Heating device and air fryer thereof

Abstract

The utility model relates to a heating device and an air fryer thereof, and aims at solving the technical problems that when an existing similar heating pipe product serves as a bottom heating pipe of the air fryer, bottom heat supply is not uniform, and cleaning is difficult. The heating device is a bottom heating body, and the bottom heating body comprises a heating pipe and an aluminum piece. The key point is that a heating pipe of the bottom heating body is bent in a snakelike shape, an aluminum piece of the bottom heating body is integrally formed in a die-casting mode, and a top plane of the aluminum piece of the bottom heating body is packaged in a notch of a groove of a bottom metal lining in a machine body; gaps distributed at equal intervals are formed in the aluminum part wrapping positions of the heating pipes at the bottom of the aluminum part, and reinforcing ribs distributed at equal intervals are arranged at the bottom of the aluminum part between the snakelike bent heating pipes. The bottom heating body is arranged in a groove in a metal lining in a machine body of the air fryer, a lower through hole is formed in the bottom of an outer pot of the fryer assembly above the bottom heating body, and an electric heating pipe, a corresponding motor, a corresponding radial heat dissipation fan blade and a corresponding radial stirring fan blade are arranged on the top or the rear portion in the machine body.

Description

TECHNICAL FIELD

[0001] The utility model relates to an air fryer and a heating pipe thereof, and relates to a heating device and an air fryer thereof. BACKGROUND

[0002] The air fryer is a new type of household appliance for frying food by using high-speed air circulation technology. The food made by the air fryer can reduce 80% of oil compared with traditional electric fryers. The air fryer is easy to clean, safe and economical in daily use, and is favored by people. Some air fryers have heating structure at the bottom in addition to the top heating design. For example, the utility model name "air fryer bottom heating structure" is disclosed in the authorized announcement No. CN219742494U of the Chinese patent document, the authorized announcement date is September 26, 2023. However, the bottom heating structure of the above-mentioned product and similar products has the following problems: 1. The bottom heating is not uniform. Due to the particularity of the air fryer fluid channel, there is always a problem of insufficient bottom heating. Some relatively high-end air fryers will increase the heating pipe at the bottom. However, due to the structure of the heating pipe, the temperature near the heating pipe at the bottom will be high, and the temperature near the heating pipe will be low, resulting in uneven heating of the food material. 2. Difficult to clean. The bottom is not easy to clean after adding the heating pipe, and it is very difficult to clean the installation place of the heating pipe. SUMMARY

[0003] In order to overcome the above-mentioned shortcomings, the purpose of the utility model is to provide a heating device and an air fryer thereof in the field, which solves the technical problems of uneven bottom heating and difficult cleaning when the existing similar heating pipe products are used as air fryer bottom heating pipes. The purpose is achieved through the following technical solutions.

[0004] A heating device, which is a bottom heating body, comprises a heating pipe and an aluminum part. The structure design points of the bottom heating body are that the heating pipe is bent in a snake shape and the aluminum part of the bottom heating body is integrally die-cast, and the top plane of the aluminum part of the bottom heating body is packaged in the groove of the bottom metal lining of the machine body. The heating device is integrally die-cast by the heating pipe and the aluminum part, the aluminum part makes the heat generated by the heating pipe uniform, and the flat aluminum plate is easier to clean. The use range of the heating device is not limited to the following air fryers.

[0005] The aluminum part of the aluminum part bottom heating pipe is provided with equidistantly distributed notches, and the aluminum part between the snake-shaped bent heating pipes is provided with equidistantly distributed reinforcing ribs. The notches of the aluminum part are to prevent the aluminum part from cracking due to thermal expansion and contraction, and the reinforcing ribs of the aluminum part are to prevent the aluminum part from deforming at high temperature.

[0006] An air fryer provided with the heating device, the structural design points of which are that an electric heating tube is arranged at the top or rear of the body of the air fryer, and a corresponding motor, radial heat dissipation fan blade and radial stirring fan blade are arranged, the radial heat dissipation fan blade and the radial stirring fan blade are connected with the motor shaft at the same time, the inner side of the opening of one side of the body is provided with a metal heat insulation lining, the air fryer assembly is arranged in the body through the opening of the body and the metal heat insulation lining, and the metal heat insulation lining below or in front of the electric heating tube and the radial stirring fan blade is provided with a wind hole; when the electric heating tube, the motor, the radial heat dissipation fan blade and the radial stirring fan blade are arranged at the rear of the body, a wind guide channel is arranged at the top of the body, and the outer pot of the air fryer assembly at one side of the rear of the body is provided with rear through holes which are distributed at equal intervals; the bottom of the outer pot of the air fryer assembly is provided with a lower through hole, and a bottom heating body is arranged in the groove of the metal lining below the lower through hole; the heating pipe of the bottom heating body, the electric heating tube motor and the motor are connected with the PCB circuit board in the body through lines, and the PCB circuit board is connected with the control panel on one side of the body through lines.

[0007] The electric heating tube is in the form of a ring and is arranged at the outside or front of the radial stirring fan blade in the heat insulation cover.

[0008] The radial heat dissipation fan blade is arranged in the wind guide cover at the top or rear of the heat insulation cover.

[0009] One end of the NTC temperature sensor is provided with a detection head which is inserted into the heat insulation cover, and the NTC temperature sensor is connected with the PCB circuit board in the body through lines, so that the temperature of the cavity center point is mapped through the temperature of the NTC temperature sensor, and the temperature of the cavity center point is accurately controlled.

[0010] The metal heat insulation lining above the pot body of the air fryer assembly is upwardly protruding and curved to the opening side at the same time, the metal heat insulation lining above the pot body of the air fryer assembly is communicated with the cavity at the setting position of the radial stirring fan blade, and the metal heat insulation lining above the pot body of the air fryer assembly is provided with a flow guide plate at the communicated position.

[0011] The radial heat dissipation fan blade and the radial stirring fan blade are respectively parallel and obliquely arranged at an included angle with the vertical horizontal plane and inclined to the opening side.

[0012] The air fryer has the advantages of reasonable structure design, convenient production and assembly, wide application range, uniform bottom heating, cleaning and simplicity, and is suitable for being used as a heating device and an air fryer and for structural improvement of similar products. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a bottom structure schematic view in the use state of an embodiment of the air fryer, and the base of the air fryer is omitted in the figure.

[0014] Figure 2 is Figure 1The diagram shows the air fryer components in the removed state, with the base of the air fryer added to the diagram.

[0015] Figure 3 yes Figure 2 A cross-sectional structural diagram.

[0016] Figure 4 yes Figure 3 A schematic diagram of the fryer components in the inserted state.

[0017] Attached figures and their names: 1. Fryer assembly, 2. Body, 3. Aluminum parts, 4. Heating tube, 401. Notch, 402. Reinforcing rib, 5. Base, 6. Motor, 7. Radial cooling fan, 8. Radial stirring fan, 9. Electric heating tube, 10. NTC temperature sensor, 11. Heat insulation cover, 12. Air guide cover. Implementation

[0018] The structure and use of this utility model will now be further described with reference to the accompanying drawings. Figures 1-4 As shown, the air fryer body 2 has a heating element 9 at the top or rear, and a corresponding motor 6, radial cooling fan 7, and radial stirring fan 8. The radial cooling fan and radial stirring fan are connected to the motor shaft. A metal heat-insulating liner is provided on the inner side of the opening on one side of the body. The fryer assembly 1 is installed in the body through the opening of the body and the metal heat-insulating liner. The metal heat-insulating liner in front of the heating element and the radial stirring fan has air holes. An air guide channel is provided at the top of the body. The outer pot of the fryer assembly on the rear side of the body has equidistantly distributed rear through holes. The bottom of the outer pot of the fryer assembly has a lower through hole. A bottom heating element is provided in the groove of the metal liner below the lower through hole. The heating element 4 of the bottom heating element is serpentine and the aluminum part 3 of the bottom heating element is integrally die-cast. The top plane of the aluminum part of the bottom heating element is encapsulated in the groove of the bottom metal liner of the body. The heating element, the heating element motor, and the bottom heating element are connected to the PCB circuit board in the body through wiring. The PCB circuit board is connected to the control panel on one side of the body through wiring.

[0019] The aforementioned heating element is circular and positioned inside the heat insulation cover 11, outside or in front of the radial stirring fan. The radial cooling fan is positioned inside the air guide shroud 12 at the rear of the heat insulation cover. An NTC temperature sensor 10 is located on one side of the heat insulation cover, with one end of the sensor's probe extending into the cover. The NTC temperature sensor is connected to the PCB circuit board inside the unit via a wiring connection. The metal heat-insulating liner above the pot of the fryer assembly bulges upward and bends towards the opening. Simultaneously, the metal heat-insulating liner above the pot of the fryer assembly communicates with the cavity where the radial stirring fan is located. A guide plate is provided at the point of communication on the metal heat-insulating liner above the pot of the fryer assembly. The radial cooling fan and the radial stirring fan are parallel and angled towards the opening side of the vertical horizontal plane.

[0020] The aluminum part wrapping part of the bottom heating pipe of the aluminum part is provided with equidistantly distributed notches 401, and the aluminum part bottom between the serpentine curved heating pipes is provided with equidistantly distributed reinforcing ribs 402.

[0021] According to the above structural features, the heating device can be arranged in an air fryer with top blowing, and can also be arranged in the bottom of a side chamber of a left-right double-cavity or up-down double-cavity machine body. Since the top plane of the aluminum part of the bottom heating body is packaged in the groove of the inner bottom metal lining of the machine body, cleaning is more convenient. Since the heating pipe of the bottom heating body is serpentine curved and the aluminum part of the bottom heating body is integrally die-cast, the heating is more uniform.

Claims

1. A heating device, which is a bottom heating body, said bottom heating body comprising a heating tube (4) and an aluminum piece (3); characterized in that The heating pipe (4) of the bottom heating body is serpentine bent and integrally pressure cast with the aluminum part (3) of the bottom heating body, and the aluminum part is packed in the groove of the bottom metal lining of the body (2) at the top plane.

2. The heating device according to claim 1, characterized in that The aluminum part (3) is provided with equidistantly distributed notches (401) at the aluminum part wrapping of the bottom heating pipe (4), and the aluminum part bottom between the serpentine bent heating pipes is provided with equidistantly distributed reinforcing ribs (402).

3. An air fryer provided with the heating device, characterized in that The body (2) of the air fryer is provided with an electric heating pipe (9) at the top or rear part, and corresponding motor (6), radial heat dissipation fan blade (7) and radial stirring fan blade (8), the radial heat dissipation fan blade and the radial stirring fan blade are connected with the motor shaft of the motor at the same time, the inner side of the opening of one side of the body is provided with a metal heat insulation lining, the fryer assembly (1) is arranged in the body through the opening of the body and the metal heat insulation lining, and the metal heat insulation lining below or in front of the electric heating pipe and the radial stirring fan blade is provided with a wind hole; when the electric heating pipe, the motor, the radial heat dissipation fan blade and the radial stirring fan blade are arranged at the rear part of the body, a wind guide channel is arranged at the top of the body, and the outer pot of the fryer assembly at one side of the rear part of the body is provided with equidistantly distributed rear through holes; the outer pot bottom of the fryer assembly is provided with a lower through hole, and a bottom heating body is arranged in the groove of the metal lining below the lower through hole; the heating pipe (4) of the bottom heating body, and the motor of the electric heating pipe are connected with the PCB circuit board in the body through a line, and the PCB circuit board is connected with the control panel of one side of the body through a line.

4. The air fryer according to claim 3, characterized in that The electric heating pipe (9) is in the form of a ring and is arranged outside or in front of the radial stirring fan blade (8) in the heat insulation cover (11).

5. The air fryer according to claim 4, characterized in that The radial heat dissipation fan blade (7) is arranged in the wind guide cover (12) at the top or rear part of the heat insulation cover (11).

6. The air fryer of claim 5, wherein One end of the NTC temperature sensor (10) is arranged at one side of the heat insulation cover (11) and extends into the heat insulation cover, and the NTC temperature sensor is connected with the PCB circuit board in the body (2) through a line.

7. The air fryer of claim 3, wherein The metal heat insulation lining above the pot body of the fryer assembly is protruded upward and curved to the opening side, and the metal heat insulation lining above the pot body of the fryer assembly is communicated with the cavity where the radial stirring fan blade (8) is arranged, and the metal heat insulation lining above the pot body of the fryer assembly is provided with a flow guide plate at the communicated part.

8. The air fryer of claim 3, wherein The radial heat dissipation fan blade (7) and the radial stirring fan blade (8) are respectively parallel and arranged at an angle inclined to the opening side with respect to the vertical horizontal plane.

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