CN218942979U - Improve cooking utensil of thermal-insulated effect of motor - Google Patents

Abstract

The utility model discloses a cooking utensil for improving heat insulation effect of a motor, which comprises a shell and a heat shield, wherein a heat insulation space is arranged between the shell and the heat shield, the motor is installed in the heat insulation space, a cooking cavity is arranged on the inner side of the heat shield, a heating pipe and a hot air fan are arranged in the cooking cavity, the motor is provided with a lower output shaft extending into the inner side of the cooking cavity, the lower output shaft is connected with the hot air fan, the motor is provided with an upper output shaft, the upper output shaft is connected with a cooling fan, a lower heat insulation cover and a heat insulation cavity shell are arranged above the heat shield, the lower heat insulation cover is connected with the lower side of the heat insulation cavity shell, a motor heat insulation cavity is formed among the lower heat insulation cover, the heat insulation cavity shell, the shell and the motor, an air inlet channel and an air outlet channel are arranged in the motor, and the air outlet channel is provided with an air outlet. The utility model improves the heat insulation effect on the motor, so that the cooking cavity can set higher temperature for heating food.

Description

Improve cooking utensil of thermal-insulated effect of motor

[ field of technology ]

The utility model belongs to the technical field of food processing, and particularly relates to a cooking utensil.

[ background Art ]

In the baking type cooking appliances in the prior art, the heat dissipation of a motor is a great difficulty because the temperature of a baking cavity is higher during heating. Taking an air fryer as an example, a motor drives a cooling fan to rotate, the cooling fan sucks air from an opening at the top and flows through the surface of the motor, then the air is blown into a cavity between the shell and the heat shield, and finally the air flows out from an air outlet of the shell, so that heat is dissipated for the motor. The motor with the structure is not provided with a special isolation cavity, the heat emitted by the heat shield is easily conducted to the motor, and the temperature rise of the motor is easily higher. When the hot air chamber temperature is further increased, more than one layer of heat shield is required, resulting in increased costs. After wind flows in from the opening on the side face of the top cover, as the wind guide cavity is not arranged around the motor, the wind cannot flow close to the surface of the motor when flowing through the motor, the wind speed on the surface of the motor is small, the heat dissipation efficiency of the motor is low, the wind quantity on the top surface of the motor is small, and the heat dissipation effect on the top surface of the motor is poor.

[ utility model ]

Aiming at the defects in the prior art, the technical problem to be solved by the utility model is to provide the cooking utensil for improving the heat insulation effect of the motor and the heat insulation effect of the motor.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a improve cooking utensil of motor thermal-insulated effect, includes the shell and locates the thermal-insulated cover in the shell, be equipped with thermal-insulated space between shell and the thermal-insulated cover, install the motor in the thermal-insulated space, the thermal-insulated cover inboard is equipped with the culinary art chamber, be equipped with heating tube and hot fan in the culinary art chamber, the motor has the lower output shaft that stretches into the culinary art intracavity side, lower output shaft is connected with hot-blast fan, the motor has an upper output shaft, upper output shaft has the thermantidote, the top of thermal-insulated cover is equipped with thermal-insulated chamber casing down, thermal-insulated cover and thermal-insulated chamber casing down, form the thermal-insulated chamber of motor between thermal-insulated chamber casing, shell and the motor down, the thermal-insulated chamber of motor is equipped with air inlet passageway and air-out passageway, the air inlet passageway is equipped with the air outlet, the thermantidote is used for realizing the thermal-insulated intracavity wind flow of motor.

Preferably, the motor heat insulation cavity is provided with a first air channel at the inner side close to the motor, the upper end of the first air channel is connected with the air inlet, the outer side of the first air channel is provided with a second air channel, the bottom end of the first air channel is communicated with the bottom end of the second air channel, and the upper end of the second air channel is connected with the air outlet.

Preferably, the top of shell sets up the top cap, the top cap is equipped with downwardly extending and encircles on the interior spacer bar that the motor set up, the inboard of thermal-insulated chamber casing is equipped with around under the interior spacer bar that the motor set up, interior spacer bar up and interior spacer bar down meet and form holistic interior spacer bar, and, form between interior spacer bar and the motor first wind channel, interior spacer bar and thermal-insulated chamber casing between form the second wind channel.

Preferably, a heat insulation gap is arranged between the whole circumferential side wall of the motor and the side wall of the first air duct.

Preferably, the two air inlets are correspondingly positioned at the front side and the rear side of the top cover, and the two air outlets are correspondingly positioned at the left side and the right side of the top cover; and/or the upper side of the heat insulation cavity shell is connected with the shell.

Preferably, a blocking rib for separating the air inlet from the air outlet is arranged between the air inlet and the air outlet.

Preferably, waterproof ribs for preventing water from flowing into the motor heat insulation cavity along the air inlet are arranged in the air inlet.

Preferably, the waterproof ribs comprise an outer waterproof rib and an inner waterproof rib, the outer waterproof rib and the inner waterproof rib are sequentially arranged from outside to inside along the air inlet, and the outer waterproof rib and the inner waterproof rib are arranged in a staggered manner in the circumferential direction of the air inlet.

Preferably, the bottom of the heat shield is connected with a base, and a cooking cavity is formed between the heat shield and the base.

Preferably, the lower heat insulation cover is arranged on the outer side of the heat insulation cover, and the bottom is connected with the base.

The utility model adopts the technical scheme and has the following beneficial effects:

1. the heat insulation cavity of the motor forms an isolated and airtight environment in the heat insulation space area between the shell and the heat insulation cover, and heat emitted by the heat insulation cover can directly enter the heat insulation cavity of the motor except for other through holes at the position of a motor shaft hole, so that the heat insulation effect on the motor is greatly improved, the cooking cavity can be set to a higher temperature for heating food, and meanwhile, the multi-layer heat insulation cover is not required to be used for the motor, so that the cost is greatly reduced.

The motor heat insulation cavity is used for air inlet through the air inlet and air outlet, the cooling fan is used for realizing air flow in the motor heat insulation cavity, the motor can generate heat, but the motor heat insulation cavity can be used for air cooling through air flow, so that overhigh temperature in the motor heat insulation cavity is avoided, and the heat dissipation effect of the motor is improved.

2. A first air channel is formed between the inner isolation rib and the motor, a second air channel is formed between the inner isolation rib and the heat insulation cavity shell, the cooling fan is arranged at the top of the motor, and the air inlet channel is arranged above the cooling fan, so that wind can be sucked from the upper part of the cooling fan, the cooling fan rotates to drive the flow of wind in the heat insulation cavity of the motor, an internal circulation air channel system is formed, wind is sucked from an air inlet connected with the upper end of the first air channel, flows downwards in the first air channel, flows upwards from the second air channel, and is blown out from an air outlet connected with the upper end of the second air channel. The temperature is the lowest when wind gets into from the air intake, takes away the heat of motor in first wind channel, and the temperature rises, and the second wind channel that flows again blows out from the air outlet.

3. Because the heat insulation gap is arranged between the whole circumferential side wall of the motor and the side wall of the first air duct. Like this, the motor is located first wind channel, and the intercommunication department in first wind channel and second wind channel is located the below of motor, and the motor is more unanimous apart from the distance of first wind channel lateral wall, and the motor is wholly wrapped up in first wind channel for each position on motor surface all can have great velocity of flow, thereby radiating efficiency is higher, uses less thermantidote just can obtain better radiating effect.

4. The top cover is provided with the air inlet and the air outlet, and the air inlet and the air outlet can be downwards opened, so that the opening at other positions of the machine is not needed, and the overall aesthetic property of the machine is improved.

5. Because the waterproof ribs are arranged in the air inlet, when the machine is uncapped for use, for example, the machine is uncapped for 90 degrees, and water can be prevented from flowing into the machine from the side wall of the air inlet.

6. The waterproof ribs comprise an outer waterproof rib and an inner waterproof rib, the outer waterproof rib and the inner waterproof rib are sequentially arranged from outside to inside along the air inlet, and the outer waterproof rib and the inner waterproof rib are arranged in a staggered mode in the radial direction of the air inlet, so that water can be effectively prevented from splashing into the machine.

7. The lower heat-insulating cover is arranged on the outer side of the heat-insulating cover, the bottom of the lower heat-insulating cover can be connected with the base, and therefore the heat-insulating space can form an inner-outer double-layer structure, and the heat-insulating effect is better.

These features and advantages of the present utility model will be disclosed in detail in the following detailed description and the accompanying drawings.

[ description of the drawings ]

The utility model is further described with reference to the accompanying drawings:

fig. 1 is a schematic overall sectional view of a cooking apparatus according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a cooking appliance according to an embodiment of the present utility model, partially in section;

FIG. 3 is a schematic view showing an exploded structure of a motor insulation assembly in a cooking appliance according to an embodiment of the present utility model;

fig. 4 is a schematic view showing a partial structure of a top cover in a cooking appliance according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram showing a cross-sectional structure of a motor heat insulation assembly in a first embodiment of a cooking appliance according to the present utility model;

FIG. 6 is a schematic diagram of a cross-sectional structure of a motor insulation assembly in a first embodiment of a cooking appliance according to the present utility model;

fig. 7 is a schematic diagram of an overall cross-sectional structure of a cooking apparatus according to a first embodiment of the present utility model;

FIG. 8 is an enlarged schematic view of FIG. 7A;

FIG. 9 is an enlarged schematic view of the structure of FIG. 7B;

fig. 10 is a schematic structural view of a cooking appliance according to a second embodiment of the present utility model;

reference numerals: the cooking chamber 100, the base 10, the heating plate 101, the heating pipe 102, the shell 11, the upper positioning step surface 111, the heat shield 12, the heating pipe 13, the hot fan 14, the motor heat insulation chamber 200, the motor 20, the first air duct 201, the second air duct 202, the motor heat insulation assembly 2, the lower heat insulation cover 21, the flange 211, the motor shaft hole 212, the heat insulation chamber shell 22, the inner isolation rib lower 221, the fixing foot 222, the lower positioning step surface 223, the top cover 23, the inner isolation rib upper 231, the air inlet 232, the inner waterproof rib 2321, the outer waterproof rib 2322, the air outlet 233, the outer side 234, the blocking rib 235 and the cooling fan 24.

[ detailed description ] of the utility model

The technical solutions of the embodiments of the present utility model will be explained and illustrated below with reference to the drawings of the embodiments of the present utility model, but the following embodiments are only preferred embodiments of the present utility model, and not all embodiments. Based on the examples in the implementation manner, other examples obtained by a person skilled in the art without making creative efforts fall within the protection scope of the present utility model.

Those skilled in the art will appreciate that the features of the examples and embodiments described below can be combined with one another without conflict.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The words "upper", "lower", "inner", "outer", and the like, which refer to an orientation or positional relationship, are merely based on the orientation or positional relationship shown in the drawings, are merely for convenience in describing the present utility model and to simplify the description, and do not indicate or imply that the devices/elements referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus are not to be construed as limiting the present utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and include, for example, fixedly attached, detachably attached, or integrally attached; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Example 1

As shown in fig. 1 to 9, the cooking appliance in this embodiment may be specifically described with reference to the structure of an air fryer, and includes a main body 1, the main body 1 includes a housing 11 and a heat shield 12 disposed in the housing 11, a heat insulation space is disposed between the housing 11 and the heat shield 12, a motor 20 is installed in the heat insulation space, a cooking cavity 100 is disposed in the heat shield 12, a heating tube 13 and a heat fan 14 are disposed in the cooking cavity 100, the motor 20 has a lower output shaft extending into the inner side of the cooking cavity, the lower output shaft is connected with the heat fan 14, the motor 20 has an upper output shaft, and the upper output shaft is connected with a cooling fan 24.

In this embodiment, in order to improve the heat insulation effect of the motor, the motor 20 is disposed in the motor heat insulation cavity 200, and the motor heat insulation cavity 200 is formed by enclosing the motor heat insulation assembly 2. The motor insulation assembly 2 comprises a lower insulation cover 21 and an insulation chamber housing 22 arranged above the insulation shield 12, wherein the lower insulation cover 21 is connected with the lower side of the insulation chamber housing 22. The motor heat insulation cavity 200 is formed among the lower heat insulation cover 21, the heat insulation cavity shell 22, the shell 11 and the motor 20, the motor heat insulation cavity 200 is provided with an air inlet channel and an air outlet channel, the air inlet channel is provided with an air inlet 232, the air outlet channel is provided with an air outlet 233, and the cooling fan 24 is used for realizing air flow in the motor heat insulation cavity.

As shown in fig. 1, 2 and 3, the heat insulation cavity 200 of the motor forms an isolated and airtight environment in the heat insulation space region between the housing and the heat insulation cover, and heat emitted by the heat insulation cover 12 can directly enter the heat insulation cavity 200 of the motor except for other through holes from the position of the motor shaft hole 212, so that the heat insulation effect on the motor is greatly improved, the cooking cavity can set a higher temperature for heating food, and meanwhile, a plurality of layers of heat insulation covers are not needed for the motor, so that the cost is greatly reduced.

The motor heat insulation cavity 200 is used for air inlet through the air inlet 232 and air outlet through the air outlet 233, the cooling fan 24 is used for realizing air flow in the motor heat insulation cavity 200, the motor can generate heat, but the motor heat insulation cavity 200 can be used for air cooling through air flow, so that overhigh temperature in the motor heat insulation cavity is avoided, and the heat dissipation effect of the motor is improved.

The motor insulation chamber 200 not only serves to insulate external heat, but also dissipates heat from the motor 20. As shown in fig. 5 and 6, the motor heat insulation cavity 200 is provided with a first air duct 201 near the inner side of the motor 20, the upper end of the first air duct 201 is connected with an air inlet 232, the outer side of the first air duct 201 is provided with a second air duct 202, the bottom end of the first air duct 201 is communicated with the bottom end of the second air duct 202, and the upper end of the second air duct 202 is connected with an air outlet 233. The cooling fan is positioned at the top of the motor, and the air inlet channel is positioned above the cooling fan, so that wind energy can be sucked from the upper part of the fan, and the cooling fan rotates to drive the wind in the heat insulation cavity of the motor to flow, so that an internal circulation air channel system is formed. Thus, wind is sucked from the air inlet 232, flows downward in the first air duct 201, then flows upward from the second air duct 202, and finally is blown out from the air outlet 233. The air enters from the air inlet 232 at the lowest temperature, takes away the heat of the motor in the first air duct 201, rises in temperature, flows through the second air duct 202, and is blown out from the air outlet 233. Of course, it is understood that the motor heat insulation cavity 200 may be provided with only one air duct, the lower end is connected with the air inlet, and the upper end is connected with the air outlet.

In order to form the motor insulation chamber 200, as shown in fig. 1, 2 and 8, an upwardly raised middle opening is provided at the middle position of the top of the housing 11, and the upper portion of the insulation chamber housing 22 is located inside the middle opening. The upper side of the heat insulation cavity shell 22 is connected with the shell 11, specifically, the top inner side of the middle opening is provided with an upper positioning step surface 111 along the circumferential direction, and the upper part of the heat insulation cavity shell 22 is connected with the upper positioning step surface 111.

As shown in fig. 1, 2 and 9, the edge of the lower heat insulation cover 21 is provided with an upwardly extending folded edge, the top end of the folded edge is turned outwards to form a folded edge 211, the inner side of the bottom of the heat insulation cavity shell 22 is provided with a lower positioning step surface 223, and the folded edge 211 is connected with the lower positioning step surface 223.

In addition, the corners of the heat insulation cavity shell 22 are provided with fixing legs 222, the fixing legs 222 are provided with fixing holes, the fixing holes can be fixed on the heat insulation cover 12 by bolts, and meanwhile, the lower heat insulation cover 21 is pressed and fixed on the heat insulation cover 12, so that the lower heat insulation cover 21 is fixed without a separate fastener.

Further, a top cover 23 is disposed at a middle position of the top of the housing 11, and the top cover 23 covers the middle opening. Thus, in the above technical solution, the lower heat insulation cover 21 and the heat insulation cavity housing 22 are sequentially connected with the outer shell 11 and the top cover 23, and jointly enclose to form the motor heat insulation cavity 200.

As shown in fig. 4, 5 and 6, in order to form the first air duct 201 and the second air duct 202, the top cover 23 is provided with an inner isolation rib 231 extending downward and surrounding the motor 20, correspondingly, an inner isolation rib lower 221 surrounding the motor 20 is provided on the inner side of the heat insulation cavity housing 22, the inner isolation rib upper 231 and the inner isolation rib lower 221 are vertically connected to form an integral inner isolation rib, the first air duct 201 is formed between the inner isolation rib and the motor 20, and the second air duct 202 is formed between the inner isolation rib and the heat insulation cavity housing 22. Specifically, inner spacer rib lower parts 221 are arranged side by side on the inner sides of the left side and the right side of the heat insulation cavity shell 22, the inner side part of the heat insulation cavity shell 22 under the inner spacer rib lower parts 221 is used as a part of the first air duct 201, the outer side part of the inner spacer rib lower parts 221 is used as a part of the second air duct 202, and inner spacer rib upper parts 231 are arranged at corresponding positions on the top cover 23 and are matched with the inner spacer rib lower parts 221. It will be appreciated that the inner spacer rib lower 221 may not be separately provided, but the inner spacer rib upper 231 on the top cover may be extended downward to cover the position of the inner spacer rib lower 221, or the inner spacer rib upper 231 may not be separately provided, but the inner spacer rib lower 221 on the insulating cavity housing may be extended upward to cover the position of the inner spacer rib upper 231.

Further, a heat insulation gap is formed between the entire circumferential side wall of the motor 20 and the first air duct side wall. Like this, the motor is located first wind channel, and the intercommunication department in first wind channel and second wind channel is located the below of motor, and the motor is more unanimous apart from the distance of first wind channel lateral wall, and the motor is wholly wrapped up in first wind channel for each position on motor surface all can have great velocity of flow, thereby radiating efficiency is higher, uses less thermantidote just can obtain higher radiating effect.

In order to increase the air volume and improve the heat dissipation effect, the air inlet 232 and the air outlet 233 are both disposed on the top cover 23. The two air inlets 232 are correspondingly positioned on the front side and the rear side of the top cover 23, and the two air outlets 233 are correspondingly positioned on the left side and the right side of the top cover 23. Specifically, the edge of the top cover 23 is provided with a downwardly extending outer side 234, the outer side 234 being located outside the opening at the middle of the top of the housing. Because the top cap is equipped with on the left and right sides keeps apart the muscle 231 in, also is equipped with on the front and back both sides simultaneously on the inner isolation muscle 231, wherein on the inner isolation muscle of left and right sides and the interior isolation muscle in the left and right sides of thermal-insulated chamber casing 22 down 221 meet, on the inner isolation muscle of front and back both sides 231 and thermal-insulated chamber casing 22 front and back both sides limit meet, the top of top cap is equipped with the air inlet passageway of intercommunication air intake 232 and first wind channel on the interior isolation muscle of front and back both sides on 231 top. In this way, the inner sides of the outer sides of the front and rear sides of the top cover are communicated with the part of the first air channel on the heat insulation cavity shell 22 to form an air inlet 232, and the inner sides of the outer sides of the left and right sides of the top cover are communicated with the part of the second air channel on the heat insulation cavity shell 22 to form an air outlet 233. Therefore, the top cover 23 is provided with both an air inlet and an air outlet, and the air inlet 232 and the air outlet 233 are opened downwards, so that the opening at other positions of the machine is not needed, and the overall aesthetic property of the machine is improved.

As shown in fig. 4, in order to avoid the mutual influence of the air inlet and the air outlet, a blocking rib 235 for separating the air inlet from the air outlet is disposed between the air inlet 232 and the air outlet 233, and the blocking rib 235 is connected with the outer side 234 and the inner isolation rib 231.

As shown in fig. 8, the air inlet 232 is provided therein with a waterproof rib for blocking water flowing into the motor heat insulation cavity along the air inlet. So that when the machine is uncapped for use, for example 90 deg., water is prevented from flowing into the machine from the side wall of the air intake. In this embodiment, waterproof muscle carry out special design, specifically include outer waterproof muscle 2322 and interior waterproof muscle 2321, outer waterproof muscle 2322 and interior waterproof muscle 2321 set gradually from outside to inside along air intake 232 to outer waterproof muscle 2322 and interior waterproof muscle 2321 stagger the setting in the circumference of air intake. Because the air intake mouth portion is downward, corresponding, outer waterproof muscle 2322 is under, and interior waterproof muscle 2321 is in the top of outer waterproof muscle 2322, in radial, outer waterproof muscle 2322 is radial outside, and interior waterproof muscle 2321 is radial inboard, therefore, outer waterproof muscle 2322 and interior waterproof muscle 2321 are not only vertically crisscross, and radially inside and outside crisscross in addition can prevent effectively that water from splashing into the machine.

It can be appreciated that the lengths of the outer waterproof rib 2322 and the inner waterproof rib 2321 extending in the horizontal direction, and the distances between the vertical direction and the horizontal direction are selected according to actual tests, so that the waterproof effect is ensured, and the air inlet effect is not affected.

Referring to the structure of the existing air fryer, the body 1 further comprises a base 10, wherein the base 10 is connected to the bottom of the heat shield 12, and a cooking cavity is formed between the heat shield 12 and the base 10. The heating plate 101 can be arranged on the base 10, and the heating pipe 102 is arranged below the heating plate 101, so that the cooking cavity is heated up and down, and the cooking cavity can be uniformly heated.

It will be appreciated that, in order to further improve the heat insulation effect, the lower heat insulation cover 21 may be covered on the outer side of the heat insulation cover 12 and the bottom thereof may be connected to the base 10. Therefore, the heat insulation space can form an inner-outer double-layer structure, and the heat insulation effect is better.

Example two

As shown in fig. 10, unlike the first embodiment, the air inlet 232 is disposed at the top of the top cover 23, and a plurality of air inlet holes may be formed, the shape of the air inlet holes is not limited, and a plurality of air inlet holes are combined as the air inlet 232. And the air outlets 233 are arranged on the sides of the top cover 23, namely the front side, the back side, the left side and the right side, and the air outlets on the periphery can be directly communicated. Thus, air is directly fed into the top, the air duct is shorter, and air is fed more smoothly; meanwhile, the area of the air outlet is increased, so that the air flows in the motor heat insulation cavity 200 more smoothly, and the heat dissipation effect of the motor is further improved.

While the utility model has been described in terms of specific embodiments, it will be appreciated by those skilled in the art that the utility model is not limited thereto but includes, but is not limited to, the drawings and the description of the specific embodiments. Any modifications which do not depart from the functional and structural principles of the utility model are intended to be included within the scope of the appended claims.

Claims (10)

1. The utility model provides a improve cooking utensil of motor heat-proof effect, includes the shell and locates the heat exchanger in the shell, be equipped with thermal-insulated space between shell and the heat exchanger, install the motor in the thermal-insulated space, the heat exchanger inboard is equipped with the culinary art chamber, be equipped with heating tube and hot-blast fan in the culinary art chamber, the motor has the lower output shaft that stretches into the culinary art intracavity side, lower output shaft is connected with the hot-blast fan, its characterized in that, the motor has an upper output shaft, upper output shaft has the thermantidote, the top of heat exchanger is equipped with down thermal-insulated lid and thermal-insulated chamber casing, the downside of thermal-insulated chamber casing is connected down, form the motor thermal-insulated chamber between thermal-insulated lid, thermal-insulated chamber casing, shell and the motor, the motor thermal-insulated chamber is equipped with air inlet channel and air-out passageway, the air inlet channel is equipped with the air outlet, the thermantidote is used for realizing motor thermal-insulated intracavity air flow.

2. The cooking utensil for improving the heat insulation effect of a motor according to claim 1, wherein the motor heat insulation cavity is provided with a first air channel at the inner side close to the motor, the upper end of the first air channel is connected with an air inlet, the outer side of the first air channel is provided with a second air channel, the bottom end of the first air channel is communicated with the bottom end of the second air channel, and the upper end of the second air channel is connected with an air outlet.

3. The cooking utensil for improving heat insulation effect of a motor according to claim 2, wherein a top cover is arranged at the top of the shell, the top cover is provided with an inner isolation rib which extends downwards and is arranged around the motor, the inner side of the heat insulation cavity shell is provided with an inner isolation rib arranged around the motor, the inner isolation rib is connected with the inner isolation rib up and down to form an integral inner isolation rib, the first air channel is formed between the inner isolation rib and the motor, and the second air channel is formed between the inner isolation rib and the heat insulation cavity shell.

4. The cooking appliance for improving the heat insulation effect of a motor according to claim 2, wherein a heat insulation gap is formed between the entire circumferential side wall of the motor and the side wall of the first air duct.

5. The cooking appliance for improving the heat insulation effect of a motor according to claim 1, wherein two air inlets are arranged and are correspondingly positioned at the front side and the rear side of the top cover, and two air outlets are arranged and are correspondingly positioned at the left side and the right side of the top cover; and/or the upper side of the heat insulation cavity shell is connected with the shell.

6. The cooking device for improving heat insulation effect of motor according to claim 5, wherein a blocking rib for separating the air inlet and the air outlet is provided between the air inlet and the air outlet.

7. The cooking appliance for improving the heat insulation effect of a motor according to claim 1, wherein the air inlet is internally provided with a waterproof rib for preventing water from flowing into the heat insulation cavity of the motor along the air inlet.

8. The cooking device for improving the heat insulation effect of a motor according to claim 7, wherein the waterproof ribs comprise an outer waterproof rib and an inner waterproof rib, the outer waterproof rib and the inner waterproof rib are sequentially arranged from outside to inside along the air inlet, and the outer waterproof rib and the inner waterproof rib are staggered in the circumferential direction of the air inlet.

9. The cooking appliance for improving the heat insulation effect of a motor according to claim 1, wherein a base is connected to the bottom of the heat shield, and a cooking cavity is formed between the heat shield and the base.

10. The cooking appliance for improving a heat insulation effect of a motor as claimed in claim 9, wherein the lower heat insulation cover is provided at an outer side of the heat insulation cover, and the bottom is connected with the base.

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