Machine head assembly and air fryer with same

Abstract

The machine head assembly comprises a machine head, a hot air assembly, an annular supporting piece, a rotating piece and an air guide cover, an air exhaust cavity with a downward opening is formed in the machine head, the hot air assembly is installed in the air exhaust cavity, the annular supporting piece surrounds the hot air assembly and is rotatably arranged in the air exhaust cavity, and the rotating piece is installed in the air guide cover. The at least three rotating parts are arranged at intervals in the circumferential direction of the annular supporting part, the rotating parts and the annular supporting part are pivotally connected around a first axis, the first axis is parallel to the center line of the annular supporting part, and at least part of each rotating part is located between the outer circumferential face of the annular supporting part and the inner wall face of the exhaust cavity; at least part of the rotating part separates the peripheral face of the annular supporting part from the inner wall face of the exhaust cavity, the air guide cover is coaxially connected with the annular supporting part, and the air guide cover is suitable for separating the hot air assembly from a cooking cavity of the air fryer. The machine head assembly has the advantages that friction resistance is small when the wind scooper rotates relative to the machine head, and the temperature equalizing function is stable.

Description

Technical Field

[0001] The utility model relates to the technical field of cooking utensils, in particular to a head assembly and an air fryer having the same. Background Art

[0002] In the related art, cooking appliances such as air fryers usually install the air scoop on the machine head through a support, and the air scoop rotates under the drive of the motor so that the hot air is evenly blown to the cooking cavity to achieve uniform baking of the food on the frying basket. However, since the peripheral wall of the air scoop needs to be arranged around the outer peripheral surface of the hot air component, the center point of the air scoop and the support has no fixed position. When the air scoop and the support rotate, they are prone to radial deflection and displacement of the air scoop, and then rub against the machine head to generate greater resistance, making it difficult for the air scoop to rotate, and even causing it to get stuck, resulting in the inability to achieve the temperature equalization function and a poor user experience. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the utility model provides a head assembly, which has the advantages of small friction resistance when the air guide cover rotates relative to the head and stable temperature equalization function.

[0005] The embodiment of the utility model also provides an air fryer.

[0006] The head assembly of the utility model embodiment includes a head, a hot air assembly, an annular support, a rotating member and an air guide cover, the head forming an exhaust cavity with an opening facing downward; the hot air assembly is installed in the exhaust cavity; the annular support surrounds the hot air assembly and is rotatably arranged in the exhaust cavity; there are at least three rotating members and they are arranged at intervals along the circumference of the annular support, the rotating member is pivotally connected to the annular support around a first axis, the first axis is parallel to the center line of the annular support, at least part of the rotating member is located between the outer peripheral surface of the annular support and the inner wall surface of the exhaust cavity, and at least part of the rotating member separates the outer peripheral surface of the annular support from the inner wall surface of the exhaust cavity; the air guide cover is coaxially connected to the annular support, and the air guide cover is suitable for separating the hot air assembly from the cooking cavity of the air fryer.

[0007] According to the head assembly of the utility model, the air guide cover is coaxially connected with the annular support, the annular support surrounds the hot air assembly and is rotatably arranged in the exhaust cavity of the head, the rotating part rotatably mounted on the annular support protrudes from the outer peripheral surface of the annular support and rolls with the inner wall surface of the exhaust cavity, and the parts of at least three rotating parts located between the outer peripheral surface of the annular support and the inner wall surface of the exhaust cavity separate the annular support from the inner wall surface of the exhaust cavity, so that when the air guide cover rotates relative to the head, at least three rotating parts can limit the radial position of the air guide cover, ensuring that the air guide cover rotates smoothly without excessive radial deflection. At the same time, when the air guide cover rotates, rolling friction occurs between the rotating part and the inner wall surface of the exhaust cavity. Compared with the sliding friction in the related art, the friction resistance of the air guide cover is smaller, thereby effectively avoiding the occurrence of the stuck phenomenon and more stably ensuring the temperature uniformity in the cooking cavity.

[0008] Optionally, the rotating member comprises a first shaft segment and a second shaft segment coaxially connected, the diameter of the first shaft segment is smaller than the diameter of the second shaft segment, the annular support member is provided with a first mounting hole, and the first shaft segment is loosely fitted in the first mounting hole;

[0009] The head assembly also includes a connecting piece, which is connected to the annular support, and a second mounting hole is defined between the connecting piece and the annular support, the second mounting hole is provided with a notch on the outer circumference of the annular support, the second shaft segment is clearance-fitted in the second mounting hole, and at least a portion of the second shaft segment protrudes from the outer circumference of the annular support through the notch. The head assembly of the utility model is provided with a first shaft segment that is clearance-fitted with the first mounting hole, which ensures that the first shaft segment can rotate around the axis of the first mounting hole, while also limiting the second shaft segment in its radial direction, so that when the second shaft segment is subjected to a radial reaction force from the inner wall of the exhaust chamber, the second shaft segment will not generate a large friction force with the wall of the second mounting hole and cannot rotate freely.

[0010] Optionally, the rotating member further includes a third shaft segment, the third shaft segment is coaxially connected to the free end of the second shaft segment, the diameter of the third shaft segment is smaller than the diameter of the second shaft segment, the connecting member is provided with a third mounting hole connected to the second mounting hole, and the third shaft segment is clearance-fitted in the third mounting hole. The head assembly of the utility model is provided with a clearance fit between the third shaft segment and the third mounting hole, so that the third shaft segment and the first shaft segment jointly limit the radial position of the second shaft segment, and ensure that when the second shaft segment abuts against the inner wall surface of the exhaust chamber and undergoes relative displacement, the rotating member as a whole can still rotate relative to the annular support member, thereby ensuring that the second shaft segment and the inner wall surface of the exhaust chamber have rolling friction with less resistance.

[0011] Optionally, the connecting member is provided with a fourth mounting hole, the annular support member is provided with a first threaded hole, and the connecting member and the annular support member are connected via a first threaded member that passes through the fourth mounting hole and is threadedly engaged with the first threaded hole. The head assembly of the utility model is provided with a connecting member connected to the annular support member via a first threaded member, so that the connecting member and the annular support member are easy to assemble and disassemble, and the connection strength is high.

[0012] Optionally, one of the connecting member and the annular support member is provided with a positioning column, and the other of the connecting member and the annular support member is provided with a positioning hole, the axial direction of the positioning hole is consistent with the axial direction of the fourth mounting hole, and the positioning column is fitted in the positioning hole. By providing matching positioning columns and positioning holes, the head assembly of the utility model can use only one first threaded member to achieve relative fixation of the connecting member and the annular support member, and the assembly of the connecting member, the annular support member and the rotating member is convenient and quick.

[0013] Optionally, the annular support member includes an annular base plate and a first gear ring, the annular base plate and the connecting member are arranged axially along the annular base plate, and the first mounting hole is provided on the annular base plate; the first gear ring is coaxially arranged on the side of the annular base plate away from the connecting member, and the head assembly also includes a first motor and a second gear ring, the first motor is installed on the head, the rotating shaft of the first motor is coaxially connected to the second gear ring, and at least part of the second gear ring extends into the exhaust chamber and meshes with the first gear ring. The head assembly of the utility model uses the first motor installed on the head as the power, and realizes the driving of the annular support member and the air guide cover through the transmission mechanism formed by the first gear ring and the second gear ring. Among them, the meshing first gear ring and the second gear ring transmit the torque of the first motor stably and reliably, and occupy a small volume. Moreover, the air guide cover can rotate independently without linkage with the stirring paddle, etc., and the temperature equalization function is flexible.

[0014] Optionally, the annular support member further comprises a plurality of protrusions, the plurality of protrusions are arranged at intervals along the circumference of the annular base plate, and are disposed on a side of the annular base plate away from the first gear ring, the protrusions are provided with a second threaded hole, the peripheral wall of the air duct cover is provided with a fifth mounting hole, the protrusions are fitted in the air duct cover, and the protrusions and the air duct cover are connected by a second threaded member that passes through the fifth mounting hole and is threadedly fitted with the second threaded hole. The head assembly of the utility model is provided with an annular base plate that is coaxially connected to the air duct cover through a plurality of protrusions, so that the thickness of the annular base plate does not need to be designed to be larger on the basis of ensuring that the first gear ring is exposed outside the air duct cover, and the weight of the annular support member is lighter, thereby lowering the manufacturing cost and occupying less space in the exhaust chamber.

[0015] Optionally, the connecting piece extends along the circumference of the annular substrate, the number of the connecting piece is equal to the number of the protrusions, and the multiple connecting pieces and the multiple protrusions are staggered along the circumference of the annular substrate. The head assembly of the utility model is provided with multiple connecting pieces, and each connecting piece is fitted between two adjacent protrusions. Compared with designing the connecting piece as an annular plate structure, the above arrangement makes the total volume of the connecting piece smaller and the total weight lighter, thereby lowering the manufacturing cost and occupying less space in the exhaust cavity.

[0016] Optionally, the hot air assembly includes a second motor, a hot air fan, a heat insulation board and an electric heating pipe, wherein the second motor is installed on the machine head; the hot air fan is coaxially connected to the rotating shaft of the second motor; the heat insulation board is connected to the machine head, the heat insulation board is located between the hot air fan and the body of the second motor, and the heat insulation board is provided with an avoidance hole for the rotating shaft of the second motor to pass through; the electric heating pipe is connected to the heat insulation board and is located on the side of the heat insulation board away from the body of the second motor. The machine head assembly of the utility model effectively prevents the heat emitted by the heating pipe from flowing back to the second motor and affecting the efficiency of the second motor by providing a heat insulation board. At the same time, under the obstruction and guidance of the heat insulation board, it is ensured that the airflow generated by the hot air fan basically flows into the cooking cavity through the air guide cover, and the heat emitted by the heating pipe is also brought into the cooking cavity, thereby improving the cooking efficiency of the food in the cooking cavity.

[0017] The air fryer according to an embodiment of the utility model includes a head assembly as described in any of the above embodiments.

[0018] The technical advantages of the air fryer according to the embodiment of the utility model are the same as the technical advantages of the head assembly of the above-mentioned embodiment, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of a head assembly according to an embodiment of the utility model.

[0020] Figure 2 It is an exploded view of a nose assembly according to an embodiment of the utility model.

[0021] Figure 3 It is a cross-sectional view of a head assembly according to an embodiment of the utility model.

[0022] Figure 4 yes Figure 3 A magnified image of.

[0023] Figure 5 It is a schematic diagram of a ring wire support member, a rotating member and a connecting member in a head assembly according to an embodiment of the utility model.

[0024] Figure 6It is an exploded view of the loop support, rotating part and connecting part in the head assembly according to the embodiment of the utility model.

[0025] Figure 7 It is another schematic diagram of the loop support, the rotating member and the connecting member in the head assembly according to an embodiment of the utility model.

[0026] Figure 8 It is a cross-sectional view of the loop support, the rotating member and the connecting member in the head assembly according to the embodiment of the utility model.

[0027] Fig. 9 yes Figure 8 Enlarged view of B.

[0028] Reference numerals:

[0029] 1. Machine head; 11. Exhaust cavity; 2. Hot air assembly; 21. Second motor; 22. Hot air fan; 23. Heat insulation board; 24. Electric heating pipe; 3. Annular support member; 31. Annular base plate; 311. First mounting hole; 312. Second mounting hole; 313. First threaded hole; 314. Positioning column; 32. First gear ring; 33. Bump; 4. Rotating member; 41. First shaft section; 42. Second shaft section; 43. Third shaft section; 5. Wind guide cover; 6. Connecting member; 61. Third mounting hole; 62. Fourth mounting hole; 63. Positioning hole; 7. First motor; 8. Second gear ring; 9. First threaded member; 10. Machine cover. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0031] Combine the following Figure 1-Figure 9 A head assembly according to an embodiment of the present invention is described.

[0032] The head assembly according to the embodiment of the utility model comprises a head 1, a hot air assembly 2, an annular support 3, a rotating member 4 and an air guide hood 5. The head 1 is formed with an exhaust cavity 11 with an opening facing downward. The hot air assembly 2 is installed in the exhaust cavity 11. The annular support 3 surrounds the hot air assembly 2 and is rotatably arranged in the exhaust cavity 11. There are at least three rotating members 4 and they are arranged at intervals along the circumference of the annular support 3. The rotating member 4 is pivotally connected to the annular support 3 around a first axis, and the first axis is parallel to the center line of the annular support 3. At least part of the rotating member 4 is located between the outer peripheral surface of the annular support 3 and the inner wall surface of the exhaust cavity 11, and at least part of the rotating member 4 separates the outer peripheral surface of the annular support 3 from the inner wall surface of the exhaust cavity 11. The air guide hood 5 is coaxially connected to the annular support 3, and the air guide hood 5 is suitable for separating the hot air assembly 2 from the cooking cavity of the air fryer.

[0033] According to the head assembly of the utility model, the air guide cover 5 is coaxially connected with the annular support member 3, the annular support member 3 surrounds the hot air assembly 2 and is rotatably arranged in the exhaust cavity 11 of the head 1, the rotating member 4 rotatably mounted on the annular support member 3 partially protrudes from the outer peripheral surface of the annular support member 3 and rolls with the inner wall surface of the exhaust cavity 11, and the parts of at least three rotating members 4 located between the outer peripheral surface of the annular support member 3 and the inner wall surface of the exhaust cavity 11 separate the annular support member 3 from the inner wall surface of the exhaust cavity 11, so that when the air guide cover 5 rotates relative to the head 1, at least three rotating members 4 realize the radial limit of the air guide cover 5 in the air guide cover 5, ensuring that the air guide cover 5 rotates smoothly without excessive radial deflection. At the same time, when the air guide cover 5 rotates, rolling friction occurs between the rotating member 4 and the inner wall surface of the exhaust cavity 11. Compared with the sliding friction in the related art, the friction resistance of the air guide cover 5 is smaller, thereby effectively avoiding the occurrence of the stuck phenomenon and more stably ensuring the temperature uniformity in the cooking cavity.

[0034] It should be noted that the rotating member 4 can be a rotating shaft pivotally connected to the annular support member 3, the first axis is the center line of the rotating member 4, and the rotating member 4 can only rotate around the first axis. Alternatively, the rotating member 4 can also be a ball hinged to the annular support member 3, which can rotate around the first axis relative to the annular support member 3 to facilitate rolling cooperation with the inner wall surface of the exhaust chamber 11. In addition, the annular support member 3 and the air guide cover 5 are also relatively fixed in the axial direction with the machine head 1 through an axial support member, and the axial support member includes but is not limited to a support gear or a support bearing. The specific structure of the axial support member has been disclosed in the relevant technology and will not be described in detail here.

[0035] Furthermore, in some embodiments, Figure 5 and Figure 6 As shown, there are three rotating members 4 which are arranged at equal intervals along the circumference of the annular support member 3 .

[0036] In some embodiments, Figure 2 and Fig. 9 As shown, the rotating member 4 includes a first shaft section 41 and a second shaft section 42 which are coaxially connected. The diameter of the first shaft section 41 is smaller than the diameter of the second shaft section 42. The annular support member 3 is provided with a first mounting hole 311, and the first shaft section 41 is loosely fitted in the first mounting hole 311. The head assembly also includes a connecting member 6, which is connected to the annular support member 3. A second mounting hole 312 is defined between the connecting member 6 and the annular support member 3. The second mounting hole 312 is provided with a notch on the outer circumference of the annular support member 3. The second shaft section 42 is loosely fitted in the second mounting hole 312, and at least part of the second shaft section 42 protrudes from the outer circumference of the annular support member 3 through the notch.

[0037] The head assembly of the utility model is provided with a first shaft segment 41 and a clearance fit with the first mounting hole 311, so as to ensure that the first shaft segment 41 can rotate around the axis of the first mounting hole 311, and at the same time, the second shaft segment 42 is limited in its radial direction. Further, when the second shaft segment 42 is subjected to a radial reaction force from the inner wall of the exhaust chamber 11, the second shaft segment 42 will not generate a large friction force with the wall of the second mounting hole 312 and cannot rotate freely.

[0038] Meanwhile, the rotating installation of the rotating member 4 on the annular support member 3 can be completed by simply connecting the connecting member 6 to the annular support member 3 , and the assembly of the rotating member 4 is convenient and quick.

[0039] In some embodiments, Figure 2 and Fig. 9 As shown, the rotating member 4 also includes a third shaft segment 43, which is coaxially connected to the free end of the second shaft segment 42, and the diameter of the third shaft segment 43 is smaller than the diameter of the second shaft segment 42. The connecting member 6 is provided with a third mounting hole 61 connected to the second mounting hole 312, and the third shaft segment 43 is clearance-fitted in the third mounting hole 61.

[0040] The clearance fit between the third shaft segment 43 and the third mounting hole 61 enables the third shaft segment 43 and the first shaft segment 41 to jointly limit the radial position of the second shaft segment 42, thereby ensuring that when the second shaft segment 42 abuts against the inner wall surface of the exhaust chamber 11 and undergoes relative displacement, the rotating member 4 as a whole can still rotate relative to the annular support member 3, thereby ensuring that the second shaft segment 42 and the inner wall surface of the exhaust chamber 11 produce rolling friction with less resistance.

[0041] For example, Fig. 9As shown, the diameters and axial dimensions of the first shaft segment 41 and the third shaft segment 43 are the same, the diameters of the first mounting hole 311 and the third mounting hole 61 are the same and are both smaller than the diameter of the second mounting hole 312, and under the radial limitation of the first shaft segment 41 and the third shaft segment 43 by the first mounting hole 311 and the third mounting hole 61 respectively, the rotating member 4 is not prone to radial displacement, and the rotation of the rotating member 4 relative to the annular support member 3 is smooth and labor-saving.

[0042] In some embodiments, Figure 6 As shown, the connecting member 6 is provided with a fourth mounting hole 62 , the annular support member 3 is provided with a first threaded hole 313 , and the connecting member 6 and the annular support member 3 are connected via a first threaded member 9 that passes through the fourth mounting hole 62 and is threadedly engaged with the first threaded hole 313 .

[0043] That is, the connecting member 6 is connected to the annular support member 3 through the first threaded member 9, so that the connecting member 6 and the annular support member 3 are easy to assemble and disassemble, and the connection strength is high.

[0044] For example, Figure 5 and Figure 6 As shown, the first threaded member 9 is a bolt, the axial direction of the first threaded hole 313 is consistent with the axial direction of the annular support member 3, and the bolt passes through the fourth mounting hole 62 and is threadedly connected to the first threaded hole 313 to complete the connection between the connecting member 6 and the annular support member 3.

[0045] In some embodiments, Figure 5 and Figure 6 As shown, one of the connecting member 6 and the annular support member 3 is provided with a positioning column 314, and the other of the connecting member 6 and the annular support member 3 is provided with a positioning hole 63, the axial direction of the positioning hole 63 is consistent with the axial direction of the fourth mounting hole 62, and the positioning column 314 is fitted in the positioning hole 63.

[0046] By providing matching positioning columns 314 and positioning holes 63, a connecting member 6 can be relatively fixed to the annular support member 3 using only one first threaded member 9, and the assembly of the connecting member 6, the annular support member 3 and the rotating member 4 is convenient and quick.

[0047] For example, Figure 5 and Figure 6 As shown, each connecting member 6 corresponds to a fourth mounting hole 62 and a positioning hole 63 , the axial direction of the positioning hole 63 is consistent with the axial direction of the fourth mounting hole 62 , and the positioning hole 63 and the fourth mounting hole 62 are arranged at intervals along the circumferential direction of the annular support member 3 .

[0048] In some embodiments, the annular support member 3 includes an annular base plate 31 and a first gear ring 32. The annular base plate 31 and the connecting member 6 are arranged along the axial direction of the annular base plate 31, and the first mounting hole 311 is provided on the annular base plate 31. The first gear ring 32 is coaxially arranged on the side of the annular base plate 31 away from the connecting member 6. The head assembly also includes a first motor 7 and a second gear ring 8. The first motor 7 is installed on the head 1. The rotating shaft of the first motor 7 is coaxially connected to the second gear ring 8. At least a portion of the second gear ring 8 extends into the exhaust cavity 11 and meshes with the first gear ring 32.

[0049] The first motor 7 installed on the machine head 1 is used as the power, and the transmission mechanism formed by the first gear ring 32 and the second gear ring 8 realizes the driving of the annular support 3 and the air guide cover 5. Among them, the meshing first gear ring 32 and the second gear ring 8 transmit the torque of the first motor 7 stably and reliably, and occupy a small volume. Moreover, the air guide cover 5 can rotate independently without linkage with the stirring paddle, etc., and the temperature equalization function is flexible.

[0050] At the same time, under the radial limitation of at least three rotating members 4, the radial force acting on the first gear ring 32 when the second gear ring 8 drives the first gear ring 32 to rotate can be well offset, effectively ensuring that the air guide cover 5 rotates stably and reliably relative to the machine head 1. Moreover, when the air guide cover 5 is connected to the stirring paddle in the cooking chamber, a greater stirring torque can be given to the stirring paddle.

[0051] In some embodiments, Figure 5 and Figure 7 As shown, the annular support member 3 further includes a plurality of protrusions 33, which are arranged at intervals along the circumferential direction of the annular base plate 31 and are disposed on a side of the annular base plate 31 away from the first gear ring 32. A second threaded hole is provided on the protrusion 33, and a fifth mounting hole is provided on the peripheral wall of the air guide cover 5. The protrusion 33 is fitted in the air guide cover 5, and the protrusion 33 and the air guide cover 5 are connected via a second threaded member that passes through the fifth mounting hole and is threadedly fitted with the second threaded hole.

[0052] That is, the annular base plate 31 is coaxially connected to the air guide cover 5 through a plurality of protrusions 33. On the basis of ensuring that the first gear ring 32 is exposed outside the air guide cover 5, the thickness of the annular base plate 31 does not need to be designed to be larger, and the weight of the annular support 3 is lighter, thereby lowering the manufacturing cost and occupying less space in the exhaust chamber 11.

[0053] For example, Figure 6 As shown, there are three protrusions 33 which are arranged at equal intervals along the circumference of the annular base plate 31. Each protrusion 33 is provided with a second threaded hole. When the three protrusions 33 are fitted in the air guide cover 5, the surface of the protrusion 33 with the second threaded hole is in contact with the inner circumferential wall of the air guide cover 5.

[0054] In some embodiments, Figure 5 and Figure 6 As shown, the connector 6 extends along the circumference of the annular base plate 31, the number of connectors 6 is equal to the number of protrusions 33, and multiple connectors 6 and multiple protrusions 33 are staggered along the circumference of the annular base plate 31. By providing multiple connectors 6 and each connector 6 is fitted between two adjacent protrusions 33, compared with designing the connector 6 as an annular plate structure, the above arrangement makes the total volume of the connector 6 smaller and the total weight lighter, thereby lowering the manufacturing cost and occupying less space in the exhaust cavity 11.

[0055] Specifically, Figure 5 As shown, a second mounting hole 312 is defined between each connecting member 6 and the annular base 31, and the two ends of the connecting member 6 along the circumference of the annular base 31 are respectively abutted against two protrusions 33, and the surface of the annular base 31 facing away from the annular base 31 is roughly coplanar with the surface of the protrusion 33 facing away from the annular base 31.

[0056] In some embodiments, Figure 2 and Figure 3 As shown, the hot air assembly 2 includes a second motor 21, a hot air fan 22, a heat shield 23 and an electric heating pipe 24. The second motor 21 is mounted on the machine head 1. The hot air fan 22 is coaxially connected to the rotating shaft of the second motor 21. The heat shield 23 is connected to the machine head 1, and the heat shield 23 is located between the hot air fan 22 and the body of the second motor 21. The heat shield 23 is provided with an avoidance hole for the rotating shaft of the second motor 21 to pass through. The electric heating pipe 24 is connected to the heat shield 23 and is located on the side of the heat shield 23 away from the body of the second motor 21.

[0057] The heat insulation board 23 disposed between the second motor 21 and the heating tube effectively prevents the heat generated by the heating tube from flowing back to the second motor 21 and affecting the efficiency and service life of the second motor 21. At the same time, under the blocking and guidance of the heat insulation board 23, it is ensured that the airflow generated by the hot air fan 22 basically flows into the cooking cavity through the air guide cover 5, and also brings the heat generated by the heating tube into the cooking cavity, thereby improving the cooking efficiency of the food in the cooking cavity.

[0058] For example, Figure 1 and Figure 3 As shown, the heating pipe is an annular pipe arranged around the hot air fan 22 and is spaced apart from the peripheral wall of the air guide cover 5.

[0059] It should be noted that Figure 1 As shown, the machine head assembly also includes a machine cover 10, which is detachably connected to the machine head 1, and the two are suitable for covering the inner pot together. The machine cover 10 is arranged around the machine head 1 and is made of transparent glass.

[0060] The air fryer according to the embodiment of the utility model comprises a head assembly as in any of the above embodiments.

[0061] The technical advantages of the air fryer according to the embodiment of the utility model are the same as the technical advantages of the head assembly of the above-mentioned embodiment, which will not be repeated here.

[0062] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0063] In addition, 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. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0064] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0066] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0067] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A head assembly, It is characterized in that include: A machine head (1), wherein the machine head (1) is formed with an exhaust cavity (11) opening downward; A hot air component (2), wherein the hot air component (2) is installed in the exhaust cavity (11); an annular support member (3), the annular support member (3) surrounding the hot air assembly (2) and rotatably disposed in the exhaust cavity (11); a rotating member (4), the rotating members (4) being at least three and arranged at intervals along the circumference of the annular support member (3); the rotating member (4) being pivotally connected to the annular support member (3) around a first axis, the first axis being parallel to the center line of the annular support member (3); at least a portion of the rotating member (4) being located between the outer circumferential surface of the annular support member (3) and the inner wall surface of the exhaust cavity (11); and at least a portion of the rotating member (4) separating the outer circumferential surface of the annular support member (3) from the inner wall surface of the exhaust cavity (11); and An air guide cover (5), wherein the air guide cover (5) is coaxially connected to the annular support member (3), and the air guide cover (5) is suitable for separating the hot air component (2) from the cooking cavity of the air fryer.

2. The head assembly according to claim 1, It is characterized in that The rotating member (4) comprises a first shaft segment (41) and a second shaft segment (42) which are coaxially connected, the diameter of the first shaft segment (41) is smaller than the diameter of the second shaft segment (42), the annular support member (3) is provided with a first mounting hole (311), and the first shaft segment (41) is loosely fitted in the first mounting hole (311); The head assembly also includes a connecting member (6), which is connected to the annular support member (3), and a second mounting hole (312) is defined between the connecting member (6) and the annular support member (3). The second mounting hole (312) is provided with a notch on the outer peripheral surface of the annular support member (3), and the second shaft segment (42) is loosely fitted in the second mounting hole (312), and at least a portion of the second shaft segment (42) protrudes from the outer peripheral surface of the annular support member (3) through the notch.

3. The head assembly according to claim 2, It is characterized in that The rotating member (4) further comprises a third shaft segment (43), the third shaft segment (43) being coaxially connected to the free end of the second shaft segment (42), the diameter of the third shaft segment (43) being smaller than the diameter of the second shaft segment (42), the connecting member (6) being provided with a third mounting hole (61) communicating with the second mounting hole (312), the third shaft segment (43) being loosely fitted in the third mounting hole (61).

4. The head assembly according to claim 2, It is characterized in that The connecting member (6) is provided with a fourth mounting hole (62), the annular support member (3) is provided with a first threaded hole (313), and the connecting member (6) and the annular support member (3) are connected via a first threaded member (9) that passes through the fourth mounting hole (62) and is threadedly engaged with the first threaded hole (313).

5. The head assembly according to claim 4, It is characterized in that One of the connecting member (6) and the annular support member (3) is provided with a positioning column (314), and the other of the connecting member (6) and the annular support member (3) is provided with a positioning hole (63), the axial direction of the positioning hole (63) is consistent with the axial direction of the fourth mounting hole (62), and the positioning column (314) is fitted in the positioning hole (63).

6. The head assembly according to any one of claims 2 to 5, It is characterized in that The annular support member (3) comprises: an annular substrate (31), the annular substrate (31) and the connecting member (6) being arranged along the axial direction of the annular substrate (31), and the first mounting hole (311) being provided on the annular substrate (31); and A first gear ring (32), wherein the first gear ring (32) is coaxially arranged on a side of the annular base plate (31) away from the connecting member (6), and the head assembly further comprises a first motor (7) and a second gear ring (8), wherein the first motor (7) is mounted on the head (1), and a rotating shaft of the first motor (7) is coaxially connected to the second gear ring (8), and at least a portion of the second gear ring (8) extends into the exhaust chamber (11) and meshes with the first gear ring (32).

7. The head assembly according to claim 6, It is characterized in that The annular support member (3) further comprises a plurality of protrusions (33), the plurality of protrusions (33) being arranged at intervals along the circumference of the annular base plate (31) and being arranged on a side of the annular base plate (31) away from the first gear ring (32), the protrusions (33) being provided with a second threaded hole, the peripheral wall of the air guide cover (5) being provided with a fifth mounting hole, the protrusions (33) being fitted in the air guide cover (5), the protrusions (33) and the air guide cover (5) being connected via a second threaded member passing through the fifth mounting hole and threadably fitted with the second threaded hole.

8. The head assembly according to claim 7, It is characterized in that The connecting member (6) extends along the circumference of the annular substrate (31); the number of the connecting members (6) is equal to the number of the protrusions (33); and a plurality of the connecting members (6) and a plurality of the protrusions (33) are arranged alternately along the circumference of the annular substrate (31).

9. The head assembly according to claim 1, It is characterized in that The hot air component (2) comprises: A second motor (21), the second motor (21) being mounted on the machine head (1); a hot air fan (22), the hot air fan (22) being coaxially connected to the rotating shaft of the second motor (21); a heat insulation board (23), the heat insulation board (23) being connected to the machine head (1), the heat insulation board (23) being located between the hot air fan (22) and the body of the second motor (21), the heat insulation board (23) being provided with an avoidance hole for the rotation shaft of the second motor (21) to pass through; and An electric heating pipe (24), the electric heating pipe (24) being connected to the heat insulation board (23) and being located on a side of the heat insulation board (23) facing away from the body of the second motor (21).

10. An air fryer, It is characterized in that Comprising a head assembly according to any one of claims 1-9.

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