CN218105631U - Heating structure of air fryer - Google Patents

Abstract

The utility model discloses a heating structure of an air fryer, the air fryer comprises a machine body and a cooking cavity arranged in the machine body, the heating structure of the air fryer comprises a heating tube arranged in the cooking cavity, and at least part of the heating tube is spirally arranged; the fan is arranged on one side of the heating tube and is matched with the heating tube to generate hot air flow so as to enable the hot air flow to circulate in the cooking cavity, and the distance H between two adjacent circles of the spiral part of the heating tube meets the requirement that H is less than or equal to 10mm and less than or equal to 16mm. The utility model discloses a to the reasonable setting in clearance between the adjacent two rings of heating tube can solve the not good and obstructed problem of thermal cycle of heating tube's of current air fryer heating efficiency.

Description

Heating structure of air fryer

Technical Field

The utility model relates to a cooking appliance field specifically is a heating structure of air fryer.

Background

The heating structure of the air fryer in the prior art comprises a fan and a heating pipe positioned below the fan, wherein the heating pipe is used for heating hot air in a cavity of the air fryer, and the fan is mainly used for driving the hot air to circularly flow in the cavity of the air fryer at a high speed, so that the hot air for food is fried and baked.

The heating tube in the existing air fryer is generally spiral, the starting end is positioned at the outermost side and is provided with a lead terminal, and the tail end extends to the innermost side and then extends to the outer side of the heating tube adjacent to the lead terminal through bending to form another lead terminal. And at present, the gap setting between two adjacent turns of the heating tube in the spiral shape has no specific standard range, if the gap is too small, the wind resistance generated to the downward airflow generated by the fan is too large, the heat circulation is influenced, and if the gap is too large, the whole length of the heating tube is too short, so that the power of the heating tube is too low, the heating efficiency of the air in the cavity is influenced, especially, the gap of the heating tube is made larger in the production process of the existing air fryer from the aspects of process and cost, and in fact, the ordinary skilled person in the art has not realized that the gap between two adjacent turns of the heating tube is influenced on the heating efficiency of the air in the cavity, so the gap setting between two adjacent turns of the heating tube is particularly important.

SUMMERY OF THE UTILITY MODEL

The utility model provides a heating structure of pot is fried to air can solve the current problem that heating efficiency is not good and thermal cycle is obstructed of frying pot interior heating tube of air through the reasonable setting in clearance between two adjacent circles to the heating tube.

In order to achieve the above object, the utility model provides a following technical scheme: the heating structure of the air fryer comprises a machine body and a cooking cavity arranged in the machine body, and the heating structure of the air fryer comprises a heating pipe which is arranged in the cooking cavity, wherein at least part of the heating pipe is spirally arranged; the fan corresponds the setting with the heating tube, produces the hot gas flow circulation in making the culinary art chamber with the heating tube cooperation, and the hot gas flow circulation can cook the food of intracavity and carry out lasting heating culinary art, wherein, the interval H between two adjacent circles of spiral part of heating tube satisfy 10mm ≦ H ≦ 16mm, set up the interval between two adjacent circles of heating tube between 10mm to 16mm and make the heating tube can not influence the thermal cycle to the bigger windage that the downward air current that the fan produced, can also make the length of heating tube enough satisfy the requirement of the heating efficiency of heating tube simultaneously, reach the heating tube and can compromise cost and product efficiency.

Preferably, two lead terminals at the beginning and the end of the heating tube are positioned at the edge of the heating tube, the heating tube connected with the lead terminals is spirally bent from outside to inside and is connected with the inside, the heating tubes connected with the two lead terminals are arranged at intervals and are positioned on the same plane, the heating tube is bent by adopting the structure, so that the overall strength of the heating tube is high, the heating tube cannot axially extend due to bending, therefore, the heating surface of the heating tube is partially positioned on the same plane, the height of the middle part of the heating tube can be effectively reduced, namely, the occupied space of the heating tube in an air fryer cooking cavity is reduced, and the process is relatively simple.

Preferably, the lead terminal is formed by bending the end part of the heating tube, so that the formed lead terminal is beneficial to supporting the whole heating tube and ensures the stability of the heating tube in the using process.

As a further preference, the distance H between two adjacent turns of the spiral part of the heating tube satisfies 11mm ≦ H ≦ 14mm, and the heating tube with the distance H in this range can achieve the optimal effect with both cost and product efficiency.

Preferably, the fan and the heating tube are arranged at the top of the cooking cavity, the fan is arranged above the heating tube, the spiral part of the heating tube is at least partially overlapped with the projection of the fan in the horizontal direction, the fan and the heating tube can form hot air flow circulation from top to bottom, so that food can be uniformly heated, heat generated by the spiral part of the heating tube can be directly taken away by vertical downward air flow generated by the fan, and the heating cooking efficiency is better.

Preferably, the heating pipe is arranged at a position below the fan and close to the fan, so that the height of the whole heating structure is reduced, and meanwhile, the high-efficiency heating efficiency is ensured.

Furthermore, the cooking cavity is internally provided with an air duct plate, an inner concave cavity is formed inside the air duct plate, the heating pipe and the fan are both positioned in the inner concave cavity, the air duct plate is used for accommodating the heating pipe and the fan so that the air flow generated by the fan can only downwards pass through the heating pipe, the heating efficiency of the air flow can be improved, and the smooth operation of heat circulation is facilitated.

As preferred, interior concave cavity include first interior concave cavity and set up the interior concave cavity of second at first interior concave cavity top, the fan be located the interior concave cavity of second, the heating tube be located first interior concave cavity, the area of first interior concave cavity be greater than the area of the interior concave cavity of second, leave the clearance between the inner wall of first interior concave cavity and the heating tube, can let thermal cycle's air current up flow back to the interior concave cavity of second, and the interior concave cavity space of second is narrow and small, makes the thermal cycle air current that enters into it can be inhaled by the fan to the at utmost and push down, is favorable to improving thermal cycle efficiency and heating efficiency.

Preferably, the bent shape of the heating tube is matched with the inner shape of the first inner concave cavity, so that a longer heating tube is obtained in a limited space in the air fryer as much as possible, and the power of the heating tube is higher.

Preferably, the lead terminals of the heating tube are fixedly arranged on the air duct plate and connected to the circuit board of the air fryer, one side of the heating tube, which is far away from the lead terminals, is fixed on the air duct plate through at least one fastener, and the heating tube can be firmly arranged and cannot shake through the fastener and the lead terminals.

Compared with the prior art, the beneficial effects of the utility model are that:

through the reasonable setting to the clearance between two adjacent circles of heating tube, can realize that the heating tube satisfies sufficient heating efficiency for the fan windage than lower under the condition to solved the not good and obstructed problem of thermal cycle of heating tube heating efficiency who exists for a long time in the air fryer that has now to the field of technical personnel, had fine popularization and application prospect.

Drawings

FIG. 1 is a three-dimensional structure view of the heating tube of the present invention;

FIG. 2 is a top view of the heating tube of the present invention;

FIG. 3 is a half-section structural view of the air fryer of the present invention;

FIG. 4 is a three-dimensional sectional structural view of the air fryer of the present invention;

fig. 5 is a partial three-dimensional structure view of the air fryer of the present invention.

Reference numerals:

1. heating tube, 11, lead terminal, 2, wind channel board, 3, fan, 4, culinary art chamber, 5, fastener, 6, interior concave cavity, 61, the interior concave cavity of second, 62, first interior 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. 1-5, the utility model provides a solution to the problems of poor heating efficiency and blocked thermal cycle of the heating tube in the existing air fryer, which provides the following technical solution: firstly, the utility model provides a following technical scheme: a heating structure of an air fryer comprises a machine body and a cooking cavity 4 arranged in the machine body, wherein the heating structure of the air fryer comprises a heating pipe 1 arranged in the cooking cavity 4, and at least part of the heating pipe 1 is spirally arranged; the fan 3 is arranged corresponding to the heating tube 1, specifically, the fan 3 is arranged at one side of the heating tube 1 and is matched with the heating tube 1 to generate hot air flow so as to enable the cooking cavity 4 to form hot air flow circulation, the hot air flow circulation can continuously heat and cook food in the cooking cavity 4, wherein the distance H between two adjacent circles of the spiral part of the heating tube 1 satisfies 10mm ≦ H ≦ 16mm, and the distance between two adjacent circles of the heating tube 1 is arranged between 10mm and 16mm so that the heating tube 1 cannot generate large wind resistance to downward air flow generated by the fan, the heat circulation is affected, meanwhile, the length of the heating tube 1 can be enough to meet the requirement of the heating efficiency of the heating tube 1, and the cost and the product efficacy of the heating tube 1 can be both considered.

Specifically, in one heating tube 1, the distance H between two adjacent coils is not constant, and the distance H between different positions can be changed and adjusted according to the situation of the installation position and the actual situation of the processing technology, as long as the distance H between all the positions in the heating tube 1 is between 10mm and 16mm. As a preferred scheme, the distance H between two adjacent turns of the spiral part of the heating tube 1 satisfies 11mm ≦ H ≦ 14mm, the heating tube 1 with the distance H within this range can achieve the optimal effect of both cost and product efficiency, in the production design process of the existing air fryer, the design of the heating tube 1 is usually two directions, one direction is to ensure the thermal cycle efficiency and reduce the length of the heating tube 1 to reduce the cost, meanwhile, the cooking time needs to be prolonged, the other direction is to increase the length of the heating tube 1 to ensure the heating efficiency of the heating tube 1, the problem of the thermal cycle efficiency is rarely considered, and it is difficult for a person skilled in the art to achieve a design scheme that both the two design directions are considered.

If the distance H between two adjacent turns of the spiral part of the heating tube 1 is set to be 11mm, the length of the heating tube 1 can be set to be L1, and if H is set to be 14mm, the length of the heating tube 1 is L2 under the condition that the whole width dimension of the heating tube 1 is not changed, and L2 is greater than L1, so that the heating efficiency of the heating tube 1 can be improved, and meanwhile, the H has enough space between 11mm and 14mm to allow hot air to pass smoothly, and the requirement of the heat circulation efficiency can also be met.

In this embodiment, as shown in fig. 1-2, the two lead terminals 11 at the beginning and end of the heating tube 1 are located at the edge of the heating tube 1, the heating tube 1 connected to the lead terminals 11 is spirally bent from outside to inside and is connected inside, the heating tubes connected to the two lead terminals 11 are arranged at intervals and are located on the same plane, the heating tube 1 is folded in half and then bent, the overall strength is high, the heating tube 1 does not extend axially due to bending, therefore, the heating surface of the heating tube 1 is located on the same plane, the height of the middle part of the heating tube can be effectively reduced, that is, the occupied space of the heating tube in the cooking cavity of the air fryer is reduced, the process is relatively simple, and the processing efficiency is relatively high.

Simultaneously, lead terminal 11 for the tip of heating tube 1 bending type become, lead terminal 11 that forms like this is favorable to supporting whole heating tube 1, guarantees the stability of heating tube 1 in the use, lead terminal 11 can be vertical upwards extend for link to each other with the circuit board, and the structure of buckling can improve the support nature to heating tube 1.

In this embodiment, fan 3 and heating tube 1 set up the top of culinary art chamber 4, wherein fan 3 sets up in heating tube 1's top, heating tube 1's spiral portion and fan 3 at least partial coincidence of projection on the horizontal direction, fan 3 can form the hot gas flow circulation from top to bottom with heating tube 1, are favorable to heating food evenly, and the heat that heating tube 1's spiral portion produced can directly be taken away by the vertical decurrent air current that fan 3 produced in addition, and heating cooking efficiency is better.

In practical application, the fan 3 and the heating tube 1 can be arranged at the peripheral side or the bottom of the cooking cavity 4, and hot air flow circulation can be formed in the cooking cavity 4, and the heating tube 1 is always arranged on the flow path of the air flow generated by the fan 3 to quickly form hot air flow.

In order to enclose a cooking cavity 4 and realize thermal cycle, the cooking cavity 4 is internally provided with the air duct plate 2, the air duct plate 2 can be arranged above the cooking cavity 4 and is used for enclosing the cooking cavity 4, an inner concave cavity 6 is formed inside the air duct plate 2, the heating tube 1 and the fan 3 can be positioned in the inner concave cavity 6, the air duct plate 2 is used for accommodating the heating tube 1 and the fan 3, so that the air flow generated by the fan 3 can only downwards pass through the heating tube 1, the heating efficiency of the air flow can be improved, and the smooth operation of the thermal cycle is also facilitated. The air duct plate 2 can be installed on the upper core of the air fryer, the cooking cavity 4 is located on the lower core, if the upper core and the lower core can be turned over and opened, the heating tube 1 and the fan 3 can be exposed, the cleaning is convenient, and the air duct plate 2 is utilized to accommodate the heating tube 1 and the fan 3, so that the overall height of the air fryer can also be reduced.

In this embodiment, as shown in fig. 3-5, the inner cavity 6 may include a first inner cavity 62 and a second inner cavity 61 disposed at the top of the first inner cavity 62, the fan 3 is disposed in the second inner cavity 61, the heating tube 1 is disposed in the first inner cavity 62, the area of the first inner cavity 62 is greater than that of the second inner cavity 61, a gap is left between the inner wall of the first inner cavity 62 and the heating tube 1, the thermal cycle airflow can flow upwards to flow back into the second inner cavity 61, and the second inner cavity 61 is narrow in space, so that the thermal cycle airflow entering the second inner cavity can be sucked by the fan 3 to the maximum extent and pushed out downwards, which is beneficial to improving the thermal cycle efficiency and the heating efficiency.

The bent shape of the heating tube 1 is matched with the inner shape of the first inner concave cavity 62, so that a longer heating tube 1 can be obtained in a limited space in the air fryer as much as possible, the power of the heating tube is higher, as shown in fig. 5, the first inner concave cavity 62 is of a substantially rectangular structure, and the heating tube 1 is also of a spiral rectangular structure after being bent.

In this embodiment, heating tube 1's lead terminal 11 install and fix on wind channel board 2, and be connected to on the circuit board of air fryer, heating tube 1 on keep away from one side of lead terminal 11 and fix on wind channel board 2 through at least one fastener 5, can guarantee through fastener 5 and lead terminal 11 that heating tube 1 installs firmly and can not rock, fastener 5's one end can be connected with wind channel board 2 through the fastener, the other end can carry out the joint with heating tube 1, easy to assemble, also can increase fastener 5 in other positions of heating tube 1 as required.

In actual assembling process, heating tube 1 set up in fan 3 below be close to the position of hugging closely fan 3, realize reducing whole heating structure's height, guarantee efficient heating efficiency simultaneously.

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, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless expressly specified otherwise.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; 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 meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.

Claims (10)

1. A heating structure of an air fryer, the air fryer comprising a machine body and a cooking cavity (4) arranged inside the machine body, characterized in that the heating structure of the air fryer comprises:

the heating tube (1) is arranged in the cooking cavity (4), and at least part of the heating tube (1) is spirally arranged;

the fan (3) is arranged corresponding to the heating tube (1) and is matched with the heating tube (1) to generate hot air flow so as to form hot air flow circulation in the cooking cavity (4),

the distance H between two adjacent circles of the spiral part of the heating tube (1) is less than or equal to 10mm and less than or equal to 16mm.

2. The heating structure of an air fryer according to claim 1, wherein: two lead terminals (11) at the beginning and the end of the heating tube (1) are positioned at the edge of the heating tube (1), the heating tube (1) connected with the lead terminals (11) is spirally bent from outside to inside and is connected together internally, and the heating tubes connected with the two lead terminals (11) are arranged at intervals and are positioned on the same plane.

3. The heating structure of an air fryer according to claim 2, wherein: the lead terminal (11) is formed by bending the end part of the heating tube (1).

4. The heating structure of an air fryer according to claim 1, wherein: the distance H between two adjacent circles of the spiral part of the heating tube (1) is less than or equal to 11mm and less than or equal to 14mm.

5. The heating structure of an air fryer according to claim 1, wherein: the fan (3) and the heating tube (1) are arranged at the top of the cooking cavity (4), wherein the fan (3) is arranged above the heating tube (1), and the spiral part of the heating tube (1) and the projection of the fan (3) in the horizontal direction are at least partially overlapped.

6. The heating structure of an air fryer according to claim 5, wherein: the heating pipe (1) is arranged below the fan (3) and close to the fan (3).

7. The heating structure of an air fryer according to claim 1, wherein: culinary art chamber (4) in be provided with wind channel board (2), the inside of wind channel board (2) form interior concave cavity (6), heating tube (1) and fan (3) all be located this interior concave cavity (6).

8. The heating structure of an air fryer according to claim 7, wherein: the inner concave cavity (6) comprises a first inner concave cavity (62) and a second inner concave cavity (61) arranged at the top of the first inner concave cavity (62), the fan (3) is positioned in the second inner concave cavity (61), the heating tube (1) is positioned in the first inner concave cavity (62), and the area of the first inner concave cavity (62) is larger than that of the second inner concave cavity (61).

9. The heating structure of an air fryer according to claim 7, wherein: the shape of the bent heating tube (1) is matched with the inner shape of the first inner concave cavity (62).

10. The heating structure of an air fryer according to claim 6, wherein: lead terminal (11) of heating tube (1) install and fix on wind channel board (2) to be connected to on the circuit board of air fryer, heating tube (1) on keep away from one side of lead terminal (11) and fix on wind channel board (2) through at least one fastener (5).

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