An experimental drying oven
By installing a sample turning mechanism and an airflow disturbance plate inside the experimental drying oven, the problem of uneven sample heating was solved, achieving automated sample turning and uniform heating, thus improving drying efficiency and heat transfer efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING JIUWU TECH CO LTD
- Filing Date
- 2025-07-01
- Publication Date
- 2026-06-26
AI Technical Summary
Existing experimental drying ovens suffer from uneven heating of the upper and lower layers of samples, as well as the front and back sides, resulting in uneven drying and an inability to achieve alternating heating on both sides.
An experimental drying oven was designed with a built-in sample flipping mechanism, including a clamp, a servo motor, and an airflow disturbance plate. This mechanism can automatically flip the sample and disturb the airflow during the flipping process to ensure uniform heating of both sides of the sample.
It enables automated sample flipping, improves drying efficiency and uniformity, enhances heat transfer efficiency, and shortens drying time.
Smart Images
Figure CN224415603U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of drying oven technology, and in particular to an experimental drying oven. Background Technology
[0002] With the increasing demands for precision and efficiency in sample processing in modern laboratories, drying, as an indispensable and crucial step in pre- or post-processing of experiments, directly affects the accuracy and repeatability of subsequent analytical results. Currently, in fields such as chemical analysis, biomedicine, materials science, and environmental monitoring, laboratory drying ovens are widely used as standard equipment for dehydration, constant weight determination, and heat treatment of various samples.
[0003] However, existing laboratory drying ovens generally have some technical shortcomings. For example, in traditional laboratory drying ovens, samples are usually dried only by hot air convection or static heating. Due to the natural rise of hot air and differences in sample placement, uneven heating often occurs between the upper and lower layers, and between the front and back of the sample, resulting in so-called "yin-yang sides." Most drying ovens use a top-supply and bottom-return design, causing the hot air to form a stable stratification within the oven. This results in a higher temperature in the upper area and a lower temperature in the lower area, and the sample remains stationary throughout the drying process, making it impossible to achieve alternating heating on both sides.
[0004] A search revealed a laboratory glassware drying oven disclosed in Chinese Patent Publication No. CN222279092U, comprising a box body, placement components, a water collection component, and mounting components. The box body has a door, which can be opened. The inner wall of the box is vertically divided into several layers, each with mounting holes. The mounting components are connected to the inner wall of the box through the mounting holes, forming a multi-layered mounting structure. Several placement components are provided, and each placement component is detachably connected to a single layer of mounting components. Different placement components have placement openings of different diameters, providing space for placing laboratory glassware. The water collection component is installed at the bottom of the box body. This design effectively utilizes the drying space.
[0005] The patent documents cited above also have the same problem. Samples are usually dried by hot air convection or static heating. Due to the natural rise of hot air and the difference in the placement of the samples, uneven heating of the upper and lower layers, and the front and back of the samples often occurs, resulting in the so-called "yin-yang sides". Utility Model Content
[0006] The purpose of this invention is to provide an experimental drying oven to solve the problems mentioned in the background art.
[0007] To achieve the above objectives, this utility model provides the following technical solution: an experimental drying oven, comprising a drying oven shell and a power distribution base disposed on the bottom surface of the drying oven shell, wherein a drying inner liner is disposed inside the drying oven shell, and a sample tray for placing experimental items to be dried is disposed on the inner bottom wall of the drying inner liner, and a sample flipping mechanism for flipping and drying the items on the sample tray is disposed in the inner cavity of the drying inner liner, the sample flipping mechanism comprising a clamp for holding the sample on the sample tray, a power component for driving the clamp to perform the clamping and putting down of the sample, and a servo motor for driving the clamp to rotate to achieve sample flipping, and airflow disturbance plates are respectively installed on both sides of the clamp, so that when the servo motor drives the clamp to flip, the two airflow disturbance plates fan the airflow in the inner cavity of the drying inner liner by means of the flipping force, so that the drying airflow fully contacts the sample in the inner cavity of the drying inner liner.
[0008] In a preferred embodiment, the fixture includes two sample clamping plates arranged in a V-shape, sample clamping ends integrally connected to the clamping ends of each sample clamping plate, and driving ends integrally fixed to the tail ends of the two sample clamping plates.
[0009] In a preferred embodiment, the end of the drive unit away from the sample clamp plate is integrally connected to a coupling shaft. The coupling shaft is embedded in the inner wall of the rear side of the drying chamber through a sealed bearing, and the coupling shaft extends to the outer rear side of the drying chamber shell and is fixedly connected to the output shaft of the servo motor.
[0010] In a preferred embodiment, the power component includes a finger cylinder, with two finger grippers slidably connected to the free end of the finger cylinder. The two finger grippers are engaged with the outer sides of two sample clamping plates, and each finger gripper is fixedly connected to the adjacent sample clamping plate by bolts.
[0011] In a preferred embodiment of this design, a sealing cover is provided on the outer side of the cylinder body of the finger cylinder.
[0012] In this preferred embodiment, both airflow disturbance plates are bolted to the back of the two sample clamp plates, so that the airflow disturbance plates are set perpendicular to the outer wall of the sample clamp plates.
[0013] In a preferred embodiment of this design, each outer wall of the drying inner liner has a buffer gap between it and each corresponding inner wall of the drying chamber shell, and a buffer insulation component is provided in each buffer gap.
[0014] In a preferred embodiment, the buffer insulation component includes an I-shaped support plate fixedly installed between the drying chamber shell and the drying inner liner by bolts, and multiple air buffer springs symmetrically installed between the inner walls on both sides of the I-shaped support plate.
[0015] In this preferred embodiment, each of the I-shaped support plates has insulation boards bonded to both outer walls, and the insulation boards on both sides of each I-shaped support plate abut against the inner walls of the drying oven shell and the drying inner liner, respectively.
[0016] In a preferred embodiment, the outer wall of the drying chamber shell is hinged with a door, the outer wall of the door is fitted with a handle, the outer wall of the power distribution base is fitted with a control panel, the control panel is equipped with operation buttons and a display screen, and one side of the outer wall of the power distribution base is fitted with a cooling fan.
[0017] Compared with the prior art, the technical effects and advantages of this utility model are as follows:
[0018] This experimental drying oven features a sample flipping mechanism within the drying chamber. This mechanism enables the clamps to grip, rotate, and release samples. The flipping mechanism, comprising the clamp body, drive components, and a servo motor, can complete a 180° flip of the sample at a set time. This automated flipping mechanism breaks away from the limitations of traditional experimental drying ovens that rely on manual intervention. It not only improves drying efficiency but also ensures that both sides of the sample are heated evenly, achieving the sample flipping drying function and reducing manual intervention while improving drying uniformity.
[0019] By installing airflow disturbance plates on both sides of the fixture, the fixture drives airflow during the flipping process, forming local vortices and disturbed airflow. The airflow disturbance plates are arranged vertically on the back of the fixture. During the flipping process, they agitate the hot air in the drying chamber like a fan, increasing the contact area and heat transfer rate between the airflow and the sample. This design can achieve the airflow disturbance function without additional power devices. It has a simple structure but significant effect, realizing the function of enhancing the contact between the drying airflow and the sample surface, and achieving the technical effects of improving heat transfer efficiency and accelerating the drying speed. Attached Figure Description
[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the structure of this utility model;
[0022] Figure 2 This is a schematic diagram of the sample flipping mechanism of this utility model;
[0023] Figure 3This is a schematic diagram of the installation structure of the airflow disturbance plate of this utility model;
[0024] Figure 4 This is a schematic diagram of the structure of the finger cylinder of this utility model;
[0025] Figure 5 This is a schematic diagram of the structure of the I-shaped support plate of this utility model installed in the buffer gap state;
[0026] Figure 6 This is a schematic diagram of the connection structure of the I-shaped support plate of this utility model.
[0027] Explanation of reference numerals in the attached figures:
[0028] In the diagram: 1. Drying oven shell; 2. Power distribution base; 3. Cooling fan; 4. Control panel; 5. Door; 6. Handle; 7. Sample tray; 8. Sample clamp end; 9. Sample flipping mechanism; 10. Drying inner liner; 11. Servo motor; 12. Coupling; 13. Airflow disturbance plate; 14. Sealing cover; 15. Finger gripper; 16. Sample clamp plate; 17. Drive end; 18. Finger cylinder; 19. Buffer gap; 20. Buffer insulation component; 21. I-shaped support plate; 22. Insulation board; 23. Air buffer spring. Detailed Implementation
[0029] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.
[0030] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, back, inside, and outside, are based on the directions shown in the figures of this utility model, and are explained here together.
[0031] This embodiment provides, for example Figures 1 to 6The experimental drying oven shown includes a drying oven shell 1 and a power distribution base 2 disposed on the bottom surface of the drying oven shell 1. The drying oven shell 1 is provided with a drying inner liner 10. The inner bottom wall of the drying inner liner 10 is provided with a sample tray 7 for placing experimental items to be dried. The inner cavity of the drying inner liner 10 is provided with a sample flipping mechanism 9 for flipping the items on the sample tray 7 for drying. The sample flipping mechanism 9 includes a clamp for holding the sample on the sample tray 7, a power component for driving the clamp to perform the clamping and putting down of the sample, and a servo motor 11 for driving the clamp to rotate to achieve sample flipping. Airflow disturbance plates 13 are respectively installed on both sides of the clamp, so that when the servo motor 11 drives the clamp to flip, the two airflow disturbance plates 13 fan the airflow in the inner cavity of the drying inner liner 10 with the help of the flipping force, so that the drying airflow fully contacts the sample in the inner cavity of the drying inner liner 10.
[0032] In this embodiment, the fixture includes two sample clamping plates 16 arranged in a V-shape, a sample clamping end head 8 integrally connected to the clamping end of each sample clamping plate 16, and a drive end head 17 integrally fixed to the tail end of the two sample clamping plates 16.
[0033] In this embodiment, the end of the drive end 17 away from the sample clamp plate 16 is integrally connected to a connecting shaft 12. The connecting shaft 12 is embedded in the inner wall of the rear side of the drying inner liner 10 through a sealed bearing, and the connecting shaft 12 extends to the outer rear side of the drying chamber shell 1 and is fixedly connected to the output shaft of the servo motor 11.
[0034] In this embodiment, the power component includes a finger cylinder 18, and two finger grippers 15 are slidably connected to the free end of the finger cylinder 18. The two finger grippers 15 are engaged with the outside of two sample clamping plates 16, and each finger gripper 15 is fixedly connected to the adjacent sample clamping plate 16 by bolts.
[0035] In this embodiment, a sealing cover 14 is sealed to the outside of the cylinder body of the finger cylinder 18.
[0036] In this embodiment, the two airflow disturbance plates 13 are respectively bolted to the back of the two sample clamp plates 16, so that the airflow disturbance plates 13 are set perpendicular to the outer wall of the sample clamp plates 16.
[0037] In this embodiment, each outer wall of the drying inner liner 10 has a buffer gap 19 between it and each corresponding inner wall of the drying chamber shell 1, and a buffer insulation component 20 is provided in each buffer gap 19.
[0038] In this embodiment, the buffer insulation component 20 includes an I-shaped support plate 21 fixedly installed between the drying chamber shell 1 and the drying inner liner 10 by bolts, and multiple air buffer springs 23 symmetrically installed between the inner walls on both sides of the I-shaped support plate 21.
[0039] In this embodiment, each I-shaped support plate 21 has an insulation board 22 bonded to both outer walls. The insulation boards 22 on both sides of each I-shaped support plate 21 abut against the inner walls of the drying oven shell 1 and the drying inner liner 10, respectively.
[0040] In this embodiment, the outer wall of the drying chamber shell 1 is hinged with a door 5, and a handle 6 is installed on the outer wall of the door 5. The outer wall of the power distribution base 2 is equipped with a control panel 4, which has operation buttons and a display screen. One side of the outer wall of the power distribution base 2 has a heat dissipation fan 3.
[0041] Working principle
[0042] In this experimental drying oven, the operator opens the oven door 5, opens the oven shell 1 through the handle 6, places the sample to be dried on the sample tray 7 inside the drying chamber 10, closes the oven door, and prepares to start the drying program. On the control panel 4, the required drying temperature, time, turning frequency and other parameters are set. The internal temperature of the drying chamber 10 rises to the set value, and hot air circulates in the drying chamber 10 to perform preliminary drying of the sample. At the same time, the cooling fan 3 runs to prevent the internal components of the power distribution base 2 from overheating.
[0043] When the preset flipping time is reached and flipping is required, the finger cylinder 18 drives the finger gripper 15 to clamp the sample clamp plate 16 inward to fix the sample. The servo motor 11 starts and drives the drive end 17 to rotate through the coupling shaft 12. The sample clamp plate 16 rotates accordingly, causing the sample to complete a 180° flip. After flipping, the finger cylinder 18 releases the gripper, the clamp resets, and the sample is placed back on the sample tray 7. The entire flipping process is protected by the sealing cover 14 to prevent dust from entering the mechanical structure.
[0044] During the flipping process, the airflow disturbance plate 13 installed on the back of the sample clamp plate 16 rotates synchronously with the clamp. The disturbance plate stirs the air inside the drying liner 10, forming local vortices and turbulent airflow. This disturbance enhances the contact efficiency between hot air and the sample surface, accelerates moisture evaporation, and improves the drying speed. A buffer gap 19 is provided between the drying liner 10 and the drying chamber shell 1, with an embedded buffer insulation component 20. An I-shaped support plate 21 serves as structural support, and insulation plates 22 are bonded to both sides to provide heat insulation. Multiple air buffer springs 23 are distributed inside the support plate to absorb vibration and reduce heat conduction fluctuations between the inner and outer liners. This structure effectively maintains the stability of the internal temperature of the drying liner and avoids interference from the external environment.
[0045] Once the set drying time is reached, the heating stops, while the cooling fan 3 continues to run to help cool the chamber. The operator can check the drying status through the control panel 4 and manually open the door to remove the sample. If continuous operation is required, a new sample can be placed in and the above process can be repeated.
[0046] It should be noted that, in this document, relational terms such as "one" and "two" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0047] 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. An experimental drying oven, comprising a drying oven shell (1) and a power distribution base (2) disposed on the bottom surface of the drying oven shell (1), characterized in that: The drying chamber shell (1) is provided with a drying inner liner (10). The inner bottom wall of the drying inner liner (10) is provided with a sample tray (7) for placing experimental items to be dried. The inner cavity of the drying inner liner (10) is provided with a sample flipping mechanism (9) for flipping and drying the items on the sample tray (7). The sample flipping mechanism (9) includes a clamp for holding the sample on the sample tray (7), a power component for driving the clamp to perform clamping and putting down the sample, and a servo motor (11) for driving the clamp to rotate to achieve sample flipping. Airflow disturbance plates (13) are respectively installed on both sides of the clamp. When the servo motor (11) drives the clamp to flip, the two airflow disturbance plates (13) fan the airflow in the inner cavity of the drying inner liner (10) with the help of the flipping force, so that the drying airflow is in full contact with the sample in the inner cavity of the drying inner liner (10).
2. The experimental drying oven according to claim 1, characterized in that: The fixture includes two sample clamping plates (16) arranged in a V-shape, sample clamping ends (8) integrally connected to the clamping ends of each sample clamping plate (16), and driving ends (17) integrally fixed to the tail ends of the two sample clamping plates (16).
3. The experimental drying oven according to claim 2, characterized in that: The drive end (17) away from the sample clamp plate (16) is integrally connected to a coupling shaft (12). The coupling shaft (12) is embedded in the inner wall of the drying inner liner (10) through a sealed bearing, and the coupling shaft (12) extends to the outer side of the drying chamber shell (1) and is fixedly connected to the output shaft of the servo motor (11).
4. The experimental drying oven according to claim 3, characterized in that: The power component includes a finger cylinder (18), and two finger grippers (15) are slidably connected to the free end of the finger cylinder (18). The two finger grippers (15) are engaged with the outside of two sample clamping plates (16), and each finger gripper (15) is fixedly connected to the adjacent sample clamping plate (16) by bolts.
5. The experimental drying oven according to claim 4, characterized in that: The outer side of the cylinder body of the finger cylinder (18) is sealed with a sealing cover (14).
6. The experimental drying oven according to claim 2, characterized in that: Both airflow disturbance plates (13) are bolted to the back of the two sample clamp plates (16) respectively, so that the airflow disturbance plates (13) are perpendicular to the outer wall of the sample clamp plates (16).
7. The experimental drying oven according to claim 1, characterized in that: Each outer wall of the drying inner liner (10) has a buffer gap (19) between it and each corresponding inner wall of the drying chamber shell (1), and a buffer insulation component (20) is provided in each buffer gap (19).
8. The experimental drying oven according to claim 7, characterized in that: The buffer insulation component (20) includes an I-shaped support plate (21) fixedly installed between the drying chamber shell (1) and the drying inner liner (10) by bolts, and multiple air buffer springs (23) symmetrically installed between the inner walls on both sides of the I-shaped support plate (21).
9. An experimental drying oven according to claim 8, characterized in that: Each of the I-shaped support plates (21) has an insulation board (22) bonded to the outer walls on both sides. The insulation boards (22) on both sides of each of the I-shaped support plates (21) abut against the inner walls of the drying chamber shell (1) and the drying inner liner (10), respectively.
10. An experimental drying oven according to claim 1, characterized in that: The outer wall of the drying chamber shell (1) is hinged with a door (5), and a handle (6) is installed on the outer wall of the door (5). The outer wall of the power distribution base (2) is equipped with a control panel (4), which has operation buttons and a display screen. One side of the outer wall of the power distribution base (2) has a heat dissipation fan (3).