Drying oven suitable for heating temperature-sensitive sample

Abstract

The utility model relates to the technical field of heating devices, in particular to a drying oven suitable for heating temperature-sensitive samples, which comprises a drying oven body and a heat preservation box body connected to the drying oven body, and a sealing piece is arranged at the joint of the heat preservation box body and the drying oven body. The drying oven body is provided with a first oven door, the heat preservation box body is provided with a second oven door, and the second oven door is provided with a sealing opening used for allowing a sample taking and placing device to penetrate. According to the utility model, the second box door is opened, a sample to be heated is placed in the heat preservation box body, and the second box door is closed; when the temperature rises to the set temperature, the first oven door is opened, a sample to be tested is sent into the oven body from the heat preservation box body through the sample taking and placing device, then the sample taking and placing device retreats from the oven body into the heat preservation box body, the first oven door is closed, and a heating experiment is carried out; the temperature drop caused by opening of the box door and the subsequent possible temperature rushing condition can be effectively improved, the experimental error is reduced, and the accuracy and reliability of the experiment are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heating devices, and more specifically, to an oven suitable for heating temperature-sensitive samples. Background Art

[0002] Ovens are widely used in precision baking, drying, tempering, preheating, shaping, processing, etc. of electronics, electric motors, communications, electroplating, plastics, hardware chemicals, food, printing, pharmaceuticals, PC boards, powders, impregnation, spraying, glass, ceramics, wood building materials, and so on. At present, when the temperature of the oven on the market rises to the set temperature, the door needs to be opened to put the sample to be heated inside. Once the door is opened, the temperature inside the oven will inevitably decrease. If the temperature is increased programmedly at this time, the temperature inside the box may rise continuously and overshoot may occur. If the heating object of the oven is a temperature-sensitive sample such as a lithium-ion battery separator, the overshoot phenomenon will cause errors and affect the accuracy of the experimental results. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide an oven suitable for heating temperature-sensitive samples, so as to improve the temperature drop caused by opening the door and the subsequent possible overshoot situation, reduce experimental errors, and improve the accuracy and reliability of the experiment.

[0004] To solve the above technical problems, the technical solution adopted by the utility model is:

[0005] Provide an oven suitable for heating temperature-sensitive samples, including an oven body and a heat preservation box body connected to the oven body. A seal is provided at the connection between the heat preservation box body and the oven body; the oven body is provided with a first door, the heat preservation box body is provided with a second door, and the second door is provided with a seal for inserting a sample taking and placing device.

[0006] For the oven suitable for heating temperature-sensitive samples of the utility model, open the second door, put the sample to be heated into the heat preservation box body, and close the second door; the oven body starts to heat up. When the temperature rises to the set temperature, open the first door, and send the sample to be tested from the heat preservation box body into the oven body through the sample taking and placing device. Then the sample taking and placing device withdraws from the oven body into the heat preservation box body, closes the first door, and conducts a heating experiment. The oven suitable for heating temperature-sensitive samples of the utility model can effectively improve the temperature drop caused by opening the door and the subsequent possible overshoot situation, reduce experimental errors, and improve the accuracy and reliability of the experiment; because the operating environments of the oven body and the heat preservation box body are relatively airtight, the operator has sufficient time to take and place the sample to be tested and perform relevant experimental operations, which can effectively reduce unnecessary experimental errors and improve the consistency of experimental results.

[0007] Further, the heat preservation box body includes a first connection part, a telescopic part, and a second connection part that are sequentially connected. The first connection part is connected to the oven body, and the second door is installed on the second connection part. When the length of the sample to be tested is relatively long, the telescopic part can be extended according to the length of the sample to be tested; since it is necessary to minimize heat dissipation, in principle, the telescopic part is compressed as much as possible until the sample can just be placed in it.

[0008] Further, the telescopic part includes a number of telescopic units that are sequentially connected. The telescopic unit includes a first telescopic part and a second telescopic part, and an included angle whose angle can change under the action of an external force is formed between the first telescopic part and the second telescopic part. Using a bellows telescopic tube as the telescopic part, the structure is simple and the operation is convenient.

[0009] Further, the sample loading and unloading device includes a rod body, a second tray, and a bracket. The rod body is inserted through the sealing port, the rod body is connected to the second tray, and the bracket is located inside the heat preservation box body and is arranged at the same height as the sealing port. After the sample is placed in the heat preservation box body and the second door is closed, the sample to be tested is operated through the sample loading and unloading device, and the second door is no longer opened, ensuring the relative sealing of the environments inside the oven body and the heat preservation box body, thereby effectively improving the temperature drop caused by opening the door and the subsequent possible temperature overshoot situation.

[0010] Further, a fan, a heater, and a temperature sensor are provided inside the oven body, and the fan, the heater, and the temperature sensor are all connected to a controller. The temperature sensor detects the temperature inside the oven body. If the temperature is too high, the controller controls the fan to operate to reduce the temperature inside the oven body to the set temperature, thereby ensuring the uniformity of the temperature inside the oven body; when the heating is completed, the fan can also be started to achieve rapid cooling.

[0011] Further, the second door is provided with an observation window, and the sealing port is opened on the observation window. According to the experimental needs, the first door can be opened during the experiment, and the sample to be tested inside the oven body can be observed in a timely manner through the observation window on the second door.

[0012] Further, the sealing port is a self-closing rubber sealing port. The rubber sealing port can be in close contact with the part of the sample loading and unloading device passing through the sealing port. Thus, even when the sample loading and unloading device is operated, the relative sealing of the environments inside the oven body and the heat preservation box body can still be ensured.

[0013] Further, a transmission mechanism that converts the rotational motion of the input end into the linear motion of the output end is provided between the first door and the oven body. By setting the transmission mechanism, the first door can be driven to open through the transmission mechanism without opening the second door for external operation, which is convenient for opening the first door to observe the sample to be tested during the experiment.

[0014] Further, the transmission mechanism includes a lead screw, a slider, limit blocks located on both sides of the slider, and limit grooves opened on the oven body. The first door is arranged on the slider. The lead screw is rotatably installed on the oven body. The slider is threadedly connected to the lead screw, and the limit blocks are slidably connected to the limit grooves. The transmission mechanism of the lead screw and nut realizes the conversion of external rotation into the linear movement of the first door, with stable transmission and smooth movement of the first door.

[0015] Further, there are two first doors, and two groups of sliders. The two first doors are respectively arranged on the two groups of sliders. The lead screw is provided with a first thread and a second thread with opposite spiral directions. The two groups of sliders are respectively threadedly connected to the first thread and the second thread. When opening the first door, it can be opened from the middle to both sides, so that the situation of the samples to be tested inside the oven body can be observed when opening the first door as small as possible.

[0016] Compared with the prior art, the beneficial effects of the present utility model are:

[0017] The oven of the present utility model suitable for heating temperature-sensitive samples can effectively improve the temperature drop caused by opening the door and the subsequent possible temperature overshoot, reduce experimental errors, and improve the accuracy and reliability of the experiment; since the operating environments of the oven body and the heat preservation box are relatively enclosed, the operator has sufficient time to take and place the samples to be tested and perform relevant experimental operations, which can effectively reduce unnecessary experimental errors and improve the consistency of experimental results. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of an oven suitable for heating temperature-sensitive samples;

[0019] Figure 2 It is a schematic structural diagram of the oven body;

[0020] Figure 3 It is a schematic structural diagram of the heat preservation box;

[0021] Figure 4 It is a schematic structural diagram of the sample taking and placing device;

[0022] Figure 5 It is a schematic structural diagram of the transmission mechanism;

[0023] Figure 6 It is a schematic structural diagram of the transmission mechanism from another angle;

[0024] In the accompanying drawings: 100, oven body; 110, fan; 120, heater; 130, temperature sensor; 140, first tray; 200, heat preservation box body; 210, first connecting part; 220, telescopic part; 221, telescopic unit; 230, second connecting part; 300, first box door; 400, second box door; 410, sealing; 420, observation window; 500, sample picking and placing device; 510, rod body; 520, second tray; 530, bracket; 600, transmission mechanism; 610, lead screw; 620, slider; 630, limit block; 640, limit groove. Detailed implementation manners

[0025] The present utility model will be further described below in conjunction with the detailed implementation manners. Among them, the accompanying drawings are only used for exemplary illustration, showing only schematic diagrams rather than physical diagrams, and should not be construed as a limitation to this patent; in order to better illustrate the embodiments of the present utility model, some components in the accompanying drawings will be omitted, enlarged or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted.

[0026] In the accompanying drawings of the embodiments of the present utility model, the same or similar reference numerals correspond to the same or similar components; in the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, it is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the accompanying drawings are only used for exemplary illustration and should not be construed as a limitation to this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0027] Embodiment 1

[0028] This embodiment is the first embodiment of the oven suitable for heating temperature-sensitive samples of the present utility model, including an oven body 100 and a heat preservation box body 200 connected to the oven body 100. A sealing member is provided at the connection between the heat preservation box body 200 and the oven body 100; the oven body 100 is provided with a first box door 300, the heat preservation box body 200 is provided with a second box door 400, and the second box door 400 is provided with a sealing 410 for inserting a sample picking and placing device 500.

[0029] Among them, in this embodiment, the heat preservation box body 200 is a heat insulation structure. The heat preservation box body 200 is prepared from heat insulation materials or heat insulation materials are filled in the side wall of the heat preservation box body 200; the oven body 100 can adopt a heating device with an existing temperature control function. A detachable connection method is adopted between the heat preservation box body 200 and the oven body 100, so that the heat preservation box body 200 can be detachably installed on other oven bodies 100 relative to the oven body 100 to improve the temperature drop caused by opening the box door and the subsequent possible temperature overshoot situation; a seal is provided at the connection between the heat preservation box body 200 and the oven body 100 to avoid heat dissipation at the connection between the two. The seal can be provided on the heat preservation box body 200 or on the oven body 100; since the oven body 100 is externally connected with the heat preservation box body 200, and to avoid temperature drop and temperature overshoot, only one of the first box door 300 and the second box door 400 can be opened at the same time. When the first box door 300 needs to be opened, since the second box door 400 needs to remain closed, at this time, the first box door 300 can be opened from the side of the oven body 100, or corresponding operations can be performed on the first box door 300 by inserting through the sealing port 410 with corresponding tools.

[0030] A fan 110, a heater 120 and a temperature sensor 130 are provided in the oven body 100, and the fan 110, the heater 120 and the temperature sensor 130 are all connected to a controller. The temperature sensor 130 detects the temperature inside the oven body 100. If the temperature is too high, the fan 110 is controlled to work to reduce the temperature inside the oven body 100 to the set temperature, so as to ensure the uniformity of the temperature inside the oven body 100; when the heating is completed, the fan 110 can also be started to achieve rapid cooling. For the convenience of the experiment of the sample to be tested, a first tray 140 for placing the sample to be tested can be provided in the oven body 100.

[0031] In addition, in this embodiment, the sample loading and unloading device 500 includes a rod body 510, a second tray 520, and a bracket 530. The rod body 510 is inserted through the sealing opening 410. The rod body 510 is connected to the second tray 520. The bracket 530 is located inside the heat preservation box body 200 and is arranged at the same height as the sealing opening 410. The connection mode between the second tray 520 and the rod body 510 can adopt a detachable connection mode, so that the rod body 510 can always be inserted into the sealing opening 410 without being taken out from the sealing opening 410. The second tray 520 is set according to the size of the sample to be tested. The second tray 520 is generally set as a grid tray. The bracket 530 is located inside the heat preservation box body 200 and is arranged at the same height as the sealing opening 410, providing two support points for the rod body 510. There is no need for an operator to hold the rod body 510 to keep the sample loading and unloading device 500 stable. Only when it is necessary to move the sample to be tested does the operator need to move the rod body 510. The operation is simple. During the operation, since there are two support points for the rod body 510, the operation is more labor-saving and the movement is more stable. When this embodiment is implemented, after the sample is placed in the heat preservation box body 200 and the second box door 400 is closed, the sample to be tested is operated through the sample loading and unloading device 500, and the second box door 400 is no longer opened, ensuring the relative sealing of the environments inside the oven body 100 and the heat preservation box body 200, thereby effectively improving the temperature drop caused by opening the box door and the subsequent possible temperature overshoot situation.

[0032] Specifically, due to the high-temperature condition limitation of the oven body 100 and the requirement of the heat insulation environment, a glass observation window 420 is not usually provided on the first box door 300. In order to facilitate observation when loading and unloading the sample to be tested and to observe the sample during the experiment, an observation window 420 is provided on the second box door 400 in this embodiment. The observation window 420 of this embodiment can be specifically set as a double-layer heat-insulating glass window to ensure the heat insulation environment inside the oven body 100 and the heat preservation box body 200. For the convenience of loading and unloading the sample to be tested, it is better that the height of the sealing opening 410 is the same as that of the first tray 140. At the same time, for the convenience of connecting the sealing opening 410 and the second box door 400, the sealing opening 410 of this embodiment is opened on the observation window 420. In order to achieve effective contact between the rod body 510 of the sample loading and unloading device and the sealing opening 410, the sealing opening 410 of this embodiment is a self-closing rubber sealing opening. The rubber sealing opening is squeezed between the outer periphery of the rod body 510 and the second box door 400, and even when the sample loading and unloading device 500 is operated, the relative sealing of the environments inside the oven body 100 and the heat preservation box body 200 can still be ensured. According to the experimental needs in this embodiment, the first box door 300 can be opened during the experiment, and through the observation window 420 on the second box door 400, the sample to be tested inside the oven body 100 can be observed in time.

[0033] When this embodiment is implemented, open the second box door 400, place the sample to be heated on the second tray 520 and put it into the insulation box body 200, and close the second box door 400; the oven body 100 starts to heat up. When the temperature rises to the set temperature, open the first box door 300, and send the sample to be tested from the insulation box body 200 into the oven body 100 through the sample picking and placing device 500. Then the sample picking and placing device 500 withdraws from the oven body 100 into the insulation box body 200 and is supported on the sealing port 410 and the bracket 530. Close the first box door 300 and conduct a heating experiment. During the experiment, according to the experimental needs, the first box door 300 can be opened, and through the observation window 420 on the second box door 400, the sample to be tested in the oven body 100 can be observed in a timely manner.

[0034] Embodiment Two

[0035] This embodiment is the second embodiment of the oven suitable for heating temperature-sensitive samples of the present utility model. This embodiment is similar to Embodiment One. The difference lies in that the insulation box body 200 includes a first connecting portion 210, a telescopic portion 220, and a second connecting portion 230 that are sequentially connected. The first connecting portion 210 is connected to the oven body 100, and the second box door 400 is installed on the second connecting portion 230. In this embodiment, the size of the insulation space in the insulation box body 200 can be adjusted according to the size of the sample to be tested. The telescopic portion 220 adopts a compressible and deformable structure, and the first connecting portion 210 and the second connecting portion 230 adopt structures with a certain hardness and a certain structural strength to facilitate the installation and connection. When the length of the sample to be tested is relatively long, the telescopic portion 220 can be extended according to the length of the sample to be tested; in principle, in order to minimize heat loss, the telescopic portion 220 is compressed as much as possible until it can just fit the sample.

[0036] Specifically, for the convenience of the telescopic operation of the telescopic portion 220, the telescopic portion 220 of this embodiment adopts a bellows telescopic tube. Specifically, the telescopic portion 220 includes a plurality of telescopic units 221 that are sequentially connected. The telescopic unit 221 includes a first telescopic portion and a second telescopic portion, and an included angle whose angle can change under the action of an external force is formed between the first telescopic portion and the second telescopic portion. The bellows telescopic tube of this embodiment can generally support its own gravity to avoid deformation. To further avoid the deformation of the bellows telescopic tube, a telescopic plate can be provided at the bottom of the bellows telescopic tube to support the bellows telescopic tube. One end of the telescopic plate is connected to the oven body 100, and the telescopic plate expands and contracts together with the expansion and contraction of the bellows telescopic tube.

[0037] When this embodiment is implemented, the telescopic degree of the telescopic portion 220 can be adjusted according to the length of the sample to be tested, so that the size of the telescopic portion 220 can just fit the sample, and the space in the insulation box body 200 is minimized, thereby reducing heat loss.

[0038] Embodiment Three

[0039] This embodiment is the third embodiment of the oven of the present utility model suitable for heating temperature-sensitive samples. This embodiment is similar to Embodiment 1, except that a transmission mechanism 600 for converting the rotational movement of the input end into the linear movement of the output end is provided between the first door 300 and the oven body 100. By setting the transmission mechanism 600, the first door 300 can be driven to open by the transmission mechanism 600 without opening the second door 400 for external operation, so as to facilitate opening the first door 300 during the experiment to observe the sample to be tested.

[0040] Specifically, the transmission mechanism 600 includes a lead screw 610, a slider 620, limit blocks 630 located on both sides of the slider 620, and a limit groove 640 formed in the oven body 100. The first door 300 is arranged on the slider 620. The lead screw 610 is rotatably installed on the oven body 100. The slider 620 is threadedly connected to the lead screw 610. The limit blocks 630 are slidably matched with the limit groove 640 to limit the rotation of the slider 620, so that the rotation of the lead screw 610 drives the linear movement of the slider 620. The lead screw 610 only rotates relative to the oven body 100 and does not undergo axial or radial linear movement. The transmission mechanism 600 of the lead screw 610 nut realizes the conversion of the external rotation into the linear movement of the first door 300, with stable transmission and smooth movement of the first door 300. For the convenience of rotating the lead screw 610, a rotating nut is provided at the end of the lead screw 610 in this embodiment. Of course, the transmission mechanism 600 of the lead screw 610 nut is not a limitation of the transmission mechanism 600 of the present utility model, and other transmission mechanisms 600 that can stably convert rotation into linear movement can also be applied to the present utility model.

[0041] When the sample is being tested, it is generally placed in the central area of the oven body 100. And when observing the sample during the experiment, the distance between the two opened first doors 300 should be as small as possible to avoid heat dissipation. Therefore, in this embodiment, there are two first doors 300, and there are two groups of sliders 620. The two first doors 300 are respectively arranged on the two groups of sliders 620. The lead screw 610 is provided with a first thread and a second thread with opposite spiral directions. The two groups of sliders 620 are respectively threadedly connected to the first thread and the second thread. When the lead screw 610 is rotated, under the action of the first thread and the second thread with opposite spiral directions, the two first doors 300 move closer to or away from each other simultaneously, and can be opened from the middle to both sides, so that the situation of the sample to be tested inside the oven body 100 can be observed when the first doors 300 are opened as small as possible.

[0042] When this embodiment is implemented, the oven body 100 starts to heat up. When the temperature rises to the set temperature, the screw rod 610 is rotated to open the first door 300. The sample to be tested is sent into the oven body 100 from the heat preservation box body 200 through the sample loading and unloading device 500. Then, the sample loading and unloading device 500 withdraws from the oven body 100 into the heat preservation box body 200 and is supported on the sealing part 410 and the support 530. The screw rod 610 is rotated in the reverse direction to close the first door 300, and the heating experiment is carried out. During the experiment, according to the experimental needs, the screw rod 610 can be rotated to open the first door 300, and the sample to be tested in the oven body 100 can be observed in time through the observation window 420 on the second door 400.

[0043] In the specific content of the above specific implementation manner, each technical feature can be combined arbitrarily without contradiction. For the sake of concise description, not all possible combinations of the above technical features are described. However, as long as the combinations of these technical features do not exist in contradiction, they should all be considered as the scope recorded in this specification.

[0044] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. An oven suitable for heating temperature-sensitive samples, characterized in that: The invention comprises an oven body (100) and a heat-insulating box body (200) connected to the oven body (100), wherein a sealing member is provided at the connection between the heat-insulating box body (200) and the oven body (100); the oven body (100) is provided with a first box door (300), the heat-insulating box body (200) is provided with a second box door (400), and the second box door (400) is provided with a sealing opening (410) for inserting a sample taking and placing device (500).

2. The oven suitable for heating temperature-sensitive samples according to claim 1, characterized in that: The heat-insulating box body (200) comprises a first connecting part (210), a telescopic part (220) and a second connecting part (230) which are connected in sequence, the first connecting part (210) is connected to the oven body (100), and the second box door (400) is installed on the second connecting part (230).

3. The oven suitable for heating temperature-sensitive samples according to claim 2, characterized in that: The telescopic portion (220) comprises a plurality of telescopic units (221) connected in sequence, wherein the telescopic unit (221) comprises a first telescopic portion and a second telescopic portion, wherein an angle which can be changed by an external force is formed between the first telescopic portion and the second telescopic portion.

4. The oven suitable for heating temperature-sensitive samples according to claim 1, characterized in that: The sample taking and placing device (500) comprises a stick body (510), a second tray (520) and a bracket (530), wherein the stick body (510) is connected to the seal (410), the stick body (510) is connected to the second tray (520), and the bracket (530) is located in the heat preservation box (200) and the bracket (530) is arranged at the same height as the seal (410).

5. The oven suitable for heating temperature-sensitive samples according to claim 1, characterized in that: A fan (110), a heater (120) and a temperature sensor (130) are arranged in the oven body (100); the fan (110), the heater (120) and the temperature sensor (130) are all connected to a controller.

6. The oven suitable for heating temperature-sensitive samples according to claim 1, characterized in that: The second box door (400) is provided with an observation window (420), and the sealing opening (410) is opened in the observation window (420).

7. The oven suitable for heating temperature-sensitive samples according to claim 6, characterized in that: The seal (410) is a self-closable rubber seal.

8. The oven suitable for heating temperature-sensitive samples according to any one of claims 1 to 7, characterized in that: A transmission mechanism (600) is provided between the first oven door (300) and the oven body (100) for converting rotation at the input end into linear motion at the output end.

9. The oven suitable for heating temperature-sensitive samples according to claim 8, characterized in that: The transmission mechanism (600) comprises a screw rod (610), a slider (620), limit blocks (630) located on both sides of the slider (620), and a limit groove (640) opened on the oven body (100); the first door (300) is arranged on the slider (620); the screw rod (610) is rotatably mounted on the oven body (100); the slider (620) is threadedly connected to the screw rod (610); and the limit blocks (630) are slidably connected to the limit groove (640).

10. The oven suitable for heating temperature-sensitive samples according to claim 9, characterized in that: The first door (300) is provided with two leaves, the sliders (620) are provided with two groups, the two first doors (300) are provided with two groups of sliders (620), the screw rod (610) is provided with a first thread and a second thread with opposite spiral directions, and the two groups of sliders (620) are respectively threadedly connected with the first thread and the second thread.

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