CN215191047U

CN215191047U - Hidden air heater

Info

Publication number: CN215191047U
Application number: CN202121138730.XU
Authority: CN
Inventors: 吴津宁; 杨广良; 万景峰; 何田田
Original assignee: Guangdong Enaiter Electrical Appliances Co Ltd
Current assignee: Guangdong Enaiter Electrical Appliances Co Ltd
Priority date: 2021-05-25
Filing date: 2021-05-25
Publication date: 2021-12-17
Anticipated expiration: 2031-05-25

Abstract

The utility model discloses a hidden air heater, it includes: the inner side of the shell component is provided with a cavity which is communicated up and down, the interior of the shell component is provided with an accelerating cavity which is arranged around the cavity, the outer side of the shell component is provided with a fixing groove, the inner side and/or the bottom of the shell component is provided with an air outlet, the accelerating cavity is respectively communicated with the air outlet and the fixing groove, and the width of the air outlet is smaller than that of the accelerating cavity; the fan is inserted into the fixed groove; and the heating member is arranged in the accelerating cavity and is arranged around the cavity. Through the structure, air can flow into the accelerating cavity and fully contact with the heating element by stirring the air through the fan, the heat of the hot air is uniformly distributed, and the hot air flows out through the air outlet with smaller width, so that the heater can output larger air speed, the air outlet is stable, the heat uniformity is good, and the hot air can fully flow to the bottom of the cooking cavity so as to uniformly heat food; the oil smoke can not be stained on the fan blades and the heating elements of the fan, and the cleanness of the fan blades and the heating elements can be kept.

Description

Hidden air heater

Technical Field

The utility model relates to a cooking equipment technical field, in particular to air heater.

Background

In the air fryer, hot air is required to flow during cooking so as to heat food uniformly, and in most air fryers, a fan is used as a heater to balance the hot air. Generally, the electric heating element and the fan blade of the fan are arranged in a cooking cavity for accommodating the food material pot, the motor, the fan blade and the electric heating element of the fan are arranged up and down, the electric heating element heats air, and the fan blade rotates to stir the air to flow downwards. With this structure, there are the following problems: the height and the volume of the heater are large; the fan blades directly stir the air near the electric heating piece, the air is not fully contacted with the electric heating piece, and the flow speed and the air volume of the stirred air are unstable, so that the hot air is not uniformly distributed, the hot air is difficult to flow to the bottom of the cooking cavity, and the food is heated unevenly; flabellum and heating member direct exposure can be stained with the oil smoke when toasting food in the air of culinary art intracavity, and because the factor of blockking of heating member, the flabellum is not convenient for dismantle cleanly. In addition, when the air fryer is assembled, all parts of the heater need to be assembled to the machine body of the air fryer one by one, so that the assembly steps of the air fryer are complicated, and the assembly efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a hidden air heater, can avoid the flabellum of heating member and fan to be infected with the oil smoke, keep clean.

To achieve the above object, there is provided a concealed air heater including: the inner side of the shell component is provided with a cavity which is communicated up and down, the interior of the shell component is provided with an accelerating cavity which is arranged around the cavity, the outer side of the shell component is provided with a fixing groove, the inner side and/or the bottom of the shell component is provided with an air outlet, the accelerating cavity is respectively communicated with the air outlet and the fixing groove, and the width of the air outlet is smaller than that of the accelerating cavity; the fan is inserted into the fixing groove; and the heating element is arranged in the accelerating cavity and is arranged around the cavity.

According to some embodiments, the shell assembly includes an inner shell and an outer shell, the inner shell is disposed inside the outer shell and encloses the air outlet and the acceleration chamber with the outer shell, and the fixing groove is disposed on the outer shell.

According to some embodiments, the outer side of the inner shell and the inner side of the outer shell are both provided with mounting grooves, the mounting grooves on the inner shell and the mounting grooves on the outer shell are oppositely arranged, and the heating element is arranged in the mounting grooves on the inner shell and the mounting grooves on the outer shell.

According to some embodiments, the air outlet communicates with the top of the acceleration chamber, and a flow guide portion extending toward the sidewall of the outer shell is disposed at the top of the inner shell between the acceleration chamber and the air outlet.

According to some embodiments, the acceleration chamber is wide at the top and narrow at the bottom.

According to some embodiments, the inner cavity of the fixation slot is tangential to the acceleration cavity.

According to some embodiments, the width of the air outlet is W, and W is more than or equal to 0.8 and less than or equal to 1.6 mm.

According to some embodiments, the outlet is arranged in a ring shape.

According to some embodiments, the air outlet faces obliquely downwards, an included angle between the orientation of the air outlet and an axis of the cavity is beta, and beta is greater than or equal to 10 degrees and less than or equal to 20 degrees.

According to some embodiments, the shell assembly comprises an inner shell and an outer shell, the inner shell is arranged on the inner side of the outer shell and encloses the acceleration cavity with the outer shell, the fixing groove is arranged on the outer shell, and the air outlet is formed in the bottom of the inner shell.

Has the advantages that: through the structure, air can flow into the accelerating cavity and fully contact with the heating element by stirring the air through the fan, the heat of the hot air is uniformly distributed, and the hot air flows out through the air outlet with smaller width, so that the heater can output larger air speed, the air outlet is stable, the heat uniformity is good, and the hot air can fully flow to the bottom of the cooking cavity so as to uniformly heat food; the oil smoke can not be stained on the fan blades and the heating elements of the fan, and the cleanness of the fan blades and the heating elements can be kept.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The present invention will be further described with reference to the accompanying drawings and examples;

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

FIG. 2 is a top view of the recessed air heater shown in FIG. 1;

FIG. 3 is a cross-sectional view of the recessed air heater shown in FIG. 1;

fig. 4 is an exploded view of the recessed air heater shown in fig. 1.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the terms greater than, less than, exceeding, etc. are understood to exclude the number, and the terms above, below, inside, etc. are understood to include the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 to 4, a hidden air heater includes a housing assembly 10, a blower 20 and a heating element 30, wherein the housing assembly 10 has an air outlet 41 and a cavity 42 penetrating up and down on the inner side, an acceleration chamber 43 disposed around the cavity 42 on the inner side, a fixing groove 44 on the outer side, the acceleration chamber 43 is respectively communicated with the air outlet 41 and the fixing groove 44, the width of the air outlet 41 is smaller than the width of the acceleration chamber 43, the blower 20 is inserted into the fixing groove 44, and the heating element 30 is disposed in the acceleration chamber 43 and surrounds the cavity 42. Wherein, the heating member 30 can be a heating wire or an electric heating tube.

In operation, the fan 20 feeds outside air into the acceleration chamber 43, the heating member 30 heats the fed air, hot air is blown out from the outlet 41 at high speed, and the blown hot air flows down to the cooking chamber. The fan 20 stirs air, so that the air flows into the accelerating cavity 43 and fully contacts with the heating element 30, the heat of the hot air is uniformly distributed, and the hot air flows out from the air outlet 41 with smaller width, so that the heater can output larger air quantity and wind speed, the air outlet is stable, the heat uniformity is good, and the hot air can fully flow to the bottom of the cooking cavity, so that the food is uniformly heated; the oil smoke can not be stained on the fan blades of the fan 20 and the heating element 30, and the fan blades and the heating element 30 can be kept clean. The housing assembly 10 may be laterally arranged to reduce the overall height of the heater, which may be compact and facilitate compact design of the product. In addition, the heater can be assembled to the air fryer as a unitary component, reducing the number of assembly steps for the air fryer and improving assembly efficiency.

Specifically, the casing assembly 10 includes an inner casing 11 and an outer casing 12, the inner casing 11 is disposed inside the outer casing 12 and encloses the air outlet 41 and the acceleration chamber 43 with the outer casing 12, and the fixing groove 44 is disposed on the outer casing 12. Wherein, the bottom of the inner housing 11 is provided with a clamping groove, and the bottom of the outer housing 12 is provided with a clamping part 121 inserted into the clamping groove, so as to align and position the inner housing 11 and the outer housing 12.

Further, both the outside of the inner case 11 and the inside of the outer case 12 are provided with mounting grooves 13, the mounting grooves 13 on the inner case 11 and the mounting grooves 13 on the outer case 12 are oppositely arranged, and the heating member 30 is disposed in the mounting grooves 13 on the inner case 11 and the mounting grooves 13 on the outer case 12. The heating member 30 is interposed between the inner housing 11 and the outer housing 12 for easy assembly and positioning.

A temperature sensor 50 is provided on the outer case 12 to detect the air temperature in the acceleration chamber 43. Specifically, the outer housing 12 is provided with a first mounting hole 122 and a second mounting hole 123, the probe of the temperature sensor 50 is inserted into the first mounting hole 122, and the second mounting hole 123 is provided with a first fastener or an adhesive to position the temperature sensor 50.

A fixing table 124 is provided on the outside of the outer casing 12, and a second fastening member is inserted into the fixing table 124, so that the heater can be fixedly connected to the air fryer through the second fastening member.

The inner cavity of the fixing groove 44 is tangent to the accelerating cavity 43, so that the air in the accelerating cavity 43 can be blown in, the air flow resistance is reduced, the air can flow in the accelerating cavity 43 sufficiently, and the situation that a part of the accelerating cavity 43 cannot have flowing air is avoided.

The air outlet 41 is annular, so that the heater can exhaust air annularly, and the heat distribution uniformity in the cooking cavity is improved. The air outlet 41 faces obliquely downwards, an included angle between the orientation of the air outlet 41 and the axis of the cavity 42 is beta, beta is more than or equal to 10 degrees and less than or equal to 20 degrees, and for example, beta can be set to 10 degrees, 12 degrees, 13 degrees, 17 degrees or 20 degrees. This structure allows the hot air to have a large flow surface when flowing downward, so that a large area of the food can contact the hot air flowing downward.

The air outlet 41 is connected to the top of the accelerating cavity 43, and a flow guiding portion 111 extending to the side wall of the outer housing 12 is disposed on the top of the inner housing 11 between the accelerating cavity 43 and the air outlet 41. The hot air in the accelerating cavity 43 can reach the air outlet 41 only by bypassing the flow guiding part 111, so that the air can flow fully in the accelerating cavity 43 and contact the heating element 30, the flowing time of the air in the accelerating cavity 43 is increased, the air is heated uniformly and fully absorbs heat, and the phenomenon that the air flows upwards directly and flows out of the air outlet 41 to cause the air to be heated uniformly and cause the air to flow in the accelerating cavity 43 fully is avoided.

The accelerating cavity 43 is wide at the top and narrow at the bottom to facilitate the air to diffuse upward in the accelerating cavity 43. The width of the air outlet 41 is W, W is more than or equal to 0.8 and less than or equal to 1.6mm, for example, W can be set to be 0.8mm, 1mm, 1.2mm, 1.4mm or 1.6 mm. The air outlet 41 of this width allows the air to flow out at a suitable flow rate, so that the air flow can be properly diffused in the cooking cavity and can flow to the bottom of the cooking cavity.

In some embodiments, the air outlet 41 may be disposed at the bottom of the casing assembly 10, for example, the casing assembly 10 includes an inner casing 11 and an outer casing 12, the inner casing 11 is disposed inside the outer casing 12 and forms an acceleration chamber 43 with the outer casing 12, the fixing groove 44 is disposed at the outer casing 12, the air outlet 41 is disposed at the bottom of the inner casing 11, and the air outlet 41 faces directly below or obliquely below. Or the air outlet 41 is provided at the inner side or the bottom of the housing assembly 10.

In some embodiments, the housing assembly 10 includes a main housing having an accommodating cavity with an opening facing upward and the air outlet 41, and a top cover mounted at the top opening of the accommodating cavity, wherein the bottom surface of the top cover and the inner wall of the accommodating cavity enclose the acceleration cavity 43.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A recessed air heater, comprising:

the inner side of the shell component is provided with a cavity which is communicated up and down, the interior of the shell component is provided with an accelerating cavity which is arranged around the cavity, the outer side of the shell component is provided with a fixing groove, the inner side and/or the bottom of the shell component is provided with an air outlet, the accelerating cavity is respectively communicated with the air outlet and the fixing groove, and the width of the air outlet is smaller than that of the accelerating cavity;

the fan is inserted into the fixing groove;

and the heating element is arranged in the accelerating cavity and is arranged around the cavity.

2. The hidden air heater as claimed in claim 1, wherein the housing assembly includes an inner housing and an outer housing, the inner housing is disposed inside the outer housing and surrounds the air outlet and the acceleration chamber, and the fixing groove is disposed on the outer housing.

3. The hidden air heater as claimed in claim 2, wherein the outer side of the inner casing and the inner side of the outer casing are provided with mounting slots, the mounting slots on the inner casing and the mounting slots on the outer casing are oppositely disposed, and the heating elements are disposed in the mounting slots on the inner casing and the mounting slots on the outer casing.

4. The air heater as claimed in claim 2, wherein the air outlet is connected to the top of the accelerating cavity, and the top of the inner housing is provided with a flow guiding portion extending toward the sidewall of the outer housing between the accelerating cavity and the air outlet.

5. A concealed air heater according to any one of claims 1 to 4, wherein said acceleration chamber is wide at the top and narrow at the bottom.

6. The hidden air heater as claimed in any of claims 1 to 4, wherein the fixing groove has an inner cavity tangential to the accelerating cavity.

7. The hidden air heater as claimed in any one of claims 1 to 4, wherein the width of the air outlet is W, W is 0.8-1.6 mm.

8. The air heater as claimed in any one of claims 1 to 4, wherein the air outlet is configured in a ring shape.

9. The air heater as claimed in claim 8, wherein the air outlet is oriented obliquely downward, and the angle between the air outlet and the axis of the cavity is β, β is greater than or equal to 10 ° and less than or equal to 20 °.

10. The hidden air heater as claimed in claim 1, wherein the housing assembly includes an inner housing and an outer housing, the inner housing is disposed inside the outer housing and encloses the acceleration chamber with the outer housing, the fixing groove is disposed on the outer housing, and the air outlet is disposed at the bottom of the inner housing.