CN213605939U - Air fryer - Google Patents

Abstract

The utility model provides an air fryer, which comprises a shell (11), wherein the shell (11) is provided with a containing cavity (111), and a heat shield (12) and a fan assembly are arranged in the containing cavity (111); the fan assembly comprises an output shaft (141), a heat dissipation fan blade (15) and a heat conduction fan blade (16), the output shaft (141) penetrates through the top of the heat shield (12), the heat dissipation fan blade (15) and the heat conduction fan blade (16) are both arranged on the output shaft (141), the heat dissipation fan blade (15) is positioned on the outer side of the heat shield (12), and the heat conduction fan blade (16) is positioned on the inner side of the heat shield (12); the total area of the windward side of the heat dissipation fan blade (15) is larger than that of the heat conduction fan blade (16). The air fryer has better heat dissipation effect.

Description

Air fryer

Technical Field

The utility model relates to the technical field of household appliances, especially, relate to an air fryer.

Background

An air fryer is a fryer that uses rapidly circulating hot air to heat food materials, thereby enabling the cooked food materials to achieve the effect and taste of frying the food materials.

The existing air fryer comprises a machine body and a pot body used for containing food materials, wherein the machine body is provided with a heating cavity, and the pot body can be placed in the heating cavity of the machine body. The motor, the heat dissipation fan blade, the heat conduction fan blade and the heating pipe are arranged above the pot body, the heat conduction fan blade can be driven by the motor to rotate and blow hot air around the heating pipe into the pot body downwards so as to heat food materials in the pot body; the heat dissipation fan blade can rotate under the drive of the motor so as to dissipate heat of the space in the machine body except the heating cavity.

However, the existing air fryer has poor heat dissipation effect, which not only causes the surface temperature of the machine body of the air fryer to be too high, but also may burn out electrical components such as a motor.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pot is fried to air, this pot is fried to air's radiating effect is relatively good, not only can prevent that the organism surface temperature of pot is fried to air from rising too high, can prevent moreover that electrical components such as motor from being burnt out to be favorable to guaranteeing the quality and the reliability of pot are fried to air.

The utility model provides an air fryer, which comprises a shell, wherein the shell is provided with a containing cavity, and a heat shield and a fan assembly are arranged in the containing cavity; the fan assembly comprises an output shaft, a heat dissipation fan blade and a heat conduction fan blade, the output shaft penetrates through the top of the heat shield, the heat dissipation fan blade and the heat conduction fan blade are both arranged on the output shaft, the heat dissipation fan blade is positioned on the outer side of the heat shield, and the heat conduction fan blade is positioned on the inner side of the heat shield; the total area of the windward side of the heat dissipation fan blade is larger than that of the windward side of the heat conduction fan blade.

The utility model discloses an air fryer, which comprises a shell, wherein the shell is provided with a containing cavity, and a heat shield and a fan assembly are arranged in the containing cavity; the fan assembly comprises an output shaft, heat dissipation fan blades and heat conduction fan blades, and the output shaft penetrates through the top of the heat shield. The heat dissipation fan blade and the heat conduction fan blade are arranged on the output shaft and are positioned on the outer side of the heat insulation cover, so that cold air can be driven to flow on the outer side of the heat insulation cover in the process that the heat dissipation fan blade is driven by the output shaft to rotate, and the purpose of dissipating heat on the outer side of the heat insulation cover is achieved; the heat conduction fan blade is located the heat exchanger inboard to make the heat conduction fan blade rotate under the drive of output shaft in-process, can drive the hot-air in the heat exchanger to heat the food material of holding in the heat exchanger.

The total area of the windward side of the heat dissipation fan blade is larger than that of the windward side of the heat conduction fan blade, so that the drivable air quantity of the heat dissipation fan blade is larger than that of the heat conduction fan blade, the effect of the heat dissipation fan blade in heat dissipation of the outer side of the heat insulation cover can be improved, the surface temperature of the machine body of the air fryer can be prevented from being excessively high, electric elements in the accommodating cavity can be prevented from being burnt out, and the quality and the reliability of the air fryer can be guaranteed.

In an optional implementation manner, the heat dissipation fan blade includes a plurality of first blades, the heat conduction fan blade includes a plurality of second blades, and the number of the first blades is greater than the number of the second blades.

The heat dissipation fan blade comprises a plurality of first blades, the heat conduction fan blade comprises a plurality of second blades, and the number of the first blades is larger than that of the second blades, so that the total area of the windward side of the heat dissipation fan blade is larger than that of the windward side of the heat conduction fan blade, the driven air quantity of the heat dissipation fan blade is larger than that of the heat conduction fan blade, and the effect of the heat dissipation fan blade in heat dissipation on the outer side of the heat insulation cover can be improved.

In an alternative implementation, the area of the windward side of a single first blade is larger than the area of the windward side of a single second blade.

The area of the windward side of the single first blade is larger than that of the windward side of the single second blade, so that the total area of the windward sides of the heat dissipation blades is larger than that of the windward sides of the heat conduction blades, the driven air quantity of the heat dissipation blades is larger than that of the heat conduction blades, and the effect of the heat dissipation blades in heat dissipation above the motor seat and outside the heat insulation cover can be improved.

In an optional implementation manner, a rotation outer diameter of the heat dissipation fan blade is greater than or equal to a rotation outer diameter of the heat conduction fan blade.

The rotating outer diameter of the heat dissipation fan blade is larger than or equal to that of the heat conduction fan blade, so that the flowing capacity of the driving airflow of the heat dissipation fan blade can be ensured, and the effect of the heat dissipation fan blade in heat dissipation of the outer side of the heat shield can be improved.

In an optional implementation manner, the rotating outer diameter of the heat dissipation fan blade is greater than or equal to 1.2 times of the rotating outer diameter of the heat conduction fan blade.

The total area of the windward side of the heat dissipation fan blade is further ensured to be larger than that of the heat conduction fan blade by setting the rotating outer diameter of the heat dissipation fan blade to be larger than or equal to 1.2 times of the rotating outer diameter of the heat conduction fan blade, so that the drivable air quantity of the heat dissipation fan blade can be further ensured to be larger than that of the heat conduction fan blade, and the effect of the heat dissipation fan blade in heat dissipation of the outer side of the heat shield can be further improved.

In an alternative implementation, the first blade includes a first horizontal segment and an upwardly turned first vertical segment.

Through setting up first blade and including first horizontal segment and the first vertical section of upwards turning over to can strengthen the ability that heat dissipation fan blade drive cold air flows downwards, and then can guarantee that the flow direction of cold air accords with the heat dissipation requirement.

In an alternative implementation, the second blade includes a second horizontal section and a second vertical section that is turned down.

Through setting up the second vertical section that the second blade includes second horizontal segment and turns over downwards to can strengthen the ability that hot-air in the heat conduction fan blade drive heat shield flowed downwards and got into pot body inner chamber, and then make the air fry the pot and can carry out abundant heating to eating the material, be favorable to shortening the culinary art time, reduce the energy consumption.

In an alternative implementation, the height of the first vertical segment is greater than the height of the second vertical segment.

By setting the height of the first vertical section to be greater than that of the second vertical section, on one hand, the total area of the windward side of the heat dissipation fan blade can be ensured to be greater than that of the heat conduction fan blade, so that the drivable air volume of the heat dissipation fan blade is ensured to be greater than that of the heat conduction fan blade, and the heat dissipation effect of the heat dissipation fan blade can be improved; on the other hand, the ability that the heat dissipation fan blade drives the cold air to flow downwards can be improved, and therefore the flowing direction of the cold air can be guaranteed to meet the heat dissipation requirement.

In an alternative implementation, the radial length of the first vertical segment is greater than or equal to the radial length of the second vertical segment.

By setting the radial length of the first vertical section to be greater than or equal to the radial length of the second vertical section, on one hand, the total area of the windward side of the heat dissipation fan blade is favorably ensured to be greater than that of the heat conduction fan blade, so that the heat dissipation effect of the heat dissipation fan blade is improved; on the other hand, the ability that the heat dissipation fan blade drives the cold air to flow downwards can be improved, and therefore the flowing direction of the cold air can be guaranteed to meet the heat dissipation requirement.

In an alternative implementation, the height of the first vertical segment is greater than or equal to 1.2 times the height of the second vertical segment; the radial length of the first vertical segment is greater than or equal to 1.2 times the radial length of the second vertical segment.

On one hand, the total area of the windward side of the heat dissipation fan blade can be further ensured to be larger than the total area of the windward side of the heat conduction fan blade, so as to further ensure that the driven air volume of the heat dissipation fan blade is larger than the driven air volume of the heat conduction fan blade, and further improve the heat dissipation effect of the heat dissipation fan blade; on the other hand, the ability that the heat dissipation fan blade drives the cold air to flow downwards can be further improved, so that the flowing direction of the cold air can be further ensured to meet the heat dissipation requirement.

In an optional implementation manner, a motor seat is further arranged in the accommodating cavity, the motor seat is located above the heat insulation cover, and a vent hole is formed in the motor seat; the fan assembly further comprises a motor, the motor is mounted on the motor seat, the top end of the output shaft is connected with the motor, and the bottom end of the output shaft extends into the heat shield; the heat dissipation fan blade is located between the ventilation hole and the heat shield.

The motor seat is arranged above the heat insulation cover by arranging the motor seat in the accommodating cavity, and the motor seat is provided with a vent hole; the motor is arranged on the motor seat, the top end of the output shaft is connected with the motor to rotate under the driving of the motor, and the bottom end of the output shaft extends into the heat insulation cover; the heat dissipation fan blade is located between the ventilation hole and the heat insulation cover, so that the heat dissipation fan blade can drive cold air above the motor seat to flow downwards to form heat dissipation airflow, the space above the motor seat can be dissipated, electric elements such as a motor are prevented from being burnt out, the space outside the heat insulation cover below the motor seat can be dissipated, and the surface temperature of the machine body of the air fryer is prevented from being too high.

In an optional implementation manner, the outer edge of the motor seat abuts against the inner side wall of the accommodating cavity, the accommodating cavity is divided into a first cavity located above the motor seat and a second cavity located below the motor seat, and the first cavity and the second cavity are communicated through the vent hole.

Through the outer fringe that sets up the motor seat and the inside wall butt that holds the chamber to holding the chamber and separating for the first cavity that is located the motor seat top and the second cavity that is located the motor seat below, through the ventilation hole intercommunication between first cavity and the second cavity, thereby can avoid passing the ventilation hole and get into in the cold air of second cavity from the outer fringe of motor seat and hold between the inside wall in chamber backward flow to the first cavity in, and then can further promote the radiating effect that the air fried the pot.

In an optional implementation manner, an air inlet is formed in the top of the accommodating cavity, and the air inlet is communicated with the first cavity; an air outlet is formed in the bottom of the accommodating cavity and is located on the outer side of the heat insulation cover and communicated with the second cavity.

An air inlet is formed in the top of the accommodating cavity and communicated with the first cavity; the bottom of the accommodating cavity is provided with the air outlet, the air outlet is positioned on the outer side of the heat insulation cover and is communicated with the second cavity body, so that cold air can enter from the top of the accommodating cavity and is discharged from the bottom of the air fryer after taking away heat in the accommodating cavity, and on one hand, a heat dissipation path extends from the top to the bottom of the air fryer, which is beneficial to improving the heat dissipation effect of the air fryer; on the other hand, the air carrying heat is discharged from the bottom of the air fryer, so that the user can be prevented from being burnt, and the user experience is improved.

In an alternative implementation, the air inlet is circumferentially arranged at the edge of the top wall of the shell; the air outlet is arranged on the edge of the bottom wall of the shell along the circumferential direction.

The air inlet is circumferentially arranged at the edge of the top wall of the shell, so that the air inlet amount can be ensured, and the appearance of the air fryer is not influenced; the air outlet is arranged at the edge of the bottom wall of the shell along the circumferential direction, so that the air with heat can be smoothly discharged.

In an optional implementation manner, the outer shell includes a lower shell and an upper cover, the top of the lower shell has an opening, the upper cover covers the opening, and an air inlet is formed between an edge of the upper cover and an edge of the opening.

The shell comprises a lower shell and an upper cover, the top of the lower shell is provided with an opening, the upper cover covers the opening, and an air inlet is formed between the edge of the upper cover and the edge of the opening, so that the structure of the shell is simplified, and the number of parts of the air fryer is reduced; and the air inlet is convenient to arrange.

In an optional implementation manner, the diameter of the ventilation hole is smaller than the rotating outer diameter of the heat dissipation fan blade, and the difference between the diameter of the ventilation hole and the rotating outer diameter of the heat dissipation fan blade is smaller than or equal to 30 mm.

By setting the diameter of the vent hole to be smaller than the rotating outer diameter of the heat dissipation fan blade and setting the difference between the diameter of the vent hole and the rotating outer diameter of the heat dissipation fan blade to be smaller than or equal to 30mm, on one hand, the area of the vent hole can be prevented from being too small, and the air quantity passing through the vent hole can be increased; on the other hand, the motor seat can be prevented from excessively shielding the heat dissipation fan blades, and the capability of driving cold air above the motor seat to flow downwards through the vent holes by the heat dissipation fan blades is favorably improved.

In addition to the technical problems, technical features constituting technical solutions and advantages brought by the technical features of the technical solutions described above, the present invention provides other technical problems that can be solved by an air fryer, other technical features included in the technical solutions and advantages brought by the technical features, which will be described in further detail in the following detailed description.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is a schematic view of an air fryer according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of an air fryer in accordance with an embodiment of the present invention;

FIG. 3 is a schematic diagram of the heat dissipation of an air fryer according to an embodiment of the present invention;

fig. 4 is an exploded view of an air fryer in accordance with an embodiment of the present invention.

Description of reference numerals:

10-body;

11-a housing;

111-a containment chamber;

1111-a first cavity;

1112-a second cavity;

112-an air inlet;

113-an air outlet;

114-a lower housing;

115-an upper cover;

12-a heat shield;

121-upper heat shield;

122-septal heat shield;

123-lower heat shield;

13-a motor seat;

131-a vent;

14-a motor;

141-an output shaft;

15-heat dissipation fan blades;

151-first blade;

1511-a first vertical section;

16-heat conducting fan blades;

161-a second blade;

1611-a second vertical section;

20-pot body.

Detailed Description

Among the prior art, the air is fried and is included organism and the pot body that is used for the splendid attire to eat the material, and the organism includes shell and electrical components, and the shell has and holds the chamber, holds the intracavity and is provided with thermal-insulated cover, separates out in order to form the heating chamber in the partial region that will hold the chamber lower part from the thermal-insulated cover, and the pot body can get the holding of putting in the heating chamber. The electric appliance element mainly comprises a motor, a heat dissipation fan blade, a heat conduction fan blade and a heating tube, wherein the motor and the heat dissipation fan blade are arranged in an accommodating cavity above the heat insulation cover, and the heat conduction fan blade and the heating tube are arranged in a heating cavity above the pot body. The heating tube generates heat to heat the air in the heating cavity, and the heat conduction fan blade can rotate under the drive of the motor to blow the hot air around the heating tube into the inner cavity of the pot body downwards so as to heat the food materials in the inner cavity of the pot body. The heat dissipation fan blade can rotate under the drive of the motor so as to suck cold air outside the air fryer into the accommodating cavity, and therefore heat dissipation is carried out on the space inside the shell except for the heating cavity.

Because the air volume of heat dissipation fan blade is less than the air volume of heat conduction fan blade among the prior art to lead to the radiating effect of air fryer not good, and then not only can lead to the organism surface temperature rise of air fryer too high, probably burn out electrical components such as motor moreover, reduce the quality and the reliability of air fryer.

In order to solve the technical problem, the utility model provides an air fryer includes the shell, and the shell has and holds the chamber, holds the intracavity and is provided with heat exchanger, motor seat, motor, heat dissipation fan blade and heat conduction fan blade. The heat shield is located the lower part that holds the chamber, and the motor seat is located the top that separates the heat shield, and the bottom surface of motor seat is provided with the ventilation hole. The motor is installed on the motor seat, and the output shaft of motor passes through the ventilation hole and extends to in the heat exchanger that separates, and heat dissipation fan blade and heat conduction fan blade all set up on the output shaft, and the heat dissipation fan blade is located the ventilation hole and separates between the heat exchanger, and the heat conduction fan blade is located and separates the heat exchanger. The total area of the windward side of the heat dissipation fan blade is larger than that of the heat conduction fan blade, so that the drivable air quantity of the heat dissipation fan blade is larger than that of the heat conduction fan blade, the effect of the heat dissipation fan blade in heat dissipation above the motor seat and outside the heat insulation cover can be improved, the surface temperature of the machine body of the air fryer can be prevented from being too high, electric elements such as a motor can be prevented from being burnt out, and the quality and the reliability of the air fryer can be guaranteed.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

FIG. 1 is a schematic view of an air fryer according to an embodiment of the present invention; FIG. 2 is a cross-sectional view of an air fryer in accordance with an embodiment of the present invention; FIG. 3 is a schematic diagram of the heat dissipation of an air fryer according to an embodiment of the present invention; fig. 4 is an exploded view of an air fryer in accordance with an embodiment of the present invention.

Referring to fig. 1 to 4, the present embodiment provides an air fryer comprising a housing 11, the housing 11 having a receiving cavity 111, a heat shield 12 and a fan assembly disposed in the receiving cavity 111; the fan assembly comprises an output shaft 141, a heat dissipation fan blade 15 and a heat conduction fan blade 16. Specifically, the output shaft 141 penetrates through the top of the heat shield 12, the heat dissipation fan blades 15 and the heat conduction fan blades 16 are both arranged on the output shaft 141, the heat dissipation fan blades 15 are located on the outer side of the heat shield 12, and the heat conduction fan blades 16 are located on the inner side of the heat shield 12.

Typically, the heat shield 12 is located at a lower portion of the receiving cavity 111, and the fan assembly is disposed at an upper portion of the receiving cavity 111 such that the output shaft 141 of the fan assembly extends through the heat shield 12 from a top portion of the heat shield 12. Illustratively, the heat shield 12 may include an upper heat shield 121, an intermediate heat shield 122 and a lower heat shield 123, and the upper heat shield 121, the intermediate heat shield 122 and the lower heat shield 123 enclose a heating cavity for accommodating the pot 20 of the air fryer at a lower portion of the accommodating chamber 111. The heat-conducting fan blade 16 is located in the heating cavity, so that the heat-conducting fan blade 16 can drive hot air in the heating cavity to circularly flow and heat food materials in the pot body 20 in the rotating process.

It should be noted that the amount of wind that can be driven by the blades, such as the heat dissipation blade and the heat conduction blade, mainly depends on the rotational speed of the blades and the total area of the windward side of the blades. The total area of the windward side of the fan blade is the sum of the windward side areas of all the fan blades, namely, two factors are used for influencing the total area of the windward side of the fan blade, one factor is the number of the fan blades, and the other factor is the windward side area of a single fan blade in the fan blade. The windward side of the blade refers to the side of the blade facing the airflow in the rotating process, and relatively speaking, the side of the blade departing from the airflow in the rotating process is the leeward side of the blade.

The area of the windward side of the blade is usually positively correlated to both the length and the width of the blade, i.e. as the length and/or the width of the blade increases, the area of the windward side of the blade also increases. For example, when the blade is a rectangular blade, the area of the windward side of the blade is the length of the rectangle multiplied by the width of the rectangle, and when the length and/or the width of the rectangular blade is increased, the area of the windward side of the rectangular blade is also increased.

It can be understood that, since the blades on the fan blade are generally radially arranged, the length of the blade is positively correlated with the rotating outer diameter of the fan blade, that is, the larger the length of the blade is, the larger the rotating outer diameter of the fan blade is, and the smaller the length of the blade is, the smaller the rotating outer diameter of the fan blade is; or the larger the rotating outer diameter of the fan blade is, the larger the length of the fan blade is, and the smaller the rotating outer diameter of the fan blade is, the smaller the length of the fan blade is.

Since the heat dissipating fan 15 and the heat conducting fan 16 in this embodiment are both driven by the output shaft 141, the rotation speeds of the heat dissipating fan 15 and the heat conducting fan 16 are the same. In order to make the air volume driven by the heat dissipation fan blade 15 larger than the air volume driven by the heat conduction fan blade 16 to achieve the purpose of improving the heat dissipation effect of the air fryer, the total area of the windward side of the heat dissipation fan blade 15 needs to be larger than the total area of the windward side of the heat conduction fan blade 16.

In specific implementation, the air fryer includes a machine body 10 and a pot body 20 for containing food materials, the machine body 10 includes a housing 11 and an electrical component, the housing 11 has a containing cavity 111, a heat insulation cover 12 is arranged in the containing cavity 111, the heat insulation cover 12 separates a partial region at the lower part of the containing cavity 111 to form a heating cavity, and the pot body 20 can be taken and placed in the heating cavity. The electric appliance element comprises a motor 14, a heat dissipation fan blade 15, a heat conduction fan blade 16, a heating tube and the like, wherein the motor 14 and the heat dissipation fan blade 15 are arranged in a containing cavity 111 above the heat shield 12, and the heat conduction fan blade 16 and the heating tube are arranged in a heating cavity enclosed by the heat shield 12. The heating tube generates heat to heat the air in the heating cavity, and the heat-conducting fan blade 16 can rotate under the driving of the motor 14 to blow the hot air around the heating tube into the inner cavity of the pot body 20 so as to heat the food material in the inner cavity of the pot body 20. The heat dissipation fan blade 15 can rotate under the driving of the motor 14 to suck cold air outside the air fryer into the accommodating cavity 111 so as to dissipate heat of the space inside the shell 11 except the heating cavity; because the total area of the windward side of the heat dissipation fan blade 15 is larger than the total area of the windward side of the heat conduction fan blade 16, the air volume which can be driven by the heat dissipation fan blade 15 is larger than the air volume which can be driven by the heat conduction fan blade 16, and therefore the heat dissipation effect of the air fryer can be improved.

The air fryer of the embodiment comprises a shell 11, wherein the shell 11 is provided with a containing cavity 111, and a heat shield 12 and a fan assembly are arranged in the containing cavity 111; the fan assembly comprises an output shaft 141, a heat dissipation fan blade 15 and a heat conduction fan blade 16. The output shaft 141 extends through the top of the heat shield 12. The heat dissipation fan blade 15 and the heat conduction fan blade 16 are both arranged on the output shaft 141, and the heat dissipation fan blade 15 is positioned outside the heat insulation cover 12, so that cold air can be driven to flow outside the heat insulation cover 12 in the process that the heat dissipation fan blade 15 is driven by the output shaft 141 to rotate, and the purpose of dissipating heat outside the heat insulation cover 12 is achieved; the heat-conducting fan blade 16 is located inside the heat shield 12, so that the heat-conducting fan blade 16 can drive hot air in the heat shield 12 to heat food materials contained in the heat shield 12 in the process of rotating under the driving of the output shaft 141.

The total area of the windward side of the heat dissipation fan blade 15 is larger than that of the windward side of the heat conduction fan blade 16, so that the amount of wind driven by the heat dissipation fan blade 15 is larger than that of the heat conduction fan blade 16, the effect of the heat dissipation fan blade 15 in heat dissipation above the motor seat 13 and outside the heat insulation cover 12 can be improved, the surface temperature of the machine body 10 of the air fryer can be prevented from being too high, electric elements in the accommodating cavity can be prevented from being burnt out, and the quality and the reliability of the air fryer can be guaranteed.

In a first optional implementation manner, the heat dissipation fan blade 15 includes a plurality of first blades 151, the heat conduction fan blade 16 includes a plurality of second blades 161, and when the windward area of a single first blade 151 and the windward area of a single second blade 161 are equal or have a smaller difference, the number of the first blades 151 may be set to be greater than the number of the second blades 161, so as to ensure that the total area of the windward side of the heat dissipation fan blade 15 is greater than the total area of the windward side of the heat conduction fan blade 16.

For example, the number of the first blades 151 may be set to eight, and the number of the second blades 161 may be set to six; or, the number of the first blades 151 and the number of the second blades 161 may be set according to actual needs, as long as the requirement that the number of the first blades 151 is greater than the number of the second blades 161 can be satisfied, so as to ensure that the total area of the windward side of the heat dissipation fan blade 15 is greater than the total area of the windward side of the heat conduction fan blade 16, so that the amount of wind that the heat dissipation fan blade 15 can drive is greater than the amount of wind that the heat conduction fan blade 16 can drive, and further, the effect of the heat dissipation fan blade 15 in dissipating heat from the outer side of the heat shield 12 can be improved.

In a second optional implementation manner, when the number of the first blades 151 is equal to the number of the second blades 161, the area of the windward side of a single first blade 151 may be set to be larger than the area of the windward side of a single second blade 161, so as to ensure that the total area of the windward sides of the heat dissipation blades 15 is larger than the total area of the windward sides of the heat conduction blades 16, so that the amount of wind driven by the heat dissipation blades 15 can be larger than the amount of wind driven by the heat conduction blades 16, and further, the effect of the heat dissipation blades 15 in dissipating heat from the outer side of the heat shield 12 can be improved.

In a third optional implementation manner, the number of the first blades 151 may be greater than the number of the second blades 161, and meanwhile, the area of the windward side of a single first blade 151 is greater than the area of the windward side of a single second blade 161, so as to ensure that the total area of the windward sides of the heat dissipation fan blades 15 is greater than the total area of the windward sides of the heat conduction fan blades 16, so that the amount of wind which can be driven by the heat dissipation fan blades 15 is greater than the amount of wind which can be driven by the heat conduction fan blades 16, and further, the effect of the heat dissipation fan blades 15 in dissipating heat from the outer side of the heat shield 12 can be improved.

In other optional implementation manners, the number of the first blades 151 and the number of the second blades 161 may be set according to actual needs, and meanwhile, the area of the windward side of a single first blade 151 and the area of the windward side of a single second blade 161 are set according to actual needs, as long as it is ensured that the total area of the windward sides of the heat dissipation fan blades 15 is greater than the total area of the windward sides of the heat conduction fan blades 16, which is not described herein again.

Optionally, the rotating outer diameter of the heat dissipating fan 15 may be greater than or equal to the rotating outer diameter of the heat conducting fan 16, so that the ability of the heat dissipating fan 15 to drive the airflow to flow can be ensured, and the effect of the heat dissipating fan 15 in dissipating heat from the outer side of the heat shield 12 can be improved.

In order to make the area of the windward side of the single first blade 151 larger than the area of the windward side of the single second blade 161, the rotating outer diameter of the heat dissipation fan 15 may be greater than or equal to 1.2 times the rotating outer diameter of the heat conduction fan 16. For example, when the rotating outer diameter of the heat-conducting fan blade 16 is set to be 100mm, the rotating outer diameter of the heat-dissipating fan blade 15 may be set to be greater than or equal to 120 mm. In other words, it is equivalent to provide the length of the single first blade 151 to be greater than or equal to 1.2 times the length of the single second blade 161 to ensure that the area of the single first blade 151 is greater than the area of the single second blade 161. Therefore, the total area of the windward side of the heat dissipation fan blade 15 is larger than that of the windward side of the heat conduction fan blade 16, and the driving air quantity of the heat dissipation fan blade 15 is 1.2 times that of the heat conduction fan blade 16, or the driving air quantity of the heat dissipation fan blade 15 is larger than 1.2 times that of the heat conduction fan blade 16, so that the effect of the heat dissipation fan blade 15 in dissipating heat of the outer side of the heat insulation cover 12 is further improved, and the quality and the reliability of the air fryer are improved.

In an optional implementation manner, the first blade 151 may include a first horizontal section and an upwardly turned first vertical section 1511, for example, the cross section of the first blade 151 may be in a right-angle shape, and during the rotation of the fan blade 15, the recessed side of the first blade 151 is a windward side, and the raised side of the first blade is a leeward side, at this time, the area of the windward side of the first blade 151 is the sum of the areas of the first horizontal section facing the recessed side and the first vertical section 1511 facing the recessed side. The first vertical section 1511 can enhance the ability of the heat dissipation fan blade 15 to drive the cold air to flow downwards, so as to ensure that the flow direction of the cold air meets the heat dissipation requirement.

In other alternative implementations, the first blade 151 may also be a blade with a certain attack angle, as long as the requirement of the present embodiment can be met, and the description is omitted here.

In an optional implementation, the second blade 161 may include a second horizontal segment and a second vertical segment 1611 that is turned over downward, so as to enhance the ability of the heat-conducting blade 16 to drive the hot air in the heat shield 12 to flow downward into the inner cavity of the pot body 20, and further enable the air fryer to sufficiently heat the food materials, which is beneficial to shortening the cooking time and reducing the energy consumption.

In other alternative implementations, the second blade 161 may also be a blade with a certain attack angle, as long as the requirement of the present embodiment can be met, and the description is omitted here.

Optionally, the height of the first vertical section 1511 may be set to be greater than the height of the second vertical section 1611 according to actual needs, so that the area of the windward side of the first vertical section 1511 is greater than the area of the windward side of the second vertical section, which is beneficial to ensuring that the area of the windward side of a single first blade 151 is greater than the area of the windward side of a single second blade 161, on one hand, the total area of the windward sides of the heat dissipation blades 15 can be ensured to be greater than the total area of the windward sides of the heat conduction blades 16, so as to ensure that the drivable air volume of the heat dissipation blades 15 is greater than the drivable air volume of the heat conduction blades 16, and thus the heat dissipation effect of the heat dissipation blades 15 can be improved; on the other hand, the ability of the cooling fan 15 for downward flow of the cooling air can be improved, so that the flowing direction of the cooling air can be ensured to meet the cooling requirement.

Further, the height of the first vertical section 1511 may be set to be greater than or equal to 1.2 times the height of the second vertical section 1611, on one hand, it can be further ensured that the total area of the windward side of the heat dissipation fan blade 15 is greater than the total area of the windward side of the heat conduction fan blade 16, so that the amount of wind which can be driven by the heat dissipation fan blade 15 is 1.2 times the amount of wind which can be driven by the heat conduction fan blade 16, or the amount of wind which can be driven by the heat dissipation fan blade 15 is greater than 1.2 times the amount of wind which can be driven by the heat conduction fan blade 16, and further the heat dissipation effect of the heat dissipation fan blade; on the other hand, the capability of the heat dissipation fan blades 15 for driving the cold air to flow downwards can be further improved, so that the flowing direction of the cold air can be further ensured to meet the heat dissipation requirement.

Optionally, the radial length of the first vertical section 1511 may be greater than or equal to the radial length of the second vertical section 1611, which is beneficial to ensuring that the area of the windward side of the first vertical section 1511 is greater than the area of the windward side of the second vertical section, so as to ensure that the area of the windward side of the single first blade 151 is greater than the area of the windward side of the single second blade 161, and on the one hand, it can ensure that the total area of the windward sides of the heat dissipation fan blades 15 is greater than the total area of the windward sides of the heat conduction fan blades 16, so as to ensure that the drivable air volume of the heat dissipation fan blades 15 is greater than the drivable air volume of the heat conduction fan blades 16, and thus improve the heat dissipation effect of; on the other hand, the ability of the cooling fan 15 for downward flow of the cooling air can be improved, so that the flowing direction of the cooling air can be ensured to meet the cooling requirement.

Further, the radial length of the first vertical section 1511 may be set to be greater than or equal to 1.2 times the radial length of the second vertical section 1611, on one hand, it can be further ensured that the total area of the windward side of the heat dissipation fan blade 15 is greater than the total area of the windward side of the heat conduction fan blade 16, so that the amount of wind driven by the heat dissipation fan blade 15 is 1.2 times the amount of wind driven by the heat conduction fan blade 16, or the amount of wind driven by the heat dissipation fan blade 15 is greater than 1.2 times the amount of wind driven by the heat conduction fan blade 16, and further the heat dissipation effect of the heat dissipation fan blade 15 can be further improved; on the other hand, the capability of the heat dissipation fan blades 15 for driving the cold air to flow downwards can be further improved, so that the flowing direction of the cold air can be further ensured to meet the heat dissipation requirement.

As shown in fig. 2 to 4, a motor base 13 is further disposed in the accommodating cavity, the motor base 13 is located above the heat shield 12, and a vent hole 131 is disposed on the motor base 13; the fan assembly further comprises a motor 14, the motor 14 is mounted on the motor base 13, the top end of the output shaft 141 is connected with the motor 14, and the bottom end of the output shaft 141 extends into the heat shield 12; the heat dissipation fan blade 15 is located between the ventilation hole 131 and the heat shield 12, so that the heat dissipation fan blade 15 can drive the cold air above the motor base 13 to flow downwards through the ventilation hole 131, thereby not only dissipating heat in the space above the motor base 13 and avoiding burning out of electric elements such as the motor 14, but also dissipating heat in the space outside the heat shield 12 below the motor base 13, and avoiding the surface temperature of the machine body 10 of the air fryer from being too high.

Referring to fig. 2 and 3, further, the outer edge of the motor base 13 may be abutted against the inner side wall of the accommodating cavity 111 to divide the accommodating cavity 111 into a first cavity 1111 located above the motor base 13 and a second cavity 1112 located below the motor base 13, and the first cavity 1111 and the second cavity 1112 are communicated through the vent hole 131. Wherein, first cavity 1111 is used for holding electronic components such as motor 14 and control circuit, and second cavity 1112 is used for setting up heat exchanger 12, and heat exchanger 12 encloses the synthetic heating chamber that is used for holding pot body 20 in second cavity 1112.

In specific implementation, the outer edge of the motor seat 13 is abutted against the inner side wall of the accommodating cavity 1111 to divide the accommodating cavity 111 into the first cavity 1111 and the second cavity 1112, and the first cavity 1111 is communicated with the second cavity 1112 through the vent hole 131, so that after cold air in the first cavity 1111 passes through the vent hole 131 and enters the second cavity 1112, the cold air flows back into the first cavity 1111 from between the outer edge of the motor seat 13 and the inner side wall of the accommodating cavity 111, and heat in the accommodating cavity 1111 cannot be dissipated out of the air fryer from the second cavity 1112; thereby further improving the heat dissipation effect of the air fryer and avoiding the overhigh surface temperature of the air fryer.

Referring to fig. 2 and 3, in an alternative implementation, an air inlet 112 is disposed at the top of the accommodating cavity 111, and the air inlet 112 is communicated with the first cavity 1111; the bottom of the accommodating cavity 111 is provided with an air outlet 113, and the air outlet 113 is located on the outer side of the heat shield 12 and is communicated with the second cavity 1112. Cold air can enter the first cavity 1111 from the air inlet 112 at the top of the accommodating cavity 111 and take away heat of the motor 14, then enter the second cavity 1112 through the vent hole 131 at the bottom of the motor base 13 and take away heat in the gap between the heat shield 12 and the housing 11, and finally exit from the air outlet 113 at the bottom of the accommodating cavity 111, as shown in fig. 4, the curve with arrows in fig. 4 represents the flow path of the heat dissipation air. On the one hand, the heat dissipation path extends from the top of the air fryer to the bottom of the air fryer, which is beneficial to improving the heat dissipation effect of the air fryer; on the other hand, the air carrying heat is discharged from the bottom of the air fryer, so that the user can be prevented from being burnt, and the user experience is improved.

Specifically, the air inlet 112 may be circumferentially disposed at an edge of a top wall of the housing 11, so as to not only ensure an air inlet amount, but also ensure that an appearance of the air fryer is not affected; the air outlet 113 may be circumferentially formed at an edge of the bottom wall of the housing 11, so that air carrying heat can be smoothly discharged.

In other alternative implementations, the air inlet 112 may be disposed at other positions of the accommodating cavity 111, for example, on a side wall of the accommodating cavity 111, as long as it can communicate with the first cavity 1111, and details thereof are not described here. The air outlet 113 may also be disposed at other positions of the accommodating cavity 111, for example, on a sidewall of the accommodating cavity 111, as long as it can communicate with the second cavity 1112, and details thereof are not repeated herein.

Referring to fig. 2 and 3, in an alternative implementation, the outer shell 11 may include a lower shell 114 and an upper cover 115, the top of the lower shell 114 has an opening, the upper cover 115 covers the opening, and an air inlet 113 is formed between the edge of the upper cover 115 and the edge of the opening, so as to not only facilitate the simplification of the structure of the outer shell 11, but also reduce the number of parts of the air fryer; and facilitates the installation of the intake vent 112.

It should be noted that reference to cold air in this application is with respect to hot air in the heating chamber of the air fryer. The heating cavity of the air fryer is provided with a heating pipe, and the heating pipe can heat air in the heating cavity to obtain hot air for heating food materials. The cool air is air in the external environment of the air fryer, and the air in the external environment can enter the air fryer through the air inlet 112 on the accommodating cavity 111 to exchange heat in the air fryer and is exhausted from the air outlet 113 on the accommodating cavity 111.

Optionally, the diameter of the vent hole may be smaller than the rotating outer diameter of the heat dissipation fan blade, and the difference between the diameter of the vent hole and the rotating outer diameter of the heat dissipation fan blade is smaller than or equal to 30 mm.

For example, when the rotating outer diameter of the heat dissipation fan blade 15 is set to be 100mm, the diameter of the vent hole 131 is greater than or equal to 70mm and less than 100mm, for example, the diameter of the vent hole 131 may be set to be 70mm, 80mm, 90mm, or 99mm according to actual needs. On one hand, the area of the vent hole can be prevented from being too small, and the air quantity passing through the vent hole can be increased; on the other hand, the motor seat can be prevented from excessively shielding the heat dissipation fan blades, and the capability of driving cold air above the motor seat to flow downwards through the vent holes by the heat dissipation fan blades is favorably improved.

The air fryer of the embodiment comprises a shell 11, wherein the shell 11 is provided with a containing cavity 111, and a heat shield 12 and a fan assembly are arranged in the containing cavity 111; the fan assembly comprises an output shaft 141, a heat dissipation fan blade 15 and a heat conduction fan blade 16. The output shaft 141 penetrates through the top of the heat shield 12, the heat dissipation fan blades 15 and the heat conduction fan blades 16 are both arranged on the output shaft 141, the heat dissipation fan blades 15 are located on the outer side of the heat shield 12, and the heat conduction fan blades 16 are located on the inner side of the heat shield 12. The total area of the windward side of the heat dissipation fan blade 15 is larger than that of the windward side of the heat conduction fan blade 16, so that the amount of wind driven by the heat dissipation fan blade 15 is larger than that of the heat conduction fan blade 16, the effect of the heat dissipation fan blade 15 in heat dissipation of the outer side of the heat shield 12 can be improved, the surface temperature of the machine body 10 of the air fryer can be prevented from being too high, electric elements such as a motor 14 and the like can be prevented from being burnt out, and the quality and the reliability of the air fryer can be guaranteed.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. An air fryer is characterized by comprising a shell (11), wherein the shell (11) is provided with a containing cavity (111), and a heat shield (12) and a fan assembly are arranged in the containing cavity (111); the fan assembly comprises an output shaft (141), heat dissipation fan blades (15) and heat conduction fan blades (16), the output shaft (141) penetrates through the top of the heat shield (12), the heat dissipation fan blades (15) and the heat conduction fan blades (16) are both arranged on the output shaft (141), the heat dissipation fan blades (15) are located on the outer side of the heat shield (12), and the heat conduction fan blades (16) are located on the inner side of the heat shield (12);

the total area of the windward side of the heat dissipation fan blade (15) is larger than that of the windward side of the heat conduction fan blade (16).

2. An air fryer according to claim 1, wherein the heat-dissipating fan (15) comprises a plurality of first blades (151), the heat-conducting fan (16) comprises a plurality of second blades (161), the number of first blades (151) being greater than the number of second blades (161); and/or the presence of a gas in the gas,

the area of the windward side of the single first blade (151) is larger than that of the windward side of the single second blade (161).

3. An air fryer according to claim 1, wherein the rotating outer diameter of the heat dissipating fan blades (15) is greater than or equal to the rotating outer diameter of the heat conducting fan blades (16).

4. An air fryer according to claim 3, wherein the rotating outer diameter of the heat dissipating fan blade (15) is greater than or equal to 1.2 times the rotating outer diameter of the heat conducting fan blade (16).

5. An air fryer according to claim 2, wherein the first blade (151) comprises a first horizontal section and an upwardly turned first vertical section (1511); the second blade (161) comprises a second horizontal section and a second vertical section (1611) folded downwards, the height of the first vertical section (1511) is greater than the height of the second vertical section (1611);

and/or, a radial length of the first vertical segment (1511) is greater than or equal to a radial length of the second vertical segment (1611).

6. An air fryer according to claim 5, wherein the height of the first vertical section (1511) is greater than or equal to 1.2 times the height of the second vertical section (1611); the radial length of the first vertical segment (1511) is greater than or equal to 1.2 times the radial length of the second vertical segment (1611).

7. An air fryer according to any one of claims 1 to 6, wherein a motor base (13) is further provided in the receiving chamber (111), the motor base (13) being located above the heat shield (12), the motor base (13) being provided with a vent hole (131);

the fan assembly further comprises a motor (14), the motor (14) is installed on the motor seat (13), the top end of the output shaft (141) is connected with the motor (14), and the bottom end of the output shaft (141) extends into the heat shield (12);

the heat dissipation fan blade (15) is located between the ventilation hole (131) and the heat insulation cover (12).

8. An air fryer according to claim 7, wherein the outer edge of the motor seat (13) abuts against the inner side wall of the accommodating chamber (111) and divides the accommodating chamber (111) into a first cavity (1111) located above the motor seat (13) and a second cavity (1112) located below the motor seat (13), the first cavity (1111) and the second cavity (1112) communicating with each other through the vent hole (131).

9. Air fryer according to claim 8, characterised in that the top of the containment chamber (111) is provided with an air intake (112), the air intake (112) communicating with the first cavity (1111);

an air outlet (113) is formed in the bottom of the accommodating cavity (111), and the air outlet (113) is located on the outer side of the heat insulation cover (12) and communicated with the second cavity (1112);

the air inlet (112) is arranged at the edge of the top wall of the shell (11) along the circumferential direction; the air outlet (113) is arranged at the edge of the bottom wall of the shell (11) along the circumferential direction.

10. An air fryer according to claim 7, wherein the diameter of the vent hole (131) is smaller than the rotating outer diameter of the heat dissipation fan blade (15), and the difference between the diameter of the vent hole (131) and the rotating outer diameter of the heat dissipation fan blade (15) is less than or equal to 30 mm.

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