CN219629409U - Air fryer - Google Patents

Abstract

The utility model discloses an air fryer, which belongs to the field of household appliances and solves the problem that the service life of a shaft sealing element is shortened due to higher loss of the shaft sealing element. The utility model is mainly used for effectively reducing the loss of the shaft sealing element and guaranteeing the service life of the shaft sealing element.

Description

Air fryer

Technical Field

The utility model relates to a household appliance, in particular to an air fryer.

Background

The air fryer generally comprises a machine body, wherein the machine body is provided with a cooking cavity and a hot air component for conveying hot air to the cooking cavity, the hot air component comprises a motor, an air supply fan and a heating piece, the machine body is provided with a heat shield for separating the motor and the heating piece, the air supply fan and the heating piece are positioned on one side of the heat shield, the motor is positioned on the other side of the heat shield, the air supply fan is arranged at the front end of an output shaft of the motor, a radiator fan is arranged on the other side of the heat shield on the output shaft of the motor, a large gap is generally reserved between the output shaft of the motor of the existing air fryer and the heat shield, so that the output shaft of the motor and a shaft hole of the heat shield are prevented from being scratched and interfered, but the arrangement is easy to cause poor tightness of the cooking cavity, and thus the cooking taste is influenced. Of course, among the prior art, also have the shaft hole at the heat exchanger set up shaft seal spare in order to improve the relatively poor problem of leakproofness, as the patent application of application number CN202121141658.6 discloses a sealed drive structure of air fryer, including cup jointing the axle sleeve in the outside of motor shaft, the upper end of axle sleeve and the epaxial jump ring of motor cooperate and press from both sides tight location installation to the radiator fan that is located the control area of wind channel board top, be provided with the perforation that supplies the axle sleeve to pass on the wind channel board, be used for shutoff the perforation oil blanket on the wind channel board, the oil blanket cup joints in the outside of axle sleeve, because the machining precision of axle sleeve is lower, axle sleeve and oil blanket direct contact can accelerate the speed of wearing and tearing oil blanket, influence the life of oil blanket.

Disclosure of Invention

The utility model aims to provide an air fryer, which solves the problem of shortened service life of a shaft sealing element caused by higher loss of the shaft sealing element, effectively reduces the loss of the shaft sealing element and ensures the service life of the shaft sealing element.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides an air fryer, including the organism, the organism is equipped with the cooking cavity and carries hot-blast subassembly to the cooking cavity, hot-blast subassembly includes the motor, supply air fan and heating element, supply air fan axial positioning is in the front end of the output shaft of motor, supply air fan drives rotatory production air current by the motor, the heating element is used for heating the air current, the organism is equipped with the heat exchanger that separates motor and heating element, supply air fan and heating element are located one side of heat exchanger, the motor is located the opposite side of heat exchanger, be equipped with radiator fan on the output shaft of motor in the opposite side of heat exchanger, the heat exchanger is equipped with the shaft hole that supplies the output shaft to pass, be equipped with first setting element and the second setting element that is used for axial positioning radiator fan on the output shaft, first setting element and second setting element are located radiator fan's both sides respectively, the second setting element is close to the shaft hole relatively, shaft hole department is equipped with output shaft complex shaft seal piece, shaft seal piece axial positioning is located the heat exchanger.

After the technical scheme is adopted, the utility model has the following advantages: firstly, radiator fan obtains axial positioning through first setting element and second setting element, save the axle sleeve, the structure is simpler, the cost is lower, secondly, first setting element and second setting element are located radiator fan's both sides respectively, radiator fan obtains the centre gripping location of two opposite directions, promote radiator fan's reliability of installation, and, because the machining precision of output shaft is higher, surface roughness compares the axle sleeve lower, the axle seal piece is direct with output shaft complex, effectively reduce the loss of axle seal piece, guarantee the life of axle seal piece, finally, because the position of heat exchanger is fixed relatively, axle seal piece axial positioning is located the heat exchanger, make the installation of axle seal piece more reliable, be difficult for droing.

Further, the first positioning piece comprises a first clamping spring arranged on the output shaft, and the cooling fan is propped against the first clamping spring to be positioned; or the first positioning piece comprises a first clamp spring and a first gasket, the first gasket is attached to the first clamp spring, and the cooling fan is abutted against the first gasket for positioning; or the first positioning piece comprises a shaft shoulder arranged on the output shaft, and the cooling fan is propped against the shaft shoulder to be positioned; or, the first positioning piece comprises a shaft sleeve sleeved on the output shaft, the rear end of the shaft sleeve is propped against the front end cover of the motor, and the cooling fan is propped against the front end of the shaft sleeve to be positioned. By adopting the technical scheme, the radiator fan is always subjected to the pretightening force of the first clamp spring by arranging the first clamp spring, so that the radiator fan is more firmly installed, and the radiator fan is effectively prevented from shaking; or, the first gasket is arranged to fill the mounting gap between the first clamp spring and the cooling fan, so that the cooling fan is fixed more stably, and the first gasket plays a certain buffering role to avoid the phenomenon of cracking caused by local stress concentration of the cooling fan; the cooling fan is propped against the shaft shoulder to be positioned, the shaft shoulder and the output shaft are integrally formed, the structural strength is high, the cooling fan is more firmly installed, the number of parts can be reduced, and the cooling fan is convenient to install; or, the shaft sleeve is arranged, so that the cooling fan can not move up and down when the cooling fan rotates, and the stability of the cooling fan is ensured.

Further, the output shaft is provided with a first thread, the second positioning piece comprises a first nut, and the first nut is matched with the first thread and is tightly attached to the cooling fan; or, the output shaft is provided with a first thread, the second positioning piece comprises a first nut and a second gasket, and the first nut is matched with the first thread to enable the second gasket to be tightly attached to the cooling fan. By adopting the technical scheme, the first nut is matched with the first thread and is tightly attached to the cooling fan, so that the cooling fan is fixed and is convenient to detach; or the second gasket is tightly attached to the cooling fan, and fills the installation gap between the first nut and the cooling fan, so that the cooling fan is fixed more stably, and the second gasket plays a certain buffering role, so that the phenomenon of cracking caused by local stress concentration of the cooling fan is avoided.

Further, a third positioning piece and a fourth positioning piece for axially positioning the air supply fan are arranged on the output shaft, the third positioning piece and the fourth positioning piece are respectively positioned on two sides of the air supply fan, and the third positioning piece is close to the shaft hole relative to the fourth positioning piece. By adopting the technical scheme, firstly, the air supply fan obtains axial positioning through the third positioning piece and the fourth positioning piece, the shaft sleeve is omitted, the structure is simpler, the cost is lower, secondly, the third positioning piece and the fourth positioning piece are respectively positioned at two sides of the air supply fan, the air supply fan obtains clamping positioning in two opposite directions, and the installation reliability of the air supply fan is improved.

Further, the third positioning piece comprises a second clamping spring arranged on the output shaft, and the air supply fan is propped against the second clamping spring to be positioned; or, the third positioning piece comprises a second clamp spring and a third gasket, the third gasket is attached to the second clamp spring, and the air supply fan is abutted against the third gasket for positioning. By adopting the technical scheme, the second clamp spring is arranged, so that the air supply fan is always subjected to the pretightening force of the second clamp spring, the air supply fan is more firmly installed, and the shaking of the air supply fan is effectively avoided; or, support in the third gasket through the air supply fan, effectively increase the area of force of air supply fan, reduce the pressure of air supply fan, avoid air supply fan to take place deformation, also can make air supply fan receive reliable positioning action, effectively prevent air supply fan to take place not hard up, make air supply fan's installation more firm.

Further, the output shaft is provided with second threads, the fourth locating piece comprises a second nut and a fourth gasket, and the second nut is matched with the second threads to enable the fourth gasket to be tightly attached to the air supply fan. By adopting the technical scheme, the second nut is matched with the second thread and is tightly attached to the air supply fan, so that the air supply fan is fixed, and the disassembly is convenient; or, the fourth gasket is tightly attached to the air supply fan, and fills the installation gap between the second nut and the air supply fan, so that the air supply fan is fixed more stably, and the fourth gasket plays a certain buffering role, so that the phenomenon of cracking caused by local stress concentration of the air supply fan is avoided.

Further, the output shaft comprises a first section with a larger diameter and a second section with a smaller diameter, the second section is connected to the front end of the first section, the cooling fan is arranged on the first section, and the shaft sealing piece and the air supply fan are arranged on the second section. By adopting the technical scheme, the cooling fan arranged on the first section, the shaft sealing element arranged on the second section and the air supply fan are arranged separately, and the installation is more reasonable, as the rotation radius is smaller, the linear speed is smaller, the shaft sealing element is arranged on the second section with smaller diameter, the abrasion to the shaft sealing element is effectively reduced, and the service life of the shaft sealing element is further ensured.

Further, the diameter of the shaft hole is smaller than the outer diameter of the shaft sealing piece, the heat shield is provided with a shaft seal pressing plate, and the shaft seal pressing plate presses the shaft sealing piece on the heat shield to be axially positioned. By adopting the technical scheme, the diameter of the shaft hole is smaller than the outer diameter of the shaft sealing element, so that the shaft sealing element can completely cover the shaft hole, the sealing performance is good, and the shaft sealing element is pressed on the heat shield to be axially positioned through the shaft sealing pressing plate, so that the shaft sealing element is prevented from being separated from the shaft hole, and the sealing effect of the shaft sealing element on the shaft hole is ensured.

Further, the periphery of the shaft sealing piece is provided with a first extending ring and a second extending ring, a positioning groove for the heat shield to be inserted is formed between the first extending ring and the second extending ring, the first extending ring is clung to one side of the heat shield, and the second extending ring is clung to the other side of the heat shield. By adopting the technical scheme, the heat shield is inserted into the positioning groove and then clings to the first extension ring and the second extension ring, so that the connection strength of the heat shield and the shaft sealing piece is improved, and the sealing performance between the heat shield and the shaft sealing piece is improved by increasing the contact area between the heat shield and the shaft sealing piece.

Further, one side of the heat shield is provided with a first connecting surface attached to the first extending ring, the other side of the heat shield is provided with a second connecting surface attached to the second extending ring, and the first connecting surface and the second connecting surface are staggered in the radial direction. By adopting the technical scheme, the first connecting surface is attached to the first extending ring, the second connecting surface is attached to the second extending ring, the attaching area is increased, the sealing performance of the heat shield and the shaft sealing piece is further increased, the first connecting surface and the second connecting surface are staggered in the radial direction, the deformation amount of the first extending ring and the second extending ring is increased, and therefore the friction force between the first extending ring and the first connecting surface is increased, the friction force between the second extending ring and the second connecting surface is increased, and the shaft sealing piece is facilitated to clamp the heat shield.

Drawings

The utility model is further described below with reference to the accompanying drawings:

FIG. 1 is a schematic diagram of an air fryer in accordance with a first embodiment of the utility model;

FIG. 2 is an enlarged view of the structure A of FIG. 1 in accordance with the present utility model;

FIG. 3 is an enlarged view of the structure at B in FIG. 2 in accordance with the present utility model;

FIG. 4 is a schematic view of a bottom bracket seal according to an embodiment of the present utility model;

FIG. 5 is a cross-sectional view of a bottom bracket seal in accordance with an embodiment of the present utility model;

FIG. 6 is a schematic view showing a partial structure of an air fryer in a second embodiment of the utility model;

FIG. 7 is an enlarged view of the structure at C in FIG. 6 in accordance with the present utility model;

FIG. 8 is a schematic view showing a partial construction of an air fryer in a third embodiment of the utility model;

FIG. 9 is an enlarged view of the structure at D of FIG. 8 in accordance with the present utility model;

FIG. 10 is a schematic view showing a partial construction of an air fryer in a fourth embodiment of the utility model;

FIG. 11 is an enlarged view of the structure at E of FIG. 10 in accordance with the present utility model;

FIG. 12 is a schematic view showing a partial construction of an air fryer in a fifth embodiment of the utility model;

FIG. 13 is an enlarged view of the structure F of FIG. 12 in accordance with the present utility model;

FIG. 14 is a schematic view showing a partial structure of an air fryer in a sixth embodiment of the utility model;

FIG. 15 is an enlarged view of the structure G of FIG. 14 in accordance with the present utility model;

FIG. 16 is a schematic view showing a partial construction of an air fryer in a seventh embodiment of the utility model;

FIG. 17 is an enlarged view of the structure at H of FIG. 16 in accordance with the present utility model;

FIG. 18 is a schematic view showing a partial construction of an air fryer in accordance with an eighth embodiment of the utility model;

FIG. 19 is an enlarged view of the structure at I in FIG. 18 in accordance with the present utility model;

FIG. 20 is a schematic view of a partial construction of an air fryer in accordance with a ninth embodiment of the utility model;

FIG. 21 is an enlarged view of the structure J of FIG. 20 in accordance with the present utility model;

in the figure, 1, a machine body; 11. a cooking cavity; 12. a motor; 121. an output shaft; 122. a shaft shoulder; 123. a first thread; 124. a second thread; 125. a first section; 126. a second section; 13. an air supply fan; 14. a heating member; 15. a heat shield; 151. a shaft hole; 152. a first connection surface; 153. a second connection surface; 16. a heat radiation fan; 21. a first clamp spring; 22. a first gasket; 23. a shaft sleeve; 24. a first nut; 25. a second gasket; 26. a second clamp spring; 27. a third gasket; 28. a second nut; 29. a fourth gasket; 31. a shaft seal; 311. a first extension ring; 312. a second extension ring; 313. a positioning groove; 32. and a shaft seal pressing plate.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments.

The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein.

It should be understood that, in various embodiments of the present utility model, the size of the sequence numbers of each process is not meant to indicate the order of execution, and the order of execution of each process should be determined by its functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present utility model.

It should be understood that in the present utility model, "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements that are expressly listed or inherent to such process, method, article, or apparatus.

It should be understood that in the present utility model, "plurality" means two or more. "and/or" is merely an association relationship describing an association object, meaning that three relationships may exist, for example, X and/or Y may represent: x alone, X and Y together, and Y alone. The character "/" generally indicates that the context-dependent object is an "or" relationship. "comprising X, Y and Z", "comprising X, Y, Z" means that all three of X, Y, Z comprise, "comprising X, Y or Z" means that one of the three comprises X, Y, Z, and "comprising X, Y and/or Z" means that any one or any two or three of the three comprise X, Y, Z.

The technical scheme of the utility model is described in detail below by specific examples. The following specific embodiments may be combined with or replaced with each other according to actual situations, and the same or similar concepts or processes may not be described in detail in some embodiments.

Embodiment one:

as shown in fig. 1 to 5, the present utility model provides an air fryer, which comprises a machine body 1, the machine body 1 is provided with a cooking cavity 11 and a hot air component for delivering hot air to the cooking cavity 11, the hot air component comprises a motor 12, an air supply fan 13 and a heating element 14, the air supply fan 13 is axially positioned at the front end of an output shaft 121 of the motor 12, the air supply fan 13 is driven by the motor 12 to rotate to generate air flow, the heating element 14 is used for heating the air flow, the machine body 1 is provided with a heat insulation cover 15 for separating the motor 12 and the heating element 14, the air supply fan 13 and the heating element 14 are positioned at one side of the heat insulation cover 15, the motor 12 is positioned at the other side of the heat insulation cover 15, the output shaft 121 of the motor 12 is provided with a heat dissipation fan 16 at the other side of the heat insulation cover 15, the heat insulation cover 15 is provided with a shaft hole 151 for the output shaft 121 to pass through, the output shaft 121 is provided with a first positioning element and a second positioning element for axially positioning the heat dissipation fan 16, the first positioning element and the second positioning element are respectively positioned at two sides of the heat dissipation fan 16, the second positioning element is relatively close to the shaft hole 151, the shaft hole 151 is provided with a shaft sealing element 31 matched with the output shaft 121, and the shaft sealing element 31 is axially positioned at the shaft sealing element 31 and is axially positioned at the heat insulation cover 15.

Firstly, radiator fan 16 obtains axial positioning through first setting element and second setting element, save axle sleeve 23, the structure is simpler, the cost is lower, secondly, first setting element and second setting element are located radiator fan 16's both sides respectively, radiator fan 16 obtains the centre gripping location of two opposite directions, promote radiator fan 16 installation's reliability, and because output shaft 121's machining precision is higher, surface roughness is lower than axle sleeve 23, shaft seal 31 is direct with output shaft 121 cooperation, effectively reduce shaft seal 31's loss, guarantee shaft seal 31's life, finally, because heat exchanger 15's position is relatively fixed, shaft seal 31 axial positioning is in heat exchanger 15, make shaft seal 31's installation more reliable, be difficult for droing.

It should be noted that the heating element 14 may be a heating tube or a heating plate, and is not limited thereto.

The diameters of the output shaft 121 are the same throughout.

In order to further ensure the sealing effect of the shaft seal 31 on the shaft hole 151, the outer periphery of the shaft seal 31 is provided with a first extension ring 311 and a second extension ring 312, a positioning groove 313 for inserting the heat shield 15 is formed between the first extension ring 311 and the second extension ring 312, the first extension ring 311 is clung to one side of the heat shield 15, and the second extension ring 312 is clung to the other side of the heat shield 15. The heat shield 15 is inserted into the positioning groove 313 and then is closely attached to the first extension ring 311 and the second extension ring 312, so that the connection strength of the heat shield 15 and the shaft seal 31 is improved, and the sealing performance between the heat shield 15 and the shaft seal 31 is improved by increasing the contact area between the heat shield 15 and the shaft seal 31.

In order to facilitate the installation of the heat shield 15, the distance between the inner wall of the positioning groove 313 and the inner wall of the shaft hole 151 in the radial direction of the shaft seal 31 is D1, and the D1 may be 0.6mm, 1.1mm, 1.6mm, 2.1mm, 2.6mm, etc. with reasonable dimensions, it may be ensured that the shaft seal 31 is installed on the heat shield 15 with a certain radial clearance, so as to reduce the assembly precision requirement of the shaft seal 31 and facilitate the assembly.

When the shaft seal 31 is mounted, the first extension ring 311 may be mounted above the second extension ring 312, or the first extension ring 311 may be mounted below the second extension ring 312.

And, a first connection surface 152 that is bonded to the first extension ring 311 is provided on one side of the heat shield 15, and a second connection surface 153 that is bonded to the second extension ring 312 is provided on the other side, and the first connection surface 152 and the second connection surface 153 are offset in the radial direction. The first connecting surface 152 is attached to the first extending ring 311, the second connecting surface 153 is attached to the second extending ring 312, the attaching area is increased, the sealing performance of the heat shield 15 and the shaft seal member 31 is further increased, secondly, the first connecting surface 152 and the second connecting surface 153 are staggered in the radial direction, the deformation amount of the first extending ring 311 and the second extending ring 312 is increased, and therefore the friction force between the first extending ring 311 and the first connecting surface 152 and the friction force between the second extending ring 312 and the second connecting surface 153 are increased, the shaft seal member 31 is facilitated to clamp the heat shield 15, the heat dissipation fan 16 is installed reliably, the first positioning member comprises a first clamping spring 21 installed on the output shaft 121, and the heat dissipation fan 16 is positioned against the first clamping spring 21. The radiator fan 16 is always subjected to the pretightening force of the first clamp spring 21, so that the radiator fan 16 is more firmly installed, and the radiator fan 16 is effectively prevented from shaking.

And, the output shaft 121 is provided with a first thread 123, the second positioning member includes a first nut 24, and the first nut 24 is matched with the first thread 123 and is closely attached to the cooling fan 16. The first nut 24 is matched with the first thread 123 and is tightly attached to the cooling fan 16, so that the cooling fan 16 is fixed, and the cooling fan is convenient to detach.

In order to make the installation of the air supply fan 13 more reliable, the output shaft 121 is provided with a third positioning member and a fourth positioning member for axially positioning the air supply fan 13, the third positioning member and the fourth positioning member are respectively positioned at two sides of the air supply fan 13, and the third positioning member is close to the shaft hole 151 relative to the fourth positioning member. Firstly, the air supply fan 13 obtains axial positioning through third setting element and fourth setting element, omits axle sleeve 23, and the structure is simpler, and the cost is lower, and secondly, third setting element and fourth setting element are located air supply fan 13's both sides respectively, and air supply fan 13 obtains the centre gripping location of two opposite directions, promotes air supply fan 13 installation's reliability.

Specifically, the third positioning element includes a second clamping spring 26 installed on the output shaft 121, and the air supply fan 13 abuts against the second clamping spring 26 to be positioned. The air supply fan 13 is always subjected to the pretightening force of the second clamp spring 26, so that the air supply fan 13 is more firmly installed, and the shaking of the air supply fan 13 is effectively avoided.

And, the output shaft 121 is provided with a second screw thread 124, the fourth positioning member includes a second nut 28, and the second nut 28 is matched with the second screw thread 124 and is closely attached to the blower fan 13. The second nut 28 is matched with the second thread 124 and is tightly attached to the air supply fan 13, so that the air supply fan 13 is fixed, and the disassembly is convenient.

Embodiment two:

as shown in fig. 6 and 7, in the present embodiment, the output shaft 121 includes a first section 125 having a larger diameter and a second section 126 having a smaller diameter, the second section 126 is connected to the front end of the first section 125, the heat radiation fan 16 is mounted to the first section 125, and the shaft seal 31 and the blower fan 13 are mounted to the second section 126. The cooling fan 16 installed on the first section 125, the shaft sealing element 31 installed on the second section 126 and the air supply fan 13 can be separately arranged, the installation is more reasonable, and the shaft sealing element 31 is installed on the second section 126 with smaller diameter due to smaller rotation radius and smaller linear speed, so that the abrasion of the shaft sealing element 31 is effectively reduced, and the service life of the shaft sealing element 31 is further ensured.

Other matters not described in this embodiment can refer to embodiment one.

Embodiment III:

as shown in fig. 8 and 9, in the present embodiment, the diameter of the shaft hole 151 is smaller than the outer diameter of the shaft seal member 31, and the heat shield 15 is provided with a shaft seal pressing plate 32, and the shaft seal pressing plate 32 presses the shaft seal member 31 against the heat shield 15 to be positioned axially. Because the diameter of the shaft hole 151 is smaller than the outer diameter of the shaft seal member 31, the shaft seal member 31 can completely cover the shaft hole 151, the sealing performance is good, and the shaft seal member 31 is pressed on the heat shield 15 through the shaft seal pressing plate 32 to be axially positioned, so that the shaft seal member 31 is prevented from being separated from the shaft hole 151, and the sealing effect of the shaft seal member 31 on the shaft hole 151 is ensured.

Other matters not described in this embodiment can refer to the above-described embodiments.

Embodiment four:

as shown in fig. 10 and 11, in the present embodiment, the first positioning member includes a first clamp spring 21 and a first spacer 22, the first spacer 22 is attached to the first clamp spring 21, and the heat dissipating fan 16 is positioned against the first spacer 22. By arranging the first gasket 22, the mounting gap between the first clamp spring 21 and the cooling fan 16 is filled, so that the cooling fan 16 is fixed more stably, and the first gasket 22 plays a certain role in buffering, so that the phenomenon of cracking caused by local stress concentration of the cooling fan 16 is avoided.

Other matters not described in this embodiment can refer to the above-described embodiments.

Fifth embodiment:

as shown in fig. 12 and 13, in the present embodiment, the first positioning member includes a shoulder 122 provided on the output shaft 121, and the heat dissipating fan 16 is positioned against the shoulder 122. Because the shaft shoulder 122 and the output shaft 121 are integrally formed, the structural strength is high, the installation of the cooling fan 16 is firmer, the number of parts can be reduced, and the installation is convenient.

Other matters not described in this embodiment can refer to the above-described embodiments.

Example six:

as shown in fig. 14 and 15, in the present embodiment, the first positioning member includes a shaft sleeve 23 fitted over the output shaft 121, the rear end of the shaft sleeve 23 abuts against the front end cover of the motor 12, and the heat radiation fan 16 is positioned against the front end of the shaft sleeve 23. The shaft sleeve 23 is arranged, so that the cooling fan 16 can not move up and down when the cooling fan 16 rotates, and the stability of the cooling fan 16 is ensured.

Other matters not described in this embodiment can refer to the above-described embodiments.

Embodiment seven:

as shown in fig. 16 and 17, in the present embodiment, the output shaft 121 is provided with a first thread 123, and the second positioning member includes a first nut 24 and a second washer 25, and the first nut 24 cooperates with the first thread 123 to make the second washer 25 abut against the heat dissipating fan 16. The second gasket 25 can fill the installation gap between the first nut 24 and the cooling fan 16, so that the cooling fan 16 is fixed more stably, and the second gasket 25 plays a certain role in buffering, so that the phenomenon of cracking caused by local stress concentration of the cooling fan 16 is avoided.

Other matters not described in this embodiment can refer to the above-described embodiments.

Example eight:

as shown in fig. 18 and 19, in the present embodiment, the third positioning member includes a second clamp spring 26 and a third gasket 27, the third gasket 27 is attached to the second clamp spring 26, and the blower fan 13 is positioned against the third gasket 27. Through setting up third gasket 27, effectively increase the area of force of air supply fan 13, reduce the pressure of air supply fan 13, avoid air supply fan 13 to take place deformation, also can make air supply fan 13 receive reliable positioning action, effectively prevent air supply fan 13 to take place not hard up, make air supply fan 13's installation more firm.

Other matters not described in this embodiment can refer to the above-described embodiments.

Example nine:

as shown in fig. 20 and 21, in the present embodiment, the output shaft 121 is provided with a second thread 124, and the fourth positioning member includes a second nut 28 and a fourth gasket 29, and the second nut 28 cooperates with the second thread 124 to make the fourth gasket 29 abut against the blower fan 13. By providing the above structure, the fourth gasket 29 can fill the installation gap between the second nut 28 and the blower fan 13, so that the blower fan 13 is more stable in fixing, and the fourth gasket 29 plays a certain role in buffering, thereby avoiding the phenomenon of cracking caused by local stress concentration of the blower fan 13.

Other matters not described in this embodiment can refer to the above-described embodiments.

In addition to the preferred embodiments described above, other embodiments of the present utility model are also contemplated as falling within the scope of the claimed utility model, as well as all other embodiments that may be made by one of ordinary skill in the art without making any inventive effort based on the embodiments of the present utility model.

Claims (10)

1. The utility model provides an air fryer, including the organism, the organism is equipped with the cooking cavity and carries hot-blast subassembly to the cooking cavity, hot-blast subassembly includes the motor, supply air fan and heating element, supply air fan axial positioning is in the front end of the output shaft of motor, supply air fan is driven rotatory production air current by the motor, the heating element is used for heating the air current, the organism is equipped with the heat exchanger that separates motor and heating element, supply air fan and heating element are located one side of heat exchanger, the motor is located the opposite side of heat exchanger, the opposite side that is located the heat exchanger on the output shaft of motor is equipped with radiator fan, the heat exchanger is equipped with the shaft hole that supplies the output shaft to pass, a serial communication port, be equipped with first setting element and the second setting element that is used for axial positioning radiator fan on the output shaft, first setting element and second setting element are located radiator fan's both sides respectively, the second setting element is close to the shaft hole relative first setting element, shaft hole department is equipped with output shaft complex shaft seal piece, shaft seal piece axial positioning is located the heat exchanger.

2. The air fryer of claim 1, wherein said first positioning member comprises a first snap spring mounted on the output shaft, the radiator fan being positioned against the first snap spring; or the first positioning piece comprises a first clamp spring and a first gasket, the first gasket is attached to the first clamp spring, and the cooling fan is abutted against the first gasket for positioning; or the first positioning piece comprises a shaft shoulder arranged on the output shaft, and the cooling fan is propped against the shaft shoulder to be positioned; or, the first positioning piece comprises a shaft sleeve sleeved on the output shaft, the rear end of the shaft sleeve is propped against the front end cover of the motor, and the cooling fan is propped against the front end of the shaft sleeve to be positioned.

3. The air fryer of claim 1, wherein said output shaft is provided with a first thread, and wherein said second positioning member comprises a first nut that mates with said first thread and engages said cooling fan; or, the output shaft is provided with a first thread, the second positioning piece comprises a first nut and a second gasket, and the first nut is matched with the first thread to enable the second gasket to be tightly attached to the cooling fan.

4. The air fryer of claim 1, wherein said output shaft is provided with a third positioning member and a fourth positioning member for axially positioning the blower fan, said third positioning member and said fourth positioning member being located on opposite sides of the blower fan, respectively, said third positioning member being adjacent to the shaft hole relative to said fourth positioning member.

5. The air fryer according to claim 4, wherein said third positioning member comprises a second snap spring mounted on the output shaft, against which the blower fan is positioned; or, the third positioning piece comprises a second clamp spring and a third gasket, the third gasket is attached to the second clamp spring, and the air supply fan is abutted against the third gasket for positioning.

6. The air fryer according to claim 4, wherein said output shaft is provided with a second thread, and the fourth positioning member comprises a second nut, said second nut being engaged with said second thread and abutting said blower fan; or, the output shaft is provided with a second thread, the fourth positioning piece comprises a second nut and a fourth gasket, and the second nut is matched with the second thread to enable the fourth gasket to be tightly attached to the air supply fan.

7. The air fryer of claim 1, wherein said output shaft includes a first section of larger diameter and a second section of smaller diameter, said second section being connected to a forward end of said first section, a radiator fan being mounted to said first section, and a shaft seal and a blower fan being mounted to said second section.

8. The air fryer of claim 1, wherein said shaft bore has a diameter less than an outer diameter of the shaft seal, and the heat shield is provided with a shaft seal pressure plate that axially positions the shaft seal against the heat shield.

9. The air fryer of claim 1, wherein said shaft seal has a first extension ring and a second extension ring disposed about an outer periphery thereof, said first extension ring and said second extension ring defining a detent therebetween for insertion of the heat shield, said first extension ring being disposed adjacent one side of the heat shield and said second extension ring being disposed adjacent the other side of the heat shield.

10. The air fryer of claim 9, wherein said heat shield has a first attachment surface on one side thereof engaging said first extension ring and a second attachment surface on the other side thereof engaging said second extension ring, said first and second attachment surfaces being radially offset.