Automatic stir-frying equipment

Abstract

The invention relates to the technical field of food processing, and particularly discloses automatic stir-frying equipment which comprises an oil refining pot and a material stir-frying pot, the oil refining pot and the material stir-frying pot each comprise a pot body, a stirrer and a heater, the stirrer is used for stretching into the pot body to stir materials, the heater is used for heating the pot body, the pot body is provided with an interlayer, and the interlayer contains heat conduction oil; the interlayer is communicated with an oil inlet and an oil outlet, the oil inlet is used for injecting heat conduction oil, the oil outlet is used for discharging the heat conduction oil, a circulating pump is connected between the oil inlet and the oil outlet, the oil outlet is communicated with the feeding end of the circulating pump through a pipeline, and a cooler is installed on the pipeline between the oil outlet and the feeding end; the oil delivery pump is used for delivering raw materials in the oil refining pot to the frying pot, the output end of the oil delivery pump is connected with an oil spray nozzle, and the oil spray nozzle sprays oil into a pot body of the frying pot. The scheme is used for solving the problems of low efficiency, high labor cost and safety risk in manual material transfer in current food processing.

Description

Technical Field

[0001] The invention relates to the technical field of food processing, and in particular to automatic stir-frying equipment. Background Art

[0002] With the improvement of living standards, more and more semi-finished food products or food are processed in factories and packaged for sale. Take the common food processing technology involving oil refining, frying and stirring as an example. It starts with refining oil in the oil refining pot, then frying the ingredients in the frying pot, and finally mixing the frying materials with other raw materials in the stirring device. This series of processes are independent of each other, and the material transfer mainly relies on manual operation, which greatly reduces the overall production efficiency. For example, after the oil refining process is completed in the oil refining pot, the operator needs to tilt the pot body and pour the high-temperature oil into the transfer barrel for cooling. During the pouring process, in order to ensure that the high-temperature oil can be completely caught, the transfer barrel needs to constantly adjust its position with the tilted pot body, which is not only complicated to operate, but also poses great safety risks. When the oil cools to the appropriate temperature, it needs to be manually transferred to the frying pot for frying with other raw materials. After the frying is completed, the materials in the frying pot are transferred to the stirring device manually again, and the final mixing is carried out with other raw materials. After the mixing is completed, the finished product is sent to the packaging link.

[0003] In actual food processing, heating and stir-frying operations are frequent, and the pots used are multifunctional, and stirrers are often installed in the pot body, so that this type of pot can be used for both oil refining and frying. For those products that need to be packaged and sold or need to reach a specific temperature when used, it is often necessary to take out the materials in the pot and transfer them to other containers for cooling. This cooling method is particularly common in heating pots with interlayer heating. Taking the raw material mixing equipment for butter and ghee production with patent announcement number CN208809987U and the large rotary interlayer soup pot with patent announcement number CN102949086B as examples, by adding heat-conducting oil in the interlayer, the pot body is heated more evenly, which helps to heat the materials evenly. However, since the heat in the interlayer is difficult to dissipate quickly, pouring out the raw materials has become a common method to speed up the cooling rate. Even in common non-interlayer heating equipment, such as the high-temperature aroma-explosion device with patent announcement number CN118454568B and its application in the preparation of natural aroma raw material seasoning oil and a steam heating pot with patent announcement number CN203341509U, special discharge nozzles and discharge shafts are set to facilitate material dumping. This shows that no matter which type of heating pot is used, after the heating operation is completed, if natural cooling is adopted, the cooling speed is very slow; and pouring the heated raw materials into other containers for cooling can speed up the cooling, but it will increase the labor cost of material transfer, and during the transfer, because the materials in the pot are all at high temperature, there will inevitably be safety hazards.

[0004] In summary, the existing food processing process has problems such as low efficiency, safety risks and high labor costs in terms of process connection, material transfer and cooling, and a new technical solution is urgently needed to improve it. Summary of the invention

[0005] The present invention is intended to provide an automated stir-frying device to solve the problems of low efficiency, high labor costs and safety risks in manual material transfer in current food processing.

[0006] In order to achieve the above object, the present invention adopts the following technical scheme:

[0007] An automatic stir-frying device comprises an oil refining pot and a stir-frying pot, both of which comprise a pot body, a stirrer and a heater, the stirrer being used for extending into the pot body to stir materials, the heater being used for heating the pot body, the pot body being provided with an interlayer containing heat transfer oil, an oil inlet and an oil outlet being connected between the interlayer, the oil inlet being used for injecting heat transfer oil, the oil outlet being used for discharging heat transfer oil, a circulating pump being connected between the oil inlet and the oil outlet, the oil outlet being connected to a feed end of the circulating pump through a pipeline, a cooler being installed on the pipeline between the oil outlet and the feed end; and an oil delivery pump being used for delivering raw materials in the oil refining pot to the stir-frying pot, the output end of the oil delivery pump being connected to an oil spray nozzle, and the oil spray nozzle spraying oil into the pot body of the stir-frying pot.

[0008] The principle and advantage of this scheme are: when this scheme is adopted, after the oil refining in the oil refining pot is completed, there is no need to manually transfer the materials. It is only necessary to start the circulation pump to make the heat transfer oil continuously flow through the cooler, so that the heat transfer oil used for heat conduction in the heating process is used for heat exchange in the cooling stage, thereby realizing rapid cooling of the materials in the pot body, eliminating the step of transferring the raw materials in the pot body to achieve rapid cooling, thereby ensuring the working efficiency of the stir-frying equipment, without increasing the labor cost, and avoiding the safety hazards caused by the transfer of high-temperature materials.

[0009] In addition, in the heat transfer oil of the present invention, during the working stage of the heater, because the heat transfer oil is located in the interlayer, the interlayer surrounds the inner wall of the pot body that contacts the raw material. Therefore, after the heater is heated, the heat generated by the heater will be transferred to different heights of the pot body under the heat conduction of the heat transfer oil, thereby helping the pot body to be heated more evenly, and can reduce or even avoid the occurrence of paste, coke, etc.; and in the cooling stage, the flow of the heat transfer oil serves as a heat exchange source to achieve rapid heat exchange.

[0010] In addition, after the oil temperature in the oil refining pot drops to the appropriate temperature, the oil pump can be directly started to evenly spray the oil needed for the frying pot into the frying pot, realizing active feeding into the frying pot. The pumping method can conveniently install a flow meter on the pumping pipeline to accurately measure the pumped oil volume, thereby ensuring the flavor consistency of the fried ingredients in the frying pot and helping to improve food quality.

[0011] Preferably, as an improvement, a temperature sensor is provided in the pot body, and the temperature sensor is used to detect the temperature of the raw materials in the pot. The temperature sensor and the circulation pump are connected to the controller. The controller is used to start the circulation pump after receiving a cooling instruction, and control the circulation pump to stop starting after the temperature sensor senses that the temperature reaches the set temperature, so as to improve the degree of automation.

[0012] Preferably, as an improvement, the discharge port of the pot body is arranged at the bottom of the pot body, and any one of a plug / partition / discharge valve is provided on the discharge port of the frying pot, and the plug / partition / discharge valve is used to open or close the discharge port. The discharge port of the oil refining pot is installed with a discharge valve, and the output end of the discharge valve is connected to the oil pump, and a second temperature sensor is installed on the output pipeline of the oil pump. A second cooler is also installed on the oil pipeline of the oil pump, and the oil first passes through the second cooler and then flows through the second temperature sensor. The second cooler and the oil pump are both connected to a controller, and the controller is used to reduce the pumping speed of the oil pump when the temperature sensed by the second temperature sensor is higher than a preset value, so that the oil stays in the second cooler for a longer time, thereby performing secondary cooling on the oil output by the oil pump.

[0013] It should be pointed out that after the oil refining pot is finished, there is often a lot of oil in the pot, and the oil in the frying pot cannot be used up quickly. There is a situation where some oil is used first and some oil is used later. When this solution is used, the oil temperature in the pot can be lowered to a certain temperature first, and then the second cooler is used for the second cooling when it is used. This ensures that the oil that needs to be used faster can meet the frying needs of the frying pot in the subsequent process immediately after the second cooling, and can also meet the oil temperature requirements when frying in the second and third pots. This avoids the problem of affecting the consistency of food flavor caused by the oil being used at too high a temperature or too low a temperature after being transferred and cooled in the transfer barrel in the prior art.

[0014] In addition, the discharge port in the pot is opened at the bottom of the pot, so that the raw materials in the pot can be discharged more easily, which helps to reduce the energy consumption of the oil pump. In addition, when the material is discharged from the bottom of the pot, the raw materials close to the inner wall of the pot are the first to cool down in the pot, so the purpose of using the oil in the pot that cools down first is achieved first, which further helps to reduce the temperature in the pot to meet the needs of frying in the subsequent process.

[0015] Preferably, as an improvement, the cooler connected to the oil drain port and / or the second cooler both include a cooling box, the cooling box contains cooling liquid, a spiral pipe is provided in the cooling box, the spiral pipe is immersed in the cooling liquid, one end of the spiral pipe is used to connect to the oil drain port / the discharge port of the oil refinery, and the other end of the spiral pipe is used to connect to the circulation pump / oil transfer pump. This solution has a simple structure and the spiral pipe helps to prolong the residence time of the cooled material in the environment surrounded by the cooling liquid, thereby helping to improve the cooling efficiency.

[0016] Preferably, as an improvement, the oil refining pot and the frying pot both include a pot cover covering the opening of the pot body, the pot cover is connected with a smoke exhaust pipe, the smoke exhaust pipe is a hose or a telescopic tube with an adjustable bending path, the smoke exhaust pipe is connected to the range fumes extraction device, a smoke sensor is installed in the smoke exhaust pipe, the smoke sensor and the range fumes extraction device are both connected to a controller, and the controller is used to start the range fumes extraction device after the smoke concentration collected by the smoke sensor reaches a set value.

[0017] Beneficial effects: This solution uses a pot cover structure with a smoke exhaust pipe to ensure that the fumes during the oil refining and frying processes are discharged in time, avoiding the slow exhaust speed of the fumes and overflowing into the environment where the frying equipment is located, thereby reducing the problem of the quality of the workers' working environment. In addition, the direct covering method has a higher suction efficiency, which helps to save energy, reduce consumption and reduce noise of the range hood.

[0018] Preferably, as an improvement, the controller sets the set concentration for starting the range fumes extraction device in different levels, and the fume concentrations at different levels correspond to different extraction speeds when the range fumes extraction device is started. The greater the fume concentration in the exhaust pipe, the faster the corresponding extraction speed, so as to further improve the intelligent control of fume extraction, take into account energy saving and consumption reduction, and ensure that when the fume concentration is very high, the extraction speed is automatically adjusted in time and quickly, to ensure that the fume can be discharged in time and quickly regardless of its size.

[0019] Preferably, as an improvement, the agitator also includes a driving motor, a stirring shaft and a stirring blade fixed on the stirring shaft, the driving motor is fixedly mounted on the top of the pot cover, the stirring shaft extends deep into the pot body, the stirring shaft includes a first section and a second section, the first section is fixedly connected to the output end of the driving motor, the stirring blade is mounted on the second section, the first section is sleeved with the second section, and the second section can move axially relative to the first section, and also includes a locking member for locking the relative position of the first section and the second section; when the height of the stirring blade needs to be adjusted according to different stirring tasks, the locking member can first release the lock on the first section and the second section, and after the relative position of the first section and the second section is adjusted, the length of the stirring shaft is adjusted, that is, the height of the stirring blade in the pot body is changed, thereby adapting to the stirring / frying requirements of different height requirements.

[0020] Preferably, as an improvement, the driving motor of the stirrer is mounted on the pot cover, a guide column is fixed in the pot body, and the stirring shaft of the stirrer is rotatably connected to the guide column at the end away from the driving motor, so that the stirrer can rotate stably when frying the ingredients.

[0021] Preferably, as an improvement, the pot cover is dome-shaped, the drive motor is installed on the top of the pot cover, a feeding port is provided on the curved side of the pot cover, the feeding port is covered by a sliding door, and the sliding door slides along the surface of the pot cover. This solution facilitates the covering of the feeding port by the sliding door, and the sliding mode of the sliding door can also achieve the adjustment of the exposed size of the feeding port, so as to meet the frying needs in different situations, and the dome-shaped pot cover makes the surface area of ​​the pot cover larger, so as to facilitate a larger feeding port, and also facilitate the installation of a smoke exhaust pipe, an oil nozzle, etc. on the pot cover.

[0022] Preferably, as an improvement, the stirring blades of the stirrer include upper inclined plates and lower arc blades fixed at different heights of the stirring shaft, the number of upper inclined plates is at least 2, the number of lower arc blades is also at least 2, the lower arc blades are inclined relative to the arc bottom surface of the inner wall of the pot body, and the lower arc blades are at different distances from the arc bottom surface of the pot body at different radial positions of the stirring shaft. This solution enables stirring / frying faster and more evenly through the upper inclined plates and lower arc blades, while the lower arc blades make stirring / frying more labor-saving and contact with more and more sufficient raw materials during stirring / frying, which helps to improve the stirring / frying efficiency.

[0023] Preferably, as an improvement, it also includes a stirring device and a conveying pump, the feed end of the conveying pump is connected to the discharge port of the frying pot, and one end of the conveying pump is connected to the stirring barrel of the stirring device, so that the fried materials can be promptly delivered to the stirring device by the conveying pump for timely stirring, thereby further realizing automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a front cross-sectional view of the first embodiment of the present invention.

[0025] Figure 2 for Figure 1 A partial schematic diagram of .

[0026] Figure 3 for Figure 1 A partial schematic diagram of the remaining part.

[0027] Figure 4 This is a schematic diagram of the three-dimensional structure of the first embodiment of the present invention when only the oil refining pot and the frying pot are shown (the frying pot shown in the figure has an oil spray nozzle installed on the pot cover compared to the oil refining pot).

[0028] Figure 5 for Figure 4 Schematic diagram of the three-dimensional structure of the oil refining pot.

[0029] Figure 6 for Figure 5 Schematic diagram of the three-dimensional structure when one of the sliding doors on the middle pot cover is opened to expose the material feeding port.

[0030] Figure 7This is a schematic diagram of the three-dimensional structure in which the second section of the stirring shaft is not inserted into the first section in Example 1 of the present invention.

[0031] Figure 8 for Figure 7 The first and second sections are changed into a schematic diagram of a three-dimensional structure when regular hexagons are used for matching (the second section is inserted into the first section in the figure).

[0032] Fig. 9 This is a partial three-dimensional structural schematic diagram of the first section and the second section of the stirring shaft of the first embodiment of the present invention, in which the lengths are adjusted by threaded connection.

[0033] Fig.10 It is the front view of the second embodiment of the invention.

[0034] Fig.11 For the second embodiment of the invention, only the three-dimensional structural schematic diagram of the oil refining pot, the frying pot and the stirring device is shown.

[0035] Fig.12 for Fig.11 Schematic diagram of the three-dimensional structure of the stirring device. DETAILED DESCRIPTION

[0036] The following is further described in detail through specific implementation methods:

[0037] The reference numerals in the drawings of the specification include: oil refining pot 100, frying pot 200, oil pump 300, second cooler 301, second temperature sensor 302, flow meter 303, oil nozzle 304, pot body 10, interlayer 101, oil inlet 102, U-shaped elbow 1021, blower 1022, oil discharge port 103, temperature sensor 104, discharge valve 105, guide column 106, pot cover 20, feeding port 201, sliding door 202, exhaust pipe 203 , annular chute 204, agitator 30, agitator shaft 1, first section 11, second section 12, abutment surface 121, locking piece 13, agitator blade 2, driver 3, upper inclined plate 21, lower arc blade 22, combustion heater 40, circulating pump 50, cooler 60, cooling box 61, spiral pipe 62, guide body 70, combustion chamber 701, agitator 400, conveying pump 500, feeding pipe 401, storage tank 402, weigher 403, moving wheel 404.

[0038] Embodiment 1

[0039] Basically as attached Figures 1 to 9 shown.

[0040] Combination Figures 1 to 6 An automated stir-frying device includes an oil refining pot 100, a stir-frying pot 200 and an oil delivery pump 300. The oil delivery pump 300 is used to pump the oil in the oil refining pot 100 into the stir-frying pot 200.

[0041] The oil refining pot 100 and the frying pot 200 both include a pot body 10, a pot cover 20, an agitator 30 and a combustion heater 40. The pot body 10 has a circular cross-section and is fixedly supported by supporting legs. The pot body 10 has an interlayer 101, which is a cavity. The cavity of the interlayer 101 is used to accommodate heat transfer oil. The top of the cavity is connected with an oil inlet 102 and an oil outlet 103, which are respectively located on both sides of the pot body 10; the oil inlet 102 is used to inject heat transfer oil, and the oil outlet 103 is used to discharge heat transfer oil. A circulating pump 50 is connected between the oil inlet 102 and the oil outlet 103, and the oil outlet 103 is connected to the feed end of the circulating pump 50 through a pipeline. A cooler 60 is installed on the pipeline between the oil outlet 103 and the feed end.

[0042] Specifically, the cooler 60 includes a cooling box 61, in which cooling liquid is contained. A spiral pipe 62 is provided in the cooling box 61, one end of the spiral pipe 62 is connected to the oil discharge port 103, and the other end of the spiral pipe 62 is connected to the feed end of the circulation pump 50, so that when the pot body 10 is in a heated state and the raw materials are stirred, the heat transfer oil is used to play a heat transfer role to ensure that the temperature of the inner wall of the pot body 10 is uniform; and when the stirring is completed and the material in the pot body 10 needs to be cooled, the circulation pump 50 is started, so that the heat transfer oil circulates continuously and flows through the spiral pipe 62 where the cooling liquid is located. The spiral pipe 62 greatly prolongs the time that the heat transfer oil is surrounded by the cooling liquid, thereby continuously replacing the heat in the raw materials and realizing rapid cooling of the raw materials in the pot body 10.

[0043] In actual use, when the pot body 10 is heated, the heat transfer oil in the interlayer 101 will be vaporized. To avoid excessive pressure in the interlayer, a U-shaped bend pipe such as that in patent announcement No. CN102949086B (that is, the U-shaped bend pipe 1021 in the figure, that is, the heat medium oil pipeline in the disclosed technology) can be connected at the oil inlet 102 or the oil outlet 103. The top of the U-shaped bend pipe is higher than the interlayer 101, and a blower 1022 is connected to the other end of the U-shaped bend pipe 1021. The vaporized heat transfer oil is sent to the combustion heater 40 for combustion by the blower 1022.

[0044] A temperature sensor 104 is provided in the pot body 10, and the temperature sensor 104 is used to detect the temperature of the raw materials in the pot. The temperature sensor 104 and the circulation pump 50 are connected to the controller, and the controller is used to start the circulation pump 50 after receiving the cooling instruction, and control the circulation pump 50 to stop starting after the temperature sensor 104 senses that the temperature reaches the set temperature. A reminder connected to the controller is also included, and the reminder is used to issue a sound reminder after the temperature in the pot body 10 reaches the set temperature after cooling, so as to improve the degree of automation.

[0045] A discharge port is provided at the bottom of the pot body 10, and the discharge port is used to discharge the material in the pot body 10. A discharge valve is installed on the discharge port, and the discharge valve is directly connected to the oil pump 300. The output pipeline of the oil pump 300 is sequentially installed with a second cooler 301, a second temperature sensor 302, a flow meter 303 and an oil nozzle 304. The oil first passes through the second cooler 301 and then flows through the second temperature sensor 302, and then flows through the flow meter 303 to record the flow rate and then is sprayed from the oil nozzle 304 into the pot body 10 of the stir-fry pot 200. The second cooler 301 and the oil pump 300 are both connected to a controller. The controller is used to reduce the pumping speed of the oil pump 300 when the temperature sensed by the second temperature sensor 302 is higher than a preset value, so that the temperature of the oil sprayed to the oil nozzle 304 can reach the set temperature. There are multiple oil spray nozzles 304, which are all fixed on the dome-shaped pot cover 20 of the stir-fry pot 200 and evenly distributed around the stirrer 30 (the oil spray nozzles are at a higher height from the pot body 10, so that the spraying area of ​​the oil spray nozzles 304 is larger, which is more conducive to evenly distributing the oil and reducing the impact of over-temperature oil on the color of the raw materials). The second cooler 301 has the same structure as the cooler 60. One end of the spiral pipe of the second cooler 301 is connected to the output end of the oil pump 300, and the other end is connected to the oil spray nozzles 304.

[0046] The pot cover 20 is detachably connected to the pot body 10. The top of the pot body 10 is open. The pot cover 20 is a dome-shaped structure. The pot cover 20 covers the top opening of the pot body 10. A feeding port 201 is provided on the pot cover 20. The feeding port 201 is a large opening arranged on the side of the arc-shaped pot cover 20. An arc-shaped sliding door 202 is installed on the large opening. The sliding door 202 is slidably connected to the pot cover 20. When the sliding door 202 slides, it rotates around the center of the pot cover 20.

[0047] Specifically, a circular groove 204 is arranged on the edge surface of the pot cover 20, and at least two sliding columns are installed on the sliding door. The sliding columns are all slidably connected in the circular groove 204. The sliding columns are cylindrical and inserted into the circular groove 204, so that the sliding door 202 can use the sliding columns to move along the circular groove 204 to cover the feeding port 201 and adjust the opening size of the feeding port 201, so as to facilitate the feeding; and the sliding door 202 cooperates with the setting of the arc-shaped pot cover 20 so that the feeding port 201 can be set to a larger size, so as to facilitate the addition of materials into the pot body 10, and at the same time, it is convenient to close the feeding port 201 after the materials are added, so as to help increase the temperature in the pot body 10. The sliding door 202 can be transparent, so as to facilitate the viewing of the frying situation through the sliding door 202; and the main part of the pot cover 20 is made of metal high-temperature resistant material, such as stainless steel, so that the pot cover 20 has sufficient strength.

[0048] In addition, a smoke exhaust pipe 203 is also connected to the pot cover 20 of the present embodiment. The smoke exhaust pipe 203 is a hose or a telescopic pipe with an adjustable bending path. The smoke exhaust pipe 203 is connected to the oil fume extraction device. An oil fume sensor is installed in the smoke exhaust pipe 203. The oil fume sensor and the oil fume extraction device are both connected to the controller. The controller is used to start the oil fume extraction device after the oil fume concentration collected by the oil fume sensor reaches a set value. The controller also sets the set concentration for starting the oil fume extraction device in different grades. The oil fume concentrations of different grades correspond to different extraction speeds when the oil fume extraction device is started. The greater the oil fume concentration of the smoke exhaust pipe 203, the faster the corresponding extraction speed, so as to further improve the intelligent control of oil fume extraction, take into account energy saving and environmental protection, and ensure that when the oil fume concentration is very high, the extraction speed is automatically adjusted in a timely and rapid manner to ensure that the oil fume can be discharged in a timely and rapid manner regardless of its size.

[0049] Combination Figures 7 to 9 The agitator 30 includes a driving motor 3, a stirring shaft 1 and a stirring blade 2. The driving motor 3 is used to drive the stirring shaft 1 to rotate. The driving motor 3 is fixed to the top of the pot cover 20. The stirring blade 2 is fixed on the stirring shaft 1. The stirring blade 2 penetrates into the pot body 10 to stir the material so that the material in the pot body 10 is stirred evenly. At the same time, it also helps to increase the cooling rate through stirring during the cooling process.

[0050] The length of the stirring shaft 1 can be adjusted. Specifically, the stirring shaft 1 includes a first section 11 and a second section 12. The first section 11 is fixedly connected to the output end of the rotary drive 3. The drive 3 is fixedly mounted on the stirring device, and the drive 3 is used to drive the stirring shaft 1 to rotate.

[0051] The stirring blade 2 is fixed on the second section 12 away from the driving machine 3. The first section 11 is sleeved with the second section 12, and the second section 12 can move axially relative to the first section 11. It also includes a locking member 13 for locking the relative position of the first section 11 and the second section 12.

[0052] In one embodiment, the length of the stirring shaft 1 is adjustable as follows: a section of the first section 11 toward the second section 12 is processed into a sleeve, the top of the second section 12 is processed into a shaft section, the shaft section is sleeved with the sleeve, a locking member 13 is threadedly connected to the sleeve, and the locking member 13 is a locking pin, which is inserted into the sleeve and abuts against the shaft section of the second section 12. In order to increase the locking force of the locking pin on the shaft section, at least one abutting surface 121 is provided on the shaft section, and the shaft section can be Figure 7 The cylindrical shaft shown has an axial abutment groove, which can also be Figure 8The shaft section is a polygonal structure (a regular hexagonal structure in the figure), and the sleeve and the polygonal cross-section of the shaft section are matched with each other; when the length of the stirring shaft 1 is adjusted, the locking pin is screwed to release the locking pin from pressing against the second section 12, and then the second section 12 is controlled to slide axially relative to the first section 11, thereby adjusting the overall length of the stirring shaft 1. After the length adjustment is completed, the locking pin is screwed again so that the locking pin presses the second section 12 against the inner wall of the sleeve of the first section 11, thereby ensuring that the length of the stirring shaft 1 will not change easily.

[0053] Combination Fig. 9 In another embodiment, the length of the stirring shaft 1 is adjustable as follows: the first section 11 and the second section 12 are connected by threads, an internal thread is set in the sleeve of the first section 11, and an external thread is set in the shaft section of the second section 12. The locking member 13 is a locking nut, which is threadedly connected to the external thread. After the relative positions of the first section 11 and the second section 12 are adjusted, the locking nut is used to press against the bottom end surface of the first section 11 to achieve locking of the lengths of the first section 11 and the second section 12; when adjusting the length, the locking nut is first screwed away from the first section 11, and then the second section 12 is screwed, so that the axial position of the second section 12 relative to the first section 11 changes. After the adjustment is completed, the locking nut is screwed again until it presses against the bottom end surface of the first section 11, thereby completing the locking of the length of the stirring shaft 1. In this embodiment, the height position of the stirring blade 2 relative to the pot body 10 is adjusted by adjusting the length of the stirring shaft 1, and after the height is adjusted, the distance between the stirring blade 2 and the inner wall of the pot body 10 is adjusted to meet different frying requirements.

[0054] The stirring blade 2 includes an upper inclined plate 21 and a lower arc blade 22 at different heights. There are multiple upper inclined plates 21 and lower arc blades 22, and they are evenly distributed around the stirring shaft 1. Each lower arc blade 22 is arc-shaped, and the arc-shaped lower arc blade 22 makes the distance between the lower arc blade 22 and the inner wall of the pot body 10 gradually change, thereby reducing the difficulty of the lower arc blade 22 when stirring.

[0055] When this embodiment is adopted, the stirring shaft 1 with adjustable length is used to meet the stirring requirements of different stirring tasks, and the upper inclined plate 21 and the lower arc-shaped blades 22 are arranged to achieve high stirring efficiency and more uniform stirring.

[0056] In addition, in order to ensure the stability of the stirring shaft 1 in rotation in the frying device, a guide column 106 is fixed at the bottom of the pot body 1 of the frying pot 200, and the second section 12 of the stirring shaft 1 is rotatably connected to the guide column 106. The specific guide column 106 is coaxial with the stirring shaft 1 and is cylindrical. The cylindrical guide column 106 is equivalent to forming a circular convex column. A groove is processed at the bottom of the second section 12, and the convex column is inserted into the groove. There is a distance between the top of the guide column 106 and the bottom of the groove, so that even after the length of the stirring shaft 1 is adjusted, the bottom of the stirring shaft 1 can still be rotatably connected to the guide column 106, ensuring that when the stirring shaft 1 rotates, both ends are limited, thereby ensuring the rotation stability of the stirring shaft 1 in the frying pot 200.

[0057] The combustion heater 40 is located below the pot body 10 and also includes a guide body 70 for preventing rapid heat dissipation. The pot body 10 is in an arc structure. The guide body 70 surrounds the pot body 10 from the bottom of the pot body 10. A combustion chamber 701 is formed between the guide body 70 and the bottom of the pot body 10. The combustion chamber 701 encloses the interlayer 101. The middle of the combustion chamber 701 is connected to an installation chamber. The combustion heater 40 is installed in the installation chamber. The flame and heat generated by the heating of the combustion heater 40 are directed toward the combustion chamber 701, so that the heat generated by the combustion heater 40 can quickly heat up the heat transfer oil in the interlayer 101.

[0058] When the present embodiment is adopted, the sliding door 202 of the oil refining pot 100 is opened to put raw materials into the oil refining pot 100. During the oil refining process of the oil refining pot 100, the agitator 30 stirs and the combustion heater 40 heats the pot body 10, so that the oil refining pot 100 refines oil. After the oil refining is completed, the oil temperature is about 500°C. However, the refined oil in the oil refining pot 100 needs to be cooled to about 150°C before it can be used for frying in the frying pot 200 to ensure that the color and flavor of the raw materials in the frying pot 200 are not affected. Therefore, after the oil refining of the oil refining pot 100 is completed, the controller controls the circulation pump 50 to circulate and cool the heat transfer oil in the interlayer 101, thereby reducing the oil temperature in the oil refining pot 100, especially reducing the oil temperature close to the inner wall of the pot. When the temperature of the temperature sensor 104 reaches a preset temperature such as 190°C, the circulation pump 50 is controlled to stop circulating.

[0059] When the oil pump 300 delivers the oil in the oil refining pot 100, the discharge valve 105 of the oil refining pot 100 opens, and the oil flows through the oil pump 300, the second cooler 301, and the second temperature sensor 104, and is finally sprayed into the pot body 10 of the frying pot 200 from the oil nozzle 304 fixed on the pot cover 20 of the frying pot 200.

[0060] In this process, the oil can be directly cooled by the heat transfer oil without the need for transfer cooling. When cooling, the circulating pump 50 cools the oil for the first time, but the use temperature of the oil by the oil nozzle 304 is lower than the oil temperature in the oil refinery 100, and the use temperature of the oil nozzle 304 is about 150°C, so the second cooler 301 is used for secondary cooling. The two coolings ensure that although the temperature in the oil refinery 100 is not reduced to the temperature required by the oil nozzle 304 at one time, it just meets the oil consumption in the oil refinery 100 and the oil temperature requirements of the oil nozzle 304, and the part of the oil that is cooled first can be used first, thereby ensuring the matching relationship between the cooling in the oil refinery 100 and the use of the oil, which is helpful for energy saving during cooling.

[0061] In addition, the cooled oil is pumped by the oil pump 300, which realizes the automatic oil delivery in the stir-frying equipment, and helps to ensure the quality consistency of food processing.

[0062] In addition, the presence of the stirrer 30 is also helpful for stirring / frying the ingredients and also helps to cool down faster.

[0063] Embodiment 2

[0064] Combination Fig.10 and Fig.12 , Embodiment 2 is further improved on the basis of Embodiment 1, and the details are as follows:

[0065] An automated stir-frying device also includes a stirring device 400 and a delivery pump 500. The feed end of the delivery pump 500 is connected to the discharge port of the stir-frying pot, and one end of the delivery pump 500 is connected to the stirring barrel of the stirring device 400, so that the stir-fried materials can be promptly delivered to the stirring device 400 by the delivery pump 500 for timely stirring, thereby further realizing automation.

[0066] In a specific scheme, the stirring device 400 also includes a pot body, a pot cover and an agitator. The agitator of the stirring device 400 also adopts the agitator of Example 1. A connecting feeding pipe 401 is installed on the pot cover of the stirring device 400. The output end of the conveying pump 500 is connected to the feeding pipe 401. A plurality of storage tanks 402 are also installed on the pot cover of the stirring device 400, and the plurality of discharge tanks are all used for adding raw materials.

[0067] A discharge valve is installed at the discharge port at the bottom of the pot body of the stirring device 400 , and the output end of the discharge valve is aligned with the weighing device 403 . The weighing device 403 is used to weigh each discharge of the stirring device 400 .

[0068] The pot body of the stirring device 400 is supported by an oil support frame, and moving wheels 404 are installed at the bottom of the support frame of the stirring device 400 to facilitate the stirring device 400 to move to different places.

[0069] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. An automatic stir-frying device, comprising an oil refining pot and a stir-frying pot, wherein the oil refining pot and the stir-frying pot each comprise a pot body, a stirrer and a heater, wherein the stirrer is used to extend into the pot body to stir the material, and the heater is used to heat the pot body, and wherein the device is characterized in that: The pot body is provided with an interlayer, which contains heat-conducting oil. The interlayer is connected with an oil inlet and an oil outlet. The oil inlet is used to inject heat-conducting oil, and the oil outlet is used to discharge the heat-conducting oil. A circulating pump is connected between the oil inlet and the oil outlet. The oil outlet is connected to the feed end of the circulating pump through a pipeline. A cooler is installed on the pipeline between the oil outlet and the feed end. The pot body also includes an oil pump for delivering raw materials in the oil refining pot to the frying pot. The output end of the oil pump is connected to an oil spray nozzle, which sprays oil into the pot body of the frying pot.

2. The automatic stir-frying equipment according to claim 1, characterized in that: A temperature sensor is provided in the pot body, and the temperature sensor is used to detect the temperature of the raw materials in the pot. The temperature sensor and the circulation pump are connected to the controller. The controller is used to start the circulation pump after receiving a cooling instruction, and control the circulation pump to stop starting after the temperature sensor senses that the temperature reaches the set temperature.

3. An automatic stir-frying equipment according to claim 2, characterized in that: The discharge port of the pot body is arranged at the bottom of the pot body, and any one of a plug / partition / discharge valve is provided on the discharge port of the frying pot, and the plug / partition / discharge valve is used to open or close the discharge port. The discharge port of the oil refining pot is installed with a discharge valve, and the output end of the discharge valve is connected to the oil pump. A second temperature sensor is installed on the output pipeline of the oil pump, and a second cooler is also installed on the oil pipeline of the oil pump. The oil first passes through the second cooler and then flows through the second temperature sensor. The second cooler and the oil pump are both connected to the controller. The controller is used to reduce the pumping speed of the oil pump when the temperature sensed by the second temperature sensor is higher than a preset value.

4. The automatic stir-frying equipment according to claim 3, characterized in that: The cooler connected to the oil discharge port and / or the second cooler both include a cooling box, which contains cooling liquid. A spiral pipe is provided in the cooling box, which is immersed in the cooling liquid. One end of the spiral pipe is used to connect to the oil discharge port / discharge port of the oil refinery, and the other end of the spiral pipe is used to connect to the circulation pump / oil transfer pump.

5. An automatic stir-frying device according to any one of claims 1 to 4, characterized in that: The oil refining pot and the frying pot both include a pot cover that covers the open mouth of the pot body, and the pot cover is connected with a smoke exhaust pipe, which is a hose or a telescopic tube with an adjustable bending path. The smoke exhaust pipe is connected to the range fumes extraction device, and a smoke sensor is installed in the smoke exhaust pipe. The smoke sensor and the range fumes extraction device are both connected to a controller, and the controller is used to start the range fumes extraction device after the smoke concentration collected by the smoke sensor reaches a set value.

6. The automatic stir-frying equipment according to claim 5, characterized in that: The controller sets the set concentration for starting the range fumes extraction device in different levels, and the fume concentrations at different levels correspond to different extraction speeds when the range fumes extraction device is started. The greater the fume concentration of the exhaust pipe, the faster the corresponding extraction speed.

7. The automatic stir-frying equipment according to claim 5, characterized in that: The stirrer also includes a driving motor, a stirring shaft and a stirring blade fixed on the stirring shaft. The driving motor is fixedly installed on the top of the pot cover, and the stirring shaft extends deep into the pot body. The stirring shaft includes a first section and a second section. The first section is fixedly connected to the output end of the driving motor, and the stirring blade is installed on the second section. The first section is sleeved with the second section, and the second section can move axially relative to the first section. It also includes a locking member for locking the relative position of the first section and the second section.

8. The automatic stir-frying equipment according to claim 5, characterized in that: The driving machine of the stirrer is installed on the pot cover, a guide column is fixed in the pot body, and the stirring shaft of the stirrer is rotatably connected to the guide column at one end away from the driving machine.

9. The automatic stir-frying equipment according to claim 8, characterized in that: The pot cover is dome-shaped, the driving machine is arranged on the top of the pot cover, a feeding port is arranged on the arc-shaped side of the pot cover, the feeding port is covered by a sliding door, and the sliding door slides along the surface of the pot cover.

10. An automatic stir-frying device according to any one of claims 1-4, 6-9, characterized in that: The stirring blades of the stirrer include an upper inclined plate and a lower arc blade fixed at different heights of the stirring shaft, the number of the upper inclined plates is at least 2, the number of the lower arc blades is also at least 2, the lower arc blades are inclined relative to the arc bottom surface of the inner wall of the pot body, and the distance between the lower arc blade and the arc bottom surface of the pot body is different at different radial positions of the stirring shaft.

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