Strong exhaust device and cooking equipment

Abstract

The utility model belongs to the technical field of kitchen appliances, and discloses a strong exhaust device and cooking equipment. The cooking equipment comprises a machine body, a cooking cavity is formed in the machine body, the cooking cavity is provided with an air inlet and an air outlet, the forced exhaust device comprises an air blowing pipeline, a pipeline on-off structure, a detection assembly and an air blower, the air blowing pipeline is communicated with the air inlet and used for blowing air into the cooking cavity, and the air blowing pipeline comprises a hose section; the pipeline on-off structure comprises a synchronous motor and a clamping assembly, an output shaft of the synchronous motor is in transmission connection with the clamping assembly so as to drive the clamping assembly to extrude the hose section, the detection assembly is in communication connection with the pipeline on-off structure, and the detection assembly is used for detecting the sealing state of the hose section; the air blower is communicated with the air blowing pipeline, located on the side, away from the air inlet, of the hose section, in communication connection with the detection assembly and used for blowing air into the air blowing pipeline from the outside of the machine body. The flowing direction of the blown-in airflow is opposite to that of the leaked steam, so that the effect of sealing the hose section is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to a strong exhaust device and cooking equipment. Background Art

[0002] After the steaming function of a steamer or steam-bake combination machine is over, a large amount of high-temperature steam will remain in the cavity. When the user opens the door, the steam will spray directly on the user's face, causing burns. Therefore, more and more manufacturers are considering introducing a strong exhaust structure in such cooking appliances. The strong exhaust structure includes a blast duct, which connects the cooking cavity and the outside of the machine body. Before the user opens the door, external air is introduced into the cooking cavity through the blast duct to discharge the steam inside the cooking cavity.

[0003] In order to prevent the steam in the cooking cavity from being discharged through the blast pipe during cooking, the strong exhaust structure can use a clamping component to squeeze the hose to achieve on-off control of the blast pipe. Since the hose has a certain amount of compression, there is a matching error between the clamping component and the hose, which can easily cause the hose to leak and affect the cooking effect. Utility Model Content

[0004] The utility model aims to provide a pipeline on-off structure and cooking equipment, which can avoid the problem that the synchronous motor is stuck and cannot rotate when the deformation of the hose is at the compression limit, reduce the matching accuracy of the component size, and increase the tolerance.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A strong exhaust device is used for a cooking device, the cooking device comprises a body, a cooking cavity is formed in the body, the cooking cavity is provided with an air inlet and an exhaust port, the strong exhaust device comprises:

[0007] an air blast duct, the air blast duct being connected to the air inlet and used for blowing air into the cooking cavity, the air blast duct comprising a hose section;

[0008] A pipeline on-off structure, the pipeline on-off structure comprises a synchronous motor and a clamping assembly, the output shaft of the synchronous motor is drivingly connected to the clamping assembly to drive the clamping assembly to squeeze the hose section;

[0009] A detection component, the detection component is communicatively connected with the pipeline on-off structure, and the detection component is used to detect the sealing state of the hose section;

[0010] A blower is connected to the air blast duct, the blower is located on a side of the hose section away from the air inlet, the blower is communicatively connected to the detection component, and the blower is used to blow air from the outside of the machine body into the air blast duct.

[0011] As an alternative to the above-mentioned strong exhaust device, the detection component includes a detection end, which is located in the air duct and between the pipeline on-off structure and the blower.

[0012] As an alternative to the above-mentioned strong exhaust device, the detection component includes a humidity sensor for detecting the humidity in the air duct;

[0013] And / or, the detection component includes a temperature sensor for detecting the temperature in the air duct.

[0014] As an alternative to the above-mentioned strong exhaust device, the length of the air duct between the detection end and the clamping position of the hose section is 15 mm - 30 mm.

[0015] As an alternative to the above-mentioned strong exhaust device, the air duct includes:

[0016] A connecting pipe with one end connected to the blower and the other end connected to the hose section. The connecting pipe is provided with a mounting hole, and the detection component passes through the mounting hole so that the detection end of the detection component is located inside the connecting pipe;

[0017] A seal is arranged in the mounting hole and sleeved on the detection component to seal the gap between the detection component and the mounting hole.

[0018] As an alternative to the above-mentioned strong exhaust device, the detection component is detachably arranged on the connecting pipe.

[0019] As an alternative to the above-mentioned strong exhaust device, the clamping component includes a first clamping part and a second clamping part arranged oppositely, and the hose section is located between the first clamping part and the second clamping part;

[0020] Define the initial distance between the first clamping part and the second clamping part as L, the maximum stroke of the pipeline on-off structure driving the second clamping part to move as S, the double-layer wall thickness of the hose section as D, and the maximum compression amount of the double-layer wall thickness of the hose section as d, then L - S ≥ D - d.

[0021] As an alternative to the above-mentioned strong exhaust device, the pipeline on-off structure further includes a cam. The output shaft of the synchronous motor is connected to the cam. The clamping component includes a first clamping part and a second clamping part arranged in a first direction, and the hose section is located between the first clamping part and the second clamping part. The cam can push the second clamping part to approach the first clamping part along the first direction to squeeze the hose section.

[0022] As an alternative to the above-mentioned strong exhaust device, the clamping assembly includes a first clamping portion and a second clamping portion which are oppositely arranged. The hose section is located between the first clamping portion and the second clamping portion, and an elastic layer in contact with the hose section is provided on the first clamping portion and / or the second clamping portion;

[0023] And / or, the clamping assembly includes:

[0024] A fixed seat which forms a first clamping portion;

[0025] A second clamping portion which is movably arranged on the fixed seat and can approach or move away from the first clamping portion along a first direction;

[0026] An elastic member which elastically connects the second clamping portion and the fixed seat along the first direction, and the elastic member can drive the second clamping portion to move away from the first clamping portion along the first direction.

[0027] A cooking device includes a body in which a cooking cavity is formed. The cooking cavity is provided with an air inlet and an air outlet, and also includes the above-mentioned strong exhaust device.

[0028] Advantages of the present utility model:

[0029] In the strong exhaust device provided by the present utility model, through the cooperation of the detection component and the blower, when the pipeline on-off structure has poor sealing of the hose section, the blower can be started to blow the air outside the body into the hose section, and the flowing direction of the blown air is opposite to that of the leaked steam, so as to achieve the effect of sealing the hose section.

[0030] By setting the cooperation of the detection component and the blower to solve the problem of micro air leakage, the precision requirements for each component in the pipeline on-off structure can be reduced. In the pipeline on-off structure, the cam and the second clamping portion preferably adopt lower deviations, and the dimension between the first clamping portion and the synchronous motor preferably adopts upper deviations to eliminate the problem of synchronous motor stalling.

[0031] The cooking device provided by the present utility model adopts the above-mentioned strong exhaust device, the hose section has good sealing effect, and the precision requirements for each component in the pipeline on-off structure are low, which is beneficial to reducing costs and improving tolerance. Description of the drawings

[0032] Figure 1 is the front view of the cooking device provided by Embodiment 1 of the present utility model;

[0033] Figure 2 is the structural schematic diagram of the cooking device provided by Embodiment 1 of the present utility model;

[0034] Figure 3It is a schematic structural diagram of the on-off structure between a hose section and a pipeline in the uncompressed state provided by the first embodiment of the present utility model;

[0035] Figure 4 It is a schematic structural diagram of the on-off structure between a hose section and a pipeline in the compressed state provided by the first embodiment of the present utility model;

[0036] Figure 5 It is a schematic structural diagram of the on-off structure between a hose section and a pipeline in the uncompressed state provided by the second embodiment of the present utility model.

[0037] In the figure:

[0038] 10. Machine shell; 101. Air inlet; 102. Air outlet; 20. Inner tank; 30. Control panel; 40. Strong exhaust device; 41. Blower; 42. Blower duct; 421. Connecting pipe; 422. Hose section; 43. Pipeline on-off structure; 431. Fixed seat; 4311. Bottom plate; 4312. First clamping part; 4313. Rib plate; 4314. Guide part; 4315. Guide post; 432. Second clamping part; 4321. Guide hole; 433. Cam; 434. Elastic member; 435. Synchronous motor; 436. Elastic layer; 44. Exhaust pipe; 45. Detection component; 50. Steam generating device. Detailed implementation manners

[0039] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. Additionally, it should be noted that for the convenience of description, only the parts related to the present utility model rather than all the structures are shown in the drawings.

[0040] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0041] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0042] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0043] Embodiment 1

[0044] This embodiment provides a cooking device, which can be a cooking device with the function of steaming food materials such as a steam oven or a steam convection oven.

[0045] As Figure 1 and Figure 2 shown, the cooking device includes a body, a steam generating device 50 and a strong exhaust device 40. A cooking cavity is formed in the body, and an air inlet and an exhaust port are provided in the cooking cavity; the steam generating device 50 is used to provide steam, and the steam generating device 50 includes a steam generator and a steam pipeline. The steam generator is connected to a water source (such as a water storage tank or a faucet) and the steam pipeline, and the steam pipeline is communicated with the cooking cavity so as to introduce steam into the cooking cavity; the strong exhaust device 40 is communicated with the outside of the body and the air inlet, and the strong exhaust device 40 is used to blow the gas outside the body into the cooking cavity to discharge the steam in the cooking cavity from the exhaust port.

[0046] After the steaming program ends, the strong exhaust device 40 is started to convey the gas outside the body into the cooking cavity. On the one hand, the gas outside the body can reduce the temperature in the cooking cavity, condense the moisture in the steam, and reduce the steam content in the cooking cavity. On the other hand, the gas outside the body can forcibly discharge the steam in the cooking cavity out of the body through the exhaust port, thereby further reducing the steam in the cooking cavity and preventing the steam from directly spraying onto the user when the user opens the cooking cavity, and preventing the user from being scalded.

[0047] As Figure 1As shown in the figure, the body includes a housing 10 and an inner container 20 disposed within the housing 10. A cooking cavity is formed within the inner container 20, and an air inlet and an exhaust port are provided on the inner container 20. An air inlet 101 and an air outlet 102 are provided on the body. The air inlet 101 is connected to a strong exhaust device 40, and the air outlet 102 is connected to the exhaust port on the cooking cavity. After the strong exhaust device 40 is started, the gas outside the body sequentially passes through the air inlet 101, the strong exhaust device 40, and the air inlet 21 and enters the cooking cavity; the gas in the cooking cavity sequentially passes through the exhaust port and the air outlet 102 and is discharged outside the body.

[0048] In this embodiment, the strong exhaust device 40 includes a blower 41, a blower duct 42, an exhaust pipe 44, and a pipeline on-off structure 43. The blower duct 42 connects the air inlet 101 and the air inlet, and the blower 41 is connected to the blower duct 42 to drive the air flow outside the body to enter the cooking cavity through the blower duct 42; the exhaust pipe 44 connects the exhaust port and the air outlet 102 and is used for discharging the gas in the cooking cavity. The blower duct 42 includes a flexible hose section 422, and the pipeline on-off structure 43 cooperates with the flexible hose section 422. By squeezing the flexible hose section 422, the closing and opening of the flexible hose section 422 are realized, so as to quickly and sensitively start and stop the strong exhaust function, and control the steam content in the cooking cavity to be maintained at the required value, and the steam content will not fluctuate greatly due to slow movement.

[0049] As Figure 3 and Figure 4 shown in the figure, the pipeline on-off structure 43 includes a clamping assembly and a driving assembly. The clamping assembly includes a first clamping portion 4312 and a second clamping portion 432 arranged along a first direction. The flexible hose section 422 is located between the first clamping portion 4312 and the second clamping portion 432; the driving assembly is used to drive the clamping assembly to squeeze the flexible hose section 422 so that the inner walls of the flexible hose section 422 fit together to achieve a sealing effect.

[0050] Affected by the processing accuracy, position accuracy of the clamping assembly and the accuracy of the driving assembly, when the flexible hose section 422 is sealed by squeezing, the problem of poor sealing of the flexible hose section 422 is likely to occur, resulting in steam leaking from the blower duct 42 to the outside of the body during the operation of the cooking equipment, affecting the cooking effect and the user experience.

[0051] To solve the above problems, the strong exhaust device 40 further includes a detection component 45. The detection component 45 is respectively communicatively connected to the pipeline on-off structure 43 and the blower 41. The detection component 45 is used to detect the sealing effect of the flexible hose section 422 after the pipeline on-off structure 43 squeezes and seals the flexible hose section 422. If it is detected that the flexible hose section 422 is poorly sealed, the blower 41 blows air from the outside of the body into the blower duct 42, so that the flowing direction of the blown air is opposite to that of the leaked steam, and the external air flow is blown to block the diffusion of the steam to the outside of the body, so as to achieve the purpose of sealing the flexible hose section 422.

[0052] In this embodiment, through the cooperation of the detection component 45 and the blower 41, when the pipeline on-off structure 43 has poor sealing of the hose section 422, the blower 41 can be started to blow the external air flow of the machine body into the hose section 422, and the flowing direction of the blown air flow is opposite to that of the leaked steam, so as to achieve the effect of sealing the hose section 422.

[0053] In this embodiment, the driving component includes a synchronous motor 435 and a cam 433. The output shaft of the synchronous motor 435 is connected to the cam 433. After the synchronous motor 435 is started, it can drive the cam 433 to rotate, so as to push the second clamping part 432 to approach the first clamping part 4312 along the first direction through the cam 433, so that the first clamping part 4312 and the second clamping part 432 cooperate to squeeze the hose, thereby realizing the sealing of the hose.

[0054] When the distance between the first clamping part 4312 and the second clamping part 432 is large, such as Figure 3 shown in the figure, the hose is not subjected to extrusion force and is in an expanded state, and the gas can flow in the hose to ensure that after the blower 41 is started, the external gas of the machine body can enter the cooking cavity through the air duct 42 to discharge the steam in the cooking cavity.

[0055] When the synchronous motor 435 drives the cam 433 to rotate, thereby pushing the second clamping part 432 to approach the first clamping part 4312, as Figure 4 shown in the figure, the distance between the second clamping part 432 and the first clamping part 4312 gradually decreases, and the first clamping part 4312 and the second clamping part 432 cooperate to squeeze the hose, so that the inner walls of the hose gradually fit together, thereby achieving the effect of sealing the hose, and further disconnecting the cooking cavity from the air inlet 101 to avoid the leakage of the steam in the cooking cavity through the air duct 42 during cooking.

[0056] In this embodiment, the synchronous motor 435 is used as the power source. The output shaft of the synchronous motor 435 rotates unidirectionally, which can accurately control the rotation speed, is energy-efficient, has a simple structure, and is beneficial to reducing the cost of the cooking equipment; the synchronous motor 435 has a small volume and requires a small installation space, which is beneficial to controlling the size of the cooking equipment; the synchronous motor 435 has low noise, which is beneficial to improving the user experience.

[0057] The cam 433 rotates in the same direction, which can realize the pushing of the cam 433 on the second clamping part 432 and the separation from the second clamping part 432, and there is no need to change the rotation direction of the cam 433 according to the on-off requirement of the hose. The control logic of the driving component is simple and the reaction speed is fast. The cam 433 can push the second clamping part 432 to move by rotating a small angle, realizing the closing of the hose, with a fast reaction, and can quickly and sensitively control the on-off between the cooking cavity and the outside according to the need, so that the steam content in the cooking cavity is always maintained around the required value.

[0058] It is understandable that when the hose is subjected to an external force, its pipe wall has a certain amount of compression. When the cam 433 rotates to the position where its distal end contacts the center point of the second clamping portion 432, if the compression amount of the hose has reached the limit, it is difficult for the cam 433 to continue rotating under the drive of the synchronous motor 435, resulting in the jamming of the synchronous motor 435 and the failure of the pipeline on-off structure 43 to work, with relatively low reliability.

[0059] The deformation amount of the hose is generally 5%-30% of the double wall thickness. Taking the double wall thickness of the hose section 422 as 4 mm as an example, the compression amount of the double wall thickness of the hose section 422 is between 0.2 mm and 1.2 mm, and the compression amount is small. To ensure that when the cam 433 rotates to the position where its top contacts the second clamping portion 432, the hose section 422 can be closed and its deformation amount does not reach the compression limit, the accuracy requirements for the components in the pipeline on-off structure 43 are high, such as the dimensions and shapes of the second clamping portion 432 and the cam 433, the installation positions, etc., with low tolerance and high cost.

[0060] To solve the above problems, in this embodiment, the components of the clamping assembly preferably adopt negative deviations, so that only a slight air leakage phenomenon may occur when the pipeline on-off structure 43 is working, and the situation where the cam 433 cannot rotate smoothly for one circle and the synchronous motor 435 is jammed and stalled will not occur, so as to reduce the accuracy requirements for the components in the pipeline on-off structure 43 and thus reduce the cost. On this basis, the detection assembly 45 and the blower 41 are used in cooperation to solve the problem of slight air leakage. By blowing the air outside the body, a reverse effect is given to the steam leaking in the hose section 422, thereby solving the air leakage problem.

[0061] Define the initial distance between the first clamping portion 4312 and the second clamping portion 432 as L, the maximum stroke of the pipeline on-off structure 43 driving the second clamping portion 432 to move as S, the double wall thickness of the hose section 422 as D, and the maximum compression amount of the double wall thickness of the hose section 422 as d. Then L - S ≥ D - d. Through the above setting, when the first clamping portion 4312 and the second clamping portion 432 cooperate to clamp the hose section 422, the wall thickness of the hose section 422 may not be compressed or not compressed to the maximum compression amount, so as to avoid the situation of the synchronous motor 435 being stalled, and only a slight air leakage phenomenon may occur when the pipeline on-off structure 43 is working.

[0062] It should be noted here that the initial distance between the first clamping portion 4312 and the second clamping portion 432 refers to the distance between the second clamping portion 432 and the first clamping portion 4312 when the second clamping portion 432 is not subjected to the thrust of the cam 433, that is, the maximum distance between the first clamping portion 4312 and the second clamping portion 432, and this maximum distance is greater than the outer diameter of the hose section 422.

[0063] Optionally, the blower 41 is a variable-speed blower 41. Since the inner wall of the hose section 422 is in a substantially fitting state under the squeezing action of the pipeline on-off structure 43, even if there is an air leakage, the effective flow area of the hose section 422 is small and the amount of leaked steam is small. Therefore, when starting the blower 41 to blow in external air flow to act on the leaked steam, the required air flow rate is relatively small. Using a variable-speed blower 41 can start at a relatively low wind speed when air flow needs to be blown in for sealing, avoiding waste of electric energy and reducing noise at the same time.

[0064] To detect the sealing effect of the hose section 422, the detection component 45 includes a detection end located in the air duct 42 and between the pipeline on-off structure 43 and the blower 41. By arranging the detection end between the pipeline on-off structure 43 and the blower 41, and the detection end is located downstream of the leaked steam position in the air duct 42, so as to better detect the sealing effect of the hose section 422.

[0065] In this embodiment, the detection component 45 includes a humidity sensor. At least the detection end of the humidity sensor is located in the air duct 42 and between the pipeline on-off structure 43 and the blower 41. The humidity sensor is used to detect the humidity information in the air duct 42 at the location where it is located to judge the sealing condition of the hose section 422.

[0066] After the pipeline on-off structure 43 squeezes and seals the hose section 422 through the first clamping portion 4312 and the second clamping portion 432, the humidity information in the air duct 42 is detected by the humidity sensor. If the humidity increases, some steam in the cooking cavity enters the air duct 42 between the pipeline on-off structure 43 and the blower 41 through the hose section 422, resulting in an increase in the humidity in the air duct 42. Thus, it can be judged that there is a problem with the sealing of the hose section 422. Then, by starting the blower 41 to blow in the external air flow of the machine body into the air duct 42, the steam leakage to the outside can be blocked.

[0067] Optionally, the wind speed of the blower 41 is in a direct proportion relationship with the humidity. That is to say, the larger the humidity value detected by the humidity sensor, the worse the sealing effect of the hose section 422. Correspondingly, the larger the wind speed of the blower 41 to block the steam from leaking to the outside; the smaller the humidity value detected by the humidity sensor, the relatively better the sealing effect of the hose section 422. Correspondingly, the smaller the wind speed of the blower 41 to block the steam from leaking to the outside and avoid waste of electric energy.

[0068] In some embodiments, the detection component 45 may include a temperature sensor. At least the detection end of the temperature sensor is located in the air duct 42 and between the pipeline on-off structure 43 and the blower 41. The temperature sensor is used to detect the temperature information in the air duct 42 at the location where it is located to judge the sealing condition of the hose section 422.

[0069] When the pipeline on-off structure 43 squeezes the sealed hose section 422 through the first clamping part 4312 and the second clamping part 432, the temperature information inside the air duct 42 is detected by the temperature sensor. If the temperature rises, some steam in the cooking cavity enters the air duct 42 between the pipeline on-off structure 43 and the blower 41 through the hose section 422, causing the temperature inside the air duct 42 to rise. Thus, it can be determined that there is a problem with the poor sealing of the hose section 422. Furthermore, by starting the blower 41 to blow the external air flow of the machine body into the air duct 42, the steam leakage to the outside can be blocked.

[0070] Optionally, the wind speed of the blower 41 is in a direct proportional relationship with the temperature. That is to say, the larger the temperature value detected by the temperature sensor, the worse the sealing effect of the hose section 422. Correspondingly, the larger the wind speed of the blower 41, to block the steam from leaking to the outside; the smaller the temperature value detected by the temperature sensor, the relatively better the sealing effect of the hose section 422. Correspondingly, the smaller the wind speed of the blower 41, to block the steam from leaking to the outside and avoid wasting electric energy.

[0071] To ensure that the detection component 45 can detect the steam leakage in time, the length of the air duct 42 between the detection end of the detection component 45 and the clamping position of the hose section 422 is 15 mm - 30 mm, so that there is a certain difference between the humidity or temperature at the position where the detection end is located and the humidity or temperature information at the clamping position of the hose section 422. It is beneficial for the change of the detection value of the detection component 45 to be relatively obvious after the steam leakage, so as to be able to judge whether the steam leaks and thus start the blower 41 in time. The typical but non-limiting data of the length of the air duct 42 between the detection end of the detection component 45 and the clamping position of the hose section 422 are as follows: 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 25 mm, 26 mm, 27 mm, 28 mm, 29 mm, 30 mm.

[0072] In this embodiment, the air duct 42 further includes a connecting pipe 421. One end of the connecting pipe 421 is connected to the outlet of the blower 41, and the other end is connected to the hose section 422. An installation hole is provided on the connecting pipe 421, and the detection component 45 is inserted through the installation hole so that the detection end of the detection component 45 can extend into the connecting pipe 421 to detect the humidity or temperature inside the connecting pipe 421.

[0073] To avoid the air pressure loss inside the air duct 42 and the reduction of the strong exhaust efficiency caused by the air leakage at the installation hole, a sealing member is further provided in the installation hole. The sealing member is sleeved on the detection component 45 to seal the gap between the detection component 45 and the inner wall of the installation hole, so that the detection component 45 is hermetically connected to the connecting pipe 421, avoiding the leakage of the air flow inside the air duct 42 through the installation hole, and thus avoiding the air pressure loss.

[0074] Optionally, the seal can be a sealing ring, the outer circumference of the sealing ring is pressed against the inner wall of the mounting hole, the inner circumference of the sealing ring is pressed against the detection component 45, and the sealing ring is clamped between the mounting hole and the detection component 45 to achieve a sealing effect.

[0075] Optionally, a sealing groove may be provided on the inner wall of the mounting hole, and part of the sealing member is embedded in the sealing groove to improve the position stability of the sealing member, thereby ensuring the sealing effect.

[0076] In this embodiment, the detection assembly 45 is detachably connected to the connecting pipe 421, which facilitates the installation and replacement of the detection assembly 45. Specifically, the detection assembly 45 is fixed to the connecting pipe 421 by a fastener, which may be a screw.

[0077] In this embodiment, the clamping assembly includes a fixed base 431, the fixed base 431 includes a base plate 4311 and a vertical plate vertically connected to the base plate 4311, the vertical plate forms a first clamping portion 4312, the second clamping portion 432 is arranged on the base plate 4311, and is arranged along the first direction with the vertical plate, the cam 433 is located on the side of the second clamping portion 432 away from the vertical plate, and can abut against the second clamping portion 432 so as to push the second clamping portion 432 close to the first clamping portion 4312 to squeeze the hose section 422.

[0078] Optionally, the vertical plate and the bottom plate 4311 are integrally formed to reduce the number of parts of the clamping assembly.

[0079] In order to realize the automatic reset of the second clamping part 432, the pipeline on-off structure 43 further includes an elastic member 434, which elastically connects the fixing seat 431 and the second clamping part 432 along the first direction, and the direction of the elastic force of the elastic member 434 on the second clamping part 432 is away from the first clamping part 4312 along the first direction, so as to drive the second clamping part 432 away from the first clamping part 4312 along the first direction. When the synchronous motor 435 drives the cam 433 to rotate, so that the far end of the cam 433 is separated from the second clamping part 432, or the second clamping part 432 is no longer pushed by the cam 433 or the thrust is reduced, the cam 433 can be moved away from the first clamping part 4312 under the action of the elastic member 434, so that the distance between the first clamping part 4312 and the second clamping part 432 is increased, and the hose section 422 is not squeezed.

[0080] Optionally, the second elastic member 434 is a spring, which has a simple structure and low cost.

[0081] In order to make the second clamping portion 432 bear force more evenly, the number of elastic members 434 is set to two, and elastic members 434 are provided on opposite sides of the second clamping portion 432 to make the second clamping portion 432 more stable during movement.

[0082] To prevent the movement direction of the second clamping part 432 from deviating due to the bending of the elastic part 434, the fixed seat 431 further includes a positioning groove, and at least part of the elastic part 434 is located in the positioning groove to restrict the deformation direction of the elastic part 434, thereby preventing the movement direction of the second clamping part 432 from deviating and further preventing the second clamping part 432 from jamming.

[0083] During the rotation of the cam 433, there is a tangential force perpendicular to the first direction in the force provided by the cam 433 to the second clamping part 432, which easily causes the second clamping part 432 to tilt and jam during movement. To solve the above problems, a guiding structure is provided between the fixed seat 431 and the second clamping part 432. The guiding structure can prevent the movement direction of the second clamping part 432 from skewing, thereby preventing the second clamping part 432 from jamming and ensuring the realization of the function of the pipeline on-off structure 43.

[0084] Specifically, the guiding structure includes a first sliding part and a second sliding part that are slidably matched in the first direction. The fixed seat 431 is provided with the first sliding part, and the second clamping part 432 is provided with the second sliding part. The guiding is realized through the cooperation of the first sliding part and the second sliding part to guide the movement of the second clamping part 432, prevent the second clamping part 432 from jamming, and ensure the realization of the function of the pipeline on-off structure 43.

[0085] In this embodiment, the first sliding part is a guiding column 4315 provided on the fixed seat 431, and the second sliding part is a guiding hole 4321 provided on the second clamping part 432. The guiding hole 4321 extends in the first direction, and the guiding column 4315 slidably penetrates through the guiding hole 4321 to realize guiding.

[0086] In other embodiments, the first sliding part can be the guiding hole 4321. Correspondingly, the second sliding part is the guiding column 4315, which can also provide guiding for the sliding of the second clamping part 432.

[0087] In other embodiments, one of the first sliding part and the second sliding part can be a sliding rail extending in the first direction, and the other is a slider. The slider is slidably matched with the sliding rail; or, one of the first sliding part and the second sliding part is a guiding rod extending in the first direction, and the other is a through hole, and the guiding rod penetrates through the through hole.

[0088] To improve the movement accuracy and position accuracy of the second clamping part 432, the fixed seat 431 further includes two guiding parts 4314 that are opposite and spaced apart. A sliding channel is formed between the two guiding parts 4314, and at least part of the second clamping part 432 is located in the sliding channel. Through the cooperation of the second clamping part 432 and the sliding channel, on the one hand, it can guide the movement of the second clamping part 432 and restrict the movement direction of the second clamping part 432, and on the other hand, it can also play a positioning role to ensure the accurate installation position of the second clamping part 432 on the fixed seat 431.

[0089] In order to simplify the structure of the fixing seat 431, a positioning groove is formed in the guide portion 4314. In this arrangement, the guide portion 4314 and the positioning groove are integrated into one body, which is conducive to simplifying the structure of the fixing seat 431 and reducing the cost.

[0090] Specifically, a rib plate 4313 is provided on the bottom plate 4311. The rib plate 4313 is generally in a U-shaped structure, the opening of the U-shaped structure faces the first clamping portion 4312, and the cam 433 is located in the U-shaped structure; both ends of the rib plate 4313 are bent toward the inside of the U-shaped structure to form a guide portion 4314. This structure, on the one hand, facilitates the forming of the guide portion 4314 and the positioning groove, and is easy to process; on the other hand, it can enclose the installation space of the second clamping portion 432 and the cam 433, and facilitates the installation and positioning of the second clamping portion 432 and the cam 433.

[0091] In this embodiment, the vertical plate and the guide portion 4314 are arranged at an interval, and a placement space for the hose segment 422 is formed between the vertical plate and the guide portion 4314, which has the effect of positioning the hose segment 422.

[0092] In order to limit the extreme position of the second clamping part 432 under the push of the cam 433, the second clamping part 432 includes a force-bearing end and an extrusion end, the force-bearing end is used to contact the cam 433, the extrusion end is connected to the side of the force-bearing end away from the cam 433, the size of the force-bearing end along the second direction is greater than the size of the extrusion end along the second direction, and the first direction and the second direction are parallel to the plane where the bottom plate 4311 is located and perpendicular to each other. Among them, the extrusion end is located between the two guide parts 4314, and the two ends of the force-bearing end along the second direction respectively extend to the side of the corresponding guide part 4314 facing the cam 433, and are connected or abutted with the elastic member 434.

[0093] When the cam 433 pushes the second clamping portion 432 to the extreme position, the extrusion end is located between the two guide portions 4314 and flattens the hose section 422 onto the first clamping portion 4312; the force-bearing end can abut against or be spaced apart from the guide portion 4314, and the guide portion 4314 limits the second clamping portion 432 from continuing to move toward the first clamping portion 4312, so as to prevent the deformation of the hose section 422 from exceeding its compression limit, thereby preventing the synchronous motor 435 from getting stuck.

[0094] To improve the closing effect on the hose section 422, two protrusions are spaced apart on the first clamping portion 4312, and the extrusion end can extend between the two protrusions. When the hose section 422 is extruded, the hose section 422 can be bent and clamped better under the cooperation of the protrusions and the extrusion end, thereby improving the closing effect on the hose section 422. A groove is formed between the two protrusions, and the extrusion end can extend into the groove. On the one hand, it can provide a guiding effect on the cooperation between the first clamping portion 4312 and the second clamping portion 432. On the other hand, it can cause the hose section 422 to be bent twice, resulting in a better closing effect on the hose section 422.

[0095] Optionally, the width of the groove gradually increases in the direction close to the second clamping portion 432, and the shape of the extrusion end is adapted to the shape of the groove. That is, the width of the open end of the groove is large, and the width of the bottom end of the groove is small, which is beneficial for the extrusion end to extend into the groove.

[0096] In some embodiments, the pipeline on-off structure 43 may not be provided with the second elastic member 434. When the distal end of the cam 433 disengages from the second clamping portion 432 and the blower 41 is started, the hose section 422 can automatically expand and reset under the action of the gas therein, and the cooking cavity can also be communicated with the air inlet 101.

[0097] In this embodiment, the fixed seat 431 further includes a cover plate. The cover plate is arranged above the bottom plate 4311. The hose section 422 can be located between the cover plate and the bottom plate 4311. The cover plate can limit the hose section 422 to prevent the hose section 422 from moving up and down, resulting in the clamping failure of the pipeline on-off structure 43 on the hose section 422. The cover plate, the bottom plate 4311 and the rib plate 4313 cooperate to enclose a cavity. The cam 433 and the second clamping portion 432 are located in the cavity, and the synchronous motor 435 is arranged on the cover plate and located outside the cavity.

[0098] In this embodiment, the machine shell 10 includes a housing and a machine door rotatably arranged on the front side of the housing. The bottom end of the machine door is rotatably connected to the machine shell 10, and the machine door can be flipped relative to the housing to open or close the access opening. Figure 1 As shown in combination, the machine body further includes a control panel 30. The control panel 30 is arranged above the front side of the machine shell 10. The control panel 30 is used for interacting with the user to control the operation and start / stop of the cooking device. To avoid the control panel 30 interfering with the rotation of the machine door, there is an assembly gap between the control panel 30 and the machine shell 10. This assembly gap forms the air inlet 101 and the air outlet 102 to avoid opening holes in the machine shell 10 and affecting the strength of the machine shell 10.

[0099] In addition, by arranging the air inlet 101 and the air outlet 102 on the front side of the body, it can also ensure that when the cooking device is embedded in the kitchen cabinet, both the air inlet 101 and the air outlet 102 are located outside the cabinet, so that the gas introduced into the cooking cavity through the strong exhaust device 40 is the gas outside the cabinet, avoiding introducing the gas in the closed cabinet into the cooking cavity, which is cleaner and more hygienic. In addition, the steam in the cooking cavity is discharged to the outside of the cabinet, preventing it from entering the cabinet and causing mildew or corrosion of the cabinet.

[0100] Embodiment 2

[0101] This embodiment provides a cooking device, which is further improved on the basis of Embodiment 1.

[0102] To avoid the situation of the synchronous motor 435 being stuck and blocked due to design or installation errors, as Figure 5 shown, an elastic layer 436 is provided on the side of the second clamping portion 432 facing the first clamping portion 4312. The elastic layer 436 is used to contact the hose section 422. The elastic layer 436 can be in flexible contact with the hose section 422, avoiding damage to the hose section 422 and improving the service life of the hose section 422. In addition, the elastic layer 436 can deform after being squeezed, increasing the allowable fitting error of the pipeline on-off structure 43, being able to avoid the synchronous motor 435 from being stuck, and ensuring the smooth operation of the pipeline on-off structure 43.

[0103] Optionally, the critical force required for the elastic layer 436 to deform is greater than the critical force required for the hose section 422 to deform. Exemplarily, the elastic modulus of the elastic layer 436 is greater than the elastic modulus of the hose section 422. With this design, when the first clamping portion 4312 and the second clamping portion 432 cooperate to squeeze the hose section 422, the hose section 422 deforms prior to the elastic layer 436. When the deformation amount of the hose section 422 reaches a certain compression amount or its compression limit, the elastic layer 436 deforms, enabling the second clamping portion 432 to further move towards the first clamping portion 4312 to make way for the distal end of the cam 433 to disengage from the center point position of the second clamping portion 432, ensuring that the cam 433 can rotate smoothly for one full circle, thereby avoiding the synchronous motor 435 from being stuck.

[0104] Optionally, the elastic layer 436 can be made of elastic materials such as rubber or silica gel, as long as it is ensured that the critical force required for the elastic layer 436 to deform is greater than the critical force required for the hose section 422 to deform. This embodiment does not make any restrictions.

[0105] In some embodiments, the elastic layer 436 can be provided only on the side of the first clamping portion 4312 facing the second clamping portion 432.

[0106] In some embodiments, elastic layers 436 are provided on the side of the first clamping portion 4312 facing the second clamping portion 432 and on the side of the second clamping portion 432 facing the first clamping portion 4312, ensuring that the cam 433 can rotate smoothly for one full turn.

[0107] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A strong exhaust device for a cooking device, the cooking device comprising a body, a cooking cavity formed in the body, the cooking cavity being provided with an air inlet and an exhaust port, characterized in that: The strong exhaust device comprises: an air blast duct (42), the air blast duct (42) being connected to the air inlet and used for blowing air into the cooking cavity, the air blast duct (42) comprising a hose section (422); A pipeline on-off structure (43), the pipeline on-off structure (43) comprising a synchronous motor (435) and a clamping assembly, wherein an output shaft of the synchronous motor (435) is drivingly connected to the clamping assembly to drive the clamping assembly to squeeze the hose section (422); a detection component (45), the detection component (45) being communicatively connected to the pipeline on-off structure (43), the detection component (45) being used to detect a sealing state of the hose section (422); A blower (41) is connected to the air blast duct (42). The blower (41) is located on a side of the hose section (422) away from the air inlet. The blower (41) is communicatively connected to the detection component (45). The blower (41) is used to blow air from the outside of the machine body into the air blast duct (42).

2. The strong exhaust device according to claim 1, characterized in that: The detection component (45) comprises a detection end, which is located in the air blast duct (42) and between the pipeline on-off structure (43) and the air blower (41).

3. The strong exhaust device according to claim 2, characterized in that: The detection component (45) comprises a humidity sensor, and the humidity sensor is used to detect the humidity in the air blast duct (42); And / or, the detection component (45) comprises a temperature sensor, and the temperature sensor is used to detect the temperature inside the blast duct (42).

4. The strong exhaust device according to claim 2, characterized in that: The length of the air blast duct (42) between the detection end and the clamping position of the hose section (422) is 15 mm-30 mm.

5. The strong exhaust device according to any one of claims 1 to 4, characterized in that: The blast duct (42) comprises: a connecting pipe (421), one end of the connecting pipe (421) being connected to the blower (41), and the other end of the connecting pipe (421) being connected to the hose section (422), the connecting pipe (421) being provided with a mounting hole, the detection component (45) being passed through the mounting hole so that the detection end of the detection component (45) is located in the connecting pipe (421); A sealing member is arranged in the mounting hole and sleeved on the detection component (45) to seal a gap between the detection component (45) and the mounting hole.

6. The strong exhaust device according to claim 5, characterized in that: The detection component (45) is detachably mounted on the connecting pipe (421).

7. The strong exhaust device according to any one of claims 1 to 4, characterized in that: The clamping assembly comprises a first clamping portion (4312) and a second clamping portion (432) which are arranged opposite to each other, and the hose section (422) is located between the first clamping portion (4312) and the second clamping portion (432); The initial distance between the first clamping part (4312) and the second clamping part (432) is defined as L, the maximum stroke of the pipeline on-off structure (43) driving the second clamping part (432) to move is defined as S, the double-layer wall thickness of the hose section (422) is defined as D, and the maximum compression amount of the double-layer wall thickness of the hose section (422) is defined as d, then LS≥Dd.

8. The strong exhaust device according to any one of claims 1 to 4, characterized in that: The pipeline on-off structure (43) further comprises a cam (433), the output shaft of the synchronous motor (435) is connected to the cam (433), the clamping assembly comprises a first clamping portion (4312) and a second clamping portion (432) arranged along a first direction, the hose section (422) is located between the first clamping portion (4312) and the second clamping portion (432), and the cam (433) can push the second clamping portion (432) along the first direction to approach the first clamping portion (4312) so as to squeeze the hose section (422).

9. The strong exhaust device according to any one of claims 1 to 4, characterized in that: The clamping assembly comprises a first clamping portion (4312) and a second clamping portion (432) which are arranged opposite to each other, the hose section (422) is located between the first clamping portion (4312) and the second clamping portion (432), and the first clamping portion (4312) and / or the second clamping portion (432) are provided with an elastic layer (436) in contact with the hose section (422); And / or, the clamping assembly comprises: A fixing seat (431), wherein the fixing seat (431) is formed with a first clamping portion (4312); A second clamping portion (432) is movably disposed on the fixing seat (431), and the second clamping portion (432) can approach or move away from the first clamping portion (4312) along a first direction; An elastic member (434) elastically connects the second clamping portion (432) and the fixing seat (431) along a first direction, and the elastic member (434) can drive the second clamping portion (432) to move away from the first clamping portion (4312) along the first direction.

10. A cooking device, comprising a body, wherein a cooking cavity is formed in the body, and the cooking cavity is provided with an air inlet and an exhaust port, wherein: It also includes a strong exhaust device as described in any one of claims 1-9.

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