Multi-runner air fryer

Abstract

The invention relates to a multi-runner air fryer, and aims to solve the technical problems of low energy efficiency and non-uniform energy distribution caused by lack of air guide bending design and flow guide plate arrangement at a hot air outlet position in a machine body of an existing similar product and inclined arrangement of an impeller. The air fryer is characterized in that a back opening at one end of a metal heat insulation top cover of the air fryer is connected with the top of a cover opening of a channel flow collecting cover into a whole, and the cover opening below the channel flow collecting cover at the joint is connected with the back of a metal heat insulation lining of a metal heat insulation cover into a whole; a flow guide plate which extends and protrudes forwards and is formed by stamping is arranged at a top hole opening of the metal heat insulation lining below a cover opening of the metal heat insulation top cover; pot through holes which are distributed at equal intervals are formed in one side of a pot body at the fryer assembly in front of a plate through hole of the metal heat insulation lining; an inner through hole in one side of the back of an inner pot of the fryer assembly is aligned with the pot through hole of the pot body, and a side wall channel gap and a bottom channel gap are formed; the heat dissipation impeller in the bidirectional flow collecting cover and the hot air impeller in the channel flow collecting cover are parallel and are perpendicular to the plane of a cover opening in an inclined mode.

Description

Technical Field

[0001] The invention relates to an air fryer, in particular to a multi-channel air fryer. Background Art

[0002] An air fryer is a new type of household appliance that uses high-speed air circulation technology to fry food. The food it makes can reduce 80% of the fat compared to traditional electric fryers. It is easy to clean in daily use, safe and economical, and is favored by people. However, traditional air fryers generally adopt a top blowing design, and the hot air only acts on the surface of the food. There is no high-temperature hot air on the back side. In order to heat the food evenly, the food needs to be turned over during the cooking process, which leads to uneven energy distribution. For example, the application number 202410837162.4 disclosed in the Chinese patent literature, the application publication date 2024.08.23, the invention name "back-blowing air fryer"; other back-blowing air fryers have the problem of low energy efficiency of air fryers with hot air coming out from the back, that is, this type of air fryer with back air outlet has a large amount of fluid hitting the inner wall of the air fryer after the fluid is thrown out from the centrifugal fan blade, resulting in serious loss of fluid kinetic energy, resulting in low energy efficiency, and the head occupies a large space. The above two air fryers are rather bulky in shape, with the motor and cooling system on the top occupying a large volume, making the product look rather bulky. Summary of the invention

[0003] In order to overcome the above shortcomings, the purpose of the present invention is to provide a multi-channel air fryer in the art, which can solve the technical problems of the existing similar products, such as the lack of wind guide bending design and guide plate setting at the hot air outlet of the machine body, and the inclined setting of the impeller, resulting in low energy efficiency, uneven energy distribution, and large head space occupied in the machine body structure design. The purpose is achieved through the following technical solutions.

[0004] A multi-channel air fryer, wherein a metal heat insulation cover is arranged in the body of the air fryer, the inner diameter of an opening on one side of the body is covered by the metal heat insulation cover to form a hardware heat insulation layer, and a hot air mechanism with an impeller and a heat dissipation mechanism are arranged in sequence on the back of the metal heat insulation cover; the key points of its structural design are that the metal heat insulation cover comprises a metal heat insulation top cover and a metal heat insulation lining, the front part of one end of the metal heat insulation top cover on the top of the metal heat insulation cover is bent downward, the back opening of the other end of the metal heat insulation top cover is connected to the top of the cover opening of the channel collecting cover as a whole, the cover opening below the channel collecting cover at the connection is connected to the back of the metal heat insulation lining of the metal heat insulation cover, the back of the metal heat insulation lining at the connection is provided with plate through holes distributed at equal intervals, and the cover of the metal heat insulation top cover is provided with a metal heat insulation cover. The top opening of the metal heat-insulating lining below the opening is provided with a guide plate that is protruding forward and formed by stamping. The frying pan assembly in front of the plate through hole of the metal heat-insulating lining is provided with equidistantly distributed pan through holes on one side of the pot body; the channel collector on the back of the metal heat-insulating lining is provided with a heating pipe and a hot air impeller, the two-way collector on the back of the channel collector is provided with a heat dissipation impeller, the motor shaft at the motor on the back of the two-way collector is simultaneously connected to the heat dissipation impeller in the two-way collector and the hot air impeller in the channel collector, the heating pipe and the motor are connected to the control circuit board through the line; the motor is a forward and reverse motor, the hot air outlet of the two-way collector is provided with exhaust holes, and the central hole in the middle of the two-way collector where the motor is installed is the cold air inlet. The above-mentioned heat dissipation impeller is used as the main heat dissipation component of the heat dissipation mechanism, and the hot air impeller is used as the main hot air layout of the hot air mechanism.

[0005] The pot body of the fryer assembly is provided with an inner pot, the inner through hole on the back side of the inner pot is aligned with the pot through hole of the pot body, and the end of the metal insulation top cover at the downward bending part of the front part and the end of the guide plate of the metal insulation lining below the metal insulation top cover are located above the inner wall of the pot mouth on the side of the inner pot handle of the fryer assembly. The mainstream channel of the air fryer is composed of the metal insulation top cover and the guide plate. The main function of the mainstream channel is to control the flow direction of the fluid so that the fluid flows according to a predetermined trajectory. At the same time, the mainstream channel is narrowed at the downward bending part of the front part of the metal insulation top cover to accelerate the fluid, thereby reducing the turbulent diameter and allowing the food to be heated more evenly. The mainstream channel divides the fluid into an upper shunt and a lower shunt through the fluid channel separated by the inner pot in the pot body to provide energy for the front and back sides of the food; wherein, the mainstream channel provides power for the shunt, the upper shunt is for the upper surface of the food to be heated, and the lower shunt is for the lower surface of the food to be heated.

[0006] The guide plate of the metal insulation lining is provided with downwardly curved inclined surfaces at both ends, the middle arch of the guide plate is located in the upper metal insulation top cover, and the downwardly curved side ears on both sides of the middle of the guide plate are symmetrically provided with fixing holes at both ends, and the guide plate of the metal insulation lining is fixed to the inner walls on both sides of the upper metal insulation top cover through the fixing holes.

[0007] A side wall channel gap is provided between the inner pot of the fryer assembly and the pot body on one side of the handle, and a bottom channel gap is provided between the bottom of the inner pot and the inner bottom of the pot body.

[0008] The heat dissipation impeller in the bidirectional collecting cover and the hot air impeller in the channel collecting cover are parallel and perpendicular to the plane at the cover opening and are inclined at 1-15. The best inclined angle is 6 degrees. The inclined impeller is mainly to improve the fluid efficiency and avoid excessive fluid from impacting the top surface of the air fryer during the transmission process, resulting in a large fluid loss.

[0009] The bidirectional collecting cover is replaced by a unidirectional collecting cover, the hot air outlet with a worm-shaped protrusion on one side of the unidirectional collecting cover is aligned and connected with the exhaust hole of the machine body, and the central hole in the middle of the unidirectional collecting cover where a motor is installed is a cold air inlet.

[0010] The middle of the channel collector is provided with an impeller groove that is stamped and convex toward the back, and a heating tube is provided in the rectangular square groove that is stamped above the impeller groove. The top of the square groove of the channel collector is stamped downward to communicate with the top of the impeller groove below. The top of the channel collector at the communicating part is aligned with the notch on the back side of the metal heat-insulating top cover. At the same time, cover through holes are symmetrically provided on both sides of the top of the channel collector at the communicating part, and the end corner of the square groove on one side of the impeller groove of the channel collector is provided with an external installation hole for the heating tube. The channel collector of the above structure plays the role of collecting flow and reducing turbulence, which is crucial to product performance; the two cover through holes of the channel collector serve as air outlets to ensure smooth exhaust when the impeller is rotating forward or reverse.

[0011] An inserted NTC temperature sensor is arranged on the top of the channel collecting cover, and the NTC temperature sensor is connected to the control circuit board through a line.

[0012] The heating pipe is arranged at the outer diameter of the hot air impeller in the channel collecting cover or at the front of the hot air impeller, and the heating pipe is in the form of a circular ring or a square ring.

[0013] The heat dissipation impeller is a plastic cross-flow impeller, and the hot air impeller is a multi-blade radial centrifugal impeller. The heat dissipation and hot air effects of the impellers are better.

[0014] The metal insulation lining of the metal insulation cover is provided with a metal insulation bottom plate, and the metal insulation bottom plate, the metal insulation lining and the metal insulation top cover are connected as a whole to form a metal insulation cover with an opening on one side of the fryer assembly. The above is an embodiment of the connection method of the metal insulation lining and the metal insulation bottom plate, and the two can also be formed in one piece.

[0015] The metal heat-insulating top cover is provided with a raised brim at the downwardly bent front part, and a top cover upper through hole is provided at the brim at the opening of the machine body, and the top cover upper through hole is aligned and communicated with the fryer upper through hole at the cover shell of the fryer assembly, and the fryer lower through hole at the cover shell of the fryer assembly is aligned and communicated with the lower through hole at the bottom of the opening of the machine body, and the fryer lower through hole and the fryer upper through hole are respectively arranged at the upper and lower edges of the cover shell at the opening where the fryer assembly is placed in the opening of the machine body. The above structure facilitates the circulation of the cold air system in the air fryer and improves the heat dissipation effect.

[0016] The invention has reasonable structural design, convenient production and assembly, high energy efficiency, uniform energy distribution, and small space occupied by the head of the machine body; it is suitable for use as a multi-channel air fryer and a structural improvement of similar products. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the explosion structure of an embodiment of the present invention.

[0018] Figure 2 yes Figure 1 Schematic diagram of the sectional structure after assembly.

[0019] Figure 3 yes Figure 2 Schematic diagram of the internal structure of the three-dimensional structure.

[0020] Figure 4 yes Figure 1 Schematic diagram of the heat dissipation mechanism structure.

[0021] Figure 5 yes Figure 4 Schematic diagram of the three-dimensional structure of the bidirectional collecting cover.

[0022] Figure 6 yes Figure 1 Schematic diagram of the three-dimensional structure of the rear part of the channel collecting cover.

[0023] Figure 7 It is a schematic diagram of the three-dimensional structure of the one-way collecting cover of the present invention.

[0024] Serial number and name of the accompanying drawings: 1. Main body, 2. Metal insulation top cover, 3. Metal insulation lining, 301. Guide plate, 4. Fryer assembly, 401. Fryer body, 402. Inner pot, 5. Channel collector hood, 501. Hood through hole, 6. Hot air impeller, 7. Heating tube, 8. Metal insulation bottom plate, 9. Bottom shell, 10. Two-way collector hood, 11. Heat dissipation impeller, 12. Motor, 13. NTC temperature sensor, 14. One-way collector hood. Implementation

[0025] Now, the structure and use of the present invention will be further described in conjunction with the accompanying drawings. Figure 1-Figure 6As shown, a metal heat-insulating cover is provided in the body of the air fryer, and the body includes a main body 1 and a bottom shell 9. The inner diameter of the opening on one side of the body is covered with a metal heat-insulating cover to form a metal heat-insulating layer. The back of the metal heat-insulating cover is provided with a hot air mechanism with an impeller and a heat dissipation mechanism in sequence. The above-mentioned metal heat-insulating cover includes a metal heat-insulating top cover 2, a metal heat-insulating lining 3 and a metal heat-insulating bottom plate 8. The front of one end of the metal heat-insulating top cover at the top of the metal heat-insulating cover is bent downward, and the back opening of the other end of the metal heat-insulating top cover is connected to the top of the cover opening of the channel collector 5 as a whole. The cover opening below the channel collector at the connection is connected to the back of the metal heat-insulating lining of the metal heat-insulating cover. The back of the metal heat-insulating lining at the connection is provided with plate through holes distributed at equal intervals. The top opening of the metal heat-insulating lining below the cover opening of the metal heat-insulating top cover is provided with a guide plate 301 that is protruding forward and formed by stamping. The front of the plate through hole of the metal heat-insulating lining The frying pot assembly 4 is provided with equidistantly distributed pot through holes on one side of the pot body 401; the channel collector on the back of the metal heat-insulating lining is provided with a heating pipe 7 and a hot air impeller 6, the two-way collector 10 on the back of the channel collector is provided with a heat dissipation impeller 11, the motor shaft at the motor 12 on the back of the two-way collector is simultaneously connected to the heat dissipation impeller in the two-way collector and the hot air impeller in the channel collector, and the heating pipe and the motor are connected to the control circuit board through the line; the motor is a forward and reverse motor, and the hot air outlet of the two-way collector is provided with exhaust holes, and the central hole in the middle of the two-way collector where the motor is installed is the cold air inlet. A metal heat-insulating bottom plate is provided at the bottom shell of the main body, and the metal heat-insulating bottom plate, the metal heat-insulating lining and the metal heat-insulating top cover are connected as a whole to form a metal heat-insulating cover with an opening on one side of the frying pot assembly. A raised brim is provided at the downwardly bent front portion of the metal heat-insulating top cover, an upper through hole is provided at the brim at the opening of the machine body, the upper through hole of the top cover is aligned and communicated with the upper through hole of the fryer at the cover shell of the fryer assembly, the lower through hole of the fryer at the cover shell of the fryer assembly is aligned and communicated with the lower through hole of the machine body at the bottom of the opening, and the lower through hole of the fryer and the upper through hole of the fryer are respectively arranged at the upper and lower edges of the cover shell where the fryer assembly is placed in the opening of the machine body.

[0026] The pot body of the fryer assembly described above is provided with an inner pot 402, the inner through hole on the back side of the inner pot is aligned with the pot through hole of the pot body, the end of the downwardly bent front part of the metal heat-insulating top cover and the end of the guide plate of the metal heat-insulating lining below the metal heat-insulating top cover are located above the inner wall of the pot mouth on the handle side of the inner pot of the fryer assembly. At the same time, the guide plate of the metal heat-insulating lining is provided with downwardly bent inclined surfaces at both ends, the middle arch of the guide plate is located in the upper metal heat-insulating top cover, and the two sides of the middle of the guide plate are symmetrically provided with fixing holes at both ends of the downwardly bent side ears, and the guide plate of the metal heat-insulating lining is fixed to the inner walls on both sides of the upper metal heat-insulating top cover through the fixing holes. A side wall channel gap is provided between the inner pot of the fryer assembly and the pot body on the handle side, and a bottom channel gap is provided between the bottom of the inner pot and the bottom of the pot body.

[0027] The heat dissipation impeller in the bidirectional collector and the hot air impeller in the channel collector are parallel and perpendicular to the plane at the cover opening at a 6-degree angle. An impeller groove protruding toward the back is provided in the middle of the channel collector. A heating pipe is provided in the rectangular square groove formed by punching above the impeller groove. The top of the square groove of the channel collector is punched downward to communicate with the top of the impeller groove below. The top of the channel collector at the communication point is aligned with the notch on the back side of the metal insulation top cover. At the same time, the two sides of the top of the channel collector at the communication point are symmetrically provided with cover through holes 501. The end corner of the square groove on one side of the impeller groove of the channel collector is provided with an external installation hole for the heating pipe. An inserted NTC temperature sensor 13 is provided at the top of the channel collector, and the NTC temperature sensor is connected to the control circuit board through a line. The heating pipe is provided at the outer diameter of the hot air impeller in the channel collector or the front of the hot air impeller. The heating pipe is a circular ring or a square ring. The heat dissipation impeller is a plastic crossflow fan blade, and the hot air impeller is a multi-blade radial centrifugal impeller.

[0028] According to the above structural characteristics, such as Figure 7 As shown, the above-mentioned two-way collecting cover is replaced by a one-way collecting cover 14, and the hot air outlet with a worm-shaped protrusion on one side of the one-way collecting cover is aligned and connected with the exhaust hole of the body, and the central hole in the middle of the one-way collecting cover where the motor is installed is the cold air inlet.

[0029] When using, Figure 2 As shown, food is put into the inner pot of the fryer assembly, and the fryer assembly is put into the machine body, and the screen button above the opening of the machine body at the fryer assembly is started. The hot air in the machine body passes through the metal insulation top cover and then comes out, and is accelerated through the guide plate and the shrinkage at the downward bending part of the front part of the metal insulation top cover to enter the inner pot and the pot body of the inner pot outer diameter respectively, and is divided into upper and lower diversions to heat the food in the inner pot up and down, and then returns to the hot air impeller, and the heat is discharged from the machine body through the exhaust holes of the two-way collecting cover or the one-way collecting cover.

[0030] In summary, the air fryer solves the problem of flipping during the cooking process of the air fryer and improves the energy efficiency of the product; the flow channel in the machine body transports as much high-temperature fluid as possible to the surface of the food, the motor provides rotational power for the impeller and rotates forward and reverse (in order to solve the problem of uneven heating of French fries, a forward and reverse motor is used, and two air outlets are designed to ensure that the heat dissipation performance remains unchanged when the motor rotates forward or reverse), the hot air impeller mainly transfers energy to the food through forced convection; the heat dissipation impeller discharges the energy that cannot be absorbed by the food out of the air fryer to avoid excessive temperature rise of the whole machine; the temperature of the NTC temperature sensor maps the temperature of the center point of the cavity, thereby controlling the temperature of the center point of the cavity. The exhaust holes on both sides or one side of the machine body discharge steam, oil smoke and other substances generated in the air fryer out of the fryer; the cold air inlet passes the cold air outside the pot into the cold air system through this channel, and the heat that cannot be absorbed by the food is discharged out of the pot through the cold air.

Claims

1. A multi-channel air fryer, wherein a metal heat insulation cover is arranged in the body of the air fryer, the inner diameter of an opening on one side of the body is covered by the metal heat insulation cover to form a metal heat insulation layer, and a hot air mechanism with an impeller and a heat dissipation mechanism are arranged in sequence on the back of the metal heat insulation cover; characterized in that The metal heat insulation cover comprises a metal heat insulation top cover (2) and a metal heat insulation lining (3), wherein the front portion of one end of the metal heat insulation top cover at the top of the metal heat insulation cover is bent downward, and the back opening of the other end of the metal heat insulation top cover is connected to the top of the cover opening of the channel collector cover (5) as a whole, and the cover opening below the channel collector cover at the connection is connected to the back of the metal heat insulation lining of the metal heat insulation cover as a whole, and the back of the metal heat insulation lining at the connection is provided with plate through holes distributed at equal intervals, and the top opening of the metal heat insulation lining below the cover opening of the metal heat insulation top cover is provided with a guide plate (301) extending forward and protruding and formed by stamping, and the frying pan assembly (4) in front of the plate through hole of the metal heat insulation lining ) is provided with equidistantly distributed pot through holes on one side of the pot body (401); a heating pipe (7) and a hot air impeller (6) are provided in the channel collecting cover on the back of the metal heat-insulating lining, a heat dissipation impeller (11) is provided in the two-way collecting cover (10) on the back of the channel collecting cover, a motor shaft at the motor (12) on the back of the two-way collecting cover is simultaneously connected to the heat dissipation impeller in the two-way collecting cover and the hot air impeller in the channel collecting cover, and the heating pipe and the motor are connected to the control circuit board through a line; the motor is a forward and reverse motor, and exhaust holes are respectively provided on the body at the hot air outlet of the two-way collecting cover, and the central hole in the middle of the two-way collecting cover where the motor is installed is a cold air inlet.

2. The multi-channel air fryer according to claim 1, characterized in that The pot body (401) of the frying pot assembly (4) is provided with an inner pot (402), the inner through hole on the back side of the inner pot is aligned with the pot through hole of the pot body, and the end of the downwardly bent front part of the metal insulation top cover (2) and the end of the guide plate (301) of the metal insulation lining (3) below the metal insulation top cover are located above the inner wall of the pot opening on the side of the inner pot handle of the frying pot assembly.

3. The multi-channel air fryer according to claim 2, characterized in that The guide plate (301) of the metal thermal insulation lining (3) is provided with downwardly curved inclined surfaces at both ends, the middle arch of the guide plate is located in the upper metal thermal insulation top cover (2), and the side ears on both sides of the middle of the guide plate are bent downward and symmetrically provided with fixing holes at both ends, and the guide plate of the metal thermal insulation lining is fixed to the inner walls on both sides of the upper metal thermal insulation top cover through the fixing holes.

4. The multi-channel air fryer according to claim 2, characterized in that A side wall channel gap is provided between the inner pot (402) of the fryer assembly (4) and the pot body on one side of the handle, and a bottom channel gap is provided between the bottom of the inner pot and the inner bottom of the pot body.

5. The multi-channel air fryer according to claim 1, characterized in that The heat dissipation impeller (11) in the bidirectional collecting cover (10) and the hot air impeller (6) in the channel collecting cover (5) are parallel and perpendicular to the plane at the cover opening and inclined at an angle of 1-15 degrees.

6. The multi-channel air fryer according to claim 1, characterized in that The bidirectional collecting cover (10) is replaced by a unidirectional collecting cover (14), the hot air outlet of the worm-shaped protrusion on one side of the unidirectional collecting cover is aligned with and communicates with the exhaust hole of the machine body, and the central hole in the middle of the unidirectional collecting cover where the motor (12) is installed is the cold air inlet.

7. The multi-channel air fryer according to claim 1, characterized in that The channel collector (5) has an impeller groove protruding from the back by stamping in the middle, and a heating tube (7) is arranged in a rectangular square groove stamped above the impeller groove. The top of the square groove of the channel collector is stamped downward to be connected with the top of the impeller groove below. The top of the channel collector at the connection is aligned with the groove on the back side of the metal insulation top cover (2). Cover through holes (501) are symmetrically arranged on both sides of the top of the channel collector at the connection. A heating tube external mounting hole is arranged at the end corner of the square groove on one side of the impeller groove of the channel collector.

8. The multi-channel air fryer according to claim 1, characterized in that An inserted NTC temperature sensor (13) is provided on the top of the channel collecting cover (5), and the NTC temperature sensor is connected to the control circuit board via a line.

9. The multi-channel air fryer according to claim 1, characterized in that The heating pipe (7) is arranged on the outer diameter of the hot air impeller (6) in the channel collecting cover (5) or on the front part of the hot air impeller, and the heating pipe is in the form of a circular ring or a square ring.

10. The multi-channel air fryer according to claim 1, characterized in that The heat dissipation impeller (11) is a plastic cross-flow impeller, and the hot air impeller (6) is a multi-blade radial centrifugal impeller.

11. The multi-channel air fryer according to claim 1, characterized in that A metal insulation bottom plate (8) is provided at the bottom of the metal insulation lining (3) of the metal insulation cover, and the metal insulation bottom plate, the metal insulation lining and the metal insulation top cover (2) are connected as a whole to form a metal insulation cover with an opening on one side of the fryer assembly (4).

12. The multi-channel air fryer according to claim 1, characterized in that The metal heat-insulating top cover (2) is provided with a raised brim at the downwardly bent front portion, and a top cover upper through hole is provided at the brim at the opening of the machine body, the top cover upper through hole is aligned and communicated with the fryer upper through hole at the cover shell of the fryer assembly (4), the fryer lower through hole at the cover shell of the fryer assembly is aligned and communicated with the lower through hole at the bottom of the opening of the machine body, and the fryer lower through hole and the fryer upper through hole are respectively arranged at the upper and lower edges of the cover shell at the opening where the fryer assembly is placed in the opening of the machine body.

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