A vacuum oil frying device for fruit and vegetable chips

Abstract

The utility model discloses a kind of fruit and vegetable crisp piece vacuum oil frying device, including material frame, the vacuum oil frying pot of hoisting equipment is supported and the oil storage mechanism of storage and heating edible oil;Vacuum oil frying pot top is equipped with feed inlet, and bottom is equipped with the locating shaft of lower end outer fixed sleeve with locating disc, a group of plug-in blocks are connected to the upper end surface of locating disc, material frame bottom is equipped with a group of for the plug-in block insertion of insertion slot and for the shaft sleeve of locating shaft insertion, vacuum oil frying pot bottom is equipped with the rotating motor of frequency converter, the platform of one side being equipped with opening and being equipped with first translation mechanism is supported above oil storage mechanism, platform is sequentially equipped with support frame, pot cover and collection tray from top to bottom, lifting mechanism is detachably connected in the middle of support frame with pot cover, support frame is equipped with second translation mechanism at one end away from feed inlet;Integral set automatically open and close pot cover, accurate take and place material, collect pot cover drop oil and water, rotate oil frying and external heating, with good oil frying effect, extend oil use time and the advantage of good safety.

Description

Technical Field

[0001] This utility model belongs to the technical field of vacuum frying equipment, and more specifically, it relates to a vacuum frying device for fruit and vegetable crisps. Background Technology

[0002] Fruit and vegetable crisps are a general term for both fruit and vegetable crisps. They are various types of fruit and vegetable crisps made primarily from fruits and vegetables through a vacuum frying process. Because they retain their natural color and nutrients and extend the shelf life of food, they are popular with food processing plants and consumers. The production of fruit and vegetable crisps involves vacuum frying, and current technology typically uses vacuum frying to fry the fruits and vegetables.

[0003] However, existing vacuum frying equipment still has the following problems in actual use: First, in the frying chamber of existing fruit and vegetable vacuum fryers, the fruits and vegetables are mostly stationary during frying, resulting in uneven frying. Furthermore, the heating devices are mostly fixed inside the frying chamber, and after frying, many impurities adhere to the heating devices, making cleaning inconvenient and accumulating over time. These impurities affect the frying quality of the fruits and vegetables and shorten the oil usage time. Second, existing fruit and vegetable vacuum fryers mostly require manual opening of the lid to remove and place the basket containing the fruit and vegetable pieces into the frying chamber. This is not only time-consuming and labor-intensive, but the basket is also prone to being misplaced, causing damage to the heating device and affecting the frying quality of the product. Moreover, when manually opening the lid, residual oil or water inside the lid can easily flow onto people, the ground, or the outside of the machine, making cleaning difficult. If the high-temperature hot oil and accumulated water and oil on the ground are not cleaned up in time, they also pose safety hazards. Overall, the problems include poor frying effect, difficult cleaning, and safety risks. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a vacuum frying device for fruit and vegetable crisps, which integrates automatic and precise feeding and dispensing functions, automatic opening and closing of the pot lid and collection of oil and water after opening the lid, vacuum rotary frying function and oil removal function. It adopts an external heating method, has a simple internal structure of the frying chamber, is easy to clean, and has the advantages of good frying effect, extended oil usage time and good safety.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A vacuum frying device for fruit and vegetable crisps includes a vacuum fryer, a material frame, and an oil storage mechanism for recycling, storing, and heating edible oil. The vacuum fryer has a feeding port at the top and a positioning shaft at the bottom. A positioning plate is fixedly sleeved on the lower end of the positioning shaft. A set of inserts is connected to the upper surface of the positioning plate. The bottom of the material frame has a set of slots for inserting the inserts and a bushing for the positioning shaft to pass through. A rotary motor for driving the positioning shaft to rotate is installed at the bottom of the vacuum fryer. The rotary motor is connected to a frequency converter. A lifting device for picking up and placing the material frame is mounted above the vacuum fryer. A platform is mounted above the oil storage mechanism. An opening is provided on one side of the platform for the top of the vacuum fryer to pass through. A support frame, a lid, and a collection tray are arranged sequentially from top to bottom on the platform. A lifting mechanism with a drive end detachably connected to the top of the lid is installed in the middle of the support frame. A first translation mechanism and a second translation mechanism are installed on the platform to drive the support frame and the collection tray to move horizontally towards the feeding port along opposite sides of the platform.

[0007] Further configuration: A set of limiting plates extends outward from the top two outer sides of the material frame; positioning rods in an inverted L-shape are symmetrically arranged on opposite sides inside the feed inlet; the horizontal end of the positioning rod away from the vertical end is fixedly connected to the feed inlet; a limiting channel is formed between the limiting plates of the same set for the positioning rod to pass through; the distance between the bottom of the positioning rod and the top of the insert block is greater than the distance between the top of the material frame and the top of the slot; the distance between the top of the positioning shaft and the bottom of the limiting rod is less than the height of the material frame; and a platform is provided on the other side of the vacuum fryer.

[0008] Further configuration: The oil storage mechanism includes a housing and a heating device. An oil storage chamber is located on one side of the housing, and a heating chamber is located on the other side. A first filter screen is installed at the upper end of the oil storage chamber. The bottom of the vacuum fryer has a lower oil inlet pipe and an oil outlet pipe, both equipped with valves, on both sides. The oil outlet pipe is connected to the top of one side of the oil storage tank. The lower end of one side of the heating chamber is connected to the lower end pipe of the other side of the oil storage chamber. The lower oil inlet pipe is connected to the bottom pipe of the other side of the heating chamber. An oil pump is connected to the oil outlet pipe. The vacuum fryer is equipped with a liquid level sensor and a first temperature sensor, and the heating chamber is equipped with a second temperature sensor.

[0009] Further configuration: One side of the oil storage tank is provided with an upper cleaning port and a lower cleaning port with sealed doors. The bottom of the upper cleaning port is flush with the top of the first filter screen. The other side of the tank is provided with a vacuum filter chamber arranged parallel to the heating device. The vacuum filter chamber contains, from top to bottom, a first filter structure, a second filter structure, and a third filter structure with progressively smaller pore sizes. The bottom of the oil storage tank is connected to the upper end of one side of the vacuum filter chamber. The upper end of one side of the vacuum fryer is provided with an upper oil inlet pipe with a valve, which is connected to the bottom of the other side of the vacuum filter chamber. The upper end of the oil storage tank is provided with an oil-gas separator with a top pipe connected to a vacuum pump. The lower end of the oil-gas separator is provided with a first air inlet pipe, a second air inlet pipe, and an oil outlet pipe, all equipped with valves. The oil outlet pipe is connected to the top of the oil storage tank. The first air inlet pipe is connected to the upper end of the other side of the vacuum fryer, and the second air inlet pipe is connected to the top of the vacuum filter chamber.

[0010] Further configuration: The first translation mechanism includes a set of first electric push rods and a set of mounting bases. The set of first electric push rods are respectively located on the other opposite sides of the platform. The first electric push rods are mounted on the side of the platform through the mounting bases. The top rod of the first electric push rod is detachably connected to both sides of the support frame.

[0011] Further configuration: A sliding guide mechanism is provided between the two sides of the support frame and the platform. The sliding guide mechanism includes a set of guide wheels and a set of guide rails for the guide wheels to slide along the opposite sides of the platform. The guide wheels are respectively installed on the bottom of the two sides of the support frame, and the guide rails are installed on the other opposite sides of the platform. The length direction of the guide rails is parallel to the line connecting the opposite sides of the platform.

[0012] Further configuration: The second translation mechanism includes a U-shaped mounting plate and a set of second electric push rods. The top rods of the set of second electric push rods are detachably connected to both sides of the collection tray through the mounting plate. The set of second electric push rods are respectively installed on both sides of the support frame. The mounting plate slides along the line connecting the opposite sides of the platform and is connected to the platform.

[0013] Further configuration: The lifting equipment is a wire rope electric hoist, and a trolley track is installed above the vacuum fryer, with the wire rope electric hoist slide connected to the trolley track.

[0014] In summary, this utility model achieves the function of automatically opening and closing the pot lid through a platform, a first translation mechanism, a lifting mechanism, and a support frame. When it is necessary to close the pot lid, the first translation mechanism is activated first, and the guide wheels slide directionally on the guide rail, driving the support frame, lifting mechanism, pot lid, second translation mechanism, and collection tray to move together until the pot lid is directly above the feed inlet. Then, the second translation mechanism is activated, driving the pot lid, which was originally directly below the pot lid, to move back to above the platform. After that, the lifting mechanism is activated, driving the pot lid to descend and tightly cover the upper surface of the feed inlet. When it is necessary to automatically open the pot lid, the lifting mechanism is activated first to raise the pot lid, and then the second translation mechanism is activated. The mechanism moves the collecting tray horizontally to directly below the lid, and then activates the first translation mechanism to move the lid and collecting tray back to the platform, automatically opening the lid while simultaneously collecting the oil and water that falls inside the lid. The oil storage chamber, vacuum oil filtration chamber, and heating chamber store, heat, and filter edible oil, facilitating cleaning of the vacuum fryer's interior and further improving frying efficiency and extending oil usage time. The lifting device, positioning shaft, positioning plate, insert block, bushing, and slot enable automatic and precise material handling. The rotary motor and frequency converter enable vacuum rotary frying and automatic oil removal, further ensuring optimal frying results.

[0015] This invention solves the problems of poor frying effect and shortened oil usage time caused by the static frying of fruits and vegetables in the existing frying chamber, the difficulty in cleaning the heating device in the frying chamber leading to the accumulation of impurities, and the poor frying effect and safety hazards caused by poor positioning of the material frame during manual opening and unloading of materials, and the easy dripping of residual oil or water from the inside of the lid onto people, the ground, or the outside of the machine. The whole system integrates automatic and accurate material loading and unloading, automatic lid opening and closing, automatic collection of oil and water dripping from the inside of the lid, vacuum rotary frying, and oil removal functions. It adopts an external heating method, has a simple internal structure of the frying chamber, is easy to clean, and has the advantages of good frying effect, extended oil usage time, and good safety. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present utility model;

[0017] Figure 2 This is a partial structural diagram of the pot lid and collecting tray at their initial positions according to Embodiment 1 of this utility model;

[0018] Figure 3 This is an exploded view of a portion of the structure of an embodiment of the present utility model;

[0019] Figure 4 This is a partial cross-sectional view of the pot lid in the closed state according to an embodiment of the present invention;

[0020] Figure 5This is a schematic diagram of the material frame structure in Embodiment 1 of this utility model;

[0021] Figure 6 This is a partial structural diagram of the material frame and vacuum fryer in Embodiment 1 of this utility model;

[0022] Figure 7 This is a cross-sectional view of the lower end of the box body in Embodiment 1 of this utility model;

[0023] Figure 8 This is a partial cross-sectional view of the pot lid in the open state according to Embodiment 1 of this utility model;

[0024] Figure 9 This is a schematic diagram of the structure of an embodiment of the present invention where the pot lid is moved horizontally above the feed inlet;

[0025] Figure 10 This is a schematic diagram of the structure of the collection tray in Embodiment 2 of this utility model.

[0026] In the diagram: 1. Vacuum fryer; 2. Material frame; 3. Feed inlet; 4. Positioning shaft; 5. Positioning plate; 6. Insert block; 7. Slot; 8. Bushing; 9. Rotary motor; 10. Frequency converter; 11. Lifting equipment; 12. Platform; 13. Support frame; 14. Lid; 15. Collection tray; 16. Lifting mechanism; 17. Limiting plate; 18. Positioning rod; 19. Limiting channel; 20. Platform; 21. Housing; 22. Heating device; 23. Oil storage chamber; 24. Heating chamber; 25. First filter screen; 26. Lower oil inlet pipe; 27. Oil outlet pipe; 28. Oil pump; 29. 30. Liquid level sensor; 31. First temperature sensor; 32. Second temperature sensor; 33. Upper cleaning port; 34. Lower cleaning port; 35. Vacuum filter chamber; 36. First filter structure; 37. Second filter structure; 38. Third filter structure; 39. Upper oil inlet pipe; 40. Oil-gas separator; 41. First air inlet pipe; 42. Second air inlet pipe; 43. Oil outlet pipe; 44. First translation mechanism; 45. Second translation mechanism; 46. Guide wheel; 47. Guide rail; 48. Opening; 49. Mounting plate; 50. Second electric push rod; 51. Fixed joint; 52. Water outlet. Detailed Implementation

[0027] To explain the technical content, objectives, and effects of this utility model in detail, the following description is provided in conjunction with the embodiments and accompanying drawings. It should be noted that the terms "upper" and "lower" used in the following description refer to the attached drawings. Figure 4 The direction in the middle, the words "bottom" and "top" refer to the attached Figure 4 The direction of the center of a specific component's geometry is referred to as "the height h of the material frame". In the text, "the height h of the material frame" refers to the vertical distance between the bottom and top of the material frame.

[0028] Please refer to Figures 1 to 9As shown, Embodiment 1 of this utility model is as follows:

[0029] A vacuum frying device for fruit and vegetable crisps includes a vacuum fryer 1, a material frame 2, and an oil storage mechanism for recycling, storing, and heating edible oil. The vacuum fryer 1 has a feeding inlet 3 at the top and a positioning shaft 4 inside the bottom. A positioning plate 5 is fixedly sleeved on the lower end of the positioning shaft 4. A set of insert blocks 6 are connected to the upper surface of the positioning plate 5. The bottom of the material frame 2 has a set of slots 7 for inserting the insert blocks 6 and a bushing 8 for the positioning shaft 4 to pass through. A rotary motor 9 for driving the positioning shaft 4 to rotate is installed at the bottom of the vacuum fryer 1. The rotary motor 9 is connected to a frequency converter 10. A lifting device 11 for loading and unloading the material frame 2 is mounted above the vacuum fryer 1. A platform 12 is mounted above the oil storage mechanism. An opening 47 is provided on one side of the platform 12 for the top of the vacuum fryer 1 to pass through. A support frame 13, a pot lid 14, and a collection tray 15 are arranged sequentially from top to bottom on the platform 12. A lifting mechanism 16 with a drive end detachably connected to the top of the pot lid 14 is installed in the middle of the support frame 13. A first translation mechanism 43 is installed on the platform 12 to drive the support frame 13 to move horizontally towards the feed inlet 3 along the opposite sides of the platform 12. A second translation mechanism 44 is installed at the end of the support frame 13 away from the feed inlet 3 to drive the collection tray 15 to move horizontally towards the feed inlet 3 along the opposite sides of the platform 12.

[0030] As described above, when the pot lid 14 needs to be automatically closed, the first translation mechanism 43, the support frame 13, and the lifting mechanism 16 are activated. First, the drive end of the first translation mechanism 43 extends, causing the support frame 13 to move upwards towards the feed inlet 3 along the line connecting the opposite sides of the platform 12. This causes the lifting mechanism 16, the pot lid 14, the second translation mechanism 44, and the collecting tray 15 to move upwards towards the feed inlet 3 until the pot lid 14 is directly above the feed inlet 3. Then, the second translation mechanism 44 is activated, and its push rod retracts, causing the collecting tray 15 to move back to its original position away from the feed inlet 3 until it is back to its original position above the platform 12. After that, the lifting mechanism 16 is activated, and the drive end of the lifting mechanism 16... The lid 14 is lowered until its bottom is in contact with the upper surface outside the feed inlet 3, thus achieving automatic opening and closing. When the lid 14 needs to be opened automatically, the lifting mechanism 16 is activated first. The driving end of the lifting mechanism 16 drives the lid 14 to rise and return to its initial position. Then, the second translation mechanism 44 is activated. The driving end of the second translation mechanism 44 drives the collection tray 15 to move upward above the feed inlet 3 until the collection tray 15 is directly below the lid 14. After that, the first translation mechanism 43 is activated. The driving end of the first translation mechanism 43 retracts, driving the support frame 13, lid 14, collection tray 15, lifting mechanism 16 and second translation mechanism 44 to move and return to their original positions closer to the platform 12. This achieves the functions of automatically opening the lid and automatically collecting oil and water that falls inside the lid 14.

[0031] The oil storage mechanism stores and heats edible oil, enabling external heating of the vacuum fryer 1. This simplifies the internal structure of the vacuum fryer 1 and solves the problem of poor frying effect and shortened oil usage time caused by the accumulation of impurities in the heating device 22 due to its difficulty in cleaning. When the lid 14 is opened, the lifting device 11, positioning shaft 4, positioning plate 5, insert 6, bushing 8, and slot 7 are activated. The drive end of the lifting device 11 lowers the material frame 2 containing fruit and vegetable pieces toward the feed inlet 3. The bushing 8 of the material frame 2 first passes through the positioning shaft 4 until the bottom of the material frame 2 contacts the positioning plate 5. The insert 6 on the positioning plate 5 is then inserted into the slot 7 at the bottom of the material frame 2. Removing the material frame 2 is done by reversing the process, thus achieving automatic... The vacuum fryer 1 has the function of precisely picking up and placing ingredients. When the lid 14 is closed and the fruits and vegetables are ready for vacuum frying, the rotary motor 9 drives the positioning shaft 4 and positioning plate 5 to rotate, thereby driving the material frame 2 to rotate at a low speed. The material frame 2 is used to micro-stir the oil in the vacuum fryer 1, so that the oil temperature in all corners of the pot is kept even, ensuring that the fruits and vegetables in the material frame 2 are in uniform contact with the oil, thus achieving the effect of vacuum rotary frying. After vacuum frying is completed, the oil in the vacuum fryer 1 is recycled to the oil storage mechanism. The frequency converter 10 controls the rotary motor 9 to run at high speed, which throws out the oil remaining in the material frame 2 under the action of centrifugal force and discharges it into the oil storage mechanism, thus achieving the function of automatic oil removal. This controls the crispness and oil content of the fried food, and further ensures the frying effect.

[0032] Furthermore, a set of limiting plates 17 are provided on the two outer sides of the top of the material frame 2. On the opposite sides of the feed inlet 3, positioning rods 18 are symmetrically arranged in an inverted L shape. The horizontal section of the positioning rod 18 is fixedly connected to the feed inlet 3 at the end away from the vertical section. A limiting channel 19 is formed between the limiting plates 17 in the same set for the positioning rod 18 to pass through. The distance between the bottom of the positioning rod 18 and the top of the insert block 6 is greater than the distance between the top of the material frame 2 and the top of the slot 7. The distance between the top of the positioning shaft 4 and the bottom of the limiting rod is less than the height h of the material frame 2. A platform 20 is provided on the other side of the vacuum fryer 1.

[0033] As described above, when the material frame 2 needs to be placed in the vacuum fryer 1, during the process of the lifting equipment 11 moving the material frame 2 downward toward the feed inlet 3, the positioning rod 18 and a set of limiting rods are used to ensure the accuracy and stability of the positioning of the material frame 2 during descent. The positioning rod 18 is inserted into the limiting channel 19 between a set of limiting plates 17. If the driving end of the lifting equipment 11 is a hook-like device that can be swung and rotated, before the material frame 2 is about to completely enter the feed inlet 3, the person can manually rotate and adjust the material frame 2 from the platform 20 until the positioning rod 18 is positioned between the limiting plates 17. Within the positioning channel 19, the bushing 8 of the material frame 2 is aligned with the positioning shaft 4, which further ensures the accuracy of material feeding. The distance between the bottom of the positioning rod 18 and the top of the insert block 6 is set to be greater than the distance between the top of the material frame 2 and the top of the slot 7 to prevent the positioning rod 18 from interfering with the rotation of the material frame 2 with the positioning shaft 4. By setting the distance between the top of the positioning shaft 4 and the bottom of the limiting rod to be less than the height h of the material frame 2, it is ensured that when the limiting rod leaves the bottom of the positioning rod 18, the positioning shaft 4 has already been inserted into the bushing 8, which further improves the positioning accuracy of the material frame 2 placed in the vacuum fryer 1.

[0034] The material frame in this embodiment has a detachable cover plate. The detachable connection method between the cover plate and the material frame body is existing technology and is not shown in the figure. The detachable connection method can be a bolt and threaded ring connection or a locking block and locking groove connection. Since it is existing technology, it will not be described in detail.

[0035] Furthermore, the oil storage mechanism includes a housing 21 and a heating device 22. An oil storage chamber 23 is provided on one side of the housing 21, and a heating chamber 24 is provided on the other side of the housing 21. A first filter screen 25 is installed at the upper end of the oil storage chamber 23. The bottom of the vacuum fryer 1 is provided with a lower oil inlet pipe 26 and an oil outlet pipe 27, both equipped with valves. The oil outlet pipe 27 is connected to the top of one side of the oil storage tank. The lower end of one side of the heating chamber 24 is connected to the lower end pipe of the other side of the oil storage chamber 23. The lower oil inlet pipe 26 is connected to the lower end pipe of the other side of the heating chamber 24. An oil pump 28 is connected to the oil outlet pipe 27. A liquid level sensor 29 and a first temperature sensor 30 are provided inside the vacuum fryer 1. A second temperature sensor 31 is provided inside the heating chamber 24.

[0036] As described above, when vacuum frying fruits and vegetables, initially, the oil in the oil storage chamber 23 enters the heating chamber 24 from the bottom through a pipe. The oil is heated by the heating device 22. The heated oil then enters the vacuum fryer 1 from the bottom through the lower oil inlet pipe 26, ensuring uniform frying temperature. When the oil level in the vacuum fryer 1 reaches a preset quantitative value, the level sensor 29 sends a signal to the external controller. The external controller then starts the oil pump 28. The oil in the vacuum fryer 1 first enters the oil storage chamber 23 from the top through the oil outlet pipe 27 from the bottom of the vacuum fryer 1. The oil is then filtered by the first filter screen 25 to prevent impurities from entering the heating chamber 24. The first temperature sensor 30 and the second temperature sensor 31 are used to detect whether the oil temperature in the heating chamber 24 has reached the preset range. If it exceeds the preset range, the external controller controls the heating device 22 to stop heating. If the oil temperature is insufficient, heating continues to ensure uniform frying temperature.

[0037] The heating device 22 in this embodiment is existing technology and can be a heating coil or a double-spiral steam heating pipe, etc. It is not limited to the above structure, as long as it can automatically heat the oil. To avoid dry burning, a liquid level sensor 29 can also be installed in the heating chamber 24 or a magnetic switch (not shown in the figure) can be installed on the lower oil inlet pipe 26.

[0038] Furthermore, one side of the oil tank is provided with an upper cleaning port 32 and a lower cleaning port 33 with a sealed door. The bottom of the upper cleaning port 32 is flush with the upper end of the first filter screen 25. On the other side of the tank body 21, a vacuum filter chamber 34 is provided, arranged parallel to the heating device 22. Inside the vacuum filter chamber 34, a first filter structure 35, a second filter structure 36, and a third filter structure 37 with progressively smaller filter pore sizes are connected from top to bottom. The bottom of the oil tank is connected to the upper end of one side of the vacuum filter chamber. The upper end of one side of the vacuum fryer 1... An upper oil inlet pipe 38 with a valve is provided, which is connected to the bottom of the other side of the vacuum filter chamber 34. An oil-gas separator 39 with a top pipe connected to a vacuum pump (not shown in the figure) is provided at the top of the oil storage tank. The lower end of the oil-gas separator 39 is provided with a first air inlet pipe 40, a second air inlet pipe 41 and an oil drain pipe 42, all with valves. The oil drain pipe 42 is connected to the top of the oil storage tank. The first air inlet pipe 40 is connected to the upper end of the other side of the vacuum fryer 1. The second air inlet pipe 41 is connected to the top of the vacuum filter chamber 34.

[0039] As described above, after frying for a period of time, impurities will accumulate at the bottom of the oil storage chamber 23. To facilitate cleaning the oil storage chamber 23, a vacuum pump is used to evacuate the vacuum filter chamber 34, creating negative pressure inside. The oil in the oil storage chamber 23 enters the top of the vacuum filter chamber 34 from the bottom of the oil storage chamber 23 through a pipe. It then passes through the first filter structure 35, the second filter structure 36, and the third filter structure 37, with progressively smaller pore sizes, undergoing coarse, medium, and fine filtration from top to bottom. The oil, cleaned through multiple layers, then enters the vacuum fryer 1 from the top of one side of the vacuum fryer 1 through the oil inlet pipe 38 at the bottom of the vacuum filter chamber 34. This process effectively removes impurities from the oil in the oil storage chamber 23. After filtering and transferring the oil, the sealing doors of the upper cleaning port 32 and the lower cleaning port 33 are opened. Using a long-handled cleaning tool, impurities on the first filter screen 25 and at the bottom of the oil storage chamber 23 are cleaned from the upper and lower cleaning ports 33 to the outside of the oil storage chamber 23. After the oil storage chamber 23 is cleaned, the sealing doors of the upper cleaning port 32 and the lower cleaning port 33 are closed. The clean oil in the vacuum fryer 1 is then transported back to the oil storage tank through the oil outlet pipe 27 using the oil pump 28. This further ensures the frying effect and extends the oil's usage time. In this embodiment, the oil is filtered, separated from the gas, and recycled after frying, which is energy-saving and environmentally friendly. The oil-gas separator 39 is existing technology and will not be described in detail here.

[0040] In this embodiment, the first filter structure 35, the second filter structure 36, and the third filter structure 37 are all composed of filter screens and filter cloths. The filter pore size of the filter cloths of the first filter structure 35, the second filter structure 36, and the third filter structure 37 decreases sequentially. This structure is not limited to this type; other filter plates with different pore sizes are also acceptable, as long as they can achieve the function of progressively filtering oil. To facilitate the replacement and cleaning of the first filter structure 35, the second filter structure 36, and the third filter structure 37, a cleaning port for the door to be sealed can be detachably connected to one side of the vacuum filter chamber 34. In addition, the bottom of the vacuum fryer 1 is provided with a slag removal port (not shown in the figure). Since the top of the lid 14 is detachably connected to the lifting mechanism 16, the lid can be disassembled and cleaned separately when it needs to be cleaned.

[0041] Furthermore, the first translation mechanism 43 includes a set of first electric push rods and a set of mounting bases. The set of first electric push rods are located on the other opposite sides of the platform 12. The first electric push rods are mounted on the side of the platform 12 through the mounting bases. The top rods of the first electric push rods are detachably connected to the two sides of the support frame 13.

[0042] As can be seen from the above description, when it is necessary to automatically open or close the pot lid 14, the first electric push rod is activated. The push rod of the first electric push rod extends or retracts, driving the support frame 13 to move horizontally upward toward or away from the feed inlet 3 along the line connecting the opposite sides of the platform 12. This causes the lifting mechanism 16, the pot lid 14, the second translation mechanism 44, and the collection tray 15 to move horizontally upward toward or away from the feed inlet 3.

[0043] Furthermore, a sliding guide mechanism is provided between the two sides of the support frame 13 and the platform 12. The sliding guide mechanism includes a set of guide wheels 45 and a set of guide rails 46 for the guide wheels 45 to slide along the opposite sides of the platform 12. The guide wheels 45 are respectively installed on the bottom of the two sides of the support frame 13, and the guide rails 46 are installed on the other opposite sides of the platform 12. The length direction of the guide rails 46 is parallel to the line connecting the opposite sides of the platform 12.

[0044] As can be seen from the above description, the support frame 13 slides directionally on the guide rail 46 along the line connecting the two sides of the platform 12 via the guide wheel 45, which further ensures that the support frame 13 moves directionally along the opposite sides of the platform 12, thereby improving the translation accuracy of the support frame 13.

[0045] Furthermore, the second translation mechanism 44 includes a U-shaped mounting plate 48 and a set of second electric push rods 49. The top rods of the set of second electric push rods 49 are detachably connected to both sides of the collection tray 15 through the mounting plate 48. The set of second electric push rods 49 are respectively installed on both sides of the support frame 13, and the mounting plate 48 is slidably connected to the platform 12 along the line connecting the opposite sides of the platform 12. In this embodiment, the detachable connection between the mounting plate and the collection tray 15 can be a bolt thread connection, or a snap-fit ​​or plug-in connection. It is not limited to the above-mentioned detachable connection method. Other detachable connection fixing structures that can realize the detachable connection between the top rods of the second electric push rods 49 and the collection tray 15 are also acceptable.

[0046] As can be seen from the above description, when it is necessary to drive the collection tray 15 to move closer to or away from the pot lid 14 directly below, the second electric push rod 49 is activated. The top rod of the second electric push rod 49 extends or retracts, driving the mounting plate 48 and the collection tray 15 together to move closer to or away from the pot lid 14 directly below, thereby realizing the function of automatically driving the collection tray 15 to move horizontally.

[0047] The first translation mechanism 43 and the second translation mechanism 44 in this embodiment are not limited to electric push rods. Other translation drive structures, such as translation cylinders or oil cylinders, can be used as long as they can synchronously drive the pot lid 14 or the collection tray 15 to translate.

[0048] Furthermore, the lifting device 11 is a wire rope electric hoist, and a trolley track is installed above the vacuum fryer 1, with the wire rope electric hoist slide connected to the trolley track.

[0049] The lifting device 11 is not limited to the wire rope electric hoist; it can also be a robotic arm or any other lifting structure that can automatically pick up and place the material frame 2 into the vacuum fryer 1. In this embodiment, the lifting mechanism 16 is a lifting cylinder. The lifting cylinder is detachably and fixedly installed on the top of the support frame 13. The top rod of the lifting cylinder is detachably connected to the outer top of the lid 14. It is not limited to this structure; any other lifting structure that can drive the lid 14 to lift is acceptable. To ensure sealing, a sealing ring is provided on the upper surface of the feed inlet 3.

[0050] Example 2 differs from Example 1 in that, as shown in Figure 10, the collection tray 15 is a square tray, and all four sides of the collection tray 15 are detachably connected to fixing connectors 50 for fixing water hose connectors. One side of the collection tray is provided with a water outlet 51 with a sealing plug. The fixing connectors 50 are inclined upward towards the center of the collection tray. When it is necessary to clean the inside of the pot lid 14, the nozzle of the water supply pipe is a flexible hose, which can be fixed on the fixing connector 50. The inclined water flow is used to rinse and clean the inside of the pot lid 14, and the impurities and sewage washed down fall into the collection tray.

[0051] In summary, compared with the prior art, this utility model has the advantages of good frying effect, extended oil usage time, and good safety. When it is necessary to close the pot lid 14, the first translation mechanism 43 is activated first, and the drive end of the first translation mechanism 43 extends, driving the support frame 13 to move horizontally above the feed inlet 3 via the guide wheel 45 on the guide rail 46. This drives the lifting mechanism 16, the pot lid 14, the second translation mechanism 44, and the collecting tray 15 to move horizontally together until the pot lid 14 is directly above the feed inlet 3. Then, the second translation mechanism 44 is activated, and the top rod of the second translation mechanism 44 retracts, driving the original position directly below the pot lid 14 to be reset and moved horizontally above the platform 12. After that, the lifting mechanism 16 is activated, driving the pot lid 14 to descend until the pot lid 14 tightly covers the upper surface of the feed inlet 3. When it is necessary to open the pot lid 14, the reverse is true. First, activate the lifting mechanism 16. The lifting mechanism 16 lifts the lid 14 back to its initial position, then activates the second translation mechanism 44 to move the collection tray 15 directly below the lid 14. Afterwards, the first translation mechanism 43 is activated to move the lid 14 and collection tray 15 back to their original positions on the platform 12, automatically opening the lid and collecting any oil or water that falls inside the lid 14. The oil storage chamber 23, vacuum oil filter chamber, and heating chamber 24 store, heat, and filter edible oil, facilitating cleaning of the vacuum fryer 1 and further improving frying efficiency and extending oil usage time. The lifting device 11, positioning shaft 4, positioning plate 5, insert block 6, bushing 8, and slot 7 enable automatic and precise material handling. The rotary motor 9 and frequency converter 10 enable vacuum rotary frying and automatic oil removal, further ensuring optimal frying results.

[0052] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A vacuum frying device for fruit and vegetable crisps, characterized in that: The device includes a vacuum fryer, a material frame, and an oil storage mechanism for recycling, storing, and heating edible oil. The vacuum fryer has a feed inlet at the top and a positioning shaft at the bottom. A positioning plate is fixedly fitted onto the lower end of the positioning shaft, and a set of insert blocks are connected to the upper surface of the positioning plate. The bottom of the material frame has a set of slots for the insert blocks to be inserted and a bushing for the positioning shaft to pass through. A rotary motor for driving the positioning shaft to rotate is installed at the bottom of the vacuum fryer, and the rotary motor is connected to a frequency converter. A lifting device for loading and unloading the material frame is mounted above the vacuum fryer. A platform is mounted above the oil storage mechanism, and one side of the platform has an opening for the top of the vacuum fryer to pass through. From top to bottom, a support frame, a lid, and a collection tray are sequentially arranged on the platform. A lifting mechanism with a drive end detachably connected to the top of the lid is installed in the middle of the support frame. A first translation mechanism is installed on the platform to drive the support frame to move horizontally towards the feed inlet along opposite sides of the platform. A second translation mechanism is installed on the end of the support frame away from the feed inlet to drive the collection tray to move horizontally towards the feed inlet along opposite sides of the platform.

2. The vacuum frying device for fruit and vegetable crisps according to claim 1, characterized in that: A set of limiting plates extends outward from the top two outer sides of the material frame. A positioning rod in an inverted L-shape is symmetrically arranged on both sides of the feed inlet. The horizontal end of the positioning rod away from the vertical end is fixedly connected to the feed inlet. A limiting channel is formed between the limiting plates of the same set for the positioning rod to pass through. The distance between the bottom of the positioning rod and the top of the insert block is greater than the distance between the top of the material frame and the top of the slot. The distance between the top of the positioning shaft and the bottom of the limiting rod is less than the height of the material frame. A platform is provided on the other side of the vacuum fryer.

3. The vacuum frying device for fruit and vegetable crisps according to claim 1, characterized in that: The oil storage mechanism includes a housing and a heating device. An oil storage chamber is located on one side of the housing, and a heating chamber is located on the other side. A first filter screen is installed at the upper end of the oil storage chamber. The bottom of the vacuum fryer has a lower oil inlet pipe and an oil outlet pipe, both equipped with valves, on both sides. The oil outlet pipe is connected to the top of one side of the oil storage tank. The lower end of one side of the heating chamber is connected to the lower end pipe of the other side of the oil storage chamber. The lower oil inlet pipe is connected to the bottom pipe of the other side of the heating chamber. An oil pump is connected to the oil outlet pipe. The vacuum fryer is equipped with a liquid level sensor and a first temperature sensor, and the heating chamber is equipped with a second temperature sensor.

4. The vacuum frying device for fruit and vegetable crisps according to claim 3, characterized in that: The oil storage tank has an upper cleaning port and a lower cleaning port with a sealed door on one side. The bottom of the upper cleaning port is flush with the top of the first filter screen. The other side of the tank has a vacuum filter chamber arranged parallel to the heating device. The vacuum filter chamber has a first filter structure, a second filter structure, and a third filter structure with progressively smaller pore sizes connected from top to bottom. The bottom of the oil storage tank is connected to the upper end of one side of the vacuum filter chamber. The upper end of one side of the vacuum fryer has an upper oil inlet pipe with a valve, which is connected to the bottom of the other side of the vacuum filter chamber. The upper end of the oil storage tank has an oil-gas separator with a top pipe connected to a vacuum pump. The lower end of the oil-gas separator has a first air inlet pipe, a second air inlet pipe, and an oil outlet pipe, all with valves. The oil outlet pipe is connected to the top of the oil storage tank. The first air inlet pipe is connected to the upper end of the other side of the vacuum fryer, and the second air inlet pipe is connected to the top of the vacuum filter chamber.

5. The vacuum frying device for fruit and vegetable crisps according to claim 1, characterized in that: The first translation mechanism includes a set of first electric push rods and a set of mounting bases. The set of first electric push rods are located on the other opposite sides of the platform. The first electric push rods are mounted on the side of the platform through the mounting bases. The top rods of the first electric push rods are detachably connected to the two sides of the support frame.

6. The vacuum frying device for fruit and vegetable crisps according to claim 1, characterized in that: A sliding guide mechanism is provided between the support frame and the platform on both sides. The sliding guide mechanism includes a set of guide wheels and a set of guide rails for the guide wheels to slide along the opposite sides of the platform. The guide wheels are respectively installed on the bottom of the two sides of the support frame, and the guide rails are installed on the other opposite sides of the platform. The length direction of the guide rails is parallel to the line connecting the opposite sides of the platform.

7. The vacuum frying apparatus for fruit and vegetable crisps according to claim 6, characterized in that: The second translation mechanism includes a U-shaped mounting plate and a set of second electric push rods. The top rods of the set of second electric push rods are detachably connected to both sides of the collection tray through the mounting plate. The set of second electric push rods are respectively installed on both sides of the support frame. The mounting plate slides along the line connecting the opposite sides of the platform and is connected to the platform.

8. The vacuum frying device for fruit and vegetable crisps according to claim 1, characterized in that: The lifting equipment is a wire rope electric hoist, and a trolley track is installed above the vacuum fryer, with the wire rope electric hoist slide connected to the trolley track.

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