Heating oven capable of circulating hot air

Abstract

The utility model discloses a heating oven capable of circulating hot air, and belongs to the technical field of heat treatment equipment. Comprising a main body structure and a circulating pipeline, air enters an air duct through an air inlet and is heated through the interior of a limiting baffle, and heated hot air flows in the direction of an inclined flow guide plate, is sucked upwards by a top air feeder and is sent to an upper cover plate area; hot air is uniformly blown to the surface of a workpiece in the drying oven through the opening in the distribution plate to realize uniform heating, the hot air exchanges heat in the drying oven and then flows into the external circulating pipeline from the side surface, the circulating pipeline guides the recycled hot air back to the side surface opening again, and the hot air enters the heating mechanism to be heated again; a continuous and efficient hot air loop is formed, and the heat energy utilization rate is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of heat treatment equipment technology, and in particular to a hot air circulating heating oven. Background Technology

[0002] Hot air circulating heating ovens are widely used in industry and laboratories, primarily for heating, drying, and baking items. They achieve energy-efficient and high-performance heating by heating and circulating air. The following is some background information on this equipment: Hot air circulating heating ovens typically rely on heating elements (such as electric heaters or hot air generators) to heat air, which is then circulated into the oven interior by a fan. Through the convection of the hot air, items inside the oven are heated or dried evenly. Hot air circulation helps prevent some areas from becoming too hot or too cold, ensuring a consistent temperature inside the oven.

[0003] Most of the heating ovens currently on the market lead to heat waste because hot air is usually directly discharged or cannot be fully reused; therefore, a heating oven with recirculating hot air is proposed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a hot air circulating heating oven.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A hot air circulating heating oven includes a main structure and circulation pipes. Circulation pipes are arranged around both sides of the outer ring of the main structure. The main structure includes an outer shell and a top cover plate installed on the upper end face of the outer shell. A heating mechanism is installed in the inner cavity of the outer shell, and a top blower is installed at the edge of the upper end face of the top cover plate.

[0007] Preferably, the outer casing includes a housing and a central through hole located at the middle of the upper end face of the housing, and a side opening is provided laterally on the side end face of the housing, and the central through hole communicates with the side opening.

[0008] Preferably, the upper cover plate includes a distribution plate and a separating mechanism connected between the two sets of distribution plates, and an opening is formed in the middle of the distribution plate.

[0009] Preferably, the heating mechanism includes an air duct and a limiting baffle installed at one end of the air duct. A return channel is opened laterally on the side end face of the limiting baffle. The other end of the limiting baffle is connected to an inclined guide plate. A guide is installed at the top position of the inclined guide plate. A blocking mechanism is installed vertically on the bottom end face of the inclined guide plate. The outer shell is connected to the side opening through the central through hole to form an airflow channel. The circulation pipe surrounds the outside of the main structure and its interior is connected to the side opening to form a hot air circulation loop.

[0010] Air enters the air duct through the air inlet, is heated inside the limiting baffle, and then flows along the direction of the inclined guide plate. It is then drawn upward by the top blower and sent to the upper cover area. The upper cover distributes the hot air evenly through the partitioning mechanism. The hot air is then blown evenly onto the surface of the workpiece inside the oven through the openings on the distribution plate, achieving uniform heating.

[0011] Preferably, the top blower, air duct, and return channel are opened along the same path. After the hot air exchanges heat inside the oven, it flows into the external circulation pipe from the side. The circulation pipe guides the recovered hot air back to the side opening and into the heating mechanism for reheating. This cycle forms a continuous and efficient hot air loop, which greatly improves the thermal energy utilization rate.

[0012] Preferably, the top blower, air duct, and return channel are arranged in the same path direction to ensure smooth airflow. The inclined guide plate, combined with the upper and lower layout, improves the uniformity of airflow distribution and prevents local overheating or cooling. The guide optimizes the hot air outlet direction, allowing the heated air to flow along a predetermined path, reducing internal turbulence and thus improving the uniformity of airflow inside the oven.

[0013] Preferably, the blocking mechanism is located at the bottom of the inclined guide plate. By partially enclosing the bottom space, it restricts the downward diffusion of airflow, thereby shortening the circulation path of hot air inside the heating module. The airflow is directly controlled to flow upward or laterally, avoiding ineffective detours, improving the efficiency of hot air transmission, and shortening the time for hot air to reach the working area.

[0014] Preferably, the circulation pipe extends through the inner cavity of the side opening, the inner end wall of the circulation pipe is attached to the outer end face of the shell, and the other end of the circulation pipe is connected in series with one end of another set of circulation pipes.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. The outer shell is connected to the side openings through the central through hole to form an airflow channel. The circulation pipes surround the outside of the main structure and are connected to the side openings to form a hot air circulation loop.

[0017] 2. Air enters the air duct through the air inlet, is heated inside the limiting baffle, and the heated air flows along the direction of the inclined guide plate. It is then drawn upward by the top blower and sent to the upper cover area. The upper cover distributes the hot air evenly through the partition mechanism. The hot air is then blown evenly onto the surface of the workpiece inside the oven through the openings on the distribution plate, achieving uniform heating.

[0018] 3. After exchanging heat inside the oven, the hot air flows into the external circulation pipe from the side. The circulation pipe guides the recovered hot air back to the side opening and into the heating mechanism for reheating. This cycle forms a continuous and efficient hot air loop, greatly improving the thermal energy utilization rate.

[0019] 4. The top blower, air duct, and return channel are set in the same path direction to ensure smooth airflow. The inclined guide plate, combined with the upper and lower layout, improves the uniformity of airflow distribution and prevents local overheating or cooling.

[0020] 5. The guide has optimized the direction of hot air output, so that the heated air flows along a predetermined path, reducing internal turbulence and thus improving the uniformity of airflow inside the oven.

[0021] 6. The blocking mechanism is located at the bottom of the inclined guide plate. By partially enclosing the bottom space, it restricts the downward diffusion of airflow, thereby shortening the circulation path of hot air inside the heating module. The airflow is directly controlled to flow upward or laterally, avoiding ineffective detours, improving the efficiency of hot air transmission, and shortening the time for hot air to reach the working area. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of a hot air circulating heating oven proposed in this utility model;

[0023] Figure 2 This is a schematic diagram of the main structure of a hot air circulating heating oven proposed in this utility model;

[0024] Figure 3 This is a schematic diagram of the upper cover structure of a hot air circulating heating oven proposed in this utility model;

[0025] Figure 4 This is a schematic diagram of the heating mechanism of a hot air circulating heating oven proposed in this utility model.

[0026] In the diagram: 1. Main structure; 11. Outer shell; 111. Shell; 112. Central through hole; 113. Side opening; 12. Top cover plate; 121. Distribution plate; 122. Dividing mechanism; 123. Opening; 13. Heating mechanism; 131. Air duct; 132. Limiting baffle; 133. Return channel; 134. Inclined guide plate; 135. Guide component; 136. Blocking mechanism; 14. Top blower; 2. Circulation pipe. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Reference Figures 1-4 A hot air circulating heating oven includes a main structure 1 and a circulation pipe 2. The circulation pipe 2 is arranged around the outer ring of the main structure 1. The main structure 1 includes an outer shell 11 and an upper cover plate 12 installed on the upper end face of the outer shell 11. A heating mechanism 13 is installed in the inner cavity of the outer shell 11. A top blower 14 is installed at the edge of the upper end face of the upper cover plate 12.

[0029] The outer casing 11 includes a housing 111 and a central through hole 112 located at the middle of the upper end face of the housing 111. A side opening 113 is laterally opened on the side end face of the housing 111, and the central through hole 112 communicates with the side opening 113.

[0030] The upper cover plate 12 includes a distribution plate 121 and a partition mechanism 122 connected between two sets of distribution plates 121. An opening 123 is opened in the middle of the distribution plate 121. The heating mechanism 13 includes an air duct 131 and a limiting baffle 132 installed at one end of the air duct 131. A return channel 133 is opened laterally on the side end face of the limiting baffle 132. The other end of the limiting baffle 132 is connected to an inclined guide plate 134. A guide 135 is installed at the top of the inclined guide plate 134. A blocking mechanism 136 is installed vertically on the bottom end face of the inclined guide plate 134. The outer shell 11 is connected to the side opening 113 through a central through hole 112 to form an airflow channel. The circulation pipe 2 surrounds the outside of the main structure 1 and its interior is connected to the side opening 113 to form a hot air circulation loop.

[0031] Air enters the air duct 131 through the air inlet, is heated inside the limiting baffle 132, and the heated air flows along the inclined guide plate 134. It is then drawn upward by the top blower 14 and sent to the area of ​​the upper cover plate 12. The upper cover plate 12 distributes the hot air evenly through the dividing mechanism 122. The hot air is then blown evenly onto the surface of the workpiece inside the oven through the opening 123 on the distribution plate 121, achieving uniform heating.

[0032] The top blower 14, the air duct 131 and the return channel 133 are opened in the same path. After the hot air exchanges heat inside the oven, it flows into the external circulation pipe 2 from the side. The circulation pipe 2 guides the recovered hot air back to the side opening 113 and enters the heating mechanism 13 for reheating. This cycle forms a continuous and efficient hot air loop, which greatly improves the thermal energy utilization rate.

[0033] The top blower 14, air duct 131 and return channel 133 are set in the same path direction to ensure smooth airflow. The inclined guide plate 134, in conjunction with the upper and lower layout, improves the uniformity of airflow distribution and prevents local overheating or cooling. The guide 135 optimizes the hot air outlet direction, so that the heated air flows along a predetermined path, reducing internal turbulence and thus improving the uniformity of airflow inside the oven.

[0034] The blocking mechanism 136 is located at the bottom of the inclined guide plate 134. By partially enclosing the bottom space, it restricts the downward diffusion of airflow, thereby shortening the circulation path of hot air inside the heating module. The airflow is directly controlled to flow upward or laterally, avoiding ineffective detours, improving the efficiency of hot air transmission, and shortening the time for hot air to reach the working area.

[0035] The circulation pipe 2 is inserted through the inner cavity of the side opening 113. The inner end wall of the circulation pipe 2 is attached to the outer end face of the shell 111. The other end of the circulation pipe 2 is connected in series with one end of another set of circulation pipes 2.

[0036] In summary: the outer shell 11 is connected to the side opening 113 through the central through hole 112 to form an airflow channel, and the circulation pipe 2 surrounds the outside of the main structure 1, and its interior is connected to the side opening 113 to form a hot air circulation loop.

[0037] Air enters the air duct 131 through the air inlet, is heated inside the limiting baffle 132, and the heated air flows along the inclined guide plate 134. It is then drawn upward by the top blower 14 and sent to the area of ​​the upper cover plate 12. The upper cover plate 12 distributes the hot air evenly through the dividing mechanism 122. The hot air is then blown evenly onto the surface of the workpiece inside the oven through the opening 123 on the distribution plate 121, achieving uniform heating.

[0038] After exchanging heat inside the oven, the hot air flows into the external circulation pipe 2 from the side. The circulation pipe 2 guides the recovered hot air back to the side opening 113 and into the heating mechanism 13 for reheating. This cycle forms a continuous and efficient hot air loop, which greatly improves the utilization rate of thermal energy.

[0039] The top blower 14, air duct 131 and return channel 133 are set in the same path direction to ensure smooth airflow. The inclined guide plate 134, in conjunction with the upper and lower layout, improves the uniformity of airflow distribution and prevents local overheating or cooling.

[0040] The guide 135 optimizes the hot air outlet direction, allowing the heated air to flow along a predetermined path, reducing internal turbulence and thus improving the airflow uniformity inside the oven.

[0041] The blocking mechanism 136 is located at the bottom of the inclined guide plate 134. By partially enclosing the bottom space, it restricts the downward diffusion of airflow, thereby shortening the circulation path of hot air inside the heating module. The airflow is directly controlled to flow upward or laterally, avoiding ineffective detours, improving the efficiency of hot air transmission, and shortening the time for hot air to reach the working area.

[0042] The above is the complete working principle of this utility model.

[0043] In this utility model, the installation, connection or setting methods of all the components mentioned above are common mechanical methods, and the specific structure, model and coefficient index of all the components are their own technologies. As long as they can achieve their beneficial effects, they can be implemented, so they will not be described in detail.

[0044] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

[0045] In this utility model, unless otherwise stated, directional terms such as "up, down, left, right, front, back, inside, outside, and vertical and horizontal" in the terminology only represent the orientation of the term in its conventional use or are common names understood by those skilled in the art, and should not be regarded as limitations on the term. At the same time, numerals such as "first," "second," and "third" do not represent specific quantities or orders, but are only used to distinguish names. Moreover, 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 series of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

Claims

1. A hot air recyclable heating oven comprising a main body structure (1) and a circulation duct (2), the circulation duct (2) being provided around both sides of the outer circumference of the main body structure (1), characterized in that, Said main body structure (1) includes an outer shell (11) and an upper cover plate (12) installed on the upper end face of the outer shell (11), the inner cavity of the outer shell (11) is installed with a heating mechanism (13), and the upper end face edge position of the upper cover plate (12) is installed with a top air blower (14).

2. The hot-air recirculating heating oven according to claim 1, characterized in that Said outer shell (11) includes a shell body (111) and a middle through hole (112) opened in the middle position of the upper end face of the shell body (111), and the side end face of the shell body (111) is transversely opened with a side opening (113), and the middle through hole (112) is communicated with the side opening (113).

3. The hot air recirculating oven of claim 1, wherein, Said upper cover plate (12) includes a distribution plate (121) and a partition mechanism (122) connected at the interval between two groups of distribution plates (121), and the middle position of the distribution plate (121) is opened with an opening (123).

4. The hot air recirculating oven of claim 1, wherein, Said heating mechanism (13) includes an air duct (131) and a limiting baffle (132) installed at one end of the air duct (131), the side end face of the limiting baffle (132) is transversely opened with a backflow channel (133), the other end of the limiting baffle (132) is connected with an inclined flow guide plate (134) arranged obliquely, the top position of the inclined flow guide plate (134) is installed with a guide (135), and the bottom end face of the inclined flow guide plate (134) is vertically installed with a blocking mechanism (136).

5. The hot air recirculating oven of claim 1, wherein, Said top air blower (14), air duct (131) and backflow channel (133) are opened in the same path.

6. The hot air recirculating oven of claim 1, wherein, Said circulating pipeline (2) is inserted through the inner cavity of the side opening (113), the inner end wall of the circulating pipeline (2) is attached to the outer end face of the shell body (111), and the other end of the circulating pipeline (2) is connected in series with the one end of the other group of circulating pipelines (2).

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