Chef machine with good stability

Abstract

A cook machine with good stability relates to the technical field of cook machines and comprises an air pump, a shell, a base, a motor, a stirring mechanism and a control system. The base is provided with a supporting sleeve, and a vacuum sucker is arranged in the supporting sleeve and connected with an air pump through an exhaust pipeline. The control system controls the clutch to be connected and disconnected according to the feedback of the pressure sensor: the clutch is closed at the starting stage, and the air pump is driven to vacuumize by utilizing the low-rotating-speed surplus power of the motor, so that the suction cup adsorbs the table top; when the negative pressure reaches a threshold value, the clutch is disconnected, and the motor focuses on driving stirring. After shutdown, the electric control valve is opened to release pressure, and equipment is convenient to move. The design integrates power of the air pump and the motor, an independent air pump motor is omitted, cost and energy consumption are reduced, and the structure is more compact. And through dynamic pressure feedback control, the balance between adsorption stability and energy consumption optimization is realized, the problem of shaking of a traditional chef machine caused by vacuum leakage is effectively solved, and the operation reliability is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of food processors, and in particular to a food processor with good stability. Background Art

[0002] Existing food processors are usually equipped with a suction cup foot pad structure, which fixes the body to the operating table through the principle of physical adsorption to reduce the vibration amplitude in the working state and improve the stability of the equipment. However, the adsorption function of traditional suction cup foot pads mainly relies on the operator's manual pressure or the instantaneous negative pressure generated by the weight of the body to achieve vacuum adsorption. The vacuum degree is limited and difficult to maintain for a long time. In actual use, especially when the food processor is in high-load operation (such as kneading dough, stirring high-density ingredients) or working for a long time, the sealing between the suction cup and the table is easily affected by factors such as vibration, impurities or uneven table surface, resulting in the gradual attenuation or even failure of the adsorption force. At this time, the body may be displaced due to vibration, and there is a risk of tipping over. Summary of the invention

[0003] In view of this, the present invention provides a food processor with good stability, which has better stability and is not easily affected by factors such as vibration.

[0004] In order to achieve the above object, the present invention provides the following technical solutions.

[0005] A chef machine with good stability comprises an air pump, a housing, a base fixed to the bottom of the housing, a motor arranged in the housing, a stirring mechanism driven by the motor and a control system, wherein the base is provided with a hollow supporting sleeve, a vacuum suction cup is arranged in the supporting sleeve, the vacuum suction cup extends out of the lower surface of the base, and the vacuum suction cup is connected to the air inlet of the air pump through an exhaust pipeline; A clutch is provided between the transmission shaft of the air pump and the output shaft of the motor, and the engagement state of the clutch is controlled by the control system; The air extraction pipeline is provided with a vacuum pressure sensor and an electric control valve for connecting to the outside. When the electric control valve is opened, the air extraction pipeline is connected to the outside. The control system is configured to: During the start-up phase of the food processor, the clutch is first closed to connect the air pump to the motor, and the electric control valve is closed synchronously; When the vacuum pressure sensor detects that the negative pressure value reaches a set threshold, the clutch is disconnected; When the vacuum pressure sensor detects that the negative pressure value is lower than a set threshold, closing the clutch; After the food processor stops working, the electric control valve is opened.

[0006] When the kitchen machine starts working, in order to avoid raising too much flour, the initial speed of the motor is usually set at a relatively low level, and the power required for initial stirring is not high. At this time, the power of the kitchen machine's own motor is used to drive the air pump, which will not have a great impact on the stirring power, and can also effectively pump air from the suction cup, so that the suction cup can be stably adsorbed on the work surface, enhancing the stability of the kitchen machine when working. At the same time, the vacuum pressure sensor can detect the pressure in the exhaust pipeline. When the pressure reaches the set threshold, the clutch is disconnected, so that the motor focuses on driving the stirring mechanism. When the pressure is lower than the set threshold, the clutch is closed again to pump air again, which can reduce the vacuum leakage attenuation failure caused by shaking. After the kitchen machine stops working, the electric control valve opens to connect the exhaust pipeline to the outside, and the vacuum suction cup is depressurized so that the operator can easily move the entire kitchen machine. At the same time, there is no need to equip a separate motor to drive the air pump, which can reduce the cost and energy consumption of the equipment. Due to the reduction of a separate air pump motor, the internal space layout of the kitchen machine is more compact, the volume of the whole machine can be reduced, making it easier to store and carry, and more space can be provided for the installation and optimization of other components.

[0007] Wherein, the clutch is a claw type clutch, which comprises: An active claw wheel, which is fixedly connected to the output shaft of the motor; A driven claw wheel is connected to the transmission shaft of the air pump through a profile or a spline, so that the driven claw wheel can transmit torque and slide along the axis direction; The driver is used for driving the driven claw wheel to engage with or disengage from the driving claw wheel, and is fixedly connected with the driven claw wheel.

[0008] Since the food processor is usually equipped with a lifting mechanism, the head of the food processor needs to be lifted up and pressed down when taking and placing the mixing bowl. When the operator lifts up and presses down the head of the food processor, relative displacement will occur between the motor and the air pump. The clutch needs to meet such usage scenarios, and the claw clutch can effectively adapt to this usage scenario. During the process of lifting and pressing down the head of the food processor, the claws of the active claw wheel and the driven claw wheel can engage and separate normally, and will not affect the subsequent transmission function.

[0009] Among them, it also includes an impurity cleaning device, which includes: A gas-liquid separator, the inlet of which is connected to the air extraction pipeline, and the outlet of which is connected to the air inlet of the air pump, for separating and collecting impurities sucked from the vacuum suction cup; A lifting assembly is arranged on the base, comprising a telescopic support leg coaxially sleeved with each vacuum suction cup, and a driving mechanism for driving the telescopic support leg to move axially, the telescopic support leg can rise and fall relative to the vacuum suction cup, and the inner wall of the telescopic support leg and the bottom surface of the vacuum suction cup form a dust suction chamber with an opening facing downward; During the start-up phase of the food processor, the telescopic legs abut against the table to lift the vacuum suction cup, and the clutch is closed to connect the air pump with the motor to drive the air pump to suck impurities from the dust chamber; After the preset running time is reached, the control system controls the telescopic legs to rise until the vacuum suction cup contacts the table top.

[0010] In a real kitchen environment, the surface where the chef machine is placed is often filled with oil, water, flour, starch and other impurities, which causes the vacuum suction cup to not adsorb firmly. Moreover, since the vacuum suction cup requires a short time to achieve vacuum, the impurities sucked in during the adsorption process will remain in the exhaust pipeline. After the impurities are mixed and hardened between the pipelines, they will cause pipeline blockage and equipment failure. After a long time, the impurities will also mold, posing a health hazard. By setting an impurity cleaning device, before the vacuum suction cup is adsorbed and fixed, the telescopic legs abut against the countertop and the vacuum suction cup is suspended, so that there is enough space around the vacuum suction cup to inhale sufficient airflow, so that the impurities under the vacuum suction cup can be more effectively sucked into the gas-liquid separator. When the preset running time is reached, the drive mechanism drives the telescopic legs to rise relative to the vacuum suction cup, so that the vacuum suction cup contacts the countertop for adsorption and fixation. This method of cleaning impurities first and then adsorbing and fixing them can avoid the influence of impurities on the adsorption effect of the vacuum suction cup, ensure that the vacuum suction cup can be firmly adsorbed on the countertop, and improve the stability of the food processor during operation. At the same time, sufficient airflow can prompt impurities to be sent into the gas-liquid separator, reducing impurities remaining in the exhaust pipeline.

[0011] Wherein, the driving mechanism comprises: A driving cylinder body is coaxially arranged above the telescopic leg and is provided with a driving pipeline for communicating with the air pump. The driving pipeline is provided with an electric control valve for communicating with the outside. When the electric control valve is opened, the driving pipeline is connected with the outside. A piston part is provided on the top of the telescopic leg. The piston part is arranged in the driving cylinder body and can slide axially. A push spring is provided in the driving cylinder body. The push spring is respectively connected to the inner wall of the driving cylinder body and the piston part to apply an elastic force to move downward to the telescopic leg. The reversing valve is used to control the connection state of the air pump. It is provided with an A port connected to the air extraction pipeline, a B port connected to the drive pipeline and a Z port for air outlet. The air inlet of the air pump is connected to the Z port.

[0012] When the reversing valve is switched to port A, the air pump is connected to the air extraction pipeline, and when the reversing valve is switched to port B, the air pump is connected to the drive pipeline. During the startup phase of the chef machine, the telescopic legs abut against the table under the action of the push spring to lift the vacuum suction cup. At this time, the clutch is closed to make the air pump and the motor transmission connection, and the reversing valve connects the air pump with the air extraction pipeline to drive the vacuum suction cup to suck impurities from the dust chamber. After the preset running time is reached, the control system controls the reversing valve to connect the drive pipeline with the air pump to drive the telescopic legs to rise by extracting the air in the drive cylinder until the vacuum suction cup contacts the table, and then the reversing valve connects the air pump with the air extraction pipeline again to make the vacuum suction cup suck the table tightly.

[0013] Among them, the impurity cleaning device also includes a jet sleeve, which is sleeved between the telescopic support leg and the vacuum suction cup. The air inlet of the jet sleeve is connected to the air outlet of the air pump through a jet pipeline. The air outlet of the jet sleeve is located in the dust suction chamber. The reversing valve is also provided with a C port connected to the outside. When the reversing valve is switched to the C port, the air pump inhales air from the outside and sprays it out from the air outlet of the jet sleeve.

[0014] By connecting the air outlet of the air pump with the jet sleeve, the airflow generated by the air pump can be reasonably utilized. When impurities need to be cleaned, the air pump can not only be used to extract the vacuum suction cup, but also to blow the air through the jet sleeve to the dust chamber (i.e. the area below the vacuum suction cup), which can blow away some agglomerated dust and make it easier for the vacuum suction cup to suck it up, thereby further improving the effect of impurity cleaning, ensuring the cleanliness of the placement surface, and providing better conditions for the subsequent stable adsorption of the vacuum suction cup.

[0015] The air outlet of the jet sleeve is annular.

[0016] Wherein, the vacuum suction cup is fixedly connected to the driving cylinder body to form an integral assembly; An adjusting cylinder is coaxially sleeved in the supporting sleeve, a connecting rod extends from the top of the driving cylinder, and the connecting rod is slidably arranged in the adjusting cylinder; An adjustment spring is provided in the adjustment cylinder, and the adjustment spring is respectively connected to the inner wall of the adjustment cylinder and the connecting rod, and is used to apply an elastic force for downward displacement to the driving cylinder; The connecting rod is internally provided with: A piston cavity, the bottom of which is connected to the air pump via a drive pipeline; A flow channel, axially penetrating the connecting rod, for connecting the upper chamber and the lower chamber of the adjusting cylinder; The piston assembly comprises a small piston and a piston spring, wherein the small piston is slidably disposed in the piston cavity, and the piston spring is respectively connected to the small piston and the piston cavity to apply an elastic force for upward displacement to the piston spring; The upper end of the small piston extends into the flow channel, and when the negative pressure in the driving pipeline reaches a preset threshold, the small piston is sucked downward by the negative pressure to close the flow channel; When the air pump stops, the small piston moves upward under the action of the piston spring to open the flow channel, so that the medium in the adjustment cylinder can flow through the flow channel.

[0017] Since the countertop may be uneven, when there are multiple sets of vacuum suction cups, they may not all be able to adhere to the countertop, causing the food processor to become unstable. When the countertop is uneven, the drive cylinder slides axially in the adjustment cylinder through the connecting rod, automatically compensating for the height difference, ensuring that each vacuum suction cup is in full contact with the countertop, improving the suction stability of the food processor in the concave and convex countertop scenario, and avoiding shaking caused by partial leakage due to some vacuum suction cups not contacting the countertop. Under normal conditions, the piston spring pushes the small piston to open the flow channel to ensure that the medium (such as gas or liquid) in the adjustment cylinder can flow freely. This stage corresponds to when the food processor is just placed on the countertop. At this time, the telescopic legs abut the countertop under the action of the push spring and can rise or fall simultaneously with the drive cylinder. The telescopic legs, vacuum suction cups and drive cylinders form a whole that can move simultaneously. When the food processor is placed on the countertop, the whole will adaptively compensate for the height difference. When encountering a protrusion, the whole will rise and compress the adjustment spring. When encountering a depression, the adjustment spring will push the whole down. When the food processor starts working, when the pressure in the drive pipeline reaches a preset threshold (for example, the negative pressure critical value when the vacuum is completed), the small piston moves down under the action of the negative pressure to overcome the elastic force of the piston spring to close the flow channel and lock the connecting rod. At this time, the whole composed of the telescopic legs, vacuum suction cups and drive cylinder is locked in this state, and after the impurities in the subsequent vacuum chamber are sucked out, the telescopic legs can rise and fall normally relative to the vacuum suction cup and will not be affected by the adjustment cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the chef machine of the present invention.

[0019] Figure 2 It is a schematic diagram of the internal structure of the chef machine of the present invention.

[0020] Figure 3 Exploded view of the clutch, motor and air pump.

[0021] Figure 4 Exploded view of the lift assembly and vacuum cup.

[0022] Figure 5 A cross-sectional view of the lift assembly and vacuum cup.

[0023] Figure 6 for Figure 5 A magnified schematic diagram of center A.

[0024] Figure 7 for Figure 5 A magnified schematic diagram of point B in the middle.

[0025] Figure 8 This is a connection diagram of the exhaust pipeline, drive pipeline and injection pipeline.

[0026] Reference numerals include: Air pump 1, air inlet 11 of the air pump, air outlet 12 of the air pump, transmission shaft 13, connecting seat 14; Clutch 2, active claw wheel 21, driven claw wheel 22, driver 23; Support sleeve 3, adjustment cylinder 31, adjustment spring 311, vacuum suction cup 32, air extraction pipeline 321, electric control valve 322, bump 323, telescopic support leg 33, dust suction chamber 331, piston part 332, slide groove 333, push spring 334, drive cylinder 34, connecting rod 341, piston cavity 3411, flow channel 3412, small piston 3413, piston spring 3414, blocking ring 3415, drive pipeline 342, jet sleeve 35, air inlet 351 of jet sleeve, air outlet 352 of jet sleeve, jet pipeline 353; Directional valve 4, A port 41, B port 42, C port 43, Z port 44; Shell 5, motor 6, output shaft 61, stirring mechanism 7, base 8, gas-liquid separator 9. DETAILED DESCRIPTION

[0027] The present invention is described in detail below in conjunction with specific embodiments.

[0028] Combination Figure 1-Figure 3 The chef machine with good stability of this embodiment includes an air pump 1, a shell 5, a base 8 fixed to the bottom of the shell 5, a motor 6 arranged in the shell 5, a stirring mechanism 7 driven by the motor 6 and a control system, the base 8 is provided with a plurality of hollow supporting sleeves 3, a vacuum suction cup 32 is arranged in the supporting sleeve 3, the vacuum suction cup 32 extends out of the lower surface of the base 8, and the vacuum suction cup 32 is connected to the air inlet 11 of the air pump through an exhaust pipe 321.

[0029] A clutch 2 is provided between the transmission shaft 13 of the air pump 1 and the output shaft 61 of the motor 6, and the base 8 is provided with a connection seat 14 for keeping the transmission shaft 13 in stable rotation, and the engagement state of the clutch 2 is controlled by the control system. A vacuum pressure sensor and an electric control valve 322 for connecting to the outside are provided on the air extraction pipeline 321, and the air extraction pipeline 321 is connected to the outside when the electric control valve 322 is opened.

[0030] During the start-up phase of the food processor, the control system controls the clutch 2 to close, so that the air pump 1 is connected to the motor 6 in transmission, and the electric control valve 322 is closed synchronously to drive the vacuum suction cup 32 to start pumping air. When the vacuum pressure sensor detects that the negative pressure value reaches the set threshold, the clutch 2 is disconnected, and the vacuum suction cup 32 completes the adsorption of the table to fix the food processor. When the vacuum pressure sensor detects that the negative pressure value is lower than the set threshold, the clutch 2 is closed, and the motor 6 drives the air pump 1 again to pump air, so that the vacuum suction cup 32 sucks the table again. After the food processor stops working, the electric control valve 322 is opened, the air extraction pipeline 321 is connected to the outside, the vacuum suction cup 32 inhales air to release the negative pressure, and the operator can take away the food processor.

[0031] When the chef machine starts working, in order to avoid raising too much flour, the initial speed of the motor 6 is usually set to be relatively low, and the power required for initial stirring is not high. At this time, the power of the chef machine's own motor 6 is used to drive the air pump 1, which will not have a great impact on the stirring power, and can also effectively evacuate the suction cup so that the suction cup is stably adsorbed on the work surface, thereby enhancing the stability of the chef machine when working. At the same time, the vacuum pressure sensor can detect the pressure in the exhaust pipeline 321. When the pressure reaches the set threshold, the clutch 2 is disconnected, so that the motor 6 focuses on driving the stirring mechanism 7. When the pressure is lower than the set threshold, the clutch 2 is closed again to evacuate again, which can reduce the vacuum leakage attenuation failure caused by shaking. After the chef machine stops working, the electric control valve 322 is opened to connect the exhaust pipeline 321 to the outside, and the vacuum suction cup 32 is depressurized so that the operator can easily move the chef machine as a whole. In addition, such a design does not require an additional separate motor to drive the air pump 1, which can reduce the cost and energy consumption of the equipment. Since a separate air pump motor 6 is reduced, the internal space layout of the food processor becomes more compact, the volume of the entire machine can be reduced, making it easier to store and carry, and more space can be provided for the installation and optimization of other components.

[0032] Since the chef machine is usually equipped with a lifting mechanism, the head of the chef machine needs to be lifted up and pressed down when taking and placing the mixing bowl. When the operator lifts up and presses down the head of the chef machine, a relative displacement will occur between the motor 6 and the air pump 1. The clutch 2 needs to meet such a usage scenario. Figure 3The clutch 2 is a claw-type clutch 2, which includes an active claw wheel 21, a driven claw wheel 22 and a driver 23. The active claw wheel 21 is fixedly connected to the output shaft 61 of the motor 6. The driven claw wheel 22 is connected to the transmission shaft 13 of the air pump 1, and it can also be a spline connection, so that the driven claw wheel 22 can slide along the axial direction while transmitting torque. The driver 23 is used to drive the driven claw wheel 22 to engage or disengage the active claw wheel 21. It is fixedly connected to the driven claw wheel 22. The driver 23 can be in the form of an electromagnetic driver or a miniature electric push rod. The claw-type clutch can effectively adapt to this usage scenario. During the process of lifting and pressing down the head of the chef machine, the claws of the active claw wheel 21 and the driven claw wheel 22 can be normally engaged and separated, and will not affect the subsequent transmission function.

[0033] In a real kitchen environment, the surface where the food processor is placed is often filled with oil, water, flour, starch and other impurities, which can cause the vacuum cup 32 to not be firmly attached. In addition, since the vacuum cup 32 needs a short time to evacuate the air, the impurities sucked in during the adsorption process will stay in the air extraction pipeline 321. After the impurities are mixed, they will form a mass and harden between the pipelines, which will cause pipeline blockage and equipment failure. After a long time, the impurities will also become moldy, which poses a health hazard. Figure 2 The food processor of this embodiment also includes an impurity cleaning device, which includes a gas-liquid separator 9 and a lifting assembly. The gas-liquid separator 9 is used to separate and collect impurities sucked from the vacuum suction cup 32, and its inlet is connected to the air extraction pipeline 321, and its outlet is connected to the air inlet 11 of the air pump. The lifting assembly is arranged on the base 8, which includes a telescopic support leg 33 coaxially sleeved with each vacuum suction cup 32, and a driving mechanism for driving the telescopic support leg 33 to move axially. The telescopic support leg 33 can rise and fall relative to the vacuum suction cup 32, and the inner wall of the telescopic support leg 33 and the bottom surface of the vacuum suction cup 32 form a dust chamber 331 with an opening facing downward.

[0034] During the start-up phase of the food processor, the telescopic legs 33 abut against the table to suspend the vacuum suction cup 32, and the clutch 2 is closed to connect the air pump 1 with the motor 6 to drive the vacuum suction cup 32 to absorb impurities in the dust chamber 331. After the preset running time is reached, the control system controls the telescopic legs 33 to rise until the vacuum suction cup 32 contacts the table.

[0035] By setting up an impurity cleaning device, before the vacuum suction cup 32 is adsorbed and fixed, the telescopic legs 33 abut against the table and suspend the vacuum suction cup 32, so that there is enough space around the vacuum suction cup 32 to absorb sufficient airflow, so that the impurities under the vacuum suction cup 32 can be more effectively sucked into the gas-liquid separator 9. When the preset running time is reached, the driving mechanism drives the telescopic legs 33 to rise relative to the vacuum suction cup 32, so that the vacuum suction cup 32 contacts the table for adsorption and fixation. This method of cleaning impurities first and then adsorbing and fixing can avoid the influence of impurities on the adsorption effect of the vacuum suction cup 32, ensure that the vacuum suction cup 32 can be firmly adsorbed on the table, and improve the stability of the chef machine during operation. At the same time, sufficient airflow can prompt impurities to be sent into the gas-liquid separator 9, reducing impurities remaining in the exhaust pipeline 321.

[0036] Specifically, combined Figure 4 , Figure 5 and Figure 8 The driving mechanism of the chef machine of this embodiment includes a driving cylinder 34 and a reversing valve 4. Figure 5 As shown, the drive cylinder 34 is coaxially arranged above the telescopic leg 33, and the lower surface of the drive cylinder 34 is fixedly connected to the protrusion 323 of the vacuum suction cup 32. The drive cylinder 34 is connected to the air pump 1 through a drive pipeline 342. The drive pipeline 342 is provided with an electric control valve 322. A piston portion 332 is provided on the top of the telescopic leg 33. The piston portion 332 is arranged in the drive cylinder 34 and can slide axially. The telescopic leg 33 is also provided with a slide groove 333 that cooperates with the protrusion 323. The telescopic leg 33 slides with the protrusion 323 of the vacuum suction cup 32 through the slide groove 333. A push spring 334 is provided in the drive cylinder 34, and the push spring 334 is respectively connected to the inner wall of the drive cylinder 34 and the piston portion 332 to apply an elastic force to the telescopic leg 33 to move downward. Specifically, the push spring 334 is configured to be able to support the telescopic leg 33 to lift the entire chef machine under normal conditions. As shown in FIG. Figure 8 As shown, the reversing valve 4 is used to control the connectivity state of the air pump 1. Specifically, the reversing valve 4 is provided with an A port 41 connected to the exhaust pipeline 321, a B port 42 connected to the drive pipeline 342, and a Z port 44 for air outlet. The air inlet 11 of the air pump is connected to the Z port 44.

[0037] When the reversing valve 4 is switched to the A port 41, the air pump 1 is connected to the air extraction pipeline 321, and when the reversing valve 4 is switched to the B port 42, the air pump 1 is connected to the driving pipeline 342. In the startup stage of the chef machine, the telescopic legs 33 abut against the table under the action of the push spring 334 to lift the vacuum suction cup 32. At this time, the clutch 2 is closed to make the air pump 1 and the motor 6 drive connected, and the reversing valve 4 connects the air pump 1 with the air extraction pipeline 321 to drive the vacuum suction cup 32 to suck impurities from the dust chamber 331. After reaching the preset running time, the control system controls the reversing valve 4 to connect the driving pipeline 342 with the air pump 1, so as to drive the telescopic legs 33 to rise by extracting the air in the driving cylinder 34 until the vacuum suction cup 32 contacts the table, and then the reversing valve 4 connects the air pump 1 with the air extraction pipeline 321 again to make the vacuum suction cup 32 suck the table tightly.

[0038] Since the dust on the table surface is easily mixed with the oil to form larger particles, it is not easy to be sucked away by the vacuum suction cup 32. Figure 4 As shown, the impurity cleaning device also includes an air jet sleeve 35, which is sleeved between the telescopic support leg 33 and the vacuum suction cup 32. Figure 7 and Figure 8 The air inlet 352 of the jet sleeve is annular, and a gap for jetting is provided inside the jet sleeve 35. The air inlet 351 of the jet sleeve is connected to the air outlet 12 of the air pump through the jet pipe 353. The airflow enters from the air inlet 351 of the jet sleeve and is ejected from the air inlet 352 of the jet sleeve through the gap. The air inlet 352 of the jet sleeve is located in the dust suction chamber 331. The reversing valve 4 is also provided with a C port 43 connected to the outside. When the reversing valve 4 switches to the C port 43, the air pump 1 inhales air from the outside and ejects it from the air inlet 352 of the jet sleeve. Before the vacuum suction cup 32 absorbs impurities, the reversing valve 4 is connected to the C port 43, so that the air pump 1 drives the jet sleeve 35 to eject airflow to purge the dust suction chamber 331.

[0039] By connecting the air outlet 12 of the air pump with the jet sleeve 35, the airflow generated by the air pump 1 can be reasonably utilized. When impurities need to be cleaned, the air pump 1 can not only be used to extract the vacuum suction cup 32, but also can spray air through the jet sleeve 35 to purge the dust chamber 331 (i.e., the area below the vacuum suction cup 32), which can blow away some agglomerated dust and make it easier to be sucked by the vacuum suction cup 32, thereby further improving the effect of impurity cleaning, ensuring the cleanliness of the adsorption area, and providing better conditions for the subsequent stable adsorption of the vacuum suction cup 32.

[0040] Since the table surface may be uneven, when multiple sets of vacuum suction cups 32 are provided, each vacuum suction cup 32 may not be able to completely absorb the table surface, causing the food processor to become unstable. Figure 4 and Figure 5, the vacuum suction cup 32 is fixedly connected to the bottom surface of the driving cylinder 34 to form an integral assembly; An adjustment cylinder 31 is coaxially sleeved in the support sleeve 3 and is located at the top of the support sleeve 3. A connecting rod 341 extends from the top of the drive cylinder 34 and is slidably disposed in the adjustment cylinder 31. An adjustment spring 311 is provided in the adjustment cylinder 31. The adjustment spring 311 is respectively connected to the inner wall of the adjustment cylinder 31 and the connecting rod 341, and is used to apply an elastic force for downward displacement to the driving cylinder 34. The adjustment spring 311 is configured such that when the chef machine is placed on a horizontal plane, the adjustment spring 311 will be compressed to a certain extent, so as to automatically compensate for the height difference within the elastic range. A piston cavity 3411, a flow channel 3412 and a piston assembly are provided inside the connecting rod 341. The bottom of the piston cavity 3411 is connected to the air pump 1 through a driving pipeline 342. The flow channel 3412 axially penetrates the connecting rod 341 to connect the upper chamber and the lower chamber of the adjustment cylinder 31. The piston assembly includes a small piston 3413 and a piston spring 3414. The small piston 3413 is slidably disposed in the piston cavity 3411. A blocking ring 3415 is provided above the flow channel 3412 to prevent the small piston 3413 from falling out. The piston spring 3414 connects the small piston 3413 and the piston cavity 3411 respectively to apply an elastic force for upward displacement to the piston spring 3414; The upper end of the small piston 3413 extends into the flow channel 3412. When the negative pressure in the driving pipeline 342 reaches a preset threshold, the small piston 3413 is sucked downward by the air pump 1 under the action of the negative pressure, and the lower end of the small piston 3413 fits with the bottom surface of the flow channel 3412 to block the flow channel 3412. When the air pump 1 stops, the electric control valve 322 of the driving pipeline 342 remains closed, the driving pipeline 342 remains in a closed negative pressure state, and the small piston 3413 keeps blocking the flow channel 3412 under the action of negative pressure; After the electric control valve 322 of the driving pipeline 342 is opened, the driving pipeline 342 is connected to the outside to release the negative pressure, and the small piston 3413 moves upward under the action of the piston spring 3414, and the lower end of the small piston 3413 is separated from the bottom surface of the flow channel 3412, thereby opening the flow channel 3412, so that the medium in the adjustment cylinder 31 can flow through the flow channel 3412. Figure 5The telescopic legs 33, vacuum suction cups 32 and drive cylinders 34 form a whole that can move simultaneously. When the food processor is placed, when encountering a raised area, the whole group will rise and compress the adjustment spring 311. When encountering a recessed area, the adjustment spring 311 will push the whole group down, so that each telescopic leg 33 can always maintain contact with the table surface, and no telescopic leg 33 will be suspended in the air.

[0041] In this way, when the countertop is uneven, the drive cylinder 34 can slide axially in the adjustment cylinder 31 through the connecting rod 341, automatically compensating for the height difference, ensuring that each vacuum suction cup 32 is in full contact with the countertop, improving the adsorption stability of the chef machine in the uneven countertop scenario, and avoiding shaking caused by local leakage due to some vacuum suction cups 32 not contacting the countertop. Under normal circumstances, the piston spring 3414 pushes the small piston 3413 to open the flow channel 3412 to ensure that the medium (such as gas or liquid) in the adjustment cylinder 31 can flow freely. This stage corresponds to when the chef machine is just placed on the countertop. At this time, the telescopic legs 33 abut the countertop under the action of the push spring 334, and can rise or fall at the same time as the drive cylinder 34. The telescopic legs 33, vacuum suction cups 32 and drive cylinder 34 form a whole that can move simultaneously. When the chef machine is placed on the countertop, the whole will adaptively compensate for the height difference; When the machine starts working, when the pressure in the driving pipeline 342 reaches a preset threshold value (for example, the negative pressure critical value when vacuuming is completed), the small piston 3413 moves downward under the action of negative pressure to overcome the elastic force of the piston spring 3414 to close the flow channel 3412 and lock the connecting rod 341. At this time, the whole composed of the telescopic support leg 33, the vacuum suction cup 32 and the driving cylinder body 34 is locked in this state, and after the impurities in the subsequent dust chamber 331 are sucked out, the telescopic support leg 33 can rise and fall normally relative to the vacuum suction cup 32 and will not be affected by the adjustment cylinder body 31.

[0042] The specific working process of the chef machine of this embodiment is as follows: During the start-up phase of the food processor, the control system controls the clutch 2 to close, so that the air pump 1 is connected to the motor 6 in a transmission manner, and the electric control valve 322 is closed at the same time. At this time, the telescopic support leg 33 abuts against the table under the action of the push spring 334, and the vacuum suction cup 32 is in an overhead state; When jet cleaning is required, the reversing valve 4 switches to port C, so that the air pump 1 drives the jet sleeve 35 to spray air to purge the dust chamber 331 to improve the impurity cleaning effect. When jet cleaning is not required or the jet cleaning is completed, the reversing valve 4 switches to port A, connecting the air pump 1 with the exhaust pipe 321, and the air pump 1 drives the vacuum suction cup 32 to absorb impurities in the dust chamber 331; After reaching the preset running time, the control system controls the reversing valve 4 to switch to the B port, connects the driving pipeline 342 with the air pump 1, and extracts the air in the driving cylinder 34 to drive the telescopic legs 33 to rise until the vacuum suction cup 32 contacts the table surface, and then the reversing valve 4 switches to the A port again to connect the air pump 1 with the exhaust pipeline 321, so that the vacuum suction cup 32 sucks the table surface tightly; When the vacuum pressure sensor detects that the negative pressure value reaches the set threshold, the clutch 2 is disconnected; if the negative pressure value is lower than the set threshold, the clutch 2 is closed, and the motor 6 drives the air pump 1 to pump air again; If the table surface is uneven, the drive cylinder 34 can slide axially in the adjustment cylinder 31 through the connecting rod 341 to automatically compensate for the height difference. After the food processor stops working, the electric control valve 322 is opened, the air extraction pipeline 321 is connected to the outside, the vacuum suction cup 32 inhales air to release the negative pressure, and the operator can easily take away the food processor.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A food processor with good stability, comprising a housing, an air pump, a base fixed to the bottom of the housing, a motor arranged in the housing, a stirring mechanism driven by the motor, and a control system, wherein the base is provided with a hollow supporting sleeve, and the characteristics are: A vacuum suction cup is arranged in the support sleeve, the vacuum suction cup extends out of the lower surface of the base, and the vacuum suction cup is connected to the air inlet of the air pump through an air extraction pipeline; A clutch is provided between the transmission shaft of the air pump and the output shaft of the motor, and the engagement state of the clutch is controlled by the control system; The air extraction pipeline is provided with a vacuum pressure sensor and an electric control valve for connecting to the outside. When the electric control valve is opened, the air extraction pipeline is connected to the outside. The control system is configured to: During the start-up phase of the food processor, the clutch is first closed to connect the air pump to the motor, and the electric control valve is closed synchronously; When the vacuum pressure sensor detects that the negative pressure value reaches a set threshold, the clutch is disconnected; When the vacuum pressure sensor detects that the negative pressure value is lower than a set threshold, closing the clutch; After the food processor stops working, the electric control valve is opened.

2. The chef machine with good stability as claimed in claim 1, characterized in that: The clutch is a claw clutch, which comprises: An active claw wheel, which is fixedly connected to the output shaft of the motor; A driven claw wheel is connected to the transmission shaft of the air pump through a profile or a spline, so that the driven claw wheel can transmit torque and slide along the axis direction; The driver is used for driving the driven claw wheel to engage with or disengage from the driving claw wheel, and is fixedly connected with the driven claw wheel.

3. The chef machine with good stability as claimed in claim 1, characterized in that: Also included is an impurity cleaning device, which includes: A gas-liquid separator, the inlet of which is connected to the air extraction pipeline, and the outlet of which is connected to the air inlet of the air pump, for separating and collecting impurities sucked from the vacuum suction cup; A lifting assembly is arranged on the base, comprising a telescopic support leg coaxially sleeved with each vacuum suction cup, and a driving mechanism for driving the telescopic support leg to move axially, the telescopic support leg can rise and fall relative to the vacuum suction cup, and the inner wall of the telescopic support leg and the bottom surface of the vacuum suction cup form a dust suction chamber with an opening facing downward; During the start-up phase of the food processor, the telescopic legs abut against the table to lift the vacuum suction cup, and the clutch is closed to connect the air pump with the motor to drive the air pump to suck impurities from the dust chamber; After the preset running time is reached, the control system controls the telescopic legs to rise until the vacuum suction cup contacts the table top.

4. The chef machine with good stability as claimed in claim 3, characterized in that: The driving mechanism comprises: A drive cylinder body is coaxially arranged above the telescopic leg and is provided with a drive pipeline for communicating with the air pump. The drive pipeline is provided with an electric control valve for communicating with the outside. When the electric control valve is opened, the drive pipeline is connected with the outside. A piston part is provided on the top of the telescopic leg. The piston part is arranged in the drive cylinder body and can slide axially. A push spring is provided in the drive cylinder body. The push spring is respectively connected to the inner wall of the drive cylinder body and the piston part to apply an elastic force to move downward to the telescopic leg. The reversing valve is used to control the connection state of the air pump. It is provided with an A port connected to the air extraction pipeline, a B port connected to the drive pipeline and a Z port for air outlet. The air inlet of the air pump is connected to the Z port.

5. The chef machine with good stability as claimed in claim 4, characterized in that: The impurity cleaning device also includes a jet sleeve, which is sleeved between the telescopic support leg and the vacuum suction cup. The air inlet of the jet sleeve is connected to the air outlet of the air pump through a jet pipeline. The air outlet of the jet sleeve is located in the dust suction chamber. The reversing valve is also provided with a C port connected to the outside. When the reversing valve is switched to the C port, the air pump inhales air from the outside and sprays it out from the air outlet of the jet sleeve.

6. The chef machine with good stability as claimed in claim 5, characterized in that: The air outlet of the jet sleeve is annular.

7. The kitchen machine with good stability as claimed in claim 4, characterized in that: The vacuum suction cup is fixedly connected to the driving cylinder body to form an integral assembly; An adjusting cylinder is coaxially sleeved in the supporting sleeve, a connecting rod extends from the top of the driving cylinder, and the connecting rod is slidably arranged in the adjusting cylinder; An adjustment spring is provided in the adjustment cylinder, and the adjustment spring is respectively connected to the inner wall of the adjustment cylinder and the connecting rod, and is used to apply an elastic force for downward displacement to the driving cylinder; The connecting rod is internally provided with: A piston cavity, the bottom of which is connected to the air pump via a drive pipeline; A flow channel, axially penetrating the connecting rod, for connecting the upper chamber and the lower chamber of the adjusting cylinder; The piston assembly comprises a small piston and a piston spring, wherein the small piston is slidably disposed in the piston cavity, and the piston spring is respectively connected to the small piston and the piston cavity to apply an elastic force for upward displacement to the piston spring; The upper end of the small piston extends into the flow channel, and when the negative pressure in the driving pipeline reaches a preset threshold, the small piston moves downward to close the flow channel; When the air pump stops, the small piston moves upward under the action of the piston spring to open the flow channel, so that the medium in the adjustment cylinder can flow through the flow channel.

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