CN114857084A - Arc-shaped fan and air fryer - Google Patents

Arc-shaped fan and air fryer Download PDF

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Publication number
CN114857084A
CN114857084A CN202210639916.6A CN202210639916A CN114857084A CN 114857084 A CN114857084 A CN 114857084A CN 202210639916 A CN202210639916 A CN 202210639916A CN 114857084 A CN114857084 A CN 114857084A
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China
Prior art keywords
fan
blade
arc
face
shaped
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Pending
Application number
CN202210639916.6A
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Chinese (zh)
Inventor
张一驰
曹友兵
白荣杰
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Ningbo Careline Intelligent Technology Co Ltd
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Ningbo Careline Intelligent Technology Co Ltd
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Priority to CN202210639916.6A priority Critical patent/CN114857084A/en
Publication of CN114857084A publication Critical patent/CN114857084A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J37/00—Baking; Roasting; Grilling; Frying
    • A47J37/06—Roasters; Grills; Sandwich grills

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention discloses an arc-shaped fan and an air fryer, which comprise a central connecting part and blades, wherein the blades are uniformly connected and arranged around the central connecting part in the circumferential direction; the first fan face is vertically arranged on the surface of the blade, and the first fan face deflects towards the rotating direction of the arc-shaped fan. The fan blade with the arc-shaped structure can throw air in the fan out with larger power, so that larger air volume is obtained, and the problems in the prior art are solved.

Description

Arc-shaped fan and air fryer
Technical Field
The invention relates to the field of cooking appliances, in particular to an arc-shaped fan and an air fryer.
Background
In the prior art, fans are arranged inside the air fryer and are mainly used for driving hot air in a cavity of the air fryer to flow at a high speed in a circulating manner, so that the hot air for food is fried and baked. The blades of the fan in the existing air fryer are all in a structure extending along the radial direction of the fan in a straight divergence mode, the fan has the defect of low air quantity, and air in the fan cannot be thrown out at high speed all around, so that the hot air circulation efficiency in the whole air fryer is low, the food cooking time is long, and the quality is poor. A new fan is needed to solve this problem.
Disclosure of Invention
The invention provides an arc-shaped fan and an air fryer, which can throw out air in the fan with larger power by adopting blades with arc-shaped structures, thereby obtaining larger air volume and solving the problems in the prior art.
In order to achieve the above object, in a first aspect, the present invention provides the following technical solutions: an arc-shaped fan comprises a central connecting part and blades, wherein the blades are uniformly connected and arranged around the central connecting part in the circumferential direction, the whole blades are of an arc-shaped structure, and the arc-shaped extending direction of the blades is the same as the rotating direction of the arc-shaped fan; the first fan face is vertically arranged on the surface of the blade, and faces to the deflection of the rotating direction of the arc-shaped fan, the blade extends along the rotating direction of the arc-shaped fan, and the throwing-out direction of air is the same as the rotating direction of the arc-shaped fan, so that in the rotating process of the fan, the first fan face plays a role in throwing out the air inside the fan at high speed all around, and can throw out the air inside the fan with larger power, so that larger air volume is obtained, the improvement of hot air circulation efficiency in the air fryer is realized, and the purposes of reducing food cooking time and improving cooking quality are achieved.
Preferably, the first fan surface is provided on an edge of the blade on a front side with respect to a rotational direction of the arc fan, and the first fan surface is perpendicular to the blade, and such first fan surface is provided on the edge on the front side with respect to the rotational direction of the fan that the first fan surface can more smoothly throw air out in the rotational direction of the arc fan.
Preferably, the blade is provided with a second fan surface at the edge of the rear side relative to the rotation direction of the arc fan, the second fan surface at least partially extends to the free end of the blade, the second fan surface is arranged opposite to the first fan surface, so that each blade is provided with two fan surfaces, the front surface is provided with the first fan surface and the rear surface is provided with the second fan surface by taking the rotation direction as a reference, the second fan surface can split the air flow at the outlet of the blade and reduce the mixed flow at the outlet, and the larger air output is achieved, so that the first fan surface and the second fan surface are matched to increase the fan area, reduce the air flow disorder caused by air flow rebound, and ensure that the air flow is more regular.
Preferably, the first end of the first fan surface extends to the free end of the blade, and the second end of the first fan surface extends to the root of the blade, so that the first fan surface can utilize the length of the front edge of the blade as much as possible, and the effect of the first fan surface is maximized.
Preferably, the height H1 of the first fan surface is greater than the height H2 of the second fan surface, and the first fan surface is higher than the second fan surface, so that the second fan surface is matched with the first fan surface, the air flow is smoothly thrown out, and front and back interference blocking is not caused.
Preferably, the blades, the first fan face connected with the blades and the second fan face connected with the blades are formed by bending a blank sheet, and the sum of the height H1 of the first fan face and the height H2 of the second fan face is not more than the circumferential distance H between adjacent blades.
Preferably, the first fan surface has a circular arc center angle θ of 180 ° - (β) 1 +β 2 ) ≦ 90 °, where β 1 is the inlet angle of the blade, β 2 Such an angular setting allows an optimum air output to be achieved for the exit angle of the blade.
Preferably, the inlet angle β of the blade is 1 In the range 73 ° -77 °, and/or the exit angle β of said blade 2 In the range of 60 DEG to 65 DEG, beta 1 And beta 2 The numerical range is most reasonable, and the optimal air output can be achieved.
Preferably, the first fan surface and the second fan surface are provided with inclined parts on the upper edges of one ends facing the blade root, and the inclined parts have the effect of guiding the flow.
In a second aspect, the invention further provides an air fryer, which comprises a machine body and a cooking cavity arranged in the machine body, wherein an air duct plate is arranged in the cooking cavity, an inner concave cavity is formed in the air duct plate, the arc-shaped fan is arranged in the inner concave cavity, and after the arc-shaped fan is adopted, the circulation efficiency of hot air blown into the cooking cavity is improved, the cooking time can be shortened, and the taste of food is improved. The arc-shaped fan is positioned in the concave cavity, so that the hot air in the cooking cavity of the air fryer can flow out of the center of the upper fan under the action of negative pressure, and the hot air entering the fan is thrown out of the fan, dispersed along the air duct plate and flows downwards into the cooking cavity.
Compared with the prior art, the invention has the beneficial effects that:
the fan is designed into an arc-shaped structure, and the extending direction of the arc is the same as the rotating direction of the fan, so that when the fan rotates, air in the fan can be thrown out with larger power, and larger air volume is obtained; the fan still includes the arc blade and establishes the first fan face of arc and the second fan face that is located the rear edge reason at blade front edge reason, first fan face is to the fan direction of rotation deflection, the fan rotates the in-process, big fan face plays the effect of throwing away the inside air of fan to high speed all around, and then obtains bigger amount of wind, the second fan face plays and shunts the air current in blade exit, reduce the mixed flow in exit, thereby realize obtaining bigger amount of wind.
Drawings
FIG. 1 is a perspective view of an arc fan blade according to the present invention;
FIG. 2 is a perspective view of a second view of the arc fan blade of the present invention;
FIG. 3 is an enlarged view of the structure at A in FIG. 2;
FIG. 4 is a schematic view of the rotation direction and angle of the arc fan blade of the present invention;
FIG. 5 is a cross-sectional structural view of the air fryer of the present invention;
FIG. 6 is a schematic view of the installation state of the arc fan blade of the present invention.
Reference numerals:
1. the cooking machine comprises a machine body, 11, a central connecting part, 12, blades, 13, a second fan surface, 14, a first fan surface, 15, an inclined part, 2, an air duct plate, 3, a cooking cavity, 4 and an inner concave cavity.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in fig. 1-6, the invention provides the following technical solutions for solving the problems of the prior art that the blades of the fan in the air fryer are all in a straight divergent extension structure, the air volume of the fan is low, the circulation efficiency of hot air in the whole air fryer is low, the cooking time of food is long, and the quality of food is poor: the fan comprises a central connecting part 11 and blades 12, wherein the blades 12 are uniformly connected and arranged around the peripheral direction of the central connecting part 11, the whole blades 12 are of an arc-shaped structure, and the arc-shaped extending direction of the blades is the same as the rotating direction of the arc-shaped fan; the fan also comprises a first fan surface 14 which is vertically arranged on the surface of the blade 12, and the first fan surface 14 deflects towards the rotating direction of the arc-shaped fan. Specifically, the first fan surface 14 may be disposed on the edge of the blade 12, which is located at the front side of the rotation direction of the arc fan, and the first fan surface 14 is perpendicular to the blade 12, so that the blade 12 extends along the rotation direction of the arc fan, and the throwing-out direction of the air is the same as the rotation direction of the arc fan, so that during the rotation process of the fan, the first fan surface 14 plays a role of throwing out the air inside the fan at high speed all around, and can throw out the air inside the fan with greater power, thereby obtaining greater air volume, achieving the improvement of the hot air circulation efficiency in the air fryer, and achieving the purposes of reducing the food cooking time and improving the cooking quality.
Specifically, the central connection portion 11 and the blades 12 are of an integrally formed structure, a connection hole is formed in the center of the central connection portion 11 and used for being connected with a main shaft of a motor, meanwhile, in order to improve the strength of the whole fan, a circle of convex ribs can be arranged on the central connection portion 11 and can sequentially extend to the blades 12, and therefore the positions where the roots of the blades 12 are connected with the central connection portion 11 have enough strength.
As for the first fan surface 14, a first end of the first fan surface 14 extends to the free end of the blade 12, and a second end of the first fan surface 14 extends to the root of the blade 12, so that the first fan surface 14 can utilize the length of the front side edge of the blade 12 as much as possible to maximize the effect of the first fan surface 14, and the two ends of the first fan surface 14 are provided with circular arc transitions to facilitate the flow of air.
In this embodiment, as shown in fig. 1 to 3, a second fan surface 13 is disposed on an edge of the rear side of the blade 12 relative to the rotating direction of the arc fan, the second fan surface 13 at least partially extends to the free end of the blade 12, the second fan surface 13 is disposed opposite to the first fan surface 14, so that each blade 12 has two fan surfaces, based on the rotating direction, the front surface is the first fan surface 14, the rear surface is the second fan surface 13, the second fan surface 13 can split the air flow at the outlet of the blade 12 to reduce the mixed flow at the outlet, thereby achieving a larger air output, so that the first fan surface 14 and the second fan surface 13 cooperate to increase the fan area, reduce the air turbulence caused by airflow bounce, make the air flow more regular, and specifically, the length of the second fan surface 13 may be significantly shorter than the first fan surface 14, the air flow can be quickly divided by the second fan section 13, and enough air outlets can be reserved for the air flow to pass through.
The height H1 of the first fan face 14 is greater than the height H2 of the second fan face 13, the height H1 of the first fan face 14 can be set to 10mm-16mm, the height H2 of the second fan face 13 can be set to 5mm-11mm, the first fan face 14 is higher than the second fan face 13, which is beneficial for the second fan face 13 to match with the first fan face 14, so that the air flow is smoothly thrown out, and the front and back interference blocking is not caused, and the inclined portions 15 are respectively arranged on the upper edges of the first fan face 14 and the second fan face 13 facing the root of the blade 12, and the inclined portions 15 have the flow guiding effect.
In the embodiment, in order to facilitate the formation of the blades 12, the blades 12 and the first fan surface 14 and the second fan surface 13 connected to the blades 12 are formed by bending a blank piece, and the sum of the height H1 of the first fan surface 14 and the height H2 of the second fan surface 13 is not greater than the circumferential distance H between adjacent blades 12, such an arrangement enables an integral structure of the blades 12, the first fan surface 14 and the second fan surface 13 to be formed by bending one blank piece, so as to reduce the production cost of the fan, wherein the blank piece is preferably a metal piece, and the blank piece and the central connecting part can also be integrally formed.
In the present embodiment, as shown in fig. 4, the angles between the blades 12 and the first fan face 14 are not arbitrarily set, and in order to achieve the optimum air output, the arc center angle θ of the first fan face 14 is 180 ° - (β) 1 +β 2 ) ≦ 90 ° where β 1 Is the inlet angle, beta, of said blade 12 2 Is the outlet angle of the blade 12, wherein the inlet angle β of the blade 12 1 In the range of 73 to 77, said outlet angle beta of the blades 12 2 In the range of 60 DEG to 65 DEG, beta 1 And beta 2 The numerical range is most reasonable, and the optimal air output can be achieved through the angle setting.
In particular embodiments, the inlet angle β of the blade 12 may be adjusted 1 Set at 73 deg., and exit angle beta 2 Is set to 60 deg., the arc center angle theta of the first fan face 14 is 180 deg. (beta) 1 +β 2 ) Since 180 ° - (73 ° +60 °) is 47 °, the arc center angle θ of the first fan surface 14 is equal to or smaller than 90 °.
The inlet angle beta of the blade 12 may also be adjusted 1 Set at 77 deg., and exit angle beta 2 Is set to 65 deg., the arc center angle theta of the first fan plane 14 is 180 deg. (beta) 1 +β 2 ) 180 ° - (77 ° +65 °) 38 °, the arc center angle θ of the first fan face 14 is ≦ 90 °.
Since the direction of the first fan face 14 is along the rotation direction of the arc fan, and is relatively constant, the arc center angle θ of the first fan face 14 can determine the length of the first fan face 14, so the length of the first fan face 14 can be adjusted by selecting the arc center angle θ in the range of 38 ° to 47 °, and the length of the first fan face 14 in this range can form a higher air output.
Whereas in practice the inlet angle beta of the blade 12 1 Is located in a position connected to the central connecting portion 11, so that beta 1 Can be set to a fixed value, while the exit angle beta 2 The value of (b) varies according to the length of the first fan surface 14, such as the exit angle β 2 Originally 65 °, inlet angle β 1 Is 77 deg., the arc center angle theta is 38 deg., and the outlet angle beta is increased when the first fan face 14 is designed to be longer 2 Is reduced to 60 DEG, the entry angle beta 1 If the value of (b) is constant, the arc center angle θ is 43 °.
In this embodiment, still provide an air fryer, including organism 1 and the culinary art chamber 3 of setting in organism 1 inside, culinary art chamber 3 in install the arc fan as in the embodiment above, adopt behind the arc fan to make the hot-air circulation efficiency who blows in culinary art chamber 3 improve, can shorten the culinary art time, improve the taste of food, the below of arc fan can be close to and set up the heating tube for the air current that the arc fan produced can be heated by the heating tube the very first time. Wherein, the arc fan can be set up in the top of culinary art chamber 3, perhaps lateral part all around, also can set up in the below, as long as can form hot air circulation in culinary art chamber 3 can.
Meanwhile, as shown in fig. 5-6, an air duct plate 2 is arranged above the cooking cavity 3, an inner concave cavity 4 is formed at the top of the air duct plate 2, the arc-shaped fan is positioned in the inner concave cavity 4, the diameter of the fan blade is adjusted according to the size of the air duct, and the conventional diameter is
Figure BDA0003683417750000071
This arrangement allows the hot air in the cooking chamber of the air fryer to flow under negative pressure towards the centre of the upper fan, the hot air entering the fan being thrown out of the fan and dispersed along the duct board 2 and flowing downwards into the cooking chamber.
It should be noted that all directional indicators (such as up, down, left, right, front, and back) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Claims (10)

1. A curved fan, comprising:
a center connection part (11);
blade (12), round central connecting portion (11) circumference even connection setting, its characterized in that:
the whole blade (12) is of an arc-shaped structure, and the arc-shaped extending direction of the blade is the same as the rotating direction of the arc-shaped fan;
the first fan face (14) is vertically arranged on the surface of the blade (12), and the first fan face (14) deflects towards the rotating direction of the arc-shaped fan.
2. The curved fan of claim 1, wherein: the first fan face (14) is arranged on the edge of the front side of the blade (12) relative to the rotating direction of the arc-shaped fan, and the first fan face (14) is perpendicular to the blade (12).
3. The curved fan of claim 1, wherein: the edge of the blade (12) opposite to the rear side of the arc-shaped fan in the rotating direction is provided with a second fan surface (13), and at least part of the second fan surface (13) extends to the free end part of the blade (12).
4. The arc fan as claimed in claim 1, wherein: the first end of the first fan surface (14) extends to the end part of the free end of the blade (12), and the second end of the first fan surface (14) extends to the root part of the blade (12).
5. The curved fan of claim 3, wherein: the height H1 of the first fan surface (14) is larger than the height H2 of the second fan surface (13).
6. The curved fan of claim 3, wherein: the blades (12), the first fan face (14) and the second fan face (13) connected with the blades are formed by bending a blank piece, and the sum of the height H1 of the first fan face (14) and the height H2 of the second fan face (13) is not more than the circumferential distance H between the adjacent blades (12).
7. The curved fan of claim 1, wherein: the arc center angle theta of the first fan surface (14) is 180 DEG- (beta) 1 +β 2 ) ≦ 90 °, where β 1 is the inlet angle of the blade (12), β 2 Is the exit angle of the blade (12)。
8. The curved fan of claim 7, wherein: inlet angle beta of said blade (12) 1 In the range 73 DEG to 77 DEG and/or the exit angle beta of said blade (12) 2 In the range of 60 to 65.
9. The curved fan of claim 3, wherein: the first fan surface (14) and the second fan surface (13) are provided with inclined parts (15) towards the upper edges of the root parts of the blades (12).
10. The utility model provides an air fryer, includes organism (1) and sets up cooking chamber (3) inside organism (1), cooking chamber (3) in be provided with wind channel board (2), its characterized in that: the air duct plate (2) is provided with an inner concave cavity (4), and the arc-shaped fan as claimed in any one of claims 1 to 9 is installed in the inner concave cavity (4).
CN202210639916.6A 2022-06-08 2022-06-08 Arc-shaped fan and air fryer Pending CN114857084A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210639916.6A CN114857084A (en) 2022-06-08 2022-06-08 Arc-shaped fan and air fryer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210639916.6A CN114857084A (en) 2022-06-08 2022-06-08 Arc-shaped fan and air fryer

Publications (1)

Publication Number Publication Date
CN114857084A true CN114857084A (en) 2022-08-05

Family

ID=82625068

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210639916.6A Pending CN114857084A (en) 2022-06-08 2022-06-08 Arc-shaped fan and air fryer

Country Status (1)

Country Link
CN (1) CN114857084A (en)

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