Electrothermal blowing drying box

Abstract

The utility model relates to an electrothermal blowing drying box, and belongs to the technical field of electrothermal blowing drying equipment. The device comprises a box body, a heating piece and a flow guide piece, a containing cavity is formed in the box body, one end of the containing cavity is open, a box door is arranged on one side of the box body and used for closing or opening the opening of the containing cavity, the containing cavity is used for containing a sample box, and a ventilation opening is formed in the first side wall of the containing cavity; the heating piece is connected with the box body, and the output end of the heating piece is connected with the ventilation opening so that hot air of the heating piece can be blown into the containing cavity. The flow guide part comprises a baffle and a plurality of supporting rods, the first ends of the supporting rods are evenly distributed in the circumferential direction of the baffle, the second ends of the supporting rods are connected with the side wall of the ventilation opening, the axis of the baffle coincides with the axis of the ventilation opening, the diameter of the baffle is smaller than that of the ventilation opening, and a gap is reserved between the circumferential direction of the baffle and the ventilation opening. Hot air blown out of the ventilation opening is dispersed. The problem that wind power of the ventilation openings of the drying box is too concentrated is solved.

Description

Technical Field

[0001] This application relates to the field of electric heating air drying equipment technology, and in particular to an electric heating air drying oven. Background Technology

[0002] Electric heating drying ovens are widely used in the chemical, pharmaceutical, and food industries, primarily for drying and dehydrating samples. These devices use a blower to pump hot air into the drying chamber, thereby accelerating the evaporation of moisture from the samples.

[0003] Currently, existing electric heating drying ovens typically have a vent on the side wall so that the hot air blown in by the blower can be blown into the drying oven through the vent.

[0004] However, samples are usually placed in the drying oven using lightweight aluminum foil trays. The hot air blown in through the vents is concentrated and can easily form a single airflow with strong blowing force, causing the aluminum foil trays to be blown over. This not only affects the integrity of the samples but also causes contamination inside the drying oven.

[0005] The aforementioned technologies have the drawback of excessively concentrated airflow at the air vents of the drying oven. Utility Model Content

[0006] To address the issue of excessively concentrated airflow at the ventilation openings of drying ovens, this application provides an electrically heated forced-air drying oven.

[0007] The electrically heated forced-air drying oven provided in this application adopts the following technical solution:

[0008] An electric heating drying oven includes: a box body with a receiving cavity inside, one end of which is open, and a door on one side of the box body for closing or opening the opening of the receiving cavity. The receiving cavity is used to place a sample box, and a vent is provided on the first side wall of the receiving cavity; a heating element connected to the box body, with its output end connected to the vent, allowing hot air from the heating element to be blown into the receiving cavity; and a flow guide including a baffle and several support rods, the first ends of which are evenly distributed around the circumference of the baffle, the second ends of which are connected to the side wall of the vent, the axis of the baffle coinciding with the axis of the vent, the diameter of the baffle being smaller than the diameter of the vent, and a gap between the circumference of the baffle and the side wall of the vent to disperse the hot air blown out by the vent.

[0009] By adopting the above technical solution, the containment cavity inside the chamber is used to contain the sample and provide a heating space for the sample. The chamber door is used to allow the containment cavity to be relatively open for sample placement or relatively closed for sample heating. The output end of the heating element is connected to the vent, so that hot air can be blown into the containment cavity. Since the vent is equipped with a baffle and several support rods, the hot air can only flow out through the gap between the vent and the baffle, thus dispersing the hot air reaching the vent. At the same time, since the axis of the baffle coincides with the axis of the vent, the flow direction of the hot air output from the vent is different, which helps to reduce the concentration of airflow, reduce the risk of blowing over the sample, and improve the uniformity of hot air in the containment cavity, thus optimizing the heating effect on the sample.

[0010] Optionally, the first sidewall of the receiving cavity is provided with multiple rows of ventilation openings, each row including multiple ventilation openings, and multiple flow guides are provided, with the flow guides corresponding to the ventilation openings.

[0011] By adopting the above technical solution, multiple ventilation openings are provided, which helps to improve the dispersion of hot air and enhance the uniformity of heating; at the same time, each ventilation opening is equipped with a guide, which can further reduce the possibility of excessive concentration of hot air flow.

[0012] Optionally, the second sidewall of the receiving cavity is provided with multiple rows of ventilation openings, each row including multiple ventilation openings. The second sidewall is provided with a number of flow guides, which are correspondingly arranged with the ventilation openings. The second sidewall is arranged opposite to the first sidewall, and the ventilation openings on the first sidewall and the ventilation openings on the second sidewall are horizontally offset.

[0013] By adopting the above technical solution, multiple ventilation openings are provided on both the first and second sidewalls, which helps to improve heating efficiency; and the ventilation openings on the first and second sidewalls are staggered in the horizontal direction, which can reduce the turbulence caused by airflow collision and thus reduce the impact on the sample, thereby improving the stability of the sample in the containment cavity.

[0014] Optionally, it also includes a support plate, with slide rails provided on both the first and second side walls. The slide rails extend horizontally in a direction perpendicular to the door of the box, and the support plate is slidably connected to the slide rails. The support plate is used to support the sample box.

[0015] By adopting the above technical solution, the slide rail extends horizontally and the support plate is slidably connected to the slide rail, which can improve the reliability of the support plate being pushed into the receiving cavity, reduce the difficulty of operation, alleviate the risk of the support plate deflecting during the sliding process, and improve the reliability of supporting the sample box.

[0016] Optionally, the third sidewall of the receiving cavity is disposed opposite to the box door, the first end of the slide rail away from the box door is spaced apart from the third sidewall, and the first end of the slide rail is provided with a limiting part, which is used to restrict the movement of the support plate.

[0017] By adopting the above technical solution, the slide rail is spaced apart from the third side wall, and the slide rail is equipped with a limiting part, which can reduce the risk of the support plate hitting the third side wall. This not only improves the stability of sample bearing, but also helps the hot air to flow along the third side wall, thereby improving the uniformity of sample heating.

[0018] Optionally, the slide rails are provided in a plurality of manners, which are distributed at intervals along the vertical direction. Multiple rows of ventilation openings correspond to the slide rails, and each row of ventilation openings extends along the length of the slide rail, so that each row of ventilation openings is located on the lower side of the slide rail.

[0019] By adopting the above technical solution, multiple slide rails can support multiple support plates, thereby improving heating efficiency; at the same time, it is easy to adjust the height of the support plates to meet usage needs; since hot air moves upward, placing the ventilation opening on the lower side of the slide rail can improve heating efficiency.

[0020] Optionally, a flexible pad is provided on the inner side of the door, which can abut against the end of the support plate near the second end of the support plate.

[0021] By adopting the above technical solution, after the support plate is placed into the slide rail and the box door is closed, the flexible pad can abut against the end of the support plate, improving the stability of the support plate and thus improving the stability of the sample box in the receiving cavity; in addition, the flexible pad can reduce the impact force on the support plate and improve reliability.

[0022] Optionally, the outer periphery of the receiving cavity is provided with a cavity, the output end of the heating element is connected to the cavity, and the vent is connected to the cavity, so that the hot air output by the heating element is transported to the vent through the cavity.

[0023] By adopting the above technical solution, the connection between the heating element and the ventilation opening is achieved through a cavity. On the one hand, this helps to improve the uniformity of heating and make the heat from different ventilation openings more even. On the other hand, the cavity surrounding the cavity and the hot air permeating the cavity can achieve the effect of heat preservation of the cavity and improve the heating efficiency.

[0024] Optionally, the heating element is located on the side of the housing near the third side wall, and the first side wall and the second side wall are symmetrically located on both sides of the heating element.

[0025] By adopting the above technical solution, it is helpful to make the heat obtained by the vents on the first and second side walls more even, and reduce the possibility of uneven heating in the cavity.

[0026] Optionally, the housing is provided with an exhaust port, which is connected to the receiving cavity, and the exhaust port is provided with a one-way valve.

[0027] By adopting the above technical solution, the setting of exhaust port and one-way valve can allow the gas in the containment cavity to be discharged, avoiding excessive pressure in the containment cavity and causing safety hazards.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. The chamber inside the box is used to hold the sample and provide a heating space for the sample. The door is used to open the chamber to put in or take out the sample or to close it to heat the sample. The output end of the heating element is connected to the vent, so that hot air can be blown into the chamber. Since the vent is equipped with a baffle and several support rods, the hot air can only flow out through the gap between the vent and the baffle, so that the hot air reaching the vent is dispersed. At the same time, since the axis of the baffle is coincident with the axis of the vent, the flow direction of the hot air output from the vent is different, which helps to reduce the concentration of airflow, reduce the risk of blowing over the sample, and improve the uniformity of hot air in the chamber, thus optimizing the heating effect on the sample.

[0030] 2. Multiple vents are provided, which helps to improve the dispersion of hot air and enhance the uniformity of heating; at the same time, each vent is equipped with a guide, which can further reduce the possibility of excessive concentration of hot air flow.

[0031] 3. Multiple ventilation openings are provided on the first and second sidewalls respectively, which helps to improve heating efficiency; and the ventilation openings on the first and second sidewalls are staggered in the horizontal direction, which can reduce the turbulence caused by airflow collision and thus reduce the impact on the sample, thereby improving the stability of the sample in the cavity. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of an electric heating forced-air drying oven according to an embodiment of this application.

[0033] Figure 2 This is a top view of the electric heating drying oven according to an embodiment of this application.

[0034] Figure 3 yes Figure 2 Cross-sectional view at point AA.

[0035] Figure 4 This is a schematic diagram of the interior of an electric heating drying oven according to an embodiment of this application.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Box body; 11. Receiving cavity; 111. First side wall; 112. Second side wall; 113. Third side wall; 12. Box door; 121. Flexible pad; 13. Ventilation opening; 14. Cavity; 15. Exhaust port; 2. Heating element; 31. Baffle; 32. Support rod; 4. Slide rail; 41. Limiting part. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1 -Appendix Figure 4 This application will be further described in detail below. In this embodiment, unless otherwise specified, "connection", "linking", and "fixing" are interpreted broadly, including fixed connection, detachable connection, connection to form an integral structure, mechanical connection, electrical connection, direct connection, indirect connection through an intermediary, internal connection, and interaction between two components, etc., and can be understood according to the specific circumstances.

[0039] In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, in the description of this embodiment, terms such as "above," "below," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings, and are used only for ease of description and simplification of operation, not to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise stated, directional terms such as "inner" and "outer" used in this application refer to the outline of the corresponding component itself.

[0040] like Figure 1 , Figure 2 and Figure 3 As shown in the figure, this application discloses an electric heating drying oven (hereinafter referred to as "drying oven"), which includes a box body 1, a heating element 2 and a flow guide element.

[0041] like Figure 1 , Figure 3 and Figure 4 As shown, the housing 1 has a receiving cavity 11, which is open at one end and has three circumferential side walls: a first side wall 111, a second side wall 112, and a third side wall 113. A door 12 is provided on one side of the housing 1, used to close or open the opening of the receiving cavity 11. The receiving cavity 11 is used to hold sample boxes, and the first side wall 111 of the receiving cavity 11 has a vent 13. The receiving cavity 11 inside the housing 1 is used to hold samples and provide heating space for the samples. The door 12 is used to open the opening of the receiving cavity 11 to remove or place samples, or to close it to heat the samples. A heating element 2 is connected to the housing 1, and the output end of the heating element 2 is connected to the vent 13, allowing hot air from the heating element 2 to be blown into the receiving cavity 11.

[0042] like Figure 1 , Figure 3 and Figure 4 As shown, the guide includes a baffle 31 and several support rods 32. The first ends of the support rods 32 are evenly distributed around the circumference of the baffle 31, and the second ends of the support rods 32 are connected to the sidewall of the vent 13. In this embodiment, both the vent 13 and the baffle 31 have circular longitudinal sections. The axis of the baffle 31 coincides with the axis of the vent 13, and the diameter of the baffle 31 is smaller than the diameter of the vent 13. This creates multiple gaps between the circumference of the baffle 31 and the sidewall of the vent 13, allowing the hot air blown out of the vent 13 to exit through these gaps, thus dispersing the hot air blown out of a single vent 13. Because the vent 13 is equipped with a baffle 31 and several support rods 32, hot air can only flow out through the gaps between the vent 13 and the baffle 31, thereby dispersing the hot air reaching the vent 13. Meanwhile, since the axis of the baffle 31 coincides with the axis of the vent 13, the flow direction of the hot air output from different gaps of the same vent 13 differs. This helps to reduce airflow concentration, lower the risk of blowing over the sample, and improve the uniformity of hot air within the receiving cavity 11, thus optimizing the heating effect on the sample in the sample box. Preferably, the diameter of the baffle 31 is greater than 1 / 4 of the longitudinal section diameter of the vent 13.

[0043] Optionally, the housing 1 is provided with an exhaust port 15, which is connected to the receiving cavity 11, and the exhaust port 15 is equipped with a one-way valve. The exhaust port 15 and the one-way valve enable the gas in the receiving cavity 11 to be discharged, avoiding excessive pressure in the receiving cavity 11 and causing safety hazards.

[0044] like Figure 1 , Figure 3 and Figure 4 As shown, optionally, the first sidewall 111 of the receiving cavity 11 is provided with multiple rows of vents 13, each row including multiple vents 13. Multiple guide elements are provided, corresponding to the vents 13. Having multiple vents 13 helps to improve the dispersion of hot air and enhance heating uniformity. At the same time, each vent 13 is provided with a guide element, which can further reduce the possibility of excessively concentrated hot airflow.

[0045] Optionally, the second sidewall 112 of the receiving cavity 11 is provided with multiple rows of ventilation openings 13, each row including multiple ventilation openings 13. The second sidewall 112 of the receiving cavity 11 is provided with several flow guides, which are correspondingly arranged with the ventilation openings 13. The second sidewall 112 is arranged opposite to the first sidewall 111, and the ventilation openings 13 on the first sidewall 111 and the ventilation openings 13 on the second sidewall 112 are horizontally offset. The fact that both the opposing first sidewall 111 and second sidewall 112 are provided with multiple ventilation openings 13 helps to improve heating efficiency. Furthermore, the horizontally offset arrangement of the ventilation openings 13 on the first sidewall 111 and the second sidewall 112 can reduce excessive turbulence caused by airflow collision and thus reduce the impact on the sample box, improving the stability of the sample within the receiving cavity 11.

[0046] like Figure 1 , Figure 3 and Figure 4 As shown, optionally, the drying oven also includes a support plate (not shown in the figure). Slide rails 4 are provided on both the first sidewall 111 and the second sidewall 112 of the receiving cavity 11. The length of the slide rails 4 extends horizontally in a direction perpendicular to the door 12. The support plate is slidably connected to the slide rails 4 and is used to support the sample box. The horizontal extension of the slide rails 4 and the slidable connection between the support plate and the slide rails 4 improve the reliability of pushing the support plate into the receiving cavity 11, reduce the difficulty of operation, mitigate the risk of the support plate deflecting during sliding, and improve the reliability of supporting the sample box.

[0047] Optionally, the third sidewall 113 of the receiving cavity 11 is disposed opposite to the door 12, and the first end of the slide rail 4 away from the door 12 is horizontally spaced from the third sidewall 113 of the receiving cavity 11. The first end of the slide rail 4 is provided with a limiting part 41, which restricts the movement of the support plate. The slide rail 4 is spaced apart from the third sidewall 113, and the limiting part 41 on the slide rail 4 reduces the risk of the support plate impacting the third sidewall 113. This not only improves the stability of sample bearing but also helps hot air flow along the third sidewall 113, improving the uniformity of sample heating. The limiting part 41 can be a block structure used to prevent the support plate from sliding out of the slide rail 4 and impacting the third sidewall 113.

[0048] like Figure 1 , Figure 3 and Figure 4As shown, optionally, a flexible pad 121 is provided on the inner side of the door 12, which abuts against the end of the support plate near the second end of the support plate. In the horizontal direction, the sum of the lengths of the support plate and the stop block is equal to the length of the slide rail 4. After the support plate is pushed into the slide rail 4, closing the door 12 allows the flexible pad 121 to abut against the end of the support plate, improving the stability of the support plate and thus improving the stability of the sample box within the receiving cavity 11. Furthermore, the flexible pad 121 reduces the impact force on the support plate, improving reliability; it also helps improve the sealing of the door 12 to the receiving cavity 11. The flexible pad 121 can be made of rubber, with a thickness sufficient to abut against the support plate on the slide rail 4 after the door 12 is closed.

[0049] Optionally, several slide rails 4 are provided, and these slide rails 4 are distributed at intervals along the vertical direction. Each row of vents 13 corresponds to one slide rail 4, and each row of vents 13 extends along the length of the slide rail 4, so that each row of vents 13 is located on the lower side of the corresponding slide rail 4. Multiple slide rails 4 can support multiple support plates, improving heating efficiency; at the same time, it is easy to adjust the height of the support plates by placing a single support plate on slide rails 4 at different heights to meet usage needs; since hot air moves upward, placing the vents 13 on the lower side of the slide rail 4 and offsetting the rows of vents 13 between two support plates, that is, making the rows of vents 13 closer to their corresponding upper slide rail 4, allows hot air to get closer to the lower surface of the upper support plate, improving heating efficiency and reducing the risk of the sample box being blown over.

[0050] like Figure 1 , Figure 3 and Figure 4 As shown, optionally, a cavity 14 is provided on the outer periphery of the receiving cavity 11. The output end of the heating element 2 is connected to the cavity 14, and the vent 13 is connected to the cavity 14, so that the hot air output by the heating element 2 is delivered to the vent 13 through the cavity 14. Using the cavity 14 to connect the heating element 2 and the vent 13 helps to improve the uniformity of heating, making the heat from different vents 13 more even. Furthermore, the cavity 14, which is fitted around the outer periphery of the side wall of the receiving cavity 11, and the hot air diffused within the cavity 14, can achieve a heat preservation effect on the receiving cavity 11, improving heating efficiency. The heating element 2 can be a heating element such as a resistance wire combined with an air supply structure such as a blower. Heat is generated through the resistance wire, and the outlet of the blower is connected to the cavity 14, allowing the blower to blow hot air into the cavity 14. Since there is already relevant technology for the heating element 2, it will not be described in detail here; existing heating elements and air supply structures can be selected as needed. The heating element 2 is located on the side of the housing 1 near the third side wall 113. The first side wall 111 and the second side wall 112 are symmetrically arranged on both sides of the heating element 2, which helps to make the heat obtained by the vents 13 on the first side wall 111 and the second side wall 112 even and reduce the possibility of uneven heating in the cavity 11.

[0051] It is understandable that the drying oven also includes necessary structures for connection, support, drive, positioning, limiting, sealing, power supply and control, so that the drying oven can operate normally; the shape, size, material and quantity of each part of the drying oven can be determined as needed, as long as the corresponding functions can be achieved.

[0052] The implementation principle of an electric heating drying oven according to an embodiment of this application is as follows: the receiving cavity 11 inside the oven body 1 provides a heating space for the sample. The oven door 12 is opened to place the sample into the receiving cavity 11, and then the oven door 12 is closed to make the receiving cavity 11 relatively closed for heating the sample. The output end of the heating element 2 is connected to the vent 13 to blow hot air into the receiving cavity 11. Since the vent 13 is provided with a baffle 31 and several support rods 32, the hot air can only flow out through the gap between the vent 13 and the baffle 31, thereby dispersing the hot air reaching the vent 13. At the same time, since the axis of the baffle 31 coincides with the axis of the vent 13, the flow direction of the hot air output from the vent 13 is different, which helps to reduce the concentration of airflow, reduce the risk of blowing over the sample box, and improve the uniformity of hot air in the receiving cavity 11, thus optimizing the heating effect on the sample.

[0053] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An electrically heated forced-air drying oven, characterized in that, include: The box (1) has a receiving cavity (11) inside, one end of the receiving cavity (11) is open, and a box door (12) is provided on one side of the box (1). The box door (12) is used to close or open the opening of the receiving cavity (11). The receiving cavity (11) is used to place a sample box. The first side wall (111) of the receiving cavity (11) is provided with a ventilation opening (13). Heating element (2), the heating element (2) is connected to the housing (1), and the output end of the heating element (2) is connected to the vent (13) so that the hot air from the heating element (2) can be blown into the receiving cavity (11); The guide includes a baffle (31) and a plurality of support rods (32). The first ends of the plurality of support rods (32) are evenly distributed around the baffle (31). The second ends of the support rods (32) are connected to the side wall of the vent (13). The axis of the baffle (31) coincides with the axis of the vent (13). The diameter of the baffle (31) is smaller than the diameter of the vent (13). A gap is left between the circumference of the baffle (31) and the side wall of the vent (13) to disperse the hot air blown out of the vent (13).

2. The electric heating forced-air drying oven according to claim 1, characterized in that, The first sidewall (111) of the receiving cavity (11) is provided with multiple rows of ventilation openings (13), each row including multiple ventilation openings (13), and multiple flow guides are provided, the flow guides being arranged corresponding to the ventilation openings (13).

3. The electric heating forced-air drying oven according to claim 2, characterized in that, The second sidewall (112) of the receiving cavity (11) is provided with multiple rows of ventilation openings (13), each row including multiple ventilation openings (13). The second sidewall (112) is provided with several guide members, which are correspondingly arranged with the ventilation openings (13). The second sidewall (112) is arranged opposite to the first sidewall (111). The ventilation openings (13) on the first sidewall (111) and the ventilation openings (13) on the second sidewall (112) are staggered in the horizontal direction.

4. The electric heating forced-air drying oven according to claim 3, characterized in that, It also includes a support plate, and both the first side wall (111) and the second side wall (112) are provided with slide rails (4). The slide rails (4) extend horizontally in a direction perpendicular to the box door (12). The support plate is slidably connected to the slide rails (4). The support plate is used to support the sample box.

5. The electric heating forced-air drying oven according to claim 4, characterized in that, The third sidewall (113) of the receiving cavity (11) is disposed opposite to the box door (12), and the first end of the slide rail (4) away from the box door (12) is spaced apart from the third sidewall (113). The first end of the slide rail (4) is provided with a limiting part (41), which is used to restrict the movement of the support plate.

6. The electric heating forced-air drying oven according to claim 5, characterized in that, The slide rails (4) are provided in a plurality of them, and the plurality of slide rails (4) are distributed at intervals along the vertical direction. The rows of ventilation openings (13) correspond to the slide rails (4), and each row of ventilation openings (13) extends along the length of the slide rails (4), so that each row of ventilation openings (13) is located on the lower side of the corresponding slide rail (4).

7. The electric heating forced-air drying oven according to claim 5, characterized in that, The inner side of the box door (12) is provided with a flexible pad (121), which can abut against the end of the support plate near the second end of the support plate.

8. The electric heating forced-air drying oven according to claim 1, characterized in that, The outer periphery of the receiving cavity (11) is provided with a cavity (14), the output end of the heating element (2) is connected to the cavity (14), and the vent (13) is connected to the cavity (14), so that the hot air output by the heating element (2) is transported to the vent (13) through the cavity (14).

9. The electric heating forced-air drying oven according to claim 5, characterized in that, The heating element (2) is located on the side of the housing (1) near the third side wall (113), and the first side wall (111) and the second side wall (112) are symmetrically located on both sides of the heating element (2).

10. The electric heating forced-air drying oven according to claim 1, characterized in that, The housing (1) is provided with an exhaust port (15), which is connected to the receiving cavity (11), and the exhaust port (15) is provided with a one-way valve.

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