Air fryer and air fryer cooking method

Abstract

The invention discloses an air fryer and an air fryer cooking method. Comprising a base plate at the bottom and a fryer head opposite to the base plate, a head lifting device is arranged between the fryer head and the base plate, and the head lifting device can receive a control signal to lift the fryer head upwards. After the machine head lifting device is additionally arranged, the machine head can be opened through electric control so as to prevent scalding, and furthermore, a timing or controlled opening function can be set according to needs so as to realize automatic control.

Description

Technical Field

[0001] The invention relates to an air fryer and an air fryer cooking method. Background Art

[0002] The air fryer uses the fan on the head and high-temperature heating wire to exchange strong heat flow with the baking chamber under the head to heat the food. The temperature range is usually between 80℃ and 200℃. The air fryer has the advantages of being fast, healthy and convenient.

[0003] A drawer is generally provided in the baking chamber of an air fryer; the food is placed in the drawer, and after the food is heated, the drawer is pulled out from one side of the baking chamber and the food can be eaten. This method has a simple structure and low cost, and is widely welcomed.

[0004] However, this method is not conducive to automatic control. For example, some foods need to be taken out of the drawer immediately after being "fried" and cannot continue to be "stifled" in the baking chamber, otherwise the taste will be affected. If you open the drawer just after "frying", you may get burned. Furthermore, the automatic "cover opening" function cannot be realized. Summary of the invention

[0005] To overcome the above-mentioned defects, the object of the present invention is to provide a novel air fryer and an air fryer cooking method.

[0006] To achieve the above-mentioned purpose, the air fryer of the present invention comprises a fryer head; the fryer head comprises a heating unit and a baking cover integrally arranged below the heating unit, and a bottom plate is arranged below the fryer head corresponding to the lower opening of the baking cover;

[0007] A head lifting device is arranged between the fryer head and the chassis.

[0008] Furthermore, a grill mechanism is arranged above the chassis; a grill lifting device is arranged on the fryer head and / or the chassis; and the grill mechanism is arranged on the grill lifting device.

[0009] Furthermore, a flipping device is provided on the grill lifting device to flip the grill mechanism 180 degrees after it is lifted.

[0010] Furthermore, the grill lifting device is a passive grill lifting device; the passive grill lifting device comprises a grill slide rail installed on one side of the machine head lifting device, a grill slider is arranged on the grill slide rail, and the grill mechanism is installed on the grill slider;

[0011] The head lifting device is provided with a hook belt mechanism relative to the grill slider; after the head lifting device drives the fryer head to rise to a predetermined position, it drives the grill slider on the passive grill lifting device to rise along the slide rail.

[0012] Furthermore, the grill mechanism comprises a grill frame and a lifting frame;

[0013] The turning device comprises:

[0014] The lifting frame is installed on the grill lifting device; the two sides of the lifting frame are hinged to the centers of the two sides of the grill through hinge shafts, and the grill can be turned over in the lifting frame; the hinge shaft divides the grill into two parts, front and back;

[0015] A chassis turning axis or chassis turning hole is arranged at the center of both sides of the chassis corresponding to the hinge of the baking frame; a connecting rod is hinged at the chassis turning axis or the chassis turning hole; the other end of the connecting rod is hinged at the middle of the front half or the rear half of the baking frame on the same side.

[0016] Furthermore, the turning device comprises:

[0017] A driving shaft is hinged on the grill lifting device, one end of the driving shaft extends to one side inside the grill lifting device and is connected to the grill mechanism, and the other end extends to one side outside the grill lifting device and is hinged to an inverted L-shaped slider, the inverted L-shaped slider is composed of a support arm and a cylindrical slider arranged at the upper end of the support arm; a one-way transmission mechanism is arranged between the inverted L-shaped slider and the driving shaft;

[0018] A flip guide rail is vertically arranged corresponding to the inverted L-shaped slider, and a flip slide groove adapted to the cylindrical slider is arranged on the flip guide rail; the flip slide groove includes an upper vertical slide groove, an inverted Y-shaped flip slide groove and a lower vertical slide groove from top to bottom, and the inverted Y-shaped flip slide groove includes an upper inclined slide groove, a horizontal slide groove and a lower inclined slide groove that are connected; the upper end of the upper inclined slide groove is connected to the lower end of the upper vertical groove; the lower end of the lower inclined slide groove is connected to the lower vertical slide groove;

[0019] The cylindrical slider is slidably arranged in the slide groove; the length of the slide plate is adapted to the length of the upper inclined slide groove, the horizontal slide groove and the lower inclined slide groove;

[0020] The flipping process of the inverted L-shaped slider in the flip chute includes:

[0021] 1) Straight upward: When the grill lifting device drives the drive shaft to move upward from bottom to top, the inverted L-shaped slider moves upward along the lower vertical slide groove driven by the drive shaft. At this time, the inverted L-shaped slider is located directly above the drive shaft;

[0022] 2) Flip the first 45 degrees; when the inverted L-shaped slider moves upward to the lower inclined chute, the inverted L-shaped slider moves upward along the lower inclined chute and flips 45 degrees;

[0023] 3) Flip a second 45 degrees; the inverted L-shaped slider flips 45 degrees upward along the lower inclined chute and continues to slide into the horizontal chute for a second 45-degree flip; at this time, the inverted L-shaped slider is located in the horizontal chute; the hinged end of the drive shaft is located at the intersection of the Y-shaped flip chute;

[0024] 4) Flip a third 45 degrees; as the inverted L-shaped slider continues to move upward, the hinged end of the drive shaft drives the inverted L-shaped slider to slide up the inclined slide slot and flip a third 45 degrees; at this time, the inverted L-shaped slider is located behind the drive shaft;

[0025] 5) Flip the fourth 45 degrees; in the process of continuing to move upward, the hinged end of the drive shaft drives the inverted L-shaped slider to slide upward, out of the upper inclined slide slot, and into the upper vertical slide slot to complete the fourth 45-degree flip;

[0026] When going down, you can complete the recovery by running in reverse from step 5;

[0027] In the above-mentioned flipping process, since a one-way transmission mechanism is provided between the inverted L-shaped slider and the driving shaft, the inverted L-shaped slider will drive the driving shaft to flip simultaneously during the upward or downward movement.

[0028] Furthermore, the grill lifting device includes a lifting rail; the grill slider is slidably arranged on the lifting rail, and the grill slider slides up and down along the lifting rail under the action of external force;

[0029] The turning device comprises:

[0030] Rail clamps are provided at both ends of the lifting slide rail;

[0031] A flip track is arranged parallel to one side of the lifting slide rail; the flip track is provided with a toothless section and a rack section;

[0032] A driving shaft frame is arranged on the slider, a driving shaft is arranged horizontally in the driving shaft frame, a grill mechanism is installed at the front end of the driving shaft, and a gear that can mesh with the rack of the rack section is arranged at the rear end of the driving shaft; the length of the rack section is equal to 1 / 2 of the circumference of the gear;

[0033] The drive shaft frame is provided with a shaft shifting mechanism capable of shifting the drive shaft to move axially; the shaft shifting mechanism includes at least one shifting rod, and the shifting rod is provided corresponding to the rail clamping head;

[0034] When the grill slider rises under the action of external force, the gear corresponding to the turning track runs upward on the toothless section, and the drive shaft does not move;

[0035] When the gear moves to the rack section driven by the slider, the gear rotates 180 degrees under the action of the rack section and then continues to move upward;

[0036] Under the action of the slider, the slider continues to move upward and makes the lever touch the upper rail clamping head, and then the shaft mechanism shifts the gear to the side of the flip track;

[0037] When the grill slide block moves downward under the action of external force, the grill slide block continues to move downward and makes the shifting rod touch the lower pull rail clamping head, and then the shifting shaft mechanism shifts the gear to the flip track.

[0038] Furthermore, the turning device comprises:

[0039] Guide rail: including a rack rail formed by an upper vertical rail, a lower vertical rail and a plurality of tooth columns arranged at equal intervals in the middle; wherein the tracks of the upper vertical rail and the lower vertical rail are located on the same vertical line, and the track of the rack rail is arranged parallel to the tracks of the upper vertical slide rail and the lower vertical slide rail;

[0040] Sliding piece: a gear meshing with the tooth column of the rack; smooth sections adapted to the upper vertical rail and the lower vertical rail are integrally arranged at the opposite ends of the gear; thus forming a sliding piece having relatively arranged smooth sections and relatively arranged gear sections and an integral piece; the driving shaft is coaxially arranged with the sliding piece; the other end of the driving shaft is connected to the grill;

[0041] A wedge-shaped section is formed between the smooth section and the gear section, and a guide groove is provided at the junction of the wedge-shaped section and the smooth section; a one-way passing mechanism is provided at the guide groove; sliding members of the two one-way passing mechanisms are provided with a sliding groove arranged parallel to the smooth section; the sliding groove is adapted to the tooth column of the rack;

[0042] When the driving shaft drives the slide to rise, the smooth section of the slide slides upward against the lower vertical rail;

[0043] When the slide slides upward to the rack, due to the existence of the one-way passing mechanism, the slide, under the action of the wedge-shaped section, the gear section meshes with the rack, and the slide continues to move upward along the rack and turns 180 degrees. Then, the gear section is separated from the rack, and the other smooth section of the slide rests on the upper vertical rail and continues to move upward;

[0044] When the driving shaft drives the slide member downward, the smooth section of the slide member slides downward against the upper vertical rail;

[0045] When the slide slides down to the rack rail, since the one-way passing mechanism is in the passing state in this direction, the slide slot of the slide is in the open state, and the slide slot goes down through the rack rail; and after passing the rack rail, it continues to move downward through the smooth section and leans on the lower vertical rail.

[0046] Furthermore, the grill lifting device is a passive grill double-speed lifting device.

[0047] Furthermore, the machine head lifting device at least includes a vertically arranged machine head guide rail, on which a machine head slider is slidably arranged; a driving device drives the machine head slider to slide up and down along the machine head guide rail; and the fryer machine head is arranged on the machine head slider.

[0048] Furthermore, the passive grill speed-up and down-lifting device comprises:

[0049] A lifting piece;

[0050] A limiting member is arranged on the machine head slide relative to the lifting member, and the lifting member is slidably arranged on the limiting member;

[0051] A scissor lift having at least three central hinge points, wherein:

[0052] The central hinge point at the lower end of the scissor frame is hinged to the chassis;

[0053] The central hinge point in the middle of the scissor frame is hinged to the lower end of the lifting member;

[0054] The central hinge point at the upper end of the scissor frame is hinged to the grill mechanism;

[0055] Among them, when the head slider rises, the lifting member slides relative to the head slider; when the head slider reaches a predetermined height, the lifting member is driven up by the limit member to drive the scissors frame to rise, and then the scissors frame drives the grill mechanism to rise at twice the speed.

[0056] Furthermore, the passive grill speed-up and down-lifting device comprises:

[0057] A lifting piece;

[0058] A limiting member is arranged on the machine head slide relative to the lifting member, and the lifting member is slidably arranged on the limiting member;

[0059] A vertically arranged chute, wherein a first rack is arranged in the chute along the height direction;

[0060] A first gear and a second gear are coaxially hinged at the lower end of the lifting member; the diameter of the second gear is greater than the diameter of the first gear;

[0061] The first gear meshes and travels along the first rack;

[0062] A grill guide rail is arranged on the slide groove, a grill slider is slidably arranged on the guide rail, and the grill mechanism is installed on the grill slider;

[0063] A second rack is provided on the grill slider corresponding to the second gear; the second gear meshes and moves along the second rack;

[0064] Among them, when the head slider rises, the lifting member slides relative to the head slider; when the head slider reaches a predetermined height, the lifting member is driven up under the action of the limit member to drive the first gear and the second gear to rise, and then the second gear drives the grill slider and the grill mechanism to rise at twice the speed.

[0065] Furthermore, the machine head lifting device is a passive lifting device; the passive lifting device comprises a machine head slide rail, a machine head slider is slidably arranged on the machine head slide rail, and the machine head is mounted on the machine head slider;

[0066] A scissor lift having at least three central hinge points, wherein:

[0067] The central hinge point at the lower end of the scissor frame is hinged to the chassis or the machine head slide rail;

[0068] The central hinge point at the upper end of the scissor frame is hinged to the machine head slider;

[0069] A manual drive device is used to drive the central hinge point in the middle or upper end of the scissor frame.

[0070] Furthermore, the manual drive device comprises: a lever, the fulcrum of which is hinged on the chassis or the machine head slide rail; one end of the lever is a handle, and the other end is hinged on the central hinge point in the middle or upper end of the scissor frame; the handle of the lever is pulled downward, so that the other end of the lever is used to drive the scissor frame upward to complete the lifting; or,

[0071] The manual drive device includes: a rack connected to the middle center hinge point, or a gear corresponding to the rack is arranged on the machine head slide rail; a handle is connected to the shaft of the gear, and the handle is turned to drive the gear to rotate, thereby driving the rack to move upward to drive the scissor frame to lift upward; or,

[0072] The manual drive device includes: a cam is arranged on the head slide rail corresponding to the middle center hinge point; a push rod is integrally arranged on the middle center hinge point corresponding to the cam, and a handle is connected to the shaft of the gear. The handle is turned to drive the cam to rotate, thereby driving the push rod to move upward to drive the scissors frame to complete the lifting upward.

[0073] To achieve the above object, the air fryer cooking method of the present invention is performed using the air fryer as claimed in claim 1, and the method comprises the following steps:

[0074] 1) Steps for placing food:

[0075] Lift the fryer head using the head lifting device;

[0076] Place food on the grill above the pan;

[0077] Use the machine head lifting device to lower the fryer head onto the grill and perform the first cooking;

[0078] 2) Lifting steps:

[0079] After the preset cooking time, the fryer head is lifted for the second time using the head lifting device;

[0080] After the fryer head is lifted to a predetermined position, the passive grill speed lifting device drives the grill to rise, or the head lifting device drives the grill lifting device to rise to drive the grill to rise;

[0081] After the grill rises to a predetermined position, the passive grill speed lifting device drives the grill to descend, or the head lifting device drives the grill lifting device to descend to drive the grill to descend;

[0082] During the rising and / or descending of the grill, the turning device drives the grill to turn 180 degrees;

[0083] The grill is lowered to its initial position;

[0084] The fryer head is lowered onto the grill and cooking is done a second time;

[0085] 3) Repeat step 2) one more time according to the preset program until cooking is completed.

[0086] The present invention has the following advantages:

[0087] 1) After adding the machine head lifting device, the machine head can be opened by lifting the device to prevent burns.

[0088] 2) Timing or controlled opening function can be set as needed to achieve automatic control.

[0089] 3) By moving the lifting device to bring the food closer to the upper heating device, the distance between the grilled food and the grill head is compressed. When the grilling has been going on for a certain period of time or a certain effect has been achieved, the distance is increased and then compressed, so that the surface of the skewers can be "burned" at a faster speed; and each rise and fall just completes a flip of the skewers, so that both sides of the skewers are grilled, the outside is burnt and the inside is tender. This grilling mode can better exert the effect of the "Maillard reaction" and taste better.

[0090] 4) The heating device is “upper-mounted” to prevent grease from dripping onto the grill head, reducing smoke or preventing fire.

[0091] 5) In the past, we always kept a certain distance. If we were too close, oil splashing would cause a fire or the food would burn easily. However, keeping a certain distance often results in a long grilling time. Therefore, we raise the food closer to the grill head, put it down and turn it over after a certain period of time. This not only saves time and eliminates unsafe problems, but also increases the effect of grilling, achieving three goals at one stroke.

[0092] 6) North American power sockets can generally only withstand a heating power of no more than 2 kilowatts, which will cause a long time of poor results for large ovens or air fryers. With the lifting and flipping functions, this can be greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0093] Figure 1 This is a schematic structural diagram of Example 1 of the air fryer of the present invention.

[0094] Figure 2 for Figure 1 Structural schematic diagram of the manual double-speed lifting air fryer of the present invention.

[0095] Figure 3 for Figure 2 Schematic diagram of the embodiment after the fryer head is raised.

[0096] Figure 4 It is a schematic diagram of the structure of a passive grill lift air fryer.

[0097] Figure 5 for Figure 4 Schematic diagram of the embodiment after the grill is raised.

[0098] Figure 6 The structure diagram of an embodiment of a passive double-speed grill lifting device is shown in FIG. (a) is a schematic diagram of the grill lifting device before it is lifted; (b) is a schematic diagram of the grill lifting device during its lifting; and (c) is a schematic diagram of the grill lifting device after it is lifted.

[0099] Figure 7 It is a schematic diagram of the three-dimensional structure of the air fryer with a passive double-speed grill lifting device.

[0100] Figure 8 It is a schematic diagram of the structure of the inverted Y-shaped turning device.

[0101] Fig. 9 for Figure 8 Schematic diagram of the slider in the inverted L-shaped slider sliding in the inverted Y-shaped guide rail.

[0102] Fig.10 for Figure 8 Schematic diagram of the middle drive shaft support structure.

[0103] Fig.11 for Fig.10 Schematic diagram of the middle ratchet structure.

[0104] Fig.12 Schematic diagram of the double-track flipping device structure; (a) before rising; (b) during rising; (c) after rising and flipping; (d) after the gear is shifted by the shifting shaft mechanism; (e) after descending; (f) after descending and flipping.

[0105] Fig.13 Schematic diagram of the drive frame structure; among them, (a) the top view of the drive frame; (b) the cross-sectional view of the drive frame; (c) the schematic diagram after the shifting shaft mechanism is shifted.

[0106] Fig.14 It is a schematic diagram of the structure of another flipping device; (a) the left picture is a schematic diagram before the slide rises, and the right picture is a rear view of the left picture; (b) the left picture is a schematic diagram during the slide rises, and the right picture is a rear view of the left picture; (c) the left picture is a schematic diagram after the slide rises, and the right picture is a rear view of the left picture.

[0107] Fig.15 for Fig.14 Schematic diagram after further action; (d) The left picture is a schematic diagram before the slide descends, and the right picture is a rear view of the left picture; (e) The left picture is a schematic diagram during the slide descending, and the right picture is a rear view of the left picture; (f) The left picture is a schematic diagram after the slide descends, and the right picture is a rear view of the left picture.

[0108] Fig.16 for Figure 7 Schematic diagram of the connection between the lifting rack and the grill part.

[0109] Fig.17 for Figure 7 Illustration of the center lift and grill when not raised.

[0110] Fig.18 This is a schematic diagram of the structure of the grill in Example 6.

[0111] Fig.19 for Fig.18 Side view of the medium grill.

[0112] Fig. 20 This is a schematic diagram of the top rod flipping structure in Example 11 of the present invention.

[0113] Fig.21 for Fig. 20 AA-axis diagram of the middle grill during its descent.

[0114] Fig. 22 for Fig. 20 Schematic diagram of the BB direction during the descent of the middle grill.

[0115] Fig.23 for Fig. 20 AA diagram after the middle grill is lowered.

[0116] Fig.24 for Fig. 20 Schematic diagram of the BB direction after the middle grill is lowered.

[0117] Fig.25 for Fig. 20 AA diagram after the middle grill is raised.

[0118] Fig.26 for Fig. 20 Schematic diagram of the BB direction after the middle grill is raised. DETAILED DESCRIPTION

[0119] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0120] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0121] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0122] About the machine head lifting device

[0123] The present invention aims to provide a head lifting device between a fryer head and a chassis, wherein the head lifting device can lift the fryer head upwards. The fryer head generally includes a heating part and a baking cover.

[0124] The machine head lifting device can be arranged on one side or both sides of the air fryer as required;

[0125] The head lifting device can be arranged on the fryer head (the free end is located on the chassis) as required; it can also be arranged on the chassis (the free end is located on the fryer head).

[0126] After the machine head lifting device is lifted, the heating part and the baking cover are lifted and leave the chassis; after the machine head lifting device is lowered, the heating part and the baking cover are lowered, and the baking cover is covered on the chassis to form a heating space.

[0127] The head lifting device can be an electric lifting device or a manual lifting device according to the needs; for example, it can be an electric push rod; an electric linear slide, an electric scissor lift, etc. The lifting device can realize the upper and lower separation of the chassis and the fryer head to prevent accidents such as scalding.

[0128] In order to cooperate with the electric lifting device, the head lifting device is generally controlled by a control device; the control device can be a single chip microcomputer or a control switch in the fryer; the control device is used to control the rise and fall of the head lifting device and the dwell time after rising to the top dead point according to the instructions. The rise and fall time includes the interval time between the rise and fall, and also includes the time required for the rise and fall, that is, the rise and fall speed; it can be selected and designed according to the different ingredients and personal preferences; for example, it rises at a speed of 20 cm / min; after rising to the top dead point, it stays for 2 minutes and then starts to fall, the falling speed is 30 cm / min, and after falling to the bottom dead point, it stays for another 2 minutes and then starts to rise, repeating until the predetermined baking time, such as 5 minutes, 10 minutes, 20 minutes, etc.; it can also be designed to be a fixed speed, with a continuous rise and fall of 25 cm / min until the predetermined baking time, such as 5 minutes, 10 minutes, 20 minutes, etc.

[0129] The manual lifting device can adopt a manual linear slide, a manual speed-doubling mechanism, etc. The speed-doubling mechanism can be a scissor-type or a gear-type, and its driving method can be lever-driven or gear-driven.

[0130] Example 1

[0131] like Figure 1 As shown, the air fryer of this embodiment includes a chassis 1 located at the bottom, and the chassis 1 can be designed as needed, and it can be a separate chassis or a cylindrical chassis; Figure 1 The fryer head 2 is arranged on the chassis; the fryer head includes a heating part 21 and a baking cover 22 below the heating part; the heating part is generally composed of a fan and a heating wire or a heating tube, which will not be discussed here; the baking cover can be made of metal, plastic or high temperature resistant transparent material, preferably, a high temperature resistant transparent material is used, which is conducive to observing the cooking situation.

[0132] An electric slide is installed on one side of the fryer head and the chassis; it includes a guide column or slide rail 34 with a U-shaped cross-section, a drive motor 31 is arranged in the guide column or slide rail 34, the output shaft of the drive motor is connected to a screw rod 32, a slider 33 is sleeved on the screw rod, the drive motor drives the screw rod 32 to rotate, and the screw rod drives the slider to move up and down along the guide column to complete the lifting and lowering of the fryer head.

[0133] Example 2

[0134] As a variation of the above embodiment, this embodiment adopts a manual machine head lifting device.

[0135] like Figure 2 and Figure 3 The figure shows a schematic diagram of a manual scissor-type speed-multiplying mechanism applied to the present embodiment. As shown in the figure, the scissor-type speed-multiplying mechanism 36 adopts a scissor-type speed-multiplying mechanism with a total of 4 center hinge points 361 (in the present invention, all center hinge points between the bottom and the top are referred to as intermediate hinge points in the present invention). The bottom is the first center hinge point; the top is the fourth center hinge point; a structure with more center hinge points can also be adopted, and the more center hinge points there are, the greater the difference in lifting and lowering distances.

[0136] In the figure, a base 362 is provided at one side of the bottom of the chassis, and two guide rods 363 are provided on the base; the guide rods can also be Figure 1 The U-shaped guide column or slide rail shown in the figure is replaced; a head slider is arranged on the fryer head, and the head slider is slidably arranged on two guide rods (guide columns or slide rails);

[0137] The upper center hinge point of the scissor-type speed-multiplying mechanism is connected to the machine head slider; the lower center hinge point is connected to the chassis;

[0138] A free end of a lever 364 is provided below a second central hinge point, and the fulcrum of the lever is provided on a guide column or a slide rail or a chassis; Figure 3 As shown, prying the lever can drive the scissor frame upward, thereby driving the fryer head to rise at double the speed.

[0139] As a variation of this embodiment, of course, a cam or a gear may be used instead of a lever to drive the scissor-type speed mechanism; for example: a push rod is provided at the second center hinge point, a cam is provided below the push rod corresponding to the push rod, and a handle is coaxially provided on the cam. The cam is driven to rotate by the handle to push the corresponding second center hinge point, so as to complete the lifting of the scissor frame.

[0140] For another example, a slide groove is vertically arranged on the machine head slide rail corresponding to the second center hinge point (or other intermediate center hinge point), and a rack is connected to the second center hinge point through an axis rod passing through the slide groove; a gear is arranged on the machine head slide rail corresponding to the rack; a handle is connected to the shaft of the gear, and the handle is turned to drive the gear to rotate, thereby driving the rack to move upward to drive the scissors frame to complete the lifting upward.

[0141] About Grills and Grill Lifts

[0142] In the process of processing some foods, a grill is needed, such as grilling meat, grilling fish, etc. Therefore, a grill mechanism 5 is arranged above the bottom plate, and the grill mechanism can be designed as needed; it can be a grilling tray that can be used to grill various foods, or it can be a grilling basket (basket-shaped grill) or a grilling frame (frame-type grill) or a grilling fence (rail-shaped grill), etc.; it can also be a grilling tray or a grilling basket or a grilling frame or a grilling fence with a lifting frame.

[0143] After the fryer head is lifted by the head lifting device, it is usually necessary to dissipate the heat in the food as quickly as possible and to facilitate the taking and placing of the food. At this time, the grill needs to be lifted from the hotter bottom plate.

[0144] As a further improvement of the present invention, a grill lifting device is provided on the fryer head and / or the chassis; the grill mechanism is provided on the grill lifting device, and the grill lifting device can lift the grill mechanism 5 from the chassis after the chassis and the fryer head are separated up and down, so as to complete the heat dissipation and the taking and placing of food.

[0145] Similarly, the grill lifting device can be an active lifting device, for example, an electric lifting device or a manual lifting device can be selected according to needs; for example: it can be an electric push rod; a scissor-type lifting device, etc. This method can be implemented by making minor changes to the above-mentioned embodiment 1.

[0146] However, if both the frame lifting device and the grill lifting device are electrically driven, it will obviously increase the cost; therefore, a passive grill lifting device can also be used, that is, the force generated by the lifting process of the head lifting device is used to complete the lifting of the grill.

[0147] As an embodiment, the passive grill lifting device includes a grill slide rail installed on one side of the head lifting device. The grill slide rail is used to guide the grill during the rising process. Its specific structural form can be designed according to needs, that is, it can be shared with the head lifting device or set separately; a grill slider is set on the grill slide rail, and the grill mechanism is installed on the grill slider; the grill slider is used to transfer force to the grill in the grill slide rail, and the structural form of the grill slider is adapted to the grill slide rail and can be various. A hook belt mechanism or a lifting rod is set on the head lifting device. After the head lifting device drives the fryer head to rise to a predetermined position, it drives the grill slider on the passive grill lifting device to rise along the slide rail.

[0148] Example 3

[0149] like Figure 4 and Figure 5As shown, it is an embodiment of the passive grill lifting device in the present invention; an electric slide is installed on one side of the fryer head and the chassis; it includes a guide column or a slide rail 34 with a U-shaped cross-section, a drive motor 31 is arranged in the guide column or the slide rail 34, the output shaft of the drive motor is connected to a screw rod 32, and a head slider 33 is sleeved on the screw rod. The drive motor drives the screw rod 32 to rotate, and the screw rod drives the slider to move up and down along the guide column to complete the lifting of the fryer head.

[0150] The lifting member 4 may be a lifting rod or a lifting plate with a slide groove; Figure 7 The middle lifting member 4 is a lifting plate with a slide groove; a sliding hole matching the lifting plate is provided on the machine head slider relative to the lifting plate; a limiting member 331 is provided on the machine head slider in the sliding hole relative to the slide groove, and the lifting member is slidably provided on the limiting member; the limiting member is different according to different lifting members; Figure 4 and Figure 5 The limiting member is a pin arranged in the slide hole and adapted to the slide slot. The lower end of the lifting member 4 is fixed on the grill mechanism.

[0151] When the nose is at the bottom, Figure 4 As shown, the limiting member on the machine head slider is located at the lower dead point of the slide groove of the lifting member; when the machine head slider rises, the limiting member on the machine head slider slides along the slide groove of the lifting member, and at this time, the lifting member remains stationary under the action of the grill and its own gravity;

[0152] The head slide block continues to rise, and when the limiter on the head slide block slides along the slide groove of the lifting member to the upper dead point of the slide groove, Figure 5 As shown, the limiting member on the machine head slide block drives the lifting member to slide upward, thereby driving the grill mechanism to move upward through the lifting member.

[0153] About Passive Speed ​​Grill Lifting Device

[0154] During some air frying processes, some food processing processes require repeated flipping, such as roasting lamb legs, roasting pork chops, roasting fish, etc. The present invention uses a flipping device to flip the grill 180 degrees to achieve the flipping function. In order to achieve flipping, the lifting height of the grill needs to reach the position between the fryer head and the chassis; but in order to facilitate the placement of food, the distance between the grill and the fryer head must be large enough; this will inevitably cause the height of the entire device to be high and the volume occupied to be large. For this reason, a passive double-speed lifting mechanism is used in the grill mechanism in some preferred embodiments of the present invention.

[0155] Example 4

[0156] like Figure 6 As shown, it is an embodiment of the passive double-speed grill lifting device of the present invention;

[0157] In this embodiment, a gear speed multiplication mechanism is used as a passive grill lifting device, as shown in the figure:

[0158] An electric slide is installed on one side of the fryer head and the chassis; it includes a guide column or slide rail 34 with a U-shaped cross-section, a drive motor 31 is arranged in the guide column or slide rail 34, the output shaft of the drive motor is connected to a screw rod 32, and a head slider 33 is sleeved on the screw rod. The drive motor drives the screw rod 32 to rotate, and the screw rod drives the slider to move up and down along the guide column to complete the lifting and lowering of the fryer head.

[0159] A lifting member 4 (including a lifting rod and a lifting plate with a long groove); a limiting member (not shown in the figure) is arranged on the machine head slider 33 relative to the lifting member, and the lifting member is slidably arranged on the limiting member;

[0160] A first rack 371 is arranged in the guide column or the slide rail along the height direction;

[0161] A first gear 41 and a second gear 42 are coaxially hinged at the lower end of the lifting member; the diameter of the second gear is greater than the diameter of the first gear;

[0162] The first gear 371 moves along the first rack meshing;

[0163] A grill guide rail is provided on the slide rail, a grill slider 51 is slidably provided on the guide rail, and the grill mechanism is installed on the grill slider 51;

[0164] A second rack is provided on the grill slider corresponding to the second gear; the second gear meshes and moves along the second rack;

[0165] In the initial state, the motor is not working and the machine head slider is at the bottom stop position. Figure 6 Bottom side view (left side view); when the machine head slider rises, the lifting member slides relative to the machine head slider. At this time, the machine head has risen to a certain height, but the grill has not risen. Figure 6 Middle view; when the head slider reaches the predetermined height, the lifting member is driven to rise under the action of the limit member to drive the first gear and the second gear to rise, and then the second gear drives the grill slider and the grill mechanism to rise at a double speed, such as Figure 6 Upper side view (right side view).

[0166] Example 5

[0167] like Figure 7 As shown; it is another embodiment of the passive double-speed grill lifting device of the present invention;

[0168] The air fryer of this embodiment comprises a chassis 1 located at the bottom, and a fryer head 2 is arranged opposite to the chassis;

[0169] The head lifting device is an electric slide, which is installed on one side of the fryer head 2 and the chassis 1; a driving motor 31 is arranged in the guide column (not shown in the figure), and the output shaft of the driving motor is connected to a screw rod 32, and a slider 33 is sleeved on the screw rod. The driving motor drives the screw 32 to rotate, and the screw rod drives the slider to move up and down along the guide column to complete the lifting and lowering of the fryer head.

[0170] The grill lifting device on the side of the machine head lifting device adopts a scissor-type speed mechanism. As shown in the figure, the scissor-type speed mechanism 36 of this embodiment adopts a scissor-type speed mechanism with 4 central hinge points in total. The more central hinge points there are, the greater the lifting distance difference. The lower central hinge point is connected to the chassis; the second central hinge point of the scissor-type speed mechanism is hinged to the lower end of the lifting member 4.

[0171] The lifting member 4 is a lifting plate with a sliding groove; a sliding hole adapted to the lifting plate is arranged on the machine head slider relative to the lifting plate; a limiting member 331 is arranged on the machine head slider in the sliding hole relative to the sliding groove, and the lifting member is slidably arranged on the limiting member.

[0172] The grill mechanism 5 is arranged on the opening of the chassis 1;

[0173] The fourth central hinge point of the scissor-type speed-multiplying mechanism is connected with a grill mechanism 5 .

[0174] The working process is equivalent to that of Example 3: when the machine head is at the bottom, the limiter on the machine head slider is located at the lower dead point of the slide groove of the lifting member; when the machine head slider rises, the limiter on the machine head slider slides along the slide groove of the lifting member, and at this time the lifting member remains stationary under the action of the grill and its own gravity;

[0175] The head slider continues to rise, and when the limit piece on the head slider slides along the slide groove of the lifting piece to the upper dead point of the slide groove, the limit piece on the head slider drives the lifting piece to slide upward, thereby driving the second center hinge point of the scissors frame to rise through the lifting piece, thereby driving the grill mechanism to rise at 5 times the speed.

[0176] About turning over the grill

[0177] During some air frying processes, some food processing processes need to be repeatedly turned over, for example, roasted lamb legs, roasted pork chops, roasted fish, etc. The present invention is provided with a turning device on the grill lifting device, which is used to turn the lifted grill mechanism 180 degrees to achieve the turning function. The turning device can be an active type or a passive type.

[0178] Embodiment 6 (active flipping)

[0179] Fig.18 and Fig.19The schematic diagram of an embodiment of electric flipping is shown, with grill skewers on the grill 22, and the number of grill skewers can be set as needed, which can be one, two or more; the figure takes four grill skewers 223 as an example, and four rotating shafts 221 are set on the grill corresponding to the grill skewers, as shown in the figure, the rotating shaft is rotatably set on the grill, and one part of it is located outside the grill, and one part is located inside the grill; the rotating shaft and the grill skewers are detachably matched, for example, the end of the grill skewers is a flat tip, and a flat jack matching the grill skewers is set on the rotating shaft at least located in the grill (or the entire rotating shaft), and after the grill skewers are inserted into the flat jack, they form a rotating shaft together with the rotating shaft. A magnetic recess matching the front end of the grill skewers can also be set on the rotating shaft, and when the grill skewers are inserted into the magnetic recess, they form a rotating shaft together with the grill skewers by relying on magnetism.

[0180] A sprocket 224 is coaxially arranged on each rotating shaft outside the grill, and two adjacent sprockets are connected by a chain ring, so that all the grilled skewers are connected together for linkage; a driving motor 222 is arranged on one side of the grill, and the output shaft of the driving motor can be connected by gears, chain rings or directly drives the driving shaft 225. In the accompanying drawings, a sprocket is installed on the driving shaft 225; a sprocket is installed on the driving shaft 225, and is connected to the sprocket on the rightmost rotating shaft through a chain ring; in this way, all the grilled skewers can be turned 180 degrees (face) at the same time through the driving motor.

[0181] Example 7 (Inertial Flip)

[0182] This embodiment is a further improvement of the embodiment 5. This embodiment adopts the same passive scissor-type double-speed flipping as the embodiment 5. Figure 7 As shown, the grill mechanism 5 is arranged at the opening of the chassis 1;

[0183] The fourth central hinge point of the scissor-type speed-multiplying mechanism is connected to a lifting frame 52; the lifting frame 52 ( Fig.16 The circle part in the green part) is hinged on both sides of the grill 5 ( Fig.16 The grill 5 can be turned over in the lifting frame 52 at the center of both sides of the red part; the hinge axis divides the grill into two parts, front and back;

[0184] A chassis turning axis or chassis turning hole is provided at the center of both sides of the chassis corresponding to the hinge of the grill; a connecting rod 53 ( Fig.16 The other end of the connecting rod is hinged to the middle of the front or rear half of the grill on the same side.

[0185] The overturning device utilizes the inertia generated during the rising process of the grill lifting device to realize overturning, has a simple structure, is easy to use, and does not require the use of a separate electric overturning device.

[0186] Example 8 (Y-shaped guide rail flipped over)

[0187] like Figures 8 to 11 As shown, this embodiment uses an inverted Y-shaped turning guide rail for turning over, including:

[0188] The driving shaft 384 is hinged on the grill lifting device, one end of the driving shaft extends to one side of the grill lifting device and is connected to the grill, and the other end extends to one side outside the grill lifting device and is hinged with an inverted L-shaped slider 381, the inverted L-shaped slider includes a support arm 3811 and a cylindrical slider 3812 arranged at the front end of the support arm; a one-way transmission mechanism 382 is arranged between the lower end of the support arm and the driving shaft 384; the one-way transmission mechanism 382 is composed of a ratchet cylinder 3821 and a ratchet pawl 3822 arranged coaxially with the driving shaft 384. The driving shaft is coaxially arranged with the grill mechanism through the upper end of the grill lifting device (for example, the fourth central hinge point of the scissor-type speed device in Example 5 or 6 or the grill slider in Example 4).

[0189] A flip guide rail 383 is vertically arranged corresponding to the inverted L-shaped slider, and a flip slide groove adapted to the cylindrical slider is arranged on the flip guide rail; the flip slide groove includes an upper vertical slide groove 3831, an inverted Y-shaped flip slide groove 3832 and a lower vertical slide groove 3833 from top to bottom, and the inverted Y-shaped flip slide groove includes an upper inclined slide groove, a horizontal slide groove and a lower inclined slide groove which are connected; the upper end of the upper inclined slide groove is connected to the lower end of the upper vertical groove; the lower end of the lower inclined slide groove is connected to the lower vertical slide groove;

[0190] The cylindrical slider is slidably arranged in the slide groove; the flipping process of the inverted L-shaped slider in the flipping slide groove includes:

[0191] 1) Straight upward: When the grill lifting device drives the drive shaft to move upward from bottom to top, the inverted L-shaped slider moves upward along the lower vertical slide groove driven by the drive shaft. At this time, the inverted L-shaped slider is located directly above the drive shaft;

[0192] 2) Flip the first 45 degrees; when the inverted L-shaped slider moves upward to the lower inclined chute, the inverted L-shaped slider moves upward along the lower inclined chute and flips 45 degrees;

[0193] 3) Flip a second 45 degrees; the inverted L-shaped slider flips 45 degrees upward along the lower inclined chute and continues to slide into the horizontal chute for a second 45-degree flip; at this time, the inverted L-shaped slider is located in the horizontal chute; the hinged end of the drive shaft is located at the intersection of the Y-shaped flip chute;

[0194] 4) Flip a third 45 degrees; as the inverted L-shaped slider continues to move upward, the hinged end of the drive shaft drives the inverted L-shaped slider to slide up the inclined slide slot and flip a third 45 degrees; at this time, the inverted L-shaped slider is located behind the drive shaft;

[0195] 5) Flip the fourth 45 degrees; in the process of continuing to move upward, the hinged end of the drive shaft drives the inverted L-shaped slider to slide upward, out of the upper inclined slide slot, and into the upper vertical slide slot to complete the fourth 45-degree flip;

[0196] When going down, you can complete the recovery by running in reverse from step 5;

[0197] During the above-mentioned flipping process, since a one-way transmission mechanism is arranged between the inverted L-shaped slider and the driving shaft, during the upward (or downward) process, the inverted L-shaped slider will drive the driving shaft to flip at the same time, while during the downward (or upward) process, the one-way transmission mechanism of the inverted L-shaped slider will not drive the driving shaft to flip at the same time.

[0198] The overturning device realizes overturning by utilizing the rising and falling process of the grill lifting device, has a simple structure and is easy to use, without the need for a separate electric overturning device.

[0199] Furthermore, as a further improvement of this embodiment, a positioning device may be provided corresponding to the driving shaft to prevent the food string from flipping due to imbalance on both sides of the food string. The positioning device has a relatively simple structure and can be designed as needed. For example, a pit is provided on the driving shaft, and a spring bead is provided corresponding to the pit, and a certain positioning effect is achieved by using the spring bead and the pit.

[0200] Example 9 (Double-track flipping)

[0201] like Fig.12 and 13 As shown, this embodiment adopts a double-track gear turning device, as shown in the figure, including a lifting slide rail 391, and a slider 392 is provided on the lifting slide rail 391. The slider 392 slides up and down along the lifting slide rail under the action of an external force (grill lifting device);

[0202] The turning device comprises:

[0203] Rail clamps 393 are provided at both ends of the lifting rail;

[0204] A flip track 394 is arranged parallel to one side of the lifting slide rail; the flip track is provided with a toothless section and a rack section 3941;

[0205] A driving shaft frame 395 is arranged on the sliding block, a driving shaft 396 is arranged horizontally in the front section of the driving shaft frame, a grill mechanism is installed at the front end of the driving shaft, and a spline tooth is arranged at the tail end of the driving shaft; a gear 398 which can mesh with the rack of the rack section is arranged at the tail end of the driving shaft frame; the gear shaft extends into the rear section of the driving shaft frame and is arranged coaxially with the driving shaft; a spline hole is arranged at one end of the gear shaft extending into the driving shaft frame, and the spline hole of the gear shaft is sleeved on the spline teeth of the driving shaft for transmission connection; in this way, when the gear is pushed outward, the transmission relationship between the gear shaft and the driving shaft is still maintained through the spline connection.

[0206] The length of the rack segment is equal to 1 / 2 of the circumference of the gear; thus, the gear turns over 180 degrees when passing through the gear segment.

[0207] The driving shaft frame is provided with a shifting shaft mechanism 397 capable of shifting the shaft of the gear 398 to move axially; the shifting shaft mechanism includes at least one shifting rod, and the shifting rod is provided corresponding to the rail clamping head;

[0208] When the slider is controlled to rise, the gear corresponding to the turning track runs upward on the toothless section, and the drive shaft does not move;

[0209] When the gear moves to the rack section driven by the slider, the gear rotates 180 degrees under the action of the rack section and then continues to move upward;

[0210] Under the action of the slider, the slider continues to move upward and makes the lever touch the upper rail clamping head, and then the shaft mechanism shifts the gear to the side of the flip track;

[0211] The slider moves downward under control; after the slider continues to move downward and the lever contacts the lower rail clamp, the lever mechanism moves the gear to the flip track.

[0212] Furthermore, as a further improvement of this embodiment, a positioning device may be provided corresponding to the driving shaft to prevent the food string from flipping due to imbalance on both sides of the food string. The positioning device has a relatively simple structure and can be designed as needed. For example, a pit is provided on the driving shaft, and a spring bead is provided corresponding to the pit, and a certain positioning effect is achieved by using the spring bead and the pit.

[0213] Example 10 (Gear Flip)

[0214] like Fig.14 and Fig.15 As shown, this embodiment is another embodiment of the flipping device.

[0215] Guide rail 373: includes an upper vertical rail 3731, a lower vertical rail 3733 and a rack rail 3732 formed by a plurality of tooth columns arranged at equal intervals in the middle; wherein the tracks of the upper vertical rail and the lower vertical rail are located on the same vertical line, and the track of the rack rail is arranged parallel to the tracks of the upper vertical slide rail and the lower vertical slide rail;

[0216] Sliding member: a gear 3741 meshing with the tooth column of the rack rail; smooth sections 3742 adapted to the upper vertical rail and the lower vertical rail are integrally arranged at opposite ends of the gear; thus forming a sliding member having relatively arranged smooth sections and relatively arranged gear sections and an integral body;

[0217] A wedge-shaped section 3743 is formed between the smooth section and the gear section, and a guide groove is provided at the junction of the wedge-shaped section and the smooth section; a one-way passing mechanism 3745 is provided at the guide groove; a slide groove 3744 is provided on the sliding pieces of the two one-way passing mechanisms in parallel with the smooth section; the slide groove is adapted to the tooth column of the rack;

[0218] like Fig.14 As shown, one end of the drive shaft is coaxially arranged on the gear, and the other end of the drive shaft is installed with the grill; the drive shaft is supported by the grill lifting device, and when the drive shaft drives the slide member to rise under the action of the grill lifting device, the smooth section of the slide member slides upward against the lower vertical rail;

[0219] When the slide slides upward to the rack, due to the existence of the one-way passing mechanism, the slide, under the action of the wedge-shaped section, the gear section meshes with the rack, and the slide continues to move upward along the rack and turns 180 degrees. Then, the gear section is separated from the rack, and the other smooth section of the slide rests on the upper vertical rail and continues to move upward;

[0220] like Fig.15 As shown, when the driving shaft drives the slide member downward, the smooth section of the slide member slides downward against the upper vertical rail;

[0221] When the slide slides down to the rack rail, since the one-way passing mechanism is in the passing state in this direction, the slide slot of the slide is in the open state, and the slide slot goes down through the rack rail; and after passing the rack rail, it continues to move downward through the smooth section and leans on the lower vertical rail.

[0222] Furthermore, as a further improvement of this embodiment, a positioning device may be provided corresponding to the driving shaft to prevent the food string from flipping due to imbalance on both sides of the food string. The positioning device has a relatively simple structure and can be designed as needed. For example, a pit is provided on the driving shaft, and a spring bead is provided corresponding to the pit, and a certain positioning effect is achieved by using the spring bead and the pit.

[0223] Example 11 (Top rod flipped over)

[0224] This embodiment is an improvement of Embodiment 6.

[0225] like Figure 20 to Figure 26 As shown, the flipping device comprises: a rotation drive structure and a positioning structure are arranged on the rotation shaft 221;

[0226] The rotation drive structure includes: a push rod 11 is arranged on the same side of each rotating shaft, and the push rod is arranged vertically upward on the upper surface of the chassis. Its function is to push the touch rod 2211 to rotate when it contacts it, thereby driving the rotating shaft to rotate;

[0227] A touch rod 2211 is radially arranged on the rotating shaft at a position corresponding to the push rod, and both ends of the touch rod are located outside the rotating shaft, and the two sections of the touch rod outside the rotating shaft are equal in length;

[0228] The positioning structure includes: a positioning plate 2212 is radially arranged on the rotating shaft, the two ends of the positioning plate are located outside the rotating shaft, and the two sections of the positioning plate outside the rotating shaft are equal in length; the touch rod is arranged at a distance from the positioning plate; a positioning spring 226 is arranged on one side of the positioning plate to abut against the positioning plate, as shown in the figure, the length of the positioning spring is preferably longer than the positioning plate; when the lifting device rises ( Fig.25 and Fig.26 shown) or decrease ( Fig.21 and Fig. 22 When the positioning plate 2212 is moved away from the push rod, the positioning spring 226 presses against the plate surface of the positioning plate 2212, so that the end of the touch rod on the rotating shaft close to the push rod is set at an acute angle with the push rod;

[0229] like Fig.23 As shown, when the lifting device descends or rises to the point where one end of the feeler rod is pressed by the push rod, the feeler rod drives the rotating shaft to start rotating, and completes a rotation of more than 90 degrees during the continued descending process. The above angle is the minimum angle. When the feeler rod is thin, after its rotation angle exceeds 90 degrees, the positioning of the rotating shaft can be completed with the help of the positioning spring. When the feeler rod is thick and forms a rectangular block, its end face is thick, and its rotation angle usually exceeds 135 degrees, the positioning of the rotating shaft can be completed with the help of the positioning spring.

[0230] □After adding the above-mentioned lifting and turning functions, it has the following advantages:

[0231] 1) Bake thoroughly until one side is charred, then turn the grill head over and char the other side. This grilling mode can better exert the effect of the "Maillard reaction" and taste better;

[0232] 2) The heating device is “upper”, which can prevent grease from dripping onto the grill head, reducing oil smoke or preventing fire;

[0233] 3) In the past, we always kept a certain distance. If we were too close, oil splashing would cause a fire or the food would be easily burnt. However, keeping a certain distance often results in a long grilling time. Therefore, we raise the food closer to the grill head, put it down and flip it over after a certain period of time. This not only saves time and eliminates unsafe problems, but also increases the effect of grilling, achieving three goals at one stroke.

[0234] 4) North American power sockets can generally only withstand a heating power of no more than 2 kilowatts, which will cause a long time of poor results for large ovens or air fryers. The lifting and flipping functions can greatly improve this.

[0235] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0236] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0237] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An air fryer, characterized in that: It comprises a fryer head; the fryer head comprises a heating unit and a baking cover integrally arranged below the heating unit, and a bottom plate is arranged below the fryer head corresponding to the lower opening of the baking cover; A head lifting device is arranged between the fryer head and the chassis.

2. The air fryer according to claim 1, characterized in that: A grill mechanism is arranged above the chassis; a grill lifting device is arranged on the fryer head and / or the chassis; and the grill mechanism is arranged on the grill lifting device.

3. The air fryer according to claim 2, characterized in that: A flipping device is arranged on the grill lifting device to flip the grill mechanism 180 degrees after it is lifted.

4. The air fryer according to claim 2, characterized in that: The grill lifting device is a passive grill lifting device; the passive grill lifting device comprises a grill slide rail installed on one side of the machine head lifting device, a grill slider is arranged on the grill slide rail, and the grill mechanism is installed on the grill slider; The head lifting device is provided with a hook belt mechanism relative to the grill slider; after the head lifting device drives the fryer head to rise to a predetermined position, it drives the grill slider on the passive grill lifting device to rise along the slide rail.

5. The air fryer according to claim 3, characterized in that: The grill mechanism comprises a grill frame and a lifting frame; The turning device comprises: The lifting frame is installed on the grill lifting device; the two sides of the lifting frame are hinged to the centers of the two sides of the grill through hinge shafts, and the grill can be turned over in the lifting frame; the hinge shaft divides the grill into two parts, front and back; A chassis turning axis or chassis turning hole is arranged at the center of both sides of the chassis corresponding to the hinge of the baking frame; a connecting rod is hinged at the chassis turning axis or the chassis turning hole; the other end of the connecting rod is hinged at the middle of the front half or the rear half of the baking frame on the same side.

6. The air fryer according to claim 3, characterized in that: The turning device comprises: A driving shaft is hinged on the grill lifting device, one end of the driving shaft extends to one side inside the grill lifting device and is connected to the grill mechanism, and the other end extends to one side outside the grill lifting device and is hinged to an inverted L-shaped slider, the inverted L-shaped slider is composed of a support arm and a cylindrical slider arranged at the upper end of the support arm; a one-way transmission mechanism is arranged between the inverted L-shaped slider and the driving shaft; A flip guide rail is vertically arranged corresponding to the inverted L-shaped slider, and a flip slide groove adapted to the cylindrical slider is arranged on the flip guide rail; the flip slide groove includes an upper vertical slide groove, an inverted Y-shaped flip slide groove and a lower vertical slide groove from top to bottom, and the inverted Y-shaped flip slide groove includes an upper inclined slide groove, a horizontal slide groove and a lower inclined slide groove that are connected; the upper end of the upper inclined slide groove is connected to the lower end of the upper vertical groove; the lower end of the lower inclined slide groove is connected to the lower vertical slide groove; The cylindrical slider is slidably arranged in the slide groove; the length of the slide plate is adapted to the length of the upper inclined slide groove, the horizontal slide groove and the lower inclined slide groove; The flipping process of the inverted L-shaped slider in the flip chute includes: 1) Straight upward: When the grill lifting device drives the drive shaft to move upward from bottom to top, the inverted L-shaped slider moves upward along the lower vertical slide groove driven by the drive shaft. At this time, the inverted L-shaped slider is located directly above the drive shaft; 2) Flip the first 45 degrees; when the inverted L-shaped slider moves upward to the lower inclined chute, the inverted L-shaped slider moves upward along the lower inclined chute and flips 45 degrees; 3) Flip a second 45 degrees; the inverted L-shaped slider flips 45 degrees upward along the lower inclined chute and continues to slide into the horizontal chute for a second 45-degree flip; at this time, the inverted L-shaped slider is located in the horizontal chute; the hinged end of the drive shaft is located at the intersection of the Y-shaped flip chute; 4) Flip a third 45 degrees; as the inverted L-shaped slider continues to move upward, the hinged end of the drive shaft drives the inverted L-shaped slider to slide up the inclined slide slot and flip a third 45 degrees; at this time, the inverted L-shaped slider is located behind the drive shaft; 5) Flip the fourth 45 degrees; in the process of continuing to move upward, the hinged end of the drive shaft drives the inverted L-shaped slider to slide upward, out of the upper inclined slide slot, and into the upper vertical slide slot to complete the fourth 45-degree flip; When going down, you can complete the recovery by running in reverse from step 5; In the above-mentioned flipping process, since a one-way transmission mechanism is provided between the inverted L-shaped slider and the driving shaft, the inverted L-shaped slider will drive the driving shaft to flip simultaneously during the upward or downward movement.

7. The air fryer according to claim 3, characterized in that: The flipping device comprises: a rotation drive structure and a positioning structure are arranged on the rotation shaft; The rotary drive structure includes: a push rod is arranged on the same side of each rotating shaft, a touch rod is arranged radially on the rotating shaft at the position corresponding to the push rod, both ends of the touch rod are located outside the rotating shaft, and the two sections of the touch rod outside the rotating shaft are of equal length; The positioning structure comprises: a positioning plate is radially arranged on the rotating shaft, the two ends of the positioning plate are located outside the rotating shaft, and the two sections of the positioning plate outside the rotating shaft are of equal length; the touch rod and the positioning block are arranged at intervals; a positioning spring abutting against the positioning block is arranged on one side of the positioning block; When the lifting device rises or falls away from the push rod, the positioning spring sheet presses against the plate surface on one side of the positioning plate, so that the end of the touch rod on the rotating shaft close to the push rod is set at an acute angle with the push rod; When the lifting device descends or rises to the point where one end of the touch rod is pressed by the push rod, the touch rod drives the rotating shaft to start rotating, and completes a rotation of more than 90 degrees during the continued descending process.

8. The air fryer according to claim 3, characterized in that: The grill lifting device comprises a lifting rail; a grill slider is slidably arranged on the lifting rail, and the grill slider slides up and down along the lifting rail under the action of external force; The turning device comprises: Rail clamps are provided at both ends of the lifting slide rail; A flip track is arranged parallel to one side of the lifting slide rail; the flip track is provided with a toothless section and a rack section; A driving shaft frame is arranged on the slider, a driving shaft is arranged horizontally in the front section of the driving shaft frame, a grill mechanism is installed at the front end of the driving shaft, and a spline tooth is arranged at the tail end of the driving shaft; a gear that can mesh with the rack of the rack section is arranged at the tail end of the driving shaft frame; the gear shaft extends into the rear section of the driving shaft frame and is arranged coaxially with the driving shaft; a spline hole is arranged at one end of the gear shaft extending into the driving shaft frame, and the spline hole of the gear shaft is sleeved on the spline tooth of the driving shaft for transmission connection; The length of the rack segment is equal to 1 / 2 of the circumference of the gear; The driving shaft frame is provided with a shifting shaft mechanism capable of shifting the gear to move axially; the shifting shaft mechanism comprises at least one shifting rod, and the shifting rod is provided corresponding to the rail clamping head; When the grill slider rises under the action of external force, the gear corresponding to the turning track runs upward on the toothless section, and the drive shaft does not move; When the gear moves to the rack section driven by the slider, the gear rotates 180 degrees under the action of the rack section and then continues to move upward; Under the action of the slider, the slider continues to move upward and makes the lever touch the upper rail clamping head, and then the shaft mechanism shifts the gear to the side of the flip track; When the grill slide block moves downward under the action of external force, the grill slide block continues to move downward and makes the shifting rod touch the lower pull rail clamping head, and then the shifting shaft mechanism shifts the gear to the flip track.

9. The air fryer according to claim 3, characterized in that: The turning device comprises: Guide rail: including a rack rail formed by an upper vertical rail, a lower vertical rail and a plurality of tooth columns arranged at equal intervals in the middle; wherein the tracks of the upper vertical rail and the lower vertical rail are located on the same vertical line, and the track of the rack rail is arranged parallel to the tracks of the upper vertical slide rail and the lower vertical slide rail; Sliding piece: a gear meshing with the tooth column of the rack; smooth sections adapted to the upper vertical rail and the lower vertical rail are integrally arranged at the opposite ends of the gear; thus forming a sliding piece having relatively arranged smooth sections and relatively arranged gear sections and an integral piece; the driving shaft is coaxially arranged with the sliding piece; the other end of the driving shaft is connected to the grill; A wedge-shaped section is formed between the smooth section and the gear section, and a guide groove is provided at the junction of the wedge-shaped section and the smooth section; a one-way passing mechanism is provided at the guide groove; sliding members of the two one-way passing mechanisms are provided with a sliding groove arranged parallel to the smooth section; the sliding groove is adapted to the tooth column of the rack; When the driving shaft drives the slide to rise, the smooth section of the slide slides upward against the lower vertical rail; When the slide slides upward to the rack, due to the existence of the one-way passing mechanism, the slide, under the action of the wedge-shaped section, the gear section meshes with the rack, and the slide continues to move upward along the rack and turns 180 degrees. Then, the gear section is separated from the rack, and the other smooth section of the slide rests on the upper vertical rail and continues to move upward; When the driving shaft drives the slide member downward, the smooth section of the slide member slides downward against the upper vertical rail; When the slide slides down to the rack rail, since the one-way passing mechanism is in the passing state in this direction, the slide slot of the slide is in the open state, and the slide slot goes down through the rack rail; and after passing the rack rail, it continues to move downward through the smooth section and leans on the lower vertical rail.

10. The air fryer according to claim 6, 8 or 9, characterized in that: The driving shaft is provided with a positioning device so that the driving shaft can be positioned at a predetermined phase after being turned over.

11. The air fryer according to claim 2, characterized in that: The grill lifting device is a passive grill double-speed lifting device.

12. The air fryer according to claim 11, characterized in that: The machine head lifting device at least comprises a machine head guide rail arranged vertically, on which a machine head slider is slidably arranged; a driving device drives the machine head slider to slide up and down along the machine head guide rail; and the fryer machine head is arranged on the machine head slider.

13. The air fryer according to claim 12, characterized in that: Passive grill speed lifting device includes: A lifting piece; A limiting member is arranged on the machine head slide relative to the lifting member, and the lifting member is slidably arranged on the limiting member; A scissor lift having at least three central hinge points, wherein: The central hinge point at the lower end of the scissor frame is hinged to the chassis; The central hinge point in the middle of the scissor frame is hinged to the lower end of the lifting member; The central hinge point at the upper end of the scissor frame is hinged to the grill mechanism; Among them, when the head slider rises, the lifting member slides relative to the head slider; when the head slider reaches a predetermined height, the lifting member is driven up by the limit member to drive the scissors frame to rise, and then the scissors frame drives the grill mechanism to rise at twice the speed.

14. The air fryer according to claim 12, characterized in that: Passive grill speed lifting device includes: A lifting piece; A limiting member is arranged on the machine head slide relative to the lifting member, and the lifting member is slidably arranged on the limiting member; A vertically arranged chute, wherein a first rack is arranged in the chute along the height direction; A first gear and a second gear are coaxially hinged at the lower end of the lifting member; the diameter of the second gear is greater than the diameter of the first gear; The first gear meshes and travels along the first rack; A grill guide rail is arranged on the slide groove, a grill slider is slidably arranged on the guide rail, and the grill mechanism is installed on the grill slider; A second rack is provided on the grill slider corresponding to the second gear; the second gear meshes and moves along the second rack; Among them, when the head slider rises, the lifting member slides relative to the head slider; when the head slider reaches a predetermined height, the lifting member is driven up under the action of the limit member to drive the first gear and the second gear to rise, and then the second gear drives the grill slider and the grill mechanism to rise at twice the speed.

15. The air fryer according to claim 1, characterized in that: The machine head lifting device is a passive lifting device; the passive lifting device comprises a machine head slide rail, a machine head slider is slidably arranged on the machine head slide rail, and the machine head is mounted on the machine head slider; A scissor lift having at least three central hinge points, wherein: The central hinge point at the lower end of the scissor frame is hinged to the chassis or the machine head slide rail; The central hinge point at the upper end of the scissor frame is hinged to the machine head slider; A manual drive device is used to drive the central hinge point in the middle or upper end of the scissor frame.

16. The air fryer according to claim 15, characterized in that: The manual drive device comprises: a lever, the fulcrum of which is hinged on the chassis or the machine head slide rail; one end of the lever is a handle, and the other end is hinged on the central hinge point in the middle or upper end of the scissor frame; the handle of the lever is pulled downward, so that the other end of the lever drives the scissor frame upward to complete the lifting; or, The manual drive device includes: a rack connected to the middle center hinge point, or a gear corresponding to the rack is arranged on the machine head slide rail; a handle is connected to the shaft of the gear, and the handle is turned to drive the gear to rotate, thereby driving the rack to move upward to drive the scissor frame to lift upward; or, The manual drive device includes: a cam is arranged on the head slide rail corresponding to the middle center hinge point; a push rod is integrally arranged on the middle center hinge point corresponding to the cam, and a handle is connected to the shaft of the gear. The handle is turned to drive the cam to rotate, thereby driving the push rod to move upward to drive the scissors frame to complete the lifting upward.

17. An air fryer cooking method, wherein the method is performed using the air fryer as claimed in claim 1, characterized in that: The method comprises the following steps: 1) Steps for placing food: Lift the fryer head using the head lifting device; Place food on the grill above the pan; Use the machine head lifting device to lower the fryer head onto the grill and perform the first cooking; 2) Lifting steps: After the preset cooking time, the fryer head is lifted for the second time using the head lifting device; After the fryer head is lifted to a predetermined position, the passive grill speed lifting device drives the grill to rise, or the head lifting device drives the grill lifting device to rise to drive the grill to rise; After the grill rises to a predetermined position, the passive grill speed lifting device drives the grill to descend, or the head lifting device drives the grill lifting device to descend to drive the grill to descend; During the rising and / or descending of the grill, the turning device drives the grill to turn 180 degrees; The grill is lowered to its initial position; The fryer head is lowered onto the grill and cooking is done a second time; 3) Repeat step 2) one more time according to the preset program until cooking is completed.

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