Vacuum drying device special for freeze-dried strawberries
By using a heat exchange system of semiconductor cooling chip and metal heat-conducting plate and a positioning insert structure, the problems of poor heat dissipation and material displacement in the vacuum drying device for freeze-dried strawberries are solved, achieving efficient heat dissipation and reliable positioning.
Patent Information
- Application Number
- CN202520652522.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-09
- Publication Date
- 2026-03-03
- Estimated Expiration
- 2035-04-09
AI Technical Summary
Existing freeze-dried strawberry vacuum drying equipment has low heat dissipation efficiency, resulting in abnormally high internal temperature. At the same time, the lack of mechanical positioning structure causes the material to shift or slide out of the chamber during the vacuuming process.
The heat exchange system consists of a semiconductor cooling chip and a metal heat-conducting plate. Combined with a dual-fan driven airflow circulation structure, it forms a three-dimensional heat dissipation network. The automatic locking of the material placement platform is achieved through a mechanical interlocking structure of positioning pins and positioning holes, along with spring preload.
It significantly improves heat dissipation efficiency, ensures stable temperature during continuous operation, and prevents materials from shifting or sliding out during vacuuming, thus achieving reliable material fixation.
Smart Images
Figure CN223958293U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of food processing technology, and in particular to a vacuum drying device for freeze-dried strawberries. Background Technology
[0002] Freeze-dried strawberries are fruit products made using vacuum freeze-drying technology. The principle is to remove the water in strawberries by sublimation at low temperatures, thereby preserving their original nutrients and taste.
[0003] Vacuum drying equipment is the core equipment for this process. It reduces the ambient air pressure by drawing a vacuum, allowing moisture to vaporize directly at low temperatures, thus avoiding the destruction of nutrients by high temperatures.
[0004] The existing vacuum drying device for freeze-dried strawberries has the following shortcomings:
[0005] The low heat dissipation efficiency of the vacuum drying oven leads to an abnormal increase in internal temperature during continuous operation. At the same time, the lack of mechanical positioning structure on the material placement platform in the existing device causes the material to shift or even slide out of the chamber during the vacuuming process. Utility Model Content
[0006] This invention proposes a vacuum drying device for freeze-dried strawberries. It uses a heat exchange system composed of a semiconductor cooling chip and a metal heat-conducting plate, combined with a dual-fan driven airflow circulation structure to form a three-dimensional heat dissipation network. The device uses a mechanical interlocking structure of positioning pins and positioning holes, along with spring preload, to automatically lock the material placement platform, thereby solving the problems mentioned in the background art.
[0007] To achieve the above objectives, the present invention adopts the following technical solution: a vacuum drying device for freeze-dried strawberries, comprising a vacuum dryer, wherein a cabinet door is rotatably connected to the front middle of the vacuum dryer, a control panel is fixedly connected to the top of the front of the vacuum dryer, a heat dissipation rack is installed on the bottom right side of the vacuum dryer, and a drying chamber is opened in the front middle of the vacuum dryer, wherein several support brackets are arranged inside the drying chamber.
[0008] A heat sink is fixedly installed on the right side of the heat sink frame. Cooling slots are provided on the upper and lower sides of the left side of the heat sink frame. A heat dissipation slot is provided in the middle of the right side of the heat sink frame. Semiconductor cooling chips are fixedly connected to the middle of the upper and lower sides of the inner surface of the heat dissipation slot. The side of the semiconductor cooling chip away from the heat dissipation slot extends into the interior of the cooling slot. Several metal heat-conducting plates are fixedly connected to the front and rear sides of the inner surface of the heat dissipation slot. The upper and lower ends of the metal heat-conducting plates extend into the inner surfaces of the two cooling slots respectively.
[0009] Preferably, the heat sink is fixedly connected to the front and rear sides of the middle section with a dustproof net that runs through it from left to right, and the two dustproof nets are respectively set on the right side of the front and rear ends of the heat dissipation groove.
[0010] Preferably, a first motor is fixedly installed on both the front and rear sides of the inner wall of the heat dissipation tank, and a heat dissipation fan is fixedly connected to the output shaft of the first motor.
[0011] Preferably, a second motor is fixedly installed on both the front and rear sides of the inner wall of the cooling tank, and a guide fan is fixedly connected to the output shaft of the second motor.
[0012] Preferably, the support bracket includes two connecting frames, which are respectively fixedly connected to the left and right sides of the inner surface of the drying chamber. A material placement platform is slidably engaged with the opposite surfaces of the two connecting frames, and positioning brackets are fixedly connected to the left and right sides of the front of the material placement platform.
[0013] Preferably, a connecting groove is provided on the front side of each of the two connecting brackets facing each other, and a positioning insertion hole is provided at the front end of the inner wall of the connecting groove.
[0014] Preferably, an ejector spring is fixedly connected to the rear side of the inner wall of the connecting groove, and an ejector plate is fixedly connected to the front end of the ejector spring.
[0015] Preferably, the positioning bracket includes a connecting cylinder, which is fixedly connected to the front side of the material placement platform, and a positioning insert with a left-right through-hole is slidably connected to the middle of the connecting cylinder.
[0016] Preferably, the end of the positioning pin away from the connecting frame is fixedly connected to a pulling block, and the end of the positioning pin near the connecting frame extends into the interior of the positioning hole.
[0017] Preferably, a sliding pressure plate is fixedly connected to the middle of the outer surface of the positioning pin, the outer surface of the sliding pressure plate is slidably connected to the inner surface of the connecting cylinder, a tightening spring is fixedly connected to the side of the sliding pressure plate away from the connecting frame, and the end of the tightening spring away from the sliding pressure plate is fixedly connected to the inner wall of the connecting cylinder.
[0018] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:
[0019] 1. In this utility model, a heat exchange system composed of a semiconductor cooling chip and a metal heat-conducting plate, combined with a dual-fan driven airflow circulation structure, forms a three-dimensional heat dissipation network. The semiconductor cooling chip directionally conducts heat in the drying chamber to the metal heat-conducting plate, the exhaust fan accelerates the discharge of hot air, and the guide fan forms a circulating airflow in the cooling tank to quickly remove heat from the equipment. This heat dissipation structure significantly improves heat dissipation efficiency, ensures that the temperature of the drying chamber remains stable during continuous operation, and effectively solves the overheating problem caused by poor heat dissipation in traditional devices.
[0020] 2. In this utility model, the automatic locking of the material placement platform is achieved through the mechanical interlocking structure of the positioning pin and the positioning hole, combined with the spring preload. When the material placement platform is pushed into the chute, the positioning pin is engaged in the positioning hole under the action of the spring, forming a mechanical limit. The pull block can be manually unlocked, which is convenient for picking up and putting down materials. This structure can reliably fix the material placement platform without electronic components, ensuring that the material does not shift during the vacuuming process, and solving the problem of material slippage caused by the lack of mechanical positioning in traditional devices. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the structure of the vacuum drying device of this utility model;
[0022] Figure 2 This is a schematic diagram of the unfolded structure of the vacuum dryer of this utility model;
[0023] Figure 3 This is a schematic diagram of the structure of the heat dissipation box of this utility model;
[0024] Figure 4 This is a cross-sectional structural diagram of the heat dissipation box of this utility model;
[0025] Figure 5 This is a schematic diagram of the structure of the support bracket of this utility model;
[0026] Figure 6 This is a schematic diagram of the connecting frame of this utility model;
[0027] Figure 7 This is a cross-sectional structural diagram of the positioning bracket of this utility model.
[0028] Legend: 1. Vacuum dryer; 11. Drying chamber; 2. Cabinet door; 3. Control panel; 4. Heat sink; 41. Dustproof net; 42. Heat sink box; 43. Cooling tank; 44. Heat dissipation tank; 45. Semiconductor cooling chip; 46. Metal heat-conducting plate; 47. First motor; 48. Heat dissipation fan; 49. Second motor; 410. Guide fan; 5. Support bracket; 51. Connecting bracket; 511. Connecting slide; 512. Ejection spring; 513. Ejection plate; 514. Positioning hole; 52. Material placement platform; 53. Positioning bracket; 531. Connecting cylinder; 532. Positioning pin; 533. Pull block; 534. Sliding pressure plate; 535. Tightening spring. Detailed Implementation
[0029] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0030] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0031] Example 1: As Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this utility model provides a technical solution: a heat sink 42 is fixedly installed on the right side of the heat sink 4; cooling grooves 43 are provided on the upper and lower left sides of the heat sink 42; a heat dissipation groove 44 is provided in the middle of the right side of the heat sink 4; a semiconductor cooling chip 45 is fixedly connected to the middle of the upper and lower sides of the inner surface of the heat dissipation groove 44; the side of the semiconductor cooling chip 45 away from the heat dissipation groove 44 extends into the interior of the cooling groove 43; and several metal heat-conducting plates 46 are fixedly connected to the front and rear sides of the inner surface of the heat dissipation groove 44. The upper and lower ends of 46 extend to the inner surfaces of the two cooling slots 43 respectively. Dustproof nets 41 that extend through the middle of the heat sink 4 are fixedly connected to the front and rear sides. The two dustproof nets 41 are respectively set on the right side of the front and rear ends of the heat dissipation slot 44. The first motor 47 is fixedly installed on the front and rear sides of the inner wall of the heat dissipation slot 44. The output shaft of the first motor 47 is fixedly connected to the heat dissipation fan 48. The second motor 49 is fixedly installed on the front and rear sides of the inner wall of the cooling slot 43. The output shaft of the second motor 49 is fixedly connected to the guide fan 410.
[0032] The overall effect of Embodiment 1 is as follows: When the vacuum dryer 1 generates heat during operation, the semiconductor cooling chip 45 starts to work. Its cold end absorbs the heat in the heat dissipation tank 44, and its hot end conducts the heat to the cooling tank 43. The metal heat-conducting plate 46 further enhances the heat conduction efficiency, so that the heat can be quickly transferred from the cooling tank 43 to the heat dissipation tank 44. At the same time, the first motor 47 drives the heat dissipation fan 48 to rotate, quickly expelling the hot air in the heat dissipation tank 44 and accelerating the heat exchange process. The second motor 49 drives the guide fan 410 to rotate, forming a circulating airflow in the cooling tank 43 and dispersing the cooled air in the cooling tank 43 to the interior of the vacuum dryer 1. In this way, the heat dissipation efficiency of the vacuum dryer 1 is significantly improved, avoiding abnormal temperature rise inside the equipment due to poor heat dissipation and ensuring that the equipment can operate continuously and stably.
[0033] Example 2: As Figure 5 , Figure 6 and Figure 7 As shown, this utility model provides a technical solution: the support bracket 5 includes two connecting brackets 51, which are respectively fixedly connected to the left and right sides of the inner surface of the drying chamber 11. A material placement platform 52 is slidably engaged with the opposite surfaces of the two connecting brackets 51. Positioning brackets 53 are fixedly connected to the left and right sides of the front of the material placement platform 52. A connecting groove 511 is opened on the front side of the opposite front of the two connecting brackets 51. A positioning insertion hole 514 is opened at the front end of the inner wall of the connecting groove 511. An ejection spring 512 is fixedly connected to the rear side of the inner wall of the connecting groove 511. An ejection plate 513 is fixedly connected to the front end of the ejection spring 512. The positioning bracket 53 includes a connecting cylinder 531. 531 is fixedly connected to the front side of the material placement platform 52. A positioning pin 532 that runs through the left and right sides is slidably connected to the middle of the connecting cylinder 531. A pulling block 533 is fixedly connected to the end of the positioning pin 532 away from the connecting frame 51. The end of the positioning pin 532 near the connecting frame 51 extends into the interior of the positioning insertion hole 514. A sliding pressure plate 534 is fixedly connected to the middle of the outer surface of the positioning pin 532. The outer surface of the sliding pressure plate 534 is slidably connected to the inner surface of the connecting cylinder 531. A tightening spring 535 is fixedly connected to the side of the sliding pressure plate 534 away from the connecting frame 51. The end of the tightening spring 535 away from the sliding pressure plate 534 is fixedly connected to the inner wall of the connecting cylinder 531.
[0034] The overall effect of Embodiment 2 is as follows: When the material placement platform 52 is placed into the drying chamber 11, the material placement platform 52 is slid in along the connecting groove 511 on the connecting frame 51. When the positioning pin 532 is aligned with the positioning hole 514, under the action of the tightening spring 535, the positioning pin 532 is automatically inserted into the positioning hole 514, realizing the automatic locking of the material placement platform 52. This ensures that the material placement platform 52 will not shift or slide out of the chamber during the vacuuming process. When it is necessary to remove the material placement platform 52, the pulling block 533 is pulled to pull the positioning pin 532 out of the positioning hole 514. At the same time, the ejection spring 512 on the rear side of the connecting groove 511 will push the ejection plate 513 to push the material placement platform 52 forward a certain distance, making it convenient for the operator to remove the material placement platform 52. This structure is simple and reliable, and the reliable positioning and convenient picking and placing of the material placement platform 52 can be achieved without electronic components.
[0035] The working principle of the entire equipment is as follows: The operator first opens the cabinet door 2, pulls the pull block 533 on the positioning bracket 53, removes the material placement platform 52 from the connecting slide groove 511 of the connecting frame 51, places the freeze-dried strawberries to be dried on the material placement platform 52, and then pushes the material placement platform 52 into the drying chamber 11 along the connecting slide groove 511. When the positioning pin 532 is aligned with the positioning hole 514, under the action of the tightening spring 535, the positioning pin 532 automatically inserts into the positioning hole 514, thus fixing the material placement platform 52. The cabinet door 2 is closed, and the vacuum dryer 1 is started through the control panel 3 to perform a vacuum operation in the drying chamber 11, reducing the ambient air pressure and causing the water in the strawberries to directly vaporize at low temperature. During the operation of the equipment, the heat generated in the drying chamber 11 is transferred to the drying chamber. The cooling tank 43 has a semiconductor cooling chip 45 that absorbs heat from the cooling tank 43 and conducts it to the heat dissipation tank 44. The metal heat-conducting plate 46 enhances the heat conduction efficiency. The first motor 47 drives the heat dissipation fan 48 to exhaust the hot air in the heat dissipation tank 44. The second motor 49 drives the guide fan 410 to form a circulating airflow in the cooling tank 43, dispersing the cooled air in the cooling tank 43 to the interior of the vacuum dryer 1, ensuring the heat dissipation effect of the equipment. After the drying process is completed, the cabinet door 2 is opened and the pull block 533 is pulled to pull the positioning pin 532 out of the positioning hole 514. The ejection spring 512 on the rear side of the connecting slide 511 pushes the ejection plate 513 to push the material platform 52 forward. The operator takes out the material platform 52 to complete the drying operation of freeze-dried strawberries.
[0036] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. A vacuum drying apparatus for freeze-drying strawberries, characterized by: Including vacuum drying machine (1), the front side middle part of vacuum drying machine (1) is rotatably connected with machine cabinet door (2), the front side top of vacuum drying machine (1) is fixedly connected with control panel (3), the bottom right side of vacuum drying machine (1) is installed with heat dissipation frame (4), the front side middle part of vacuum drying machine (1) is opened with drying chamber (11), the inside of drying chamber (11) is provided with a plurality of bearing supports (5); The right side of the heat dissipation frame (4) is fixedly installed with a heat dissipation box (42), the left side of the heat dissipation box (42) is provided with a cooling groove (43) on the upper and lower sides, the middle part of the right side of the heat dissipation frame (4) is provided with a heat dissipation groove (44), the inner surface of the heat dissipation groove (44) is fixedly connected with a semiconductor refrigeration sheet (45) on the middle part of the upper and lower sides, the side of the semiconductor refrigeration sheet (45) away from the heat dissipation groove (44) penetrates into the inside of the cooling groove (43), the inner surface of the heat dissipation groove (44) is fixedly connected with a plurality of metal heat conduction plates (46) on the front and rear sides, the upper and lower ends of the metal heat conduction plate (46) penetrate into the inner surface of the two cooling grooves (43) respectively.
2. The vacuum drying device for freeze-dried strawberry according to claim 1, characterized in that: The middle part of the heat dissipation frame (4) is fixedly connected with a left-right penetrating dust screen (41) on the front and rear sides, two dust screens (41) are respectively arranged on the right side of the front and rear ends of the heat dissipation groove (44).
3. The vacuum drying device for freeze-dried strawberry according to claim 1, characterized in that: The inner wall of the heat dissipation groove (44) is fixedly installed with a first motor (47) on the front and rear sides, and the output shaft of the first motor (47) is fixedly connected with a heat dissipation fan (48).
4. The vacuum drying device for freeze-dried strawberry according to claim 1, characterized in that: The inner wall of the cooling groove (43) is fixedly installed with a second motor (49) on the front and rear sides, and the output shaft of the second motor (49) is fixedly connected with a flow guide fan (410).
5. The vacuum drying device for freeze-dried strawberry according to claim 1, characterized in that: The bearing support (5) comprises two connecting frames (51), and the left and right sides of the inner surface of the drying chamber (11) are fixedly connected with two connecting frames (51), and the opposite surface of the two connecting frames (51) is slidably connected with a material placing table (52), and the left and right sides of the front of the material placing table (52) are fixedly connected with a positioning support (53).
6. The vacuum drying device for freeze-dried strawberry according to claim 5, characterized in that: The front side of the opposite surface of the connecting slide groove (511) is provided with a positioning insertion hole (514).
7. The vacuum drying device for freeze-dried strawberry according to claim 6, characterized in that: The rear side of the inner wall of the connecting slide groove (511) is fixedly connected with an ejection spring (512), and the front end of the ejection spring (512) is fixedly connected with an ejection plate (513).
8. The vacuum drying device for freeze-dried strawberry according to claim 6, characterized in that: The positioning support (53) comprises a connecting cylinder (531), the connecting cylinder (531) is fixedly connected to the front side of the material placing table (52), and the middle part of the connecting cylinder (531) is slidably connected with a left-right penetrating positioning insertion column (532).
9. The vacuum drying device for freeze-dried strawberry according to claim 8, characterized in that: The end of the positioning insertion column (532) away from the connecting frame (51) is fixedly connected with a pulling block (533), and the end of the positioning insertion column (532) close to the connecting frame (51) penetrates into the inside of the positioning insertion hole (514).
10. The vacuum drying device for freeze-dried strawberry according to claim 8, characterized in that: The outer surface of the positioning column (532) is fixedly connected with a sliding pressing plate (534), the outer surface of the sliding pressing plate (534) is slidably connected with the inner surface of the connecting cylinder column (531), and the side, away from the connecting frame (51), of the sliding pressing plate (534) is fixedly connected with a jacking spring (535), and the end, away from the sliding pressing plate (534), of the jacking spring (535) is fixedly connected with the inner wall of the connecting cylinder column (531).