CN213345353U - Volute type multi-circulation hot air pressurized air fryer - Google Patents

Abstract

The utility model provides a volute type multi-circulation hot air pressurized air fryer, which is characterized by comprising a heating component, wherein the heating component comprises a volute upper cover plate and a volute lower cover plate; the upper cover plate and the lower cover plate of the volute together form the volute, and the turbine fan blade is arranged in the volute; the volute is provided with a plurality of volute tongue turning structures. According to the utility model discloses, can solve above-mentioned heated air circulation heating problem, make food be heated evenly, improve food processing quality and machining efficiency.

Description

Volute type multi-circulation hot air pressurized air fryer

Technical Field

The utility model relates to an air explodes pot particularly, relates to a pot is fried to volute formula multicycle hot air supercharging's air.

Background

An air fryer is a kitchen appliance that cooks food using an air heating assembly and a circulating air stream of heated air generated by the air heating assembly.

Typically, air fryers have a heating assembly and a cooling assembly disposed therein.

The heating assembly is used to heat the air in the fry basket to 100-. The cooling component is used for generating cold air and emitting the cold air outwards. This maintains the temperature of the electronic components, such as the motor, from being too high to avoid damage to the electronic components and to reduce the temperature of the fryer housing.

An air fryer in the market at present generally comprises a motor, a motor cover, a heat dissipation fan blade, a hot air pipe cover, a hot air fan blade, a heating pipe and a box body from top to bottom in sequence. The hot air fan blades are arranged along the horizontal direction, hot air is blown out along the periphery of the hot air fan blades, passes through the heating pipes and is diffused to the periphery of the box body, and then air is returned from the middle of the box body to form hot air circulation. In this hot air circulation, the hot air sometimes moves upward without reaching the bottom of the fryer tank. This is undesirable for the user.

Above shortcoming has influenced the normal use of air fryer, has also reduced user experience, consequently this application aims at solving above-mentioned heated air circulation heating problem, makes food be heated evenly, improves food processing quality and machining efficiency.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a volute type multi-circulation hot air pressurized air fryer which is characterized in that the fryer comprises a heating component, wherein the heating component comprises a volute upper cover plate and a volute lower cover plate; the upper cover plate and the lower cover plate of the volute together form the volute, and the turbine fan blade is arranged in the volute; the volute is provided with a plurality of volute tongue turning structures.

In one embodiment, the volute air outlet at the end of the plurality of volute tongue turning structures is located on the lower cover plate.

In one embodiment, the volute is an eccentric volute.

In one embodiment, the blades of the turbine blade are straight blades or arc blades.

In one embodiment, the blade of the turbine blade is made of two metal blades with surrounding edges through welding or riveting.

In one embodiment, the plurality of vortex tongue turning structures are identical.

In one embodiment, the plurality of vortex tongue turning structures are different.

In one embodiment, the air fryer is provided with a frying basket, the frying basket is provided with an air guide groove, the air guide groove corresponds to the vortex tongue turning structure, so that air enters the air guide groove from the vortex tongue turning structure, and the number of the air guide groove is the same as that of the vortex tongue turning structure.

In one embodiment, the air fryer is provided with a frying barrel, the bottom of the frying barrel is provided with a plurality of convex table surfaces, the number of the convex table surfaces is equal to that of the air guide grooves, and a structure with a high middle part and two low sides is formed.

In one embodiment, the air fryer is provided with a frying basket, the frying basket is provided with an air guide groove, the air guide groove corresponds to the vortex tongue turning structure, so that air enters the air guide groove from the vortex tongue turning structure, and the number of the air guide groove is the same as that of the vortex tongue turning structure; the width of the volute air outlet is smaller than that of the corresponding air guide groove.

The utility model discloses at least, provide following technological effect:

the hot air circulation fan blades are turbine fan blades, and supply air to the frying barrel through the vortex tongue turning structure by turbocharging. The pressurized hot air flows downward. The pressurized hot air can flow downwards to an air guide groove formed on the outer side wall of the frying barrel and flows upwards through the food through the bottom of the boss surface of the frying barrel. After the food flows through, air is sucked into the turbine blade from the central hole of the lower cover plate of the volute in the middle of the lower cover plate of the volute below the turbine blade under the action of pressure difference. Before being sucked, this air has passed through the heat-generating tube and has thus been heated, thus forming a circulating flow of hot air.

Other features and advantages of the present application will be set forth in the description that follows.

Drawings

The accompanying drawings are included to provide a further understanding of the claimed subject matter and are incorporated in and constitute a part of this specification, illustrate embodiments of the subject matter and together with the description serve to explain the principles of the subject matter and not to limit the subject matter.

FIG. 1A is a schematic view of a scroll multi-cycle hot air pressurized air fryer according to the present application;

FIG. 1B is an exploded schematic view of the motor, motor cover, cooling assembly and heating assembly in the upper housing of the scroll multi-cycle hot air supercharged air fryer to which the present application relates;

FIG. 2 is a schematic view of the motor and motor cover of the scroll multi-cycle hot air pressurized air fryer to which the present application relates;

FIG. 3 is a schematic view of the upper cover plate of the volute multi-cycle hot air pressurized air fryer to which the present application relates;

FIG. 4 is a schematic view of turbine blades of a scroll-type multi-cycle hot air supercharged air fryer to which the present application relates;

FIG. 5 is a schematic view of the lower cover plate of the volute multi-cycle forced air fryer to which the present application relates;

FIG. 6 is a schematic view of a fry basket of a scroll multi-cycle hot air pressurized air fryer to which the present application relates;

FIG. 7 is a schematic view of a fry vat of a scroll multi-cycle hot air pressurized air fryer to which the present application relates.

Description of reference numerals:

1-a motor cover; 2, a motor; 3-a control system;

4-upper cover plate of volute; 4 a-the curved surface of the upper cover plate of the volute;

5-turbine blades; 5 a-turbine blade vanes;

6-lower cover plate of volute; 6 a-curved surface of lower cover plate of volute; 6 b-center hole of lower cover plate of volute;

6 c-the left outlet of the volute; 6 d-right air outlet of the volute;

7-a heating tube;

8-frying basket; 8 a-left air guiding groove; 8 b-a right air guide groove; 8 c-a basket drain hole;

9-frying the barrel; 9 a-left convex mesa; 9 b-right convex mesa;

10-heat dissipation fan blades.

Detailed Description

Referring to fig. 1A and 1B, there are shown exploded views of a scroll-type multi-cycle hot air pressurized air fryer and an upper shell to which the present application relates. The air fryer at least comprises a motor 2, a motor cover 1, a cooling assembly, a heating assembly and a frying barrel assembly which are sequentially arranged from top to bottom. The cooling assembly comprises a heat dissipation fan blade 10. The heating component comprises a volute upper cover plate 4, a turbine fan blade 5, a volute lower cover plate 6 and a heating pipe 7 which are sequentially arranged from top to bottom.

The upper volute cover plate 4 and the lower volute cover plate 6 form a closed volute-shaped hot air channel, and the turbine fan blade 5 is arranged in the hot air channel.

The components and their connections will be described in turn.

Referring to FIG. 2, there is shown a schematic view of the motor and motor cover of the scroll type multiple circulation hot air pressurized air fryer to which the present application relates. The motor 2 is provided with a motor shaft. The motor shaft on the motor 2 passes through the motor shaft hole on the motor cover 1, and the motor 2 is fixed on the motor cover 1 through screws, bolts or in other modes. A cooling component and a heating component are sequentially arranged in the motor cover 1. The motor cover 1, the heat dissipation fan blade 10, the volute upper cover plate 4 and the turbine fan blade 5 are respectively provided with corresponding shaft holes at the central positions, namely a motor shaft hole, a heat dissipation fan blade shaft hole, a volute upper cover plate shaft hole and a turbine fan blade shaft hole. Therefore, a motor shaft on the motor 2 can sequentially penetrate through the shaft holes to be connected with the heat dissipation fan blade 10 and the turbine fan blade 5, so that the motor 2 drives the heat dissipation fan blade 10 and the turbine fan blade 5 to rotate.

An air inlet hole and a cold air outlet are arranged on the motor cover 1. The air inlet can make the heat dissipation fan blade 10 suck cold air when in work. It should be noted that the air inlet hole is not essential, and the upper portion of the motor cover 1 may be a completely hollow ring, rectangle, square, etc. to increase the air inlet area. The cold air outlet is connected with an exhaust hood on the upper shell of the air fryer to exhaust cold air. The motor cover 1 is further provided with a control system 3 which can control the motor, so that the rotation direction and the rotation speed of the heat dissipation fan blade 10 and the turbine fan blade 5 are controlled.

Referring to fig. 3-5, a volute upper cover plate 4, a turbine fan blade 5 and a volute lower cover plate 6 in the heating assembly of the volute type multi-circulation hot air supercharging air fryer related to the application are shown. The upper cover plate 4 of the volute and the lower cover plate 6 of the volute are in a mirror symmetry shape. The two are sleeved together and are provided with concentric shafts, and the concentric shafts are attached and fixed for use to form a closed hot air channel. The volute upper cover plate curved surface 4a of the volute upper cover plate 4 and the volute lower cover plate curved surface 6a of the volute lower cover plate 6 form a volute curved hot air channel. The outlet of the volute of the centrifugal fan is provided with a tongue-shaped structure which is generally called as a volute tongue. The volute tongue can prevent gas from circulating in the volute. The volute curve of this application is equipped with two at least vortex tongue turning structures, and the end of vortex tongue turning structure is the air outlet. The shape and the size of the at least two vortex tongue turning structures can be the same or different, and for example, the at least two vortex tongue turning structures can be one or more of a flat tongue, a short tongue, a deep tongue and a sharp tongue. Preferably, the number of the vortex tongue turning structures is two, and the structure can increase the propagation area of hot air and does not make the structure too complicated and too high in cost. Thus, the hot air channel is arc-shaped, having one air inlet on the lower cover plate 6 of the volute and two air outlets 6c, 6d of the volute on the lower cover plate 6. The volute air outlets 6c and 6d are downward air-out and are communicated to the two air guide grooves on the fryer 8.

The turbine fan blade 5 is arranged in a volute curve hot air channel formed by the volute upper cover plate 4 and the volute lower cover plate 6. The turbine blades 5 may be made of a metal material. The turbine blade 5 is provided with a turbine blade shaft hole and a turbine blade 5 a. The turbine blade 5 can be made of two metal blades with surrounding edges through welding or riveting, and thus, various blade shapes are formed by overlapping. The sizes and the radians of the blades of the two metal fan blades with the surrounding edges can be different, and the blades can be vertical or have the radians. The double-layer blade solves the problem that the flanging material of the single-layer blade is not enough, the overall strength can be improved, and the manufacturing cost is lower. The turbine blades 5 may also be integrally formed.

The turbine fan blade 5 is driven by the motor 2 to rotate. The turbine fan blade has the advantages of large wind power and capability of outputting large wind power in a small space, so that the air guiding quantity is increased. The turbine fan blade 5 is driven by the motor 2 to rotate, and the rotation of the blade in the impeller drives the air to rotate and apply work to the air, so that the momentum of the air is increased. The air is thrown out to the periphery of the impeller under the action of centrifugal force.

Preferably, the inner space of the scroll formed by the upper scroll cover 4 and the lower scroll cover 6 is an eccentric scroll. The upper cover plate 4 of the volute and the lower cover plate 6 of the volute are sleeved together, and a heating tube 7 is arranged below. The heating pipe 7 may be a heating plate which penetrates and is fixed to the scroll lower cover plate 6 and the scroll upper cover plate 4 from bottom to top.

Referring to fig. 6-7, there is shown a fry basket 8 and a fry vat 9 of a fry vat assembly of a scroll multi-cycle hot air pressurized air fryer to which the present application relates.

The lower housing portion of the air fryer is provided with a fry basket 8 and a fry vat 9 which are movably connected together. The attachment of fry basket 8 to fry vat 9 is conventional, for example, fry basket 8 may snap onto fry vat 9 by snap fit. The frying basket 8 is provided with a plurality of air guide grooves, and the number of the air guide grooves is the same as that of the turning structures of the vortex tongues. For example, in FIGS. 6-7, basket 8 has two air guide slots, left air guide slot 8a and right air guide slot 8 b. The frying basket 8 is also provided with a frying basket leakage hole 8 c. The frying basket 8 is provided with food therein, and plays a role in placing the food to be baked and fried.

The bottom of the frying barrel 9 is provided with protruding table surfaces of the frying barrel, and the number of the protruding table surfaces is equal to that of the air guide grooves. For example, in fig. 6-7, the bottom of the frying barrel 9 is provided with a left convex platform surface 9a and a right convex platform surface 9b of the frying barrel, and the cross section of the left convex platform surface and the right convex platform surface is in a shape of Chinese character 'shan' at the bottom to form a structure with a high middle part and two low sides.

The hot air duct is enclosed by the left outlet 6c of the volute, the right outlet 6d of the volute, the left air guide groove 8a and the right air guide groove 8b on the frying basket 8 and the inner side wall of the frying barrel 9. The left air guide groove 8a on the frying basket 8 is matched with the left volute air outlet 6c on the lower volute cover plate 6; the right air guide groove 8b on the frying basket 8 is matched with the right volute air outlet 6d on the lower volute cover plate 6. The width of the left volute air outlet 6c and the right volute air outlet 6d on the lower volute cover plate 6 is respectively smaller than the width of the left air guide groove 8a and the right air guide groove 8b on the fry basket 8, and the distance from the left volute air outlet 6c and the right volute air outlet 6d to the air inlets of the left air guide groove 8a and the right air guide groove 8b is shorter, so that all air flowing out of the left volute air outlet 6c can enter the left air guide groove 8a on the fry basket 8 and all air flowing out of the right volute air outlet 6d can enter the right air guide groove 8b on the fry basket 8.

The bottom of the fry basket 8 is provided with a fry bucket left boss surface 9a and a fry bucket right boss surface 9b which enable the bottom surface of the fry bucket to be raised, namely, the fry bucket boss surfaces 9a and 9b form an upward channel, so that the heat-conducting airflow is guided to flow upwards from the bottom of the outer edge of the fry basket to the bottom position of the center of the fry basket. The junction of the fry vat boss surfaces 9a and 9b, i.e., the raised position of the bottom surface of the fry vat, may or may not be in contact with the bottom of basket 8, as long as the airflow is directed upward.

The working principle of the air fryer to which the present application relates is briefly explained below.

In the working state, the air fryer is divided into a cold air generating and discharging process and a hot air generating and discharging process. It should be appreciated that these two processes occur substantially simultaneously. For clarity, the two are described separately.

The cold air generating and discharging process will be described below.

Air is drawn into the interior of the air fryer housing from an air intake opening in the housing of the air fryer. The air suction opening can be arranged at any position of the air fryer, such as right above, obliquely above, laterally and rearwards, as long as the air suction opening can ensure the communication between the shell and the outside air.

A cold air cavity is formed between the upper surface of the upper cover plate 4 of the volute casing and the motor cover 1. The heat dissipation fan blade 10 is arranged in the cold air cavity. The cold air cavity is directly communicated with a cold air outlet on the motor cover 1 and then communicated with a cold air outlet of the exhaust cover. Under the action of the motor 2, negative pressure is formed around the heat dissipation fan blades 10, outside cold air is sucked into the shell and sucked into the motor cover, and the cold air and the shell are subjected to heat exchange fully, so that the temperature rise of the shell is effectively reduced. The heat dissipation fan blade 10 discharges redundant cold air to the outside of the cavity body, so that the temperature inside the machine is ensured to be excessively high, a user is prevented from being scalded, and the temperature of the machine is ensured to be normal during working.

The hot air generation and discharge process will be described below.

The arrows in fig. 1A show the hot air flow path of the scroll-type multi-cycle hot air pressurized air fryer to which the present application relates. A scroll-like, preferably eccentric scroll-like, is formed between the scroll upper cover plate 4 and the scroll lower cover plate 6. The turbine fan blade 5 is arranged in a volute curve hot air channel formed by the volute upper cover plate 4 and the volute lower cover plate 6. When the electric fan works, the turbine fan blade 5 is driven by the motor 2 to rotate. The air is thrown out around the impeller under the action of centrifugal force, and is supplied to the volute air outlets 6c and 6d through the volute, so that the air is pressurized and discharged. After the air in the impeller is discharged, the pressure in the impeller is lower than that of the air inlet, and new air is sucked in from the central hole 6b of the lower volute cover plate in the middle of the lower volute cover plate 6 below the turbine fan blade 5 under the action of pressure difference. And this new air passes through the heat-generating tube 7 before being sucked in and thus has been heated.

The turbine fan blade 5 blows hot air to the lower shell of the fryer through the left volute air outlet 6c or the right volute air outlet 6d of the lower volute cover plate 6 after the heated air is pressurized, namely the fryer barrel assembly. The hot air vertically reaches the bottom of the basket 8 along the left and right air guide grooves 8a and 8b outside the basket 8 and contacts the bottom of the frying tub 9. Those skilled in the art will appreciate that the turbine blades 5, acting as turbine blades, can provide sufficient power to blow hot air downwardly to the bottom of the fry vat, or very close to the bottom of the fry vat.

The hot air reaching the bottom of the frying tub 9 spreads upward at the bottom along the left and right boss faces 9a and 9b at the bottom of the frying tub 9, and then heats the food in the basket 8 through the basket leakage holes 8c at the bottom of the basket 8. The upwardly diffused hot air is sucked through the heat generating pipe 7 by the center hole 6b of the lower cover plate of the scroll. Thus, the hot air forms a reciprocating circulation in the air fryer and uniformly heats the food.

Optionally, when the volute tongue structures of the left volute outlet 6c and the right volute outlet 6d are completely the same, the turbine blade may rotate in one direction, and the air discharged from the two outlets is the same. The blades of the turbine fan blade can be straight inserting pieces or arc inserting pieces so as to control the size of the air outlet.

Optionally, the volute left air outlet 6c or the volute right air outlet 6d has different volute tongue structures, for example, the air outlets have different sizes or different volute tongue structures, so that different air volumes of two specific air outlets can be selected to realize different air volumes entering the left side and the right side of the frying barrel. And then can add the baffle in the middle of frying the basket to put into different food in the left and right sides of frying the basket, fry and roast to the realization is fried and is baked the food of different grade type.

Although the embodiments disclosed in the present application are described above, the descriptions are only for the convenience of understanding the present application, and are not intended to limit the present application. It will be apparent to persons skilled in the relevant art that various modifications and variations can be made in the form and details of the disclosed embodiments without departing from the spirit and scope of the disclosure.

Claims (10)

1. A volute type multi-circulation hot air pressurized air fryer is characterized by comprising a heating assembly, wherein the heating assembly comprises a volute upper cover plate and a volute lower cover plate; the upper cover plate and the lower cover plate of the volute together form the volute, and the turbine fan blade is arranged in the volute; the volute is provided with a plurality of volute tongue turning structures.

2. An air fryer according to claim 1, wherein the scroll outlet at the end of said plurality of scroll turning structures is located on said lower deck.

3. An air fryer according to claim 1, wherein said scroll is an eccentric scroll.

4. The air fryer according to claim 1, wherein the blades of the turbine blade are straight blades or arcuate blades.

5. An air fryer according to claim 1, wherein the blades of the turbine blade are formed from two metal blades with peripheral edges by welding or riveting.

6. An air fryer according to claim 1, wherein said plurality of vortex tongue turning structures are identical.

7. An air fryer according to claim 1, wherein said plurality of vortex tongue turning structures are different.

8. The air fryer according to any one of claims 1 to 7, wherein the air fryer is provided with a fryer basket, the fryer basket is provided with air guide grooves, the air guide grooves correspond to the turning structures of the vortex tongues, so that air enters the air guide grooves from the turning structures of the vortex tongues, and the number of the air guide grooves is the same as that of the turning structures of the vortex tongues.

9. The air fryer according to claim 8, wherein the air fryer is provided with a frying barrel, the bottom of the frying barrel is provided with a plurality of convex table surfaces, the number of the convex table surfaces is equal to the number of the air guide grooves, and the structure with a high middle part and two low sides is formed.

10. The air fryer according to claim 2, wherein the air fryer is provided with a fryer basket, the fryer basket is provided with an air guide groove, the air guide groove corresponds to the vortex tongue turning structure, so that air enters the air guide groove from the vortex tongue turning structure, and the number of the air guide groove is the same as that of the vortex tongue turning structure;

the width of the volute air outlet is smaller than that of the corresponding air guide groove.

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