Cooling and fresh-keeping device for zongzi production
By using a double-layer hollow rotating cylinder and a three-dimensional air supply system, the problem of uneven cooling in traditional zongzi cooling equipment has been solved, achieving a highly efficient and uniform cooling effect and ensuring food safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 成都五芳斋食品有限公司
- Filing Date
- 2025-06-04
- Publication Date
- 2026-05-26
AI Technical Summary
Traditional zongzi cooling equipment has low cooling efficiency, large temperature difference between the inside and outside, uneven cooling in the center, and single airflow in rotating cooling equipment. Neglecting bearing ventilation design leads to poor overall cooling uniformity.
It adopts a double-layer hollow rotating cylinder design, combined with a three-dimensional air supply system that combines direct blowing from the central through hole and side blowing from the circumferential nozzles. With the through-ventilation design of the hollow bearing structure, the rotating cylinder is driven by the drive component to achieve a coordinated circulation of cold air that diffuses from the center outward and penetrates horizontally from the side.
It significantly improves the uniformity of cooling inside and outside the rice dumpling, shortens the cooling time, and ensures food hygiene and safety.
Smart Images

Figure CN224285115U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of food preservation technology, specifically to a cooling and preservation device for the production of zongzi (sticky rice dumplings). Background Technology
[0002] After being hand-wrapped, zongzi are steamed. To preserve their freshness, they are cooled and then placed in a freezer.
[0003] Traditional methods of cooling zongzi (sticky rice dumplings) mainly involve static spreading or direct fan blowing, which has problems such as low cooling efficiency and large temperature differences between the inside and outside. Ordinary air cooling cannot penetrate the stacked layers of zongzi, resulting in uneven cooling in the center. Existing rotary cooling equipment has a single air path and cannot achieve three-dimensional circulation. In addition, conventional equipment often neglects the ventilation design of the bearing area, which leads to airflow obstruction inside the rotating drum and affects the overall cooling uniformity.
[0004] Therefore, a cooling and preservation device for zongzi production is proposed. Utility Model Content
[0005] To address the problems existing in the prior art, this utility model provides a cooling and preservation device for zongzi (sticky rice dumpling) production.
[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:
[0007] A cooling and preservation device for zongzi (sticky rice dumpling) production, comprising:
[0008] Support frame;
[0009] The mounting base, which is mounted on the support frame, is rotated by a rotating seat and is driven to rotate by a driving component.
[0010] The rotating cylinder includes an inner cylinder and an outer cylinder arranged coaxially. Both the inner cylinder and the outer cylinder have hollow structures, and a sandwich space is formed between them to accommodate zongzi (sticky rice dumplings).
[0011] A blower component is used to cool and preserve the rice dumplings.
[0012] The controller is electrically connected to the drive component and the blowing component.
[0013] Furthermore, the driving component includes a motor and a first gear and a second gear that mesh with each other, the second gear being sleeved on a rotating base, and the first gear being connected to the main shaft end of the motor.
[0014] Furthermore, the mounting base is provided with at least two limiting slots circumferentially, and the outer side of the rotating cylinder is provided with a connecting plate that is compatible with the limiting slots.
[0015] Furthermore, the blowing component includes a collecting plate, a blower, and a blowing plate. The collecting plate is disposed at the bottom end of the support frame, the output end of the blower extends into the interior of the collecting plate, and the blowing plates are circumferentially distributed around the center of the rotating cylinder, with at least two of them.
[0016] Furthermore, a through hole is provided in the middle of the collecting plate, which leads to the central axis area of the rotating drum and is used to blow cold air into the middle of the inner drum.
[0017] Furthermore, the blowing plate is provided with multiple nozzles facing the rotating cylinder for blowing cold air from the side, and the blowing plate and the collecting plate are connected by a support pipe.
[0018] The beneficial effects of this utility model are as follows:
[0019] This invention uses a driving component to rotate a double-layer hollowed-out rotating cylinder, combined with a two-way three-dimensional air supply system formed by direct blowing through the central shaft and side blowing from the circumferential nozzles. With the through-ventilation design of the hollow bearing structure, it effectively solves the problems of low efficiency of traditional static cooling and single airflow of rotating equipment. It realizes the coordinated circulation of cold air spreading outward from the center of the rotating cylinder and horizontally penetrating from the side. This not only significantly improves the uniformity of cooling inside and outside the rice dumpling and avoids heat accumulation in the center caused by stacking, but also greatly shortens the cooling time while ensuring food hygiene and safety. Attached Figure Description
[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0021] Figure 2 This is a sectional view of the present invention;
[0022] Figure 3 This is a schematic diagram of the mounting base structure of this utility model;
[0023] Figure 4 This is a schematic diagram of the rotating drum structure of this utility model.
[0024] Reference numerals in the attached drawings: 1. Support frame; 2. Controller; 3. Rotating seat; 4. Rotating drum; 401. Connecting plate; 5. Drive component; 501. Motor; 502. First gear; 503. Second gear; 6. Blowing component; 601. Collecting plate; 602. Blower; 603. Blowing plate; 604. Nozzle; 7. Mounting base; 701. Limiting slot. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0027] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0028] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0029] like Figure 1-4As shown, a cooling and preservation device for zongzi (sticky rice dumplings) production includes: a support frame 1; a mounting seat 7 rotatably mounted on the support frame 1 via a rotating base 3, the mounting seat 7 being driven to rotate by a driving component 5; the rotating base 3 is a structure with bearings, and the mounting seat 7 is connected to the support frame 1 via the bearings to ensure smooth rotation; the rotating base 3 is hollow, so air can be directly transmitted to the rotating cylinder 4 through the rotating base 3; the rotating cylinder 4 includes an inner cylinder and an outer cylinder arranged coaxially, both of which are hollow structures, forming a sandwich space for accommodating zongzi. This structural design of the rotating cylinder 4 allows for the circulation of cold air through the hollow inner and outer cylinders, and the sandwich space is used to place the zongzi, allowing the zongzi to be fully exposed to the cold air. In the middle, the cooling speed is accelerated, and the hollow structure also makes it easy to observe the state of the rice dumplings. The inner and outer cylinders can be made of food-grade materials such as stainless steel to ensure food safety. The size of the interlayer space is designed according to the size and quantity of the rice dumplings to ensure that there is enough space between the rice dumplings to avoid mutual compression, and also to ensure that the cold air can flow smoothly in the interlayer space. The blowing component 6 is used to cool and preserve the rice dumplings. The controller 2 is electrically connected to the drive component 5 and the blowing component 6. Specifically, the blowing component 6 selects a blower 602 with appropriate power and air volume according to the number of rice dumplings to be cooled and the required cooling speed, and blows the cold air evenly to the rice dumplings in the rotating cylinder 4 through the collecting plate 601 and the blowing plate 603.
[0030] like Figure 2 As shown, the driving component 5 includes a motor 501 and a first gear 502 and a second gear 503 that mesh with each other. The second gear 503 is sleeved on the rotating seat 3, and the first gear 502 is connected to the main shaft end of the motor 501. Specifically, the motor 501 drives the first gear 502 to rotate, and the first gear 502 then drives the second gear 503 to rotate, thereby realizing the rotation of the mounting seat 7.
[0031] like Figure 3 and 4 As shown, the mounting base 7 is provided with at least two limiting slots 701 circumferentially, and the outer side of the rotating cylinder 4 is provided with a connecting plate 401 that is compatible with the limiting slots 701. Specifically, the rotating cylinder 4 is firmly installed on the mounting base 7 by the engagement of the limiting slots 701 and the connecting plate 401, ensuring that the rotating cylinder 4 will not shift or loosen during rotation. It also facilitates the installation and disassembly of the rotating cylinder 4, making it convenient for cleaning and maintenance. Since the zongzi has a certain weight, it can remain stable during rotation.
[0032] like Figure 2As shown, the blowing component 6 includes a collecting plate 601, a blower 602, and blowing plates 603. The collecting plate 601 is located at the bottom of the support frame 1, and the output end of the blower 602 extends into the interior of the collecting plate 601. The blowing plates 603 are circumferentially distributed around the center of the rotating cylinder 4, and at least two are provided. Specifically, the collecting plate 601 is used to collect the cold air blown out by the blower 602 and distribute it evenly to each blowing plate 603. The blowing plates 603 then blow the cold air from different directions onto the rice dumplings inside the rotating cylinder 4 to achieve all-round cooling and preservation. The air inlet of the blower 602 can be connected to an ozone generator or a sterile filter device to add a preservation medium to the cold air to ensure the sterile cooling of the rice dumplings.
[0033] like Figure 2 As shown, a through hole is provided in the middle of the collecting plate 601, which leads to the central axis area of the rotating cylinder 4 and is used to blow cold air into the middle of the inner cylinder. Specifically, by blowing cold air into the central axis area of the rotating cylinder 4, the cold air can flow from the inside of the rotating cylinder 4 to the outside, further enhancing the circulation effect of the cold air in the rotating cylinder 4, improving the cooling efficiency, and ensuring the temperature uniformity inside the rotating cylinder 4. The size and shape of the through hole should be designed according to the flow rate and velocity of the cold air to ensure that the cold air can smoothly enter the central axis area of the rotating cylinder 4 and form a good airflow circulation inside the rotating cylinder 4.
[0034] like Figure 2 As shown, the blowing plate 603 has multiple nozzles 604 facing the rotating drum 4, used to blow cold air from the side. The blowing plate 603 and the collecting plate 601 are connected by a support pipe. Specifically, the nozzles 604 can disperse the cold air into multiple fine airflows, blowing them evenly from the side onto the rice dumplings inside the rotating drum 4, allowing the rice dumplings to be cooled from multiple directions, further improving the cooling and preservation effect. The support pipe is used to connect the blowing plate 603 and the collecting plate 601 to ensure stable delivery of cold air. The shape and distribution of the nozzles 604 should be designed according to the size of the blowing plate 603 and the cooling requirements to achieve the best cold air distribution effect. The material of the support pipe should have good airtightness and strength to ensure the stability and safety of the cold air during delivery.
[0035] In summary: The motor 501 of the drive component 5 drives the rotating seat 3 to rotate through the meshing of the first gear 502 and the second gear 503, thereby causing the mounting seat 7 and the rotating cylinder 4 fixed thereon to rotate synchronously. The rotating cylinder 4 is composed of a coaxial hollow inner cylinder and an outer cylinder. The zongzi is placed in the space between the two. The blower 602 of the blower component 6 inputs cold air into the collecting plate 601. Part of the cold air blows directly into the central axis area of the rotating cylinder 4 through the central through hole to form an airflow from the inside to the outside. The other part is diverted through the support pipe to the circumferentially distributed blower plates 603. Cold air is evenly sprayed from the side through the multi-nozzle 604 to achieve all-round rapid cooling. The hollow design and hollow cylinder structure of the rotating seat 3 ensure smooth airflow. The controller 2 coordinates and regulates the speed and air volume to ultimately achieve efficient and uniform cooling and preservation.
[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A device for cooling and preserving zongzi production, characterized in that, include: Support frame (1); The mounting base (7) mounted on the support frame (1) is rotated by the rotating seat (3), and the mounting base (7) is driven to rotate by the driving member (5); Rotating cylinder (4), the rotating cylinder (4) includes an inner cylinder and an outer cylinder arranged coaxially, the inner cylinder and the outer cylinder are both hollow structures, and a sandwich space is formed between them to accommodate zongzi; The air blowing component (6) is used to cool and preserve the rice dumplings; The controller (2) is electrically connected to the drive component (5) and the blowing component (6).
2. The cooling and preservation device for zongzi production according to claim 1, characterized in that, The drive component (5) includes a motor (501) and a first gear (502) and a second gear (503) meshing with each other. The second gear (503) is sleeved on the rotating seat (3), and the first gear (502) is connected to the main shaft end of the motor (501).
3. The cooling and preservation device for zongzi production according to claim 1, characterized in that, The mounting base (7) is provided with at least two limiting slots (701) in the circumferential direction, and the outer side of the rotating cylinder (4) is provided with a connecting plate (401) that is compatible with the limiting slots (701).
4. The cooling and preservation device for zongzi production according to claim 1, characterized in that, The blowing component (6) includes a collecting plate (601), a blower (602) and a blowing plate (603). The collecting plate (601) is located at the bottom end of the support frame (1). The output end of the blower (602) extends into the interior of the collecting plate (601). The blowing plates (603) are circumferentially distributed around the center of the rotating cylinder (4), and at least two of them are provided.
5. A cooling and preservation device for zongzi production according to claim 4, characterized in that, The collecting plate (601) has a through hole in the middle, which leads to the central axis area of the rotating cylinder (4) and is used to blow cold air into the middle of the inner cylinder.
6. The cooling and preservation device for zongzi production according to claim 4, characterized in that, The blower plate (603) is provided with multiple nozzles (604) facing the rotating drum (4) for blowing cold air from the side. The blower plate (603) and the collecting plate (601) are connected by a support pipe.