A gas-fired lifting and rotating bread oven

Abstract

This invention relates to the field of bread baking technology, specifically to a gas-fired lifting and rotating bread baking machine. It includes a crossbeam above a base, a lifting and rotating support structure on the base for driving the crossbeam up and down and horizontally, and a linear displacement drive structure on the base for driving the lifting and rotating support structure horizontally. One end of the crossbeam has two or more burner structures, with an insulation cover on the outside of each burner structure. Air supply ducts and gas supply ducts are connected to the burner structures, and a heat storage component is installed on the air supply duct structure. The lifting drive structure drives the jet column to rise and fall within the gas chamber, and the air jet column to rise and fall within the air chamber, upgrading the traditional single downward flame spray to a combined lateral and downward flame spray mode. This allows for adjustment of the flame spray range, flexibly adjusting according to the bread depth to meet the heating needs of different sizes.

Description

Technical Field

[0001] This invention relates to the field of baking oven technology, specifically to a gas-fired lifting and rotating baking oven. Background Technology

[0002] Currently, the main types of ladle baking equipment commonly used by steel and foundry enterprises both domestically and internationally are sleeve-type and metal self-preheating type. Their main problems are: high energy consumption, long baking time, poor baking quality, and high exhaust gas temperature. For typical ladle baking equipment, exhaust gas heat loss accounts for 50% to 80% of the total heat of fuel combustion. Therefore, the best way to improve the thermal efficiency of ladle baking equipment is to minimize its exhaust gas temperature.

[0003] A rotatable bread oven with a lifting mechanism is disclosed in CN214867214U. To address the problem of inconvenient rotation and lifting adjustment of the bread oven, the following solution is proposed: it includes a support column and a support plate slidably connected to one side inner wall of the support column. A cover plate is fixed to one side wall of the support plate, and a nozzle is connected to one side wall of the cover plate. A support base is fixed to the bottom side wall of the support column, and a placement plate is installed on one side wall of the support column.

[0004] The regenerative natural gas ladle baking device with publication number CN120394842A includes a ladle heating furnace and a ladle baking cover. The front end of the ladle heating furnace and the ladle baking cover are fixedly connected. Reinforcing rods are fixedly installed on both the left and right ends of the ladle baking cover. An installation frame is provided at the rear end of the ladle heating furnace. A hydraulic lifting platform is provided at the lower end of the ladle heating furnace. Two installation frames are provided on the left and right sides of the ladle heating furnace.

[0005] Currently, although some bread ovens have attempted to solve the problems of rotation and height adjustment, or adopted a heat storage design, they still have shortcomings in the coordinated optimization of the flame position adjustment range, combustion uniformity, and waste heat recovery efficiency, making it difficult to meet the high-efficiency heating needs of breads of different sizes. Summary of the Invention

[0006] (a) Technical problems to be solved

[0007] The purpose of this invention is to provide a gas-fired lifting and rotating bread oven in order to solve the above-mentioned problems.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the present invention provides the following technical solution:

[0010] The present invention provides a gas-fired lifting and rotating bread oven, comprising a crossbeam above a base, a lifting and rotating support structure for lifting and lowering the crossbeam and driving it to rotate horizontally on the base, and a linear displacement drive structure for driving the lifting and rotating support structure to rotate horizontally on the base.

[0011] One end of the crossbeam is provided with two or more burner structures, the outside of the burner structure is provided with a heat insulation cover, and the burner structure is respectively connected to an air supply duct structure and an air supply duct structure, and the air supply duct structure is provided with a heat storage component.

[0012] The burner structure includes a burner shell, inside which are respectively an air chamber and a wind chamber. An air jet column is vertically mounted in the air chamber, and an air jet column is vertically mounted in the wind chamber. A main connector is provided between the upper ends of the air jet column and the air jet column. The main connector is fixedly mounted on a crossbeam. The heat insulation cover is provided with a lifting drive structure for driving the air jet column and the air jet column to move up and down within the burner shell to adjust the vertical range of the flame.

[0013] Furthermore, the outer side of the burner shell is provided with six or more groups of jet heads evenly distributed around its axis. Each group includes several jet heads evenly distributed along the axial direction of the burner shell. The jet heads are connected to the gas chambers. When the jet column is driven up and down by the lifting drive structure, the outer wall of the jet column can seal the jet heads. The jet direction of the jet head is tangent to the outer circumferential direction of the gas chamber.

[0014] Furthermore, the air chamber is provided with six or more air chambers evenly distributed around the air chamber. The outer wall of the burner shell is provided with air spray slots that correspond one-to-one with the air chambers and enable the air chambers to communicate with the outside. When the air spray column is driven up and down by the lifting drive structure, the outer wall of the air spray column can seal the air spray slots in contact. The air spray slots correspond one-to-one with the air jet head, and the air outlet direction of the corresponding air spray slot is consistent with the air outlet direction of the air jet head. The main connector is provided with annular air chambers that communicate with each air spray column. The annular air chambers are connected to the air supply duct structure.

[0015] Furthermore, the lifting and rotating support structure includes a base, in which a first motor is fixedly installed. A lower support cylinder is fixedly installed on the upper side of the base, and an upper lifting column is rotatably and slidably installed inside the upper end of the lower support cylinder. The upper end of the upper lifting column is fixedly connected to the crossbeam via a support block. A hydraulic cylinder is fixedly connected to the output shaft end of the first motor. An embedding hole for nesting the hydraulic cylinder is opened inside the upper lifting column, and the push rod head end of the hydraulic cylinder is fixedly connected to the inner top surface of the embedding hole.

[0016] Furthermore, the linear displacement drive structure includes a first electric telescopic rod, which is fixedly mounted on the base via a fixed seat. The push rod head of the first electric telescopic rod is fixedly connected to the base. The bottom side of the base is provided with a support wheel for rolling contact with the upper surface of the base. Two or more guide rods are symmetrically distributed on both sides of the first electric telescopic rod. The outer side of the base is fixedly provided with lugs corresponding to the guide rods. The lugs are provided with guide holes for sliding through the guide rods. The two ends of the guide rods are fixedly mounted on the base via support frames.

[0017] Furthermore, the lifting drive structure includes a lifting seat that slides up and down inside the heat insulation cover, the upper end of the burner shell is fixedly mounted on the lifting seat, and a second electric telescopic rod is fixedly mounted on the heat insulation cover. The push rod head of the second electric telescopic rod extends into the heat insulation cover and is fixedly connected to the upper surface of the lifting seat.

[0018] Furthermore, the lower outer side of the heat insulation cover is provided with a gas collecting ring, and the inner side of the gas collecting ring is provided with an inner filter screen sleeve.

[0019] Furthermore, the burner structure is provided in two parts, and the air supply pipe structure includes a second air supply pipe corresponding to the burner structure. One end of the second air supply pipe is connected to the upper end of the corresponding jet column. The other ends of the two second air supply pipes are connected to one end of the first air supply pipe. The other ends of the two first air supply pipes are connected to each other by an air inlet pipe. A second electromagnetic three-way valve is provided between the first air supply pipe and the air inlet pipe.

[0020] Furthermore, the air supply duct structure includes a first air supply pipe corresponding to the burner structure. One end of the first air supply pipe is connected to the corresponding annular air chamber. The other ends of the two first air supply pipes are connected to one end of a second air supply pipe. A fan is provided at the other end of the second air supply pipe. A first electromagnetic three-way valve is provided at the connection between the first air supply pipe and the second air supply pipe.

[0021] Furthermore, the heat storage assembly includes two heat storage boxes, which are fixedly mounted on the crossbeam by a support plate on the bottom side. The air outlets of the two heat storage boxes are respectively connected to one end of a heat storage exhaust pipe, and the other ends of the two heat storage exhaust pipes are connected to a heat storage extraction pipe. A third electromagnetic three-way valve is provided at the connection between the heat storage exhaust pipe and the heat storage extraction pipe. The heat storage extraction pipe is connected to the air inlet of the fan. The air inlet of the heat storage box is connected to one end of a heat storage air inlet pipe, and the other end of the heat storage air inlet pipe is connected to the air collecting ring and communicates with the inside of the insulation cover.

[0022] (III) Beneficial Effects

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] 1. By using a lifting drive structure to drive the jet column to rise and fall within the air chamber, and the air jet column to rise and fall within the air chamber, the traditional single downward flame spray is upgraded to a mode that combines lateral circumferential and downward flame spray. This allows for adjustment of the flame spray range, which can be flexibly adjusted according to the depth of the package to adapt to the heating requirements of different specifications.

[0025] 2. The lifting and rotating support structure allows for adjustment of the vertical height of the crossbeam and burner structure, as well as the horizontal angle of the burner structure, facilitating adjustment of the flame position according to the placement of the package.

[0026] 3. The lifting and rotating support structure works in conjunction with the linear displacement drive structure to realize the up-and-down lifting, horizontal rotation and horizontal linear movement of the burner structure. It can be adapted to packages of different sizes and placement positions, and even perform large-scale mobile heating of ultra-large containers.

[0027] 4. The heat storage component recovers the waste heat of the high-temperature flue gas generated by combustion through two heat storage boxes. After filtration, the waste heat is sent back into the air supply duct by the fan to participate in combustion, which greatly reduces the heat loss of the flue gas, realizes the recycling of heat, reduces energy consumption, the heat insulation cover reduces heat loss, and the gas collection ring and inner filter screen improve the waste heat collection efficiency and gas cleanliness. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0030] Figure 2 This is the present invention. Figure 1 A schematic diagram of the right-side view structure;

[0031] Figure 3 This is the present invention. Figure 1 A schematic diagram of the three-dimensional structure in the first direction;

[0032] Figure 4 This is the present invention. Figure 2 A schematic diagram of the AA cross-sectional structure;

[0033] Figure 5 This is the present invention. Figure 1 A schematic diagram of the second-direction three-dimensional structure;

[0034] Figure 6 This is a schematic diagram of the axial cross-sectional structure of the burner structure of the present invention;

[0035] Figure 7 This is the present invention. Figure 6 A magnified schematic diagram of the structure at point B;

[0036] Figure 8 This is a schematic diagram of the cross-sectional structure of the burner structure of the present invention.

[0037] The reference numerals in the attached drawings are explained as follows: 1. Base; 2. Lifting and rotating support structure; 201. Seat; 202. Lower support cylinder; 203. Upper lifting column; 204. Support block; 205. Hydraulic cylinder; 206. First motor; 3. Crossbeam; 4. Linear displacement drive structure; 401. Support frame; 402. Guide rod; 403. First electric telescopic rod; 404. Fixed seat; 405. Support lug; 406. Support wheel; 5. Lifting drive structure; 501. Second electric telescopic rod; 502. Lifting seat; 6. Burner structure; 601. Main connector; 602. Annular air chamber; 603. Jet column; 604. Air jet column; 605. Burner shell; 606. Air chamber; 607. Wind. 608. Air chamber; 609. Air jet head; 7. Air supply duct structure; 701. First air supply duct; 702. First electromagnetic three-way valve; 703. Fan; 704. Second air supply duct; 8. Air supply duct structure; 801. First ventilation duct; 802. Second ventilation duct; 803. Solenoid valve; 804. Second electromagnetic three-way valve; 805. Air inlet pipe; 9. Heat storage component; 901. Heat storage box; 902. Heat storage exhaust duct; 903. Heat storage extraction duct; 904. Third electromagnetic three-way valve; 905. Heat storage air inlet duct; 906. Support plate; 10. Insulation cover; 1001. Air collection ring; 1002. Inner filter screen sleeve; 11. Digital display control panel. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0039] See Figures 1-8As shown, the present invention provides a gas-fired lifting and rotating bread oven, including a crossbeam 3 above a base 1, a lifting and rotating support structure 2 on the base 1 for lifting and lowering the crossbeam 3 and driving it to rotate horizontally, and a linear displacement drive structure 4 on the base 1 for driving the lifting and rotating support structure 2 horizontally; one end of the crossbeam 3 is provided with two or more burner structures 6, the outside of the burner structure 6 is provided with a heat insulation cover 10, and the burner structure 6 is respectively connected to an air supply duct structure 7 and a gas supply duct structure 8, and the air supply duct structure 7 is provided with a heat storage component 9. The burner structure 6 includes a burner shell 605, and an air chamber 606 and a wind chamber 607 are respectively opened inside the burner shell 605. An air jet column 603 is installed vertically in the air chamber 606, and an air jet column 604 is installed vertically in the wind chamber 607. A main connector 601 is provided between the upper ends of the air jet column 603 and the air jet column 604. The main connector 601 is fixedly installed on the crossbeam 3. The heat insulation cover 10 is provided with a lifting drive structure 5 for driving the air jet column 603 and the air jet column 604 to move up and down within the burner shell 605 to adjust the vertical height range of the flame.

[0040] See instruction manual attached Figure 4 , Figure 6 , Figure 7 and Figure 8As shown, the outer side of the burner housing 605 is provided with six or more sets of jet heads 608 evenly distributed around its axis. Each set includes several jet heads 608 evenly distributed along the axial direction of the burner housing 605. The jet heads 608 are connected to the gas chamber 606. When the jet column 603 is driven up and down by the lifting drive structure 5, the outer wall of the jet column 603 can seal the jet heads 608. The jet direction of the jet head 608 is tangent to the outer circumferential direction of the gas chamber 606. The air chamber 607 has six or more air chambers evenly distributed around the air chamber 606. The outer wall of the burner shell 605 has air spray slots 609 that correspond one-to-one with the air chambers 607 and enable the air chambers 607 to communicate with the outside. When the air spray column 604 is driven up and down by the lifting drive structure 5, the outer wall of the air spray column 604 can close the contact part of the air spray slot 609. The air spray slot 609 corresponds one-to-one with the jet head 608, and the air outlet direction of the corresponding air spray slot 609 is consistent with the air outlet direction of the jet head 608. The main connector 601 has an annular air chamber 602 that communicates with each air spray column 604. The annular air chamber 602 is connected to the air supply duct structure 7. Through the aforementioned structural design, the gas and air can be ejected from the burner shell 605 at multiple heights and in all directions, forming a surrounding combustion zone. This avoids uneven local heating and is suitable for the need for all-around heating of the interior of the burner. The ejected gas forms a rotating airflow. Simultaneously, the air outlet direction of the air jet 609 is consistent with that of the jet head 608, and the synchronously ejected air will fully mix with the rotating gas, improving combustion efficiency and ensuring a uniform and stable flame temperature. When the lifting drive structure 5 drives the jet column 603 and the air jet column 604 to move up and down, their outer walls can respectively close the jet head 608 and the air jet 609 at different heights. If it is necessary to reduce the flame range, the jet column 603 can be lowered to close the upper jet head 608, and the air jet column 604 can simultaneously close the corresponding upper air jet 609. If it is necessary to expand or raise the flame range, the closed area can be reduced by raising the jet column, releasing more height jet heads 608 and air jet 609. This can be flexibly adjusted according to the depth of the burner to adapt to different heating requirements.

[0041] See instruction manual attached Figure 1 , Figure 2 and Figure 4As shown, the lifting and rotating support structure 2 includes a base 201, a first motor 206 fixedly installed inside the base 201, a lower support cylinder 202 fixedly installed on the upper side of the base 201, an upper lifting column 203 rotatably and slidably installed inside the upper end of the lower support cylinder 202, the upper end of the upper lifting column 203 is fixedly connected to the crossbeam 3 through a support block 204, a hydraulic cylinder 205 is fixedly connected to the output shaft end of the first motor 206, and an embedding hole for nesting the hydraulic cylinder 205 is opened inside the upper lifting column 203, the push rod head end of the hydraulic cylinder 205 is fixedly connected to the inner top surface of the embedding hole. Through the above specific structural design, the lifting and rotating support structure 2 can adjust the vertical height of the crossbeam 3 and the burner structure 6, and can also adjust the horizontal angle position of the burner structure 6, which facilitates the adjustment of the flame position according to the placement position of the package.

[0042] See instruction manual attached Figure 1 and Figure 3 As shown, the linear displacement drive structure 4 includes a first electric telescopic rod 403, which is fixedly mounted on the base 1 via a fixed seat 404. The push rod head of the first electric telescopic rod 403 is fixedly connected to the base 201. The bottom side of the base 201 is provided with a support wheel 406 for rolling contact with the upper surface of the base 1. Two or more guide rods 402 are symmetrically distributed on both sides of the first electric telescopic rod 403 with the first electric telescopic rod 403 as the center. The outer side of the base 201 is fixedly provided with lugs 405 corresponding to the guide rods 402. The lugs 405 are provided with guide holes for sliding through the guide rods 402. The two ends of the guide rods 402 are fixedly mounted on the base 1 via support frames 401. In practical applications, the first electric telescopic rod 403 is fixed to the base 1 via the fixed seat 404, and its push rod is directly connected to the seat 201. Through the telescopic movement of the push rod of the first electric telescopic rod 403, the seat 201 can be pushed to move horizontally along the surface of the base 1, thereby driving the upper lifting and rotating support structure 2, the crossbeam 3 and the burner structure 6 to move synchronously, realizing the horizontal linear adjustment of the burner's working position. In conjunction with the lifting and rotating support structure 2, the working coverage of the bread baker can be expanded.

[0043] See instruction manual attached Figure 3 and Figure 4 As shown, the lifting drive structure 5 includes a lifting seat 502 that is slidably disposed inside the heat insulation cover 10. The upper end of the burner shell 605 is fixedly disposed on the lifting seat 502. A second electric telescopic rod 501 is fixedly disposed on the heat insulation cover 10. The push rod head of the second electric telescopic rod 501 extends into the heat insulation cover 10 and is fixedly connected to the upper surface of the lifting seat 502.

[0044] The lower outer side of the heat insulation cover 10 is provided with a gas collecting protrusion ring 1001, and the inner side of the gas collecting protrusion ring 1001 is provided with an inner filter screen sleeve 1002.

[0045] There are two burner structures 6. The air supply pipe structure 8 includes a second air supply pipe 802 that corresponds to the burner structure 6. One end of the second air supply pipe 802 is connected to the upper end of the corresponding jet column 603. The other end of the two second air supply pipes 802 is connected to one end of the first air supply pipe 801. The other ends of the two first air supply pipes 801 are connected to each other by an air inlet pipe 805. A second electromagnetic three-way valve 804 is provided between the first air supply pipe 801 and the air inlet pipe 805.

[0046] See instruction manual attached Figure 5 As shown, the air supply duct structure 7 includes a first air supply pipe 701 corresponding to the burner structure 6. One end of the first air supply pipe 701 is connected to the corresponding annular air chamber 602. The other ends of the two first air supply pipes 701 are connected to one end of a second air supply pipe 704. A fan 703 is provided at the other end of the second air supply pipe 704. A first electromagnetic three-way valve 702 is provided at the connection between the first air supply pipe 701 and the second air supply pipe 704.

[0047] See instruction manual attached Figure 1 , Figure 3 and Figure 5 As shown, the heat storage component 9 includes two heat storage boxes 901. The heat storage boxes 901 are fixedly mounted on the crossbeam 3 by the support plate 906 on the bottom side. The outlets of the two heat storage boxes 901 are respectively connected to one end of the heat storage exhaust pipe 902. The other ends of the two heat storage exhaust pipes 902 are connected to the heat storage extraction pipe 903. A third electromagnetic three-way valve 904 is provided at the connection between the heat storage exhaust pipe 902 and the heat storage extraction pipe 903. The heat storage extraction pipe 903 is connected to the air inlet of the fan 703. The air inlet of the heat storage box 901 is connected to one end of the heat storage air inlet pipe 905. The other end of the heat storage air inlet pipe 905 is connected to the air collecting ring 1001 and communicates with the inside of the heat insulation cover 10. In practical applications, the high-temperature flue gas generated by combustion is gathered inside the insulation cover 10, collected by the lower gas collecting ring 1001, filtered for impurities by the filter screen sleeve 1002, and then introduced into one of the heat storage boxes 901 through the heat storage air intake pipe 905 to achieve preliminary recovery and storage of waste heat. The two heat storage boxes 901 are fixed to the crossbeam 3 by the support plate 906 and can alternately perform heat storage operations: when one heat storage box completes heat storage, the gas path is switched by the third electromagnetic three-way valve 904, so that the other heat storage box 901 is connected to the flue gas collection circuit to ensure continuous waste heat recovery. The waste heat stored in the heat storage box 901 is transported to the heat storage exhaust pipe 902 to the heat storage exhaust pipe 903, and then introduced into the air inlet of the fan 703 by the heat storage exhaust pipe 903. After mixing with fresh air, it is sent back into the burner structure 6 through the air supply pipe structure 7 to participate in combustion, realizing heat recycling and improving energy efficiency.

[0048] Combined with the alternating flame pattern of the burner structure 6, the two heat storage boxes 901 of the heat storage component 9 can respectively store heat for the flue gas generated by different burner structures 6. Through the switching control of the third electromagnetic three-way valve 904, and in conjunction with the air supply duct structure 7, the heat gas can be accurately distributed to ensure the heat recovery efficiency when multiple burners work together.

[0049] Working principle and technical effects of the present invention:

[0050] In use, the lifting and rotating support structure 2 and the linear displacement drive structure 4 work together to adjust the height and position of the flame according to the size and position of the container. Specifically, the rotation of the output shaft of the first motor 206 can drive the horizontal rotation of the crossbeam 3, thereby adjusting the position of the burner structure 6. The first electric telescopic rod 403 of the linear displacement drive structure 4 can drive the base 201 to move axially along the guide rod 402 under the support of the support wheel 406, thereby adjusting the linear position of the burner structure 6 and realizing range-based position adjustment of the burner structure 6. The lifting and rotating support structure 2 and the linear displacement drive structure 4 can also be used for large-range mobile flame heating of ultra-large containers.

[0051] Depending on the depth of the package, the lifting drive structure 5 can adjust the up-and-down movement of the burner shell 605, thereby adjusting the position of the air jet 604 within the air cavity 607 and the position of the air jet 603 within the air cavity 606. This allows adjustment of the flame height range of the burner shell 605 in the vertical direction, changing the existing downward flame spraying method to a simultaneous side-to-side circumferential flame spraying and downward flame spraying, thus achieving large-area uniform heating of the package interior. Furthermore, the heating range is adjustable.

[0052] The flue gas generated by heating can enter the heat storage component 9 for heat storage. Specifically, the two burner structures 6 can alternately spray fire, and the high-temperature flue gas generated also alternately enters the two heat storage boxes 901 of the heat storage component 9 for heat storage. After heat storage is completed, the flue gas is then sent into the burner structure 6 through the air supply duct structure 7 to achieve high-speed fire.

[0053] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A gas-fired lifting and rotating bread oven, characterized in that: The base includes a crossbeam above the base, a lifting and rotating support structure for lifting and lowering the crossbeam and driving it to rotate horizontally, and a linear displacement drive structure for driving the lifting and rotating support structure to rotate horizontally. One end of the crossbeam is provided with two or more burner structures, the outside of the burner structure is provided with a heat insulation cover, and the burner structure is respectively connected to an air supply duct structure and an air supply duct structure, and the air supply duct structure is provided with a heat storage component. The burner structure includes a burner shell, inside which are respectively an air chamber and a wind chamber. An air jet column is vertically mounted in the air chamber, and an air jet column is vertically mounted in the wind chamber. A main connector is provided between the upper ends of the air jet column and the air jet column. The main connector is fixedly mounted on a crossbeam. The heat insulation cover is provided with a lifting drive structure for driving the air jet column and the air jet column to move up and down within the burner shell to adjust the vertical range of the flame.

2. The gas-fired lifting and rotating bread oven according to claim 1, characterized in that: The outer side of the burner shell is provided with six or more groups of jet heads evenly distributed around its axis. Each group includes several jet heads evenly distributed along the axial direction of the burner shell. The jet heads are connected to the gas chamber. When the jet column is driven up and down by the lifting drive structure, the outer wall of the jet column can seal the jet heads. The jet direction of the jet head is tangent to the outer circumferential direction of the gas chamber.

3. The gas-fired lifting and rotating bread oven according to claim 2, characterized in that: The air chamber is provided with six or more air chambers evenly distributed around the air chamber. The outer wall of the burner shell is provided with air spray slots that correspond one-to-one with the air chambers and enable the air chambers to communicate with the outside. When the air spray column is driven up and down by the lifting drive structure, the outer wall of the air spray column can seal the air spray slots in contact. The air spray slots correspond one-to-one with the air jet head, and the air outlet direction of the corresponding air spray slot is consistent with the air outlet direction of the air jet head. The main connector is provided with annular air chambers that communicate with each air spray column. The annular air chambers are connected to the air supply duct structure.

4. The gas-fired lifting and rotating bread oven according to claim 1, characterized in that: The lifting and rotating support structure includes a base, in which a first motor is fixedly installed. A lower support cylinder is fixedly installed on the upper side of the base. An upper lifting column is rotatably and slidably installed inside the upper end of the lower support cylinder. The upper end of the upper lifting column is fixedly connected to a crossbeam via a support block. A hydraulic cylinder is fixedly connected to the output shaft end of the first motor. An embedding hole for nesting the hydraulic cylinder is opened inside the upper lifting column. The push rod head end of the hydraulic cylinder is fixedly connected to the inner top surface of the embedding hole.

5. A gas-fired lifting and rotating bread oven according to claim 4, characterized in that: The linear displacement drive structure includes a first electric telescopic rod, which is fixedly mounted on the base via a fixed seat. The push rod head of the first electric telescopic rod is fixedly connected to the base. The bottom side of the base is provided with a support wheel for rolling contact with the upper surface of the base. Two or more guide rods are symmetrically distributed on both sides of the first electric telescopic rod. The outer side of the base is fixedly provided with lugs corresponding to the guide rods. The lugs are provided with guide holes for sliding through the guide rods. The two ends of the guide rods are fixedly mounted on the base via support frames.

6. The gas-fired lifting and rotating bread oven according to claim 1, characterized in that: The lifting drive structure includes a lifting seat that slides up and down inside the heat insulation cover. The upper end of the burner shell is fixedly mounted on the lifting seat. A second electric telescopic rod is fixedly mounted on the heat insulation cover. The push rod head of the second electric telescopic rod extends into the heat insulation cover and is fixedly connected to the upper surface of the lifting seat.

7. The gas-fired lifting and rotating bread oven according to claim 3, characterized in that: The lower outer side of the heat insulation cover is provided with a gas collecting ring, and the inner side of the gas collecting ring is provided with an inner filter screen.

8. The gas-fired lifting and rotating bread oven according to claim 1, characterized in that: The burner structure is provided in two parts. The air supply pipe structure includes a second air supply pipe that corresponds to the burner structure. One end of the second air supply pipe is connected to the upper end of the corresponding jet column. The other ends of the two second air supply pipes are connected to one end of the first air supply pipe. The other ends of the two first air supply pipes are connected to each other by an air inlet pipe. A second electromagnetic three-way valve is provided between the first air supply pipe and the air inlet pipe.

9. A gas-fired lifting and rotating bread oven according to claim 8, characterized in that: The air supply duct structure includes a first air supply pipe that corresponds one-to-one with the burner structure. One end of the first air supply pipe is connected to the corresponding annular air chamber. The other ends of the two first air supply pipes are connected to one end of a second air supply pipe. A fan is provided at the other end of the second air supply pipe. A first electromagnetic three-way valve is provided at the connection between the first air supply pipe and the second air supply pipe.

10. A gas-fired lifting and rotating bread oven according to claim 7, characterized in that: The heat storage assembly includes two heat storage boxes, which are fixedly mounted on the crossbeam by a support plate on the bottom side. The air outlets of the two heat storage boxes are respectively connected to one end of a heat storage exhaust pipe. The other ends of the two heat storage exhaust pipes are connected to a heat storage extraction pipe. A third electromagnetic three-way valve is installed at the connection between the heat storage exhaust pipe and the heat storage extraction pipe. The heat storage extraction pipe is connected to the air inlet of the fan. The air inlet of the heat storage box is connected to one end of a heat storage air inlet pipe. The other end of the heat storage air inlet pipe is connected to the air collecting ring and communicates with the inside of the insulation cover.

Images