Portable pizza oven

Abstract

A portable pizza oven comprises an oven body internally provided with a baking cavity, the baking cavity is internally connected with a rotatable rotating disc, the upper portion of the oven body is provided with an exhaust pipe used for exhausting hot air outwards, the lower end of the exhaust pipe is an air inlet communicated with the baking cavity, and the upper end of the exhaust pipe is an air outlet; the exhaust pipe is provided with an impeller capable of being driven by hot air flow to rotate, and the impeller is connected with a transmission shaft driven by the impeller to rotate. The transmission shaft and the rotating disc are in transmission through a gear set, and the gear set is configured to be in linkage with the rotating disc to rotate when the transmission shaft is driven by the impeller to rotate. According to the pizza oven, rising hot air generated in the fuel combustion process serves as power to push the impeller to rotate, the impeller drives the rotating disc to rotate through the transmission shaft and the gear set, the effect of evenly baking pizza cakes is achieved, and the pizza oven has the advantages of being simple and reliable in structure and conforming to the general trend of social environmental protection.

Description

Technical Field

[0001] This utility model relates to the field of pizza oven technology, specifically to a portable pizza oven. Background Technology

[0002] Pizza ovens are used to bake pizzas. They generally rely on a turntable or similar device to rotate the pizza inside and provide high-temperature heating, thus ensuring that the pizza is heated evenly.

[0003] A pizza baking oven with a turntable, disclosed in application CN202120437891.2, includes: an oven body, with a combustion chamber and a baking chamber inside; a fuel tray in the combustion chamber; the combustion chamber and the baking chamber are connected; an exhaust pipe is fixed to the upper part of the oven body, located above the baking chamber; a bearing seat is mounted on a support frame; a rotating shaft is mounted on the bearing seat; a flange is fixed to the lower end of the rotating shaft, located outside the oven body; the flange is connected to a driving element, which can be a handwheel or a drive motor; and a turntable is fixedly mounted to the upper end of the rotating shaft. During baking, the rotating shaft is driven to rotate by the driving element outside the oven body, which in turn drives the turntable in the baking chamber to rotate. The pizza rotates with the turntable inside the baking chamber, preventing one side of the pizza from being heated and ensuring even heating.

[0004] However, while this technical solution offers both electric and manual methods to drive the turntable, it still has certain inconveniences during use. Specifically, if the motor is connected to AC power, the pizza oven is not suitable for outdoor use. If the motor is powered by a battery, it is susceptible to problems such as forgetting to bring the battery or insufficient battery power, causing the motor to malfunction and affecting usability. Furthermore, using batteries is neither convenient nor environmentally friendly. When using a handwheel to drive the turntable, the user needs to constantly operate the handwheel, which is cumbersome and inconvenient. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this utility model provides a portable pizza oven.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A portable pizza oven includes an oven body with an internal baking cavity, a rotatable turntable connected inside the baking cavity, and an exhaust pipe for discharging hot air from the upper part of the oven body. The lower end of the exhaust pipe is an air inlet communicating with the baking cavity, and the upper end is an air outlet. The exhaust pipe is characterized by having an impeller that can be rotated by the hot air flow, and the impeller is connected to a drive shaft that is driven to rotate by the impeller. The drive shaft and the turntable are driven by a gear set, which is configured to rotate the turntable in conjunction with the drive shaft when it is rotated by the impeller.

[0008] In this utility model, the gear set includes a first gear and a second gear. The first gear is engaged on the transmission shaft and rotates coaxially with the transmission shaft. The second gear is engaged on the turntable and rotates coaxially with the turntable. The second gear meshes with the first gear.

[0009] In this invention, the diameter of the first gear is smaller than the diameter of the second gear.

[0010] In this utility model, the positioning bracket inside the exhaust pipe is provided with an upper rotating shaft hole, the upper end of the transmission shaft is provided with an upper shaft part that can be rotatably fitted in the upper rotating shaft hole, and the bottom is provided with a lower rotating shaft hole. A first support rod is connected to the furnace body, and the upper end of the first support rod is inserted into the lower rotating shaft hole.

[0011] In this invention, the top of the first support rod is provided with a first ball bearing located in the lower pivot hole.

[0012] In this utility model, the furnace body is provided with a rotating assembly, which includes a rotating seat fixed on the furnace body and a rotating seat rotatably mounted on the rotating seat. The bottom center of the turntable is provided with an adaptation synchronization groove. The rotating seat includes a rotating body that is adapted to the adaptation synchronization groove and drives the turntable to rotate synchronously. The second gear is connected and fixed to the rotating body.

[0013] In this utility model, the oven body is further provided with an isolation cavity, the isolation cavity including at least a bottom chamber located below the baking cavity, and the bottom surface of the baking cavity is provided with a first clearance through hole communicating with the bottom chamber;

[0014] The rotating seat is provided with a vertical slot, the lower end of which is provided with a rotating screw hole and the upper end with a rotating groove. The rotating seat includes a rotating body, an extension, and a rotating shaft connected from top to bottom. The upper end of the extension and the rotating body extend into the baking cavity through a first clearance through hole, and the lower end of the extension is located in the rotating groove. The rotating shaft is located in the vertical slot and is provided with a rotating support groove corresponding to the rotating screw hole. The rotating screw hole is threaded with a second support rod that can be adjusted vertically. The upper end of the second support rod is inserted into the rotating support groove.

[0015] In this utility model, the rotating groove is provided with a lower bead groove, the lower end of the extension is provided with an upper bead groove, and a plurality of annularly distributed central balls are provided between the upper bead groove and the lower bead groove.

[0016] In this invention, the top of the second support rod is provided with a second ball bearing located in the rotating support groove.

[0017] In this utility model, a chimney is installed at the upper end of the exhaust pipe. The chimney includes a large-diameter pipe, a reducing pipe, and a small-diameter pipe connected and communicating sequentially from bottom to top. The diameter of the large-diameter pipe is larger than the diameter of the small-diameter pipe, and the diameter of the reducing pipe gradually increases from bottom to top. The large-diameter pipe is fitted onto the upper end of the exhaust pipe.

[0018] The beneficial effects of this utility model are:

[0019] 1. This utility model consists of an impeller, a drive shaft, a gear set, and a rotating assembly to form a linkage mechanism for rotating a turntable. In use, the rising hot air generated during fuel combustion is used as power to drive the impeller to rotate. The impeller drives the turntable to rotate through the drive shaft and gear set, achieving the effect of evenly baking pizzas. It has the advantages of simple structure and reliability, and is also more in line with the social trend of environmental protection.

[0020] 2. The first ball and intermediate ball reduce the damping of the linkage mechanism during rotation, making the rotation of the transmission shaft, gear set and rotating seat smoother, which is conducive to the linkage mechanism driving the turntable to rotate.

[0021] 3. The diameter of the first gear is smaller than that of the second gear. In this way, the small gear drives the large gear, thereby reducing the input force required to drive the small gear and making it easier for the impeller to drive the first gear to rotate.

[0022] 4. The constriction structure of the chimney forces the airflow at the impeller to accelerate, causing the impeller blades to be subjected to more momentum impacts from gas molecules per unit time, thereby increasing the rotational torque of the impeller and optimizing the energy conversion efficiency of the impeller.

[0023] In summary, pizza ovens use the rising hot air generated during fuel combustion as power to drive the impeller to rotate. The impeller drives the turntable to rotate through the transmission shaft and gear set, achieving the effect of evenly baking the pizza. It has the advantages of simple structure and reliability, and conforms to the social trend of environmental protection. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0025] Figure 1 A 3D view of a pizza oven;

[0026] Figure 2A 3D view of the pizza oven's fuel container, oven door, and fuel dispenser cover when open;

[0027] Figure 3 Cross-section of a pizza oven Figure 1 ;

[0028] Figure 4 A combined sectional view of the impeller, drive shaft, and gear set;

[0029] Figure 5 Cross-section of a pizza oven Figure 2 ;

[0030] Figure 6 An exploded view of the rotating assembly;

[0031] Figure 7 Exploded view of the impeller and exhaust pipe;

[0032] Figure 8 A three-dimensional view of the combination of impeller, drive shaft, gear set and exhaust pipe;

[0033] Figure 9 This is an exploded view of the housing and the mating seat. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0035] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0036] Furthermore, unless otherwise explicitly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection using welding, a detachable connection using bolts, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0038] Reference Figure 1-9 A portable pizza oven includes an oven body 1 with an internal baking cavity 101. A rotatable turntable 2 is connected inside the baking cavity 101. An exhaust pipe 3 for discharging hot air is provided on the upper part of the oven body 1. The lower end of the exhaust pipe 3 is an air inlet communicating with the baking cavity 101, and the upper end is an air outlet. The exhaust pipe 3 is provided with an impeller 4 that can be rotated by the hot air flow. The impeller 4 is connected to a drive shaft 5 that is driven to rotate by the impeller. The upper end of the drive shaft 5 is rotatably connected to the exhaust pipe 3, and the lower end is rotatably connected to the oven body 1. The drive shaft 5 and the turntable 2 are driven by a gear set. The gear set is configured to rotate the turntable 2 in conjunction with the drive shaft 5 when it is driven to rotate by the impeller 4.

[0039] The pizza oven uses the rising hot air generated during fuel combustion as power to drive the impeller 4 to rotate. The impeller 4 drives the turntable 2 to rotate through the transmission shaft 5 and gear set, so as to achieve the effect of baking pizza evenly. It also has the advantages of simple structure and reliability, and is more in line with the social trend of environmental protection.

[0040] In this embodiment, the gear set includes a first gear 6 and a second gear 7. The first gear 6 is fitted onto the transmission shaft 5 and rotates coaxially with the transmission shaft 5; the second gear 7 is fitted onto the turntable 2 and rotates coaxially with the turntable 2, and the second gear 7 meshes with the first gear 6. Furthermore, the diameter of the first gear 6 is smaller than the diameter of the second gear 7. This utilizes a smaller gear to drive a larger gear, reducing the input force required to drive the smaller gear and facilitating the impeller 4 to drive the first gear 6 to rotate.

[0041] In this embodiment, the exhaust pipe 3 is provided with a positioning bracket 31, and the positioning bracket 31 is provided with an upper rotating shaft hole 32. The upper end of the transmission shaft 5 is provided with an upper shaft part 51 that can be rotatably fitted in the upper rotating shaft hole 32, thereby positioning the upper end of the transmission shaft 5. Further, the positioning bracket 31 includes a positioning tube part 311 and positioning connecting parts 312 distributed around the outer periphery of the positioning tube part 311. The inner cavity of the positioning tube part 311 is the upper rotating shaft hole 32. One end of the positioning connecting part 312 is connected to the positioning tube part 311, and the other end is connected to the inner wall of the exhaust pipe 3. An air passage is formed between two circumferentially adjacent positioning connecting parts 312, allowing hot air to flow to the air outlet.

[0042] In this embodiment, the bottom of the drive shaft 5 is provided with a lower rotating shaft hole 52, which is coaxially arranged with the upper shaft part 51. The furnace body 1 is threaded with a first support rod 8 that can be adjusted vertically. The upper end of the first support rod 8 is inserted into the lower rotating shaft hole 52 to position the lower end of the drive shaft 5.

[0043] Furthermore, the first support rod 8 uses a first bolt. The first support rod 8 includes a first rod body, a first screw, and a first support head connected sequentially from top to bottom. The furnace body 1 is provided with a mounting base 23, which has a threaded hole. The first screw is threaded into the threaded hole, and the first rod body is inserted into the lower rotating shaft hole 52. By turning the first support head to rotate the first screw, the height of the first support rod 8 can be adjusted, thereby adjusting the height of the transmission shaft 5 and the first gear 6, so that the first gear 6 can cooperate with the second gear 7. Specifically, the bottom surface of the baking cavity 101 is provided with a second clearance through hole communicating with the bottom cavity 105, and the bottom of the furnace body 1 is provided with a second mounting through hole communicating with the bottom cavity 105. The mounting base 23 includes a mounting body and a mounting screw connected sequentially from top to bottom. The bottom of the mounting body abuts against the bottom surface of the bottom cavity 105, and the lower end of the mounting screw passes through the second mounting through hole and is threaded with at least one mounting nut, thereby fixing the mounting base 23 to the furnace body 1.

[0044] Furthermore, the top of the first support rod 8 is provided with a first ball bearing 9 located within the lower pivot hole 52, thereby reducing the damping when the drive shaft 5 rotates. In addition, the top of the lower pivot hole 52 is a first support ball groove 53 with a semi-circular cross-section. The radius of the first support ball groove 53 is larger than the radius of the first ball bearing 9, thereby ensuring that the first support ball groove 53 and the first ball bearing 9 always maintain point contact, reducing friction.

[0045] In this embodiment, the outer side of the oven body 1 is provided with a food loading / unloading port 102, an ash removal port 103, and a fuel loading port 104 communicating with the baking chamber 101. The food loading / unloading port 102, the fuel loading port 104, and the ash removal port 103 are located on different surfaces of the oven body 1. The food loading / unloading port 102 and the ash removal port 103 are located on two sides of the oven body 1. An oven door 10 is installed on the side of the oven body 1 with the food loading / unloading port 102. The upper end of the oven door 10 is hinged to the oven body 1 by a hinge shaft, thereby realizing the combined connection between the oven door 10 and the oven body 1. After opening the oven door 10, an undercooked pizza can be placed on the turntable 2 or a cooked pizza can be removed from the turntable 2. In addition, a first gap is left between the oven door 10 and the oven body 1 to allow oxygen to enter the baking chamber 101 from the food loading / unloading port 102.

[0046] Furthermore, the fuel inlet 104 is located on the top of the furnace body 1 and is positioned near the ash outlet 103. The fuel inlet 104 is closed by a detachable fuel inlet cover 11. Specifically, an extension frame 108 is provided on the top of the furnace body 1 around the fuel inlet 104. The bottom of the fuel inlet cover 11 is provided with a cover positioning groove that is adapted to the extension frame 108. When it is necessary to close the fuel inlet 104, the fuel inlet cover 11 is fitted onto the extension frame 108 through the cover positioning groove, thereby closing the fuel inlet 104.

[0047] Furthermore, a fuel container 12 is inserted into the ash outlet 103. The fuel container 12 includes a fuel tray for holding fuel and a fuel cover at one end of the fuel tray. When the fuel tray is inserted into the baking chamber 101 from the ash outlet 103, the other end of the fuel tray is located below the fuel inlet 104 to facilitate the feeding of fuel into the fuel tray. The exhaust pipe 3 and the fuel container 12 are located at opposite ends of the furnace body 1, and the turntable 2 is located between the exhaust pipe 3 and the fuel container 12. During fuel combustion, the hot air generated first passes through the turntable 2 and then flows to the exhaust pipe 3, ensuring that the pizza on the turntable 2 can be effectively heated.

[0048] In this embodiment, the oven body 1 is further provided with an isolation chamber, which includes at least a bottom chamber 105 located below the baking chamber 101, a top chamber 106 located above the baking chamber 101, and a side chamber 107 located on one side of the baking chamber 101. The side chamber 107 is located away from the food loading / unloading port 102, and its upper and lower ends are respectively connected to the top chamber 106 and the bottom chamber 105. The isolation chamber design reduces heat loss from the baking chamber 101 to the outside, allowing the heat generated by fuel combustion to be utilized as much as possible to heat the gas and pizza inside the baking chamber 101. Furthermore, the first gear 6 and the second gear 7 are both located inside the bottom chamber 105, preventing them from being directly exposed inside the baking chamber 101 and reducing the risk of food residue falling onto the gears.

[0049] In this embodiment, the furnace body 1 is provided with a rotating assembly for rotatably mounting the turntable 2. The rotating assembly includes a rotating seat 13 fixed on the furnace body 1 and a rotating seat 14 rotatably mounted on the rotating seat 13. The bottom center of the turntable 2 is provided with an adaptive synchronization groove, which is adapted to the shape of the rotating body 141. The rotating seat 14 includes a rotating body 141 adapted in the adaptive synchronization groove and driving the turntable 2 to rotate synchronously, so as to facilitate the combination, installation and synchronous rotation between the turntable 2 and the rotating seat 14. The second gear 7 is connected and fixed to the rotating body 141, so that the second gear 7 and the rotating body 141 rotate coaxially, thereby driving the rotating seat 14 to rotate relative to the rotating seat 13.

[0050] Furthermore, the bottom surface of the baking cavity 101 is provided with a first clearance through hole communicating with the bottom cavity 105, and the bottom of the oven body 1 is provided with a first mounting through hole communicating with the bottom cavity 105. The rotating seat 13 includes a base body 131 and an extension screw 132 connected sequentially from top to bottom. The bottom of the base body 131 presses against the bottom surface of the bottom cavity 105. The lower end of the extension screw 132 passes through the first mounting through hole and is threaded with at least one fixing nut 15, thereby fixing the rotating seat 13 to the oven body 1.

[0051] Furthermore, the rotating seat 13 is provided with a vertical slot 133, the lower end of the vertical slot 133 is provided with a rotating screw hole, and the upper end is provided with a rotating groove 134, the rotating groove 134 is provided with a lower bead groove 135; the rotating seat 14 includes a rotating body 141, an extension 142 and a rotating shaft 143 connected from top to bottom, wherein the upper end of the extension 142 and the rotating body 141 extend into the baking cavity 101 from the first clearance through hole, the lower end of the extension 142 is located in the rotating groove 134, the lower end of the extension 142 is provided with an upper bead groove 145, and a number of annularly distributed central balls 16 are provided between the upper bead groove 145 and the lower bead groove 135, thereby utilizing the action of multiple central balls 16 to rotate the rotating seat 14 onto the rotating seat 13, improving the smoothness of the rotation of the rotating seat 14.

[0052] Furthermore, the rotating shaft 143 is located within the vertical slot 133. The rotating shaft 143 is provided with a rotating support slot 144 corresponding to a rotating screw hole. A second support rod 20, with adjustable height, is threaded into the rotating screw hole. The upper end of the second support rod 20 is inserted into the rotating support slot 144, thereby positioning the lower end of the rotating shaft 143. Specifically, the second support rod 208 is a second bolt. The second support rod 208 includes a second rod body, a second screw, and a second support head connected sequentially from top to bottom. The second screw is threaded into the rotating screw hole, and the second rod body is inserted into the rotating support slot 144. By turning the second support head to rotate the second screw, the height of the second support rod 208 can be adjusted, thereby adjusting the height of the rotating shaft 143.

[0053] In this embodiment, the top of the second support rod 20 is provided with a second ball bearing 21 located in the rotating support groove 144, thereby reducing the damping when the rotating shaft 143 rotates.

[0054] In this embodiment, a protective protrusion ring 1011 is provided on the bottom surface of the baking cavity 101, which is provided around the first clearance through hole. The protective protrusion ring 1011 is used to prevent food residue from entering the isolation cavity.

[0055] In a preferred embodiment, the impeller 4 is provided with a wheel synchronization through hole 43, the first gear 6 is provided with a tooth synchronization through hole, and the drive shaft 5 passes through the wheel synchronization through hole 43 and the tooth synchronization through hole. The top view cross-sectional shapes of the wheel synchronization through hole 43, the tooth synchronization through hole and the drive shaft 5 are all polygonal, preferably hexagonal, so that the impeller 4, the first gear 6 and the drive shaft 5 can be coaxially rotated.

[0056] In this embodiment, the transmission shaft 5 is provided with a first retaining ring 17 for positioning the impeller 4 and a second retaining ring 18 for positioning the first gear 6. The first retaining ring 17 is located at the bottom of the impeller 4, and the impeller 4 is pressed against the first retaining ring 17 by gravity, which can prevent the impeller 4 from moving downward relative to the transmission shaft 5, and it will not move upward randomly under the action of gravity. The second retaining ring 18 has two corresponding upper and lower ends of the first gear 6 to limit the movement of the first gear 6 relative to the transmission shaft 5, thereby ensuring that the first gear 6 can effectively cooperate with the second gear 7 for transmission.

[0057] In this embodiment, the outer periphery of the exhaust pipe 3 is provided with a support ring 33 located between its upper and lower ends. The upper part of the furnace body 1 is provided with an exhaust port that communicates with the baking chamber 101. The diameter of the exhaust port is adapted to the outer diameter of the exhaust pipe 3. The lower end of the exhaust pipe 3 is inserted into the exhaust port. The bottom of the support ring 33 presses against the upper part of the furnace body 1, thereby realizing the quick insertion of the exhaust pipe 3. The structure is simple and easy to disassemble and assemble.

[0058] In this embodiment, a chimney 19 is installed at the upper end of the exhaust pipe 3. The chimney 19 includes a large-diameter pipe 191, a variable-diameter pipe 192, and a small-diameter pipe 193 connected and communicating sequentially from bottom to top. The diameter of the large-diameter pipe 191 is larger than the diameter of the small-diameter pipe 193, and the diameter of the variable-diameter pipe 192 gradually increases from bottom to top. The large-diameter pipe 191 is fitted onto the upper end of the exhaust pipe 3, and the top of the exhaust pipe 3 presses against the bottom of the variable-diameter pipe 192, thereby achieving the purpose of fixing the chimney 19 onto the exhaust pipe 3. The converging structure of the chimney 19 forces the airflow at the impeller 4 to accelerate, increasing the output torque of the impeller 4, thereby optimizing the energy conversion efficiency of the impeller 4. Moreover, the converging structure of the chimney 19 guides the airflow to concentrate through the effective working area of ​​the impeller 4, reducing lateral turbulence and energy loss. Furthermore, the high-speed outlet airflow forms a directional jet, preventing hot air from generating vortices in the downstream area of ​​the impeller 4, ensuring that energy is continuously transferred to the impeller 4, and achieving the purpose of stabilizing the airflow direction and reducing vortices.

[0059] In this embodiment, the upper end of the chimney 19 is also fitted with an extension pipe 22. The inner diameter of the extension pipe 22 is equal to the inner diameter of the small-diameter pipe 193. The lower end of the extension pipe is welded and fixed with an extension sleeve 221 fitted onto the upper part of the small-diameter pipe 193, thereby realizing the fitting connection between the extension pipe 22 and the chimney 19. By adding the extension pipe 22, the hot air flow rate can be further increased, and the output torque of the impeller 4 can be increased.

[0060] In this embodiment, the impeller 4 includes a disk 41 and a plurality of blades 42 distributed circumferentially along the disk 41. A synchronous through-hole 43 is provided on the disk 41. The inner end of each blade 42 is fixedly connected to the outer periphery of the disk 41, and the outer end extends close to the inner wall of the exhaust pipe 3, with an anti-interference gap A between it and the inner wall of the exhaust pipe 3. This anti-interference gap A is used to prevent the blades 42 from interfering with and colliding with the exhaust pipe 3 during the rotation of the impeller 4, thus affecting the normal rotation of the impeller 4. The blades 42 extend spirally along the circumference of the disk 41, and two adjacent blades 42, together with the outer periphery of the disk 41, form an airflow channel 401 for the flow of heated gas. By increasing the diameter of the disk 41, the rotational torque of the impeller 4 can be increased. The sum of the cross-sectional areas of all airflow channels 401 (i.e., the sum of the cross-sectional areas of all airflow channels of the impeller 4) is equivalent to the cross-sectional area of ​​the small-diameter pipe 193.

[0061] In this embodiment, the furnace body 1 includes a shell 100 and a mating seat 200. The exhaust port, baking chamber 101, food loading port 102, ash removal port 103, fuel loading port 104, and isolation chamber are all provided on the shell 100. The first mounting through hole and the second mounting through hole are provided on the mating seat 200. The bottom of the shell 100 is provided with a mounting positioning hole 109. The mating seat 200 includes a mounting positioning part 201 that is adapted to be inserted into the mounting positioning hole 109. The mating seat 200 and the shell 100 can be combined by bolt connection or welding. By providing the first mounting through hole and the second mounting through hole on the mating seat 200, the installation of the gear set and rotating components is facilitated.

[0062] In this embodiment, the furnace body 1 has furnace feet 300 at the bottom of the shell 100, which are used to lift the furnace body 1.

[0063] The above description is only a preferred embodiment of the present utility model. Any technical solution that achieves the purpose of the present utility model by essentially the same means shall fall within the protection scope of the present utility model.

Claims

1. A portable pizza oven, comprising an oven body (1) having an internal baking cavity (101), wherein a rotatable turntable (2) is connected inside the baking cavity (101), and an exhaust pipe (3) for discharging hot air is provided on the upper part of the oven body (1), wherein the lower end of the exhaust pipe (3) is an air inlet communicating with the baking cavity (101), and the upper end is an air outlet; characterized in that: The exhaust pipe (3) is provided with an impeller (4) that can be driven to rotate by hot air flow. The impeller (4) is connected to a drive shaft (5) that is driven to rotate by it. The drive shaft (5) and the turntable (2) are driven by a gear set. The gear set is configured to rotate the turntable (2) in conjunction with the drive shaft (5) when it is driven to rotate by the impeller (4).

2. A portable pizza oven according to claim 1, characterized in that: The gear set includes a first gear (6) and a second gear (7). The first gear (6) is fitted on the transmission shaft (5) and rotates coaxially with the transmission shaft (5). The second gear (7) is fitted on the turntable (2) and rotates coaxially with the turntable (2). The second gear (7) meshes with the first gear (6).

3. A portable pizza oven according to claim 2, characterized in that: The diameter of the first gear (6) is smaller than the diameter of the second gear (7).

4. A portable pizza oven according to claim 1, characterized in that: The positioning bracket (31) inside the exhaust pipe (3) is provided with an upper rotating shaft hole (32). The upper end of the transmission shaft (5) is provided with an upper shaft part (51) that can be rotatably fitted in the upper rotating shaft hole (32), and the bottom is provided with a lower rotating shaft hole (52). The furnace body (1) is connected with a first support rod (8), and the upper end of the first support rod (8) is inserted into the lower rotating shaft hole (52).

5. A portable pizza oven according to claim 4, characterized in that: The top of the first support rod (8) is provided with a first ball (9) located in the lower pivot hole (52).

6. A portable pizza oven according to claim 2, characterized in that: The furnace body (1) is provided with a rotating assembly, which includes a rotating seat (13) fixed on the furnace body (1) and a rotating seat (14) rotatably mounted on the rotating seat (13). The bottom center of the turntable (2) is provided with an adaptation synchronization groove. The rotating seat (14) includes a rotating body (141) adapted in the adaptation synchronization groove and driving the turntable (2) to rotate synchronously. The second gear (7) is connected and fixed on the rotating body (141).

7. A portable pizza oven according to claim 6, characterized in that: The oven body (1) is also provided with an isolation chamber, which includes at least a bottom chamber (105) located below the baking chamber (101). The bottom surface of the baking chamber (101) is provided with a first clearance through hole communicating with the bottom chamber (105). The rotating seat (13) is provided with a vertical slot (133). The lower end of the vertical slot (133) is provided with a rotating screw hole, and the upper end is provided with a rotating groove (134). The rotating seat (14) includes a rotating body (141), an extension (142), and a rotating shaft (143) connected from top to bottom. The upper end of the extension (142) and the rotating body (141) extend into the baking cavity (101) through the first clearance through hole. The lower end of the extension (142) is located in the rotating groove (134). The rotating shaft (143) is located in the vertical hole groove (133). The rotating shaft (143) is provided with a rotating support groove (144) corresponding to the rotating screw hole. The rotating screw hole is threaded with a second support rod (20) that can be adjusted up and down. The upper end of the second support rod (20) is inserted into the rotating support groove (144).

8. A portable pizza oven according to claim 7, characterized in that: The rotating groove (134) is provided with a lower bead groove (135), and the lower end of the extension (142) is provided with an upper bead groove (145). A number of annularly distributed central balls (16) are provided between the upper bead groove (145) and the lower bead groove (135).

9. A portable pizza oven according to claim 8, characterized in that: The top of the second support rod (20) is provided with a second ball (21) located in the rotating support groove (144).

10. A portable pizza oven according to claim 1, characterized in that: The upper end of the exhaust pipe (3) is equipped with a chimney (19), which includes a large-diameter pipe (191), a reducing pipe (192) and a small-diameter pipe (193) connected and communicating from bottom to top. The diameter of the large-diameter pipe (191) is larger than the diameter of the small-diameter pipe (193), and the diameter of the reducing pipe (192) gradually increases from bottom to top. The large-diameter pipe (191) is fitted onto the upper end of the exhaust pipe (3).

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