Internal circulation heat dissipation motor and chef machine

Abstract

The invention discloses an internal circulation heat dissipation motor and a chef machine, and relates to the technical field of motors and chef machines, the chef machine comprises a shell, a motor, a head raising mechanism and a heat dissipation system, and the heat dissipation system is composed of an internal circulation mechanism, an external heat dissipation mechanism and a heat exchange mechanism. The internal circulation mechanism comprises a circulation cavity, a circulation air channel and a circulation fan, and closed-loop airflow is formed to take away heat generated by the motor. The external heat dissipation mechanism comprises a heat dissipation air channel and a heat dissipation fan and is used for discharging heat to the external environment. The heat exchange mechanism achieves heat transfer through cooling fins at the cold end and the hot end, the cold end absorbs heat of the motor, and the hot end discharges the heat through a cooling fan. According to the design, flour and water vapor are prevented from entering the motor, the possibility of dirt and short circuit of equipment is reduced, and the reliability and safety of the equipment are improved.

Description

Technical Field

[0001] The present invention relates to the technical fields of motors and mixers. Background Art

[0002] Currently, most mixers on the market adopt an air-cooled heat dissipation system to ensure the normal temperature of the equipment during operation. The air-cooled heat dissipation system realizes heat dissipation by setting ventilation holes on the mixer body and using the natural convection of air or the forced convection of a fan to take out the heat generated inside the equipment. This heat dissipation method has the advantages of simple structure and low cost, so it has been widely used in the heat dissipation design of mixers. However, while the ventilation holes of the air-cooled heat dissipation system achieve air circulation and heat dissipation, they also become channels for flour and water vapor to enter the inside of the mixer. In the initial stage of dough kneading, the flour and water have not been fully mixed, and the flour is very easy to be lifted under the stirring of the kneading rod. After the flour and water vapor enter the equipment, the two are easy to mix and form dirt, which gradually accumulates on the air duct and the surface of the motor, reducing the heat dissipation efficiency. The reduction of the heat dissipation efficiency will cause the temperature of the motor to be too high during operation, affecting the performance and service life of the motor. Summary of the Invention

[0003] In view of this, the present invention provides a motor and a mixer with internal circulation heat dissipation, and its heat dissipation system does not directly communicate with the external environment during operation, so it is not easy for flour and water vapor to enter the equipment and adhere to the motor.

[0004] To achieve the above object, the present invention provides the following technical solutions.

[0005] A mixer with internal circulation heat dissipation, comprising a housing, a motor, a head lifting mechanism and a heat dissipation system, wherein the heat dissipation system includes: An internal circulation mechanism, including a circulation cavity, a circulation air duct and a circulation fan. The circulation cavity is enclosed by the housing. The circulation air duct is arranged around the motor and communicates with the circulation cavity. The circulation fan is used to drive the air flow to flow in a closed loop between the circulation cavity and the circulation air duct; An external heat dissipation mechanism, including a heat dissipation air duct and a heat dissipation fan. The heat dissipation air duct communicates with the external environment. The heat dissipation fan is arranged in the heat dissipation air duct to drive the air flow to discharge the heat to the external environment; A heat exchange mechanism, including a cold end and a hot end. Heat dissipation fins are provided at both the cold end and the hot end. The heat dissipation fins at the cold end are located in the circulation cavity to absorb the heat generated by the motor, and the heat dissipation fins at the hot end are located in the heat dissipation air duct to blow away the heat through the heat dissipation fan; When the mixer kneads dough, the circulation fan drives the air flow to flow in a closed loop between the circulation cavity and the circulation air duct to take away the heat generated by the motor. The heat dissipation fins at the cold end absorb the heat brought by the air flow and transfer it to the hot end. The heat dissipation fan blows air to the heat dissipation fins at the hot end to discharge the heat to the external environment.

[0006] When the chef machine is working, since the cooling system adopts a closed-loop circulation design, the circulation air duct and the circulation cavity are not directly connected to the external environment. When the circulation fan and the cooling fan blow air, flour and water vapor will not be blown into the motor, avoiding the problem that flour and water vapor enter the motor through the ventilation holes in the initial stage of dough kneading in the traditional air-cooled cooling system, reducing the possibility of flour and water vapor forming dirt and reducing the motor cooling efficiency, and improving the reliability and service life of the equipment.

[0007] Among them, the cooling system further includes a condensate collection mechanism, which includes: A diversion groove is arranged at the bottom of the heat sink at the cold end for guiding the condensate to flow to the water collection tank; A water collection tank is used for collecting condensate. The diversion groove is communicated with the water collection tank through a water passing port. The water collection tank is provided with an inlet and an outlet. The inlet of the water collection tank is communicated with the heat dissipation air duct, and the outlet of the water collection tank is provided with a water absorbent cloth; When the condensate accumulated on the heat sink at the cold end slides down, the diversion groove guides the condensate to fall into the water collection tank through the water passing port. The water absorbent cloth adsorbs the condensate entering the water collection tank, and the cooling fan blows air to form an air flow from the inlet of the water collection tank to the outlet to dry the water absorbent cloth.

[0008] The motor of the existing chef machine is set at the current position after comprehensively considering various factors such as the equipment volume and transmission. However, setting the motor there will cause the internal circulation mechanism to be connected to the outside every time the chef machine raises its head to pick up and place the mixing bowl after each dough kneading. There is a certain amount of moisture in the air itself. When the chef machine is working, the temperature of the heat sink in contact with the cold end of the heat exchange mechanism is relatively low. When the moist air contacts the low-temperature heat sink, it is easy to form condensate on its surface. Every time the chef machine raises its head, new air will be replenished once, causing condensate to continuously form on the surface of the low-temperature heat sink. When the accumulated amount of condensate is relatively large, it is extremely easy to cause a short circuit of the equipment, posing a serious safety hazard. By setting a condensate collection mechanism in the equipment, the condensate can be guided to the water absorbent cloth for collection and drying, thus avoiding the occurrence of equipment short circuit caused by the accumulation and dripping of condensate.

[0009] Among them, a linkage switch is arranged between the water absorbent cloth and the water passing port. The linkage switch is connected to the water absorbent cloth. The linkage switch is provided with a spring reset component. When the cooling fan blows air, the water absorbent cloth bulges outwards to pull the linkage switch to open the water passing port. When the cooling fan stops blowing air, the spring reset component drives the linkage switch to reset to close the water passing port.

[0010] If the water passing port remains open, dust and water vapor in the external air may enter the internal circulation mechanism through the water passing port. By setting the linkage switch, the water passing port is closed when the chef machine stops, and the water passing port is opened when the cooling fan blows the water absorbent cloth to discharge the condensate. At the same time, the action of the linkage switch can clean the water passing port to avoid the accumulation and blockage of flour at the water passing port.

[0011] Among them, the water collecting tank has a narrow inlet and a wide outlet, so that a negative pressure is formed inside the water collecting tank when the cooling fan blows air. Since the water passing port is relatively small, if the accumulated condensed water in the diversion groove is not much, it may not fall from the water passing port under the action of the surface tension of the water body. By designing the water collecting tank to have a narrow inlet and a wide outlet, and using Bernoulli's principle, when the cooling fan blows air into the water collecting tank, there is a pressure at the water passing port in the direction from the diversion groove to the water collecting tank. The pressure difference of the air flow is used to accelerate the diversion of the condensed water, so that the condensed water drops, avoiding non-drop at the water passing port. In addition, it can also play a role in flushing the water passing port to prevent flour from accumulating at the water passing port.

[0012] Among them, the water absorption cloth is provided with a spring locking mechanism. When the water absorption cloth bulges outwards to the in-place position, the spring locking mechanism locks the water absorption cloth. When the cooling fan stops blowing air to the water absorption cloth, the spring locking mechanism releases the water absorption cloth, and the water absorption cloth is instantly tensioned to eject the dust attached thereto, and the cooling fan rotates in reverse to suck away the ejected dust.

[0013] Since the water collecting tank is communicated with the external heat dissipation mechanism, the air flow formed by the cooling fan blows from the inlet of the water collecting tank to the outlet. The water absorption cloth located at the outlet of the water collecting tank will accumulate more dust. By setting the spring locking mechanism, the water absorption cloth can be temporarily fixed when it bulges to the in-place position to ensure that the condensed water is effectively adsorbed. When the cooling fan stops blowing air, the spring locking mechanism automatically releases the water absorption cloth, and the spring drives the water absorption cloth to be instantly tensioned, and the elastic force is used to eject the dust adsorbed on the water absorption cloth to avoid the accumulation of dust on the water absorption cloth. Through the instant tensioning of the water absorption cloth and the reverse rotation of the cooling fan, the dust attached to the water absorption cloth can be effectively cleaned, preventing the dust from accumulating inside the equipment.

[0014] Among them, the water absorption cloth includes a fixed end and a tensioning end. Its fixed end is fixedly connected to the outlet of the water collecting tank, and a stop block is provided at the tensioning end. The spring locking mechanism includes: A tensioning spring, which is connected to the tensioning end of the water absorption cloth to be able to tension the water absorption cloth; A one-way retaining pin for one-way locking of the stop block; A release assembly, including a first cylinder body and a second cylinder body. The second cylinder body is arranged inside the first cylinder body and can slide up and down. A first cavity and a second cavity are respectively arranged inside the first cylinder body and the second cylinder body. The first cavity and the second cavity are communicated. A return spring is arranged inside the second cavity. The one-way retaining pin is slidably connected to the second cavity and can extend out of and retract into the second cavity. The return spring is connected to the one-way retaining pin; When the absorbent cloth bulges outward, its tensioning end overcomes the elastic force of the tensioning spring and moves. When it moves into place, the block is locked by the one-way stop pin. When the cooling fan stops blowing, the tensioning spring drives the tensioning end of the absorbent cloth to reset. The block drives the second cylinder to compress the first cavity through the one-way stop pin. The air in the first cavity is pressed into the second cavity, so that the one-way stop pin is driven by air pressure to retract into the second cavity, thereby causing the one-way stop pin to disengage from the block, and the absorbent cloth is released to be instantly tensioned under the action of the tensioning spring.

[0015] A motor with internal circulation heat dissipation includes a motor body, a shell, a fan, a heat exchange device, a first air duct and a second air duct. The first air duct is located around the motor body, and the second air duct is located between the motor body and the shell. The first air duct and the second air duct form a closed-loop air duct and are not connected to the external environment. The fan blows air to form a closed-loop airflow in the closed-loop air duct to take away the heat generated by the motor body. The heat exchange device includes a cold end and a hot end. The cold end of the heat exchange device absorbs the heat brought by the closed-loop airflow and dissipates it to the external environment through the hot end. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of a food processor with internal circulation heat dissipation according to the present invention.

[0017] Figure 2 This is a three-dimensional cross-sectional view of a food processor with internal circulation heat dissipation according to the present invention (part of the structure is hidden).

[0018] Figure 3 The present invention is an exploded view of a food processor with internal circulation heat dissipation.

[0019] Figure 4 This is a cross-sectional view of a food processor with internal circulation heat dissipation according to the present invention (part of the structure is hidden).

[0020] Figure 5 for Figure 4 A magnified schematic diagram of center A.

[0021] Figure 6 for Figure 5 A magnified schematic diagram of point B in the middle.

[0022] Figure 7 for Figure 5 Enlarged schematic diagram of point C in the middle.

[0023] Figure 8 A perspective cutaway view of the release assembly.

[0024] Figure 9 This is an exploded view of an internal circulation heat dissipation motor of the present invention.

[0025] Reference numerals include: Housing 1, motor 2, circulation cavity 3, circulation air duct 4, circulation fan 5, heat dissipation air duct 6, heat dissipation fan 7, semiconductor refrigeration sheet 8, cold end 9, hot end 10, heat sink 11, diversion groove 12, water collection tank 13, inlet 14, outlet 15, water absorption cloth 16, fixed end 17, tension end 18, stop block 19, water through hole 20, linkage switch 21, guide rod 211, rubber plug 212, return tension spring 22, tension spring 23, release assembly 24, one-way stop pin 25, first cylinder block 26, first cavity 27, second cylinder block 28, second cavity 29, connecting air duct 291, return spring 30, ventilation hole 31, lifting mechanism 32, pull rope 33; Motor body 34, housing 35, fan 36, heat exchange device 37, first air duct 38. Specific implementation mode

[0026] The following describes the present invention in detail with reference to specific embodiments.

[0027] Combined with Figures 1-3 In this embodiment, a planetary mixer with internal circulation heat dissipation is provided, which includes a housing 1, a motor 2, a lifting mechanism 32 and a heat dissipation system. The heat dissipation system includes an internal circulation mechanism, an external heat dissipation mechanism and a heat exchange mechanism. The internal circulation mechanism includes a circulation cavity 3, a circulation air duct 4 and a circulation fan 5. The circulation cavity 3 is enclosed by the housing 1. The motor 2 is arranged in the circulation cavity 3. The circulation air duct 4 is arranged around the motor 2 and communicated with the circulation cavity 3. The circulation fan 5 is used to drive the air flow to flow in a closed loop between the circulation cavity 3 and the circulation air duct 4. The external heat dissipation mechanism includes a heat dissipation air duct 6 and a heat dissipation fan 7. The heat dissipation air duct 6 is communicated with the external environment through a ventilation hole 31. The heat dissipation fan 7 is arranged in the heat dissipation air duct 6 to drive the air flow to discharge heat to the external environment. A partition is provided between the circulation cavity 3 and the heat dissipation air duct 6. The heat exchange mechanism in this embodiment includes a semiconductor refrigeration sheet 8. Combined with Figure 5 The semiconductor refrigeration sheet 8 includes a cold end 9 and a hot end 10. Heat sinks 11 are installed on both the cold end 9 and the hot end 10. The heat sink 11 at the cold end 9 is located in the circulation cavity 3 to absorb the heat generated by the motor 2, and the heat sink 11 at the hot end 10 is located in the heat dissipation air duct 6 to blow away the heat through the heat dissipation fan 7.

[0028] When the planetary mixer kneads dough, the circulation fan 5 drives the air flow to flow in a closed loop between the circulation cavity 3 and the circulation air duct 4 to take away the heat generated by the motor 2. The heat sink 11 at the cold end 9 absorbs the heat brought by the air flow and transfers it to the hot end 10. The heat dissipation fan 7 blows air to the heat sink 11 at the hot end 10 to discharge the heat to the external environment through the ventilation hole 31.

[0029] When the dough mixer is working, since the cooling system adopts a closed-loop circulation design, the circulation air duct 4 and the circulation cavity 3 are not directly connected to the external environment. The air flow for cooling the motor 2 flowing therein only circulates internally. When the circulation fan 5 and the cooling fan 7 blow air, flour and water vapor will not be blown into the interior of the motor 2, avoiding the problem that flour and water vapor enter the interior of the motor 2 through the ventilation holes 31 in the initial stage of kneading in the traditional air-cooled cooling system, reducing the possibility that flour and water vapor form dirt and reduce the heat dissipation efficiency of the motor, and improving the reliability and service life of the equipment.

[0030] The motor 2 of the existing dough mixer is set at the current position by comprehensively considering various factors such as the volume and transmission of the equipment. However, setting the motor 2 there will cause the circulation air duct and the circulation cavity to communicate with the outside every time the dough mixer raises its head to pick up and place the mixing bowl after each kneading (the raised state of the dough mixer can refer to the Chinese patent document CN215583926U). Although the kneading has been completed at this time and there is no problem of flour flying, since the air itself contains a certain amount of moisture, when the dough mixer is working, the temperature of the heat sink 11 in contact with the cold end 9 of the semiconductor refrigeration sheet 8 is relatively low. When the moist air contacts the low-temperature heat sink 11, it is easy to form condensed water on the surface of the heat sink 11. Every time the raising mechanism 32 of the dough mixer is opened, new air will be replenished once, causing condensed water to continuously form on the surface of the low-temperature heat sink 11. When the accumulated amount of condensed water is relatively large, it is extremely easy to cause a short circuit of the equipment, posing a serious safety hazard. As Figures 5-7 shown, the cooling system further includes a condensed water collection mechanism. The condensed water collection mechanism includes a diversion groove 12 and a water collection tank 13. The diversion groove 12 is provided at the bottom of the heat sink 11 of the cold end 9. The water collection tank 13 is used to collect condensed water. The diversion groove 12 is communicated with the water collection tank 13 through a water passage 20. The water collection tank 13 is provided with an inlet 14 and an outlet 15. The inlet 14 of the water collection tank 13 is communicated with the heat dissipation air duct 6. The outlet 15 of the water collection tank 13 is provided with a water absorption cloth 16. The water absorption cloth 16 is made of a breathable material so as to be able to adsorb moisture while allowing air flow through.

[0031] When the condensed water accumulated on the heat sink 11 of the cold end 9 slides down, the diversion groove 12 guides the condensed water to fall into the water collection tank 13 through the water passage 20. The water absorption cloth 16 adsorbs the condensed water entering the water collection tank 13. The cooling fan 7 blows air to form an air flow from the inlet 14 of the water collection tank 13 to the outlet 15 to dry the water absorption cloth 16. By providing a condensed water collection mechanism in the equipment, the condensed water can be guided to the water absorption cloth 16 for collection and dried by the air flow formed by the cooling fan 7, thereby avoiding the occurrence of a short circuit of the equipment caused by the accumulation and dripping of condensed water, and there is no need to specially pour out the condensed water, or the situation where condensed water drips to the bottom of the dough mixer will not occur.

[0032] If the water passage 20 remains open, dust and water vapor in the external air may enter the internal circulation mechanism from the water passage 20, combined withFigures 5-6 A linkage switch 21 is provided between the water-absorbing cloth 16 and the water inlet 20. The linkage switch 21 includes a guide rod 211 and a rubber plug 212. The guide rod 211 is fixed above the water inlet 20. The rubber plug 212 is slidably connected to the guide rod 211. The rubber plug 212 is connected to the water-absorbing cloth 16 through a pull rope 33. The linkage switch 21 is also provided with a spring reset assembly. The spring reset assembly includes a reset tension spring 22. One end of the reset tension spring 22 is fixedly connected to the guide rod 211, and the other end is connected to the rubber plug 212. When the cooling fan 7 blows air, the water-absorbing cloth 16 bulges outwards to pull the rubber plug 212 to slide downwards through the pull rope 33 to open the water inlet 20. When the cooling fan 7 stops blowing air, the reset tension spring 22 pulls the rubber plug 212 to reset upwards to close the water inlet 20.

[0033] By setting the linkage switch 21, the water inlet 20 is closed when the cooking machine stops, and the water inlet 20 is opened to drain the condensed water when the cooling fan 7 blows up the water-absorbing cloth 16. At the same time, the linkage switch 21 can clean the water inlet 20 when opening and closing the water inlet 20, avoiding the accumulation and blockage of flour at the water inlet 20.

[0034] Since the water inlet 20 is relatively small, if the amount of condensed water accumulated in the diversion groove 12 is not much, the condensed water may not fall from the water inlet 20 under the action of the surface tension of the water body. As Figure 5 shown, the shape of the water collection tank 13 is narrow at the opening of the inlet 14 and wide at the opening of the outlet 15. A negative pressure is formed inside the water collection tank 13 when the cooling fan 7 blows air. By designing the water collection tank 13 to be narrow at the inlet and wide at the outlet, using Bernoulli's principle, when the cooling fan 7 blows air into the water collection tank 13, there is a pressure at the water inlet 20 in the direction from the diversion groove 12 to the water collection tank 13. The air pressure difference is used to accelerate the diversion of the condensed water, so that the condensed water drops, avoiding non-drop at the water inlet 20. In addition, it can also accelerate the flow rate of the water flowing through the water inlet 20, playing a role in flushing the water inlet 20 and avoiding the accumulation of flour at the water inlet 20.

[0035] Since the water collection tank 13 is connected to the external heat dissipation mechanism, the air flow formed by the cooling fan 7 blows from the inlet 14 of the water collection tank 13 to the outlet 15. More dust from the external environment will accumulate on the water-absorbing cloth 16 located at the outlet 15. When the water-absorbing cloth 16 is wet, these dusts will adhere to the water-absorbing cloth 16. The water-absorbing cloth 16 is provided with a spring locking mechanism. When the water-absorbing cloth 16 bulges outwards to the position, the spring locking mechanism locks the water-absorbing cloth 16. When the cooling fan 7 stops blowing air to the water-absorbing cloth 16, the spring locking mechanism delays the release of the water-absorbing cloth 16, so that the water-absorbing cloth 16 is instantaneously tensioned when released by the spring locking mechanism to eject the attached dust (at this time the water-absorbing cloth 16 has been dried). At this time, the cooling fan 7 can be set to reverse to suck away the ejected dust. As Figure 5 and Figure 7As shown, the water-absorbing cloth 16 includes a fixed end 17 and a tension end 18. The fixed end 17 is fixedly connected to the lower end of the outlet 15 of the water collecting tank 13. The tension end 18 is provided with a stop block 19. The spring locking mechanism includes a tension spring 23, a one-way retaining pin 25, and a release assembly 24. As Figure 3 shown, the tension spring 23 is connected to the stop block 19 located at the tension end 18 so as to be able to tension the water-absorbing cloth 16 upward. The one-way retaining pin 25 is used to lock the stop block 19 unidirectionally. The one-way retaining pin 25 can be bent from top to bottom, but cannot be bent from bottom to top. That is, when the stop block 19 moves downward, it will not be blocked by the one-way retaining pin 25, and when the stop block 19 moves upward, it will be blocked by the one-way retaining pin 25. Combining Figures 7-8 , the release assembly 24 includes a first cylinder body 26 and a second cylinder body 28. The second cylinder body 28 is arranged inside the first cylinder body 26 and can slide up and down. A first cavity 27 and a second cavity 29 are respectively arranged inside the first cylinder body 26 and the second cylinder body 28. The first cavity 27 and the second cavity 29 are communicated through a connecting air passage 291. A return spring 30 is arranged inside the second cavity 29. The one-way retaining pin 25 is slidably connected to the second cavity 29 so as to be able to extend out of and retract into the second cavity 29. The return spring 30 is connected to the one-way retaining pin 25.

[0036] When the water-absorbing cloth 16 bulges outwards, its tension end 18 moves downward against the elastic force of the tension spring 23. When the tension end 18 and the stop block 19 move downward in place, the stop block 19 is clamped and locked by the one-way retaining pin 25 and cannot be reset upward. When the cooling fan 7 stops blowing, the tension spring 23 applies an upward elastic force to the tension end 18 of the water-absorbing cloth 16. The stop block 19 pushes the one-way retaining pin 25 upward under the action of the elastic force of the tension spring 23. The one-way retaining pin 25 then pushes the second cylinder body 28 to compress the first cavity 27. The air in the first cavity 27 is pressed into the second cavity 29, so that the one-way retaining pin 25 is driven by air pressure to retract into the second cavity 29. After a period of time, the one-way retaining pin 25 disengages from the stop block 19 to unlock the stop block 19. The water-absorbing cloth 16 is instantaneously tensioned under the action of the tension spring 23 to eject the dust adsorbed on the water-absorbing cloth 16. At this time, the cooling fan 7 rotates in reverse to form a reverse air flow to suck away the ejected dust.

[0037] By setting the spring locking mechanism, when the cooling fan 7 stops blowing, the spring locking mechanism automatically releases the water-absorbing cloth 16. The tension spring 23 drives the water-absorbing cloth 16 to be instantaneously tensioned, and uses the elastic force to eject the dust adsorbed on the water-absorbing cloth 16, avoiding the accumulation of dust on the water-absorbing cloth 16. Through the instantaneous tensioning of the water-absorbing cloth 16 and the reverse rotation of the cooling fan 7, the dust attached to the water-absorbing cloth 16 can be effectively cleaned, preventing the dust from accumulating inside the equipment.

[0038] As Figure 9As shown in the figure, a motor 2 with internal circulation heat dissipation provided in this embodiment includes a motor body 34, a housing 35, a fan 36, a heat exchange device 37, a first air duct 38, and a second air duct (not shown in the figure). The first air duct 38 is located around the motor body 34, and the second air duct is located between the motor body 34 and the housing 35, and is formed by enclosing the housing 35 and the motor body 34. The first air duct 38 and the second air duct form a closed-loop air duct and are not connected to the external environment. The fan 36 blows air to form a closed-loop air flow in the closed-loop air duct to take away the heat generated by the motor body 34. The heat exchange device 37 includes a cold end 9 and a hot end 10. The cold end 9 of the heat exchange device 37 absorbs the heat brought by the closed-loop air flow and dissipates it to the external environment through the hot end 10. It should be noted that for a food processor with internal circulation heat dissipation provided in the above embodiment, due to considering the problem of the equipment volume, the outer shell 1 of the food processor is directly used to replace the housing 35 of the motor 2 with internal circulation heat dissipation in this embodiment, and the circulation cavity 3 formed by the outer shell 1 and the motor 2 replaces the second air duct, simplifying the structure of the equipment.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A food processor with internal circulation heat dissipation in a motor, comprising a housing, a motor, a head-lifting mechanism and a heat dissipation system, characterized in that: The heat dissipation system comprises: The internal circulation mechanism includes a circulation cavity, a circulation air duct and a circulation fan, wherein the circulation cavity is enclosed by the outer shell, the circulation air duct is arranged at the periphery of the motor and communicates with the circulation cavity, and the circulation fan is used to drive the air flow to flow in a closed loop between the circulation cavity and the circulation air duct; The external heat dissipation mechanism includes a heat dissipation airway and a heat dissipation fan, wherein the heat dissipation airway is connected to the external environment, and the heat dissipation fan is arranged in the heat dissipation airway to drive the airflow to discharge the heat to the external environment; The heat exchange mechanism includes a cold end and a hot end, both of which are provided with heat sinks, the heat sinks of the cold end are located in the circulation cavity to absorb the heat generated by the motor, and the heat sinks of the hot end are located in the heat dissipation airway to blow away the heat through the heat dissipation fan; When the food processor is kneading dough, the circulating fan drives the airflow to flow in a closed loop between the circulating cavity and the circulating air duct to take away the heat generated by the motor. The heat sink at the cold end absorbs the heat brought by the airflow and transfers it to the hot end. The cooling fan blows air to the heat sink at the hot end to discharge the heat to the external environment.

2. A chef machine with internal circulation heat dissipation of the motor as claimed in claim 1, characterized in that: The heat dissipation system also includes a condensed water collection mechanism, which includes: A guide groove is provided at the bottom of the heat sink at the cold end and is used to guide the condensed water to flow to the water collecting tank; The water collecting tank is used to collect condensed water. The guide tank is connected to the water collecting tank through a water outlet. The water collecting tank is provided with an inlet and an outlet. The inlet of the water collecting tank is connected to the heat dissipation airway. The outlet of the water collecting tank is provided with a water absorbing cloth. When the condensed water accumulated on the heat sink at the cold end slides down, the guide groove guides the condensed water into the water collecting tank through the water inlet, the absorbent cloth absorbs the condensed water entering the water collecting tank, and the cooling fan blows to form an airflow from the inlet to the outlet of the water collecting tank to dry the absorbent cloth.

3. A chef machine with internal circulation heat dissipation of the motor as claimed in claim 2, characterized in that: A linkage switch is provided between the water absorbent cloth and the water outlet. The linkage switch is connected to the water absorbent cloth. The linkage switch is provided with a spring reset component. When the cooling fan blows, the water absorbent cloth bulges outward to pull the linkage switch to open the water outlet. When the cooling fan stops blowing, the spring reset component drives the linkage switch to reset to close the water outlet.

4. A chef machine with internal circulation heat dissipation of the motor as claimed in claim 2, characterized in that: The shape of the water collection tank is narrow inlet and wide outlet, so that negative pressure is formed inside the water collection tank when the cooling fan blows air.

5. A chef machine with internal circulation heat dissipation of the motor as claimed in claim 2, characterized in that: The absorbent cloth is provided with a spring locking mechanism. When the absorbent cloth bulges outward into place, the spring locking mechanism locks the absorbent cloth. When the cooling fan stops blowing air to the absorbent cloth, the spring locking mechanism releases the absorbent cloth. The absorbent cloth is instantly tensioned to eject the dust attached to it, and the cooling fan reverses to absorb the ejected dust.

6. A chef machine with internal circulation heat dissipation of the motor as claimed in claim 5, characterized in that: The absorbent cloth includes a fixed end and a tensioning end, wherein the fixed end is fixedly connected to the outlet of the water collecting tank, and the tensioning end is provided with a stopper. The spring locking mechanism includes: A tensioning spring connected to the tensioning end of the absorbent cloth to be able to tension the absorbent cloth; A one-way stop pin, used for locking the stop block in one direction; The release assembly comprises a first cylinder body and a second cylinder body, the second cylinder body is arranged in the first cylinder body and can slide up and down, the first cylinder body and the second cylinder body are respectively provided with a first cavity and a second cavity, the first cavity and the second cavity are communicated, a return spring is arranged in the second cavity, a one-way stop pin is slidably connected to the second cavity and can extend and retract into the second cavity, and the return spring is connected to the one-way stop pin; When the absorbent cloth bulges outward, its tensioning end overcomes the elastic force of the tensioning spring and moves. When it moves into place, the block is locked by the one-way stop pin. When the cooling fan stops blowing, the tensioning spring drives the tensioning end of the absorbent cloth to reset. The block drives the second cylinder to compress the first cavity through the one-way stop pin. The air in the first cavity is pressed into the second cavity, so that the one-way stop pin is driven by air pressure to retract into the second cavity, thereby causing the one-way stop pin to disengage from the block, and the absorbent cloth is released to be instantly tensioned under the action of the tensioning spring.

7. A motor with internal circulation heat dissipation, characterized in that: The invention comprises a motor body, a shell, a fan, a heat exchange device, a first air duct and a second air duct. The first air duct is located around the motor body, the second air duct is located between the motor body and the shell, the first air duct and the second air duct form a closed-loop air duct and are not connected to the external environment. The fan blows air to form a closed-loop airflow in the closed-loop air duct to take away the heat generated by the motor body. The heat exchange device comprises a cold end and a hot end. The cold end of the heat exchange device absorbs the heat brought by the closed-loop airflow and dissipates it to the external environment through the hot end.

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