Hot air circulating oven

Abstract

The utility model relates to the technical field of annular drying ovens, and discloses a hot air circulating drying oven which comprises a drying oven body. The air guide assembly comprises a circulating pipe, a lateral air inlet pipe, a fan assembly, an air guide plate and fins, the circulating pipe is fixedly connected with the drying box body, openings are formed in the two ends of the circulating pipe, the lateral air inlet pipe is fixedly connected and communicated with the circulating pipe, and the fan assembly is arranged at one opening of the circulating pipe; two air deflectors are fixedly installed on the inner wall of the drying box body, a plurality of fins are fixedly connected between the two air deflectors, air is sucked into a circulating pipe through a fan assembly and exhausted from openings below the air deflectors to achieve air circulation, the air is guided through the air deflectors, and the air circulation efficiency is improved. Air is accelerated when passing through the funnel-shaped channel formed between the two air deflectors, the fins are matched, high-flow-speed air makes contact with the fins and the thermocouple, the contact area of the air and the thermocouple is increased, the air flow speed is increased, the accelerating effect is good, and the efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of circular ovens, in particular to a hot air circulation oven. Background Art

[0002] When producing biopharmaceuticals, experimental testing is required. For experimental equipment, a drying oven is needed to dry the equipment.

[0003] The prior art discloses a purification hot air circulation oven (publication number: CN220981754U), comprising: an oven body and an air inlet pipe connected to a drying chamber in the oven body, an air supply mechanism installed in the air inlet pipe, an air outlet pipe connected to the air inlet pipe provided on the drying chamber, when air is supplied, the air flow circulates in the drying chamber through the air inlet pipe and the air outlet pipe, and a heating mechanism for heating the air flow is installed in the air inlet pipe, the oven body is sequentially equipped with an inner liner and a shell from the inside to the outside, the drying chamber is formed in the inner liner, and the drying chamber is formed in the inner liner.

[0004] In the existing technology, hot air circulation is achieved through pipes and fans. When the air passes through the pipe opening, it is heated by the electric heating rod. When the air flows through the opening, the contact area with the electric heating rod is limited, which limits the heating effect of the electric heating rod on the air and affects the rapid heating of the air. There is a certain room for optimization in the way of heating the air.

[0005] For this purpose, we propose a hot air circulation oven. Utility Model Content

[0006] The utility model mainly solves the technical problem of unsatisfactory air heating effect and provides a hot air circulation oven.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solution, a hot air circulation oven, comprising:

[0008] The drying box body has an open box structure, and a sealed door is hinged at the opening of the drying box body;

[0009] An air guide assembly is provided in the cavity of the drying box body for guiding air flow, the air guide assembly comprising a circulation pipe, a lateral air inlet pipe, a fan assembly, an air guide plate and fins. The circulation pipe is fixedly connected to the drying box body, has openings at both ends of the circulation pipe, and the lateral air inlet pipe is fixedly connected and communicates with the circulation pipe. The fan assembly is provided at one of the openings of the circulation pipe. Two air guide plates are fixedly mounted on the inner wall of the drying box body, and a plurality of fins are fixedly connected between the two air guide plates. The wall surface of the fin is provided with a thermocouple. The fan assembly can inhale air from the opening of the circulation pipe or the lateral air inlet pipe and discharge it from the position where the air guide plate is located.

[0010] The regulating assembly is arranged at the port of the side air intake pipe and is used to control the opening and closing of the side air intake pipe.

[0011] As a preferred embodiment of the present invention, the circulation pipe forms a flat tube structure with an L-shaped cross-section, one of the openings of the circulation pipe is located at the bottom of the drying box body, and the other opening of the circulation pipe is located on the inner top surface of the drying box body, and the fan assembly is installed on the inner wall of the opening at the top of the circulation pipe.

[0012] As a preferred embodiment of the present invention, the air guide plates form a rectangular plate structure, the two air guide plates are distributed in an inward-facing "X" shape, and the air guide plates are located directly below the fan assembly.

[0013] As a preferred embodiment of the present invention, both ends of the fin are fixedly connected to two air guide plates respectively, and a circular hole for installing a thermocouple is opened on the wall of the fin, and the thermocouple is inserted into the circular hole.

[0014] As a preferred embodiment of the present invention, the lateral air inlet pipe is fixedly connected to the side wall of the circulation pipe, a window is provided on the side wall of the drying box body, and the lateral air inlet pipe extends through the window to the outside of the drying box body.

[0015] As a preferred embodiment of the present invention, the adjustment assembly includes a baffle, a pushing block and an adjusting screw. The inner wall of the lateral air intake pipe elastically connects the two baffles, the pushing block is rotatably connected to the adjusting screw, and the adjusting screw is threadedly connected to the lateral air intake pipe.

[0016] As a preferred embodiment of the present invention, the baffle forms a rectangular plate structure, the two baffles contact each other to block the opening of the side air intake pipe, a spring is fixedly installed on the back of the baffle, and the baffle is rotatably connected to the side air intake pipe.

[0017] As a preferred embodiment of the present invention, the pushing block forms a block structure with a triangular horizontal cross-section, the end of the adjusting screw is rotatably connected to the pushing block, the two waists of the adjusting screw respectively abut against two baffles, and a threaded hole is provided on the end face of the lateral air intake pipe, and the adjusting screw is connected to the threaded hole.

[0018] The utility model provides a hot air circulation oven with the following beneficial effects:

[0019] 1. This hot air circulation oven uses a fan assembly to draw air into a circulation tube and discharge it from the opening below the air guide plate to achieve air circulation. Air guide plates and fins are provided to guide the air through the air guide plates so that the air is accelerated when passing through the funnel-shaped channel formed between the two air guide plates. With multiple fins, high-flow air contacts the fins and the thermocouple. Of course, the thermocouple needs to be connected to a power supply to increase the contact surface between the air and the thermocouple and increase the air flow rate, thereby promoting hot air circulation and improving the drying of biopharmaceutical equipment in the drying oven body, with good effect and high efficiency.

[0020] 2. This hot air circulation oven can realize internal and external circulation of the circulation pipe through the opening at the bottom of the circulation pipe and the opening of the side air inlet pipe, that is, when the port of the side air inlet pipe is closed, air enters from the bottom opening of the circulation pipe and is ejected downward from the opening above the circulation pipe to realize internal circulation, and when the opening of the side air inlet pipe is opened, air can be taken in from the port of the side air inlet pipe and the lower port of the circulation pipe to realize dual-path air intake. After the drying is completed, it can be used to cool the equipment, and during the drying process, hot air circulation can be realized inside the drying box body, reducing heat loss and energy consumption. By turning the adjusting screw, the adjusting screw pushes the pushing block to push the two baffles. The two baffles rotate to a certain angle and squeeze the corresponding spring deformation, forming a gap between the two baffles so that air can enter from between the two baffles. The amount of air intake can be adjusted by the opening of the two baffles, with strong adjustability and easy operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an overall three-dimensional diagram of the utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of the drying box body of the utility model;

[0023] Figure 3 This is a three-dimensional diagram of the circulation pipe of the utility model;

[0024] Figure 4 This is a cross-sectional view of the circulation pipe of the utility model;

[0025] Figure 5 This is a schematic diagram of the side air intake pipe installation adjustment component of the present invention.

[0026] Legend: 10, drying oven body; 20, circulation pipe; 21, side air inlet pipe; 22, fan assembly; 23, air guide plate; 24, fin; 30, baffle; 31, push block; 32, adjusting screw. DETAILED DESCRIPTION

[0027] A hot air circulation oven, such as Figure 1 and Figure 2 As shown, including:

[0028] The drying box body 10 has an open box structure, and a sealed door is hinged at the opening of the drying box body 10. Specifically, the drying box body 10 is a rectangular box, and a pad is fixedly provided at the bottom of the drying box body 10;

[0029] like Figure 2 、 Figure 3 and Figure 4 As shown, the air guide assembly is arranged in the cavity of the drying box body 10 for guiding the air flow. The air guide assembly includes a circulation pipe 20, a lateral air inlet pipe 21, a fan assembly 22, an air guide plate 23 and a fin 24. The circulation pipe 20 is fixedly connected to the drying box body 10. Both ends of the circulation pipe 20 have openings. The lateral air inlet pipe 21 is fixedly connected and communicated with the circulation pipe 20. The fan assembly 22 is arranged at one of the openings of the circulation pipe 20. Two air guide plates 23 are fixedly installed on the inner wall of the drying box body 10. A plurality of fins 24 are fixedly connected between the two air guide plates 23. The fins 24 The wall surface of the drying oven body 10 is provided with a thermocouple, and the fan assembly 22 can suck air from the opening of the circulation pipe 20 or the side air inlet pipe 21 and discharge it from the position where the air guide plate 23 is located; the circulation pipe 20 forms a flat pipe structure with an L-shaped cross section, one of the openings of the circulation pipe 20 is located at the bottom of the drying oven body 10, and the other opening of the circulation pipe 20 is located on the inner top surface of the drying oven body 10, and the fan assembly 22 is installed on the inner wall of the opening at the top of the circulation pipe 20, and the air guide plate 23 forms a rectangular plate structure, and the two air guide plates 23 are distributed in an inward-facing manner. The air guide plates 23 are located at the fan assembly 22. Directly below, the two ends of the fin 24 are fixedly connected to the two air guide plates 23 respectively. The wall of the fin 24 is provided with a circular hole for installing a thermocouple, and the thermocouple is inserted into the circular hole. The lateral air inlet pipe 21 is fixedly connected to the side wall of the circulation pipe 20. The side wall of the drying box body 10 is provided with a window. The lateral air inlet pipe 21 extends through the window to the outside of the drying box body 10. The fan assembly 22 includes a motor and a rotating shaft. The motor is fixedly connected to the circulation pipe 20. The output shaft of the rotating shaft motor is fixedly connected and rotatably connected to the circulation pipe 20. The wall of the rotating shaft is fixedly installed with an impeller. Through the fan assembly 22 Air is sucked into the circulation pipe 20 and discharged from the opening below the air guide plate 23 to achieve air circulation. The air guide plate 23 and the fins 24 are provided. The air is guided by the air guide plate 23 so that the air is accelerated when passing through the funnel-shaped channel formed between the two air guide plates 23. With the cooperation of multiple fins 24, the high-flow air contacts the fins 24 and the thermocouple. Of course, the thermocouple needs to be connected to the power supply to increase the contact surface between the air and the thermocouple and increase the air flow rate, promote the circulation of hot air, and improve the drying of the biopharmaceutical equipment in the drying box body 10, with good effect and high efficiency.

[0030] like Figure 3 and Figure 5 As shown, the regulating assembly is provided at the port of the side air intake pipe 21 and is used to control the opening and closing of the side air intake pipe 21;

[0031] The adjusting assembly includes a baffle 30, a pushing block 31 and an adjusting screw 32. The inner wall of the side air intake pipe 21 is elastically connected to the two baffles 30, the pushing block 31 is rotatably connected to the adjusting screw 32, and the adjusting screw 32 is threadedly connected to the side air intake pipe 21. The baffle 30 forms a rectangular plate structure, and the two baffles 30 conflict with each other to block the opening of the side air intake pipe 21. A spring is fixedly installed on the back of the baffle 30, and the baffle 30 is rotatably connected to the side air intake pipe 21, and the pushing block 31 forms a block structure with a triangular horizontal cross-section. The end of the adjusting screw 32 is rotatably connected to the pushing block 31, and the two waists of the adjusting screw 32 respectively conflict with the two baffles 30. A threaded hole is provided on the end face of the side air intake pipe 21, and the adjusting screw 32 is connected to the threaded hole. As a supplement to the above scheme, through the opening at the bottom of the circulation pipe 20 and the opening of the side air intake pipe 21, it can be achieved The circulation pipe 20 circulates inside and outside in a manner that, when the port of the side air inlet pipe 21 is closed, air enters from the bottom opening of the circulation pipe 20 and is ejected downward from the opening above the circulation pipe 20 to realize internal circulation, and when the opening of the side air inlet pipe 21 is opened, air can be taken in from the port of the side air inlet pipe 21 and the lower port of the circulation pipe 20 to realize dual-path air intake. After the drying is completed, it can be used to cool the equipment, and during the drying process, hot air circulation can be realized inside the drying box body 10 to reduce heat loss and energy consumption. The adjusting screw 32 is rotated, and the adjusting screw 32 pushes the pushing block 31 to push the two baffles 30. The two baffles 30 rotate to a certain angle and squeeze the corresponding spring deformation. A gap is formed between the two baffles 30, and air can enter from between the two baffles 30. The amount of air intake can be adjusted by the opening of the two baffles 30, with strong adjustability and easy operation.

[0032] The working principle of the present invention is as follows: the adjusting screw 32 is rotated, and the adjusting screw 32 pushes the pushing block 31 to push the two baffles 30. The two baffles 30 rotate to a certain angle and squeeze the corresponding spring deformation. A gap is formed between the two baffles 30, and air can enter from between the two baffles 30. The amount of air intake can be adjusted by the opening of the two baffles 30. The fan assembly 22 sucks air into the circulation pipe 20 and discharges it from the opening below the air guide plate 23 to realize air circulation. The air guide plate 23 and the fins 24 are provided. The air is guided by the air guide plate 23 so that the air is accelerated when passing through the funnel-shaped channel formed between the two air guide plates 23. With the multiple fins 24, the high-speed air is in contact with the fins 24 and the thermocouple. Of course, the thermocouple needs to be connected to the power supply. The high-speed flowing air is heated and sent into the cavity of the drying box 10.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A hot air circulation oven, characterized in that: include: The drying box body (10) has an open box structure, and a sealed door is hinged at the opening of the drying box body (10); An air guide assembly is arranged in the cavity of the drying box body (10) for guiding air flow, the air guide assembly comprising a circulation pipe (20), a lateral air inlet pipe (21), a fan assembly (22), an air guide plate (23) and fins (24), the circulation pipe (20) is fixedly connected to the drying box body (10), both ends of the circulation pipe (20) have openings, the lateral air inlet pipe (21) is fixedly connected to and communicates with the circulation pipe (20), the fan assembly (22) is arranged at one of the openings of the circulation pipe (20), two air guide plates (23) are fixedly installed on the inner wall of the drying box body (10), a plurality of fins (24) are fixedly connected between the two air guide plates (23), and a thermocouple is provided on the wall surface of the fin (24), and the fan assembly (22) can suck air from the opening of the circulation pipe (20) or the lateral air inlet pipe (21) and discharge it from the position where the air guide plate (23) is located; The regulating assembly is arranged at the port of the lateral air inlet pipe (21) and is used to control the opening and closing of the lateral air inlet pipe (21).

2. The hot air circulation oven according to claim 1, characterized in that: The circulation pipe (20) is formed into a flat tube structure with an L-shaped cross section. One opening of the circulation pipe (20) is located at the bottom of the drying box body (10), and the other opening of the circulation pipe (20) is located on the inner top surface of the drying box body (10). The fan assembly (22) is installed on the inner wall of the opening at the top of the circulation pipe (20).

3. The hot air circulation oven according to claim 1, characterized in that: The wind guide plates (23) form a rectangular plate structure, and the two wind guide plates (23) are distributed in an inward-facing "X" shape. The wind guide plates (23) are located directly below the fan assembly (22).

4. The hot air circulation oven according to claim 1, characterized in that: The two ends of the fin (24) are fixedly connected to the two air guide plates (23) respectively. The wall surface of the fin (24) is provided with a circular hole for installing a thermocouple, and the thermocouple is inserted into the circular hole.

5. The hot air circulation oven according to claim 1, characterized in that: The side air inlet pipe (21) is fixedly connected to the side wall of the circulation pipe (20); a window is provided on the side wall of the drying box body (10); and the side air inlet pipe (21) passes through the window and extends to the outside of the drying box body (10).

6. The hot air circulation oven according to claim 1, characterized in that: The adjustment assembly comprises a baffle (30), a pushing block (31) and an adjusting screw (32); the inner wall of the lateral air inlet pipe (21) is elastically connected to the two baffles (30); the pushing block (31) is rotatably connected to the adjusting screw (32); and the adjusting screw (32) is threadedly connected to the lateral air inlet pipe (21).

7. The hot air circulation oven according to claim 6, characterized in that: The baffles (30) form a rectangular plate structure. The two baffles (30) contact each other to block the opening of the side air intake pipe (21). A spring is fixedly installed on the back of the baffle (30). The baffle (30) is rotatably connected to the side air intake pipe (21).

8. The hot air circulation oven according to claim 6, characterized in that: The squeezing and pushing block (31) forms a block structure with a triangular horizontal cross section. The end of the adjusting screw (32) is rotatably connected to the squeezing and pushing block (31). The two waists of the adjusting screw (32) respectively abut against the two baffles (30). The end surface of the lateral air inlet pipe (21) is provided with a threaded hole, and the adjusting screw (32) is connected to the threaded hole.

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