of the pilot gas chamber 34.

A water tray 37 is provided between the burner base 4 and the burner support 5.

The burner bottom 4 comprises a flange 38, the upper surface of the flange 38 is provided with a groove, and the groove on the upper surface of the flange 38 is a main fire centrally-arranged mixing cavity 14. The inlet end 61 of the central fire injector 6, the inlet end 71 of the first main fire injector 7 and the inlet end 81 of the second main fire injector 8 are all fixed to the lower surface of the flange 38.

The projections of the first main fire nozzle 26, the second main fire nozzle 27, the central fire nozzle 25, the inlet end 61 of the central fire injector 6, the inlet end 71 of the first main fire injector 7 and the inlet end 81 of the second main fire injector 8 on the plane of the intermediate partition 28 are all located in the outer edge of the intermediate partition 28. The projection of the intermediate baffle 28 onto the plane of the water tray 37 is located within the outer edge of the water tray 37. Under the action of the intermediate partition plate 28 and the water tray 37, the liquid which is mistakenly operated or drips on the intermediate partition plate 28 can be shunted to the water tray 37, so that the interference on the combustion stability is reduced.

The lower surface of a flange plate 38 at the bottom 4 of the burner is fixedly provided with 3 fixing columns 39, the upper surfaces of the fixing columns 39 are fixedly connected with the lower surface of the flange plate 38, the center of each fixing column 39 is provided with a through hole, the flange plate 38 is provided with a through hole 66 which longitudinally penetrates through the flange plate 38, the center through holes of the fixing columns 39 and the through holes 66 on the flange plate 38 are coaxial and mutually communicated, the center through holes of the fixing columns 39 and the through holes 66 on the flange plate 38 jointly form a step connecting hole 67, the sectional area of the upper part of the step connecting hole 67 and the sectional area of the lower part of the step connecting hole 67 are both larger than the sectional area of the middle part of the; a cylinder 69 is fixed on the lower surface of the middle clapboard 28 of the burner head part 3, the upper surface of the cylinder 69 is fixedly connected with the lower surface of the middle clapboard 28, the cylinder 69 on the lower surface of the middle clapboard 28 is sleeved on the upper part of the step connecting hole 67, and the lower end of the cylinder 69 on the lower surface of the middle clapboard 28 is provided with a connecting hole; the fastener 70 sequentially penetrates through the lower part of the step connecting hole 67 and the middle part of the step connecting hole 67 from bottom to top and extends into the connecting hole of the column 69 on the lower surface of the middle clapboard 28, so that the burner head 3 and the burner bottom 4 are connected and fixed;

the inner diameter of the lower part of the step connecting hole 67 is matched with the outer diameter of the upper end of the support column, and the upper end of the support column is inserted into the lower part of the step connecting hole to support the bottom of the combustor;

a support column mounting hole 41 is formed in the water tray 37, a support column mounting hole 43 is also formed in the upper surface of the burner support 5, and the lower end of the support column 40 penetrates through the support column mounting hole 41 in the water tray 37 and then extends into the support column mounting hole 43 in the upper surface of the burner support 5;

the burner support 5 has a support leg 42 fixed to a lower surface thereof, the support leg 42 having a lower end formed with a coupling hole (not shown), and a base plate (not shown) of a gas cooker or an integrated range product (not shown) having a coupling hole (not shown), the coupling holes being formed through coupling members (not shown) disposed in the coupling hole formed at the lower end of the support leg 42 and the coupling hole formed in the base plate. The connecting holes at the lower end of the supporting leg 42 and the connecting holes on the chassis can be threaded holes, and the connecting pieces can be screws.

The water tray 37 is provided with a first main fire nozzle holder through hole 44, a second main fire nozzle holder through hole 45 and a center fire nozzle holder through hole 46, the center fire nozzle holder 15 positioned on the upper surface of the burner support 5 passes through the center fire nozzle holder through hole 46, the first main fire nozzle holder 16 positioned on the upper surface of the burner support 5 passes through the first main fire nozzle holder through hole 44, and the second main fire nozzle holder 17 positioned on the upper surface of the burner support 5 passes through the second main fire nozzle holder through hole 45.

When the inlet end 61 of the central fire ejector 6, the inlet end 71 of the first main fire ejector 7 and the inlet end 81 of the second main fire ejector 8 are fixed to the lower surface of the burner bottom 4, the inlet end 71 of the first main fire ejector 7 and the inlet end 81 of the second main fire ejector 8 are arranged on two sides of the inlet end 61 of the central fire ejector 6.

The maximum inner diameter height of the outlet end of the first main fire ejector 7 and the maximum inner diameter height of the outlet end of the second main fire ejector 8 are both smaller than the height of the main fire middle mixing cavity 14, so that airflow sprayed from the outlet ends of the first main fire ejector 7 and the second main fire ejector 8 can completely enter the main fire middle mixing cavity 14.

The inlet end of the central fire ejector 6, the inlet end of the first main fire ejector 7 and the inlet end of the second main fire ejector 8 are provided with chamfers.

The inlet end 61 of the central fire ejector 6, the inlet end 71 of the first main fire ejector 7 and the inlet end 81 of the second main fire ejector 8 are all of a single-tube structure; when the inlet end 61 of the central fire ejector 6, the inlet end 71 of the first main fire ejector 7 and the inlet end 81 of the second main fire ejector 8 are of a single-tube structure, the inner diameters of the inlet end 61 of the central fire ejector 6 on different vertical sections are all equal, the inner diameters of the inlet end 71 of the first main fire ejector 7 on different vertical sections are all equal, and the inner diameters of the inlet end 81 of the second main fire ejector 8 on different vertical sections are all equal.

The central axis A of the outlet end of the central fire ejector 6 is superposed with the central axis B of the burner head 3; or the central axis a of the outlet end of the central fire injector 6 is located on one side of the central axis B of the burner head 3 far away from the end surface of the inlet end 61 of the central fire injector 6, that is, the central axis a of the outlet end of the central fire injector 6 and the end surface of the inlet end 61 of the central fire injector 6 are respectively located on two sides of the central axis B of the burner head 3, so as to facilitate the lengthening of the central fire injection pipe 6 to the maximum extent and improve the injection coefficient. In this embodiment, the central axis a of the outlet end of the central fire injector 6 and the end surface of the inlet end 61 of the central fire injector 6 are respectively located on both sides of the central axis B of the burner head 3.

The inlet end 61 of the central fire injector 6, the inlet end 71 of the first main fire injector 7 and the inlet end 81 of the second main fire injector 8 are all located on the same side of the lower surface of the burner base 4. The outer end face of the first main fire nozzle 26 and the outer end face of the second main fire nozzle 27 lie in the same vertical plane. The outer end face of the center fire nozzle 25 and the outer end face of the first main fire nozzle 26 are arranged in a staggered manner by 3mm or more in the front-rear direction.

The central fire nozzle 26 comprises an air-entraining section 47, a front threaded section 48 and a rear threaded section 49, the air-entraining section 47 is arranged between the front threaded section 48 and the rear threaded section 49, through holes (not shown in the figure) are formed in the center of the air-entraining section 47, the center of the front threaded section 48 and the center of the rear threaded section 49, the center through hole of the air-entraining section 47, the center through hole of the front threaded section 48 and the center through hole of the rear threaded section 49 are sequentially communicated, an air-entraining hole 50 communicated with the center through hole of the induction section 47 is formed in the periphery of the air-entraining section 47, and external threads are formed in the outer wall of the front threaded section 48; the first main fire nozzle 26 and the second main fire nozzle 27 are identical in structure to the center fire nozzle 25. The central fire nozzle 25 may be threadedly connected to the central fire nozzle holder 15 by means of a rear threaded section 49 of the central fire nozzle 25, the central fire nozzle holder 15 being provided with an internal thread (not shown) adapted to the external thread of the rear threaded section 49 of the central fire nozzle 25. The first main fire nozzle 26 may be threadedly connected to the first main fire nozzle carrier 16 by means of a rear threaded section of the first main fire nozzle 26, the first main fire nozzle carrier 16 being provided with internal threads (not shown) adapted to external threads of the rear threaded section of the first main fire nozzle 26. The second main fire nozzle 27 may be threadedly connected to the second main fire nozzle holder 17 by means of a rear threaded section of the second main fire nozzle 27, the second main fire nozzle holder 17 being provided with internal threads (not shown) adapted to external threads of the rear threaded section of the second main fire nozzle 27.

The air-entraining sections of the central fire nozzle 25, the first main fire nozzle 26 and the second main fire nozzle 27 can all be of an outer hexagonal nut structure.

The cover has central fire air door cover 51 on the central fire nozzle 25, the one end inner wall of central fire air door cover 51 is the smooth surface (not shown in the figure), the one end cover that central fire air door cover 51 inner wall is the smooth surface is on the bleed section 47 of central fire nozzle 25, the other end inner wall of central fire air door cover 51 is equipped with the internal thread (not shown in the figure) with the external screw thread adaptation of the preceding screw thread section 48 of central fire nozzle 25, the other end that central fire air door cover 51 was equipped with the internal thread revolves on the preceding screw thread section 48 of central fire nozzle 25. The outer wall of the central fire damper door sleeve 51 is stamped with outer lines, so that the central fire damper door sleeve 51 is not slipped during operation. By rotating the central fire damper cover 51, the overlapping area of the central fire damper cover 51 and the air inlet 50 at the periphery of the air guiding section 47 of the central fire nozzle 25 can be adjusted, so that the adjustment of the amount of air introduced into the air inlet 50 at the periphery of the air guiding section 47 of the central fire nozzle 25 is realized.

The central fire nozzle 25 can be sleeved with two central fire air door sleeves 51, for convenience of description, the first central fire air door sleeve and the second central fire air door sleeve are hereinafter referred to as a first central fire air door sleeve and a second central fire air door sleeve, one end, with the inner wall being a smooth surface, of the first central fire air door sleeve is sleeved on the air entraining section 47 of the central fire nozzle 25, and the other end, provided with internal threads, of the first central fire air door sleeve is screwed on the front thread section 48 of the central fire nozzle 25; one end of the second central fire air door sleeve provided with the internal thread is also screwed on the front thread section 48 of the central fire nozzle 25, the second central fire air door sleeve is positioned in front of the first central fire air door sleeve, and the outer end surface of the second central fire air door sleeve extends out of the outer end surface of the central fire nozzle 25; under the action of the first central fire air door sleeve, the air quantity introduced by the air introducing holes 50 in the periphery of the air introducing section 47 of the central fire nozzle 25 can be adjusted, and under the action of the second central fire air door sleeve, the distance between the outer end face of the second central fire air door sleeve and the end face of the inlet end 61 of the central fire ejector 6 can be adjusted, so that the air quantity between the central fire nozzle 25 and the inlet end 61 of the central fire ejector 6 can be adjusted.

The first main fire nozzle 26 is sleeved with a first main fire air door sleeve 52, the second main fire nozzle 27 is sleeved with a second main fire air door sleeve 53, and the structures of the first main fire air door sleeve 52 and the second main fire air door sleeve 53 are the same as the structure of the central fire air door sleeve 51. Two first main fire damper sleeves 52 can also be sleeved on the first main fire nozzle 26; two second main fire damper sleeves 53 may also be sleeved on the second main fire nozzle 27. The number of the air door sleeves on each nozzle can be set according to actual conditions.

A fixing frame through hole 54 is formed in the water tray 37, a fixing frame through hole 55 is also formed in the flange plate 38 of the combustor bottom 4, a fixing frame through hole (not shown) is formed in the middle partition plate 28 of the combustor head 3, and the ignition needle thermocouple fixing frame 20 sequentially penetrates through the fixing frame through hole 54 in the water tray 37, the fixing frame through hole 55 in the flange plate 38 of the combustor bottom 4 and the fixing frame through hole in the middle partition plate 28 of the combustor head 3, so that the circumferential positions of the water tray 37, the combustor bottom 4 and the combustor head 3 can be conveniently located. The upper surface of the burner support 5 is provided with a groove 57, the groove 57 on the upper surface of the burner support 5 is provided with an ignition needle through-hole 58 and a thermocouple through-hole 59, the upper end of the ignition needle 24 upwards passes through the ignition needle through-hole 58 and the lower end of the ignition needle 24 is arranged below the ignition needle through-hole 58, the upper end of the thermocouple 23 upwards passes through the thermocouple through-hole 59 and the lower end of the thermocouple 23 is arranged below the thermocouple through-hole 59, the periphery of the ignition needle 24 and the periphery of the thermocouple 23 are both sleeved with split retainer rings 60 (the split retainer rings can also be replaced by fixing flanges), the two split retainer rings 60 are respectively arranged on the ignition needle through-hole 58 and the thermocouple through-hole 59, the split retainer ring 60 on the periphery of the ignition needle 24 is pressed into the groove 57 on the upper surface of the burner support 5 from the upper end of the ignition needle 24 to the lower end and is arranged on the ignition needle through-hole 58, the split retainer ring 60 on the periphery of the, so as to fix the positions of the ignition needle 24 and the thermocouple 23; the ignition needle thermocouple fixing frame 20 is sleeved on the ignition needle 24 and the thermocouple 23 through an ignition needle mounting hole 22 and a thermocouple mounting hole 21 of the ignition needle thermocouple fixing frame 20 (when in specific installation, the ignition needle mounting hole 22 is aligned with the ignition needle 24, the thermocouple mounting hole 21 is aligned with the thermocouple 23), the upper end of the ignition needle 24 extends into a space between the outer ring fire inner wall 31 and the central fire outer wall 32, the upper end of the thermocouple 23 extends into a space between the outer ring fire inner wall 31 and the central fire outer wall 32, the lower end of the ignition needle thermocouple fixing frame 20 is arranged in a groove 57 on the upper surface of the combustor support 5, the lower end of the ignition needle thermocouple fixing frame 20 is fixed in the groove 57 on the upper surface of the combustor support 5 through a fixing screw 64, and the upper end of the ignition needle thermocouple fixing frame 20 sequentially penetrates through a fixing frame through-inserting hole 54 on the water tray 37, The fixing frame on the middle clapboard 28 of the burner head 3 penetrates through the insertion hole to realize the positioning of the circumferential positions of the water tray 37, the burner bottom 4 and the burner head 3; when the ignition needle 24 and the thermocouple 23 need to be taken out in after-sales maintenance, the central ignition cover 1, the outer ring ignition cover 2, the burner head 3 and the burner bottom 4 are removed, the water disc 37 is taken down, the fixing screw 64 is loosened, the ignition needle thermocouple fixing frame 20, the thermocouple 23 and the ignition needle 24 can be taken out together, the burner support 5 does not need to be detached, the ignition needle 24 and the thermocouple 23 can be conveniently taken out, and time saving and safety are achieved.

The combustor support 5 is also provided with a wire passage 62 and a support center strip hole 63, the ignition needle through hole 58 and the thermocouple through hole 59 are both communicated with one end of the wire passage 62, and the other end of the wire passage 62 is communicated with the support center strip hole 63. The ignition needle 24 and the thermocouple 23 are connected with a wire plug (not shown) through a wire (not shown) (the wire plugs of the ignition needle 24 and the thermocouple 23 are mature parts of the existing burner and are not described in detail herein), and the sectional area of the central strip hole 63 of the support is larger than that of the wire plug. Because the wire plug is too large to pass through the ignition needle insertion hole 58 and the thermocouple insertion hole 59, when the ignition needle 24 and the thermocouple 23 are installed on the burner, the wire plug can pass through the support center strip hole 63, and then the wire can pass through the wire passage 62, so that the wire and the wire plug can be connected with a (not shown) after being moved onto the burner support 5. An igniter (not shown in the figure) of the gas cooker or the integrated cooker product (not shown in the figure) is connected with a solenoid valve (not shown in the figure), the igniter is used for igniting the ignition needle, and the solenoid valve is used for electrifying the thermocouple.

When the burner support 5 works, the central fire air inlet end 18 and the main fire air inlet end 19 on the lower surface of the burner support 5 are externally connected with a gas pipeline (not shown in the figure), gas enters the central fire air inlet end 18 and the main fire air inlet end 19 through the gas pipeline, the gas entering the central fire air inlet end 18 is sprayed out from the central fire nozzle 25 of the central fire nozzle seat 15, and the gas entering the main fire air inlet end 19 is sprayed out from the first main fire nozzle 26 of the first main fire nozzle seat 16 and the second main fire nozzle 27 of the second main fire nozzle seat 17. The air near the inlet end 71 of the first main fire injector 7, the inlet end 81 of the second main fire injector 8 and the inlet end 61 of the central fire injector 6 is called primary air, and the fuel gas ejected from the central fire nozzle 25, the first main fire nozzle 26 and the second main fire nozzle 27 is mixed with the primary air, enters the first main fire injector 7, the second main fire injector 8 and the central fire injector 6 through the inlet end of the first main fire injector 7, the inlet end of the second main fire injector 8 and the inlet end of the central fire injector 6, and is ejected from the outlet end of the first main fire injector 7, the outlet end of the second main fire injector 8 and the outlet end of the central fire injector 6. The mixed airflow of the primary air and the fuel gas coming out from the outlet end of the first main fire ejector 7 and the mixed airflow of the primary air and the fuel gas coming out from the outlet end of the second main fire ejector 8 are mixed in a main fire middle mixing cavity 14, then enter an outer ring fire distribution cavity 9 through a gas distribution channel 13, and finally are sprayed out of an outer ring fire outlet hole 12 of the outer ring fire cover 2 for combustion. The mixed airflow of the primary air and the fuel gas from the outlet end of the central fire ejector 6 enters the central fire mixing cavity 10 and is finally sprayed out from the central fire outlet hole 11 of the central fire cover 1 for combustion. After the mixed air flow is sprayed out from the outer ring fire outlet holes 12 and the central fire outlet holes 11 of the outer ring fire cover 2, combustion promoting air required by combustion is called secondary air, and the secondary air mainly comprises air on the periphery of the central fire cover 1 and air in the combustion promoting air cavity 34.

The central fire nozzle 25 on the central fire nozzle seat 15 is coaxial with the inlet end 61 of the central fire ejector 6, a gap exists between the end surface of the central fire nozzle 25 of the central fire nozzle seat 15 and the end surface of the inlet end 61 of the central fire ejector 6, the first main fire nozzle 26 of the first main fire nozzle seat 16 is coaxial with the inlet end 71 of the first main fire ejector 7, a gap exists between the end surface of the first main fire nozzle 26 of the first main fire nozzle seat 16 and the end surface of the inlet end 71 of the first main fire ejector 7, the second main fire nozzle 27 of the second main fire nozzle seat 17 is coaxial with the inlet end 81 of the second main fire ejector 8, and a gap exists between the end surface of the second main fire nozzle seat 17 and the end surface of the inlet end 81 of the second main fire ejector 8, so that primary air can be ejected into the central fire ejector 6, the first main fire ejector 7 and the second main fire ejector 8.

The two parts can be fixedly connected through manufacturing into a whole or through the existing mature modes such as tight fit, screws, welding and the like.

After the installation, the outer edge of the water tray 37 is pressed on the panel of the gas cooker (or integrated cooker product), the back of the burner support 5 is positioned below the panel of the gas cooker (or integrated cooker product), and the support legs 42 on the lower surface of the burner support 5 are connected with the connecting holes (not shown) on the chassis (not shown) of the gas cooker (or integrated cooker product) through connecting pieces (not shown). Primary air and secondary air all get into the combustor from the water tray top, and gas cooking utensils or integrated kitchen product panel below need not into the air, have realized going up the air inlet completely, do not have special requirement to the installation condition, and the cupboard cabinet door need not to set up the ventilation hole when being applied to ordinary gas-cooker, also need not to set up when being applied to integrated kitchen and act as go-between and operate the mechanism, and application scope is wider, and operational reliability is high.

Example 2:

this example differs from example 1 in that:

referring to fig. 14-16, the top air inlet burner further comprises an anti-dry heating probe 65, wherein the head of the anti-dry heating probe 65 extends out of the upper surface of the central fire cover 1 after sequentially passing through the burner support 5, the flange 38 of the burner bottom 4 and the middle partition 28 of the burner head 3. At this time, the burner support 5, the flange 38 of the burner bottom 4, the middle partition 28 of the burner head 3 and the central fire cover 1 are all provided with dry-burning-proof probe insertion holes (not shown in the figure).

The inlet end 61 of the central fire injector 6 is located on one side of the lower surface of the burner base 4, and the inlet ends 71, 81 of the first and second main fire injectors 7, 8 are located on the other side of the lower surface of the burner base 4.

The inlet end 61 of the central fire ejector 6, the inlet end 71 of the first main fire ejector 7 and the inlet end 81 of the second main fire ejector 8 can be of the same double-pipe structure, and the double-pipe structure can be called as a Venturi pipe structure, so that the process is simplified, and the stability of products is improved. When the inlet end 61 of the central fire ejector 6 is of a double-tube structure, the inlet end 61 of the central fire ejector 6 comprises an ejector inner tube 72 and an ejector outer tube 73, the ejector inner tube is sleeved in the ejector outer tube, the inner diameter of the ejector inner tube is gradually reduced from the tail end of the ejector inner tube to the head end of the ejector inner tube, the head end of the ejector inner tube is close to the outer end face of the inlet end 61 of the central fire ejector 6, and the outer end face of the inlet end 61 of the central fire ejector 6 is the outer end face of the ejector outer tube.

Claims (10)

1. The completely upper air inlet burner with the middle-arranged mixing cavity is characterized in that a central fire cover, an outer ring fire cover, a burner head, a burner bottom, a burner support, a central fire ejector, a first main fire ejector and a second main fire ejector are arranged in the burner head, an outer ring fire sub-cavity and a central fire mixing cavity are arranged in the burner head, a central fire outlet hole is formed in the central fire cover, the central fire cover covers the central fire mixing cavity, an outer ring fire outlet hole is formed in the outer ring fire cover, the outer ring fire cover covers the outer ring fire sub-cavity, an air distribution channel is further arranged in the burner head, the upper end of the air distribution channel is communicated with the outer ring fire sub-cavity, the middle-arranged main fire mixing cavity is arranged in the burner bottom, the lower end of the air distribution channel is communicated with the middle-arranged main fire mixing cavity, and the inlet end of the central fire ejector, the inlet end of the first main fire ejector and the inlet end of the second main fire ejector are all fixed on the lower surface, the outlet end of the central fire ejector penetrates through the main fire middle-arranged mixing cavity and then is communicated with the central fire mixing cavity, the outlet end of the first main fire ejector and the outlet end of the second main fire ejector are directly communicated with the main fire middle-arranged mixing cavity, the upper surface of the combustor support is fixedly provided with a central fire nozzle seat, a first main fire nozzle seat and a second main fire nozzle seat, the lower surface of the combustor support is fixedly provided with a central fire air inlet end and a main fire air inlet end, the central fire air inlet end is communicated with the central fire nozzle seat, the first main fire nozzle seat and the second main fire nozzle seat are both communicated with the main fire air inlet end, the combustor support is provided with an ignition needle thermocouple fixing frame, the ignition needle thermocouple fixing frame is provided with a thermocouple mounting hole and an ignition needle mounting hole, the thermocouple is arranged in the thermocouple mounting hole, and the ignition needle is arranged in the ignition needle mounting hole; the central fire nozzle is mounted on the central fire nozzle seat, the central fire nozzle on the central fire nozzle seat is coaxial with the inlet end of the central fire ejector, a gap exists between the end face of the central fire nozzle seat and the end face of the inlet end of the central fire ejector, a first main fire nozzle is mounted on the first main fire nozzle seat, the first main fire nozzle of the first main fire nozzle seat is coaxial with the inlet end of the first main fire ejector, a gap exists between the end face of the first main fire nozzle seat and the end face of the inlet end of the first main fire ejector, a second main fire nozzle is mounted on the second main fire nozzle seat, the second main fire nozzle of the second main fire nozzle seat is coaxial with the inlet end of the second main fire ejector, and a gap exists between the end face of the second main fire nozzle seat and the end face of the inlet end of the second main fire ejector.

2. The mid-top full upper intake air burner of the mixing chamber of claim 1, wherein the burner head comprises a middle partition, an outer ring fire bottom plate, an outer ring fire outer wall, an outer ring fire inner wall, and a center fire outer wall, the outer ring fire inner wall, and the center fire outer wall being coaxially disposed on the middle partition, the outer ring fire inner wall being disposed at an outer periphery of the center fire outer wall, the outer ring fire outer wall being disposed at an outer periphery of the outer ring fire inner wall; the lower edge of the outer ring fire outer wall, the lower edge of the outer ring fire inner wall and the lower edge of the central fire outer wall are fixedly connected with the upper surface of the middle partition plate, the outer ring fire bottom plate is arranged between the outer ring fire outer wall and the outer ring fire inner wall and positioned above the middle partition plate, the outer edge of the outer ring fire bottom plate is fixedly connected with the outer ring fire outer wall, the inner edge of the outer ring fire bottom plate is fixedly connected with the outer ring fire inner wall, the gas distribution channel longitudinally penetrates through the outer ring fire bottom plate and the middle partition plate, the side wall of the gas distribution channel is a vertical partition plate arranged between the middle partition plate and the outer ring fire bottom plate, the upper edge of the vertical partition plate is fixedly connected with the outer ring fire bottom plate, the lower edge of the vertical partition plate is fixedly connected; a cavity defined by the upper surface of the outer ring fire bottom plate, the inner surface of the outer ring fire outer wall and the outer surface of the outer ring fire inner wall is an outer ring fire distributing cavity, and a cavity defined by the inner surface of the center fire outer wall is a center fire mixing cavity;

the number of the gas distribution channels is more than two;

the cavity formed by the lower surface of the outer ring fire bottom plate, the upper surface of the middle partition plate and the opposite surfaces of the two vertical partition plates is a combustion promoting air cavity, and vent holes communicated with the combustion promoting air cavity are formed in the outer ring fire outer wall and the outer ring fire inner wall, so that air outside the vent holes in the outer ring fire outer wall can enter the cavity formed by the inner surface of the outer ring fire inner wall and the outer surface of the middle fire outer wall through the vent holes in the outer ring fire outer wall, the combustion promoting air cavity and the vent holes in the outer ring fire inner wall;

a water tray is arranged between the bottom of the burner and the burner support;

the bottom of the burner comprises a flange plate, the upper surface of the flange plate is provided with a groove, and the groove on the upper surface of the flange plate is a main fire middle mixing cavity; the inlet end of the central fire ejector, the inlet end of the first main fire ejector and the inlet end of the second main fire ejector are fixed on the lower surface of the flange plate.

3. The mid-top full upper intake air burner of the mixing chamber according to claim 1, wherein projections of the first main fire nozzle, the second main fire nozzle, the central fire nozzle, the inlet end of the central fire injector, the inlet end of the first main fire injector and the inlet end of the second main fire injector on a plane where the intermediate partition plate is located are located in an outer edge of the intermediate partition plate.

4. The mid-set full upwind burner of claim 2,

the lower surface of a flange plate at the bottom of the burner is fixed with more than 2 fixing columns, the upper surfaces of the fixing columns are fixedly connected with the lower surface of the flange plate, the centers of the fixing columns are provided with through holes, the flange plate is provided with through holes longitudinally penetrating through the flange plate, the central through holes of the fixing columns are coaxial with and mutually communicated with the through holes on the flange plate, the central through holes of the fixing columns and the through holes on the flange plate jointly form step connecting holes, the sectional area of the upper parts of the step connecting holes and the sectional area of the lower parts of the step connecting holes are larger than the sectional area of the middle parts; a cylinder is fixed on the lower surface of a middle clapboard at the head part of the burner, the upper surface of the cylinder is fixedly connected with the lower surface of the middle clapboard, the cylinder on the lower surface of the middle clapboard is sleeved on the upper part of the step connecting hole, and the lower end of the cylinder on the lower surface of the middle clapboard is provided with a connecting hole; the fastener sequentially penetrates through the lower part of the step connecting hole and the middle part of the step connecting hole from bottom to top and extends into the cylindrical connecting hole on the lower surface of the middle partition plate, so that the head part and the bottom part of the combustor are connected and fixed;

the inner diameter of the lower part of the step connecting hole is matched with the outer diameter of the upper end of the supporting column, and the upper end of the supporting column is inserted into the lower part of the step connecting hole;

a support column mounting hole is formed in the water tray, a support column mounting hole is also formed in the upper surface of the burner support, and the lower end of the support column penetrates through the support column mounting hole in the water tray and then extends into the support column mounting hole in the upper surface of the burner support;

the lower surface of the combustor support is fixed with a support leg, the lower end of the support leg is provided with a connecting hole, the chassis of the gas cooker or the integrated cooker product is also provided with a connecting hole, and the connection is realized through a connecting piece arranged in the connecting hole at the lower end of the support leg and the connecting hole on the chassis.

5. The mid-mounted full upwind burner of claim 2, wherein the water tray is provided with a first main burner nozzle holder through-hole, a second main burner nozzle holder through-hole and a center burner nozzle holder through-hole, the center burner nozzle holder on the upper surface of the burner support passes through the center burner nozzle holder through-hole, the first main burner nozzle holder on the upper surface of the burner support passes through the first main burner nozzle holder through-hole, and the second main burner nozzle holder on the upper surface of the burner support passes through the second main burner nozzle holder through-hole.

6. The top air intake burner disposed in the mixing chamber according to claim 2, further comprising a dry-burning prevention probe, wherein a head of the dry-burning prevention probe sequentially penetrates through the burner support, the flange at the bottom of the burner, and the middle partition plate at the head of the burner and then extends out of the upper surface of the central fire cover; anti-dry heating probe through holes are formed in the burner support, the flange plate at the bottom of the burner, the middle partition plate at the head of the burner and the central fire cover;

the thickness of the intermediate partition plate gradually decreases from the central axis of the intermediate partition plate to the outer edge of the intermediate partition plate.

7. The mid-top full upper intake burner of a mixing chamber according to claim 1 or 2, wherein the central axis of the outlet end of the central fire injector coincides with the central axis of the burner head; or the central axis of the outlet end of the central fire injector is positioned on one side of the central axis of the burner head, which is far away from the end face of the inlet end of the central fire injector, namely, the central axis of the outlet end of the central fire injector and the end face of the inlet end of the central fire injector are respectively positioned on two sides of the central axis of the burner head;

the inlet end of the central fire ejector, the inlet end of the first main fire ejector and the inlet end of the second main fire ejector are all positioned on the same side of the lower surface of the bottom of the combustor; or the inlet end of the central fire ejector is positioned on one side of the lower surface of the bottom of the combustor, and the inlet end of the first main fire ejector and the inlet end of the second main fire ejector are both positioned on the other side of the lower surface of the bottom of the combustor; the outer end face of the first main fire nozzle and the outer end face of the second main fire nozzle are positioned on the same vertical plane; when the inlet end of the central fire ejector, the inlet end of the first main fire ejector and the inlet end of the second main fire ejector are located on the same side of the lower surface of the bottom of the combustor, the outer end face of the central fire nozzle and the outer end face of the first main fire nozzle are staggered back and forth by more than 3 mm.

8. The top-air-intake burner arranged in the mixing cavity according to claim 1 or 2, wherein the central fire nozzle comprises an air-entraining section, a front thread section and a rear thread section, the air-entraining section is arranged between the front thread section and the rear thread section, through holes are formed in the center of the air-entraining section, the center of the front thread section and the center of the rear thread section, the center through hole of the air-entraining section, the center through hole of the front thread section and the center through hole of the rear thread section are sequentially communicated, an air-entraining hole communicated with the center through hole of the induction section is formed in the periphery of the air-entraining section, and external threads are formed in the outer wall of the front thread section and the outer wall; the first main fire nozzle and the second main fire nozzle are the same as the central fire nozzle in structure; the central fire nozzle is in threaded connection with the central fire nozzle base through a rear threaded section of the central fire nozzle, and the central fire nozzle base is provided with an internal thread matched with an external thread of the rear threaded section of the central fire nozzle; the first main fire nozzle is in threaded connection with the first main fire nozzle seat through a rear threaded section of the first main fire nozzle, and the first main fire nozzle seat is provided with an internal thread matched with an external thread of the rear threaded section of the first main fire nozzle; the second main fire nozzle is in threaded connection with a second main fire nozzle seat through a rear threaded section of the second main fire nozzle, and the second main fire nozzle seat is provided with an internal thread matched with an external thread of the rear threaded section of the second main fire nozzle;

the central fire nozzle is sleeved with a central fire air door sleeve, one end of the central fire air door sleeve is a smooth surface, one end of the inner wall of the central fire air door sleeve, which is the smooth surface, is sleeved on the air entraining section of the central fire nozzle, the inner wall of the other end of the central fire air door sleeve is provided with an internal thread matched with the external thread of the front thread section of the central fire nozzle, and the other end of the central fire air door sleeve, which is provided with the internal thread, is screwed on the front thread section of the central fire nozzle; the outer wall of the central fire air door sleeve is stamped with outer grains; the first main fire nozzle is sleeved with a first main fire air door sleeve, the second main fire nozzle is sleeved with a second main fire air door sleeve, and the structures of the first main fire air door sleeve and the second main fire air door sleeve are the same as the structure of the central fire air door sleeve.

9. The mid-placed complete upper air intake burner of the mixing chamber according to claim 2, wherein the water pan is provided with a fixing frame through hole, the flange plate at the bottom of the burner is also provided with a fixing frame through hole, the middle partition plate at the head of the burner is provided with a fixing frame through hole, the ignition needle thermocouple fixing frame sequentially passes through the fixing frame through hole on the water pan, the fixing frame through hole on the flange plate at the bottom of the burner and the fixing frame through hole on the middle partition plate at the head of the burner;

the upper surface of the combustor support is provided with a groove, the groove on the upper surface of the combustor support is internally provided with an ignition needle through hole and a thermocouple through hole, the upper end of an ignition needle upwards penetrates through the ignition needle through hole and the lower end of the ignition needle is arranged below the ignition needle through hole, the upper end of a thermocouple upwards penetrates through the thermocouple through hole and the lower end of the thermocouple is arranged below the thermocouple through hole, the periphery of the ignition needle and the periphery of the thermocouple are both sleeved with an opening check ring or a fixing flange, the two opening check rings or the fixing flanges are respectively positioned on the ignition needle through hole and the thermocouple through hole, the opening check ring or the fixing flange on the periphery of the ignition needle is pressed into the groove on the upper surface of the combustor support from top to bottom and is positioned on the ignition needle through hole, and the opening check ring or the fixing flange on the periphery of the thermocouple is pressed into the groove on the upper; ignition needle thermocouple mount is overlapped on ignition needle and thermocouple through the ignition needle mounting hole and the thermocouple mounting hole of ignition needle thermocouple mount, the ignition needle upper end stretches into between outer ring fire inner wall and the central fire outer wall, the thermocouple upper end stretches into between outer ring fire inner wall and the central fire outer wall, the recess of combustor support upper surface is arranged in to the lower extreme of ignition needle thermocouple mount, the lower extreme of ignition needle thermocouple mount is fixed in the recess of combustor support upper surface through set screw, supreme mount interlude hole on passing the water tray in proper order is followed to the upper end of ignition needle thermocouple mount, the mount interlude hole on the ring flange of combustor bottom, the mount interlude hole on the intermediate bottom plate of combustor head.

10. The mid-mix, full upper inlet air burner of claim 9, wherein the maximum internal diameter height of the outlet end of the first main fire ejector and the maximum internal diameter height of the outlet end of the second main fire ejector are both less than the height of the mid-mix main fire chamber;

the combustor support is also provided with a wire passing channel and a support center strip hole, the ignition needle through jack and the thermocouple through jack are both communicated with one end of the wire passing channel, and the other end of the wire passing channel is communicated with the support center strip hole.

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