Hot air circulation type microwave rapid oven

Abstract

The invention discloses a hot air circulation type microwave rapid oven, and relates to the technical field of food preparation equipment, the oven comprises a control panel, an outer frame body, a door assembly, an inner chamber mechanism, a hot air mechanism, a cooling mechanism and a micro-motion mechanism, the inner chamber mechanism comprises an inner chamber body and a circulation pipe, and the hot air mechanism comprises a hot air motor, a catalyst chamber and a waveguide box. The micro-motion mechanism comprises a mounting plate, a door hinge, a control panel, an inner chamber body, a hot air motor and a cooling mechanism, the mounting plate is fixedly connected with the outer frame, the circulating pipe is fixedly connected with the catalyst chamber, the inner chamber body is provided with a first top hole, the first top hole is formed below the waveguide box, the door assembly is fixedly connected with the door hinge, the outer frame is provided with a top frame, and the top frame is arranged at the top of the outer frame. And the inner chamber mechanism is connected with the control panel through an electric signal.

Description

Technical Field

[0001] The present invention relates to the technical field of food preparation equipment, and in particular, to a hot air circulation type microwave rapid oven. Background Art

[0002] As a heating device widely used in the catering industry, the microwave rapid oven can achieve efficient and rapid heating of food by virtue of its composite heating technology that combines microwave radiation and hot air convection impact, significantly improving the heating efficiency. Through the synergistic effect of microwaves and hot air, the water molecules inside the food are forced to vibrate at high frequencies to generate heat energy, and uniform heat transfer is achieved through hot air circulation, greatly shortening the time required for traditional heating.

[0003] However, since it is mainly for commercial use and needs to meet the high-frequency use requirements, extremely high demands are placed on the quality and durability of the equipment. To ensure the stability and reliability of the equipment, high-strength materials and precision components need to be used in the design and manufacturing process. In addition, due to the complex structure and large weight of the equipment itself, the manufacturing cost per unit is significantly increased. Moreover, there is generally a problem of relatively large opening resistance when using existing microwave ovens. This phenomenon is mainly attributed to factors such as the design of the equipment sealing structure, the mechanical properties of the door hinge, and the insufficient optimization of the counterweight system, which affect the convenience of equipment operation and the user experience. At the same time, reducing energy consumption and improving heating efficiency, heating the food as a whole, and avoiding uneven food heating are important directions for improving the performance of microwave ovens. Summary of the Invention

[0004] The purpose of the present invention is to provide a hot air circulation type microwave rapid oven to solve the problems in the prior art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A hot air circulation type microwave rapid oven includes a control panel, an outer frame body, a door assembly, an inner chamber mechanism, a hot air mechanism, a cooling mechanism, and a micro-motion mechanism. The inner chamber mechanism includes an inner chamber body and a circulation pipe. The hot air mechanism includes a hot air motor, a catalyst chamber, and a waveguide box. The micro-motion mechanism includes a mounting plate and a door hinge. The control panel, the inner chamber body, the hot air motor, the cooling mechanism, and the mounting plate are all fixedly connected to the outer frame body. The circulation pipe is fixedly connected to the catalyst chamber. A first top hole is provided on the inner chamber body, and the first top hole is located below the waveguide box. The door assembly is fixedly connected to the door hinge. A top bracket is provided on the outer frame body, and the top bracket is located at the top of the outer frame body. The inner chamber mechanism is electrically connected to the control panel through an electrical signal.

[0006] The present invention relates to a rapid oven that combines hot air and microwave for heating food simultaneously. The food to be heated is placed in the inner cavity body. The heating time is set through the control panel. Hot air is generated by a hot air motor, and microwave is generated by a waveguide box to heat the food in the inner cavity body. A cooling mechanism is used to accelerate the flow of the cooling air path in the outer frame body, so that the temperature of the electronic components can work within the allowable range. Accessories that come with the oven can be placed on the top rack. When the door assembly is opened and closed, a micro-motion mechanism is driven by a door hinge, reducing the deviation of the microwave leakage during the operation of the equipment and greatly lowering the maximum microwave leakage. When heating food, the inner cavity body is subjected to cyclic recycling and directional reflection, greatly improving the food heating rate and effectively reducing energy consumption.

[0007] Furthermore, the inner cavity mechanism further includes an orifice plate, a reflection mechanism, a regulation mechanism, and a rotation mechanism. The inner cavity body is also provided with an inner spherical surface, flange holes, and bottom holes. The inner spherical surface is provided on the side wall of the inner cavity body. The orifice plate is fixedly connected to the flange holes and the circulation pipe. The reflection mechanism includes a fork-shaped connecting rod frame. The regulation mechanism includes a servo motor, an outer sleeve, a first arc arm, and a second arc arm. The rotation mechanism includes a bottom platform, a driving motor, and a turntable. The servo motor and the bottom platform are both fixedly connected to the inner cavity body. The outer sleeve is rotatably connected to the first top hole. The turntable is rotatably connected to the bottom hole. The fork-shaped connecting rod frame is hinged to both the first arc arm and the second arc arm. The servo motor and the driving motor are both connected to the control panel through electrical signals.

[0008] The food to be heated is placed in the inner cavity body. During heating, the control panel sends an electrical signal to the driving motor, and the driving motor outputs a fixed-axis torque to drive the food to be heated to rotate. The waveguide box emits microwave to the food to be heated. After the microwave impacts and heats the food, it diffuses in all directions. A part of it is reflected by the inner spherical surface on the side wall of the inner cavity body and reheats the food. The servo motor outputs a reciprocating fixed-axis torque to drive the fork-shaped connecting rod frame to open and close, causing the reflection arc plate to reciprocate within the inner spherical surface. Another part of the diffused microwave, under the action of the reciprocating displacement reflection arc plate, has different reciprocating displacement reflection points on the food to be heated, cyclically heating the entire food to be heated and improving the overall heating rate of the food.

[0009] Furthermore, the reflection mechanism further includes an arc frame, a first arc plate, a second arc plate, and a reflection arc plate. The fork-shaped connecting rod frame is provided with a sliding column, and the sliding column is arranged at the intersection point on the fork-shaped connecting rod frame. The arc frame is provided with an arc-shaped sliding groove, and the sliding column is slidably connected to the arc-shaped sliding groove. The first arc plate and the second arc plate are both rotatably connected to the arc frame. The first arc plate and the second arc plate are both hinged to the fork-shaped connecting rod frame. The reflection arc plate is fixedly connected to the arc frame.

[0010] The servo motor outputs reciprocating fixed-axis torque. The first arc arm and the second arc arm rotate in opposite directions. Through the reciprocating synchronous reverse rotation of the first arc arm and the second arc arm, the fork-shaped connecting rod frame reciprocates to open and close. The first arc plate and the second arc plate are both hinged and assembled with the fork-shaped connecting rod frame. The fork-shaped connecting rod frame drives the first arc plate and the second arc plate to reciprocate to open and close. The sliding column and the arc-shaped chute reciprocate relative to each other. The arc-shaped frame is within the vertical cross-section of the inner cavity body, driving the reflecting arc plate to reciprocate in an arc along the circular edge of the inner spherical surface.

[0011] Furthermore, the regulating mechanism further includes a pulley, a reversing cylinder, and an inner sleeve. The output end of the servo motor is fixedly connected to the pulley. The pulley is connected to the reversing cylinder and the inner sleeve through belt drives respectively. The reversing cylinder is rotationally connected to the inner cavity body. The reversing cylinder is connected to the outer sleeve through a belt drive. The inner sleeve is rotationally connected to the outer sleeve.

[0012] The servo motor outputs reciprocating fixed-axis torque to the pulley. The pulley transmits synchronous torque to the inner sleeve and the reversing cylinder through the belt. The reversing cylinder transmits reverse torque to the outer sleeve. The torques of the inner sleeve and the outer sleeve are the same, but the rotation directions are opposite, driving the first arc arm and the second arc arm to rotate with the same torque in opposite directions.

[0013] Furthermore, the rotating mechanism further includes a gear rod and a placement tray. There is a second top hole on the base platform. The driving motor is fixedly connected to the base platform. The output end of the driving motor is fixedly connected to the gear rod. There is a ring gear groove on the turntable. The gear rod meshes with the tooth surface of the ring gear groove. The turntable is rotationally connected to the second top hole. The placement tray is fixedly connected to the turntable.

[0014] The driving motor outputs fixed-axis torque to the gear rod. Through the meshing of the tooth surface between the gear rod and the ring gear groove, the torque is transmitted to the turntable, driving the turntable to rotate self in the second top hole, and driving the food to rotate self during heating through the fixedly assembled placement tray, so that the food to be heated is fully heated.

[0015] Furthermore, the hot air mechanism further includes a metal heating pipe and a wind guiding partition. The metal heating pipe is fixedly connected to the hot air motor, the catalyst chamber, and the wind guiding partition.

[0016] The hot air motor provides hot air into the inner cavity body through the metal heating pipe and the catalyst chamber, avoiding the interference of the metal powder substances in the catalyst chamber on the microwave, improving the microwave efficiency. The wind path is optimized through the wind guiding partition, and the hot air of the metal heating pipe directly acts on the surface of the catalyst, achieving a better air purification effect in the furnace chamber.

[0017] Furthermore, the cooling mechanism includes a cooling fan, a transformer, an air outlet pipe, and a magnetron. The cooling fan, the transformer, and the air outlet pipe are all fixedly connected to the outer frame body. The magnetron is fixedly connected to the air outlet pipe.

[0018] The cooling fan is controlled by a transformer to provide cold air into the inner cavity body, and the magnetron controls the discharge amount of the air outlet pipe, accelerating the flow of the cooling air path, so that the temperature of the electronic components can work within the allowable range.

[0019] Further, the micro-motion mechanism further includes a micro-switch, a spring and a pressing member. The micro-switch is fixedly connected to both the mounting plate and the spring. The pressing member is fixedly connected to the spring, and the pressing member is hinged to the door hinge.

[0020] When the door assembly is assembled with the door hinge and the furnace door is in the closed state, the contacts of the micro-switch are successively controlled to close by the pressing member, and the stroke of the spring is compressed. When the door assembly is opened, the door hinge leaves the surface of the pressing member, and the spring pushes open the pressing member, so that the contacts of the micro-switch are opened, reducing the deviation of the microwave leakage amount during the operation of the device, and greatly reducing the maximum microwave leakage amount.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention designs an inner cavity mechanism. The food to be heated is placed in the inner cavity body. During heating, the control panel sends an electrical signal to the drive motor. The drive motor outputs a fixed-axis torque to drive the food to be heated to rotate. The waveguide box emits microwaves to the food to be heated. After the microwaves impact and heat the food, they diffuse in all directions. Part of them are reflected by the inner spherical surface of the side wall of the inner cavity body and heat the food again. The servo motor outputs a reciprocating fixed-axis torque. The first arc arm and the second arc arm rotate in opposite directions. Through the reciprocating synchronous reverse rotation of the first arc arm and the second arc arm, the fork-shaped connecting rod frame reciprocates to open and close. The first arc plate and the second arc plate are both hinged and assembled with the fork-shaped connecting rod frame. The fork-shaped connecting rod frame drives the first arc plate and the second arc plate to reciprocate to open and close. The sliding column and the arc-shaped chute move relatively reciprocally. The arc frame is in the vertical section of the inner cavity body, driving the reflecting arc plate to reciprocate in an arc along the circular edge of the inner spherical surface. Under the action of the reciprocatingly displaced reflecting arc plate, the reflection landing points of the other part of the diffused microwaves are at different reciprocating displacements on the food to be heated, heating the food to be heated as a whole in a cycle and improving the overall heating rate of the food; The present invention designs a micro-motion mechanism. When the door assembly is assembled with the door hinge and the furnace door is in the closed state, the contacts of the micro-switch are successively controlled to close by the pressing member, and the stroke of the spring is compressed. When the door assembly is opened, the door hinge leaves the surface of the pressing member, and the spring pushes open the pressing member, so that the contacts of the micro-switch are opened, reducing the deviation of the microwave leakage amount during the operation of the device, and greatly reducing the maximum microwave leakage amount; The present invention simultaneously generates hot air and microwaves to heat the food, accelerating the flow of the cooling air path in the outer frame body, so that the temperature of the electronic components can work within the allowable range. The furnace accessories can be placed on the top rack, reducing the deviation of the microwave leakage amount during the operation of the device, and greatly reducing the maximum microwave leakage amount. When heating the food, the inner cavity body is recycled and directionally reflected, greatly improving the food heating rate and effectively reducing the energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the overall structural schematic diagram of the present invention;

[0023] Figure 2 Schematic diagram of the internal structure of the present invention;

[0024] Figure 3 Schematic diagram of the structure of the inner bore mechanism of the present invention;

[0025] Figure 4 Schematic diagram of the structure of the reflection mechanism of the present invention;

[0026] Figure 5 Schematic diagram of the structure of the regulation mechanism of the present invention;

[0027] Figure 6 Schematic diagram of the structure of the rotary mechanism of the present invention;

[0028] Figure 7 Side view of the overall structure of the present invention;

[0029] Figure 8 is Figure 2 Enlarged schematic diagram of the partial A of

[0030] Figure 9 is Figure 7 Enlarged schematic diagram of the partial B of

[0031] In the figure: 1, control panel; 2, outer frame; 21, top frame; 3, door assembly; 4, inner bore mechanism; 41, inner bore body; 411, inner spherical surface; 412, flange hole; 413, first top hole; 414, bottom hole; 42, hole plate; 43, circulation pipe; 44, reflection mechanism; 441, fork-shaped link frame; 4411, sliding column; 442, arc frame; 4421, arc chute; 443, first arc plate; 444, second arc plate; 445, reflection arc plate; 45, regulation mechanism; 451, servo motor; 452, pulley; 453, reverse cylinder; 454, inner sleeve; 455, outer sleeve; 456, first arc arm; 457, second arc arm; 46, rotary mechanism; 461, bottom table; 4611, second top hole; 462, drive motor; 463, turntable; 4631, ring tooth groove; 464, gear rod; 465, storage tray; 5, hot air mechanism; 51, hot air motor; 52, metal heating tube; 53, catalyst chamber; 54, air guide partition; 55, waveguide box; 6, cooling mechanism; 61, cooling fan; 62, transformer; 63, air outlet pipe; 64, magnetron; 7, micro-motion mechanism; 71, mounting plate; 72, door hinge; 73, micro-switch; 74, spring; 75, pressing part. Detailed implementation mode

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] As Figure 1 、 Figure 2 、 Figure 7 shown, the technical solution of a hot air circulation type microwave rapid oven provided by the present invention includes a control panel 1, an outer frame body 2, a door assembly 3, an inner cavity mechanism 4, a hot air mechanism 5, a cooling mechanism 6, and a micro-motion mechanism 7. The inner cavity mechanism 4 includes an inner cavity body 41 and a circulation pipe 43. The hot air mechanism 5 includes a hot air motor 51, a catalyst chamber 53, and a waveguide box 55. The micro-motion mechanism 7 includes a mounting plate 71 and a door hinge 72. The control panel 1, the inner cavity body 41, the hot air motor 51, the cooling mechanism 6, and the mounting plate 71 are all fixedly connected to the outer frame body 2. The circulation pipe 43 is fixedly connected to the catalyst chamber 53. A first top hole 413 is provided on the inner cavity body 41, and the first top hole 413 is located below the waveguide box 55. The door assembly 3 is fixedly connected to the door hinge 72. A top bracket 21 is provided on the outer frame body 2, and the top bracket 21 is located at the top of the outer frame body 2. The inner cavity mechanism 4 is electrically connected to the control panel 1 through an electrical signal.

[0034] The present invention is a rapid oven that combines hot air and microwave to heat food simultaneously. The food to be heated is placed in the inner cavity body 41. The heating time is set through the control panel 1. The hot air motor 51 generates hot air, and the waveguide box 55 generates microwaves to heat the food to be heated in the inner cavity body 41. The cooling mechanism 6 accelerates the flow of the cooling air path in the outer frame body 2, so that the temperature of the electronic components can work within the allowable range. The furnace accessories can be placed on the top bracket 21. When the door assembly 3 is opened and closed, the micro-motion mechanism 7 is driven through the door hinge 72, so that the deviation of the microwave leakage amount during the operation of the equipment is reduced, and the maximum microwave leakage amount is greatly reduced. When heating food, the inner cavity body 41 is recycled and directionally reflected, so that the food heating rate is greatly improved and the energy consumption is effectively reduced.

[0035] As Figure 3 、 Figure 4As shown, the inner chamber mechanism 4 further includes an orifice plate 42, a reflection mechanism 44, a regulation mechanism 45 and a rotation mechanism 46. The inner chamber body 41 is further provided with an inner spherical surface 411, a flange hole 412 and a bottom hole 414. The inner spherical surface 411 is provided on the side wall of the inner chamber body 41. The orifice plate 42 is fixedly connected to both the flange hole 412 and the circulation pipe 43. The reflection mechanism 44 includes a fork-shaped link frame 441. The regulation mechanism 45 includes a servo motor 451, an outer sleeve 455, a first arc arm 456 and a second arc arm 457. The rotation mechanism 46 includes a bottom platform 461, a drive motor 462 and a turntable 463. The servo motor 451 and the bottom platform 461 are both fixedly connected to the inner chamber body 41. The outer sleeve 455 is rotatably connected to the first top hole 413. The turntable 463 is rotatably connected to the bottom hole 414. The fork-shaped link frame 441 is hinged to both the first arc arm 456 and the second arc arm 457. The servo motor 451 and the drive motor 462 are both electrically connected to the control panel 1 through electrical signals.

[0036] Place the food to be heated in the inner chamber body 41. During heating, the control panel 1 sends an electrical signal to the drive motor 462. The drive motor 462 outputs a fixed-axis torque to drive the food to be heated to rotate. The waveguide box 55 emits microwaves to the food to be heated. After the microwaves impact and heat the food, they diffuse in all directions. Part of them are reflected by the inner spherical surface 411 on the side wall of the inner chamber body 41 and heat the food again. The servo motor 451 outputs a reciprocating fixed-axis torque to drive the fork-shaped link frame 441 to open and close, so that the reflection arc plate 445 reciprocates within the inner spherical surface 411. Another part of the diffused microwaves, under the action of the reciprocating displacement reflection arc plate 445, have reflection landing points at different reciprocating displacements on the food to be heated, and the food to be heated is heated in a whole cycle, improving the overall heating rate of the food.

[0037] As Figure 4 shown, the reflection mechanism 44 further includes an arc frame 442, a first arc plate 443, a second arc plate 444 and a reflection arc plate 445. The fork-shaped link frame 441 is provided with a sliding column 4411. The sliding column 4411 is provided at the intersection point on the fork-shaped link frame 441. The arc frame 442 is provided with an arc chute 4421. The sliding column 4411 is slidably connected to the arc chute 4421. The first arc plate 443 and the second arc plate 444 are both rotatably connected to the arc frame 442. The first arc plate 443 and the second arc plate 444 are both hinged to the fork-shaped link frame 441. The reflection arc plate 445 is fixedly connected to the arc frame 442.

[0038] The servo motor 451 outputs a reciprocating fixed-axis torque. The first arc arm 456 and the second arc arm 457 rotate in opposite directions. Through the reciprocating synchronous and opposite-direction rotation of the first arc arm 456 and the second arc arm 457, the fork-shaped connecting rod frame 441 reciprocates to open and close. The first arc plate 443 and the second arc plate 444 are both hinged and assembled with the fork-shaped connecting rod frame 441. The fork-shaped connecting rod frame 441 drives the first arc plate 443 and the second arc plate 444 to reciprocate to open and close. The sliding column 4411 and the arc-shaped chute 4421 displace relative to each other reciprocally. The arc-shaped frame 442 is within the vertical cross-section of the inner cavity body 41, driving the reflecting arc plate 445 to reciprocate in an arc along the circular edge of the inner spherical surface 411.

[0039] As Figure 5 shown in the figure, the regulating mechanism 45 further includes a pulley 452, a reversing cylinder 453, and an inner sleeve 454. The output end of the servo motor 451 is fixedly connected to the pulley 452. The pulley 452 is connected to the reversing cylinder 453 and the inner sleeve 454 through belt drives. The reversing cylinder 453 is rotationally connected to the inner cavity body 41. The reversing cylinder 453 is connected to the outer sleeve 455 through a belt drive. The inner sleeve 454 is rotationally connected to the outer sleeve 455.

[0040] The servo motor 451 outputs a reciprocating fixed-axis torque to the pulley 452. The pulley 452 transmits synchronous torque to the inner sleeve 454 and the reversing cylinder 453 through the belt. The reversing cylinder 453 transmits reverse torque to the outer sleeve 455. The torques of the inner sleeve 454 and the outer sleeve 455 are the same, but the rotation directions are opposite, driving the first arc arm 456 and the second arc arm 457 to rotate with the same torque and in opposite directions.

[0041] As Figure 6 shown in the figure, the rotary mechanism 46 further includes a gear rod 464 and a placement tray 465. The base 461 is provided with a second top hole 4611. The driving motor 462 is fixedly connected to the base 461. The output end of the driving motor 462 is fixedly connected to the gear rod 464. The turntable 463 is provided with an annular tooth groove 4631. The gear rod 464 meshes with the tooth surface of the annular tooth groove 4631. The turntable 463 is rotationally connected to the second top hole 4611. The placement tray 465 is fixedly connected to the turntable 463.

[0042] The driving motor 462 outputs a fixed-axis torque to the gear rod 464. Through the meshing of the tooth surface between the gear rod 464 and the annular tooth groove 4631, the torque is transmitted to the turntable 463, driving the turntable 463 to rotate self in the second top hole 4611, and driving the food to rotate self during heating through the fixedly assembled placement tray 465, so that the food to be heated is fully heated.

[0043] As Figure 7 shown in the figure, the hot air mechanism 5 further includes a metal heating tube 52 and a wind guiding partition 54. The metal heating tube 52 is fixedly connected to the hot air motor 51, the catalyst chamber 53, and the wind guiding partition 54.

[0044] The hot air motor 51 supplies hot air into the inner cavity body 41 through the metal heating pipe 52 and the catalyst chamber 53, avoiding the interference of the metal powder substance in the catalyst chamber 53 on the microwave, improving the microwave efficiency, optimizing the air path through the air guiding partition plate 54, and directly acting the hot air of the metal heating pipe 52 on the catalyst surface, which has a better air purification effect on the air in the furnace chamber.

[0045] As Figure 7 、 Figure 8 shown, the cooling mechanism 6 includes a cooling fan 61, a transformer 62, an air outlet pipe 63 and a magnetron 64. The cooling fan 61, the transformer 62 and the air outlet pipe 63 are all fixedly connected to the outer frame body 2, and the magnetron 64 is fixedly connected to the air outlet pipe 63.

[0046] The transformer 62 controls the cooling fan 61 to supply cold air into the inner cavity body 41, and the magnetron 64 controls the discharge amount of the air outlet pipe 63, accelerating the flow of the cooling air path, so that the temperature of the electronic components can work within the allowable range.

[0047] As Figure 9 shown, the micro-motion mechanism 7 further includes a micro-switch 73, a spring 74 and a pressing member 75. The micro-switch 73 is fixedly connected to both the mounting plate 71 and the spring 74, the pressing member 75 is fixedly connected to the spring 74, and the pressing member 75 is hinged to the door hinge 72.

[0048] When the door assembly 3 is assembled with the door hinge 72 and the furnace door is in the closed state, the contacts of the micro-switch 73 are controlled to close successively through the pressing member 75, and the stroke of the spring 74 is compressed. When the door assembly 3 is opened, the door hinge 72 leaves the surface of the pressing member 75, and the spring 74 pushes the pressing member 75 open, so that the contacts of the micro-switch 73 are opened, reducing the deviation of the microwave leakage amount during the operation of the equipment and greatly reducing the maximum microwave leakage amount.

[0049] Working principle of the present invention: Place the food to be heated into the inner cavity body 41, set the heating time through the control panel 1, generate hot air through the hot air motor 51, generate microwaves through the waveguide box 55, and heat the food to be heated in the inner cavity body 41. Accelerate the flow of the cooling air path in the outer frame body 2 through the cooling mechanism 6, so that the temperature of the electronic components can work within the allowable range. The furnace accessories can be placed on the top rack 21. The door assembly 3 is equipped with a door hinge 72. In the state where the furnace door is closed, press the pressing member 75 to control the contact of the microswitch 73 to close successively, and compress the stroke of the spring 74. When the door assembly 3 is opened, the door hinge 72 leaves the surface of the pressing member 75, and the spring 74 pushes open the pressing member 75 to open the contact of the microswitch 73, reducing the deviation of the microwave leakage amount during the operation of the device and greatly reducing the maximum microwave leakage amount. When heating the food, the control panel 1 sends an electrical signal to the drive motor 462, and the drive motor 462 outputs a fixed-axis torque to drive the food to be heated to rotate. The waveguide box 55 emits microwaves to the food to be heated. After the microwaves impact and heat the food, they diffuse in all directions. A part of them is reflected by the inner spherical surface 411 on the side wall of the inner cavity body 41 and heats the food again. The servo motor 451 outputs a reciprocating fixed-axis torque. The first arc arm 456 and the second arc arm 457 rotate in opposite directions. Through the reciprocating synchronous and opposite rotation of the first arc arm 456 and the second arc arm 457, the fork-shaped connecting rod frame 441 reciprocates to open and close. The first arc plate 443 and the second arc plate 444 are both hinged and assembled with the fork-shaped connecting rod frame 441. The fork-shaped connecting rod frame 441 drives the first arc plate 443 and the second arc plate 444 to reciprocate to open and close. The sliding column 4411 and the arc chute 4421 displace relatively reciprocally. The arc frame 442 is in the vertical cross-section of the inner cavity body 41, driving the reflecting arc plate 445 to reciprocate in an arc along the circular edge of the inner spherical surface 411. Under the action of the reciprocating displacement reflecting arc plate 445, the other part of the diffused microwaves has different reciprocating displacements in the falling points on the food to be heated, circularly heating the whole food to be heated, improving the overall heating rate of the food, performing circular recycling and directional reflection on the inner cavity body 41, greatly improving the food heating rate, and effectively reducing the energy consumption.

[0050] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A hot air circulation microwave fast oven, characterized in that: The oven comprises a control panel (1), an outer frame (2), a door assembly (3), an inner chamber mechanism (4), a hot air mechanism (5), a cooling mechanism (6) and a micro-motion mechanism (7); the inner chamber mechanism (4) comprises an inner chamber body (41) and a circulation pipe (43); the hot air mechanism (5) comprises a hot air motor (51), a catalyst chamber (53) and a waveguide box (55); the micro-motion mechanism (7) comprises a mounting plate (71) and a door hinge (72); the control panel (1), the inner chamber body (41), the hot air motor (51), The cooling mechanism (6) and the mounting plate (71) are both fixedly connected to the outer frame (2); the circulation pipe (43) is fixedly connected to the catalyst chamber (53); a first top hole (413) is provided on the inner chamber (41); the first top hole (413) is arranged below the waveguide box (55); the door assembly (3) is fixedly connected to the door hinge (72); a top frame (21) is provided on the outer frame (2); the top frame (21) is arranged at the top of the outer frame (2); and the inner chamber mechanism (4) is connected to the control panel (1) via an electrical signal.

2. A hot air circulation type microwave fast oven according to claim 1, characterized in that: The inner bore mechanism (4) further comprises an orifice plate (42), a reflection mechanism (44), a regulating mechanism (45) and a rotating mechanism (46); the inner bore body (41) is further provided with an inner spherical surface (411), a flange hole (412) and a bottom hole (414); the inner spherical surface (411) is arranged on the side wall of the inner bore body (41); the orifice plate (42) is fixedly connected to the flange hole (412) and the circulation pipe (43); the reflection mechanism (44) comprises a fork-shaped connecting rod frame (441); the regulating mechanism (45) comprises a servo motor (451), an outer sleeve (455), a first arc arm (456) and The second arc arm (457), the rotating mechanism (46) includes a base (461), a drive motor (462) and a turntable (463), the servo motor (451) and the base (461) are fixedly connected to the inner body (41), the outer sleeve (455) is rotatably connected to the first top hole (413), the turntable (463) is rotatably connected to the bottom hole (414), the fork-shaped connecting rod frame (441) is hinged to the first arc arm (456) and the second arc arm (457), and the servo motor (451) and the drive motor (462) are connected to the control panel (1) through electrical signals.

3. A hot air circulation type microwave fast oven according to claim 2, characterized in that: The reflection mechanism (44) further comprises an arc frame (442), a first arc plate (443), a second arc plate (444) and a reflection arc plate (445); a sliding column (4411) is provided on the fork-type connecting rod frame (441); the sliding column (4411) is arranged at an intersection on the fork-type connecting rod frame (441); an arc sliding groove (4421) is provided on the arc frame (442); the sliding column (4411) is slidably connected to the arc sliding groove (4421); the first arc plate (443) and the second arc plate (444) are both rotatably connected to the arc frame (442); the first arc plate (443) and the second arc plate (444) are both hinged to the fork-type connecting rod frame (441); and the reflection arc plate (445) is fixedly connected to the arc frame (442).

4. The hot air circulation type microwave fast oven according to claim 3, characterized in that: The regulating mechanism (45) further comprises a pulley (452), a reversing cylinder (453) and an inner sleeve (454); the output end of the servo motor (451) is fixedly connected to the pulley (452); the pulley (452) and the reversing cylinder (453) and the inner sleeve (454) are all connected via a belt transmission; the reversing cylinder (453) is rotationally connected to the inner chamber body (41); the reversing cylinder (453) is connected to the outer sleeve (455) via a belt transmission; and the inner sleeve (454) is rotationally connected to the outer sleeve (455).

5. The hot air circulation type microwave fast oven according to claim 3, characterized in that: The rotary mechanism (46) further comprises a gear rod (464) and a storage tray (465); a second top hole (4611) is provided on the base (461); the drive motor (462) is fixedly connected to the base (461); the second top hole (4611) is provided on the base (461); the output end of the drive motor (462) is fixedly connected to the gear rod (464); an annular tooth groove (4631) is provided on the turntable (463); the gear rod (464) and the tooth surface of the annular tooth groove (4631) are meshed; the turntable (463) is rotatably connected to the second top hole (4611); and the storage tray (465) is fixedly connected to the turntable (463).

6. The hot air circulation type microwave fast oven according to claim 1, characterized in that: The hot air mechanism (5) further comprises a metal heating pipe (52) and an air guide baffle (54); the metal heating pipe (52) is fixedly connected to the hot air motor (51), the catalyst chamber (53), and the air guide baffle (54).

7. The hot air circulation type microwave fast oven according to claim 1, characterized in that: The cooling mechanism (6) comprises a cooling fan (61), a transformer (62), an air outlet pipe (63) and a magnetron (64); the cooling fan (61), the transformer (62) and the air outlet pipe (63) are all fixedly connected to the outer frame (2); and the magnetron (64) is fixedly connected to the air outlet pipe (63).

8. The hot air circulation type microwave fast oven according to claim 1, characterized in that: The micro-motion mechanism (7) further comprises a micro-switch (73), a spring (74) and a pressing piece (75); the micro-switch (73) is fixedly connected to the mounting plate (71) and the spring (74); the pressing piece (75) is fixedly connected to the spring (74); and the pressing piece (75) is hinged to the door hinge (72).

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