CN116807256A - Cooking device, cooking all-in-one machine and integrated kitchen - Google Patents

Abstract

The utility model relates to a cooking device, a cooking all-in-one machine and an integrated stove, comprising: a liner having an opening; the air inlet is formed in the first side wall of the inner container; the first fan blade is arranged in the inner container, is opposite to the first side wall and is used for driving gas to enter the inner container from the air inlet; further comprises: the slow flow cavity is provided with a slow flow inlet and a slow flow outlet, wherein the slow flow inlet is communicated with the outside, and the slow flow outlet is communicated with the air inlet through a first fluid channel; and the airflow velocity in the first fluid channel is smaller than or equal to the airflow velocity in the slow flow cavity, and both are smaller than the airflow velocity at the slow flow inlet. The utility model can realize the forced air exhaust of the inner container, reduce the influence on the uniformity of the temperature field in the inner container, and avoid the problem of pneumatic noise in the inner container caused by the action of opening and closing the door in the cooking process.

Description

Cooking device, cooking all-in-one machine and integrated kitchen

Technical Field

The utility model relates to the field of cooking devices, in particular to a cooking device, a cooking all-in-one machine and an integrated kitchen.

Background

The back of the inner container of the cooking device with the baking function such as an oven, a steaming oven and the like is provided with a hot air blower, the rear side of the inner cavity of the inner container is provided with a hot air baffle, the hot air baffle and the back plate of the inner container enclose a hot air chamber, fan blades of the hot air blower are positioned in the hot air chamber, and the periphery of the fan blades is provided with a heating pipe. Under the working condition, under the action of the fan blades of the air heater, air in the inner cavity of the inner container enters the hot air chamber through the air inlet on the hot air baffle, and after being heated in the hot air chamber, the air flows back into the inner cavity of the inner container under the action of the centrifugal force of the fan blades, so that hot air circulation is formed in the inner cavity of the inner container, and the heating of food in the inner container is realized.

Further, in the existing cooking device with the baking function, only one air outlet is generally formed in the inner container, and when the air pressure at the air outlet is greater than the external atmospheric pressure, redundant air in the inner container is discharged outside through the air outlet. However, when foods with large moisture content (such as cakes, egg tarts, etc.) are baked, the humidity in the inner container is large, and the above exhaust mode cannot timely exhaust the moisture, so that the cooking effect is affected.

For this reason, the prior art generally discharges the excessive steam in the inner container during the baking process by means of air blowing, for example, chinese patent No. ZL 20212240399. X (issued publication No. CN 216307871U), an integrated oven with cooking device, chinese patent No. ZL 202221059853.9 (issued publication No. CN 218074470U), an air blowing structure for cooking device and steaming and baking all-in-one machine, etc. However, the conventional air blowing method has the following problems: (1) The cold air is blown into the inner container directly, so that the uniformity of the temperature field inside the inner container is influenced; (2) The external air is blown into the inner container by adopting a driving device such as a blower, and the air flow rapidly enters the inner container to influence the uniformity of the temperature field of the inner container.

Disclosure of Invention

The first technical problem to be solved by the utility model is to provide a cooking device which can realize strong discharge of the inner container and has little influence on the uniformity of the temperature field inside the inner container.

The second technical problem to be solved by the utility model is to provide a cooking device which can realize the strong exhaust of the inner container and can avoid the pneumatic noise in the inner container caused by the door opening and closing action.

The third technical problem to be solved by the utility model is to provide a cooking all-in-one machine with the cooking device aiming at the prior art.

The fourth technical problem to be solved by the utility model is to provide an integrated kitchen range with the cooking all-in-one machine aiming at the prior art.

The utility model solves at least one of the technical problems by adopting the following technical proposal: a cooking apparatus comprising:

a liner having an opening for food to enter and exit the liner;

the air inlet is formed in the first side wall of the inner container;

the first fan blade is arranged in the inner container, is opposite to the first side wall and is used for driving gas to enter the inner container from the air inlet;

characterized by further comprising:

the slow flow cavity is provided with a slow flow inlet and a slow flow outlet, wherein the slow flow inlet is communicated with the outside, and the slow flow outlet is communicated with the air inlet through a first fluid channel;

and the airflow velocity in the first fluid channel is smaller than or equal to the airflow velocity in the slow flow cavity, and both are smaller than the airflow velocity at the slow flow inlet.

Further, the first fluid channel may have various implementation manners, and preferably, the slow flow outlet of the slow flow cavity is communicated with the air inlet of the inner container, so that the internal structure of the cooking device is concise.

Further, the slow flow cavity is arranged outside the inner container. Therefore, the inner space of the inner container can be prevented from being occupied by the slow flow cavity, and the size of the cooking inner cavity inside the inner container is ensured.

Further, a slow flow cover is covered on the outer surface of the first side wall of the liner at the position where the air inlet is located to form the slow flow cavity, the slow flow inlet is formed on the slow flow cover, and the cover opening of the slow flow cover forms the slow flow outlet. On one hand, the slow flow cavity structure can be well formed, the slow flow outlet can be well communicated with the air inlet, and on the other hand, the waste heat generated by the inner container can be utilized to perform convection heat exchange with gas entering the slow flow cavity, so that the introduced gas is preheated, and meanwhile, the heat loss of cooking inside the inner container can be avoided.

Further, the slow flow cover comprises a circular truncated cone-shaped cover body, the cover body and the outer surface of the first side wall enclose the slow flow cavity, and the cross section of the cover body is gradually increased from outside to inside relative to the liner to form an inner guide ring surface on the inner side surface of the cover body. The air flow entering through the slow flow inlet can be guided to the slow flow outlet through the inner guide ring surface.

Further, the horizontal projection of the slow flow inlet of the slow flow cavity on the first side wall is staggered with the air inlet. So as to prolong the stay time of the introduced gas in the slow flow cavity to a certain extent, and better realize the preheating of the gas introduced into the liner on the basis of ensuring the induced air efficiency.

Further, the cover wall of the slow flow cover opposite to the air inlet is provided with the slow flow inlet, and the inner side surface of the slow flow cover is convexly provided with a flow guide boss opposite to the air inlet. Therefore, the air can be guided to the air inlet through the blocking of the flow guide boss, and the air guiding efficiency is ensured.

Further, the fan blade shaft of the first fan blade sequentially penetrates through the air inlet and the shaft hole on the flow guide boss. Therefore, the air inlet is opposite to the center of the first fan blade, and the negative pressure at the center of the first fan blade is stable, so that the stability of the air flow entering the inner container can be improved. Meanwhile, the slow flow cavity can be spaced between the inner container and the driving motor of the first fan blade, so that high-temperature waste heat of the inner container is prevented from directly acting on the driving motor, the working environment temperature of the driving motor is reduced, and the service life of the driving motor is prolonged.

Further, the shaft hole is formed in the cover wall of the slow flow cover opposite to the air inlet, the slow flow cover wall of the hole edge of the shaft hole is recessed in the circumferential direction to form a disc-shaped groove, a disc-shaped flow guide boss is formed on the inner side surface of the slow flow cover, the driving motor of the first fan blade is arranged outside the slow flow cover through a motor bracket, the motor bracket is provided with a shaft seat for the motor shaft of the driving motor to penetrate through, the shaft seat is cylindrical and is just right embedded in the groove, and a sealing ring is arranged between the shaft seat and the groove along the circumferential direction. Therefore, the stable arrangement of the driving motor of the first fan blade can be realized while the flow guide boss structure is formed, and the tightness of the penetration part of the slow flow cover for the motor shaft of the driving motor can be ensured.

Further, the appearance of the flow guiding boss is in a truncated cone shape and takes the fan blade shaft of the first fan blade as the center, the cross section of the flow guiding boss increases gradually from inside to outside, and the end face and the side face of the flow guiding boss smoothly transition along the circumferential direction so that the side face of the flow guiding boss forms an outer flow guiding ring surface along the circumferential direction. After the air flow entering from the slow flow inlet flows to the guide boss, one part of the air is guided to the air inlet through the outer guide ring surface, and the other part of the air is guided to the end face of the guide boss through the outer guide ring surface and then to the air inlet.

Further, the maximum diameter of the outer guide ring surface is smaller than or equal to the diameter of the air inlet, and the included angle beta between the outer guide ring surface and the horizontal direction is as follows: beta is more than or equal to 30 degrees and less than or equal to 80 degrees. Therefore, the air flow can be better guided to the air inlet through the outer guide ring surface, and the air flow is prevented from being detained at the slow flow inlet end of the slow flow cavity.

Further, the depth H of the slow flow cavity along the distance direction from the slow flow inlet to the slow flow outlet and the diameter D of the slow flow inlet of the slow flow cavity ₁ The following relationship is satisfied: 5mm is less than or equal to 0.3D ₁ mm≤H≤D ₁ mm. Therefore, the air quantity and the air guiding speed can be ensured, the occupation of the internal installation space of the cooking device can be reduced to the greatest extent, the problem of small air guiding quantity caused by too small depth of the slow flow cavity is solved, and the problems of too small air guiding flow speed, large installation space occupation, too long motor shaft of the driving motor and the like caused by too large depth of the slow flow cavity are solved.

Further, the first side wall is a side wall connected with the opening of the inner container. The door closing action drives the air flow to move to the deep part of the inner container, and the air flow is turned to flow from front and back to left and right through the blocking of the side wall opposite to the opening of the inner container, so that the air flow can enter the slow flow cavity better through the air inlet on the first side wall.

Further, an air guiding pipe is connected to the slow flow inlet of the slow flow cover, and the air outlet end of the air guiding pipe extends along the central axis direction of the slow flow inlet. On one hand, the length of the induced air pipe can be shortened to a certain extent, and on the other hand, the external air can smoothly enter the slow flow inlet along the induced air pipe.

Further, a second fan blade is further arranged in the liner, the second fan blade and the first fan blade are coaxially arranged, and the second fan blade and the first fan blade are jointly located in a hot air chamber surrounded by a hot air baffle plate and the side where the first side wall is located, wherein the hot air baffle plate is provided with a hot air inlet opposite to the second fan blade and a hot air outlet surrounding the hot air inlet. The introduced gas can be premixed with the original gas in the inner container in the hot air chamber, and can be guided into the inner cavity of the inner container under the combined action of the centrifugal forces of the first fan blade and the second fan blade, so that the air guiding efficiency is further improved.

Further, the first fan blade and the second fan blade are integrated and comprise a base plate taking the fan blade shaft of each fan blade as the center, wherein the first fan blade is formed by arranging first fan blades on one side surface of the base plate along the circumferential interval, and the second fan blade is formed by arranging second fan blades on the other side surface of the base plate along the circumferential interval. Therefore, the first fan blade and the second fan blade are simple in structure, and driving and control of the first fan blade and the second fan blade and installation of the first fan blade and the second fan blade in the cooking device are facilitated.

The technical scheme adopted for further solving the third technical problem is as follows: a cooking all-in-one machine, characterized in that the cooking device as described above is applied.

The technical scheme adopted for further solving the fourth technical problem is as follows: an integrated kitchen range with the cooking all-in-one machine is characterized in that a kitchen range is arranged on the cooking device.

Compared with the prior art, the utility model has the advantages that: according to the utility model, the mode of forced air induction and forced exhaust is adopted to externally exhaust the redundant steam in the inner container in the baking process, and the external air can be well mixed with the original air in the inner container under the action of the centrifugal force of the first fan blade after being introduced by the first fan blade of the induced air fan, so that the influence on the uniformity of the temperature field in the inner container is reduced.

Further, in the utility model, the slow flow cavity is arranged, and the slow flow outlet of the slow flow cavity passes through the first fluid channel, and the flow speed is slowed down by the slow flow cavity, so that the flow speed of the air flow in the first fluid channel is less than or equal to the flow speed of the air flow in the slow flow cavity. Thus, the external gas firstly enters the slow flow cavity and then enters the inner container, and the effect of stabilizing the pressure of the gas is achieved, so that the gas can stably enter the inner container at a certain flow rate. Meanwhile, external air enters the slow flow cavity and can generate certain heat exchange in the heat in the liner in the slow flow cavity, so that the influence on the uniformity of the temperature field inside the liner can be reduced better.

In addition, in the cooking process, if the door body of the cooking device is opened, external air can be brought into the inner container, so that the air pressure in the inner container is increased when the door is closed, and pneumatic noise is caused. In the utility model, through the arrangement of the slow flow cavity, the gas brought by opening the door can squeeze the gas in the inner container to enter the slow flow cavity, thereby ensuring the stability of the air pressure in the inner container and avoiding the problem of pneumatic noise in the inner container caused by the action of opening and closing the door in the cooking process.

Drawings

FIG. 1 is a schematic view of an integrated kitchen range according to an embodiment of the present utility model;

fig. 2 is a schematic structural view of a cooking apparatus according to an embodiment of the present utility model;

fig. 3 is a cross-sectional view of a cooking apparatus according to an embodiment of the present utility model;

FIG. 4 is an enlarged view of portion A of FIG. 3;

FIG. 5 is a schematic view of the structure of FIG. 3 in another direction;

FIG. 6 is an enlarged view of portion B of FIG. 5;

fig. 7 is a schematic view of a part of a cooking apparatus according to an embodiment of the present utility model (in a state of hiding a door);

FIG. 8 is a schematic view of a impeller according to an embodiment of the present utility model;

FIG. 9 is a schematic structural view of a flow-retarding cover according to an embodiment of the present utility model;

fig. 10 is a schematic view of the structure of fig. 9 in another direction.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for purposes of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and because the disclosed embodiments of the present utility model may be arranged in different orientations, these directional terms are merely for illustration and should not be construed as limitations, such as "upper", "lower" are not necessarily limited to orientations opposite or coincident with the direction of gravity. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly.

As shown in fig. 1 to 10, an integrated range includes a cooking device 1 having a roast function and a range 2 provided above the cooking device 1. The cooking device 1 includes a liner 10 with an opening at a front side, and a first sidewall 101 of the liner 10 is provided with an air inlet 102.

Further, as shown in fig. 4 and 6, a first fan 31 is installed in the inner container 10, and the first fan 31 is opposite to the first sidewall 101 and is used for driving gas to enter the inner container 10 through the air inlet 102. In addition, the cooking apparatus 1 further includes a slow flow chamber 50, and the slow flow chamber 50 has a slow flow inlet 511 and a slow flow outlet 512. Wherein, the slow flow inlet 511 communicates with the outside, and the slow flow outlet 512 communicates with the air inlet 102 through the first fluid channel. And, the flow rate of the air flow in the first fluid passage is equal to or less than the flow rate of the air flow in the slow flow chamber 50, and both are smaller than the flow rate of the air flow at the slow flow inlet 511.

Compared with the existing forced-draft mode, the first fan blade 31 is arranged in the inner container 10, so that the internal installation space of the cooking device 1 is not additionally occupied, external air can be well mixed with the original air in the inner container 10 under the action of the centrifugal force of the first fan blade 31 after being introduced through the first fan blade 31, and the influence on the uniformity of the internal temperature field of the inner container 10 is reduced. Further, in the present utility model, a slow flow chamber 50 is provided, and the slow flow outlet 512 of the slow flow chamber 50 passes through the first fluid channel, and the flow rate is slowed down by the slow flow chamber 50, so that the flow rate of the air flow in the first fluid channel is less than or equal to the flow rate of the air flow in the slow flow chamber 50. Thus, the external gas firstly enters the slow flow cavity 50 and then enters the inner container 10, and the effect of stabilizing the pressure of the gas is achieved, so that the gas can stably enter the inner container 10 at a certain flow rate. Meanwhile, the external air enters the slow flow cavity 50 and can perform certain heat exchange with the heat in the liner 10 in the slow flow cavity 50, and compared with the mode that the external air directly enters the liner 10, the influence on the uniformity of the temperature field inside the liner 10 can be better reduced. In addition, when the door of the cooking apparatus 1 is opened during cooking, external air is introduced into the inner container 10, and the air pressure inside the inner container 10 increases when the door is closed, thereby causing aerodynamic noise. In the utility model, by arranging the slow flow cavity 50, the gas carried in by the door opening can squeeze the gas in the inner container 10 to enter the slow flow cavity 50, thereby ensuring the stability of the air pressure in the inner container 10 and avoiding the problem of pneumatic noise in the inner container 10 caused by the door opening and closing action in the cooking process. In addition, the first fluid passage can be implemented in various ways, and in this embodiment, in order to simplify the internal structure of the cooking apparatus 1, the slow flow outlet 512 of the slow flow cavity 50 is communicated with the air inlet 102 of the inner container 10.

Preferably, the first sidewall 101 is a left sidewall or a right sidewall (specifically, a left sidewall in the present embodiment) of the liner 10. The door closing action drives the air flow to move deeply into the inner container 10, and the air flow is turned from front-back flow to left-right flow through the blocking of the rear side wall of the inner container 10, so that the air in the inner container 10 can be better extruded to enter the slow flow cavity 50 through the air inlet 102 on the first side wall 101. In this embodiment, the air inlet 102 and the first fan blade 31 are disposed on the left side wall of the inner container 10, however, the air inlet 102 and the first fan blade 31 may be disposed on a pair of opposite side walls of the inner container 10, for example, the air inlet 102 is disposed on the left side wall and the first fan blade 31 is mounted on the right side wall.

Further, in the present utility model, the slow flow cavity 50 may be disposed in the inner container 10 or outside the inner container 10, and in this embodiment, it is preferable that the slow flow cavity 50 is disposed outside the inner container 10, so as to avoid the occupation of the inner space of the inner container 10 by the slow flow cavity 50, and ensure the size of the cooking cavity (the inner container cavity except the hot air chamber 70 described below) inside the inner container 10. Specifically, the outer surface of the first sidewall 101 of the liner 10 is covered with a slow flow cover 5 at the location of the air inlet 102 to form the slow flow chamber 50, the slow flow inlet 511 is formed on the slow flow cover 5, and the cover opening of the slow flow cover 5 forms the slow flow outlet 512. On one hand, the structure of the slow flow cavity 50 can be well formed, the slow flow outlet 512 can be well communicated with the air inlet 102, and on the other hand, the waste heat generated by the liner 10 can be utilized to perform convection heat exchange with the gas entering the slow flow cavity 50, so that the introduced gas can be preheated, and meanwhile, the cooking heat loss inside the liner 10 can be avoided. In addition, in this embodiment, the slow flow cover 5 further includes a cover edge 52 formed by extending the edge of the cover body 51 radially outward in the circumferential direction, and the cover edge 52 is attached to the left outer side surface of the liner 10 in the length direction and is fixed to the left side wall of the liner 10 by a fastener, so that the slow flow cover 5 is stably mounted on the liner 10.

Further, as shown in fig. 6, the horizontal projection of the slow flow inlet 511 of the slow flow chamber 50 on the first side wall 101 is staggered with the air inlet 102, so that the residence time of the introduced gas in the slow flow chamber 50 can be prolonged to a certain extent, and the preheating of the gas introduced into the liner 10 can be better realized on the basis of ensuring the air introducing efficiency. Preferably, the slow flow inlet 511 is formed in a wall of the slow flow cover 5 opposite to the air inlet 102 (i.e., an outer end wall of the slow flow cover 5), and a guide boss 53 opposite to the air inlet 102 is protruded on an inner side surface of the slow flow cover. In this way, the air can be guided to the air inlet 102 by blocking the guide boss 53, so that the air guiding efficiency is ensured.

In addition, in the present embodiment, as shown in fig. 6, the fan shaft 41 of the first fan blade 31 sequentially penetrates through the air inlet 102 and the shaft hole 531 on the guide boss 53, so that the air inlet 102 is opposite to the center of the first fan blade 31, and the negative pressure at the center of the first fan blade 31 is stable, so that the stability of the air flow entering the liner 10 can be improved. In addition, the slow flow cavity 50 can be spaced between the inner container 10 and the driving motor 4 of the first fan blade 31, so that high-temperature waste heat of the inner container 10 is prevented from directly acting on the driving motor 4, the working environment temperature of the driving motor 4 is reduced, and the service life of the driving motor 4 is prolonged.

Specifically, in the embodiment, the shaft hole 531 is formed in a wall of the slow flow cover 5 opposite to the air inlet 102, the wall of the slow flow cover 5 along the hole of the shaft hole 531 is recessed in the circumferential direction to form a disk-shaped groove 533, and the disk-shaped flow guiding boss 53 is formed on the inner side surface of the slow flow cover 5. The driving motor 4 of the first fan blade 31 is mounted on the outer side of the slow flow cover 5 through a motor bracket 42, and the motor bracket 42 is provided with a shaft seat 421 for the motor shaft of the driving motor 4 (in this embodiment, the motor shaft and the fan blade shaft 41 are integrated), the shaft seat 421 is cylindrical and is directly embedded in the groove 533, and a sealing ring 6 is circumferentially arranged between the shaft seat 421 and the groove. Thus, the guide boss 53 structure can be formed, the driving motor 4 of the first fan blade 31 can be stably arranged, and the tightness of the penetration part of the motor shaft of the driving motor 4 of the slow flow cover 5 can be ensured. In addition, the length of the motor shaft of the driving motor can be shortened by providing the guide boss 53.

Further, if the horizontal projection of the slow flow inlet 511 of the slow flow chamber 50 on the first side wall 101 is not offset from the air inlet 102, the motor shaft needs to be installed after the air introduction pipe 8 described below, and the length of the motor shaft of the driving motor 4 needs to be long. The utility model can ensure that the length of the motor shaft is shorter by arranging the motor shaft and the motor shaft in a staggered way, and the shorter motor shaft can obtain the following technical effects:

(1) raw materials of a motor shaft are saved; (2) the manufacturing process is simpler; (3) when the driving motor 4 runs under high load, the dynamic balance performance is better, the damage risk of the driving motor 4 can be effectively reduced, and the service life of the driving motor 4 is prolonged; (4) noise reduction: vibration of the driving motor 4 is effectively reduced, and vibration noise is reduced; (5) from the perspective of hydrodynamics, the short axis design of the motor shaft can enable the fan blade disturbance to be more stable, so that the formed flow field performance is more stable, and the deviation between the actual working state and the theoretical design state caused by factors such as manufacturing, installation and the like is reduced.

Further, as shown in fig. 6 and 10, the outer shape of the flow guiding boss 53 is a truncated cone shape, and the cross section of the flow guiding boss 53 is gradually increased from inside to outside around the fan blade shaft 41 of the first fan blade 31, and the end surface and the side surface thereof smoothly transition in the circumferential direction, so that the side surface thereof forms an outer flow guiding ring surface 532 in the circumferential direction. After the airflow entering from the slow flow inlet 511 flows to the guide boss 53, a part of the airflow is guided to the air inlet 102 through the outer guide ring surface 532, and another part of the airflow is guided to the end surface of the guide boss 53 through the outer guide ring surface 532, and then is guided to the air inlet 102. Preferably, in the present embodiment, the maximum diameter of the outer guiding ring surface 532 is smaller than or equal to the diameter of the air inlet 102, and the included angle β between the outer guiding ring surface 532 and the horizontal direction is: beta is more than or equal to 30 degrees and less than or equal to 80 degrees. So that the air flow can be better guided to the air inlet 102 through the outer guide ring surface 532, and the air flow is prevented from being detained at the slow flow inlet 511 end of the slow flow cavity 50. In addition, the guide boss 53 is also advantageous in shortening the length of the motor shaft of the driving motor 4.

Further, as shown in fig. 4, the depth H of the slow flow chamber 50 along the blade axis 41 direction of the first blade 31 and the diameter D1 of the slow flow inlet 511 of the slow flow chamber 50 satisfy the following relationship: h is more than or equal to 5mm and less than or equal to 0.3D1mm and H is more than or equal to 1mm. The air quantity and the air guiding speed can be ensured, the occupation of the internal installation space of the cooking device 1 can be reduced to the greatest extent, the problem that the air quantity is small due to the too small depth of the slow flow cavity 50 is solved, and the problems that the air guiding speed is too small, the occupation of the installation space is large, the motor shaft of the driving motor 4 is too long due to the too large depth of the slow flow cavity 50 are solved.

Further, in the present embodiment, an air guiding pipe 8 is connected to the slow flow inlet 511 of the slow flow cover 5, and an air outlet end of the air guiding pipe 8 extends along a central axis direction of the slow flow inlet 511. On the one hand, the length of the induced air pipe 8 can be shortened to a certain extent, and on the other hand, the external air can more smoothly enter the slow flow inlet 511 along the induced air pipe 8. The air duct 8 extends vertically and has a rounded bent portion at a central portion in a longitudinal direction thereof, and a bent angle α of the bent portion is equal to or greater than 90 °. The induced air pipe 8 is designed into a bending structure, compared with a straight pipe, the internal installation space of the cooking device 1 can be effectively utilized, and the resistance of gas flowing along the induced air pipe 8 can be reduced by designing the bent angle of the induced air pipe 8 as above, so that the smoothness of induced air paths is ensured. In this embodiment, the mouth edge of the slow flow inlet 511 preferably extends outward along the circumferential direction to form a joint 5111, so as to facilitate connection of the air guiding pipe 8 to the slow flow inlet 511, as shown in fig. 9.

Further, in this embodiment, as shown in fig. 4, 6 and 8, a second fan blade 32 is further disposed in the inner container 10, and the second fan blade 32 is disposed coaxially with the first fan blade 31 and both are located together in a hot air chamber 70 surrounded by a hot air baffle 7 and a side where the first side wall 101 is located, wherein the hot air baffle 7 has a hot air inlet 71 facing the second fan blade 32 and a hot air outlet 72 surrounding the hot air inlet 71. The introduced gas can be premixed with the original gas in the inner container 10 in the hot air chamber 70, and can be introduced into the inner cavity of the inner container 10 under the combined action of the centrifugal forces of the first fan blade 31 and the second fan blade 32, so that the air induction efficiency is further improved. Preferably, the first fan blade 31 and the second fan blade 32 are formed as a single piece (in this embodiment, the single piece is the impeller 3), and the fan comprises a base plate 30 centered on a fan shaft 41 of each fan blade, wherein the first fan blade 31 is formed by arranging first blades 311 on one surface of the base plate 30 at intervals in the circumferential direction, and the second fan blade 32 is formed by arranging second blades 321 on the other surface of the base plate at intervals in the circumferential direction. Therefore, the first fan blade 31 and the second fan blade 32 can be simple in structure, and driving and controlling of the first fan blade and the second fan blade and installation of the first fan blade and the second fan blade in the cooking device 1 can be conveniently realized.

The term "fluid communication" as used herein refers to a spatial positional relationship between two components or parts (hereinafter collectively referred to as a first part and a second part, respectively), that is, a fluid (gas, liquid, or a mixture of both) can flow along a flow path from the first part to the second part or/and be transported to the second part, and may be directly communicated between the first part and the second part, or may be indirectly communicated between the first part and the second part through at least one third party, and the third party may be a fluid channel such as a pipe, a channel, a conduit, a flow guide, a hole, a groove, or the like, or may be a chamber allowing a fluid to flow through, or a combination of the above.

Claims (18)

1. A cooking apparatus comprising:

a liner (10) having an opening;

an air inlet (102) formed in a first side wall (101) of the liner (10);

a first fan blade (31) which is installed in the inner container (10) and is opposite to the first side wall (101) and is used for driving gas to enter the inner container (10) from the air inlet (102);

characterized by further comprising:

the slow flow cavity (50) is provided with a slow flow inlet (511) and a slow flow outlet (512), wherein the slow flow inlet (511) is communicated with the outside, and the slow flow outlet (512) is communicated with the air inlet (102) through a first fluid channel.

2. Cooking device according to claim 1, wherein the slow flow outlet (512) of the slow flow chamber (50) is in communication with the air inlet (102) of the inner container (10).

3. Cooking device according to claim 2, wherein said slow flow chamber (50) is arranged outside said inner container (10).

4. A cooking device according to claim 3, wherein a slow flow cover (5) is covered on the outer surface of the first side wall (101) of the inner container (10) at the position where the air inlet (102) is located to form the slow flow cavity (50), the slow flow inlet (511) is formed on the slow flow cover (5), and the cover opening of the slow flow cover (5) forms the slow flow outlet (512).

5. Cooking device according to claim 4, wherein the slow flow cover (5) comprises a truncated cone-shaped cover body (51), the cover body (51) and the outer surface of the first side wall (101) form the slow flow cavity (50), and the cross section size of the cover body (51) increases gradually from outside to inside relative to the inner container (10) to form an inner guide ring surface (54) on the inner side surface of the cover body.

6. Cooking device according to claim 4 or 5, wherein the horizontal projection of the slow flow inlet (511) of the slow flow chamber (50) on the first side wall (101) is offset from the air inlet (102).

7. The cooking device according to claim 6, wherein the slow flow inlet (511) is provided on a wall of the slow flow cover (5) opposite to the air inlet (102), and a guide boss (53) opposite to the air inlet (102) is provided on an inner side surface of the slow flow cover.

8. Cooking device according to claim 7, wherein the blade shaft (41) of the first blade (31) is sequentially inserted into the shaft hole (531) of the air inlet (102) and the guide boss (53).

9. The cooking device according to claim 8, wherein the shaft hole (531) is formed in a wall of the slow flow cover (5) opposite to the air inlet (102),

the cover wall of the slow flow cover (5) at the hole edge of the shaft hole (531) is concaved inwards along the circumferential direction to form a disc-shaped groove (533), a disc-shaped flow guide boss (53) is formed on the inner side surface of the slow flow cover (5), the driving motor (4) of the first fan blade (31) is arranged outside the slow flow cover (5) through the motor bracket (42), the motor bracket (42) is provided with a shaft seat (421) for the motor shaft of the driving motor (4) to penetrate through, the shaft seat (421) is cylindrical and is directly embedded in the groove (533), and a sealing ring (6) is arranged between the shaft seat and the groove along the circumferential direction.

10. Cooking device according to claim 8, wherein the flow guiding boss (53) is shaped like a truncated cone and is centered on the fan blade axis (41) of the first fan blade (31), the cross section of the flow guiding boss (53) increases gradually from inside to outside, and the end surface and the side surface thereof are smoothly transited along the circumferential direction so that the side surface thereof forms an outer flow guiding ring surface (532) along the circumferential direction.

11. The cooking device according to claim 10, wherein the maximum diameter of the outer guide ring surface (532) is smaller than or equal to the diameter of the air inlet (102), and the included angle β between the outer guide ring surface (532) and the horizontal direction is: beta is more than or equal to 30 degrees and less than or equal to 80 degrees.

12. Cooking device according to claim 8, wherein the depth H of the slow flow chamber (50) in the direction of the pitch of the slow flow inlet (511) to the slow flow outlet (512) is equal to the diameter D of the slow flow inlet (511) of the slow flow chamber (50) ₁ The following relationship is satisfied: 5mm is less than or equal to 0.3D ₁ mm≤H≤D ₁ mm。

13. Cooking device according to any one of claims 1 to 5, wherein the first side wall (101) is a side wall adjacent to the opening of the inner container (10).

14. Cooking device according to claim 6, wherein the slow flow inlet (511) of the slow flow cover (5) is connected with an air guiding pipe (8), and the air outlet end of the air guiding pipe (8) extends along the central axis direction of the slow flow inlet (511).

15. Cooking device according to any one of claims 1 to 5, wherein a second fan blade (32) is further arranged in the inner container (10), the second fan blade (32) and the first fan blade (31) are coaxially arranged, and are located in a hot air chamber (70) surrounded by a hot air baffle (7) and a side where the first side wall (101) is located, wherein the hot air baffle (7) is provided with a hot air inlet (71) opposite to the second fan blade (32) and a hot air outlet (72) surrounded around the hot air inlet (71).

16. The cooking device according to claim 15, wherein the first blade (31) and the second blade (32) are integrally formed, and comprise a base plate (30) centered on a blade axis (41) of each blade, wherein the first blade (31) is formed by arranging first blades (311) on one side surface of the base plate (30) at intervals in the circumferential direction, and the second blade (32) is formed by arranging second blades (321) on the other side surface of the base plate.

17. A cooking all-in-one machine, characterized in that a cooking device according to any one of claims 1 to 16 is applied.

18. An integrated hob with a cooking all-in-one machine according to claim 17, characterized in, that a hob (2) is arranged on the cooking device (1).