A plum hot air circulating drying oven
By designing a plum hot air circulating drying box, using a ring-shaped air duct and a multi-layer disc rack, the problems of uneven plum drying and cumbersome operation were solved, achieving uniform drying of plums and convenient operation, thus improving product quality and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Filing Date
- 2025-08-21
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional plum drying methods are greatly affected by the weather, resulting in uneven drying, complicated operations, and inconsistent plum quality due to uneven hot air distribution, making them inconvenient to handle.
A plum hot air circulating drying oven is designed, which adopts a ring-shaped air duct and a multi-layer disc placement rack, combined with thermally conductive and heat-insulating materials, to achieve uniform hot air circulation and convenient operation.
This method achieves consistent plum drying and ease of operation, improves product quality and drying efficiency, and overcomes the shortcomings of traditional drying methods.
Smart Images
Figure CN224504633U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plum drying technology, specifically a plum hot air circulating drying box. Background Technology
[0002] As a popular fruit, plums occupy an important position in the food processing industry, often being made into various products such as candied fruit, dried fruit, and plum wine. In the plum processing procedure, the drying process is crucial, directly affecting the product's quality, taste, and shelf life.
[0003] Traditional drying methods mainly include natural sun-drying and simple hot air drying equipment. Natural sun-drying relies on sunlight and air circulation to remove moisture, but it is greatly affected by the weather and has a long drying cycle, consuming a lot of time and manpower. In addition, it is easily contaminated by dust and pests during the process, affecting hygiene and quality, and easily leading to inconsistent quality of dried plums, making it difficult to meet the market's demand for high-quality products.
[0004] While simple hot air drying equipment overcomes some of the effects of weather, it often uses a square box-type hot air circulation system, resulting in uneven temperature distribution on the left and right sides of the hot air, leading to significant differences in the degree of drying of the plums. Furthermore, the plums are placed in multiple drying trays within the equipment, making it extremely inconvenient to handle them one by one.
[0005] Therefore, a plum hot air circulating drying oven is proposed. Utility Model Content
[0006] (a) Technical problems to be solved
[0007] To address the shortcomings of existing technologies, this utility model provides a plum hot air circulating drying oven, which has the advantages of uniform drying and convenient handling. It solves the problems of traditional drying methods being greatly affected by weather, uneven drying, and inconvenience in handling plums, as well as the uneven distribution of hot air and cumbersome handling operations of simple hot air drying equipment.
[0008] (II) Technical Solution
[0009] To achieve the aforementioned goals of uniform drying and easy handling, this utility model provides the following technical solution:
[0010] A plum hot air circulating drying box includes a circular shell and a lid with a sealing cover on the upper end of the shell. The shell contains an inner cylinder, an outer cylinder, a rack, a heating element, a blower, and a dryer.
[0011] The outer cylinder is sleeved on the outside of the inner cylinder, the heating element is installed between the outer cylinder and the shell, and the placement rack is installed inside the inner cylinder;
[0012] The outer cylinder and the inner cylinder are spaced apart and form an annular air duct;
[0013] The blower is installed at the bottom of the inner cylinder and located inside the outer cylinder chamber; the dryer is an annular structure and located at the bottom of the annular air duct for separating gas and liquid.
[0014] The inner cylinder includes a cylinder body and an air column integrally formed at the lower end, and multiple air holes one and two are respectively opened on the air column and the cylinder body.
[0015] The preferred technical solution of this utility model is that the placement frame includes multiple layers of discs with equal vertical spacing and multiple connecting ribs that are fixedly connected to the multiple layers of discs. All connecting ribs have an end block welded to their upper ends. The discs are sleeved on the wind column through the connecting ribs, and the edges of the discs are provided with rolled edges.
[0016] A preferred embodiment of this utility model is that the upper end of the shell is provided with a flange of an annular structure, and the bottom of the flange is welded and fixed to the shell, the cylinder body, and the upper end of the outer cylinder.
[0017] The preferred technical solution of this utility model is that the dryer includes an annular air inlet communicating with the annular air duct and several air outlets and liquid outlets. The liquid outlets penetrate the outer cylinder and the shell and communicate with the outside. The air outlets are connected to the chamber between the inner cylinder and the outer cylinder where the blower is located.
[0018] The preferred technical solution of this utility model is that the shell is made of a material with strong heat insulation, and both the outer cylinder and the inner cylinder are made of a material with strong thermal conductivity.
[0019] The preferred technical solution of this utility model is that the heating element adopts a sheet-like structure and is laid and installed between the shell and the outer cylinder and located on the upper side of the dryer.
[0020] The preferred technical solution of this utility model is that a handle is installed at the upper end of the cover and a support foot is provided at the bottom of the housing.
[0021] (III) Beneficial Effects
[0022] Compared with the prior art, this utility model provides a plum hot air circulating drying oven, which has the following beneficial effects:
[0023] This plum hot air circulating drying oven, by setting up an annular air duct and opening multiple air holes in the air column and cylinder, allows hot air to circulate evenly in the inner cylinder, effectively solving the problem of uneven hot air distribution in traditional drying methods and simple hot air drying equipment, making the plums drier and improving product quality.
[0024] This plum hot air circulating drying oven uses multiple layers of equally spaced discs as a rack, with the discs connected to the air column by ribs. This allows for easy handling and placement of plums at once, overcoming the inconvenience of operating each drying disc individually in traditional equipment and improving the efficiency and convenience of the drying operation. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the appearance and structure of this utility model;
[0026] Figure 2 This is an exploded view of the overall structure of this utility model;
[0027] Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle;
[0028] Figure 4 This is a top three-dimensional view of the inner and outer cylindrical parts in this utility model;
[0029] Figure 5 This is a bottom-view three-dimensional view of the inner and outer cylindrical parts in this utility model;
[0030] Figure 6 This is a cross-sectional view of the overall structure of this utility model;
[0031] Figure 7 for Figure 6 Enlarged schematic diagram of the structure at point B;
[0032] Figure 8 for Figure 6 Enlarged schematic diagram of the structure at point C.
[0033] In the diagram: 1. Shell; 101. Support foot; 2. Cover; 201. Handle; 3. Inner cylinder; 301. Cylinder body; 302. Air column; 303. Air vent one; 304. Air vent two; 4. Outer cylinder; 5. Placement rack; 501. Disc; 502. Connecting rib; 503. End block; 504. Rolled edge; 6. Heating element; 7. Flange; 8. Air blower; 9. Dryer; 901. Air inlet; 902. Air outlet; 903. Drain outlet. Detailed Implementation
[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0035] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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.
[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0037] Please see Figure 1-8 A plum hot air circulating drying box includes a circular shell 1 and a cover 2 with a sealing cover on the upper end of the shell 1. The shell 1 is provided with an inner cylinder 3, an outer cylinder 4, a rack 5, a heating element 6, a blower 8 and a dryer 9.
[0038] The outer cylinder 4 is fitted on the outside of the inner cylinder 3, the heating element 6 is installed between the outer cylinder 4 and the shell 1, and the placement rack 5 is installed inside the inner cylinder 3;
[0039] The outer cylinder 4 and the inner cylinder 3 are spaced apart and form an annular air duct;
[0040] The blower 8 is installed at the bottom of the inner cylinder 3 and located inside the outer cylinder 4. The dryer 9 is a ring structure and located at the bottom of the ring air duct for separating gas and liquid.
[0041] The inner cylinder 3 includes a cylinder body 301 integrally formed at the lower end and an air column 302. Multiple air holes 303 and air holes 304 are respectively opened on the air column 302 and the cylinder body 301.
[0042] It should be noted that the dryer 9 used is a device based on traditional hot air drying technology. It generally contains an air inlet 901, an air outlet 902, and a liquid outlet 903, which are used to filter and separate humid hot air into dry air and liquid. This is a common technology in this field, so it will not be described in detail.
[0043] In this embodiment, the placement rack 5 includes multiple layers of equally spaced discs 501 and multiple connecting ribs 502 that are fixedly connected to the multiple layers of discs 501. All connecting ribs 502 have end blocks 503 welded to their upper ends. The discs 501 are fitted onto the air column 302 via the connecting ribs 502, and the edges of the discs 501 are provided with rolled edges 504. The design of multiple layers of equally spaced discs 501 allows for reasonable allocation of placement space according to the quantity of plums and drying requirements, making full use of the internal volume of the inner cylinder 3. The connecting ribs 502 serve to firmly connect the layers of discs 501, ensuring the stability of the overall structure of the placement rack 5 and preventing it from shaking due to hot air flow or equipment vibration during the drying process. The air column 302 not only provides support for the placement rack 5 but may also participate in the delivery or guidance of hot air, allowing the hot air to better act on the plums placed on the discs 501. The rolled edge 504 on the edge of the disc 501 serves two purposes: firstly, it prevents the plums from rolling off the edge of the disc 501 during placement or drying, thus providing some protection; secondly, the rolled edge 504 design also reduces the risk of the edge of the disc 501 scratching the operator's hands, improving safety during use.
[0044] In this embodiment, an annular flange 7 is also provided at the upper end of the shell 1. The bottom of the flange 7 is welded and fixed to the shell 1, the cylinder 301, and the upper end of the outer cylinder 4. The annular flange 7 can enhance the connection strength and sealing between the shell 1, the cylinder 301, and the outer cylinder 4. During the drying process, a certain pressure and temperature environment will be formed inside the equipment. By welding and fixing the various components through the flange 7, hot air and moisture leakage can be effectively prevented, ensuring a stable drying environment inside the drying chamber. At the same time, this connection method also makes the overall structure of the equipment more robust, able to withstand certain external impacts and long-term wear, extending the service life of the equipment.
[0045] In this embodiment, the dryer 9 includes an annular air inlet 901 communicating with the annular air duct, several air outlets 902, and a liquid drain 903. The liquid drain 903 penetrates the outer cylinder 4 and the shell 1 and communicates with the outside. The air outlets 902 are connected to the chamber between the inner cylinder 3 and the outer cylinder 4, where the blower 8 is located. The annular air inlet 901 communicates with the annular air duct, allowing hot air containing moisture from the annular air duct to smoothly enter the dryer 9 for gas-liquid separation. The design of several air outlets 902 ensures that the separated dry hot air can uniformly re-enter the chamber between the inner cylinder 3 and the outer cylinder 4, and then be recirculated back into the inner cylinder 3 by the blower 8 to dry the plums, improving the circulation efficiency and drying effect of the hot air. The liquid drain 903 penetrates the outer cylinder 4 and the shell 1 and communicates with the outside, allowing the liquid separated by the dryer 9 to be discharged to the outside of the equipment in a timely manner, preventing liquid from accumulating inside the equipment and affecting the drying effect and normal operation of the equipment.
[0046] In this embodiment, the shell 1 is made of a material with strong thermal insulation properties, while the outer cylinder 4 and inner cylinder 3 are both made of materials with strong thermal conductivity. The use of a material with strong thermal insulation in the shell 1 effectively reduces heat loss from the equipment, lowers energy consumption, and improves energy efficiency. Maintaining a stable internal temperature is crucial for the uniform drying of the plums during the drying process, and the insulation material provides a relatively stable temperature environment. The use of materials with strong thermal conductivity in the outer cylinder 4 and inner cylinder 3 allows for rapid heat transfer from the heating element 6 to the inner cylinder 3, enabling the hot air to heat up quickly and increasing the drying speed. Simultaneously, the strong thermal conductivity also ensures the uniformity of the internal temperature of the inner cylinder 3, preventing localized overheating or underheating, thus ensuring consistent drying of the plums.
[0047] In this embodiment, the heating element 6 is installed in a sheet-like structure between the shell 1 and the outer cylinder 4, located on the upper side of the dryer 9. The sheet-like structure of the heating element 6 provides a larger heating area, enabling more uniform heat transfer to the outer cylinder 4, which in turn conducts the heat to the interior of the inner cylinder 3. This installation method expands the heating range, resulting in a more uniform temperature throughout the drying chamber. Installing the heating element 6 on the upper side of the dryer 9 facilitates the circulation of hot air, allowing the heated air to smoothly enter the annular air duct and the interior of the inner cylinder 3.
[0048] In this embodiment, a handle 201 is installed on the upper end of the lid 2, and a support foot 101 is provided on the bottom of the housing 1. The handle 201 on the upper end of the lid 2 facilitates the operator in opening and closing the lid 2. When placing or removing plums, the operator can easily lift or close the lid 2 by holding the handle 201, improving the convenience of operation. The support foot 101 at the bottom of the housing 1 can raise the drying chamber to a certain height, creating a certain space between the bottom of the equipment and the ground.
[0049] In summary, this plum hot air circulating drying oven, by setting up an annular air duct and opening multiple air holes on the air column 302 and the cylinder 301, enables hot air to circulate evenly within the inner cylinder 3, effectively solving the problem of uneven hot air distribution in traditional drying methods and simple hot air drying equipment, resulting in more consistent drying of plums and improved product quality.
[0050] This plum hot air circulating drying oven uses multiple layers of equally spaced discs 501 as a placement rack 5, and the discs 501 are fitted onto the air column 302 by connecting ribs 502, which makes it convenient to pick up or place plums at once. This overcomes the inconvenience of operating the drying discs one by one in traditional equipment and improves the efficiency and convenience of the drying operation.
[0051] Working principle: When the equipment is turned on, the power is first connected, and the heating element 6 is immediately activated, which efficiently transfers heat to the outer cylinder 4, causing the air temperature in the annular air duct to rise.
[0052] The blower 8 starts operating, blowing air from the chamber between the inner cylinder 3 and the outer cylinder 4 into the air column 302. The air then enters the cylinder body 301 through the air hole 303 on the air column 302, and is evenly blown onto the plums placed on the rack 5, promoting the evaporation of moisture from the plums' surface. Subsequently, the hot air carrying the evaporated moisture from the plums enters the annular air duct between the outer cylinder 4 and the inner cylinder 3 through the air hole 304 on the cylinder body 301, and flows to the annular dryer 9 located at the bottom of the annular air duct.
[0053] In the dryer 9, hot air undergoes gas-liquid separation. The separated dry hot air returns to the chamber between the inner cylinder 3 and the outer cylinder 4 through the air outlet 902, and is circulated again by the blower 8 to continuously dry the plums; while the separated liquid is discharged from the equipment through the drain outlet 903.
[0054] Operators can easily open and close the lid 2 using the handle 201 on the lid 2, and use the multi-layer rack 5 to take out or place plums at once, making the operation convenient and efficient. In addition, the heat insulation material used in the shell 1 can effectively reduce heat loss, while the support feet 101 ensure that the equipment is placed stably and well-ventilated, together ensuring that the plums are dried efficiently and evenly.
[0055] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A plum hot air circulating drying oven, comprising a circular shell and a lid with a sealing cover located at the upper end of the shell, characterized in that: The housing is internally equipped with an inner cylinder, an outer cylinder, a shelf, a heating element, a blower, and a dryer; The outer cylinder is sleeved on the outside of the inner cylinder, the heating element is installed between the outer cylinder and the shell, and the placement rack is installed inside the inner cylinder; The outer cylinder and the inner cylinder are spaced apart and form an annular air duct; The blower is installed at the bottom of the inner cylinder and located inside the outer cylinder chamber; the dryer is an annular structure and located at the bottom of the annular air duct for separating gas and liquid. The inner cylinder includes a cylinder body and an air column integrally formed at the lower end, and multiple air holes one and two are respectively opened on the air column and the cylinder body.
2. The plum hot air circulating drying oven according to claim 1, characterized in that: The placement rack includes multiple layers of discs with equal vertical spacing and multiple connecting ribs that are fixedly connected to the multiple layers of discs. All connecting ribs have an end block welded to their upper ends. The discs are fitted onto the wind column through the connecting ribs, and the edges of the discs are rolled.
3. The plum hot air circulating drying oven according to claim 1, characterized in that: The upper end of the shell is also provided with a flange with an annular structure, and the bottom of the flange is welded and fixed to the shell, the cylinder body, and the upper end of the outer cylinder.
4. The plum hot air circulating drying oven according to claim 1, characterized in that: The dryer includes an annular air inlet communicating with an annular air duct, as well as several air outlets and liquid drains. The liquid drains penetrate the outer cylinder and the shell and communicate with the outside. The air outlets are connected to the chamber between the inner cylinder and the outer cylinder where the blower is located.
5. A plum hot air circulating drying oven according to claim 1, characterized in that: The shell is made of a material with strong thermal insulation properties, and both the outer and inner cylinders are made of a material with strong thermal conductivity.
6. The plum hot air circulating drying oven according to claim 1, characterized in that: The heating element is a sheet-like structure laid between the shell and the outer cylinder and located on the upper side of the dryer.
7. A plum hot air circulating drying oven according to claim 1, characterized in that: The cover is equipped with a handle at the top and the housing is provided with support feet at the bottom.