An electric heating constant temperature drying oven

Abstract

The utility model relates to an electric heating constant temperature drying box, including box, door, be provided with drying room, return air passage, air supply passage in the box, and the left and right sides of drying room install two parallel support strips before and after respectively, install a plurality of groups of vibration from top to bottom in proper order arrange vibration shelf on support strip, be provided with a plurality of pieces of vertical downward and left and right parallel air deflector on vibration shelf, and the bottom end of air deflector reduces from the left and right sides of vibration shelf to the middle piece by piece. Advantageous effect is: when hot air current blows on air deflector, on one hand, make air deflector and vibration support vibrate, can make the container and article vibration of placing on vibration support, let the article accumulation form in container change, promote the uniformity of article heat drying, on the other hand, air deflector imports hot air current into container downward, is favorable to hot air current and the article in container full contact carries out heat exchange.

Description

Technical Field

[0001] This utility model relates to the field of electric heating drying equipment, and in particular to an electric heating constant temperature drying oven. Background Technology

[0002] An electric thermostatic drying oven is a device used for drying items, mainly in research and development experiments and product inspection.

[0003] In existing electric thermostatic drying ovens, items are placed statically in containers on the shelves inside. This results in rapid drying of the surface and areas in contact with the container, while the center dries slowly, leading to poor drying uniformity. Furthermore, because the items are typically contained within containers, the container walls obstruct the flow of hot air, hindering heat exchange between the items and the airflow. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned problems in the existing technology and provide an electric heating constant temperature drying oven.

[0005] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution:

[0006] An electric heating constant temperature drying oven includes a box body and a door. One side of the door is hinged to the box body. The box body is provided with a drying chamber, a return air duct, and a supply air duct. The top of the return air duct is connected to the top of the drying chamber. A fan and an electric heater are installed between the bottom of the return air duct and the bottom of the supply air duct. Multiple air inlets are opened on the left and right sides of the drying chamber. The supply air duct is connected to the drying chamber through the air inlets. Two parallel support bars are installed on the left and right sides of the drying chamber. Multiple sets of vibrating shelves are installed on the support bars, arranged sequentially from top to bottom. Several vertically downward and horizontally parallel air guide vanes are provided on the vibrating shelves, and the bottom ends of the air guide vanes gradually decrease from the left and right sides of the vibrating shelves towards the middle.

[0007] The vibrating shelf includes two sets of symmetrically arranged clamping mechanisms, compression springs, and a rectangular storage net. Two vertically upward-pointing semi-threaded screws are fixed to the top of the clamping mechanism. Two through-holes are opened on the left and right sides of the storage net. The top of the semi-threaded screws passes through the holes from bottom to top. A compression spring is fitted on each semi-threaded screw and clamped between the clamping mechanism and the storage net. A limiting nut is screwed to the top threaded section of the semi-threaded screw. The air guide plate is fixed to the storage net.

[0008] The clamping mechanism includes a rectangular support plate, two fixed clamping blocks, two movable clamping blocks, and a bidirectional screw. The semi-threaded screw is vertically welded to the top of the support plate. The two fixed clamping blocks are respectively welded to the bottom ends of the two ends of the support plate. Each fixed clamping block has a through-hole. The two ends of the bidirectional screw are rotatably installed in the through-hole. Each movable clamping block has a screw hole. The two ends of the bidirectional screw are screwed into the screw holes on the two movable clamping blocks. Each movable clamping block cooperates with the adjacent fixed clamping block to clamp the support bar.

[0009] Preferably, a non-slip rubber sheet is attached to the side of the movable clamp near the support bar.

[0010] Preferably, the top perimeter of the storage net is provided with an upwardly extending flange.

[0011] The air inlet is elongated.

[0012] Preferably, the top of the air inlet is provided with a guide plate extending into the air supply channel.

[0013] Preferably, the back of the housing has a vent that communicates with the return air duct, and a dust cover is installed in the vent.

[0014] The beneficial effects of this utility model are as follows: Two parallel support bars are installed on the left and right sides of the drying chamber, and multiple sets of vibrating shelves are installed on the support bars. Air guides are set on the vibrating shelves. When the hot air blows onto the air guides, it causes the air guides and the vibrating supports to vibrate, which in turn causes the containers and items placed on the vibrating supports to vibrate, changing the stacking shape of the items in the containers and promoting the uniformity of the drying of the items. On the other hand, the air guides the hot air downward into the containers, which is conducive to the hot air coming into full contact with the items in the containers for heat exchange. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the structure of the electric heating constant temperature drying oven in this utility model, viewed from the side front with the door open.

[0017] Figure 2 This is a schematic diagram of the electric heating constant temperature drying oven in this utility model, viewed from the front side with the door closed.

[0018] Figure 3This is a schematic diagram of the electric heating constant temperature drying oven in this utility model, viewed from the side and rear with the door closed.

[0019] Figure 4 This is a schematic diagram of the structure of the electric heating constant temperature drying oven in this utility model, which is viewed from the rear side after being cut open.

[0020] Figure 5 This is a schematic diagram of the vibrating shelf of this utility model as viewed from the side front;

[0021] Figure 6 This is a schematic diagram of the structure of the vibrating shelf in this utility model as viewed from the front;

[0022] Figure 7 This is a schematic diagram of the structure of the clamping mechanism and the semi-threaded screw in this utility model;

[0023] Figure 8 This is an exploded view of the clamping mechanism in this utility model;

[0024] Figure 9 This is a schematic diagram of the structure of the storage net in this utility model;

[0025] The following are the labels in the diagram: 1. Box body, 11. Lock hole, 12. Drying chamber, 13. Return air duct, 14. Air supply duct, 15. Fan, 16. Electric heater, 17. Electronic thermometer, 18. Temperature controller, 19. Blower switch, 110. Power switch, 111. Vent, 111. Dust cover, 112. Air inlet, 113. Guide plate, 114. Box door, 2. Door lock, 21. Lock hook, 211. Hinge, 3. Support bar, 4. Vibrating shelf, 5. Clamping mechanism, 51. Support plate, 511. Fixed clamping block, 512. Shaft hole, 5121. Movable clamping block, 513. Screw hole, 5131. Anti-slip rubber sheet, 5132. Double-acting screw, 514. Hexagonal socket hole, 5141. Compression spring, 52. Storage net, 53. Round hole, 531. Flange, 532. Semi-threaded screw, 54. Limit nut, 55. Air guide plate, 56. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] like Figures 1 to 9 As shown, an electric heating constant temperature drying oven includes a box body 1 and a box door 2. One side of the box door 2 is hinged to the box body 1 via a hinge 3, and a door lock 21 is installed on the other side of the box door 2. The locking hook 211 of the door lock 21 is locked with the lock hole 11 on the box body 1. Rotating the door lock 21 causes the locking hook 211 to be inserted into the lock hole 11 or to be pulled out of the lock hole 11.

[0028] The chamber 1 is equipped with a drying chamber 12, a return air duct 13, and an air supply duct 14. The top of the return air duct 13 is connected to the top of the drying chamber 12. A fan 15 and an electric heater 16 are installed between the bottom of the return air duct 13 and the bottom of the air supply duct 14. An electronic thermometer 17 is installed in the air supply duct 14. A temperature controller 18, a blower switch 19, and a power switch 110 are installed on the bottom front of the chamber. The power switch 110 is connected to the fan 15, the electric heater 16, and the temperature controller 18 by wires. The blower switch 19 is connected to the fan 15 by wires. The temperature controller 18 is connected to the electronic thermometer 17 and the electric heater 16 by wires.

[0029] When the power switch 110 is turned on, the temperature controller 18, the fan 15, and the electric heater 16 are powered on. The drying temperature is adjusted by the temperature controller 18, and the temperature in the air supply channel 14 is monitored by the electronic thermometer 17 and fed back to the temperature controller 18. The temperature controller 18 controls the heating temperature of the electric heater 16. The blower switch 19 is turned on to make the fan work, so that the airflow in the drying chamber 12 passes through the return channel 13 to reach the electric heater for heating. The heated airflow returns to the drying chamber 12 through the air supply channel 14.

[0030] The back of the chamber 1 is provided with a vent 111 that is connected to the return air channel 13. A dust cover 112 is installed in the vent 111. The vent 111 facilitates the air circulation inside and outside the drying chamber, and the dust cover prevents dust in the outside air from entering the chamber.

[0031] Multiple air inlets 113 are provided on the left and right sides of the drying chamber 12. The multiple air inlets 113 are evenly distributed from bottom to top. The air inlets 113 are elongated. The air supply channel 14 is connected to the drying chamber 12 through the air inlets 113. The hot air in the air supply channel 14 enters the drying chamber 12 from the air inlets 113.

[0032] The top of the air inlet 113 is provided with a guide plate 114 extending into the air supply channel 14. The guide plate 114 guides the hot airflow in the air supply channel 14 into the air inlet 113, which is conducive to the hot airflow entering the drying chamber 12 from the air inlets 113 on both sides of the bottom of the drying chamber 12.

[0033] Two parallel support bars 4 are installed on the left and right sides of the drying chamber 12. Multiple sets of vibrating shelves 5 are installed on the support bars 4, arranged from top to bottom. Several vertically downward and horizontally parallel air guides 56 are provided on the vibrating shelves 5, and the bottom of the air guides 56 decreases from the left and right sides of the vibrating shelves 5 towards the middle.

[0034] The vibrating shelf 5 includes two sets of clamping mechanisms 51 arranged symmetrically on the left and right, compression springs 52, and rectangular storage nets 53. The top of the clamping mechanism 51 is fixed with two vertically upward semi-threaded screws 54. Two through-holes 531 are opened on the left and right sides of the storage net 53. The top of the semi-threaded screws 54 passes through the holes 531 from bottom to top. Each semi-threaded screw 54 is fitted with a compression spring 52 that is clamped between the clamping mechanism 51 and the storage net 53. A limiting nut 55 is screwed to the top threaded section of the semi-threaded screw 54. The air guide plate 56 is fixed to the storage net 53.

[0035] When the hot airflow blows onto the air guide plate, it causes the air guide plate and the vibrating support to vibrate, which in turn causes the containers and items placed on the vibrating support to vibrate, changing the stacking shape of the items in the containers and promoting the uniformity of the items being heated and dried. On the other hand, the air guide plate guides the hot airflow downward into the container, which is conducive to the hot airflow coming into full contact with the items in the container for heat exchange.

[0036] The clamping mechanism 51 includes a rectangular support plate 511, two fixed clamping blocks 512, two movable clamping blocks 513, and a bidirectional screw 514. The semi-threaded screw 54 is vertically welded to the top of the support plate 511. The two fixed clamping blocks 512 are respectively welded to the bottom ends of the two ends of the support plate 511. Each fixed clamping block 512 has a through shaft hole 5121. The two ends of the bidirectional screw 514 are rotatably installed in the shaft hole 5121. Each movable clamping block 513 has a screw hole 5131. The two ends of the bidirectional screw 514 are screwed into the screw holes 5131 on the two movable clamping blocks 513 respectively. Each movable clamping block 513 cooperates with the adjacent fixed clamping block 512 to clamp the support bar 4.

[0037] The end of the double-ended screw 514 facing the door is provided with an internal hexagonal hole 5141. By inserting one end of an internal hexagonal wrench into the internal hexagonal hole 5141 and rotating the double-ended screw 514, the two movable clamping blocks 513 are moved simultaneously toward the support bar 4, so that the movable clamping blocks 513 and the fixed clamping block 512 cooperate to clamp the support bar 4; or the two movable clamping blocks 513 are moved simultaneously away from the support bar 4, so that the movable clamping blocks 513 and the fixed clamping block 512 cooperate to release the support bar 4.

[0038] A non-slip rubber sheet 5132 is attached to the side of the movable clamping block 513 near the support bar 4. The non-slip rubber sheet 5132 increases the friction between the movable clamping block 513 and the support bar 4, preventing the movable clamping block 513 from sliding down the support bar 4 when it is clamped by the fixed clamping block 512.

[0039] The top of the storage net 53 is provided with an upwardly extending flange 532 around its perimeter. The flange 532 prevents the container placed on the storage net from slipping off when it vibrates.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An electrically heated constant temperature drying oven, comprising a chamber body and a door, wherein one side of the door is hinged to the chamber body via a hinge, characterized in that: The housing includes a drying chamber, a return air duct, and a supply air duct. The top of the return air duct is connected to the top of the drying chamber, and a fan and an electric heater are installed between the bottom of the return air duct and the bottom of the supply air duct. Multiple air inlets are provided on the left and right sides of the drying chamber, and the supply air duct is connected to the drying chamber through the air inlets. Two parallel support bars are installed on the left and right sides of the drying chamber, and multiple sets of vibrating shelves are installed on the support bars, arranged sequentially from top to bottom. Several vertically downward and horizontally parallel air guide vanes are provided on the vibrating shelves, and the bottom of the air guide vanes decreases from the left and right sides of the vibrating shelves towards the middle.

2. The electric thermostatic drying oven according to claim 1, characterized in that: The vibrating shelf includes two sets of symmetrically arranged clamping mechanisms, compression springs, and a rectangular storage net. Two vertically upward-pointing semi-threaded screws are fixed to the top of the clamping mechanism. Two through-holes are opened on the left and right sides of the storage net. The top of the semi-threaded screws passes through the holes from bottom to top. A compression spring is fitted on each semi-threaded screw, clamping between the clamping mechanism and the storage net. A limiting nut is screwed to the top threaded section of the semi-threaded screw. The air guide plate is fixed to the storage net.

3. The electric thermostatic drying oven according to claim 2, characterized in that: The clamping mechanism includes a rectangular support plate, two fixed clamping blocks, two movable clamping blocks, and a bidirectional screw. The semi-threaded screw is vertically welded to the top of the support plate. The two fixed clamping blocks are respectively welded to the bottom ends of the two ends of the support plate. Each fixed clamping block has a through-hole. The two ends of the bidirectional screw are rotatably installed in the through-hole. Each movable clamping block has a screw hole. The two ends of the bidirectional screw are screwed into the screw holes on the two movable clamping blocks. Each movable clamping block cooperates with the adjacent fixed clamping block to clamp the support bar.

4. The electric thermostatic drying oven according to claim 3, characterized in that: A non-slip rubber sheet is attached to the side of the movable clamp near the support bar.

5. The electric thermostatic drying oven according to claim 2, characterized in that: The top edge of the storage net is provided with an upward-extending flange.

6. The electric thermostatic drying oven according to claim 1, characterized in that: The air inlet is elongated.

7. The electric thermostatic drying oven according to claim 1, characterized in that: The top of the air inlet is provided with a guide plate that extends into the air supply channel.

8. The electric thermostatic drying oven according to claim 1, characterized in that: The back of the enclosure has a ventilation hole that communicates with the return air duct, and a dust cover is installed in the ventilation hole.

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