A hot air circulation oven

Abstract

This utility model discloses a hot air circulating oven, specifically relating to the field of hot air drying oven technology. It includes an oven body, with a heat exchange box located on the upper exterior of the oven body. Multiple air inlet pipes are located on one side of the upper end of the oven body. A drive motor is located on the upper side of the control box on the outer end face of the oven body. A partition plate is located inside the oven body, and multiple drying air guide slots are formed on the end face of the partition plate. In actual use, by correspondingly arranging the dustproof net, filter plate, heat exchange box, flow divider, and strip air ducts, this utility model can filter external air through the dustproof net, thereby preventing dust from entering the interior of the oven body and thus avoiding contamination of the dried items when dust circulates inside the oven body. Simultaneously, the filter plate is easy to replace, making filter cleaning more convenient.

Description

Technical Field

[0001] This utility model relates to the field of hot air drying oven technology, and more specifically, to a hot air circulating drying oven. Background Technology

[0002] Coffee concentrate and tea concentrate are two different beverage ingredients, mainly differing in their source, flavor characteristics, and usage. Coffee concentrate processing and tea concentrate require a hot air circulation chamber to extract moisture from the coffee concentrate and tea, thereby concentrating them for subsequent processing. For example, patent CN219264744U discloses a hot air circulation oven. The control structure includes a screw and a guide rod located within the oven, and a motor for controlling the screw's rotation. Both the screw and guide rod are arranged along the direction of movement of the baffle, i.e., the height direction of the oven. The screw and guide rod are arranged relatively parallel and spaced apart on the horizontal sides of the baffle. A first fixing block cooperating with the screw and a second fixing block cooperating with the guide rod are fixedly connected to the baffle. The first fixing block is threadedly engaged with the screw, and the second fixing block is slidably engaged with the guide rod.

[0003] When the above-mentioned device is in use, the combination of partitions and movable baffles effectively improves the drying effect when there is a large amount of material, ensuring that the material in each layer is dried evenly and preventing large differences in the drying of the same batch of material due to uneven drying. However, when the air inside the oven exchanges with the outside air, the cold air outside suddenly enters the oven and can easily cause the temperature inside the oven to drop sharply, causing the moisture inside the oven to condense and affecting the drying efficiency of the items. At the same time, dust in the outside air can also easily enter the oven and contaminate the dried items. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a hot air circulating oven. The technical problem to be solved by the present invention is: how to reduce the efficiency of the hot air drying oven while preventing external dust from entering the interior of the oven.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a hot air circulating oven, comprising an oven body, a heat exchange box provided on the outside of the upper end of the oven body, a plurality of air inlet pipes provided on one side of the upper end of the oven body, a drive motor provided on the upper side of the control box on the outer end face of the oven body, a partition plate provided inside the oven body, and a plurality of drying air guide grooves opened on the end face of the partition plate. The oven body has multiple air outlet pipes on the side away from the air inlet pipe at the upper end. Both ends of the heat exchange box are provided with strip-shaped air slots. The heat exchange box is provided with a flow divider plate inside. The heat exchange box is provided with a filter plate at the end near the air outlet pipe. The filter plate is provided with a dustproof net in the middle.

[0006] In a preferred embodiment, the lower end of the oven body is provided with a plurality of support blocks, and a sealed door is provided on one side of the outer end face of the oven body. The connection between the sealed door and the oven body is provided with a plurality of movable hinges.

[0007] In a preferred embodiment, a control box is provided on one side of the outer end face of the oven body, and a gas moisture detector is provided on the rear side of the control box on the end face of the oven body.

[0008] In a preferred embodiment, heat exchange fins are provided on the upper side of the inner end face of the oven body.

[0009] In a preferred embodiment, multiple electric heating rods are provided through the end face of the heat exchange fins, and control valves are provided on the outer side of the end face of the air outlet pipe and the air inlet pipe.

[0010] In a preferred embodiment, the output shaft of the drive motor extends through the interior of the oven body, and an axial fan is provided inside the oven body on the output shaft of the drive motor.

[0011] In a preferred embodiment, the oven body and the heat exchange box are connected by an air inlet pipe and an air outlet pipe, and the drive motor, gas moisture detector, electric heating rod and control valve are all electrically connected to the control box through wires.

[0012] In a preferred embodiment, the diverter plate is S-shaped when viewed from above, and the lower end of the diverter plate is connected to the air outlet pipe and the air inlet pipe respectively. A strong magnetic sheet is installed on one side of the filter plate.

[0013] In a preferred embodiment, the control box is electrically connected to an external power source via a wire, and the gas moisture detector is a commercially available Panametrics HygroProXP moisture detector.

[0014] The technical effects and advantages of this utility model are as follows: In actual use, this utility model, through the corresponding arrangement of dustproof net, filter plate, heat exchange box, diverter plate and strip air duct, can filter the external air through the dustproof net, thereby preventing dust in the external air from entering the interior of the oven body, thus preventing dust from contaminating the dried items when circulating inside the oven body. At the same time, it is more convenient to replace the filter plate and make the filter cleaning more convenient. With the corresponding settings of the diffuser, strip air duct, air inlet pipe, and air outlet pipe, once a certain level of water vapor is generated inside the oven, the control box can activate the control valve to open. Under the continuous operation of the drive motor, external air will enter the heat exchange box from one side, and the air inside the oven will also enter the heat exchange box from the air outlet pipe. The heat exchange box exchanges heat between the air inside and outside the oven, thus preventing external air from suddenly entering the oven and coming into contact with the axial fan. The sudden cooling of the air can easily cause the moisture inside the oven to condense on the surface of the axial fan, which would corrode the axial fan. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This utility model Figure 1 Enlarged view of section A.

[0017] Figure 3 This is a schematic diagram of the overall front view cross-sectional structure of this utility model.

[0018] Figure 4 This is a schematic cross-sectional view of the heat exchanger box of this utility model.

[0019] The attached diagram is labeled as follows: 1 Oven body, 2 Support block, 3 Sealed door, 4 Movable hinge, 5 Control box, 6 Drive motor, 7 Heat exchange box, 8 Air inlet pipe, 9 Divider plate, 10 Drying air guide duct, 11 Gas moisture detector, 12 Dustproof net, 13 Axial flow fan, 14 Control valve, 15 Air outlet pipe, 16 Filter plate, 17 Heat exchange fins, 18 Electric heating rod, 19 Diverter plate, 20 Strip air duct. Detailed Implementation

[0020] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided so that the description of this disclosure will be more complete and fully convey the concept of the exemplary embodiments to those skilled in the art. The drawings are merely illustrative of this disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted.

[0021] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more exemplary embodiments. Numerous specific details are provided in the following description to give a full understanding of exemplary embodiments of this disclosure. However, those skilled in the art will recognize that the technical solutions of this disclosure can be practiced with one or more of the specific details omitted, or other methods, components, steps, etc., can be employed. In other instances, well-known structures, methods, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this disclosure.

[0022] This utility model provides a hot air circulating oven, such as Figure 1 and 2 As shown, it includes an oven body 1, a heat exchange box 7 is provided on the outside of the upper end of the oven body 1, and a plurality of air inlet pipes 8 are provided on one side of the upper end of the oven body 1. The outer end face of the oven body 1 is provided with a drive motor 6 on the upper side of the control box 5. The upper end of the oven body 1 is provided with multiple air outlet pipes 15 on the side away from the air inlet pipe 8. The heat exchange box 7 is provided with a filter plate 16 at the end near the air outlet pipe 15. The filter plate 16 is provided with a dustproof net 12 in the middle, which can isolate dust in the outside air and prevent external dust from entering the interior of the oven body 1. The lower end of the oven body 1 is provided with multiple support blocks 2. A sealed door 3 is provided on one side of the outer end face of the oven body 1. Multiple movable hinges 4 are provided at the connection between the sealed door 3 and the oven body 1. The sealed door 3 can be supported by the movable hinges 4, so that the sealed door 3 can rotate around the movable hinges 4. A control box 5 is provided on one side of the outer end face of the oven body 1. A control valve 14 is provided on the outer side of the end face of the air outlet pipe 15 and the air inlet pipe 8. The control valve 14 can adjust the closure of the air outlet pipe 15 and the air inlet pipe 8. The output shaft of the drive motor 6 passes through the interior of the oven body 1. The oven body 1 and the heat exchange box 7 are connected by an air inlet pipe 8 and an air outlet pipe 15. A strong magnetic sheet is installed on one side of the filter plate 16, which makes it easy to install and remove the filter plate 16, thus making it easier to clean the filter plate. The control box 5 is electrically connected to an external power source through wires.

[0023] like Figure 3 and 4 As shown, the oven body 1 has a partition plate 9 inside, and the end face of the partition plate 9 has a plurality of drying air guide grooves 10. Both ends of the heat exchange box 7 are provided with strip-shaped air grooves 20, and the heat exchange box 7 has a flow divider plate 19 inside. When the air inside the oven body 1 is dehumidified, the water-containing gas inside the oven body 1 will be introduced into the heat exchange box 7 through the air outlet duct 15. At the same time, the outside air will also enter the heat exchange box 7 through the strip air duct 20. The gas inside the heat exchange box 7 will be guided by the diversion plate 19. During the flow, the air will exchange heat inside the diversion plate 19. After the heat exchange is completed, the air will re-enter the oven body 1 through the air inlet duct 8. The oven body 1 is equipped with a gas moisture detector 11 on the rear side of the control box 5. The gas moisture detector 11 can detect the moisture content of the air inside the oven body 1. When the gas moisture detector 11 detects that the moisture content inside the oven body 1 reaches a certain level, it will transmit a signal to the control box 5. The control box 5 will drive the control valve 14 to work, thereby opening the air inlet pipe 8 and the air outlet pipe 15. The upper side of the inner end face of the oven body 1 is provided with heat exchange fins 17. Multiple electric heating rods 18 are provided through the end face of the heat exchange fins 17, which can heat the heat exchange fins 17 through the electric heating rods 18. The output shaft of the drive motor 6 is equipped with an axial fan 13 inside the oven body 1. The drive motor 6, gas moisture detector 11, electric heating rod 18 and control valve 14 are all electrically connected to the control box 5 through wires. When the operator places the items to be dried inside the oven body 1, he closes the sealed door 3, and then the drive motor 6 and electric heating rod 18 can be driven by the control box 5 to work. The drive motor 6 will drive the axial fan 13 to rotate rapidly through the output shaft, and the electric heating rod 18 will heat the heat exchange fins 17, and the temperature of the circulating air will rise rapidly, so that the internal air of the oven body 1 will circulate rapidly, thereby drying the items. The diverter plate 19 is S-shaped when viewed from above. The lower end of the diverter plate 19 is connected to the air outlet pipe 15 and the air inlet pipe 8 respectively. The gas moisture detector 11 is a commercially available Panametrics HygroProXP moisture detector.

[0024] Finally, it should be noted that: the accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other. The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hot air circulating oven, comprising an oven body (1), characterized in that: The oven body (1) has a heat exchange box (7) on the outside of the upper end, and multiple air inlet pipes (8) on one side of the upper end of the oven body (1). The oven body (1) has a drive motor (6) on the upper side of the control box (5) on the outer end face. The oven body (1) has a partition plate (9) inside, and multiple drying air guide grooves (10) are opened on the end face of the partition plate (9). The oven body (1) has multiple air outlet pipes (15) on the side away from the air inlet pipe (8) at the upper end. Both ends of the heat exchange box (7) are provided with strip-shaped air ducts (20). The heat exchange box (7) is provided with a flow divider plate (19) inside. The heat exchange box (7) is provided with a filter plate (16) at the end near the air outlet pipe (15). The filter plate (16) is provided with a dustproof net (12) in the middle.

2. The hot air circulating oven according to claim 1, characterized in that: The lower end of the oven body (1) is provided with multiple support blocks (2), and a sealed door (3) is provided on one side of the outer end face of the oven body (1). Multiple movable hinges (4) are provided at the connection between the sealed door (3) and the oven body (1).

3. A hot air circulating oven according to claim 1, characterized in that: A control box (5) is provided on one side of the outer end face of the oven body (1), and a gas moisture detector (11) is provided on the rear side of the control box (5) on the end face of the oven body (1).

4. A hot air circulating oven according to claim 1, characterized in that: The upper side of the inner end face of the oven body (1) is provided with heat exchange fins (17).

5. A hot air circulating oven according to claim 4, characterized in that: Multiple electric heating rods (18) are provided through the end face of the heat exchange fins (17), and control valves (14) are provided on the outer side of the end face of the air outlet pipe (15) and the air inlet pipe (8).

6. A hot air circulating oven according to claim 1, characterized in that: The output shaft of the drive motor (6) extends through the interior of the oven body (1), and an axial fan (13) is provided inside the oven body (1) on the output shaft of the drive motor (6).

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