A kitchen machine for making pasta

Abstract

A kind of kitchen machine for and face, it is related to kitchen machine technical field, including drive motor, dough basin, stirring hook, connecting shaft and circulating water cooling device.Connecting shaft is drivingly connected with the output shaft of drive motor, and is detachably connected with stirring hook.Cooling cavity and backwater pipeline are arranged in stirring hook, and connecting shaft is provided with first channel and second channel.Circulating water cooling device includes coolant, water pump, circulating pipeline and temperature control component.Working, water pump drives coolant to circulate between temperature control container and stirring hook, absorbs the heat of stirring hook, and semiconductor temperature control piece refrigeration makes coolant temperature drop, and then is cooled by radiating fin and radiating fan.The kitchen machine provided by the technical scheme can effectively reduce the temperature of stirring hook, and the cooling effect of the friction heat generation site of stirring hook is better.

Description

Technical Field

[0001] This invention relates to the field of food processor technology, and more specifically to a food processor for kneading dough. Background Technology

[0002] A stand mixer is a multi-functional kitchen appliance, typically driven by an electric motor, capable of performing many tasks traditionally done manually in a kitchen, such as mixing, blending, chopping, whipping egg whites, and kneading dough. When a stand mixer kneads dough, its mixing hook contacts and mixes the dough, creating friction between the hook and the dough, and between the dough and the mixing bowl. This friction converts mechanical energy into heat, gradually raising the dough's temperature. To some extent, a slight increase in temperature can aid fermentation. However, as kneading time increases, the total number of friction cycles rises, and the accumulated heat can lead to excessively high temperatures. Excessive heat can kill the yeast, preventing proper fermentation for doughs that require fermentation. Furthermore, excessively high temperatures can hinder gluten formation, thus affecting the dough's quality. To mitigate the problem of dough overheating, traditional techniques typically involve cooling the mixing bowl, but there's no cooling mechanism between the mixing hook and the dough, resulting in less than ideal cooling. Summary of the Invention

[0003] In view of this, the present invention provides a stand mixer for kneading dough, which can cool the mixing hook during kneading, and has a better cooling effect on the heat-generating parts of the mixing hook and the dough.

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

[0005] A stand mixer for kneading dough includes a drive motor, a kneading bowl, a mixing hook, a connecting shaft, and a circulating water cooling device. The connecting shaft is driven by the output shaft of the drive motor, and its end is detachably connected to the mixing hook. The mixing hook has an interconnected cooling chamber and a return water pipe. The connecting shaft has a first channel connecting to the cooling chamber and a second channel connecting to the return water pipe. The circulating water cooling device includes:

[0006] Coolant;

[0007] A water pump, which has an inlet and an outlet;

[0008] The circulation pipeline includes a pumping pipeline and a supply pipeline. The pumping pipeline is connected to the second channel of the connecting shaft, and the supply pipeline is connected to the first channel of the connecting shaft.

[0009] A temperature control component for regulating the temperature of coolant includes a semiconductor temperature control chip, a temperature control container, a heat sink, and a cooling fan. One side of the semiconductor temperature control chip 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 cooling 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, and the outlet of the temperature control container is connected to the water supply pipeline.

[0010] When the mixing hook is kneading dough, the water pump drives coolant from the temperature control container to the cooling chamber of the mixing hook to absorb the heat generated by the mixing hook. The coolant then flows back to the temperature control container through the return pipe. A forward current is applied to the semiconductor temperature control plate, cooling the side of the plate that is in contact with the temperature control container. This absorbs the heat from the coolant flowing through the container, lowering its temperature and transferring it to the heat sink. A cooling fan then dissipates the heat from the heat sink to the outside. During kneading, the coolant in the cooling chamber absorbs the heat generated by the mixing hook, and the circulating coolant continuously carries away the absorbed heat. The combined action of the temperature control container, the semiconductor temperature control plate, and the heat sink effectively dissipates the heat, significantly reducing the temperature of the mixing hook and providing better cooling for the friction-generated parts of the mixing hook.

[0011] This also includes a transmission mechanism, which comprises:

[0012] The coupling block includes a boss end and a platform end, both of which are provided with through holes. The output shaft of the drive motor is fixedly connected to the through hole of the boss end, and 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 rotary joints. The two ends of the first intermediate channel are respectively connected to the first channel and the water supply pipeline through the two rotary joints, and the two ends of the second intermediate channel are respectively connected to the second channel and the pumping pipeline through the two rotary joints.

[0013] A planetary gear set includes a ring gear and planetary gears. The ring gear meshes with the planetary gears, and the connecting shaft is fixedly connected to the planetary gears.

[0014] When the mixing hook is kneading dough, the drive motor drives the coupling block to rotate, which in turn drives the planetary gears and connecting shaft to revolve around the output shaft of the drive motor. The planetary gears rotate on their own axis, driving the mixing hook to rotate. The water pump drives the coolant to flow through the water supply pipe, the first intermediate channel, and the first channel to the cooling chamber, and then through the return pipe, the second channel, the second intermediate channel, and the pumping pipe back to the temperature control container. The movement trajectory of the mixing hook is realized through the planetary gear transmission structure, simulating the action of manual kneading, so that the flour and water and other ingredients are fully mixed. Compared with the traditional single rotation method of mixing, it can improve the uniformity and efficiency of kneading, and produce better quality dough. If the connection is made through external pipes, it will occupy a lot of space inside the stand mixer and affect the layout of other structures. By setting a rotary joint and setting a channel inside the transmission component, in conjunction with the water pump, the coolant can be circulated between the temperature control container and the mixing hook. The structure is compact, does not occupy other space, and does not make it difficult to connect the various pipes due to rotation.

[0015] It also includes a leakage protection device, which includes a first solenoid valve for controlling the connection and disconnection of the water supply pipeline. The first solenoid valve includes:

[0016] First electromagnetic coil;

[0017] The first valve body has an upper chamber and a lower chamber inside. The upper chamber has a first vent hole that connects to the outside. The lower chamber has an inlet and an outlet. The upstream and downstream parts of the water supply pipeline are respectively connected to the inlet and outlet of the lower chamber.

[0018] A venting piston is slidably connected to the first valve body to block the inlet and outlet of the lower chamber. The venting piston is provided with a one-way air passage, and a one-way venting valve is provided in the one-way air passage. The communication direction of the one-way air passage is from the upper chamber to the outlet of the lower chamber.

[0019] A return spring, one end of which is connected to the top of the upper cavity, and the other end of which is connected to the venting piston;

[0020] When the stirring hook is kneading dough, the first electromagnetic coil is energized, driving the vent piston to move to the upper chamber, opening the inlet and outlet of the lower chamber to connect the upstream and downstream parts of the water supply pipeline. When the stirring hook needs to be disassembled, the first electromagnetic coil is de-energized, and the reset spring pushes the vent piston to the top of the lower chamber to block the inlet and outlet of the lower chamber, disconnecting the upstream and downstream parts of the water supply pipeline. The coolant in the temperature control container cannot flow out. At this time, the water pump continues to work, and the external airflow enters from the first vent and pushes open the one-way vent valve. The one-way air passage connects the outlet 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.

[0021] By installing a first solenoid valve, when the stirring hook needs to be disassembled, the valve disconnects the upstream and downstream sections of the water supply pipeline. Simultaneously, the water pump continues to operate, drawing coolant from other locations back into the temperature control container. This prevents coolant leakage during disassembly, ensuring a clean environment around the equipment and avoiding coolant waste. The installation of a first vent, a one-way air passage, and a one-way vent valve connects the pipeline system to the outside air, ensuring that coolant in the downstream section of the water supply pipeline, the first channel, the second channel, and the stirring hook can be smoothly drawn back into the temperature control container.

[0022] The leakage protection device also includes a temporary storage container and a second solenoid valve.

[0023] Temporary storage containers include:

[0024] The container body has a water inlet at the top and a second vent at the bottom that communicates with the outside.

[0025] The pumping piston is slidably connected to the container body;

[0026] The return spring has one end connected to the pumping piston and the other end connected to the bottom of the container body.

[0027] The second solenoid valve includes:

[0028] The second valve body has an inlet P, an outlet A and an outlet B, wherein the inlet P is connected to the inlet of the water pump, the outlet A is connected to the water inlet of the container body, and the outlet B is connected to the pumping pipeline.

[0029] The second valve core is slidably connected to the second valve body and has three working positions: left, middle and right. The second valve core has three different connection channels to correspond to the three working positions of the second valve core respectively. 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. When the second valve core is in the middle position, the water outlet of the container body is connected to the water pumping pipeline.

[0030] The second electromagnetic coil has two coils, which are used to drive the second valve core to the left and right positions respectively;

[0031] There are two center springs, both of which are connected to the second valve core and are located at both ends of the second valve body, so as to push the second valve core to return to the center position;

[0032] When the stirring hook is kneading the 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.

[0033] When the food processor is powered off, the second electromagnetic coil releases the second valve core, and the center spring pushes the second valve core back to the center position. The water inlet of the container body is connected to the water pumping pipe, and the reset spring pulls the water pumping piston to pump the coolant in the stirring hook, connecting shaft and circulation pipe into the container body.

[0034] 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 inlet of the container body. The water pump draws the coolant in the container body to the temperature control container and pulls up the pumping piston to stretch the reset spring.

[0035] If the mixing hook is disassembled while 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 mixing hook and connecting shaft will still leak, resulting in low equipment reliability. By setting a second solenoid valve and a power-free storage container, when the food processor is powered off, the center spring pushes the second valve core to return to the center position, connecting the water inlet of the container body to the water pump line. At the same time, the return spring pulls the pumping piston, drawing the coolant from the mixing hook and connecting shaft into the container body. This prevents coolant leakage to the outside when the mixing hook is disassembled after the food processor is powered off, avoiding coolant waste and pollution to the equipment and the surrounding environment, thus improving equipment reliability. When the food processor is powered back on, the solenoid coil drives the second valve core to the right position, connecting the water pump inlet to the water inlet of the container body. The water pump can draw the coolant from the container body to the temperature-controlled container and lift the pumping piston to stretch the return spring, thus ensuring that the storage container can work normally the next time.

[0036] After the mixing hook has finished kneading, the semiconductor temperature control plate can also be powered by a reverse current, heating the side of it that is in contact with the temperature control container to raise the temperature of the coolant flowing through it. When the connecting shaft, mixing hook, and various pipes experience a temperature difference with the air, a layer of water film will condense on their surfaces. Although this condensed water film will not have a significant impact on kneading or the equipment in the short term, when the circulating water cooling system operates for extended periods, the temperature difference between these components and the air becomes larger. When the air humidity is high, these surfaces are prone to condensation, especially during the humid rainy season in southern regions. This can lead to rust and corrosion of the equipment. Furthermore, flour particles flying up during kneading mix with the condensed water, making cleaning more difficult, and the mixed particles falling into the kneading bowl can contaminate the dough. By powering the semiconductor temperature control plate with a reverse current after kneading, the temperature of the coolant flowing through the temperature control container is increased, which helps reduce condensation and accelerates its evaporation, thus reducing the risk of rust and corrosion caused by condensation. Simultaneously, this allows the food processor to operate stably under different environmental conditions. It can operate normally in humid southern regions or during seasonal transitions with large temperature differences, thus broadening the applicability of the equipment.

[0037] It also includes a barrier component, with a reflux cavity and a sliding groove at the end of the connecting shaft. The barrier component includes:

[0038] The barrier valve core is slidably connected to the sliding groove and extends into the return cavity, dividing the return cavity into a first cavity and a second cavity. The inlet and outlet of the first cavity are respectively connected to the first channel and the cooling cavity, and the inlet and outlet of the second cavity are respectively connected to the second channel and the return water pipe. The barrier valve core is provided with a return hole connecting the first cavity and the second cavity.

[0039] The push spring has one end connected to the return valve core and the other end connected to the top of the return cavity;

[0040] The sliding groove has an upper limit position and a lower limit position, which prevents the valve core from sliding between the upper limit position and the lower limit position;

[0041] When the stirring hook is connected to the connecting shaft, the top of the stirring hook is inserted into the reflux chamber and pushes the blocking valve core back to the upper limit position. At this time, the reflux hole is blocked, and the outlets of the first chamber and the second chamber are opened. The coolant flows into the cooling chamber through the first channel and the first chamber, and then flows to the second channel through the return water pipe and the second chamber.

[0042] When the stirring hook is disassembled from the connecting shaft, the push spring pushes the return valve core to extend to the lower limit position. At this time, the return hole is opened, the first chamber and the second chamber are connected, and the outlets of the first chamber and the second chamber are blocked. The coolant flows directly from the first chamber to the second chamber through the first channel and flows back to the second channel.

[0043] After kneading the dough, directly removing the stirring hook for cleaning will cause the coolant circulation in the circulating water cooling system to stop. When it's necessary to reduce condensation, the stirring hook must be reinserted into the connecting shaft for the coolant to resume circulation. This makes it impossible to reduce condensation while cleaning the stirring hook, resulting in low efficiency. By incorporating a barrier component, coolant circulation is not interrupted after the stirring hook is removed, and coolant leakage is prevented. Even during disassembly, cleaning, or replacement of the stirring hook, the circulating water cooling system continues to operate normally, continuously heating the coolant to remove condensation.

[0044] The mixing hook is equipped with a tray at its upper end to catch any coolant leakage that may occur at the connection between the connecting shaft and the mixing hook. During the kneading process in the stand mixer, if coolant leaks from this connection, it may flow into other internal components. This could not only corrode these components, affecting their normal operation and lifespan, but also potentially cause electrical malfunctions, posing a safety hazard. Furthermore, if coolant drips into the flour or the dough being kneaded, it will directly contaminate the food. The tray effectively catches any leaked coolant, ensuring that the flour, dough, and other ingredients are not contaminated. Attached Figure Description

[0045] Figure 1 This is a three-dimensional structural diagram of the food processor of the present invention.

[0046] Figure 2 This is a three-dimensional structural diagram of the food processor and the mixing bowl of the present invention.

[0047] Figure 3 The food processor of the present invention is in Figure 2 A sectional view in the specified state.

[0048] Figure 4 for Figure 3 Enlarged diagram of point A in the middle.

[0049] Figure 5 for Figure 3 Enlarged diagram of point B in the middle.

[0050] Figure 6 This is a three-dimensional structural diagram of the hidden part of the food processor of the present invention.

[0051] Figure 7 for Figure 6 Exploded view of the structure.

[0052] Figure 8 This is a cross-sectional view of the second solenoid valve and part of the piping.

[0053] Figure 9 Cross-sectional view of the temporary storage container

[0054] Figure 10 An exploded view of the planetary gears, connecting shafts, rotary joints, and coupling blocks.

[0055] Figure 11 This is a three-dimensional sectional view of the planetary gears, connecting shaft, rotary joint, coupling block, and circulation pipeline.

[0056] Figure 12 for Figure 11 Enlarged diagram of point C in the middle.

[0057] Figure 13 This is a three-dimensional sectional view of the second solenoid valve.

[0058] The reference numerals in the figures include:

[0059] 1. Stirring hook; 11. Cooling chamber; 12. Water return pipe; 13. Tray;

[0060] Connecting shaft 2, first channel 21, second channel 22, first cavity 23, second cavity 24, sliding groove 25, first groove 26;

[0061] Water pump 3, water pumping pipe 31, water supply pipe 32,

[0062] Temperature control component 4, semiconductor temperature control chip 41, temperature control container 42, water inlet 421, heat sink 43, cooling fan 44;

[0063] 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, gear ring 52, planetary gear 53;

[0064] First solenoid valve 6, first valve body 61, first vent 611, vent piston 62, one-way air passage 621, one-way vent valve 622, return spring 63;

[0065] Second solenoid valve 7, second valve body 71, second valve core 72, neutral spring 73;

[0066] Temporary storage container 8, container body 81, water inlet 811, second vent 812, water pumping piston 82, reset spring 83;

[0067] 9 isolating valve core, 91 is push spring, and 92 is return hole;

[0068] Drive motor 10, output shaft 101, and basin 14. Detailed Implementation

[0069] The invention will be described in detail below with reference to specific embodiments.

[0070] Combination Figures 1-6 The food processor in this embodiment includes a drive motor 10, a transmission mechanism 5, a mixing bowl 14, a stirring hook 1, a connecting shaft 2, and a circulating water cooling device. Figures 6-7 The connecting shaft 2 is connected to the output shaft 101 of the drive motor 10 via a transmission mechanism 5. 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 locking post and a locking groove. Figure 5 and Figure 7 The stirring hook 1 is hollow and has a cooling chamber 11. The cooling chamber 11 is equipped with a return water pipe 12. The inlet of the return water pipe 12 extends to the bottom of the cooling chamber 11 and communicates with the cooling chamber 11. The connecting shaft 2 is equipped with a first channel 21 that communicates with the cooling chamber 11 and a second channel 22 that communicates with the return water pipe 12. Specifically, the first channel 21 communicates with the opening at the top of the cooling chamber 11, and the second channel 22 communicates with the outlet of the return water pipe 12.

[0071] Combination Figures 6-7The circulating water cooling device includes coolant, a water pump 3, circulating pipelines, and a temperature control component 4. The water pump 3 has an inlet and an outlet. The circulating pipeline includes a pumping pipeline 31 and a supply pipeline 32. The pumping pipeline 31 is connected to the second channel 22 of the connecting shaft 2, and the 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 chip 41, a temperature control container 42, a heat sink 43, and a cooling fan 44. One side of the semiconductor temperature control chip 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 has a water inlet 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 supply pipeline 32.

[0072] Combination Figures 6-7 and Figure 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 drive motor 10 is inserted into the through hole of the boss end 511 and fixedly connected to it. The connecting shaft 2 passes through the through hole of the platform end 512 and is rotatably connected to it. Figures 10-11 The coupling block 51 also includes a first intermediate channel 513, a second intermediate channel 514, and two rotary joints 515. The two rotary joints 515 are respectively fitted onto the connecting shaft 2 and the boss end 511. The connecting shaft 2 has two annular grooves 26. The first channel 21 and the second channel 22 respectively connect the two first grooves 26. After one rotary joint 515 is fitted onto the connecting shaft 2, it closes the two first grooves 26. Both first grooves 26 have openings (located on the rotary joints 515) to allow the two first grooves to... The groove 26 connects 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, which are connected to the first intermediate channel 513 and the second intermediate channel 514 respectively. After another rotary joint 515 is sleeved on the boss end 511, it closes the two second grooves 516. Both second grooves 516 are provided with openings (located on the rotary joint 515) so that the two second grooves 516 can connect to the pumping pipe 31 and the supply pipe 32 respectively. In this way, the circulation pipe can flow through the rotating coupling block 51 and the connecting shaft 2, solving the problem of not being able to lay the pipes.

[0073] like Figure 7 As shown, the planetary gear set includes a gear ring 52 and planetary gears 53. The gear ring 52 is fixedly installed, the planetary gears 53 mesh with the gear ring 52, and the connecting shaft 2 is fixedly connected to the planetary gears 53.

[0074] When the stirring hook 1 is kneading dough, the drive motor 10 drives the coupling block 51 to rotate, which in turn drives the planetary gear 53 and the connecting shaft 2 to revolve around the output shaft 101 of the drive motor 10. The planetary gear 53 rotates on its own axis to drive the stirring hook 1 to rotate. The water pump 3 drives the coolant to flow through the water supply pipe 32, the first intermediate channel 513, and the first channel 21 to the cooling chamber 11, and then through the return water pipe 12, the second channel 22, the second intermediate channel 514, and the pumping pipe 31 back to the temperature control container 42. The coolant circulates between the temperature control container 42 and the stirring hook 1. The semiconductor temperature control chip 41 cools the side of its contact with the temperature control container 42 through a positive current, thereby reducing the temperature of the coolant flowing through the temperature control container 42.

[0075] When the mixing hook 1 is kneading dough, the coolant in the cooling chamber 11 absorbs the heat generated by the mixing hook 1. During its circulation, the coolant continuously carries away the absorbed heat and dissipates it into the air through the cooperation of the temperature control container 42, the semiconductor temperature control plate 41, the heat sink 43, and the cooling fan 44. This effectively reduces the temperature of the mixing hook 1, providing better cooling for the friction-generated parts of the mixing hook 1. The planetary gear transmission structure enables the movement trajectory of the mixing hook 1, simulating the action of manual dough kneading, ensuring thorough mixing of flour and water. Compared to traditional single-rotation mixing, this improves the uniformity and efficiency of dough kneading, resulting in higher-quality dough. Furthermore, external piping would occupy a significant amount of space inside the food processor, affecting the arrangement of other components. By using a rotary joint 515 and a channel within the coupling block 51, along with the water pump 3, the coolant circulates between the temperature control container 42 and the mixing hook 1. This results in a compact structure that requires no additional space and avoids difficulties in connecting various pipes due to rotation.

[0076] After kneading the dough, if the mixing hook 1 is removed directly, the coolant will leak from the channel of the connecting shaft 2, causing coolant waste, contaminating the dough, and potentially damaging the electrical components. Combined with... Figures 3-4 The stand mixer for kneading dough in this embodiment 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 4The first solenoid valve 6 includes a first solenoid coil, a first valve body 61, a venting piston 62, and a return spring 63. The first valve body 61 has an upper chamber and a lower chamber. Specifically, the venting piston 62 divides the internal cavity of the first valve body 61 into an upper chamber and a lower chamber, and their spaces are expanded or compressed as the venting piston 62 moves. The upper chamber has a first vent hole 611 connecting to the outside, and the lower chamber has an inlet and an outlet. The upstream and downstream portions of the water supply pipe 32 are respectively connected to the inlet and outlet of the lower chamber. The venting piston 62 is slidably connected within the first valve body 61 to block the inlet and outlet of the lower chamber. When the venting piston 62 completely compresses the lower chamber, the inlet and outlet of the lower chamber are effectively blocked. The venting piston 62 has a one-way air passage 621, within which a one-way vent valve 622 is installed. The one-way air passage 621 connects 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 cavity, and the other end is connected to the venting piston 62.

[0077] When the stirring hook 1 is kneading dough, the first electromagnetic coil is energized, driving the venting piston 62 to move to the upper chamber, thereby opening the inlet and outlet of the lower chamber and connecting the upstream and downstream parts of the water supply pipe 32. When the stirring hook 1 needs to be disassembled, the first electromagnetic coil is de-energized, and the return spring 63 pushes the venting piston 62 to the top of the lower chamber, thereby blocking the inlet and outlet of the lower chamber and disconnecting the upstream and downstream parts of the water supply pipe 32. The coolant in the temperature control container 42 cannot flow out. At this time, the water pump 3 continues to work, and the external airflow enters from the first vent 611 and pushes open the one-way vent valve 622, connecting the water supply pipe 32 with the external atmosphere. 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 successfully drawn back into the temperature control container 42.

[0078] 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, preventing the coolant in the temperature control container 42 from flowing out. At the same time, the water pump 3 continues to work, drawing the coolant located elsewhere back into the temperature control container 42, thereby preventing coolant leakage when disassembling the stirring hook 1, ensuring the cleanliness of the environment around the equipment, and also avoiding waste of coolant. By setting the first vent 611, the one-way air passage 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 drawn back into the temperature control container 42.

[0079] If the mixing hook 1 is disassembled while the food processor is powered off, for example, by unplugging the power cord after use, the water pump 3 will not work. Even if the first solenoid valve 6 closes the water supply line 32, the coolant in the downstream section of the water supply line 32, the first channel 21, the second channel 22, and the mixing hook 1 cannot be pumped out. The remaining coolant in the mixing hook 1 and the connecting shaft 2 will still leak, resulting in low equipment reliability. Figures 6-9 The leakage protection device also includes a temporary storage container 8 and a second solenoid valve 7. The temporary storage container 8 includes a container body 81, a pumping piston 82, and a return spring 83. The container body 81 has a water inlet 811 at the top and a second vent 812 at the bottom that communicates with the outside. The pumping piston 82 is slidably connected inside the container body 81. One end of the return spring 83 is connected to the pumping piston 82, and the other end is connected to the bottom of the container body 81.

[0080] Combination Figure 8 and Figure 13 The 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 has an inlet P, an outlet A, and an outlet B. Inlet P is connected to the inlet of the water pump 3, outlet A is connected to the water inlet 811 of the container body 81, and outlet B is connected to the pumping pipe 31. The second valve core 72 is located within the second valve body 71 and can slide within it. The second valve core 72 has an internal channel and three working positions: left, center, and right. It also has three different connecting channels corresponding to these three working positions. When the second valve core 72 is in the left position, the channel within the second valve core 72 connects inlet P and outlet B, connecting the inlet of the water pump 3 to the pumping pipe 31. When the second valve core 72 is in the right position, the channel within the second valve core 72 connects inlet P and outlet A, connecting the inlet of the water pump 3 to the water inlet 811 of the container body 81. When the second valve core 72 is in the middle position, the channel within the second valve core 72 connects outlet A and outlet B, connecting the water inlet 811 of the container body 81 to the pumping pipe 31. Two second electromagnetic coils are provided, used to drive the second valve core 72 to the left and right positions respectively. Two middle position springs 73 are provided, both connected to the second valve core 72 and located at both ends of the second valve body 71, so that when the second electromagnetic coil is de-energized, it can push the second valve core 72 back to the middle position.

[0081] When the mixing hook 1 is kneading dough, the second electromagnetic coil drives the second valve core 72 to move to the left position. The inlet of the water pump 3 is connected to the water pumping pipe 31. The water pump 3 can drive the coolant to circulate in the temperature control container 42 and the mixing hook 1, so that the circulating water cooling device can work normally. When the food processor is powered off, the second electromagnetic coil is de-energized and releases the second valve core 72. The middle position spring 73 pushes the second valve core 72 back to the middle position. The water inlet 811 of the container body 81 is connected to the water pumping pipe 31. The reset spring 83 pulls the water pumping piston 82 to draw the coolant in the mixing hook 1, connecting shaft 2 and circulation pipe 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. The inlet of the water pump 3 is connected to the water inlet 811 of the container body 81. The water pump 3 draws the coolant in the container body 81 into the temperature control container 42 and pulls up the water pumping piston 82 to stretch the reset spring 83. After the water pump 3 extracts all the coolant from the container body 81, the second electromagnetic coil drives the second valve core 72 to move to the left position.

[0082] By incorporating a second solenoid valve 7 and a power-free temporary storage container 8, when the food processor is powered off, the center spring 73 pushes the second valve core 72 back to the center position, connecting the water inlet 811 of the container body 81 to the water pumping pipe 31. Simultaneously, the reset spring 83 pulls the pumping piston 82, drawing coolant from the stirring hook 1 and connecting shaft 2 into the container body 81. This prevents coolant leakage to the outside when disassembling the stirring hook 1 after a power outage, avoiding waste and pollution to the equipment and surrounding environment, and improving equipment reliability. When the food processor is powered back on, the solenoid coil drives the second valve core 72 to the right position, connecting the inlet of the water pump 3 to the water inlet 811 of the container body 81. The water pump 3 draws coolant from the container body 81 to the temperature-controlled container 42 and lifts the pumping piston 82 to stretch the reset spring 83, ensuring the temporary storage container 8 can operate normally the next time.

[0083] When the connecting shaft 2, stirring hook 1, and various pipes and other components have a temperature difference with the air, a layer of water film will condense on their surfaces. Although the water film condensed in a short time will not have a significant impact on kneading or the equipment, when the stand mixer 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 will be large. When the air humidity is high, their surfaces are prone to producing more condensation, especially in the humid plum rain season in the south, which makes the equipment prone to rust and corrosion. The flour particles that fly up during kneading will mix with the condensation water, making it more difficult to clean the equipment. Moreover, the mixed particles will fall into the kneading basin 14 and contaminate the dough. In this embodiment of the food processor, after the mixing hook 1 finishes kneading, it stops, and the user needs to remove the kneaded dough. If kneading needs to continue, the ingredients need to be added again. When the mixing hook stops after one kneading cycle, the semiconductor temperature control chip 41 can also pass a reverse current, heating the side that is in contact with the temperature control container 42. This raises the temperature of the coolant flowing through the temperature control container 42, thus changing the internal and external temperature difference at the location where condensation mist forms, thereby eliminating condensation mist (at this point, only a very thin layer of water mist remains), similar to the defogging principle of a car windshield. This operation during the user's ingredient removal and addition helps reduce condensation, accelerates evaporation, and avoids the continuous accumulation of condensation mist caused by repeated kneading over long periods, which condenses into water droplets, thus reducing the risk of rust and corrosion due to condensation. Simultaneously, it allows the food processor to operate stably under different environmental conditions. Whether in humid southern regions or during seasonal transitions with large temperature differences, it can operate normally, broadening the applicability of the equipment.

[0084] After kneading the dough, if the stirring hook 1 is directly removed for cleaning, the coolant in the circulating water cooling system will stop circulating. When it is necessary to reduce condensate, the stirring hook 1 must be inserted back into the connecting shaft 2 for the coolant to continue circulating. Therefore, it is impossible to reduce condensate while cleaning the stirring hook 1. Figure 5 , Figure 11 and Figure 12 The food processor in this embodiment also includes a barrier assembly. The end of the connecting shaft 2 is provided with a reflux chamber and a sliding groove 25. The barrier assembly includes a barrier valve core 9 and a push spring 91. The barrier valve core 9 is slidably connected to the sliding groove 25 and extends into the reflux chamber. The barrier valve core 9 divides the reflux chamber into a first chamber 23 and a second chamber 24. The inlet and outlet of the first chamber 23 are respectively connected to the first channel 21 and the cooling chamber 11. The inlet and outlet of the second chamber 24 are respectively connected to the second channel 22 and the return water pipe 12. The barrier valve core 9 is provided with a reflux hole 92 connecting the first chamber 23 and the second chamber 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 chamber.

[0085] The sliding groove 25 has an upper limit position and a lower limit position, allowing the blocking valve core 9 to slide between the upper limit position and the lower limit position. For example... 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 back 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 has two independent openings, which 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 then flows to the second channel 22 through the return water pipe 12 and the second cavity 24. When the stirring hook 1 is disassembled 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 then flows back to the second channel 22. By setting up the barrier components, the circulation of coolant will not be interrupted after the stirring hook 1 is removed, and coolant leakage is avoided. Even during the process of disassembling, cleaning or replacing the stirring hook 1, the circulating water cooling device can still operate normally to continuously heat the coolant and remove condensate.

[0086] If coolant leaks from the connection between the connecting shaft 2 and the mixing hook 1 during the kneading process of the stand mixer, it may flow into other internal components. This could not only corrode these components, affecting their normal operation and lifespan, but also potentially cause electrical malfunctions, posing a safety hazard. Furthermore, if the coolant drips into the flour or the dough being kneaded, it will directly contaminate the ingredients. Figure 6 and Figure 7 As shown, the upper end of the stirring hook 1 is provided with a tray 13 to catch any coolant that may leak from the connection between the connecting shaft 2 and the stirring hook 1. The tray 13 effectively catches any leaked coolant, ensuring that ingredients such as flour and dough are not contaminated by the leaked coolant.

[0087] The specific working process of the food processor in this embodiment is as follows:

[0088] When the food processor is working, the drive motor 10 drives the coupling block 51 to rotate, which in turn drives the planetary gear 53 and the connecting shaft 2 to revolve around the output shaft 101 of the drive motor 10. The planetary gear 53 rotates on its own axis, which in turn drives the stirring hook 1 to rotate. At the same time, the water pump 3 drives the coolant to flow through the water supply pipe 32, the first intermediate channel 513, the first channel 21, and the first cavity 23 to the cooling cavity 11 of the stirring hook 1. Then, it flows back to the temperature control container 42 through the return water pipe 12, the second cavity 24, the second channel 22, the second intermediate channel 514, and the pumping pipe 31. The semiconductor temperature control chip 41 cools the coolant flowing through the temperature control container 42, and the heat sink 43 dissipates the heat into the air.

[0089] When the mixing hook 1 is kneading dough, the first electromagnetic coil of the first solenoid valve 6 is energized, opening the water supply pipe 32 to circulate the coolant. When the mixing hook 1 needs to be disassembled, the first electromagnetic coil is de-energized, blocking the water supply pipe 32, and the water pump 3 draws the coolant back to the temperature control container 42.

[0090] 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 reset spring 83 of the temporary storage container 8 pulls the water pumping piston 82 to draw the coolant into the container body 81 to prevent coolant leakage; when the food processor is powered on again, the second valve core 72 moves to the right position, and the water pump 3 draws the coolant in the container body 81 back to the temperature control container 42.

[0091] When it is necessary to remove condensate, the semiconductor temperature control chip 41 generates heat by passing a reverse current; after the stirring hook 1 is disassembled, the blocking valve core 9 blocks the outlet of the first chamber 23 and the second chamber 24, and connects the first chamber 23 and the second chamber 24, so that the coolant continues to circulate and continues to heat the coolant to remove condensate. The tray 13 at the upper end of the stirring hook 1 can receive the coolant that may leak from the connection between the connecting shaft 2 and the stirring hook 1, so as to avoid contaminating the food.

[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions created by the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions created by the present invention without departing from the essence and scope of the technical solutions created by the present invention.

Claims

1. A dough mixer for mixing dough, comprising a drive motor, a dough bowl and a dough hook, characterized in that, The application also comprises a connecting shaft and a circulating water cooling device, the connecting shaft is in transmission connection with the output shaft of the driving motor, the end of the connecting shaft is detachably connected with the stirring hook, the stirring hook is internally provided with a cooling cavity and a backwater pipeline which are in communication with each other, the connecting shaft is respectively provided with a first channel which is in communication with the cooling cavity and a second channel which is in communication with the backwater pipeline, the circulating water cooling device comprises: cooling liquid; a water pump which is provided with an inlet and an outlet; a circulating pipeline which comprises a water pumping pipeline and a water supplying pipeline, the water pumping pipeline is in communication with the second channel of the connecting shaft, and the water supplying pipeline is in communication with the first channel of the connecting shaft; a temperature control assembly which is used for adjusting the temperature of the cooling liquid and comprises a semiconductor temperature control sheet, a temperature control container, a heat dissipation fin and a heat dissipation fan, one side of the semiconductor temperature control sheet is attached to the temperature control container, the other side of the semiconductor temperature control sheet is attached to the heat dissipation fin, the other side of the heat dissipation fin is attached to the heat dissipation fan, the temperature control container is provided with a water inlet, the inlet of the water pump is in communication with the water pumping pipeline, the outlet of the water pump is in communication with the inlet of the temperature control container, and the outlet of the temperature control container is in communication with the water supplying pipeline; when the stirring hook is used to mix dough, the water pump drives the cooling liquid to flow from the temperature control container to the cooling cavity of the stirring hook to absorb the heat of the stirring hook, and then the cooling liquid flows back to the temperature control container from the backwater pipeline, the semiconductor temperature control sheet is in forward current to make the side attached to the temperature control container refrigerate to absorb the heat of the cooling liquid flowing through the temperature control container to reduce the temperature of the cooling liquid and transfer the heat to the heat dissipation fin, and the heat dissipation fan blows away the heat of the heat dissipation fin to the outside.

2. A pasta maker as claimed in claim 1, wherein, The application also comprises a transmission mechanism which comprises: a shaft joint block which comprises a boss end and a platform end, the boss end and the platform end are both provided with a through hole, the output shaft of the driving motor is fixedly connected with the through hole of the boss end, the connecting shaft passes through the through hole of the platform end and can rotate, the shaft joint block is also provided with a first intermediate channel, a second intermediate channel and two rotary joints, the two ends of the first intermediate channel are respectively connected with the first channel and the water supplying pipeline through the two rotary joints, the two ends of the second intermediate channel are respectively connected with the second channel and the water pumping pipeline through the two rotary joints; a planetary gear set which comprises a gear ring and a planet wheel, the gear ring is in mesh with the planet wheel, and the connecting shaft is fixedly connected with the planet wheel; when the stirring hook is used to mix dough, the driving motor drives the shaft joint block to rotate to drive the planet wheel and the connecting shaft to revolve around the output shaft of the driving motor, the planet wheel rotates to drive the stirring hook to rotate, and the water pump drives the cooling liquid to flow to the cooling cavity through the water supplying pipeline, the first intermediate channel and the first channel, and then the cooling liquid flows back to the temperature control container through the backwater pipeline, the second channel, the second intermediate channel and the water pumping pipeline.

3. A pasta maker as claimed in claim 1, wherein, The application also comprises a leakage protection device which comprises a first electromagnetic valve which is used for controlling the communication and disconnection of the water supplying pipeline, and the first electromagnetic valve comprises: a first electromagnetic coil; a first valve body which is internally provided with an upper cavity and a lower cavity, the upper cavity is provided with a first air hole which is in communication with the outside, and the lower cavity is provided with an inlet and an outlet, the upstream part and the downstream part of the water supplying pipeline are respectively in communication with the inlet and the outlet of the lower cavity; an air passage piston which is in sliding connection in the first valve body to be able to block the inlet and the outlet of the lower cavity, the air passage piston is provided with a one-way air channel, the one-way air channel is internally provided with a one-way air valve, and the communication direction of the one-way air channel is from the upper cavity to the outlet of the lower cavity; a reset spring which is connected with the top of the upper cavity at one end and connected with the air passage piston at the other end. When the stirring hook is used to mix dough, the first electromagnetic coil is energized to drive the venting piston to move to the upper cavity to open the inlet and outlet of the lower cavity to connect the upstream and downstream of the water supply pipeline. When the stirring hook needs to be removed, the first electromagnetic coil is de-energized, and the reset spring pushes the venting piston to move to the top of the lower cavity to block the inlet and outlet of the lower cavity to disconnect the upstream and downstream of the water supply pipeline. At this time, the cooling liquid in the temperature control container cannot flow out, and the water pump continues to work. External airflow enters the first venting hole and pushes the one-way venting valve away. The one-way air passage connects the upper cavity and the outlet of the lower cavity to make the cooling liquid in the downstream of the water supply pipeline, the first channel, the second channel and the stirring hook flow back to the temperature control container.

4. A pasta maker as claimed in claim 3, wherein the means for moving the pasta comprises a pair of rollers mounted on a frame and arranged to rotate in opposite directions, the rollers being arranged to move the pasta between the rollers as the rollers rotate. The leakage protection device further comprises a temporary storage container and a second electromagnetic valve, The temporary storage container comprises: a container body provided with a water inlet at the top and a second venting hole at the bottom for communication with the outside; a water pumping piston slidably connected in the container body; a reset tension spring having one end connected with the water pumping piston and the other end connected with the bottom of the container body; The second electromagnetic valve comprises: a second valve body provided with an inlet P, an outlet A and an outlet B, wherein the inlet P is in communication with the inlet of the water pump, the outlet A is in communication with the water inlet of the container body, and the outlet B is in communication with the water pumping pipeline; a second valve core slidably connected in the second valve body and provided with three working positions of left position, middle position and right position, the second valve core is provided with three different connection 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 in communication with the water pumping pipeline, when the second valve core is in the right position, the inlet of the water pump is in communication with the water inlet of the container body, and when the second valve core is in the middle position, the water inlet of the container body is in communication with the water pumping pipeline; two second electromagnetic coils for driving the second valve core to the left position and the right position, respectively; two middle position springs connected with the second valve core and located at both ends of the second valve body to reset the second valve core to the middle position; When the stirring hook is used to mix dough, the second electromagnetic coil drives the second valve core to move to the left position, the inlet of the water pump is in communication with the water pumping pipeline, and the circulating water cooling device works normally. When the chef machine is de-energized, the second electromagnetic coil releases the second valve core, the middle position spring pushes the second valve core to reset to the middle position, the water inlet of the container body is in communication with the water pumping pipeline, and the reset tension spring pulls the water pumping piston to pump the cooling liquid in the stirring hook, the connecting shaft and the circulating pipeline into the container body. When the chef machine is re-energized, the second electromagnetic coil drives the second valve core to move to the right position, the inlet of the water pump is in communication with the water inlet of the container body, the water pump pumps the cooling liquid in the container body into the temperature control container, and the water pumping piston is pumped up to stretch the reset tension spring.

5. A pasta maker as claimed in claim 1, wherein, After the stirring hook finishes mixing dough, the semiconductor temperature control sheet can also pass reverse current to heat the side adhered to the temperature control container to increase the temperature of the cooling liquid flowing through the temperature control container.

6. A pasta maker as claimed in claim 5, wherein the means for rotating the pasta comprises a motor and a belt drive. Further comprising a blocking assembly, the connecting shaft is provided with a backflow cavity and a sliding groove at the end, and the blocking assembly comprises: The barrier valve core is in sliding connection with the sliding groove and extends into the return flow cavity, and divides the return flow cavity into a first cavity and a second cavity. The inlet and outlet of the first cavity are in communication with the first channel and the cooling cavity respectively, and the inlet and outlet of the second cavity are in communication with the second channel and the return water pipeline respectively. The barrier valve core is provided with a return flow hole in communication with the first cavity and the second cavity. The push spring has one end connected with the return flow valve core and the other end connected with the top of the return flow cavity. The sliding groove is provided with an upper limit position and a lower limit position, and the barrier valve core can slide between the upper limit position and the lower limit position. When the stirring hook is connected with the connecting shaft, the top of the stirring hook is inserted into the return flow cavity and pushes the barrier valve core to retract to the upper limit position, at this time, the return flow hole is blocked, the outlets of the first cavity and the second cavity are both opened, the cooling liquid 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 separated from the connecting shaft, the push spring pushes the return flow valve core to extend to the lower limit position, at this time, the return flow hole is opened, the first cavity and the second cavity are in communication, and the outlets of the first cavity and the second cavity are both blocked, the cooling liquid directly flows from the first cavity to the second cavity through the first channel, and flows back to the second channel.

7. A pasta maker as claimed in claim 1, wherein, The upper end of the stirring hook is provided with a tray to receive the cooling liquid possibly leaked from the connection between the connecting shaft and the stirring hook.

Images