An inner circulation heat dissipation motor and a chef machine

Abstract

The utility model relates to a motor and a chef machine of internal circulation heat dissipation relates to motor and chef machine technical field, the chef machine of the utility model includes shell, motor, head -raising mechanism and heat dissipation system, and heat dissipation system is by internal circulation mechanism, external heat dissipation mechanism and heat exchange mechanism is composed. Internal circulation mechanism includes circulating cavity, circulating air channel and circulating fan, forms closed loop air current to take away the heat that motor produces. External heat dissipation mechanism includes heat dissipation air channel and heat dissipation fan, is used for discharging heat to outside environment. Heat exchange mechanism realizes heat transfer through the heat dissipation fin of cold end and hot end, and cold end absorbs motor heat, and hot end discharges heat through heat dissipation fan. The design avoids that the flour and water vapor enter the motor inside, reduces the possibility of dirt and equipment short circuit, improves the reliability and safety of equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric machines and mixers. BACKGROUND

[0002] At present, most of the mixers on the market use air-cooled heat dissipation systems to ensure the normal temperature of the equipment during operation. The air-cooled heat dissipation system sets air vents on the mixer body, uses the natural convection or forced convection of air to carry out the heat generated inside the equipment, thereby achieving the purpose of heat dissipation. This heat dissipation method has the advantages of simple structure and low cost, and has been widely used in the heat dissipation design of mixers. However, the air vents of the air-cooled heat dissipation system, while realizing air circulation and heat dissipation, also become a channel for flour and water vapor to enter the interior of the mixer. At the initial stage of kneading, flour and water have not yet been completely mixed, and under the stirring of the kneading rod, flour is very easy to be raised. After the flour and water vapor enter the interior of the equipment, they 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 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

[0003] Therefore, the present application provides an electric machine with internal circulation heat dissipation and a mixer, which does not directly communicate with the external environment when the heat dissipation system is working, and flour and water vapor are not easy to enter the interior of the equipment and adhere to the motor.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical solutions.

[0005] An internal circulation heat dissipation mixer comprises a shell, a motor, a lifting mechanism and a heat dissipation system, wherein the heat dissipation system comprises:

[0006] An internal circulation mechanism comprising a circulation cavity, a circulation air duct and a circulation fan, the circulation cavity is enclosed by the shell, the circulation air duct is arranged around the motor and communicates with the circulation cavity, and the circulation fan is used to drive the airflow to flow in a closed loop between the circulation cavity and the circulation air duct;

[0007] An external heat dissipation mechanism comprising a heat dissipation air duct and a heat dissipation fan, the heat dissipation air duct communicates with the external environment, and the heat dissipation fan is arranged in the heat dissipation air duct to drive the airflow to discharge heat to the external environment;

[0008] A heat exchange mechanism comprising a cold end and a hot end, both the cold end and the hot end are provided with heat dissipation fins, the heat dissipation fins of the cold end are located in the circulation cavity to absorb the heat generated by the motor, and the heat dissipation fins of the hot end are located in the heat dissipation air duct to blow away the heat by the heat dissipation fan;

[0009] When the dough mixer is kneading dough, the circulating fan drives the air flow to circulate 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 air flow and transmits to the heat sink at the hot end, and the cooling fan blows air to the heat sink at the hot end to discharge the heat to the external environment.

[0010] When the dough mixer is working, since the heat dissipation system adopts a closed loop circulation design, the circulating air duct and the circulating cavity are not directly connected with the external environment, and the circulating fan and the cooling fan will not blow flour and water vapor into the motor when blowing air, avoiding the problem that in the traditional air cooling heat dissipation system, flour and water vapor enter the motor through the ventilation hole at the initial stage of kneading dough, reducing the possibility that flour and water vapor form dirt to reduce the heat dissipation efficiency of the motor, and improving the reliability and service life of the equipment.

[0011] The heat dissipation system further comprises a condensate water collecting mechanism, which comprises:

[0012] A guide groove is arranged at the bottom of the heat sink at the cold end, for guiding the condensate water to flow to the water collecting groove;

[0013] A water collecting groove is arranged for collecting condensate water, the guide groove and the water collecting groove are communicated through a water inlet, the water collecting groove is provided with an inlet and an outlet, the inlet of the water collecting groove is communicated with the heat dissipation air duct, and the outlet of the water collecting groove is provided with a water absorption cloth;

[0014] When the condensate water accumulated on the heat sink at the cold end slides down, the guide groove guides the condensate water to fall into the water collecting groove through the water inlet, the water absorption cloth absorbs the condensate water entering the water collecting groove, and the cooling fan blows air to form an air flow from the inlet to the outlet of the water collecting groove, so as to dry the water absorption cloth.

[0015] The current position of the motor of the existing dough mixer is determined by comprehensively considering factors such as equipment size and transmission. However, the arrangement of the motor at this position will cause the internal circulation mechanism of the dough mixer to be communicated with the external environment every time the dough mixer is lifted to take and place the dough basin. The air itself contains a certain amount of moisture, and when the dough mixer is working, the temperature of the heat sink in contact with the heat exchange mechanism at the cold end is relatively low. When the air containing moisture contacts the low-temperature heat sink, condensate water is easily formed on the surface of the heat sink. Every time the dough mixer is lifted, new air will be supplemented, so that condensate water will be continuously generated on the surface of the low-temperature heat sink. When the amount of condensate water accumulated is large, it is easy to cause short circuit of the equipment, which has serious safety hazards. By arranging a condensate water collecting mechanism in the equipment, the condensate water can be guided to the water absorption cloth for collection and drying, so as to avoid the situation that the equipment is short-circuited due to the accumulation and dripping of condensate water.

[0016] The linkage switch is connected with the water absorption cloth, and the linkage switch is provided with a spring reset component. When the cooling fan blows, the water absorption cloth is inflated outward to pull the linkage switch to open the water inlet. When the cooling fan stops blowing, the spring reset component drives the linkage switch to reset to close the water inlet.

[0017] If the water inlet remains open, dust and water vapor in the external air may enter the internal circulation mechanism from the water inlet. By setting the linkage switch, the water inlet is closed when the chef machine is stopped, and the water inlet is opened to discharge condensed water when the cooling fan blows the water absorption cloth. At the same time, the action of the linkage switch can clean the water inlet to prevent flour from accumulating and blocking the water inlet.

[0018] The shape of the water collecting tank is narrow at the inlet and wide at the outlet, so that a negative pressure is formed inside the water collecting tank when the cooling fan blows. Since the water inlet is relatively small, if the condensed water accumulated in the flow guide groove is not much, it may not fall from the water inlet under the action of the water body's own tension. By designing the water collecting tank to have a narrow inlet and a wide outlet, the Bernoulli principle is used to make the water inlet have a pressure directed from the flow guide groove to the water collecting tank when the cooling fan blows into the water collecting tank. The pressure difference of the airflow is used to accelerate the flow of condensed water, so that the condensed water falls, avoiding not falling in the water inlet. In addition, it can also play a role in flushing the water inlet to prevent flour from accumulating in the water inlet.

[0019] The water absorption cloth is provided with a spring locking mechanism. When the water absorption cloth is inflated to the 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. The water absorption cloth is instantaneously tensioned to pop out the dust attached thereto. The cooling fan is reversed to suck away the popped dust.

[0020] Since the water collecting tank is in communication with the external cooling mechanism, the airflow formed by the cooling fan blows from the inlet to the outlet of the water collecting tank. 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 is inflated to the position, ensuring that the condensed water is effectively absorbed. When the cooling fan stops blowing, the spring locking mechanism automatically releases the water absorption cloth. The spring drives the water absorption cloth to be instantaneously tensioned, using the elastic force to pop out the dust absorbed on the water absorption cloth, avoiding the accumulation of dust on the water absorption cloth. Through the instantaneous tensioning of the water absorption cloth and the reversal of the cooling fan, the dust attached to the water absorption cloth can be effectively cleaned, preventing the accumulation of dust inside the equipment.

[0021] The water absorption cloth includes a fixed end and a tensioning end, the fixed end is fixedly connected to the outlet of the water collecting tank, and the tensioning end is provided with a stop block. The spring locking mechanism includes:

[0022] A tensioning spring connected with the tensioning end of the water absorption cloth to tension the water absorption cloth;

[0023] A one-way stop pin for one-way locking of the stop block;

[0024] The release assembly includes a first cylinder and a second cylinder. The second cylinder is disposed in the first cylinder and can slide up and down. The first cylinder and the second cylinder are respectively provided with a first cavity and a second cavity. The first cavity and the second cavity are connected. A return spring is provided 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. The return spring is connected to the one-way stop pin.

[0025] When the absorbent cloth bulges outward, its tensioned end moves against the elastic force of the tension spring. When it moves into place, the stop block is locked by the one-way stop pin. When the cooling fan stops blowing, the tension spring drives the tensioned end of the absorbent cloth to reset. The stop block drives the second cylinder to compress the first chamber through the one-way stop pin. The air in the first chamber is forced into the second chamber, so that the one-way stop pin is driven by the air pressure to retract into the second chamber, thereby causing the one-way stop pin to disengage from the stop block. The absorbent cloth is released to be instantly tensioned under the action of the tension spring.

[0026] An internal circulation cooling motor includes a motor body, a housing, 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 housing. The first and second air ducts form a closed-loop air duct that is not connected to the external environment. The fan blows air to form a closed-loop airflow within the closed-loop air duct to remove 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. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of a food processor with internal circulation cooling according to the present invention.

[0028] Figure 2 This is a three-dimensional sectional view of a food processor with internal circulation cooling according to the present invention (part of the structure is hidden).

[0029] Figure 3 This is an exploded view of a food processor with internal circulation cooling according to the present invention.

[0030] Figure 4 This is a cross-sectional view (partial structure is hidden) of a food processor with internal circulation cooling according to the present invention.

[0031] Figure 5 for Figure 4 Enlarged diagram of point A in the middle.

[0032] Figure 6 for Figure 5 Enlarged diagram of point B in the middle.

[0033] Figure 7 for Figure 5Enlarged view of the release assembly at C.

[0034] Figure 8 Perspective view of the release assembly.

[0035] Figure 9 Exploded view of an internal circulation cooling motor according to the present application.

[0036] Reference signs include:

[0037] 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 dissipation fin 11, flow guide groove 12, water collecting groove 13, inlet 14, outlet 15, water absorbing cloth 16, fixed end 17, tensioning end 18, stop block 19, water inlet 20, linkage switch 21, guide rod 211, rubber plug 212, reset tension spring 22, tensioning spring 23, release assembly 24, one-way stop pin 25, first cylinder 26, first cavity 27, second cylinder 28, second cavity 29, connecting air duct 291, reset spring 30, air vent 31, head lifting mechanism 32, pull rope 33.

[0038] Motor body 34, housing 35, fan 36, heat exchange device 37, first air duct 38. DETAILED DESCRIPTION

[0039] The present application will be described in detail below with specific embodiments.

[0040] In combination Figures 1-3 , the present embodiment provides an internal circulation cooling chef machine, which comprises a housing 1, a motor 2, a head lifting mechanism 32 and a heat dissipation system, the heat dissipation system comprises an internal circulation mechanism, an external heat dissipation mechanism and a heat exchange mechanism, the internal circulation mechanism comprises 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 communicates with the circulation cavity 3, and the circulation fan 5 is used to drive the airflow to flow in a closed loop between the circulation cavity 3 and the circulation air duct 4, the external heat dissipation mechanism comprises a heat dissipation air duct 6 and a heat dissipation fan 7, the heat dissipation air duct 6 communicates with the external environment through an air vent 31, and the heat dissipation fan 7 is arranged in the heat dissipation air duct 6 to drive the airflow to discharge heat to the external environment. A partition is arranged between the circulation cavity 3 and the heat dissipation air duct 6. The heat exchange mechanism of the present embodiment comprises a semiconductor refrigeration sheet 8, in combination Figure 5 , the semiconductor refrigeration sheet 8 comprises a cold end 9 and a hot end 10, heat dissipation fins 11 are arranged on the cold end 9 and the hot end 10, the heat dissipation fins 11 of the cold end 9 are located in the circulation cavity 3 to absorb heat generated by the motor 2, and the heat dissipation fins 11 of the hot end 10 are located in the heat dissipation air duct 6 to blow away heat by the heat dissipation fan 7.

[0041] When the dough mixer is kneading dough, the circulating fan 5 drives the air flow to circulate between the circulating cavity 3 and the circulating air duct 4 to take away the heat generated by the motor 2, the cooling fins 11 of the cold end 9 absorb the heat brought by the air flow and transfer it to the hot end 10, and the cooling fan 7 blows air to the cooling fins 11 of the hot end 10 to discharge the heat to the external environment through the ventilation holes 31.

[0042] When the dough mixer is working, since the cooling system adopts a closed loop circulation design, the circulating air duct 4 and the circulating cavity 3 are not directly connected with the external environment, and the air flow circulating in them to cool the motor 2 only circulates internally, and the circulating fan 5 and the cooling fan 7 will not blow flour and water vapor into the interior of the motor 2 when blowing air, avoiding the problem that in the traditional air cooling cooling system, flour and water vapor enter the interior of the motor 2 through the ventilation holes 31 in the initial stage of kneading dough, reducing the possibility that flour and water vapor form dirt to reduce the cooling efficiency of the motor, and improving the reliability and service life of the equipment.

[0043] The existing dough mixer has the motor 2 arranged at the current position after comprehensive consideration of factors such as equipment size and transmission. However, the arrangement of the motor 2 at this position will cause the circulating air duct and the circulating cavity to be connected with the external environment every time the dough mixer lifts the head to take and place the dough basin after completing kneading dough once (the head-up state of the dough mixer can be referred to Chinese patent document CN215583926U). Although kneading dough has been completed at this time, there is no problem of flour flying, but since the air itself contains a certain amount of moisture, when the dough mixer is working, the temperature of the cooling fins 11 in contact with the cold end 9 of the semiconductor refrigeration fin 8 is relatively low, and when the air containing moisture contacts the cooling fins 11 at low temperature, condensate water is easily formed on the surface of the cooling fins 11. Every time the dough mixer opens the head-up mechanism 32, new air will be supplemented once, so that the surface of the cooling fins 11 at low temperature will continuously produce condensate water, and when the amount of condensate water accumulated is large, it is easy to cause short circuit of the equipment, which exists serious safety hazard. As shown in Figures 5-7 The cooling system further includes a condensate water collecting mechanism, the condensate water collecting mechanism includes a flow guide groove 12 and a water collecting groove 13, the flow guide groove 12 is arranged at the bottom of the cooling fins 11 of the cold end 9, the water collecting groove 13 is used to collect condensate water, the flow guide groove 12 and the water collecting groove 13 are communicated through a water inlet 20, the water collecting groove 13 is provided with an inlet 14 and an outlet 15, the inlet 14 of the water collecting groove 13 is communicated with the cooling air duct 6, and the outlet 15 of the water collecting groove 13 is provided with a water absorption cloth 16. The water absorption cloth 16 is made of a breathable material, so that it can absorb water while allowing air to pass through.

[0044] When the condensed water accumulated on the fins 11 of the cold end 9 slides down, the guide groove 12 guides the condensed water to fall into the water collecting groove 13 through the water passage 20, the water absorbing cloth 16 absorbs the condensed water entering the water collecting groove 13, and the cooling fan 7 blows air to form an air flow from the inlet 14 to the outlet 15 of the water collecting groove 13 to dry the water absorbing cloth 16. By setting the condensed water collecting mechanism in the device, the condensed water can be guided to the water absorbing cloth 16 for collection and dried by the air flow formed by the cooling fan 7, thereby avoiding the short circuit of the device caused by the accumulation and dripping of the condensed water, and also avoiding the need to intentionally pour the condensed water or the situation that the condensed water drips to the bottom of the chef machine.

[0045] 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, which may combine with Figures 5-6 The water absorbing cloth 16 and the water passage 20 are provided with a linkage switch 21, the linkage switch 21 includes a guide rod 211 and a rubber plug 212, the guide rod 211 is fixedly arranged above the water passage 20, the rubber plug 212 is slidably connected with the guide rod 211, the rubber plug 212 is connected with the water absorbing cloth 16 through a pull rope 33, and the linkage switch 21 is further 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 with the guide rod 211, and the other end of the reset tension spring 22 is connected with the rubber plug 212. When the cooling fan 7 blows air, the water absorbing cloth 16 is inflated outward to pull the rubber plug 212 to slide downward to open the water passage 20 through the pull rope 33, and when the cooling fan 7 stops blowing air, the reset tension spring 22 pulls the rubber plug 212 to reset upward to close the water passage 20.

[0046] By setting the linkage switch 21, the water passage 20 is closed when the chef machine is stopped, and the water passage 20 is opened to discharge the condensed water when the cooling fan 7 blows the water absorbing cloth 16, and at the same time, the linkage switch 21 can clean the water passage 20 when opening and closing the water passage 20, thereby avoiding the accumulation and blockage of flour in the water passage 20.

[0047] Since the water passage 20 is relatively small, if the condensed water accumulated in the guide groove 12 is not much, the condensed water may not fall from the water passage 20 under the tension of the water body itself. As shown in Figure 5 The shape of the water collecting groove 13 is that the opening at the inlet 14 is narrow and the opening at the outlet 15 is wide, and a negative pressure is formed in the water collecting groove 13 when the cooling fan 7 blows air. By designing the water collecting groove 13 to have a shape that the inlet is narrow and the outlet is wide, and by using the Bernoulli principle, when the cooling fan 7 blows air to the water collecting groove 13, there is a pressure at the water passage 20 from the guide groove 12 to the water collecting groove 13, the air flow pressure difference is used to accelerate the flow of the condensed water, so that the condensed water falls, and the condensed water does not fall in the water passage 20, in addition, the flow rate of the water flowing through the water passage 20 can be accelerated, which plays a role of flushing the water passage 20, thereby avoiding the accumulation of flour in the water passage 20.

[0048] As the water collecting tank 13 is connected with the external heat dissipation mechanism, the air flow formed by the heat dissipation fan 7 is blown from the inlet 14 to the outlet 15 of the water collecting tank 13, and the dust from the external environment is accumulated on the water absorbing cloth 16 at the outlet 15. The water absorbing cloth 16 is provided with a spring locking mechanism. When the water absorbing cloth 16 is outwardly bulged to the position, the spring locking mechanism locks the water absorbing cloth 16. When the heat dissipation fan 7 stops blowing air to the water absorbing cloth 16, the spring locking mechanism delays to release the water absorbing cloth 16, so that the water absorbing cloth 16 is instantaneously tensioned to pop out the dust adhered thereon (at this time, the water absorbing cloth 16 has been dried) when the water absorbing cloth 16 is released by the spring locking mechanism. At this time, the heat dissipation fan 7 can be reversely set to suck away the popped dust. As shown in Figure 5 and Figure 7 , the water absorbing cloth 16 comprises a fixed end 17 and a tensioned end 18. The fixed end 17 is fixedly connected to the lower end of the outlet 15 of the water collecting tank 13. The tensioned end 18 is provided with a block 19. The spring locking mechanism comprises a tensioning spring 23, a one-way block pin 25 and a release assembly 24. As shown in Figure 3 , the tensioning spring 23 is connected to the block 19 at the tensioned end 18 to be able to upwardly tension the water absorbing cloth 16. The one-way block pin 25 is used to one-way lock the block 19. The one-way block pin 25 can be bent from up to down, but cannot be bent from down to up, that is, when the block 19 moves downwardly, it is not blocked by the one-way block pin 25, and when the block 19 moves upwardly, it is blocked by the one-way block pin 25. In combination with Figures 7-8 , the release assembly 24 comprises a first cylinder body 26 and a second cylinder body 28. The second cylinder body 28 is arranged in the first cylinder body 26 and can slide up and down. The first cylinder body 26 and the second cylinder body 28 are respectively provided with a first cavity 27 and a second cavity 29. The first cavity 27 and the second cavity 29 are communicated through a connecting air channel 291. The second cavity 29 is provided with a reset spring 30. The one-way block pin 25 is slidably connected to the second cavity 29 to be able to extend out of and retract into the second cavity 29. The reset spring 30 is connected to the one-way block pin 25.

[0049] When the water absorbing cloth 16 is outwardly bulged, the tensioned end 18 moves downwardly against the elastic force of the tensioning spring 23. When the tensioned end 18 and the block 19 move downwardly to the position, the block 19 is clamped and locked by the one-way block pin 25 and cannot be reset upwardly. When the heat dissipation fan 7 stops blowing, the tensioning spring 23 applies upward elastic force to the tensioned end 18 of the water absorbing cloth 16. The block 19 pushes the one-way block pin 25 upwardly under the elastic force of the tensioning spring 23. The one-way block pin 25 further pushes the second cylinder body 28 to compress the first cavity 27. The air in the first cavity 27 is compressed to the second cavity 29, so that the one-way block pin 25 is driven to retract into the second cavity 29 by the air pressure. After a period of time, the one-way block pin 25 is out of contact with the block 19 to unlock the block 19. The water absorbing cloth 16 is instantaneously tensioned to pop out the dust adhered thereon under the action of the tensioning spring 23. At this time, the heat dissipation fan 7 is reversely set to form reverse air flow to suck away the popped dust.

[0050] By setting the spring locking mechanism, when the heat dissipation fan 7 stops blowing, the spring locking mechanism automatically releases the water absorption cloth 16, the tension spring 23 drives the water absorption cloth 16 to be instantaneously tensioned, and the dust adsorbed on the water absorption cloth 16 is ejected by using the elastic force, so that the dust is prevented from accumulating on the water absorption cloth 16. Through the instantaneous tensioning of the water absorption cloth 16 and the reverse rotation of the heat dissipation fan 7, the dust attached to the water absorption cloth 16 can be effectively cleaned, and the dust is prevented from accumulating in the equipment.

[0051] As shown in Figure 9 The motor 2 provided by the embodiment is an internal circulation heat dissipation motor, which comprises a motor body 34, a shell 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 shell 35 and is enclosed by the shell 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 with the external environment. The fan 36 blows air to form a closed loop air flow in the closed loop air duct to carry away the heat generated by the motor body 34. The heat exchange device 37 comprises 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 the heat to the external environment through the hot end 10. It is worth noting that the chef machine provided by the above embodiment directly uses the shell 1 of the chef machine to replace the shell 35 of the internal circulation heat dissipation motor 2 in the embodiment, and the circulation cavity 3 enclosed by the shell 1 and the motor 2 replaces the second air duct, thereby simplifying the structure of the equipment.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the scope of protection of the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present application.

Claims

1. A kitchen machine with internal circulation of heat dissipation, comprising a housing, a motor, a lifting mechanism and a heat dissipation system, characterized in that, The heat dissipation system comprises: an internal circulation mechanism comprising a circulation cavity, a circulation air duct and a circulation fan, the circulation cavity is enclosed by a 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 airflow to flow in a closed loop between the circulation cavity and the circulation air duct; an external heat dissipation mechanism comprising a heat dissipation air duct and a heat dissipation fan, the heat dissipation air duct communicates with the external environment, and the heat dissipation fan is arranged in the heat dissipation air duct to drive the airflow to discharge heat to the external environment; a heat exchange mechanism comprising a cold end and a hot end, the cold end and the hot end are both provided with heat dissipation fins, the heat dissipation fins of the cold end are located in the circulation cavity to absorb the heat generated by the motor, and the heat dissipation fins of the hot end are located in the heat dissipation air duct to blow away the heat by the heat dissipation fan; when the chef kneads the dough, the circulation fan drives the airflow 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 of the cold end absorb the heat brought by the airflow and transfer it to the hot end, and the heat dissipation fan blows air to the heat dissipation fins of the hot end to discharge the heat to the external environment; The heat dissipation system further comprises a condensate water collection mechanism, which comprises: a guide groove arranged at the bottom of the heat dissipation fins of the cold end for guiding the condensate water to flow into the water collecting tank; a water collecting tank for collecting condensate water, the guide groove and the water collecting tank communicate through a water inlet, the water collecting tank is provided with an inlet and an outlet, the inlet of the water collecting tank communicates with the heat dissipation air duct, and the outlet of the water collecting tank is provided with a water absorption cloth; When the condensate water accumulated on the heat dissipation fins of the cold end slides off, the guide groove guides the condensate water to fall into the water collecting tank through the water inlet, the water absorption cloth absorbs the condensate water entering the water collecting tank, and the heat dissipation fan blows air to form an airflow from the inlet to the outlet of the water collecting tank to dry the water absorption cloth; The water absorption cloth is provided with a spring locking mechanism, when the water absorption cloth is inflated in place, the spring locking mechanism locks the water absorption cloth, when the heat dissipation fan stops blowing air to the water absorption cloth, the spring locking mechanism releases the water absorption cloth, the water absorption cloth is instantaneously tensioned to pop out the dust attached thereto, and the heat dissipation fan is reversed to suck away the popped dust.

2. A motor internal circulation heat dissipation food processor according to claim 1, characterized in that, A linkage switch is arranged between the water absorption cloth and the water inlet, the linkage switch is connected with the water absorption cloth, the linkage switch is provided with a spring reset assembly, when the heat dissipation fan blows air, the water absorption cloth is inflated outward to pull the linkage switch to open the water inlet, and when the heat dissipation fan stops blowing air, the spring reset assembly drives the linkage switch to reset to close the water inlet.

3. A motor internal circulation heat dissipation food processor according to claim 1, wherein, The shape of the water collecting tank is narrow at the inlet and wide at the outlet, so that a negative pressure is formed in the water collecting tank when the heat dissipation fan blows air.

4. The motor internal circulation heat dissipation food processor according to claim 1, wherein, The water absorption cloth comprises a fixed end and a tensioning end, the fixed end is fixedly connected to the outlet of the water collecting tank, and the tensioning end is provided with a stop block, the spring locking mechanism comprises: a tensioning spring connected with the tensioning end of the water absorption cloth to tension the water absorption cloth; a one-way stop pin for one-way locking the stop block; a release assembly comprising a first cylinder and a second cylinder, the second cylinder is arranged in the first cylinder and can slide up and down, the first cylinder and the second cylinder are respectively provided with a first cavity and a second cavity, the first cavity and the second cavity communicate, the second cavity is provided with a reset spring, the one-way stop pin is slidably connected to the second cavity and can extend out of and retract into the second cavity, and the reset spring is connected with the one-way stop pin. When the water absorption cloth is inflated, the tension end of the water absorption cloth is moved against the elastic force of the tension spring, and when the tension end is moved to the position, the stop block is locked by the one-way stop pin, and when the cooling fan stops blowing, the tension spring drives the tension end of the water absorption cloth to reset, and the stop block drives the second cylinder body to compress the first cavity through the one-way stop pin, and the air in the first cavity is compressed to the second cavity, so that the one-way stop pin is driven to retract into the second cavity by the air pressure, so that the one-way stop pin is out of contact with the stop block, and the water absorption cloth is released to be instantaneously tensioned under the action of the tension spring.

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