Chef machine for kneading dough

Abstract

A chef machine for dough kneading relates to the technical field of chef machines and comprises a driving motor, a dough kneading basin, a stirring hook, a connecting shaft and a circulating water cooling device. The connecting shaft is in transmission connection with an output shaft of the driving motor and is detachably connected with the stirring hook. A cooling cavity and a water return pipeline are arranged in the stirring hook, and the connecting shaft is provided with a first channel and a second channel. The circulating water cooling device comprises cooling liquid, a water pump, a circulating pipeline and a temperature control assembly. During working, the water pump drives cooling liquid to circulate between the temperature control container and the stirring hook, heat of the stirring hook is absorbed, the semiconductor temperature control chip refrigerates to cool the cooling liquid, and then heat is dissipated through the cooling fins and the cooling fan. According to the cook machine provided by the technical scheme, the temperature of the stirring hook can be effectively reduced, and the cooling effect on the friction heating part of the stirring hook is better.

Description

Technical Field

[0001] The present invention relates to the technical field of chef machines, and in particular to a chef machine for kneading dough. Background Art

[0002] A chef machine is a multifunctional kitchen appliance, usually driven by an electric motor, that can complete many tasks that need to be done manually in traditional kitchens, such as stirring, mixing, chopping, beating egg whites, and kneading dough. When the chef machine is kneading dough, its stirring hook contacts the dough and stirs and kneads it. Friction will occur between the stirring hook and the dough, and between the dough and the dough bowl. Friction will convert mechanical energy into heat energy, which will gradually increase the temperature of the dough. To a certain extent, a proper temperature increase helps the fermentation of the dough, but as the kneading time increases, the total number of frictions increases, and the heat generated will accumulate, resulting in excessive temperature. Excessive temperature may kill the yeast. For dough that needs to be fermented, this will prevent the fermentation process from proceeding normally. At the same time, if the temperature is too high, it will also affect the formation of gluten, thereby affecting the quality of the dough. In order to alleviate the problem of rising dough temperature, traditional technology usually takes cooling measures for the dough bowl, but there is no cooling measure between the stirring hook and the dough, and the cooling effect is not ideal. Summary of the invention

[0003] In view of this, the present invention provides a food processor for kneading dough, which can cool down a stirring hook when kneading dough, and has a better cooling effect on the heat-generating part of the stirring hook and the dough.

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

[0005] A chef machine for kneading dough, comprising a driving motor, a dough mixing basin, a stirring hook, a connecting shaft and a circulating water cooling device, wherein the connecting shaft is drivingly connected to the output shaft of the driving motor, the end of the connecting shaft is detachably connected to the stirring hook, a cooling chamber and a return water pipeline connected to each other are provided inside the stirring hook, a first channel connected to the cooling chamber and a second channel connected to the return water pipeline are respectively provided on the connecting shaft, and the circulating water cooling device comprises: Coolant; a water pump having an inlet and an outlet; The circulation pipeline includes a water pumping pipeline and a water supply pipeline, wherein the water pumping pipeline is connected to the second channel of the connecting shaft, and the water supply pipeline is connected to the first channel of the connecting shaft; The temperature control component is used to adjust the temperature of the coolant, including a semiconductor temperature control sheet, a temperature control container, a heat sink and a heat dissipation fan. One side of the semiconductor temperature control sheet is attached to the temperature control container, and the other side is attached to the heat sink. The other side of the heat sink is attached to the heat dissipation fan. The temperature control container is provided with a water inlet. The inlet of the water pump is connected to the water pumping pipeline. The outlet of the water pump is connected to the inlet of the temperature control container. The outlet of the temperature control container is connected to the water supply pipeline. When the stirring hook is kneading dough, the water pump drives the coolant to flow from the temperature control container to the cooling chamber of the stirring hook to absorb the heat of the stirring hook, and flows back to the temperature control container from the return water pipe. The semiconductor temperature control sheet passes a positive current to cool the side that fits the temperature control container, so as to absorb the heat of the coolant flowing through the temperature control container to reduce its temperature, and transfer the heat to the heat sink. The cooling fan blows the heat of the heat sink to the outside. When the stirring hook is kneading dough, the coolant in the cooling chamber can absorb the heat generated by the stirring hook, and the coolant can continuously take away the absorbed heat during the circulation process, and use the cooperation between the temperature control container, the semiconductor temperature control sheet and the heat sink to dissipate the heat, thereby effectively reducing the temperature of the stirring hook, and having a better cooling effect on the friction heat generating part of the stirring hook.

[0006] Among them, it also includes a transmission mechanism, which includes: A coupling block, which includes a boss end and a platform end, both of which are provided with through holes, the output shaft of the driving motor is fixedly connected to the through hole of the boss end, the connecting shaft passes through the through hole of the platform end and can rotate, the coupling block is also provided with a first intermediate channel, a second intermediate channel and two rotating joints, the two ends of the first intermediate channel are respectively connected to the first channel and the water supply pipeline through the two rotating joints, and the two ends of the second intermediate channel are respectively connected to the second channel and the water pumping pipeline through the two rotating joints; A planetary gear set, comprising a ring gear and planetary wheels, the ring gear meshes with the planetary wheels, and a connecting shaft is fixedly connected to the planetary wheels; When the stirring hook is kneading dough, the driving motor drives the coupling block to rotate, so as to drive the planetary gear and the connecting shaft to revolve around the output shaft of the driving motor, and the planetary gear rotates to drive the stirring hook to rotate. The water pump drives the coolant to flow to the cooling chamber through the water supply pipeline, the first intermediate channel, and the first channel, and flows back to the temperature control container through the return pipeline, the second channel, the second intermediate channel and the pumping pipeline. The motion trajectory of the stirring hook is realized by the planetary gear transmission structure, and the action of manual dough kneading is simulated to fully mix the flour and water and other raw materials. Compared with the traditional single rotation method of stirring, the uniformity and efficiency of dough kneading can be improved, and the quality of the dough produced is better. If it is connected through an external pipeline, it will occupy a lot of space inside the chef machine and affect the layout of other structures. By setting a rotary joint and setting a channel inside the transmission component, the water pump is used to realize the circulation of the coolant between the temperature control container and the stirring hook. The structure is compact, no other space needs to be occupied, and the connection of each pipeline will not be difficult due to rotation.

[0007] The invention also includes a leakage protection device, which includes a first solenoid valve for controlling the connection and disconnection of the water supply pipeline, and the first solenoid valve includes: a first electromagnetic coil; A first valve body, wherein an upper chamber and a lower chamber are provided inside the first valve body, the upper chamber is provided with a first vent hole communicating with the outside, the lower chamber is provided with an inlet and an outlet, and the upstream part and the downstream part of the water supply pipeline are respectively communicated with the inlet and the outlet of the lower chamber; A vent piston, which is slidably connected to the first valve body so as to block the inlet and outlet of the lower chamber, the vent piston is provided with a one-way airway, a one-way vent valve is provided in the one-way airway, and the communication direction of the one-way airway is from the upper chamber to the outlet of the lower chamber; A return spring, one end of which is connected to the top of the upper chamber, and the other end of which is connected to the ventilation piston; When the stirring hook is kneading the dough, the first electromagnetic coil is energized to drive the ventilation piston to move to the upper chamber to open the inlet and outlet of the lower chamber so that the upstream and downstream parts of the water supply pipeline are connected. When the stirring hook needs to be disassembled, the first electromagnetic coil is de-energized, and the return spring pushes the ventilation piston to move to the top of the lower chamber to block the inlet and outlet of the lower chamber, so that the upstream and downstream parts of the water supply pipeline are disconnected, and the coolant in the temperature control container cannot flow out. At this time, the water pump continues to work, and the external air flow enters from the first vent hole and pushes open the one-way ventilation valve. The one-way airway connects the outlets of the upper chamber and the lower chamber, so that the coolant in the downstream part of the water supply pipeline, the first channel, the second channel and the stirring hook is drawn back into the temperature control container.

[0008] By setting the first solenoid valve, when the stirring hook needs to be disassembled, the first solenoid valve is controlled to disconnect the upstream and downstream parts of the water supply pipeline, while the water pump continues to work to pump the coolant at other positions back into the temperature control container, thereby avoiding leakage of coolant when the stirring hook is disassembled, ensuring the cleanliness of the environment around the equipment, and also avoiding waste of coolant. By setting the first vent hole, the one-way airway and the one-way vent valve, the pipeline system is connected to the external air, ensuring that the coolant in the downstream part of the water supply pipeline, the first channel, the second channel and the stirring hook can be smoothly pumped back into the temperature control container.

[0009] The leakage protection device further includes a temporary storage container and a second solenoid valve. The staging containers include: The container body has a water inlet at the top and a second air vent at the bottom that communicates with the outside; A water pumping piston, which is slidably connected to the container body; A reset tension spring, one end of which is connected to the water pumping piston, and the other end of which is connected to the bottom of the container body; The second solenoid valve comprises: A second valve body is provided with an inlet P, an outlet A and an outlet B, wherein the inlet P is communicated with the inlet of the water pump, the outlet A is communicated with the water through-port of the container body, and the outlet B is communicated with the water pumping pipeline; The second valve core is slidably connected to the second valve body and is provided with three working positions, namely, a left position, a middle position and a right position. The second valve core is provided with three different connecting channels corresponding to the three working positions of the second valve core, wherein when the second valve core is in the left position, the inlet of the water pump is connected to the water pumping pipeline, when the second valve core is in the right position, the inlet of the water pump is connected to the water outlet of the container body, and when the second valve core is in the middle position, the water outlet of the container body is connected to the water pumping pipeline; Two second electromagnetic coils are provided, respectively used to drive the second valve core to the left position and the right position; Two neutral springs are provided, both of which are connected to the second valve core and are respectively located at two ends of the second valve body, so as to push the second valve core to return to the neutral position; When the stirring hook is kneading dough, the second electromagnetic coil drives the second valve core to move to the left position, the inlet of the water pump is connected to the water pumping pipeline, and the circulating water cooling device works normally; When the food processor is powered off, the second electromagnetic coil releases the second valve core, the middle spring pushes the second valve core to return to the middle position, the water port of the container body is connected to the water pumping pipeline, and the reset tension spring pulls the water pumping piston to pump the stirring hook, the connecting shaft and the coolant in the circulation pipeline into the container body; When the food processor is powered on again, the second electromagnetic coil drives the second valve core to move to the right position, the inlet of the water pump is connected to the water port of the container body, the water pump pumps the coolant in the container body to the temperature control container, and draws up the pumping piston to stretch the reset spring.

[0010] If the stirring hook is removed when the food processor is powered off, the water pump will not work. Even if the first solenoid valve closes the water supply line, the remaining coolant in the stirring hook and the connecting shaft will still leak, resulting in low reliability of the equipment. By setting a second solenoid valve and a temporary storage container that does not require electrical drive, when the food processor is powered off, the middle spring pushes the second valve core to reset to the middle position, so that the water port of the container body is connected to the pumping pipeline. At the same time, the reset tension spring pulls the pumping piston to pump the coolant in the stirring hook and the connecting shaft into the container body, thereby preventing the coolant from leaking to the outside when the stirring hook is removed after the food processor is powered off, avoiding the waste of coolant and pollution to the equipment and the surrounding environment, and improving the reliability of the equipment. When the food processor is powered on again, the electromagnetic coil drives the second valve core to move to the right position, and the inlet of the water pump is connected to the water port of the container body. The water pump can pump the coolant in the container body to the temperature control container, and suck up the pumping piston to stretch the reset tension spring, thereby ensuring that the temporary storage container can work normally next time.

[0011] Among them, after the stirring hook and dough are kneaded, the semiconductor temperature control piece can also pass reverse current to heat the side that fits the temperature control container, so as to increase the temperature of the coolant flowing through the temperature control container. When the connecting shaft, stirring hook and various pipelines and other components have a temperature difference with the air, a layer of water film will condense on their surface. Although the condensed water film in a short time will not have much impact on the dough or equipment, when the circulating water cooling device works for a long time, the temperature difference between the above components and the air is large. When the air humidity is high, more condensed water is easily generated on their surface, especially in the humid rainy season in the south, which makes the equipment prone to rust and corrosion. The flying flour particles mixed with condensed water during dough kneading will also make it more difficult to clean the equipment, and the mixed particles will contaminate the dough after falling into the dough bowl. After the dough is kneaded, the semiconductor temperature control piece is heated by reverse current to increase the temperature of the coolant flowing through the temperature control container, which helps to reduce the generation of condensed water and accelerate the evaporation of condensed water, thereby reducing the risk of rust and corrosion of the equipment due to the adhesion of condensed water. At the same time, the chef machine can work stably under different environmental conditions. Whether in the humid southern region or in the seasonal transition period with large temperature differences, it can operate normally, broadening the scope of application of the equipment.

[0012] It also includes a blocking component, a reflux cavity and a sliding groove are provided at the end of the connecting shaft, and the blocking component includes: A barrier valve core is slidably connected with the sliding groove and extends into the reflux cavity, and divides the reflux cavity into a first cavity and a second cavity, the inlet and outlet of the first cavity are respectively connected with the first channel and the cooling cavity, the inlet and outlet of the second cavity are respectively connected with the second channel and the return water pipeline, and a reflux hole connecting the first cavity and the second cavity is provided on the barrier valve core; A push spring, one end of which is connected to the reflux valve core, and the other end of which is connected to the top of the reflux cavity; The sliding groove is provided with an upper limit position and a lower limit position, and the blocking valve core can slide between the upper limit position and the lower limit position; When the stirring hook is connected to the connecting shaft, the top of the stirring hook is inserted into the reflux cavity and pushes the blocking valve core to retract to the upper limit position. At this time, the reflux hole is blocked, and the outlets of the first cavity and the second cavity are both opened. The coolant flows into the cooling cavity through the first channel and the first cavity, and flows to the second channel through the return water pipeline and the second cavity; When the stirring hook is disassembled and separated from the connecting shaft, the push spring pushes the reflux valve core to extend to the lower limit position. At this time, the reflux hole is opened, the first cavity and the second cavity are connected, and the outlets of the first cavity and the second cavity are both blocked. The coolant flows directly from the first cavity to the second cavity through the first channel, and flows back to the second channel.

[0013] After kneading the dough, if the stirring hook is directly removed for cleaning, the coolant in the circulating water cooling device will stop circulating. When it is necessary to reduce the condensed water, the stirring hook must be inserted back into the connecting shaft so that the coolant can continue to circulate. It is not possible to reduce the condensed water while cleaning the stirring hook, which is inefficient. By setting up a barrier component, the circulation of the coolant will not be interrupted after the stirring hook is removed, and coolant leakage is avoided. Even in the process of removing, cleaning or replacing the stirring hook, the circulating water cooling device can still maintain normal operation to continuously heat the coolant to remove the condensed water.

[0014] Among them, a tray is provided at the upper end of the stirring hook to receive the coolant that may leak from the connection between the connecting shaft and the stirring hook. During the process of kneading dough in the chef machine, if the coolant leaks from the connection between the connecting shaft and the stirring hook, it may flow into other parts inside the chef machine, which may not only cause corrosion to these parts, affecting their normal operation and service life, but may also cause electrical failures and pose a safety hazard. At the same time, once the coolant drips into the flour or the dough being stirred, it will directly contaminate the ingredients. After setting up the tray, it can effectively receive the coolant that may leak, ensuring that ingredients such as flour and dough are not contaminated by the leaked coolant. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the chef machine of the present invention.

[0016] Figure 2 It is a schematic diagram of the three-dimensional structure of the chef machine of the present invention hidden behind the wash basin.

[0017] Figure 3 The chef machine of the present invention is Figure 2 Cross-sectional view of the state.

[0018] Figure 4 for Figure 3 A magnified schematic diagram of center A.

[0019] Figure 5 for Figure 3 A magnified schematic diagram of point B in the middle.

[0020] Figure 6 It is a schematic diagram of the three-dimensional structure of the chef machine of the present invention after some structures are hidden.

[0021] Figure 7 for Figure 6 Exploded view of the structure.

[0022] Figure 8 It is a cross-sectional view of the second solenoid valve and part of the pipeline.

[0023] Fig. 9 A cross-sectional view of a temporary storage container Fig.10 Exploded view of the planetary gear, connecting shaft, rotary joint and coupling block.

[0024] Fig.11 It is a three-dimensional structural cross-sectional view of the planetary gear, connecting shaft, rotating joint, coupling block and circulation pipeline.

[0025] Fig.12 for Fig.11 Enlarged schematic diagram of point C in the middle.

[0026] Fig.13 It is a sectional view of the three-dimensional structure of the second solenoid valve.

[0027] Reference numerals include: Stirring hook 1, cooling chamber 11, water return pipe 12, tray 13; Connecting shaft 2, first channel 21, second channel 22, first cavity 23, second cavity 24, sliding groove 25, first groove 26; Water pump 3, water pumping pipeline 31, water supply pipeline 32, Temperature control component 4, semiconductor temperature control sheet 41, temperature control container 42, water injection port 421, heat sink 43, heat dissipation fan 44; Transmission mechanism 5, coupling block 51, boss end 511, platform end 512, first intermediate channel 513, second intermediate channel 514, rotary joint 515, second groove 516, ring gear 52, planetary gear 53; A first solenoid valve 6, a first valve body 61, a first vent hole 611, a vent piston 62, a one-way air passage 621, a one-way vent valve 622, and a return spring 63; A second solenoid valve 7, a second valve body 71, a second valve core 72, and a neutral spring 73; Temporary storage container 8, container body 81, water port 811, second vent hole 812, water pumping piston 82, reset spring 83; Isolation valve core 9, push spring 91, return hole 92; Driving motor 10 , output shaft 101 , and basin 14 . DETAILED DESCRIPTION

[0028] The present invention is described in detail below in conjunction with specific embodiments.

[0029] Combination Figure 1-Figure 6 The chef machine of this embodiment includes a driving motor 10, a transmission mechanism 5, a basin 14, a stirring hook 1, a connecting shaft 2 and a circulating water cooling device, combined with Figure 6-Figure 7The connecting shaft 2 is connected to the output shaft 101 of the driving motor 10 through a transmission mechanism 5, and the end of the connecting shaft 2 is detachably connected to the stirring hook 1. In this embodiment, the connecting shaft 2 and the stirring hook 1 adopt a detachable connection structure in the form of a clamping column and a clamping groove. Figure 5 and Figure 7 The stirring hook 1 is hollow and has a cooling chamber 11, a return water pipe 12 is arranged inside the cooling chamber 11, the inlet of the return water pipe 12 extends to the bottom of the cooling chamber 11 and is connected to the cooling chamber 11, and the connecting shaft 2 is respectively provided with a first channel 21 connected to the cooling chamber 11 and a second channel 22 connected to the return water pipe 12, specifically, the first channel 21 is connected to the opening at the top of the cooling chamber 11, and the second channel 22 is connected to the outlet of the return water pipe 12.

[0030] Combination Figure 6-Figure 7 The circulating water cooling device includes a coolant, a water pump 3, a circulating pipeline and a temperature control component 4. The water pump 3 is provided with an inlet and an outlet. The circulating pipeline includes a pumping pipeline 31 and a water supply pipeline 32. The pumping pipeline 31 is connected to the second channel 22 of the connecting shaft 2, and the water supply pipeline 32 is connected to the first channel 21 of the connecting shaft 2. The temperature control component 4 includes a semiconductor temperature control sheet 41, a temperature control container 42, a heat sink 43 and a cooling fan 44. One side of the semiconductor temperature control sheet 41 is attached to the temperature control container 42, and the other side is attached to the heat sink 43. The other side of the heat sink 43 is attached to the cooling fan 44. The temperature control container 42 is provided with a water injection port 421 for adding coolant. The inlet of the water pump 3 is connected to the pumping pipeline 31, the outlet of the water pump 3 is connected to the inlet of the temperature control container 42, and the outlet of the temperature control container 42 is connected to the water supply pipeline 32.

[0031] Combination Figure 6-Figure 7 and Fig.10 The transmission mechanism 5 includes a coupling block 51 and a planetary gear set. The coupling block 51 includes a boss end 511 and a platform end 512. Both the boss end 511 and the platform end 512 are provided with through holes. The output shaft 101 of the driving motor 10 is inserted into the through hole of the boss end 511 and fixedly connected thereto. The connecting shaft 2 passes through the through hole of the platform end 512 and is rotatably connected thereto. Figure 10-11The coupling block 51 is also provided with a first intermediate channel 513, a second intermediate channel 514 and two rotary joints 515. The two rotary joints 515 are respectively sleeved on the connecting shaft 2 and the boss end 511. The connecting shaft 2 is provided with two annular grooves 26. The first channel 21 and the second channel 22 are respectively connected to the two first grooves 26. After a rotary joint 515 is sleeved on the connecting shaft 2, the two first grooves 26 are closed. The two first grooves 26 are both provided with openings (provided on the rotary joint 515) so that the two first grooves The groove 26 is connected to the first intermediate channel 513 and the second intermediate channel 514 respectively. The boss end 511 is provided with two annular second grooves 516. The first intermediate channel 513 and the second intermediate channel 514 are connected to the two second grooves 516 respectively. After another rotary joint 515 is sleeved on the boss end 511, the two second grooves 516 are closed. The two second grooves 516 are both provided with openings (provided on the rotary joint 515) so that the two second grooves 516 are respectively connected to the water pumping pipeline 31 and the water supply pipeline 32. In this way, the circulation pipeline can flow through the rotating coupling block 51 and the connecting shaft 2, solving the problem of being unable to lay pipelines.

[0032] like Figure 7 As shown, the planetary gear set includes a ring gear 52 and planetary wheels 53 . The ring gear 52 is fixedly arranged, the planetary wheels 53 are meshed with the ring gear 52 , and the connecting shaft 2 is fixedly connected to the planetary wheels 53 .

[0033] When the stirring hook 1 is kneading dough, the driving motor 10 drives the coupling block 51 to rotate, so as to drive the planetary gear 53 and the connecting shaft 2 to revolve around the output shaft 101 of the driving motor 10, and the planetary gear 53 rotates to drive the stirring hook 1 to rotate, and the water pump 3 drives the coolant to flow to the cooling chamber 11 through the water supply pipeline 32, the first intermediate channel 513, and the first channel 21, and flows back to the temperature control container 42 through the return pipeline 12, the second channel 22, the second intermediate channel 514 and the pumping pipeline 31. The coolant circulates between the temperature control container 42 and the stirring hook 1, and the semiconductor temperature control sheet 41 cools the side that is in contact with the temperature control container 42 through the forward current, so as to reduce the temperature of the coolant flowing through the temperature control container 42.

[0034] When the stirring hook 1 is kneading dough, the coolant in the cooling chamber 11 can absorb the heat generated by the stirring hook 1, and the coolant can continuously take away the absorbed heat during the circulation process, and use the cooperation between the temperature control container 42, the semiconductor temperature control plate 41, the heat sink 43 and the cooling fan 44 to dissipate the heat into the air, so that the temperature of the stirring hook 1 can be effectively reduced, and the cooling effect on the friction heat generating part of the stirring hook 1 is better. The motion trajectory of the stirring hook 1 is realized by the planetary gear transmission structure, which can simulate the action of manual dough kneading, so that flour and water and other raw materials are fully mixed. Compared with the traditional single rotation method of stirring, the uniformity and efficiency of dough kneading can be improved, and the quality of the dough produced is better. Secondly, if it is connected through an external pipeline, it will occupy a lot of space inside the chef machine, affecting the layout of other structures. By setting a rotary joint 515 and setting a channel inside the coupling block 51, the water pump 3 is used to realize the circulation of the coolant between the temperature control container 42 and the stirring hook 1. The structure is compact, no other space needs to be occupied, and it will not be difficult to connect each pipeline due to rotation.

[0035] After kneading the dough, if the stirring hook 1 is directly removed, the coolant will leak out from the channel of the connecting shaft 2, causing waste of coolant, contamination of the dough, and even possible damage to the appliance. Figure 3-Figure 4 The present embodiment of a dough mixer also includes a leakage protection device, such as Figure 7 As shown, the leakage protection device includes a first solenoid valve 6 for controlling the connection and disconnection of the water supply pipeline 32, combined with Figure 4 The first solenoid valve 6 includes a first solenoid coil, a first valve body 61, a vent piston 62 and a return spring 63. An upper chamber and a lower chamber are provided inside the first valve body 61. Specifically, the vent piston 62 divides the cavity inside the first valve body 61 into an upper chamber and a lower chamber, and their spaces are expanded or compressed as the vent piston 62 moves. The upper chamber is provided with a first vent hole 611 connected to the outside, and the lower chamber is provided with an inlet and an outlet. The upstream part and the downstream part of the water supply pipeline 32 are respectively connected to the inlet and the outlet of the lower chamber. The vent piston 62 is slidably connected to the first valve body 61 to block the inlet and the outlet of the lower chamber. When the vent piston 62 completely compresses the lower chamber, the inlet and the outlet of the lower chamber are equivalent to being blocked. The vent piston 62 is provided with a one-way airway 621, and a one-way vent valve 622 is provided in the one-way airway 621. The connection direction of the one-way airway 621 is from the upper chamber to the outlet of the lower chamber. One end of the return spring 63 is connected to the top of the upper chamber, and the other end is connected to the ventilation piston 62 .

[0036] When the stirring hook 1 is kneading the dough, the first electromagnetic coil is energized to drive the ventilation piston 62 to move to the upper chamber to open the inlet and outlet of the lower chamber so that the upstream and downstream parts of the water supply pipe 32 are connected. When the stirring hook 1 needs to be disassembled, the first electromagnetic coil is de-energized, and the return spring 63 pushes the ventilation piston 62 to move to the top of the lower chamber to block the inlet and outlet of the lower chamber, so that the upstream and downstream parts of the water supply pipe 32 are disconnected, and the coolant in the temperature control container 42 cannot flow out. At this time, the water pump 3 continues to work, and the external air flow enters from the first vent hole 611 and pushes open the one-way vent valve 622, so that the water supply pipe 32 is connected with the external atmosphere, and the coolant in the downstream part of the water supply pipe 32, the first channel 21, the second channel 22 and the stirring hook 1 can be smoothly pumped back into the temperature control container 42.

[0037] By setting the first solenoid valve 6, when the stirring hook 1 needs to be disassembled, the first solenoid valve 6 is controlled to disconnect the upstream and downstream parts of the water supply pipeline 32, and the coolant in the temperature control container 42 cannot flow out. At the same time, the water pump 3 continues to work to pump the coolant at other positions back into the temperature control container 42, thereby avoiding the leakage of the coolant when the stirring hook 1 is disassembled, ensuring the cleanliness of the environment around the equipment, and also avoiding the waste of coolant. By setting the first vent hole 611, the one-way airway 621 and the one-way vent valve 622, the pipeline system is connected to the external atmosphere, ensuring that the coolant in the downstream part of the water supply pipeline 32, the first channel 21, the second channel 22 and the stirring hook 1 can be smoothly pumped back into the temperature control container 42.

[0038] If the stirring hook 1 is disassembled when the food processor is powered off, for example, the power plug is unplugged after use, the water pump 3 will not work. Even if the first solenoid valve 6 closes the water supply pipeline 32, the coolant in the downstream part of the water supply pipeline 32, the first channel 21, the second channel 22 and the stirring hook 1 cannot be pumped out. The remaining coolant in the stirring hook 1 and the connecting shaft 2 will still leak, resulting in low reliability of the device. Figure 6-Figure 9 The leakage protection device further comprises a temporary storage container 8 and a second solenoid valve 7. The temporary storage container 8 comprises a container body 81, a water pumping piston 82 and a reset spring 83. The top of the container body 81 is provided with a water inlet 811, and the bottom is provided with a second vent hole 812 communicating with the outside. The water pumping piston 82 is slidably connected in the container body 81. One end of the reset spring 83 is connected to the water pumping piston 82, and the other end is connected to the bottom of the container body 81.

[0039] Combination Figure 8 and Fig.13The second solenoid valve 7 includes a second valve body 71, a second valve core 72, a second solenoid coil and a neutral spring 73. The second valve body 71 is provided with an inlet P, an outlet A and an outlet B, wherein the inlet P is communicated with the inlet of the water pump 3, the outlet A is communicated with the water passage 811 of the container body 81, and the outlet B is communicated with the water pumping pipeline 31. The second valve core 72 is arranged in the second valve body 71 and can slide in the second valve body 71. A channel is arranged inside the second valve core 72. The second valve core 72 is provided with three working positions, namely, a left position, a middle position and a right position, and three different connecting channels are provided to correspond to the three working positions of the second valve core 72 respectively. When the second valve core 72 is in the left position, the channel in the second valve core 72 connects the inlet P and the outlet B, so that the inlet of the water pump 3 connects to the water pumping pipeline 31. When the second valve core 72 is in the right position, the channel in the second valve core 72 connects the inlet P and the outlet A, so that the inlet of the water pump 3 connects to the water port 811 of the container body 81. When the second valve core 72 is in the middle position, the channel in the second valve core 72 connects the outlet A and the outlet B, so that the water port 811 of the container body 81 connects to the water pumping pipeline 31. Two second electromagnetic coils are provided, which are respectively used to drive the second valve core 72 to the left position and the right position. Two neutral springs 73 are provided, which are both connected to the second valve core 72 and are respectively located at the two ends of the second valve body 71, so that the second valve core 72 can be pushed to reset to the middle position when the second electromagnetic coil is powered off.

[0040] When the stirring hook 1 is kneading dough, the second electromagnetic coil drives the second valve core 72 to move to the left position, and the inlet of the water pump 3 is connected to the water pumping pipeline 31. The water pump 3 can drive the coolant to circulate in the temperature control container 42 and the stirring hook 1, so that the circulating water cooling device can work normally; when the food processor is powered off, the second electromagnetic coil is powered off to release the second valve core 72, and the middle spring 73 pushes the second valve core 72 to return to the middle position, and the water port 811 of the container body 81 is connected to the water pumping pipeline 31, and the reset tension spring 83 pulls the water pumping piston 82 to pump the coolant in the stirring hook 1, the connecting shaft 2 and the circulating pipeline into the container body 81; when the food processor is powered on again, the second electromagnetic coil drives the second valve core 72 to move to the right position, and the inlet of the water pump 3 is connected to the water port 811 of the container body 81, and the water pump 3 pumps the coolant in the container body 81 to the temperature control container 42, and pulls up the water pumping piston 82 to stretch the reset tension spring 83. After the water pump 3 pumps out all the coolant in the container body 81 , the second electromagnetic coil drives the second valve core 72 to move to the left position.

[0041] By providing the second solenoid valve 7 and the temporary storage container 8 that does not require electrical drive, when the food processor is powered off, the middle spring 73 pushes the second valve core 72 to reset to the middle position, so that the water port 811 of the container body 81 is connected to the water pumping pipeline 31. At the same time, the reset tension spring 83 pulls the water pumping piston 82 to pump the coolant in the stirring hook 1 and the connecting shaft 2 into the container body 81, thereby preventing the coolant from leaking to the outside when the stirring hook 1 is disassembled after the food processor is powered off, avoiding the waste of coolant and causing pollution to the equipment and the surrounding environment, and improving the reliability of the equipment. When the food processor is powered on again, the electromagnetic coil drives the second valve core 72 to move to the right position, and the inlet of the water pump 3 is connected to the water port 811 of the container body 81. The water pump 3 can pump the coolant in the container body 81 to the temperature control container 42, and suck up the water pumping piston 82 to stretch the reset tension spring 83, thereby ensuring that the temporary storage container 8 can work normally next time.

[0042] When there is a temperature difference between the connecting shaft 2, the stirring hook 1 and various pipelines and the air, a layer of water film will condense on their surface. Although the condensed water film in a short period of time will not have much impact on the dough or equipment, when the food processor works continuously for a long time and the circulating water cooling device works for a long time, the temperature difference between the above-mentioned components and the air is large. When the air humidity is high, more condensed water is likely to be generated on their surface, especially in the humid rainy season in the south, which makes the equipment prone to rust and corrosion. The flour particles flying up during dough kneading will mix with the condensed water, making it more difficult to clean the equipment, and the mixed particles will fall into the dough mixing basin 14 and contaminate the dough. In the chef machine of this embodiment, after the stirring hook 1 has finished kneading the dough, the stirring hook 1 stops, and the user needs to take away the dough that has been kneaded. If it is necessary to continue kneading the dough, it is necessary to re-discharge the dough. When the kneading is completed once and the stirring hook stops, the semiconductor temperature control sheet 41 can also pass a reverse current to heat the side that is in contact with the temperature control container 42, so that the temperature of the coolant flowing through the temperature control container 42 increases, so that the temperature of the circulating coolant increases, and the temperature difference between the inside and outside of the position where the condensed water mist is formed is changed, thereby eliminating the condensed water mist (at this time, there is only a very thin layer of water mist), which is similar to the technical principle of defogger for automobile windshields. Such operation during the process of the user taking and discharging the materials helps to reduce the generation of condensed water, accelerate the evaporation of condensed water, and avoid continuous long-term and multiple kneading of the dough, which causes the condensed water mist to continue to increase and condense into condensed water droplets, thereby reducing the risk of rust and corrosion of the equipment due to the adhesion of condensed water. At the same time, the chef machine can work stably under different environmental conditions. Whether in the humid southern region or in the seasonal transition period with a large temperature difference, it can operate normally, broadening the scope of application of the equipment.

[0043] After kneading the dough, if the stirring hook 1 is directly removed for cleaning, the coolant in the circulating water cooling device will stop circulating. When it is necessary to reduce condensed water, the stirring hook 1 must be inserted back into the connecting shaft 2 so that the coolant can continue to circulate. It is impossible to reduce condensed water while cleaning the stirring hook 1. Figure 5 , Fig.11 and Fig.12 The chef machine of this embodiment also includes a blocking component, a reflux cavity and a sliding groove 25 are provided at the end of the connecting shaft 2, and the blocking component includes a blocking valve core 9 and a push spring 91. The blocking valve core 9 is slidably connected to the sliding groove 25 and extends into the reflux cavity. The blocking valve core 9 divides the reflux cavity into a first cavity 23 and a second cavity 24. The inlet and outlet of the first cavity 23 are respectively connected to the first channel 21 and the cooling cavity 11, and the inlet and outlet of the second cavity 24 are respectively connected to the second channel 22 and the return water pipeline 12. The blocking valve core 9 is provided with a reflux hole 92 connecting the first cavity 23 and the second cavity 24. One end of the push spring 91 is connected to the reflux valve core, and the other end is connected to the top of the reflux cavity.

[0044] The sliding groove 25 is provided with an upper limit position and a lower limit position, and the barrier valve core 9 can slide between the upper limit position and the lower limit position. Figure 5 As shown, when the stirring hook 1 is connected to the connecting shaft 2, the top of the stirring hook 1 is inserted into the reflux cavity and pushes the blocking valve core 9 to retract to the upper limit position. At this time, the reflux hole 92 is blocked by the groove wall of the sliding groove 25, and the outlets of the first cavity 23 and the second cavity 24 are both opened. The top of the stirring hook 1 is provided with two independent openings, and the two independent openings correspond to the outlets of the first cavity 23 and the second cavity 24 respectively. The coolant flows into the cooling cavity 11 through the first channel 21 and the first cavity 23, and flows to the second channel 22 through the return pipe 12 and the second cavity 24. When the stirring hook 1 is disassembled and separated from the connecting shaft 2, the push spring 91 pushes the reflux valve core to extend to the lower limit position. At this time, the reflux hole 92 is opened, the first cavity 23 and the second cavity 24 are connected, and the outlets of the first cavity 23 and the second cavity 24 are both blocked. The coolant flows directly from the first cavity 23 to the second cavity 24 through the first channel 21, and flows back to the second channel 22. By setting up a barrier component, the circulation of the coolant will not be interrupted after the stirring hook 1 is removed, and leakage of the coolant is avoided. Even during the process of disassembling, cleaning or replacing the stirring hook 1, the circulating water cooling device can still maintain normal operation to continuously heat the coolant and remove condensed water.

[0045] During the process of kneading dough in the food processor, if the coolant leaks from the connection between the connecting shaft 2 and the stirring hook 1, it may flow into other parts inside the food processor, which may not only cause corrosion to these parts, affecting their normal operation and service life, but also cause electrical failures, posing a safety hazard. At the same time, once the coolant drips into the flour or the dough being stirred, it will directly contaminate the ingredients. Figure 6 and Figure 7 As shown, a tray 13 is provided at the upper end of the stirring hook 1 to receive the coolant that may leak from the connection between the connecting shaft 2 and the stirring hook 1. After the tray 13 is provided, the coolant that may leak can be effectively received to ensure that ingredients such as flour and dough are not contaminated by the leaked coolant.

[0046] The specific working process of the chef machine of this embodiment is as follows: When the food processor is working, the driving motor 10 drives the coupling block 51 to rotate, driving the planetary gear 53 and the connecting shaft 2 to revolve around the output shaft 101 of the driving motor 10, and the planetary gear 53 rotates to drive the stirring hook 1 to rotate. At the same time, the water pump 3 drives the coolant to flow to the cooling chamber 11 of the stirring hook 1 through the water supply pipeline 32, the first intermediate channel 513, the first channel 21, and the first cavity 23, and then flows back to the temperature control container 42 through the return water pipeline 12, the second cavity 24, the second channel 22, the second intermediate channel 514 and the pumping pipeline 31. The semiconductor temperature control sheet 41 cools the coolant flowing through the temperature control container 42, and the heat sink 43 dissipates the heat into the air; When the stirring hook 1 is kneading dough, the first electromagnetic coil of the first electromagnetic valve 6 is energized, and the water supply pipeline 32 is opened to circulate the coolant. When the stirring hook 1 needs to be disassembled, the first electromagnetic coil is de-energized, the water supply pipeline 32 is blocked, and the water pump 3 pumps the coolant back to the temperature control container 42; When the food processor is powered off, the middle position spring 73 of the second solenoid valve 7 pushes the second valve core 72 to return to the middle position, and the return tension spring 83 of the temporary storage container 8 pulls the pumping piston 82 to pump the coolant into the container body 81 to prevent the coolant from leaking; when the food processor is powered on again, the second valve core 72 moves to the right position, and the water pump 3 pumps the coolant in the container body 81 back to the temperature control container 42; When it is necessary to remove the condensed water, the semiconductor temperature control piece 41 passes reverse current to generate heat; after the stirring hook 1 is disassembled, the blocking valve core 9 blocks the outlets of the first cavity 23 and the second cavity 24, and connects the first cavity 23 and the second cavity 24, so that the coolant continues to circulate and the operation of heating the coolant to remove the condensed water continues, and the tray 13 at the upper end of the stirring hook 1 can receive the coolant that may leak at the connection between the connecting shaft 2 and the stirring hook 1 to avoid contaminating the food.

[0047] 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 dough mixer, comprising a driving motor, a dough mixing bowl and a stirring hook, characterized in that: It also includes a connecting shaft and a circulating water cooling device, the connecting shaft is drivingly connected to the output shaft of the driving motor, the end of the connecting shaft is detachably connected to the stirring hook, the stirring hook is provided with a cooling chamber and a return water pipeline interconnected with each other, the connecting shaft is respectively provided with a first channel connected to the cooling chamber and a second channel connected to the return water pipeline, and the circulating water cooling device includes: Coolant; a water pump having an inlet and an outlet; The circulation pipeline includes a water pumping pipeline and a water supply pipeline, wherein the water pumping pipeline is connected to the second channel of the connecting shaft, and the water supply pipeline is connected to the first channel of the connecting shaft; The temperature control component is used to adjust the temperature of the coolant, including a semiconductor temperature control sheet, a temperature control container, a heat sink and a heat dissipation fan. One side of the semiconductor temperature control sheet is attached to the temperature control container, and the other side is attached to the heat sink. The other side of the heat sink is attached to the heat dissipation fan. The temperature control container is provided with a water inlet. The inlet of the water pump is connected to the water pumping pipeline. The outlet of the water pump is connected to the inlet of the temperature control container. The outlet of the temperature control container is connected to the water supply pipeline. When the stirring hook is kneading the dough, the water pump drives the coolant to flow from the temperature control container to the cooling chamber of the stirring hook to absorb the heat of the stirring hook, and flows back to the temperature control container from the return pipe. The semiconductor temperature control piece passes a forward current to cool the side that is in contact with the temperature control container, so as to absorb the heat of the coolant flowing through the temperature control container to reduce its temperature, and transfer the heat to the heat sink, and the cooling fan blows the heat of the heat sink to the outside.

2. A chef machine for kneading dough as claimed in claim 1, characterized in that: Also included is a transmission mechanism, which includes: A coupling block, which includes a boss end and a platform end, both of which are provided with through holes, the output shaft of the driving motor is fixedly connected to the through hole of the boss end, the connecting shaft passes through the through hole of the platform end and can rotate, the coupling block is also provided with a first intermediate channel, a second intermediate channel and two rotating joints, the two ends of the first intermediate channel are respectively connected to the first channel and the water supply pipeline through the two rotating joints, and the two ends of the second intermediate channel are respectively connected to the second channel and the water pumping pipeline through the two rotating joints; A planetary gear set, comprising a ring gear and planetary wheels, the ring gear meshes with the planetary wheels, and a connecting shaft is fixedly connected to the planetary wheels; When the stirring hook is kneading the dough, the driving motor drives the coupling block to rotate, so as to drive the planetary gear and the connecting shaft to revolve around the output shaft of the driving motor, and the planetary gear rotates to drive the stirring hook to rotate, and the water pump drives the coolant to flow to the cooling chamber through the water supply pipeline, the first intermediate channel, and the first channel, and flows back to the temperature control container through the return pipeline, the second channel, the second intermediate channel and the pumping pipeline.

3. A chef machine for kneading dough as claimed in claim 1, characterized in that: The invention also includes a leakage protection device, which includes a first solenoid valve for controlling the connection and disconnection of the water supply pipeline, and the first solenoid valve includes: a first electromagnetic coil; A first valve body, wherein an upper chamber and a lower chamber are provided inside the first valve body, the upper chamber is provided with a first vent hole communicating with the outside, the lower chamber is provided with an inlet and an outlet, and the upstream part and the downstream part of the water supply pipeline are respectively communicated with the inlet and the outlet of the lower chamber; A vent piston, which is slidably connected to the first valve body so as to block the inlet and outlet of the lower chamber, the vent piston is provided with a one-way airway, a one-way vent valve is provided in the one-way airway, and the communication direction of the one-way airway is from the upper chamber to the outlet of the lower chamber; A return spring, one end of which is connected to the top of the upper chamber, and the other end of which is connected to the ventilation piston; When the stirring hook is kneading the dough, the first electromagnetic coil is energized to drive the ventilation piston to move to the upper chamber to open the inlet and outlet of the lower chamber so that the upstream and downstream parts of the water supply pipeline are connected. When the stirring hook needs to be disassembled, the first electromagnetic coil is de-energized, and the return spring pushes the ventilation piston to move to the top of the lower chamber to block the inlet and outlet of the lower chamber, so that the upstream and downstream parts of the water supply pipeline are disconnected, and the coolant in the temperature control container cannot flow out. At this time, the water pump continues to work, and the external air flow enters from the first vent hole and pushes open the one-way ventilation valve. The one-way airway connects the outlets of the upper chamber and the lower chamber, so that the coolant in the downstream part of the water supply pipeline, the first channel, the second channel and the stirring hook is drawn back into the temperature control container.

4. A chef machine for kneading dough as claimed in claim 3, characterized in that: The leakage protection device also includes a temporary storage container and a second solenoid valve. The staging containers include: The container body has a water inlet at the top and a second air vent at the bottom that communicates with the outside; A water pumping piston, which is slidably connected to the container body; A reset tension spring, one end of which is connected to the water pumping piston, and the other end of which is connected to the bottom of the container body; The second solenoid valve comprises: A second valve body is provided with an inlet P, an outlet A and an outlet B, wherein the inlet P is communicated with the inlet of the water pump, the outlet A is communicated with the water through-port of the container body, and the outlet B is communicated with the water pumping pipeline; The second valve core is slidably connected to the second valve body and is provided with three working positions, namely, a left position, a middle position and a right position. The second valve core is provided with three different connecting channels corresponding to the three working positions of the second valve core, wherein when the second valve core is in the left position, the inlet of the water pump is connected to the water pumping pipeline, when the second valve core is in the right position, the inlet of the water pump is connected to the water outlet of the container body, and when the second valve core is in the middle position, the water outlet of the container body is connected to the water pumping pipeline; Two second electromagnetic coils are provided, respectively used to drive the second valve core to the left position and the right position; Two neutral springs are provided, both of which are connected to the second valve core and are respectively located at two ends of the second valve body, so as to push the second valve core to return to the neutral position; When the stirring hook is kneading dough, the second electromagnetic coil drives the second valve core to move to the left position, the inlet of the water pump is connected to the water pumping pipeline, and the circulating water cooling device works normally; When the food processor is powered off, the second electromagnetic coil releases the second valve core, the middle spring pushes the second valve core to return to the middle position, the water port of the container body is connected to the water pumping pipeline, and the reset tension spring pulls the water pumping piston to pump the stirring hook, the connecting shaft and the coolant in the circulation pipeline into the container body; When the food processor is powered on again, the second electromagnetic coil drives the second valve core to move to the right position, the inlet of the water pump is connected to the water port of the container body, the water pump pumps the coolant in the container body to the temperature control container, and draws up the pumping piston to stretch the reset spring.

5. A chef machine for kneading dough as claimed in claim 1, characterized in that: After the stirring hook and the dough are kneaded, the semiconductor temperature control sheet can also pass a reverse current to heat the side that is in contact with the temperature control container, so as to increase the temperature of the coolant flowing through the temperature control container.

6. A chef machine for kneading dough as claimed in claim 5, characterized in that: It also includes a blocking component, a reflux cavity and a sliding groove are provided at the end of the connecting shaft, and the blocking component includes: A barrier valve core is slidably connected with the sliding groove and extends into the reflux cavity, and divides the reflux cavity into a first cavity and a second cavity, the inlet and outlet of the first cavity are respectively connected with the first channel and the cooling cavity, the inlet and outlet of the second cavity are respectively connected with the second channel and the return water pipeline, and a reflux hole connecting the first cavity and the second cavity is provided on the barrier valve core; A push spring, one end of which is connected to the reflux valve core, and the other end of which is connected to the top of the reflux cavity; The sliding groove is provided with an upper limit position and a lower limit position, and the blocking valve core can slide between the upper limit position and the lower limit position; When the stirring hook is connected to the connecting shaft, the top of the stirring hook is inserted into the reflux cavity and pushes the blocking valve core to retract to the upper limit position. At this time, the reflux hole is blocked, and the outlets of the first cavity and the second cavity are both opened. The coolant flows into the cooling cavity through the first channel and the first cavity, and flows to the second channel through the return water pipeline and the second cavity; When the stirring hook is disassembled and separated from the connecting shaft, the push spring pushes the reflux valve core to extend to the lower limit position. At this time, the reflux hole is opened, the first cavity and the second cavity are connected, and the outlets of the first cavity and the second cavity are both blocked. The coolant flows directly from the first cavity to the second cavity through the first channel, and flows back to the second channel.

7. A chef machine for kneading dough as claimed in claim 1, characterized in that: A tray is provided at the upper end of the stirring hook to receive the coolant that may leak from the connection between the connecting shaft and the stirring hook.

Images