Cyclic heating oven

Abstract

The utility model discloses a circulation heating oven which comprises a heating box body, a circulation inner cavity is formed in the heating box body and comprises a heat convection cavity and a heating cavity, heating devices are arranged on the two sides of the heat convection cavity, and a containing frame assembly is arranged in the heating cavity. The placing frame assembly comprises supporting frames, and a placing plate and a flow guide plate are arranged between the supporting frames. The circulating inner cavity is formed in the heating box body and comprises the heat convection cavity and the heating cavity, the heating devices are arranged on the two sides of the heat convection cavity, the placing frame assembly is arranged in the heating cavity, and the heating assembly conducts drying operation on the special-shaped pipe machined on the placing frame assembly. Hot air is fully contacted with the workpiece for uniform drying; a fairing is arranged at the top of the heat convection cavity, a circulating fan is arranged above the fairing, an exhaust valve is arranged on one side of the circulating fan, circulating suction and exhaust of air are completed through the circulating fan and the exhaust valve, and the temperature is kept constant while water vapor in the cavity is exhausted.

Description

Technical Field

[0001] The utility model relates to the technical field of ovens, in particular to a circulating heating oven. Background Art

[0002] The design and shape of the special-shaped pipes installed inside the vehicle need to vary according to the vehicle model, engine layout and exhaust system design, including exhaust pipes and drain pipes. The main function of the exhaust pipe is to effectively discharge exhaust gas from the engine and provide good performance while minimizing noise and tail gas emissions; the drain pipe is used to discharge liquid waste generated inside the vehicle, such as coolant in the engine cooling system, condensed water in the air-conditioning system, etc.

[0003] After the special-shaped tube is processed, it must be dried in a hot air oven. However, in traditional hot air circulation ovens, the heating device is located at the bottom of the oven. After the fan sends air into the air duct, the wind force is lost, which reduces the drying speed. When the workpiece is placed on the bracket, the hot air can only fully contact the outer surface of the workpiece, while the inner surface where the workpiece contacts the bracket may not be dried evenly. In addition, the multi-layer tray structure causes some liquids to drip from the top layer of the tray after being heated, making it difficult to clean. Utility Model Content

[0004] The purpose of the present invention is to solve the above problems and provide a circulating heating oven.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions, including:

[0006] A heating box body is provided with a circulation inner cavity inside the heating box body, the circulation inner cavity includes a heat convection cavity and a heating cavity, heating devices are provided on both sides of the heat convection cavity, and a placement rack assembly is provided inside the heating cavity;

[0007] The placement rack assembly includes a support rack, and a placement plate and a guide plate are arranged between the support racks. The placement plate is used to place the processed special-shaped tubes, and the guide plate is used to limit the flow of hot air.

[0008] As a further description of the above technical solution, a fairing is provided on the top of the heat convection chamber, and a circulating fan is provided above the fairing and through the heating box.

[0009] As a further description of the above technical solution, an exhaust valve is provided on one side of the circulating fan that passes through the heating box body, and the circulating intake and exhaust of air are completed through the circulating fan and the exhaust valve.

[0010] As a further description of the above technical solution, the heating device is a stainless steel electric heating tube, and two groups of the heating device are symmetrically arranged. The heating tube heats the air in the heating cavity through heat convection.

[0011] As a further description of the above technical solution, heating grooves are symmetrically provided on both sides of the support frame, and the heating grooves are used to clamp the support blocks.

[0012] As a further description of the above technical solution, the support block is L-shaped, and the placement plate is overlapped between the support frames through the support block.

[0013] As a further description of the above technical solution, the placement plate is a mesh plate or a circular hole plate, and the thickness of the placement plate is 20-30 mm.

[0014] As a further description of the above technical solution, the guide plate is a circular hole plate, and the guide plate is detachably fixed to the support frame by a nut.

[0015] As a further description of the above technical solution, an insulation layer is provided between the circulation inner cavity and the heating box, and the material of the insulation layer is any one of glass wool, mineral wool, polystyrene foam and polyurethane foam.

[0016] As a further description of the above technical solution, an electrical control box is provided on one side of the heating cavity, and the electrical control box is used to control the process of cyclic heating.

[0017] The beneficial effects of the utility model are as follows:

[0018] 1. The utility model provides a circulating inner cavity inside the heating box, which includes a heat convection cavity and a heating cavity. Heating devices are provided on both sides of the heat convection cavity. A placement rack assembly is provided inside the heating cavity. The heating assembly dries the special-shaped tubes processed on the placement rack assembly to ensure that the hot air fully contacts the workpiece for uniform drying. A fairing is provided on the top of the heat convection cavity, and a circulating fan is provided above the fairing and passes through the heating box. An exhaust valve is provided on one side of the circulating fan and passes through the heating box. The circulating intake and exhaust of air are completed through the circulating fan and the exhaust valve, and the temperature is maintained constant while the water vapor inside the cavity is discharged.

[0019] 2. In the present invention, the placement rack assembly includes a support rack, and a placement plate and a guide plate are arranged between the support racks. The placement plate is used to place the processed special-shaped tubes, and the guide plate is used to limit the flow of hot air, effectively ensuring that the hot air stably enters the heating chamber from the heat convection chamber.

[0020] In order to more clearly illustrate the structural features and functions of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of the utility model circulating heating oven;

[0022] Figure 2 It is a top view of the placement rack assembly of the utility model;

[0023] Figure 3 This is the front view of the placement rack assembly of the utility model;

[0024] Figure 4 yes Figure 2 Schematic diagram of the structure of the middle support plate Figure 1 ;

[0025] Figure 5 yes Figure 2 Schematic diagram of the structure of the middle support plate Figure 2 ;

[0026] Figure 6 yes Figure 3 An enlarged schematic diagram of .

[0027] Reference numerals:

[0028] 1. Heating box; 2. Circulation cavity; 21. Convection cavity; 22. Heating cavity; 3. Heating device; 4. Placement rack assembly; 41. Support frame; 411. Mounting slot; 42. Placement plate; 43. Guide plate; 44. Support block; 5. Fairing; 6. Circulation fan; 7. Exhaust valve; 8. Insulation layer; 9. Electrical control box. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0030] like Figures 1-6 As shown, in one embodiment, a circulating heating oven includes: a heating box body 1, a circulating inner cavity 2 is arranged inside the circulating heating box body 1, and the circulating inner cavity 2 includes a heat convection cavity 21 and a heating cavity 22, heating devices 3 are arranged on both sides of the heat convection cavity 21, and a placement rack assembly 4 is arranged inside the heating cavity 22.

[0031] Furthermore, in order to ensure the heating effect and reduce energy loss, an insulation layer 8 is provided between the circulation cavity 2 and the heating box 1. The insulation layer 8 is made of any one of glass wool, mineral wool, polystyrene foam or polyurethane foam, which has good thermal insulation performance and can effectively reduce the loss of heat energy. On one side of the heating box 1, an electrical control box 9 is provided. The electrical control box 9 is used to control the process of the circulation heating, including adjusting the power of the heating device 3, monitoring the temperature, setting the heating time and other functions. Through the electrical control box 9, the user can flexibly control the heating process to meet different heating needs and process requirements.

[0032] like Figures 1-6 As shown, in this embodiment, a fairing 5 is provided on the top of the heat convection chamber 21, and a circulating fan 6 is provided above the fairing 5 and passes through the heating box 1, which can promote air circulation and improve heating uniformity and heat transfer efficiency. An exhaust valve 7 is provided on one side of the circulating fan 6 and passes through the heating box 1. The synergistic effect of the exhaust valve 7 and the circulating fan 6 completes the circulation of air intake and discharge. The heating device 3 is a stainless steel electric heating tube, which has the characteristics of corrosion resistance and high temperature resistance, and can ensure the stability and safety of the heating process. Specifically, the heating device 3 is symmetrically arranged in two groups, and the heating tube heats the air in the heating chamber 22 by heat convection.

[0033] like Figures 1-6 As shown, in this embodiment, the placement rack assembly 4 includes a support rack 41, and the support rack 41 has mounting grooves 411 symmetrically provided on both sides, and the mounting grooves 411 are used to clamp the support blocks 44. Specifically, the support blocks 44 are L-shaped, and the placement plate 42 is overlapped between the support racks 41 through the support blocks 44.

[0034] Furthermore, a placement plate 42 and a guide plate 43 are provided between the support frames 41. The placement plate 42 is used to place the processed special-shaped tubes, and the guide plate 43 is used to restrict the flow of hot air. Specifically, the placement plate 42 is a mesh plate or a circular perforated plate, with a thickness of 20-30 mm. The guide plate 43 is a circular perforated plate and is removably fixed to the support frame 41 via nuts.

[0035] Working principle: A circulating inner cavity 2 is provided inside the heating box 1, and the circulating inner cavity 2 includes a heat convection cavity 21 and a heating cavity 22. Heating devices 3 are provided on both sides of the heat convection cavity 21. By performing a drying operation on the workpiece on the placement rack assembly 4, it is ensured that the hot air fully contacts the workpiece and achieves uniform drying. A placement rack assembly 4 is provided inside the heating cavity 22 for placing the processed special-shaped tubes. A fairing 5 is provided on the top, and a circulating fan 6 is provided above the fairing 5 and passes through the heating box 1. An exhaust valve 7 is provided on one side of the circulating fan 6 and passes through the heating box 1. The circulating fan 6 and the exhaust valve 7 complete the circulation of air intake and discharge, thereby discharging the water vapor inside the cavity and maintaining a constant temperature. The placement rack assembly 4 includes a support frame 41, and a placement plate 42 and a guide plate 43 are provided between the support frames 41. The placement plate 42 is used to place the processed special-shaped tubes, and the guide plate 43 is used to limit the flow of hot air, effectively ensuring that the hot air stably enters the heating chamber 22 from the heat convection chamber 21, and effectively improving the drying efficiency.

[0036] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A circulating heating oven, characterized in that: include: A heating box (1), wherein a circulation inner cavity (2) is arranged inside the heating box (1), wherein the circulation inner cavity (2) comprises a heat convection cavity (21) and a heating cavity (22), heating devices (3) are arranged on both sides of the heat convection cavity (21), and a placement rack assembly (4) is arranged inside the heating cavity (22); The placement rack assembly (4) comprises a support rack (41), and a placement plate (42) and a guide plate (43) are arranged between the support racks (41). The placement plate (42) is used to place the processed special-shaped tubes, and the guide plate (43) is used to limit the flow of hot air.

2. The circulating heating oven according to claim 1, characterized in that: A fairing (5) is arranged on the top of the heat convection chamber (21), and a circulating fan (6) is arranged above the fairing (5) and through the heating box (1).

3. The circulating heating oven according to claim 2, characterized in that: An exhaust valve (7) is provided on one side of the circulation fan (6) and passes through the heating box (1), and the circulation intake and exhaust of air are completed through the circulation fan (6) and the exhaust valve (7).

4. The circulating heating oven according to claim 1, characterized in that: The heating device (3) is a stainless steel electric heating tube. Two groups of the heating device (3) are symmetrically arranged. The heating tube heats the air in the heating chamber (22) through heat convection.

5. The circulating heating oven according to claim 1, characterized in that: The support frame (41) is symmetrically provided with mounting grooves (411) on both sides, and the mounting grooves (411) are used for clamping the support block (44).

6. The circulating heating oven according to claim 5, characterized in that: The support block (44) is L-shaped, and the placement plate (42) is overlapped between the support frames (41) through the support block (44).

7. The circulating heating oven according to claim 1, characterized in that: The placement plate (42) is a mesh plate or a circular hole plate, and the thickness of the placement plate (42) is 20-30 mm.

8. The circulating heating oven according to claim 1, characterized in that: The guide plate (43) is a circular hole plate, and the guide plate (43) is detachably fixed to the support frame (41) via a nut.

9. The circulating heating oven according to claim 1, characterized in that: A heat-insulating layer (8) is provided between the circulation inner cavity (2) and the heating box (1), and the material of the heat-insulating layer (8) is any one of glass wool, mineral wool, polystyrene foam and polyurethane foam.

10. The circulating heating oven according to claim 1, characterized in that: An electrical control box (9) is provided on one side of the heating chamber (22), and the electrical control box (9) is used to control the process of cyclic heating.

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