Hot air circulation structure of drying oven

Abstract

The utility model discloses a hot air circulation structure of a drying oven. The hot air circulation structure comprises the drying oven, a fan and an air deflector group, the drying oven is provided with a drying cavity, the air deflector set is arranged around the drying cavity, the fan is installed at the top end of the drying cavity, and the fan is connected with the air deflector set to supply airflow to the air deflector set. The air deflector group comprises a left end air inlet and a right end air inlet, the fan comprises a nitrogen input port and an exhaust port, and the exhaust port is connected with the left end air inlet to supply airflow to the air deflector group; the whole air guide plate set is annular, nozzles are obliquely arranged along the air guide plate set, airflow in the air guide plate set is discharged into the drying cavity through the nozzles, and circulating airflow is formed through cooperation of the nozzles of the annular air guide plate set. The device has the advantages of simple structure, compact matching, reasonable design and the like; therefore, the device is a product with excellent technical and economical performance.

Description

TECHNICAL FIELD

[0001] The utility model mainly relates to a hot air circulation structure of oven. BACKGROUND

[0002] The nitrogen oven is an advanced drying technology equipment, which is mainly applied to the industrial production which needs to be dried in the oxygen-free or low-oxygen environment. This technology fills nitrogen into the oven, effectively removes oxygen and moisture in the air, and thus realizes efficient and non-oxidizing drying of the product. The existing nitrogen oven generally does not set up hot air circulation, which will cause the oven to need a longer time to reach and maintain the required temperature, resulting in an increase in energy consumption. In view of this, we have developed a hot air circulation structure of oven. UTILITY MODEL CONTENTS

[0003] In order to solve at least one of the above problems, the utility model provides a new structure scheme, and the hot air circulation structure of oven adopts the following technical scheme:

[0004] A hot air circulation structure of oven, which comprises an oven, a fan and a guide plate group.

[0005] The oven has an oven cavity, the guide plate group is arranged around the oven cavity, the fan is installed at the top end of the oven cavity, and the fan is connected with the guide plate group to supply airflow to the guide plate group.

[0006] The guide plate group comprises a left end air inlet and a right end air inlet, the fan comprises a nitrogen inlet and an exhaust port, and the exhaust port is connected with the left end air inlet to supply airflow to the guide plate group.

[0007] The guide plate group is annular as a whole, and the guide plate group is obliquely provided with a plurality of nozzles, the airflow in the guide plate group is discharged into the oven cavity through the nozzles, and the nozzles of the annular guide plate group cooperate to form a circulating airflow.

[0008] Preferably, the guide plate group is provided with an empty position, and the exhaust port is connected with the left end air inlet by extending into the empty position.

[0009] Preferably, the right end air inlet is gradually narrowed and obliquely extended to below the left end air inlet.

[0010] Preferably, the fan is horizontally arranged at the top end of the oven cavity, and the exhaust port is connected with the left end air inlet through a duct.

[0011] Preferably, the guide plate group is provided with a threaded hole, the oven is provided with a material supporting plate, the material plate is arranged in the guide plate group and connected with the threaded hole through a screw, so as to fix the material supporting plate in the guide plate group.

[0012] The utility model has the beneficial effects compared with the background art:

[0013] Adopt this structure will make the air flow of the exhaust baffle group according to the shape of the baffle group to form a circulating air flow, and the hot air circulation can make the temperature distribution in the oven more uniform, avoiding local overheating or underheating. Hot air circulation can accelerate the flow of nitrogen in the oven, thereby improving the drying efficiency. As an inert gas, nitrogen is not easy to react with other substances, and through hot air circulation, it can quickly remove the moisture on the surface of the goods, shorten the drying time. It has the advantages of simple structure, compact combination, reasonable design and the like; therefore, it is a product with superior performance in both technology and economy. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The hot air circulation structure of the oven in the preferred embodiment provided by the utility model is shown in the schematic view.

[0015] Figure 2 The circulating air flow of the baffle group in the preferred embodiment provided by the utility model is shown in the schematic view. DETAILED DESCRIPTION

[0016] The embodiments of the utility model will be described in detail below, and the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout.

[0017] In the utility model, unless otherwise specified and limited, the terms such as “assembly”, “connection” and “connection” should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, or mechanically connected, or directly connected, or connected through an intermediate medium, or connected between two elements. For ordinary skilled persons in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0018] The technical scheme of the utility model and its beneficial effects will be clearer and more explicit by further describing the specific embodiments of the utility model in combination with the drawings of the specification. The embodiments described below by referring to the drawings are exemplary, and are intended to explain the utility model, and cannot be understood as a limitation of the utility model.

[0019] The preferred embodiment provided by the utility model is as follows: Figure 1 As shown in Figure 2 The hot air circulation structure of an oven, which comprises an oven 1, a fan 2 and a baffle group 3; the oven 1 has an oven cavity 11, the baffle group 3 is arranged around the oven cavity 11, the fan 2 is installed at the top end of the oven cavity 11, and the fan 2 is connected with the baffle group 3 to supply air flow to the baffle group 3; the baffle group is a hollow structure to facilitate air guiding, and the fan adopts an existing wind wheel structure.

[0020] The air deflector group 3 comprises a left end air inlet 31 and a right end air inlet 32, the fan 2 comprises a nitrogen input port 21 and an exhaust port 22, the exhaust port 22 is connected with the left end air inlet 31 to supply air flow to the air deflector group 3; nitrogen is sent into the fan 2 from the nitrogen input port 21, and the nitrogen is driven to flow to each part of the air deflector group 3 through the impeller in the fan 2, and is discharged from the nozzle 33; the fan 2 is horizontally arranged at the top end of the drying cavity 11, and the exhaust port 22 is connected to the left end air inlet 31 through the duct 13; due to the limited space of the drying cavity 11, the horizontally arranged fan 2 can effectively reduce the occupation of the vertical space.

[0021] The air deflector group 3 is annular as a whole, and the nozzles 33 are arranged in a slanting manner along the air deflector group 3; the air flow in the air deflector group 3 is discharged into the drying cavity 11 through the nozzles 33, and the circulation air flow is formed by the cooperation of the nozzles 33 of the annular air deflector group 3.

[0022] The air deflector group 3 is provided with an emptying position 34, the exhaust port 22 extends into the emptying position 34 and is connected with the left end air inlet 31, and further, the duct 13 connected with the exhaust port extends into the emptying position, and the overall layout is more beautiful. The right end air inlet 32 is gradually narrowed and extends to below the left end air inlet 31 in a slanting manner.

[0023] The air deflector group 3 is provided with screw holes, the drying cavity 11 is provided with a material supporting plate 12, the material supporting plate 12 is in a fence shape and is convenient for air passing, and the material supporting plate is arranged in the air deflector group 3 and is connected to the screw holes through screws to fix the material supporting plate 12 in the air deflector group 3.

[0024] The structure can make the air flow discharged from the air deflector group form a circulation air flow in cooperation with the shape of the air deflector group, the hot air circulation can make the temperature distribution in the drying oven more uniform, and can avoid local overheating or underheating. The hot air circulation can accelerate the flow of nitrogen in the drying oven, thereby improving the drying efficiency. Nitrogen is an inert gas and is not easy to chemically react with other substances, and through the hot air circulation, the moisture on the surface of the articles can be taken away more quickly, and the drying time is shortened.

[0025] In the description of the specification, the description of the terms "one embodiment", "preferably", "example", "specific example" or "some examples" and the like means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present application, and the illustrative description of the above terms in the specification does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0026] Through the structure and principle described above, those skilled in the art should understand that the utility model is not limited to the specific implementation described above, and improvements and replacements of commonly known technologies in the field on the basis of the utility model all fall within the protection scope of the utility model, which should be limited by each claim.

Claims

1. A hot air circulation structure of an oven, characterized by: It includes an oven, a fan and a guide vane group; The oven has an oven cavity, the guide vane group is arranged around the oven cavity, the fan is installed at the top end of the oven cavity, and the fan is connected with the guide vane group to supply air flow to the guide vane group; The guide vane group includes a left end air inlet and a right end air inlet, the fan includes a nitrogen gas inlet and an exhaust outlet, and the exhaust outlet is connected with the left end air inlet to supply air flow to the guide vane group; The guide vane group is annular as a whole, and the guide vane group is provided with a plurality of nozzles arranged obliquely along the guide vane group, the air flow in the guide vane group is discharged into the oven cavity through the nozzles, and the nozzles of the annular guide vane group cooperate to form a circulating air flow.

2. The hot air circulation structure of an oven according to claim 1, wherein: The guide vane group is provided with a clearance, and the exhaust outlet extends into the clearance and is connected with the left end air inlet.

3. The hot air circulation structure of an oven according to claim 1, wherein: The right end air inlet is gradually narrowed and extends obliquely to below the left end air inlet.

4. The hot air circulation structure of an oven according to claim 1, wherein: The fan is horizontally arranged at the top end of the oven cavity, and the exhaust outlet is connected with the left end air inlet through a duct.

5. The hot air circulation structure of an oven according to claim 1, wherein: The guide vane group is provided with screw holes, the oven cavity is provided with a material supporting plate, the material plate is arranged in the guide vane group and connected with the screw holes through screws to fix the material supporting plate in the guide vane group.

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