Induced air heating type drying oven

Abstract

The utility model provides a kind of inner air guide heating type drying cabinet, including drying cabinet body, the outer wall of drying cabinet body is equipped with control area, drying chamber is opened in the side of control area on drying cabinet body, and the inner bottom wall of drying chamber is integrally formed ventilation cover, ventilation cover top is equipped with several ventilation holes, which are connected with its inside, drying chamber is opened in the side of drying chamber away from control area in drying cabinet body, and the inner bottom wall of cavity is equipped with multiple mounting holes, which are connected with the inside of ventilation cover.The utility model can blow hot air to the material under the supporting plate when drying material, realize the air guide effect of drying chamber inside to material, and hot air is directly blown to the top of material to be dried, which is beneficial to the drying treatment of material, and is beneficial to the uniform drying of material, and hot air is directly blown to the top of material to be dried, which is directly effective on material, improves drying effect and drying efficiency.

Description

Technical Field

[0001] This utility model relates to the field of drying oven technology, specifically to an internally ventilated and heated drying oven. Background Technology

[0002] A drying oven is a device that removes moisture from materials through heating and air circulation. It is widely used in industries, laboratories, and food processing. Its core function is to control temperature, humidity, and airflow to rapidly dry materials.

[0003] Existing drying ovens typically employ a simple hot air circulation method, generating hot air through heating elements and using a fan to circulate the hot air within the oven. However, this method of drying materials by circulating hot air within the oven has the following drawbacks in practical use:

[0004] 1. Uneven hot air distribution: The hot air circulation path is relatively simple, which can easily lead to inconsistent temperatures in different parts of the chamber, affecting the uniform drying of materials;

[0005] 2. Low drying efficiency: Hot air cannot be accurately directed to the surface of the material to be dried, and some hot air may only circulate in the empty space inside the chamber, failing to effectively act on the material, resulting in a longer drying time. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides an internally ventilated heated drying oven, which solves the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An internally ventilated heating drying oven includes a drying oven body, a control area on the outer wall of the drying oven body, a drying chamber on the side of the drying oven body located in the control area, an integrally formed ventilation hood on the bottom wall of the drying chamber, a number of ventilation holes connected to the interior of the ventilation hood on the top of the ventilation hood, a cavity on the side of the drying chamber away from the control area inside the drying oven body, a number of mounting holes connected to the interior of the ventilation hood on the inner bottom wall of the cavity, and an exhaust fan fixedly installed in the mounting holes.

[0009] Support units are installed on both inner walls of the drying chamber. Each support unit includes support blocks that are fixedly installed on the inner wall of the drying chamber in a vertical linear array. The spacing between each pair of adjacent support blocks is equal, and they form a slot. A tray is inserted into the four slots on the same horizontal plane. The top of the tray has multiple through holes in a horizontal linear array. A connecting cavity is formed inside the tray. An air inlet connected to the connecting cavity is formed on the side of the tray near the cavity. Several exhaust holes connected to the connecting cavity are formed on the bottom of the tray. An air outlet connected to the cavity is formed on the inner wall of the drying chamber near the cavity and between two symmetrical slots. When the tray is inserted into the four slots on the same horizontal plane, the tray and the inner wall of the drying chamber fit together, and the air inlet and the air outlet are connected.

[0010] A hinge shaft is fixedly installed on the inner wall of the drying chamber near the cavity and above the air outlet. A sealing plate that can block or unblock the air outlet is hinged to the hinge shaft. A limiting member that acts on the sealing plate is installed on the inner wall of the drying chamber near the cavity. It is used to limit the sealing plate so that the sealing plate blocks the air outlet.

[0011] Furthermore: the limiting component includes a connecting shaft fixedly installed on the inner wall of the drying chamber near the cavity and located below the air outlet. A limiting plate is rotatably connected to the connecting shaft. A limiting groove is opened at the bottom of the sealing plate. The free end of the limiting plate can extend into the limiting groove, and the cross section between the limiting plate and the inner side wall of the limiting groove is in contact.

[0012] Furthermore: a damping sleeve is fixedly sleeved on the outer side wall of the connecting shaft and symmetrically opposite to the limiting plate, and the damping sleeve abuts against the limiting plate.

[0013] Furthermore, a driving element is installed on the hinge shaft to act on the sealing plate, which is used to rotate the sealing plate around the hinge shaft to a horizontal position, so as to cancel the sealing plate's blockage of the air outlet.

[0014] Furthermore: the driving element is a coil spring.

[0015] Furthermore, a sealing element acting on the tray is installed on the inner wall of the drying chamber and on the outer side of the air outlet. When the tray is inserted into the four insertion slots on the same horizontal plane, the sealing element abuts against the side wall of the tray and on the outer periphery of the air inlet.

[0016] Furthermore: the sealing element is an annular sealing gasket, and an annular sealing cavity is provided on the inner side wall of the drying cavity and on the outer side of the air outlet. The annular sealing gasket is inserted into the annular sealing cavity and abuts against the inner wall of the annular sealing cavity. When the tray is inserted into the four insertion slots located on the same horizontal plane, the annular sealing gasket abuts against the side wall of the tray and on the outer periphery of the air inlet.

[0017] This invention provides an internally heated drying oven with airflow. Compared with the prior art, it has the following advantages:

[0018] 1. When drying materials, hot air can be blown onto the materials to be dried located below the pallet, achieving the effect of guiding air from inside the drying chamber to the material. The hot air is blown directly to the top of the material to be dried, which is beneficial to the drying process and the uniform drying of the material. Furthermore, the hot air blown directly to the top of the material to be dried effectively acts on the material, improving the drying effect and efficiency.

[0019] 2. Through the design of the damping sleeve, the damping sleeve is fixedly sleeved on the outside of the connecting shaft and abuts against the limiting plate, thereby increasing the friction between the limiting plate and the connecting shaft and effectively preventing the limiting plate from rotating naturally outside the connecting shaft.

[0020] 3. Through the design of the sealing element, when the tray is inserted into the four insertion slots located on the same horizontal plane, the sealing element abuts against the side wall of the tray and is located on the outer periphery of the air inlet, thereby effectively ensuring that the gas flows more completely from the air outlet to the air inlet. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A three-dimensional structural schematic diagram of the present invention is shown;

[0023] Figure 2 A schematic diagram of the installation structure of the ventilation hood of this utility model is shown;

[0024] Figure 3 This utility model illustrates Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4 A schematic diagram of the installation structure of the support block of this utility model is shown;

[0026] Figure 5 This utility model illustrates Figure 4 Enlarged view of point B in the middle;

[0027] Figure 6 A schematic diagram of the structure of the tray of this utility model is shown;

[0028] Figure 7 An exploded view of the limiting component of this utility model is shown;

[0029] The figure shows: 1. Drying oven body; 11. Control area; 12. Drying chamber; 121. Annular sealing chamber; 13. Ventilation hood; 131. Ventilation hole; 14. Cavity; 15. Mounting hole; 16. Exhaust fan; 17. Air outlet; 2. Support block; 21. Insertion groove; 3. Support plate; 31. Through hole; 32. Connecting cavity; 33. Air inlet; 34. Exhaust hole; 4. Hinge shaft; 41. Sealing plate; 411. Limiting groove; 5. Limiting component; 51. Connecting shaft; 511. Damping sleeve; 52. Limiting plate; 6. Driving component; 7. Sealing component; 71. Annular sealing gasket. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0031] Example

[0032] To address the technical problems in the background section, the following internally heated drying oven is provided:

[0033] Combination Figures 1-7As shown, the present invention provides an internally ventilated heated drying oven, including a drying oven body 1, model DHG-9030A. The outer wall of the drying oven body 1 has a control area 11. A drying chamber 12 is formed on the drying oven body 1 and located on one side of the control area 11. An integrally formed ventilation hood 13 is formed on the bottom wall of the drying chamber 12. The top of the ventilation hood 13 has several ventilation holes 131 communicating with its interior. A cavity 14 is formed inside the drying oven body 1 and on the side of the drying chamber 12 away from the control area 11. The inner bottom wall of the cavity 14 has several mounting holes 15 communicating with the interior of the ventilation hood 13. In this embodiment, the lower part of the cavity 14 is connected to the drying chamber 1. There is a gap between the inner bottom wall and the end of the ventilation hood 13 extends into the gap. The top of the end of the ventilation hood 13 that extends into the gap is provided with a ventilation opening. Multiple mounting holes 15 are connected to the ventilation opening. An exhaust fan 16 is fixedly installed in the mounting hole 15. Specifically, the drying chamber body 1 is provided with an electric heating blower. A control panel is installed on the control area 11. The electric heating blower is controlled by the control panel. The air outlet of the electric heating blower is connected to the inside of the ventilation hood 13. The drying chamber body 1 is provided with a door for sealing or unsealing the drying chamber 12. The installation structure of the door and the electric heating blower are existing technologies and are known to those skilled in the art. They will not be described in detail here.

[0034] Support units are installed on both inner walls of the drying chamber 12. Each support unit includes support blocks 2 fixedly mounted in a vertical linear array on the inner wall of the drying chamber 12. The spacing between any two adjacent support blocks 2 is equal, and insertion slots 21 are formed between adjacent support blocks 2. A tray 3 is inserted into four insertion slots 21 located on the same horizontal plane. Multiple through holes 31 are formed in a horizontal linear array on the top of the tray 3. A communicating cavity 32 is formed inside the tray 3. The tray 3 is close to the cavity 14. An air inlet 33 connected to the connecting cavity 32 is provided on one side, and several exhaust holes 34 connected to the connecting cavity 32 are provided at the bottom of the support plate 3. An air outlet 17 connected to the interior of the cavity 14 is provided on the inner wall of the drying cavity 12 near the cavity 14 and between two symmetrical insertion slots 21. When the support plate 3 is inserted into the four insertion slots 21 located on the same horizontal plane, the cross section between the support plate 3 and the inner wall of the drying cavity 12 is in contact, and the air inlet 33 is connected to the air outlet 17.

[0035] A hinge shaft 4 is fixedly installed on the inner wall of the drying chamber 12 near the cavity 14 and above the air outlet 17. A sealing plate 41 is hinged to the hinge shaft 4, which can block or unblock the air outlet 17. A limiting member 5 is installed on the inner wall of the drying chamber 12 near the cavity 14, which acts on the sealing plate 41 to limit the sealing plate 41 so that the sealing plate 41 blocks the air outlet 17.

[0036] In use, according to the volume of the material to be dried, insert the pallet 3 into the four insertion slots 21 located on the same horizontal plane, ensuring that the distance between two adjacent pallets 3 is greater than the height of the material to be dried. When inserting the pallet 3, position the air inlet 33 on one side of the pallet 3 closer to the air outlet 17. Remove the limiting member 5 from the sealing plate 41, allowing the sealing plate 41 to rotate around the hinge shaft 4, positioning the sealing plate 41 above the air outlet 17. Then, insert the pallet 3 into the four insertion slots 21 located on the same horizontal plane. The four insertion slots 21 on the top are used to insert the tray 3 into the inner wall of the drying chamber 12. At this time, the cross-section between the tray 3 and the inner wall of the drying chamber 12 is in contact, and the air inlet 33 is connected to the air outlet 17. After the tray 3 is inserted and the material to be dried is loaded, the door is closed, and the electric heating blower is controlled to work through the control panel of the control area 11 to deliver hot air into the ventilation hood 13. The hot air is discharged into the drying chamber 12 through the ventilation hole 131 at the top of the ventilation hood 13 to dry the material. During this period, multiple exhaust fans 16 are turned on, and multiple When the exhaust fan 16 operates, it delivers hot air from the ventilation hood 13 into the cavity 14, and then through the air outlet 17 and air inlet 33 into the connecting cavity 32. The hot air is then discharged downwards through multiple exhaust holes 34 at the bottom of the tray 3, blowing onto the material to be dried below the tray 3. This achieves a guiding airflow effect from inside the drying chamber 12 to the material, with the hot air directly blowing onto the top of the material to be dried, which is beneficial for the drying process and ensures uniform drying. Furthermore, the direct blowing of the hot air onto the top of the material effectively and directly affects the material, improving the drying effect and efficiency. The design of the sealing plate 41 and the limiting member 5 allows the sealing plate 41 to block other air outlets 17, and the limiting member 5 to limit the sealing plate 41, effectively preventing airflow from blowing onto the sealing plate 41 and causing it to rotate around the hinge shaft 4, thus preventing the airflow from being discharged through other air outlets 17.

[0037] Combination Figures 1-7 As shown, the limiting member 5 includes a connecting shaft 51 fixedly installed on the inner wall of the drying chamber 12 near the cavity 14 and below the air outlet 17. A limiting plate 52 is rotatably connected to the connecting shaft 51. A limiting groove 411 is opened at the bottom of the sealing plate 41. The free end of the limiting plate 52 can extend into the limiting groove 411, and the cross section between the limiting plate 52 and the inner side wall of the limiting groove 411 is in contact. In use, when the air outlet 17 on the inner side wall of the drying chamber 12 is not in use, the sealing plate 41 is rotated around the hinge shaft 4 to fit against the inner side wall of the drying chamber 12 to block the air outlet 17. At this time, the limiting groove 411 is located at the bottom of the sealing plate 41. At this time, the operator can manually rotate the limiting plate 52 so that its end extends into the limiting groove 411. The cross section between the limiting plate 52 and the inner side wall of the limiting groove 411 is in contact, thereby achieving the limiting effect of the sealing plate 41. The operation is simple.

[0038] Combination Figures 1-7 As shown, a damping sleeve 511 is fixedly sleeved on the outer wall of the connecting shaft 51 and symmetrically opposite to the limiting plate 52. The damping sleeve 511 is made of rubber ring and abuts against the limiting plate 52. Through the design of the damping sleeve 511, the damping sleeve 511 is fixedly sleeved on the outside of the connecting shaft 51 and abuts against the limiting plate 52, thereby increasing the friction between the limiting plate 52 and the connecting shaft 51, and effectively preventing the limiting plate 52 from rotating naturally outside the connecting shaft 51.

[0039] Combination Figures 1-7 As shown, a driving member 6 is installed on the hinge shaft 4, which acts on the sealing plate 41. This member causes the sealing plate 41 to rotate around the hinge shaft 4 to a horizontal position. Specifically, when the sealing plate 41 is horizontal, it is positioned above the insertion slot 21, thus canceling the sealing of the air outlet 17. The driving member 6 is a coil spring. Specifically, a fixed shaft is fixed on the hinge shaft 4, and the sealing plate 41 is sleeved outside the fixed shaft and hinged to the hinge shaft 4. The spring sleeve is located on the outside of the fixed shaft, and the two ends of the coil spring are fixedly connected to the fixed shaft and the sealing plate 41 respectively. Through the design of the driving component 6, when the sealing plate 41 rotates around the hinge shaft 4 to a vertical position to block the air outlet 17, the coil spring deforms. When the limiting component 5 is removed from the sealing plate 41, the coil spring returns to its natural state, so that the sealing plate 41 can rotate around the hinge shaft 4 to a horizontal position, and the sealing plate 41 can be removed from blocking the air outlet 17, which is convenient for use.

[0040] Combination Figures 1-7 As shown, a sealing element 7 acting on the support plate 3 is installed on the inner wall of the drying chamber 12 and on the outer side of the air outlet 17. When the support plate 3 is inserted into the four insertion slots 21 located on the same horizontal plane, the sealing element 7 abuts against the side wall of the support plate 3 and on the outer periphery of the air inlet 33. Through the design of the sealing element 7, when the support plate 3 is inserted into the four insertion slots 21 located on the same horizontal plane, the sealing element 7 abuts against the side wall of the support plate 3 and on the outer periphery of the air inlet 33, thereby effectively ensuring that the gas flows more completely from the air outlet 17 into the air inlet 33.

[0041] Combination Figures 1-7As shown, the sealing element 7 is an annular sealing gasket 71, which is made of rubber. An annular sealing cavity 121 is provided on the inner wall of the drying cavity 12 and outside the air outlet 17. The annular sealing gasket 71 is inserted into the annular sealing cavity 121 and abuts against the inner wall of the annular sealing cavity 121. When the support plate 3 is inserted into the four insertion slots 21 located on the same horizontal plane, the annular sealing gasket 71 abuts against the side wall of the support plate 3 and the outer peripheral side of the air inlet 33. In use, when the support plate 3 is inserted into the four insertion slots 21 located on the same horizontal plane, the annular sealing gasket 71 abuts against the side wall of the support plate 3 and the outer peripheral side of the air inlet 33, thereby increasing the fit between the outer peripheral side of the air inlet 33 and the inner wall of the drying cavity 12, and increasing the sealing between the outer peripheral side of the air inlet 33 and the inner wall of the drying cavity 12.

[0042] Working principle and usage process of this utility model:

[0043] First, based on the volume of the material to be dried, insert the pallet 3 into the four insertion slots 21 located on the same horizontal plane, ensuring that the distance between two adjacent pallets 3 is greater than the height of the material to be dried. When inserting the pallet 3, position the air inlet 33 on one side of the pallet 3 closer to the air outlet 17. Manually rotate the limiting plate 52 to move its end to the outside of the limiting slot 411, thus removing the limiting effect on the sealing plate 41. The coil spring returns to its natural state, allowing the sealing plate 41 to rotate around the hinge axis 4 to a horizontal position, thus ensuring the sealing plate 41 is in a horizontal position. 1. The tray 3 is positioned above the outlet 17. Then, the tray 3 is inserted into the four insertion slots 21 located on the same horizontal plane. At this time, the tray 3 and the inner wall of the drying chamber 12 are in contact with each other, and the inlet 33 is connected to the outlet 17. At this time, the annular sealing gasket 71 is in contact with the side wall of the tray 3 and located on the outer periphery of the inlet 33, which increases the sealing between the outer periphery of the inlet 33 and the inner wall of the drying chamber 12, thereby effectively ensuring that the gas flows more completely from the outlet 17 to the inlet 33.

[0044] The second step involves installing the pallet 3 and feeding the material to be dried. After the pallet 3 is installed and the material is fed, the door is closed, and the electric heating blower is controlled via the control panel in the control area 11 to deliver hot air into the ventilation hood 13. The hot air is then discharged into the drying chamber 12 through the ventilation holes 131 at the top of the ventilation hood 13 to dry the material. During this process, multiple exhaust fans 16 are turned on, delivering the hot air from the ventilation hood 13 to the cavity 14. The hot air is then delivered to the connecting cavity 32 through the air outlet 17 and the air inlet 33, and then discharged downwards through the multiple exhaust holes 34 at the bottom of the pallet 3. This hot air is blown onto the material to be dried below the pallet 3, achieving a guiding effect from the inside of the drying chamber 12 to the material. The hot air is directly blown onto the top of the material to be dried, which is beneficial for the drying process and for the uniform drying of the material. Furthermore, the hot air is directly blown onto the top of the material to be dried, effectively acting on the material directly and improving the drying effect and efficiency.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0046] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An internally heated drying oven, characterized in that: The device includes a drying oven body, an outer wall of which has a control area, a drying chamber on the side of the drying oven body located in the control area, an integrally formed ventilation hood on the bottom wall of the drying chamber, a number of ventilation holes on the top of the ventilation hood that are connected to its interior, a cavity on the side of the drying chamber away from the control area inside the drying oven body, a number of mounting holes on the inner bottom wall of the cavity that are connected to the interior of the ventilation hood, and an exhaust fan fixedly installed in the mounting holes. Support units are installed on both inner walls of the drying chamber. Each support unit includes support blocks that are fixedly installed on the inner wall of the drying chamber in a vertical linear array. The spacing between each pair of adjacent support blocks is equal, and they form a slot. A tray is inserted into the four slots on the same horizontal plane. The top of the tray has multiple through holes in a horizontal linear array. A connecting cavity is formed inside the tray. An air inlet connected to the connecting cavity is formed on the side of the tray near the cavity. Several exhaust holes connected to the connecting cavity are formed on the bottom of the tray. An air outlet connected to the cavity is formed on the inner wall of the drying chamber near the cavity and between two symmetrical slots. When the tray is inserted into the four slots on the same horizontal plane, the tray and the inner wall of the drying chamber fit together, and the air inlet and the air outlet are connected. A hinge shaft is fixedly installed on the inner wall of the drying chamber near the cavity and above the air outlet. A sealing plate that can block or unblock the air outlet is hinged to the hinge shaft. A limiting member that acts on the sealing plate is installed on the inner wall of the drying chamber near the cavity. It is used to limit the sealing plate so that the sealing plate blocks the air outlet.

2. The internally ventilated heating drying oven according to claim 1, characterized in that: The limiting component includes a connecting shaft fixedly installed on the inner wall of the drying chamber near the cavity and below the air outlet. A limiting plate is rotatably connected to the connecting shaft. A limiting groove is opened at the bottom of the sealing plate. The free end of the limiting plate can extend into the limiting groove, and the cross section between the limiting plate and the inner side wall of the limiting groove is in contact.

3. The internally ventilated heating drying oven according to claim 2, characterized in that: A damping sleeve is fixedly fitted on the outer wall of the connecting shaft and symmetrically opposite to the limiting plate, and the damping sleeve abuts against the limiting plate.

4. The internally ventilated heating drying oven according to claim 1, characterized in that: The hinge shaft is equipped with a driving element that acts on the sealing plate, which is used to rotate the sealing plate around the hinge shaft to a horizontal position, so as to cancel the sealing plate's blockage of the air outlet.

5. The internally ventilated heating drying oven according to claim 4, characterized in that: The driving component is a coil spring.

6. The internally ventilated heating drying oven according to claim 1, characterized in that: A sealing element acting on the tray is installed on the inner wall of the drying chamber and on the outer side of the air outlet. When the tray is inserted into the four insertion slots on the same horizontal plane, the sealing element abuts against the side wall of the tray and on the outer periphery of the air inlet.

7. The internally ventilated heating drying oven according to claim 6, characterized in that: The sealing element is an annular sealing gasket. An annular sealing cavity is provided on the inner side wall of the drying chamber and on the outer side of the air outlet. The annular sealing gasket is inserted into the annular sealing cavity and abuts against the inner wall of the annular sealing cavity. When the tray is inserted into the four insertion slots on the same horizontal plane, the annular sealing gasket abuts against the side wall of the tray and on the outer periphery of the air inlet.

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