Waste heat recovery device of day lily drying machine
By introducing a gas heating tank, parallel pipes, and a ventilation fan system into the daylily dryer, the problem of low drying efficiency caused by uneven heat distribution was solved, achieving more efficient hot air distribution and airflow, and improving the drying effect.
Patent Information
- Application Number
- CN202520992787.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-20
- Publication Date
- 2026-04-14
- Estimated Expiration
- 2035-05-20
AI Technical Summary
Existing daylily dryers have difficulty concentrating heat, resulting in low drying efficiency.
By employing a gas heating tank and parallel pipe structure, combined with bottom and top ventilation fans, and through the design of connecting holes and placement mesh, uniform distribution of hot air and airflow are achieved, thereby improving drying efficiency.
It improves drying efficiency, reduces uneven drying caused by uneven hot air, increases hot air utilization, and reduces the frequency of manual turning.
Smart Images

Figure CN224121549U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of daylily drying technology, specifically relating to a waste heat recovery device for a daylily dryer. Background Technology
[0002] Daylily, scientifically known as Hemerocallis fulva, is a traditional edible flower. Fresh daylilies contain trace amounts of colchicine, requiring blanching or drying to remove the toxicity. After processing, they have a crisp and tender texture and are rich in dietary fiber and vitamins. They are commonly used in soups, salads, or stir-fries. Anciently called "forget-sorrow herb," the Book of Songs contains the line "Where can I find the forget-sorrow herb, to plant it behind my back?" symbolizing a traveler's longing for their mother through the daylily. Dried daylilies are easy to preserve and are a common and healthy ingredient in everyday meals.
[0003] A known authorized patent with application number 202121255536.X discloses a daylily drying room: it includes a horizontally arranged elongated box, a drying device, multiple storage trays, and multiple support devices located inside the box; the multiple support devices are evenly distributed vertically; the drying device includes a hot air blower and a hot air duct assembly connected to the air outlet of the hot air blower; the hot air duct assembly has multiple components, with one hot air duct assembly located directly above a support device; both ends of the box have doors; the support devices are used to support the storage trays. This daylily drying room can efficiently dry daylilies and facilitate their removal.
[0004] However, the following problems were found in the implementation of the relevant technology: When in use, the device uses multiple sets of air ducts for drying operations. During the drying process, the heat of the dryer is difficult to concentrate, resulting in low drying efficiency.
[0005] Therefore, a waste heat recovery device for daylily drying machine is proposed to solve the above problems. Utility Model Content
[0006] This utility model proposes a waste heat recovery device for a daylily dryer, which solves the problem in related technologies where the device uses multiple sets of air ducts for drying operations, making it difficult to concentrate the heat of the dryer during the drying process, resulting in low drying efficiency.
[0007] The technical solution of this utility model is as follows: A waste heat recovery device for a daylily dryer, comprising: a drying box, a partition and an equipment compartment, characterized in that the drying box is provided with a partition, the outer wall of the partition is provided with a support edge, and a placement net is inserted above the support edge;
[0008] The drying oven has an equipment compartment on one side, and a gas heating tank is installed inside the equipment compartment. An air pump is installed on the top of the drying oven, and a connecting pipe is installed at the output end of the air pump. The other end of the connecting pipe is fixedly connected to the input end of the gas heating tank.
[0009] Preferably, the output end of the gas heating tank is provided with a conveying pipe, the end of the conveying pipe is provided with a parallel pipe, the parallel pipe is connected to the interior of the drying box, and the output end of the parallel pipe is located on both sides of the inner wall of the drying box;
[0010] The partition has connecting holes on its outer surface, which are located on the upper and lower sides near the center of the partition.
[0011] Preferably, the placement net includes a ventilation net, a fixed side, and a vent. The outer wall of the ventilation net is fixedly connected to the inner wall of the fixed side, the fixed side is inserted into the upper wall of the support edge, and the vent is located at the center of the ventilation net.
[0012] Preferably, a top-ventilated fan is provided on the side of the drying box away from the equipment compartment, and the top-ventilated fan is located on the inner wall of the drying box. A bottom-ventilated fan is provided at the bottom of the drying box, and the bottom-ventilated fan is located on the inner wall of the bottom of the drying box.
[0013] Preferably, a dehumidifier is provided on the top of the drying box, and the output end of the dehumidifier is located at the center of the top of the drying box. A humidifier is provided inside the equipment compartment, and the output end of the humidifier is located inside the drying box. The equipment compartment is provided on the top of the drying box.
[0014] Preferably, the drying oven has a sealed door on its outer wall and support legs at its bottom.
[0015] The working principle and beneficial effects of this utility model are as follows:
[0016] By using a gas heating tank and parallel pipes, hot air can be quickly transferred to the interior of the drying chamber, allowing the drying chamber near the equipment compartment to heat up faster and achieve higher drying efficiency. The connecting holes allow hot air to be transferred to the drying chamber on the other side of the partition, making fuller use of the hot air. Furthermore, the bottom and top ventilation fans, when turned on, increase airflow inside the drying chamber, further enhancing drying efficiency. Attached Figure Description
[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0019] Figure 2 This is a top-view three-dimensional structural diagram of the present invention;
[0020] Figure 3 A cross-sectional three-dimensional structural diagram of the equipment compartment is provided for this utility model;
[0021] Figure 4This is a three-dimensional structural diagram of the netting proposed in this utility model.
[0022] In the diagram: 1. Drying oven; 2. Partition; 3. Placement net; 31. Ventilation net; 32. Fixed edge; 33. Ventilation opening; 4. Support edge; 5. Connecting hole; 6. Bottom ventilation fan; 7. Top ventilation fan; 8. Sealed door; 9. Dehumidifier; 10. Air pump; 12. Equipment compartment; 13. Connecting pipe; 14. Gas heating tank; 15. Delivery pipe; 16. Parallel pipe; 17. Humidifier; 18. Support leg. Detailed Implementation
[0023] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.
[0024] Implementation
[0025] Please see Figure 1 -4, a waste heat recovery device for a daylily dryer, comprising: a drying box 1, a partition 2 and an equipment compartment 12, characterized in that the drying box 1 is provided with a partition 2 inside, the outer wall of the partition 2 is provided with a support edge 4, and a placement net 3 is inserted above the support edge 4.
[0026] A device compartment 12 is provided on one side of the drying oven 1. A gas heating tank 14 is installed inside the device compartment 12. An air pump 10 is installed on the top of the drying oven 1. A connecting pipe 13 is provided at the output end of the air pump 10. The other end of the connecting pipe 13 is fixedly connected to the input end of the gas heating tank 14.
[0027] The technical solution provided in this embodiment is as follows: In use, first place the daylilies on the ventilation net 31, ensuring the stacking height of the daylilies is lower than the height of the ventilation opening 33. Then, insert the placement net 3 onto the support edge 4. Next, close the sealing door 8. After closing, start the gas heating tank 14 and the air pump 10. The air pump 10 pumps air into the gas heating tank 14 and transports it through the delivery pipe 15 and parallel pipe 16. Simultaneously, the humidity detector 11 monitors the internal humidity of the drying chamber 1 in real time, working in conjunction with the dehumidifier 9 and humidifier 17 to maintain the appropriate air humidity inside the drying chamber 1. Ideally, to avoid excessively high or low humidity, the hot air heated by the gas heating tank 14 heats the inside of the drying chamber 1 near the equipment compartment 12, and then enters the other side of the drying chamber 1 through the connecting hole 5. At the same time, because the connecting hole 5 is located in the center of the partition 2, the hot air can more thoroughly dry the daylilies placed on the ventilation net 31. After entering the drying chamber 1 on the other side, the bottom ventilation fan 6 and the top ventilation fan 7 are started. The start of the two ventilation fans strengthens the airflow inside the drying chamber 1, allowing the hot air to remove moisture more quickly and increasing the drying efficiency.
[0028] Furthermore, the output end of the gas heating tank 14 is provided with a conveying pipe 15, and the end of the conveying pipe 15 is provided with a parallel pipe 16. The parallel pipe 16 is connected to the interior of the drying box 1, and the output end of the parallel pipe 16 is located on both sides of the inner wall of the drying box 1.
[0029] The outer surface of the partition 2 has a connecting hole 5, which is located on the upper and lower sides near the center of the partition 2.
[0030] Specifically, by setting up the parallel pipe 16, the hot air output from the gas heating tank 14 can be dispersed into two channels and enter the interior of the drying chamber 1, thereby increasing the drying efficiency.
[0031] Furthermore, the placement net 3 includes a ventilation net 31, a fixed edge 32, and a ventilation opening 33. The outer wall of the ventilation net 31 is fixedly connected to the inner wall of the fixed edge 32, the fixed edge 32 is inserted into the upper wall of the support edge 4, and the ventilation opening 33 is located at the center of the ventilation net 31.
[0032] Specifically, by setting up the placement net 3, the efficiency of hot air passage can be increased, the frequency of turning during the drying process can be reduced, and manual labor can be reduced. The vent 33 further increases the ventilation efficiency and avoids different drying degrees of daylilies on the upper and lower sides.
[0033] Furthermore, a top ventilation fan 7 is provided on the side of the drying chamber 1 away from the equipment compartment 12. The top ventilation fan 7 is located on the inner wall of the drying chamber 1, and a bottom ventilation fan 6 is provided at the bottom of the drying chamber 1. The bottom ventilation fan 6 is located on the inner wall of the bottom of the drying chamber 1.
[0034] Specifically, by setting up two ventilation fans, the airflow intensity can be increased, making the air more effective at removing moisture and preventing the air inside the drying oven from becoming stagnant and developing odors.
[0035] Furthermore, a dehumidifier 9 is installed on the top of the drying chamber 1, with the output end of the dehumidifier 9 located at the center of the top of the drying chamber 1. A humidifier 17 is installed inside the equipment compartment 12, with the output end of the humidifier 17 located inside the drying chamber 1. The equipment compartment 12 is installed on the top of the drying chamber 1.
[0036] Specifically, by setting up the dehumidifier 9 and the humidifier 17, it is possible to avoid spoilage caused by excessive humidity inside the drying box 1 or cracking caused by excessively low humidity.
[0037] Furthermore, the outer wall of the drying oven 1 is provided with a sealing door 8, and the bottom of the drying oven 1 is provided with support legs 18.
[0038] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A waste heat recovery device for a daylily dryer, comprising: The drying box (1), partition (2) and equipment compartment (12) are characterized in that the drying box (1) is provided with a partition (2) inside, the partition (2) is provided with a support edge (4) on the outer wall of the partition (2), and a placement net (3) is inserted above the support edge (4). The drying box (1) has an equipment compartment (12) on one side, and a gas heating tank (14) is installed inside the equipment compartment (12). An air pump (10) is installed on the top of the drying box (1), and a connecting pipe (13) is installed at the output end of the air pump (10). The other end of the connecting pipe (13) is fixedly connected to the input end of the gas heating tank (14).
2. The waste heat recovery device for a daylily dryer according to claim 1, characterized in that: The gas heating tank (14) is provided with a conveying pipe (15) at its output end, and a parallel pipe (16) is provided at the end of the conveying pipe (15). The parallel pipe (16) is connected to the interior of the drying box (1), and the output end of the parallel pipe (16) is located on both sides of the inner wall of the drying box (1). The partition (2) has a connecting hole (5) on its outer surface, and the connecting hole (5) is located on the upper and lower sides near the center of the partition (2).
3. The waste heat recovery device for a daylily dryer according to claim 1, characterized in that: The placement net (3) includes a ventilation net (31), a fixed side (32) and a ventilation opening (33). The outer wall of the ventilation net (31) is fixedly connected to the inner wall of the fixed side (32). The fixed side (32) is inserted into the upper wall of the support edge (4). The ventilation opening (33) is located at the center of the ventilation net (31).
4. The waste heat recovery device for a daylily dryer according to claim 1, characterized in that: A top ventilation fan (7) is provided on the side of the drying box (1) away from the equipment compartment (12). The top ventilation fan (7) is located on the inner wall of the drying box (1). A bottom ventilation fan (6) is provided at the bottom of the drying box (1). The bottom ventilation fan (6) is located on the bottom inner wall of the drying box (1).
5. The waste heat recovery device for a daylily dryer according to claim 1, characterized in that: A dehumidifier (9) is provided on the top of the drying box (1), and the output end of the dehumidifier (9) is located at the top center of the drying box (1). A humidifier (17) is provided inside the equipment compartment (12), and the output end of the humidifier (17) is located inside the drying box (1). The equipment compartment (12) is provided on the top of the drying box (1).
6. The waste heat recovery device for a daylily dryer according to claim 1, characterized in that: The drying oven (1) is provided with a sealing door (8) on its outer wall and a support leg (18) at the bottom of the drying oven (1).
Citation Information
Patent Citations
Hemerocallis fulva drying room
CN215571670U