CN214048569U - Cooking utensil - Google Patents

Abstract

The utility model provides a cooking utensil, include: a pot body assembly having an air duct; the heating component is arranged on the cooker body component and is positioned at the air outlet of the air channel; the centrifugal fan is arranged in the air duct and comprises a volute, a volute tongue and fan blades arranged in the volute, the axis of each fan blade is located between the volute tongue and the axis of the volute, and a first distance Y is formed between the axis of each fan blade and the axis of the volute along the horizontal direction. The technical scheme of this application has solved effectively that the air is fried the pot and is less at the in-use wind pressure among the correlation technique, influences the problem of culinary art effect.

Description

Cooking utensil

Technical Field

The utility model relates to a small household electrical appliances technical field particularly, relates to a cooking utensil.

Background

In the related art, a side inlet air fryer includes a fan and a heating assembly. The fan adopts an axial flow fan or a centrifugal fan, air enters the air channel from the air inlet cover under the action of the fan and passes through the heating component, and the air enters the pot after being heated, so that the food is heated.

For the air fryer adopting the centrifugal fan, the air pressure is small in the using process, and the cooking effect is influenced.

SUMMERY OF THE UTILITY MODEL

The main object of the utility model is to provide a cooking utensil to solve among the correlation technique air fryer wind pressure less in the use, influence the problem of culinary art effect.

In order to achieve the above object, the present invention provides a cooking appliance, comprising: a pot body assembly having an air duct; the heating component is arranged on the cooker body component and is positioned at the air outlet of the air channel; the centrifugal fan is arranged in the air duct and comprises a volute, a volute tongue and fan blades arranged in the volute, the axis of each fan blade is located between the volute tongue and the axis of the volute, and a first distance Y is formed between the axis of each fan blade and the axis of the volute along the horizontal direction.

Use the technical scheme of the utility model, the axis of fan blade and the axis of spiral case set up along the horizontal direction interval to the fan blade is close to the setting of spiral tongue, makes the wind channel that is close to between the spiral case of spiral tongue one side and the fan blade narrow, and wind receives the extrusion when the wind channel that narrows down, makes the wind pressure increase of the wind that blows off from the spiral case. Above-mentioned structure can effectively solve the air and explode the pot less in the use wind pressure, influences the problem of culinary art effect. Meanwhile, the fan blade can drive more wind to enter the part of the heating component close to the volute tongue, so that the temperature of the heating component is uniform, the part of the heating component close to the volute tongue can not generate local high temperature any more, and the problem of fan blade melting caused by uneven wind inlet and local high temperature can be effectively avoided.

Further, the first distance Y and the diameter d of the fan blade satisfy the following condition: y is 4% d-8% d. The first distance Y ensures the air outlet pressure on one hand, so that wind can blow food better, and ensures the uniform air outlet on the other hand, so that air can enter the heating component more uniformly under the guiding action of the fan blades and the volute.

Further, the axis of the fan blade and the axis of the volute casing have a second distance X along the vertical direction. The second distance X enables the fan blade to be far away from the heating component in the vertical direction, and the situation that the heating component melts the fan blade at high temperature due to the fact that the fan blade is close to the heating component is avoided. Meanwhile, the second distance X enables the air channel between the volute close to one side of the volute tongue and the fan blade to be narrowed, and air is extruded when passing through the narrowed air channel, so that air outlet pressure can be guaranteed.

Further, the second distance X and the diameter d of the fan blade satisfy: x is 4% d-8% d. The second distance X enables the fan blade to be far away from the heating component in the vertical direction, and the situation that the heating component melts the fan blade at high temperature due to the fact that the fan blade is close to the heating component is avoided. Above-mentioned second distance X can compromise air-out pressure and air-out homogeneity.

Further, the diameter of the fan blade is d, the maximum distance W between the inner surface of the volute and the fan blade in a preset horizontal plane is in the range of 8% d to 12% d, and the preset horizontal plane is a horizontal plane passing through the axis of the fan blade. The maximum distance between the inner surface of the volute and the fan blade in the preset horizontal plane enables air to uniformly enter the heating assembly under the guiding action of the fan blade and the volute.

Further, the diameter of the fan blade is d, the minimum distance Z between the inner surface of the volute and the fan blade in a preset horizontal plane is in the range of 2% d to 4% d, and the preset horizontal plane is a horizontal plane passing through the axis of the fan blade. The minimum distance between the inner surface of the volute and the fan blade in the preset horizontal plane enables air entering the air channel to be extruded, air pressure is increased, meanwhile, the movement distance of the air in the volute is shortened, and the on-way air pressure loss is reduced.

Further, the heating component comprises a heating wire, and the distance H between the fan blade and the heating wire is in the range of 12.7mm to 16 mm. The distance between the fan blade and the heating wire ensures that the heating wire cannot melt the fan blade in a high-power working state.

Further, the cross section of the volute comprises a first arc line section and a second arc line section, the diameter of the first arc line section is larger than that of the second arc line section, and the distance between the first arc line section and the fan blade is larger than or equal to the distance between the second arc line section and the fan blade. Be provided with first arc segment and second arc segment in the cross-section of above-mentioned spiral case, can compromise air-out pressure and air-out homogeneity.

Furthermore, the centrifugal fan also comprises a motor and an air inlet cover, the motor is arranged on the volute and is in driving connection with the fan blades, the air inlet cover is arranged on the volute and is provided with an air inlet, and the fan blades are positioned in a space enclosed by the volute and the air inlet cover. The motor drives the fan blades to rotate at a high speed, so that air entering from the air inlet is accelerated and enters the air duct, and then enters the heating assembly through compression of the air duct.

Furthermore, the heating component comprises a metal shell, a heating wire and a temperature sensor, the heating wire is positioned in the metal shell, and the temperature sensing end of the temperature sensor is in contact fit with the metal shell. The temperature sensor can monitor the temperature of the metal shell in real time, so that the temperature of the heating wire is monitored, the heating wire is prevented from being blown, and the service life of the cooking utensil is prolonged.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic perspective view of an embodiment of a cooking appliance according to the present invention;

FIG. 2 shows a cross-sectional schematic view of the cooking appliance of FIG. 1;

FIG. 3 shows an exploded view of the cooking appliance of FIG. 1;

FIG. 4 illustrates a perspective view of the centrifugal fan and heat generating components of the cooking appliance of FIG. 1;

FIG. 5 shows a schematic perspective view of another angle of the centrifugal fan and heat generating assembly of FIG. 4;

FIG. 6 shows an exploded schematic view of the centrifugal fan of FIG. 4;

FIG. 7 shows a perspective view of the centrifugal fan of FIG. 6;

FIG. 8 shows a schematic front view of the centrifugal fan and heat generating assembly of FIG. 4;

FIG. 9 shows a schematic cross-sectional view of the centrifugal fan of FIG. 4; and

FIG. 10 shows a schematic cross-sectional view of the centrifugal fan and heat generating assembly of FIG. 4.

Wherein the figures include the following reference numerals:

10. a pot body assembly; 20. a heat generating component; 21. a temperature sensor; 22. a heater; 23. a metal housing; 30. a centrifugal fan; 31. a volute; 311. a first arc segment; 312. a second arc segment; 32. a fan blade; 33. a motor; 34. an air inlet cover; 341. an air inlet; 35. a volute tongue; 40. an upper cover; s1, horizontal direction; s2, vertical direction; s, presetting a horizontal plane; y, a first distance; x, a second distance; o, the axis of the fan blade; p, the axis of the volute; d. the diameter of the fan blade.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 1 to 3 and fig. 7 and 8, the cooking appliance of the present embodiment includes: a pot body assembly 10, an upper cover 40, a heating assembly 20 and a centrifugal fan 30. The pot body assembly 10 has an air duct, and the upper cover 40 is disposed over the pot body assembly 10. The heating element 20 is disposed at the cooker body 10 and located at the air outlet of the air duct. The centrifugal fan 30 is disposed in the air duct, the centrifugal fan 30 includes a volute 31, a volute tongue 35 and a fan blade 32 disposed in the volute 31, an axis O of the fan blade 32 is located between the volute tongue 35 and an axis P of the volute 31, and the axis O of the fan blade 32 and the axis P of the volute 31 have a first distance Y along a horizontal direction S1.

As shown in fig. 8, the axis O of the fan blade 32 is located at the lower left of the axis P of the scroll casing 31, the axis O of the fan blade 32 is perpendicular to the paper, and the axis O of the fan blade 32 passes through the intersection of the vertical chain line located at the left side in the drawing and the horizontal chain line located at the lower side.

Use the technical scheme of the utility model, the axis O of fan blade 32 and the axis P of spiral case 31 set up along horizontal direction S1 interval to fan blade 32 is close to spiral tongue 35 and sets up, makes the wind channel between spiral case 31 and the fan blade 32 that is close to spiral tongue 35 one side narrow down, and wind receives the extrusion when the wind channel that narrows down, and the wind pressure increase has effectively solved the air and has fried the pot wind pressure less in the use, influences the problem of culinary art effect. Meanwhile, the fan blade 32 can drive more wind to enter the part of the heating component 20 close to the volute tongue 35 due to the arrangement, so that the temperature of the heating component 20 is uniform, and the part of the heating component 20 close to the volute tongue 35 does not have local high temperature. Therefore, the problem of the melting fan blade 32 caused by uneven air inlet and local high temperature can be effectively avoided.

As shown in fig. 2 and 3, the cooker body assembly 10 includes a base body and an inner pot, the base body includes a base and a side portion disposed at one side of the base, the air duct is located in the side portion, and the heating element 20 is located at the top of the side portion. And the side surface of the side part facing the inner pot is provided with an overflowing opening which is communicated with the air channel and used for sending outside air into the air channel. The air outlet direction of the heating component 20 faces the inner side of the upper cover 40, and a flow guide structure is arranged on the inner surface of the upper cover 40 to better guide the air into the inner pot.

In the present embodiment, as shown in fig. 8, the centrifugal fan 30 rotates in the counterclockwise direction, and the axis O of the fan blade 32 of the centrifugal fan 30 extends in the horizontal direction S1. In the horizontal direction S1, the axis O of the fan blade 32 is offset to the left (toward the volute tongue 35) from the axis P of the volute 31 by a first distance Y, where the first distance Y and the diameter d of the fan blade 32 satisfy: y is 4% d-8% d. Y can take the value 4% d, 6% d or 8% d. The value range ensures the air outlet pressure on one hand, so that the wind can be blown to food better, and the cooking effect is improved. On the other hand, the uniform air outlet is ensured, so that the air can uniformly and fully enter the whole heating component 20, and the problem that the air inlet amount of the left space of the heating component 20 is small and the part of the heating component 20 close to the volute tongue 35 has local high temperature in the related technology is effectively solved. It should be noted that, when the value of Y is less than 4% d, the increase of wind pressure is not obvious, is unfavorable for the promotion of culinary art effect, and simultaneously, when the value of Y is greater than 8% d, the wind pressure is too big, the too big condition of noise probably can appear, can influence the homogeneity of air-out simultaneously.

In an embodiment not shown in the figures, the centrifugal fan may also be rotated in a clockwise direction, and accordingly, in the horizontal direction, the axis of the fan blade is offset to the right by a first distance from the axis of the volute. The technical effect of the above structure is similar to that of the present embodiment, and is not described herein again.

In the present embodiment, as shown in fig. 8, the axis O of the fan blade 32 and the axis P of the volute 31 have the second distance X in the vertical direction S2. The second distance X enables the fan blade 32 to be far away from the heating assembly 20 in the vertical direction S2, so as to avoid the occurrence of the situation that the fan blade 32 is melted by the heating assembly 20 at a high temperature due to the too close distance between the fan blade 32 and the heating assembly 20. Meanwhile, the air duct between the volute 31 and the fan blade 32 close to one side of the volute tongue 35 is narrowed, and air is extruded when passing through the narrowed air duct, so that the air outlet pressure can be ensured.

Preferably, the second distance X and the diameter d of the fan blade 32 satisfy: x is 4% d-8% d. X can take the value 4% d, 6% d or 8% d. Above-mentioned second distance X can compromise air-out pressure and air-out homogeneity. It should be noted that, when the value of X is less than 4% d, the increase of wind pressure is not obvious, which is not beneficial to the improvement of cooking effect, and meanwhile, the blade 32 is too close to the heating component 20, which is easy to melt the blade. Simultaneously, when the value of X is greater than 8% d, the wind pressure is too big, probably can appear the too big condition of noise, can influence the homogeneity of air-out simultaneously.

In the present embodiment, as shown in fig. 7 and 8, the cross section of the volute 31 includes a first arc segment 311 and a second arc segment 312, the diameter of the first arc segment 311 is greater than that of the second arc segment 312, and the distance between the first arc segment 311 and the fan blade 32 is greater than or equal to the distance between the second arc segment 312 and the fan blade 32. As shown in fig. 7 and 8, the first arc segment 311 is a right side contour of the scroll casing 31, and the second arc segment 312 is a left side contour of the scroll casing 31. Smooth transition between first arc 311 and second arc 312, when the air current passed through the position, the resistance that receives was less, and the wind pressure loss is less, can compromise air-out pressure and air-out homogeneity.

In the present embodiment, as shown in fig. 8 and 9, the diameter of the fan blade 32 is d, the maximum distance W between the inner surface of the volute 31 and the fan blade 32 in the preset horizontal plane S is in the range from 8% d to 12% d, and W may be 8% d, 10% d, or 12% d. The minimum distance Z between the inner surface of the volute 31 and the fan blade 32 in the preset horizontal plane S is in the range of 2% d to 4% d, and the value of Z can be 2% d, 3% d or 4% d. The preset horizontal plane S is a horizontal plane passing through the axis O of the fan blade 32.

When the air flows through the fan blade 32, the moving direction is changed from the axial direction to the radial direction, and then the air respectively flows through the space between the fan blade 32 and the second arc-shaped line section 312 and the space between the fan blade 32 and the first arc-shaped line section 311, that is, the air flows through the air channel along the counterclockwise direction. When the air flows through the space between the fan blade 32 and the second arc segment 312, the air is squeezed and the air pressure is increased due to the narrowed air passage. The air channel is widened from narrow to wide, so that the movement distance of air flowing through the air channel is shortened, the on-way air pressure loss is reduced, and sufficient air pressure is ensured; meanwhile, the air outlet is wide, so that air can uniformly and fully enter the whole heating component 20, and the problem of small air inlet amount of the left space of the heating component 20 in the related technology is effectively solved.

When the minimum distance and the maximum distance are set, the volute 31 is taken as a reference, the axis O of the fan blade 32 is firstly deviated to the left by Y along the horizontal direction S1, and a value of 4% d-8% d (d is the diameter of the fan blade 32) is obtained, and meanwhile, the air channel of the left volute 31 is corrected by the profile of the fan blade 32, so that the distance between the fan blade 32 and the left side of the volute 31 is Z, and a value of 2% d-4% d is obtained, so that the distance between the fan blade 32 and the right side of the volute 31 is W, and a value of 8% d-12% d is obtained.

As can be seen by those skilled in the art, when only the maximum distance W between the inner surface of the volute 31 and the fan blade 32 in the preset horizontal plane S satisfies W-8% d-12% d, or when only the minimum distance Z between the inner surface of the volute 31 and the fan blade 32 in the preset horizontal plane S satisfies Z-2% d-4% d, the wind pressure can be increased and the uniformity of the outlet wind can be improved.

In the present embodiment, as shown in fig. 8, the heat generating component 20 includes the heating wire 22, and the distance H between the fan blade 32 and the heating wire 22 is in the range of 12.7mm to 16 mm. The certain distance between the fan blade 32 and the heating wire 22 is ensured, the fan blade 32 cannot be subjected to high-temperature melting due to the fact that the distance between the fan blade 32 and the heating component 20 is too close, the situation that the high-temperature melting of the fan blade 32 affects the use experience of a user of the air fryer is avoided, and the service lives of the centrifugal fan 30 and the air fryer are prolonged. The distance H can also ensure that the heater 22 does not melt the fan blades 32 in a high-power operating state.

In this embodiment, as shown in fig. 4, 5, 6, 9, and 10, the centrifugal fan 30 further includes a motor 33 and an air inlet cover 34, the heating wire 22 can be limited on the air inlet cover 34, the motor 33 is coaxial with the fan blade 32, the motor 33 is disposed on the scroll casing 31 and is in driving connection with the fan blade 32, the air inlet cover 34 is disposed on the scroll casing 31 and has an air inlet 341, and the fan blade 32 is located in a space surrounded by the scroll casing 31 and the air inlet cover 34. The shaft of the motor 33 passes through a corresponding hole arranged on the volute casing 31 to fix the motor 33 on the volute casing 31, the motor 33 drives the fan blade 32 to rotate at a high speed, so that air enters the volute casing 31 through the air inlet 341, the movement direction is changed from the axial direction to the radial direction, and the air enters the heating assembly 20 after being compressed through a part of air channels, so that cold air is changed into hot air. Of course, the opening shape of the air inlet cover 34 is not limited to the shape shown in fig. 4, and other opening shapes include: circular, square, polygonal, etc. are also within the scope of the present application.

In the present embodiment, as shown in fig. 7 and fig. 9, the heating element 20 includes a metal casing 23 (also called a metal frame), a heating wire 22 and a temperature sensor 21, the heating wire 22 is located in the metal casing 23 and is effectively limited by the metal casing 23, and the temperature sensing end of the temperature sensor 21 is located on the metal casing 23. The temperature sensor 21 can detect the temperature of the metal shell 23 in real time, and when the temperature of the metal shell 23 reaches a preset temperature, the temperature control switch connected with the temperature sensor 21 will cut off the heating circuit of the heating wire 22 quickly, so as to avoid the occurrence of the situation that the components in the pot are burned out due to over-high temperature. Preferably, in this embodiment, the temperature sensor 21 is a temperature-sensing NTC, and the temperature control switch is a kick type temperature control switch.

In this embodiment, the cooking appliance includes an air fryer or an electric rice cooker or an electric pressure cooker or a multifunctional heating pot with functions of baking, cooking and cooking.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A cooking appliance, comprising:

the cooker body assembly (10), wherein an air duct is arranged in the cooker body assembly (10);

the heating component (20) is arranged on the cooker body component (10) and is positioned at the air outlet of the air channel;

the centrifugal fan (30) is arranged in the air duct, the centrifugal fan (30) comprises a volute (31), a volute tongue (35) and a fan blade (32) arranged in the volute (31), the axis (O) of the fan blade (32) is located between the volute tongue (35) and the axis (P) of the volute (31), and the axis (O) of the fan blade (32) and the axis (P) of the volute (31) have a first distance Y along the horizontal direction (S1).

2. The cooking appliance according to claim 1, wherein the first distance Y and the diameter d of the fan blade (32) satisfy: y is 4% d-8% d.

3. The cooking appliance according to claim 1, wherein the axis (O) of the fan blade (32) and the axis (P) of the volute (31) have a second distance X in a vertical direction (S2).

4. The cooking appliance according to claim 3, wherein the second distance X and the diameter d of the fan blade (32) satisfy: x is 4% d-8% d.

5. The cooking appliance according to any one of claims 1 to 4, wherein the diameter of the fan blade (32) is d, the maximum distance W between the inner surface of the volute (31) and the fan blade (32) in a predetermined horizontal plane (S) passing through the axis (O) of the fan blade (32) being in the range between 8% d and 12% d.

6. The cooking appliance according to any one of claims 1 to 4, wherein the diameter of the fan blade (32) is d, the minimum spacing Z between the inner surface of the volute (31) and the fan blade (32) in a predetermined horizontal plane (S) which is a horizontal plane passing through the axis (O) of the fan blade (32) being in the range between 2% d and 4% d.

7. The cooking appliance according to claim 1, wherein the heat generating component (20) comprises a heat generating wire (22), and a distance H between the fan blade (32) and the heat generating wire (22) is in a range of 12.7mm to 16 mm.

8. The cooking appliance according to claim 1, wherein the cross section of the volute (31) comprises a first arc segment (311) and a second arc segment (312), the diameter of the first arc segment (311) is greater than the diameter of the second arc segment (312), and the distance between the first arc segment (311) and the fan blade (32) is greater than or equal to the distance between the second arc segment (312) and the fan blade (32).

9. The cooking appliance according to claim 1, wherein the centrifugal fan (30) further comprises a motor (33) and an air inlet cover (34), the motor (33) is disposed on the volute (31) and is in driving connection with the fan blade (32), the air inlet cover (34) is covered on the volute (31) and has an air inlet (341), and the fan blade (32) is located in a space enclosed by the volute (31) and the air inlet cover (34).

10. The cooking utensil of claim 1, wherein the heating assembly (20) comprises a metal shell (23), a heating wire (22) and a temperature sensor (21), the heating wire (22) is positioned in the metal shell (23), and a temperature sensing end of the temperature sensor (21) is in contact fit with the metal shell (23).

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