Low-temperature vacuum frying device for crisp winter jujubes

Abstract

The utility model discloses a low-temperature vacuum frying device for crisp winter jujubes, which belongs to the technical field of frying and comprises a supporting box, a frying pan is embedded in the center of the supporting box, an oil draining mechanism is arranged in the frying pan, a sealing cover is arranged above the oil draining mechanism, and a mounting groove matched with the sealing cover is arranged on the upper end face of the supporting box. The top of the sealing cover is connected with a vacuumizing structure; an oil outlet is formed in the outer side wall of the supporting box body and communicated with the fryer. The low-temperature vacuum frying device for the crisp winter jujubes is easy to operate and high in frying efficiency, and the crisp winter jujubes are good in taste and high in nutritive value.

Description

Technical Field

[0001] This utility model relates to the field of frying technology, and in particular to a low-temperature vacuum frying device for crispy winter dates. Background Technology

[0002] Crispy jujubes are a popular snack, prized for their crunchy texture and high nutritional value. The processing steps are: fresh, 70-80% ripe jujubes – washing – pitting – color protection – deep-frying and dehydration – oil removal – rapid cooling – packaging. Under normal atmospheric pressure, water boils at 100°C, while oil boils at an even higher temperature. However, in a vacuum environment, the pressure decreases, lowering the boiling point of liquids. For example, at a certain vacuum level, the boiling point of water can drop to around 40°C to 60°C. Therefore, during low-temperature vacuum frying, even at lower oil temperatures, the moisture in the food boils rapidly and converts into steam, achieving rapid dehydration. Furthermore, vacuum frying, due to its lower frying temperature (generally between 80℃ and 120℃), significantly reduces the destruction and loss of nutrients in food, such as vitamins and minerals, compared to traditional high-temperature frying (usually between 160℃ and 180℃ or even higher). Simultaneously, low-temperature frying effectively inhibits Maillard reactions and oil oxidation. Maillard reactions cause food to darken in color and produce harmful substances such as acrylamide, while oil oxidation degrades oil quality, produces harmful substances, and affects the flavor and shelf life of food. Based on these considerations, this invention proposes a low-temperature vacuum frying device for crispy winter jujubes. Utility Model Content

[0003] The purpose of this invention is to provide a low-temperature vacuum frying device for crispy winter dates, which solves the problems mentioned above.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] This utility model discloses a low-temperature vacuum frying device for crispy winter dates, comprising a support box, a frying pot embedded in the center of the support box, an oil draining mechanism inside the frying pot, a sealing cover above the oil draining mechanism, and an installation groove on the upper surface of the support box that mates with the sealing cover; a vacuuming structure is connected to the top of the sealing cover; and an oil outlet is provided on the outer wall of the support box, which is connected to the frying pot.

[0006] Furthermore, the oil-draining mechanism includes an oil-draining basket, with an outer ring at the upper part of the outer perimeter of the oil-draining basket. Several hinge blocks are symmetrically arranged at the bottom of the outer ring, and a telescopic mechanism is hinged to the lower part of each hinge block. The telescopic mechanism is symmetrically arranged on the upper end face of the support box. A guide plate is provided on one side of the upper end face of the outer ring, and a hook is provided on the other side. A stirring device is provided inside the oil-draining basket, and a lower support is provided on the upper end face of the support box to support the rotation of the stirring shaft of the stirring device. An upper support that cooperates with the lower support is provided at the lower end of the sealing cover.

[0007] Furthermore, the telescopic mechanism is located near the center of the mounting slot.

[0008] Furthermore, the number of hinge blocks is at least four, and they are circumferentially distributed on the outer ring.

[0009] Furthermore, the stirring shaft of the stirring device passes through the sealing cover and is connected to a sprocket. The sprocket is connected to a drive sprocket via a detachable chain. The drive sprocket is connected to a motor via a transmission shaft. Protective covers are provided on the outside of the drive sprocket, the transmission shaft, and the motor.

[0010] Furthermore, the upper surface of the oil drain basket is symmetrically provided with bearing assemblies that support the rotation of the stirring shaft of the stirring device.

[0011] Furthermore, the bottom of the fryer is equipped with an electric heating device.

[0012] Furthermore, the sealing cover includes a support body, one side of the upper end of the support body is hinged to the cover body via a hinge assembly, and the other end is connected to the cover body via a connecting assembly; the cover body is symmetrically provided with handles, and the cover body has a vacuum port for connecting the vacuum structure; an observation window is provided at the center of the cover body.

[0013] Furthermore, the height of the support body is higher than that of the guide plate.

[0014] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0015] This utility model of a low-temperature vacuum frying device for crispy winter jujubes involves placing fresh winter jujubes in an oil-draining basket, then sealing it with a lid and vacuum-sealing it before low-temperature vacuum frying. During the frying process, a stirring device is activated to ensure even heating of the crispy winter jujubes, improving frying efficiency and quality. In summary, this utility model of a low-temperature vacuum frying device for crispy winter jujubes is simple to operate, has high frying efficiency, and produces crispy winter jujubes with good taste and high nutritional value. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is an exploded view of the low-temperature vacuum frying device for crispy winter jujubes according to this utility model;

[0018] Figure 2 This is a schematic diagram of the low-temperature vacuum frying device for crispy winter dates according to this utility model;

[0019] Figure 3 This is a schematic diagram of the oil draining mechanism;

[0020] Figure 4 This is a side view of the oil draining mechanism;

[0021] Explanation of reference numerals in the attached drawings: 1. Support box; 2. Fryer; 3. Electric heating device; 4. Mounting groove; 5. Telescopic mechanism; 6. Oil draining mechanism; 7. Sealing cover; 8. Lower support; 9. Upper support; 10. Protective cover; 11. Motor; 12. Oil outlet;

[0022] 601. Oil drain basket; 602. Outer ring; 603. Hinge block; 604. Hook ring; 605. Guide plate; 606. Mixing device; 607. Bearing assembly; 608. Sprocket;

[0023] 701. Support body; 702. Cover body; 703. Connecting component; 704. Handle; 705. Observation window; 706. Vacuum port. Detailed Implementation

[0024] like Figure 1-4 As shown, a low-temperature vacuum frying device for crispy winter jujubes includes a support box 1. A frying pan 2 is embedded in the center of the support box 1. An oil draining mechanism 6 is installed inside the frying pan 2. A sealing cover 7 is installed above the oil draining mechanism 6. An installation groove 4, which mates with the sealing cover 7, is provided on the upper surface of the support box 1. A sealing strip is installed in the installation groove 4 to provide a seal and ensure a vacuum environment. A vacuum pumping structure, such as a vacuum pump, is connected to the top of the sealing cover 7. An oil outlet 12 is installed on the outer wall of the support box 1, which is connected to the frying pan 2. When oil needs to be changed, the valve on the oil outlet 12 is opened to automatically drain the oil, saving manpower and resources.

[0025] The oil-draining mechanism 6 includes an oil-draining basket 601. An outer ring 602 is installed on the upper part of the outer circumference of the oil-draining basket 601. Several hinge blocks 603 are symmetrically installed on the bottom of the outer ring 602. A telescopic mechanism 5 is hinged to the lower part of the hinge blocks 603. The telescopic mechanism 5 is symmetrically installed on the upper surface of the support box 1. The telescopic mechanism 5 is located near the center of the mounting groove 4 and does not interfere with the sealing of the sealing cover 7. There are at least four hinge blocks 603, which are circumferentially distributed on the outer ring 602. The telescopic mechanism 5 drives the outer ring 602 to move upward, supporting the oil-draining basket 601 to achieve initial oil drainage and avoid oil waste and burns to personnel.

[0026] A guide plate 605 is installed on one side of the upper end face of the outer ring 602, and a hook 604 is installed on the other side. The guide plate 605 works in conjunction with the hook 601. When the restriction of the hinge block 603 on the side of the hook 604 is released, the hook 604 is hooked up and flipped upward by external intervention, and the guide plate 605 changes from a vertical state to a horizontal arrangement. The food in the drain basket 601 is discharged along the guide plate 605. A stirring device 606 is installed in the drain basket 601. During the frying process, the stirring device 606 stirs the food, making the food roll over and heat evenly, thus improving the frying effect. A lower support 8 is installed on the upper end face of the support box 1 to support the rotation of the stirring shaft of the stirring device 606. An upper support 9 that cooperates with the lower support 8 is installed at the lower end of the sealing cover 7. The upper and lower supports do not hinder the start of the stirring device 606 and also play a sealing role to prevent the vacuuming operation from being hindered. In this embodiment, the specific positions of the upper and lower supports 9 are determined by the drive device that drives the stirring device 606 to rotate. Alternatively, upper and lower supports can be symmetrically arranged on both sides. When upper and lower supports are provided on both sides, the side that is not in use needs to be sealed. In addition, the upper and lower supports in this application are provided with threaded holes for fixing the sealing cap 7 to the support box 1.

[0027] The stirring shaft of the stirring device 606 passes through the sealing cover 7 and is connected to a sprocket 608. The sprocket 608 is connected to a drive sprocket via a detachable chain. The drive sprocket is connected to a motor 11 via a transmission shaft. A protective cover 10 is installed on the outside of the drive sprocket, the transmission shaft, and the motor 11. Bearing assemblies 607 supporting the rotation of the stirring shaft of the stirring device 606 are symmetrically installed on the upper surface of the oil drain basket 601. After the stirring device 606 is in a suitable position, the sprocket 608 and the drive sprocket are connected together by the chain. Then, the motor 11 is started, and the sprocket 608 is rotated through the transmission shaft, thereby rotating the stirring device 606.

[0028] The bottom of the fryer 2 is equipped with an electric heating device 3 for heating the oil inside the fryer 2.

[0029] The sealing cover 7 includes a support body 701. The upper end of the support body 701 is hinged to the cover body 702 via a hinge assembly on one side, and the other end is connected to the cover body 702 via a connecting assembly 703, meaning the cover body 702 can be opened. Handles 704 are symmetrically installed on the cover body 702. The handles 704 can be used not only to open the cover body 702 but also to lift the entire sealing cover 7 structure. A vacuum port 706 for connecting to the vacuum structure is provided on the cover body 702, and an observation window 705 is installed at the center of the cover body 702 for easy observation of the frying process.

[0030] The height of the support 701 is higher than that of the guide plate 605.

[0031] The operation process of this utility model is as follows:

[0032] First, cooking oil is placed in the fryer 2. Then, the drain basket 601 is placed inside the fryer 2, and the hinge block 603 on the lower end of the outer ring 602 of the drain basket 601 is hinged to the telescopic end of the telescopic mechanism 5 via a hinge shaft. Next, fresh crisp winter dates are placed inside the drain basket 601. Then, the sealing cover 7 is placed in the mounting groove 4, and the stirring shaft of the stirring device 606 is placed on the lower support 8 and the upper support 9, and the upper and lower supports are installed together to fix the sealing cover 7. The sprocket 608 on the stirring shaft is connected to the drive sprocket via a chain. Then, the vacuum structure is connected to the vacuum port 706 to perform a vacuum operation on the sealed cavity inside the fryer 2. Finally, the electric heating device 3 is started to heat the oil to a suitable temperature, and the motor 11 is started. Under the action of the transmission shaft, the sprocket rotates, which in turn drives the sprocket 608 to rotate via the chain, thereby rotating the stirring device 606 and causing the drain basket 601 to rotate. The crispy jujubes in 01 are stirred until they tumble and roll, ensuring even heating. At this time, the water in the crispy jujubes boils rapidly into steam under vacuum and low temperature, forming a large number of tiny bubbles inside the crispy jujubes. As the water evaporates, these bubbles gradually expand and eventually burst, forming a porous structure inside the crispy jujubes. This porous structure not only gives the food a crispy texture but also enhances its flavor. Finally, after frying, the sealing cover 7 is lifted to one side by hooking the handle 704 with the lifting device, exposing the oil draining mechanism 6. The chain pulls the sprocket 608, the telescopic mechanism 5 is activated, the oil draining basket 601 is lifted, and it is left to stand for a period of time for initial oil draining. Then, the connection between the two hinge blocks 603 located on one side of the hook ring 604 is released. By hooking the hook ring 604, the oil draining basket 601 rotates around the guide plate 605, and the crispy jujubes in the oil draining basket 601 are discharged from the guide plate 605.

[0033] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A low-temperature vacuum frying device for crispy winter dates, characterized in that: The device includes a support box (1), in which a deep fryer (2) is embedded at its center. The deep fryer (2) has an oil draining mechanism (6) inside, and a sealing cover (7) is provided above the oil draining mechanism (6). The upper surface of the support box (1) has an installation groove (4) that matches the sealing cover (7). The top of the sealing cover (7) is connected to a vacuum structure. An oil outlet (12) is provided on the outer wall of the support box (1), and the oil outlet (12) is connected to the deep fryer (2).

2. The low-temperature vacuum frying device for crispy winter dates according to claim 1, characterized in that: The oil draining mechanism (6) includes an oil draining basket (601), an outer ring (602) is provided on the upper part of the outer periphery of the oil draining basket (601), a plurality of hinge blocks (603) are symmetrically arranged at the bottom of the outer ring (602), and a telescopic mechanism (5) is hinged to the lower part of the hinge block (603). The telescopic mechanism (5) is symmetrically arranged on the upper end face of the support box (1). A guide plate (605) is provided on one side of the upper end face of the outer ring (602), and a hook (604) is provided on the other side. A stirring device (606) is provided inside the oil draining basket (601), and a lower support (8) is provided on the upper end face of the support box (1) to support the rotation of the stirring shaft of the stirring device (606). An upper support (9) that cooperates with the lower support (8) is provided at the lower end of the sealing cover (7).

3. The low-temperature vacuum frying device for crispy winter dates according to claim 2, characterized in that: The telescopic mechanism (5) is located near the center of the mounting slot (4).

4. The low-temperature vacuum frying device for crispy winter dates according to claim 2, characterized in that: The number of hinge blocks (603) is at least four, and they are circumferentially distributed on the outer ring (602).

5. The low-temperature vacuum frying device for crispy winter dates according to claim 2, characterized in that: The stirring shaft of the stirring device (606) passes through the sealing cover (7) and is connected to the sprocket (608). The sprocket (608) is connected to the drive sprocket by a detachable chain. The drive sprocket is connected to the motor (11) by a transmission shaft. The drive sprocket, the transmission shaft and the motor (11) are provided with a protective cover (10).

6. The low-temperature vacuum frying device for crispy winter dates according to claim 2, characterized in that: The oil drain basket (601) is symmetrically provided with bearing assemblies (607) that support the rotation of the stirring shaft of the stirring device (606).

7. The low-temperature vacuum frying device for crispy winter dates according to claim 1, characterized in that: The bottom of the fryer (2) is equipped with an electric heating device (3).

8. The low-temperature vacuum frying device for crispy winter dates according to claim 1, characterized in that: The sealing cover (7) includes a support body (701), one side of the upper end of the support body (701) is hinged to the cover body (702) by a hinge assembly, and the other end is connected to the cover body (702) by a connecting assembly (703); the cover body (702) is symmetrically provided with handles (704), and the cover body (702) is provided with a vacuum port (706) for connecting the vacuum structure; an observation window (705) is provided at the center of the cover body (702).

9. The low-temperature vacuum frying device for crispy winter dates according to claim 8, characterized in that: The height of the support (701) is higher than that of the guide plate (605).

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