Energy-saving oven and control method thereof

Abstract

The invention provides an energy-saving oven and a control method thereof.The oven comprises a heating mechanism, the heating mechanism comprises two oppositely-arranged first side plates, a first top plate arranged at the top ends of the two first side plates, two air inlet plates, an air outlet plate, a plurality of fans and a plurality of lamp tube assemblies, the air inlet plate and the air outlet plate are separately arranged on the inner sides of the first side plate and the first top plate at intervals; first inclined plates inclined inwards are arranged at the two ends of the air inlet plate, a plurality of air inlet holes are formed in the air inlet plate and the first inclined plates, the hole walls of the air inlet holes extend outwards, and the hole diameters are gradually reduced; the air outlet plate comprises perforated sub-plates provided with a plurality of air outlet holes, every two adjacent perforated sub-plates are connected to form a V-shaped structure, the hole walls of the air outlet holes extend inwards, and the hole diameters of the air outlet holes are gradually reduced. The energy consumption of the oven can be effectively reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of shoemaking, in particular to an energy-saving oven and a control method thereof. BACKGROUND

[0002] In recent years, with the continuous progress of science and technology, more and more high-tech and high-tech content products have emerged, and intelligent forming automatic production lines have become more and more popular in the shoemaking industry. In the face of fierce market competition, in order to reduce costs, customers have higher and higher requirements for the energy saving of the imported new production line. The energy consumption of the oven is the largest in the entire automatic production line, accounting for more than 60%.

[0003] The existing oven only pays attention to the influence of the lamp tube temperature on its effect and energy consumption, and ignores the influence of the wind on the effect and energy consumption of the oven. For example, the existing oven has a rough design of the air duct and does not pay attention to the influence of the air duct structure on energy saving. The existing air duct box structure, air outlet and air inlet structure have large wind energy loss. The existing oven has only one thermocouple sensor for each inner tank. The oven temperature measured is only a relatively small interval in the entire oven, and the measured temperature has a large deviation from the required temperature of the entire oven, and cannot represent the overall oven temperature, so that the energy consumption of the oven cannot be reasonably controlled. The existing oven inner tank does not install a sensor for detecting the air volume, ignoring the importance of reasonable air volume to the energy saving of the oven. The control logic of the existing oven fan is too simple, and can only be in the start and stop states, and cannot be frequency-controlled according to the required air speed. SUMMARY

[0004] The main purpose of the present application is to provide an energy-saving oven and a control method thereof, which can effectively reduce the energy consumption of the oven.

[0005] The present application is implemented by the following technical solutions: An energy-saving oven, comprising a heating mechanism, the heating mechanism comprising two first side plates arranged oppositely and a first top plate arranged at the top end of the two first side plates, two air inlet plates and an air outlet plate forming a horizontally extending inner cavity, a plurality of fans and a plurality of lamp tube assemblies, the air inlet plates and the air outlet plate being respectively arranged at the inner sides of the first side plates and the first top plate; An air inlet channel is formed between the air inlet plate and the first side plate, the fan is arranged on the first side plate and its air inlet communicates with the air inlet channel, the air inlet plate has a first inclined plate inclined inward at both ends, the air inlet plate and the first inclined plate are both provided with a plurality of air inlet holes, the hole wall of the air inlet hole extends outward and the hole diameter gradually decreases; The air outlet plate and the first top plate form an air outlet channel, the fan outlet is communicated with the air outlet channel, the air outlet plate comprises a plurality of groups of sub-plate groups connected in sequence, the sub-plate group comprises a lamp tube sub-plate horizontally arranged to install the lamp tube assembly and a perforated sub-plate respectively and obliquely arranged on both sides of the lamp tube sub-plate and provided with a plurality of air outlet holes, two adjacent perforated sub-plates are connected to form a V-shaped structure, and the hole wall of the air outlet hole extends inward and the hole diameter gradually decreases; The workpiece needing to be heated more on the side is located in the inner cavity, the lamp tube assembly irradiates the inner cavity, under the action of the fan, the hot air in the inner cavity enters the air inlet channel from the air inlet hole, then enters the fan inlet, and then enters the air outlet channel from the fan outlet, and the hot air in the air outlet channel enters the inner cavity from the air outlet hole and blows towards the two side surfaces of the workpiece.

[0006] Further, the lamp tube assembly comprises a lampshade and an infrared lamp tube arranged in the lampshade, the lampshade comprises a second top plate horizontally arranged, second inclined plates arranged on both sides of the second top plate and inclined outward from top to bottom, and end plates arranged at the end of the top plate and the second inclined plate.

[0007] Further, a plurality of groups of thermocouple sensors and a plurality of groups of air speed sensors are further included, the thermocouple sensors and the air speed sensors are arranged on the first side plate and extend into the inner cavity.

[0008] Further, the lamp tube sub-plate comprises a gap hole for the infrared lamp tube, two clamping plates arranged at the edge of the gap hole and extending outward, the cross section of the clamping plate is in a transverse U shape, the opening of the transverse U shape faces the gap hole, the lower end of the second inclined plate has a plug plate extending horizontally outward, and the plug plate is inserted into the opening to enable the lampshade to be mounted on the lamp tube sub-plate.

[0009] Further, the air outlet plate is further provided with a baffle extending upward at both ends.

[0010] Further, the free end of the first inclined plate is provided with a first vertical plate, the free end of the first vertical plate is provided with a second vertical plate extending backward, the free end of the second vertical plate is provided with a third vertical plate parallel to the first vertical plate, and the cross section of the first, second and third vertical plates is in a U shape.

[0011] Further, the included angle between the second inclined plate and the horizontal plane is satisfies wherein, , , GC is the distance between the second top plate of the lampshade and the lamp tube sub-plate, is half of the distance between the lower ends of the two second inclined plates of the lampshade, BC is the distance between the center of the infrared lamp tube and the lamp tube sub-plate, L2 is the distance between the centers of two adjacent infrared lamp tubes, and H2 is the distance between the lamp tube sub-plate and the workpiece, BC, L2 and H2 are known quantities.

[0012] Further, the energy-saving oven further comprises a shell and a conveying belt, the shell wraps the heating mechanism, and the conveying belt crosses the inner cavity of the heating mechanism to transport the workpiece.

[0013] Further, the energy-saving oven further comprises a plurality of heating mechanisms stacked one above another.

[0014] The energy-saving oven is further achieved by the following technical solutions. The control method of the energy-saving oven according to any one of the above has the following steps. Step S1, starting, heating process: all infrared lamp tubes operate at full power, the fan corresponding to the middle section of the inner cavity operates at full power P1, and the fan corresponding to the two side sections of the inner cavity operates at power nP1, and the wind speed is greater than the target wind speed V0, wherein n<100%. Step S2, reaching the target temperature t0, constant temperature process: the operating power of all the fans is reduced, the wind speed of the middle section of the inner cavity is reduced to the target wind speed V0, and the wind speed of the two side sections of the inner cavity is reduced to nV0. Step S3, after reaching the target temperature t0, the temperature continues to rise, and the cooling process: the operating power of each infrared lamp tube is reduced, the operating power of each fan is increased so that the wind speed of the inner cavity is greater than the target wind speed V0, and the wind speed of the fan corresponding to the two side sections of the inner cavity is higher than that of the fan corresponding to the middle section of the inner cavity. Step S4, after reaching the target temperature t0, the temperature decreases, and the heating process: the operating power of each infrared lamp tube is increased, the fan corresponding to the middle section of the inner cavity operates at full power, and the fan corresponding to the two side sections of the inner cavity operates at power nP1, and the wind speed is greater than the target wind speed. Wherein, the actual temperature in the inner cavity is obtained according to the average value of the data measured by each thermocouple sensor, and the actual wind speed in the inner cavity is obtained according to the average value of the data measured by each wind speed sensor.

[0015] From the above description of the present application, compared with the prior art, the present application has the following beneficial effects: 1. During operation, the lamp assembly illuminates the inner cavity. Under the action of the fan, the hot air in the inner cavity enters the air inlet channel through the air inlet hole, then enters the fan air inlet, and finally enters the air outlet channel through the fan air outlet. The hot air in the air outlet channel enters the inner cavity through the air outlet hole and blows towards both sides of the workpiece, controlling the air circulation within the heating mechanism, thus achieving internal heat circulation and reducing the energy consumption of the oven. The sub-plate assembly of the air outlet plate includes a lamp tube sub-plate arranged horizontally to install the lamp assembly and perforated sub-plates respectively inclined on both sides of the lamp tube sub-plate with several air outlet holes. Two adjacent perforated sub-plates are connected to form a V-shaped structure. Since the perforated sub-plates are inclined, the air outlet holes on them are also inclined, and the air enters from the air outlet holes. The air inlet and outlet are also tilted when entering the cavity, so more air can be blown to the side of the workpiece, reducing the time it takes for the workpiece to reach the target state in the oven. It also reduces the amount of air that overflows from the openings at both ends of the cavity, thereby reducing the energy consumption of the oven. The diameter of the air inlet and outlet gradually decreases as the hole wall extends, which reduces the energy loss of air when entering and exiting the holes. With the air volume remaining constant, it also accelerates the air flow rate in the smaller diameter area, thereby reducing the time it takes for the workpiece to reach the target state in the oven. The air inlet plate has an inwardly inclined first slope at both ends, which can block the amount of air that overflows from the openings at both ends of the cavity, allowing more air to enter the air inlet channel through the air inlet, thereby reducing the energy consumption of the oven.

[0016] 2. The second inclined plate of the lampshade ensures that the side of the workpiece is also fully illuminated by the infrared lamp. The optimal angle between the second inclined plate and the horizontal plane can be obtained using the angle formula to achieve the best illumination effect.

[0017] 3. By setting up multiple sets of thermocouple sensors and multiple sets of wind speed sensors, the measured temperature and wind speed can be closer to the actual situation inside the cavity, serving as a more accurate reference when controlling the oven, thereby achieving better control results.

[0018] 4. The clamping plate of the lamp tube sub-board and the insertion plate of the lamp cover cooperate with each other to enable the lamp cover to be quickly and detachably installed on the lamp tube sub-board, with a reasonable and reliable structure.

[0019] 5. The air outlet plate has upward-extending baffles at both ends to prevent hot air from overflowing from the air outlet channel. The first, second and third vertical plates with a U-shaped cross section on the first inclined plate of the air inlet plate can prevent hot air from overflowing from the air inlet channel, thereby further reducing the energy consumption of the oven.

[0020] 6. Multiple stacked heating mechanisms can be installed inside the housing, which can heat different workpieces according to actual production needs and improve production efficiency.

[0021] 7. The control method of the oven adds the wind speed parameter, in the case of the temperature fixed at the target temperature, the faster the wind speed, the workpiece can reach the target state faster, thereby reducing the time of the workpiece heated in the oven, reflected in energy saving, is to reduce the energy consumption required by the oven to produce the same output shoes. BRIEF DESCRIPTION OF DRAWINGS

[0022] The application will be further described in conjunction with the drawings and specific embodiments.

[0023] Figure 1 The structure diagram of the oven of the application.

[0024] Figure 2 Another structure diagram of the oven of the application (showing the heating mechanism).

[0025] Figure 3 Another structure diagram of the oven of the application (showing the air outlet plate).

[0026] Figure 4 The structure diagram of the air inlet plate of the application.

[0027] Figure 5 The structure diagram of the air outlet plate of the application. Figure 4 The enlarged view of part A in the figure.

[0028] Figure 6 The structure diagram of the air outlet plate of the application.

[0029] Figure 7 Another structure diagram of the air outlet plate of the application.

[0030] Figure 8 The structure diagram of the lampshade of the application.

[0031] Figure 9 The structure diagram of the lamp tube assembly of the application.

[0032] Figure 10 The light irradiation diagram of the lamp tube assembly of the application.

[0033] Figure 11 The angle calculation diagram of the lamp tube assembly of the application.

[0034] The components are as follows: 1. Shell; 2. Conveyor belt; 3. Heating mechanism; 31. First side plate; 32. First top plate; 33. Air inlet plate; 331. First inclined plate; 332. Air inlet hole; 333. Air inlet hole wall; 334. First vertical plate; 335. Second vertical plate; 336. Third vertical plate; 34. Air outlet plate; 341. Lamp tube sub-plate; 3411. Clearance hole; 3412. Clamping plate; 342. Opening sub-plate; 343. Air outlet hole; 344. Air outlet hole wall; 345. Baffle; 35. Fan; 351. Air outlet; 36. Lamp tube assembly; 3611. Second top plate; 3612. Second inclined plate; 3613. End plate; 3614. Insert plate; 362. Connecting plate; 363. Infrared lamp tube. Detailed Implementation

[0035] The present invention will be further described below through specific embodiments.

[0036] like Figures 1 to 11 As shown, the energy-saving oven includes two heating mechanisms 3 stacked on top of each other, a housing 1 that encloses the two heating mechanisms 3, and two conveyor belts 2 that cooperate with the two heating mechanisms 3 respectively. The lower conveyor belt 2 transports the shoe upper, and the upper conveyor belt 2 transports the shoe sole. The shoe upper and shoe sole can be baked in the oven at the same time.

[0037] The heating mechanism 3 includes two opposing first side plates 31 and a first top plate 32 disposed at the top of the two first side plates 31, two air inlet plates 33 and an air outlet plate 34 forming a laterally extending inner cavity, a plurality of fans 35, and a plurality of lamp tube assemblies 36. The air inlet plates 33 and the air outlet plates 34 are respectively spaced apart and disposed inside the first side plates 31 and the first top plate 32. The inner cavity has openings at both ends, and the conveyor belt 2 passes laterally through the inner cavity.

[0038] An air inlet channel is formed between the air inlet plate 33 and the first side plate 31. A fan 35 is mounted on the first side plate 31, and its air inlet connects to the air inlet channel. The air inlet plate 33 has inwardly inclined first slope plates 331 at both ends. A first vertical plate 334 is located at the free end of the first slope plate 331. A second vertical plate 335 extending backward is located at the free end of the first vertical plate 334. A third vertical plate 336 parallel to the first vertical plate 334 is located at the free end of the second vertical plate 335. The cross-sections of the first vertical plate 334, second vertical plate 335, and third vertical plate 336 are U-shaped. Both the air inlet plate 33 and the first slope plate 331 have several air inlet holes 332. The hole walls 333 extend outward relative to the inner cavity, and the hole diameter gradually decreases. The structure of the air inlet hole walls 333 is the same as that of the air outlet hole walls 344. The width of the second vertical plate 335 is greater than the distance between the air inlet plate 33 and the first vertical plate 334, which prevents hot air from escaping from the air inlet channel. In this embodiment, four sets of fans 35 are provided. Each set of fans 35 includes two fans 35 with corresponding positions. The air inlets of the two fans 35 are respectively connected to two air inlet channels.

[0039] The air outlet channel is formed between the air outlet plate 34 and the first top plate 32, the air outlet 351 of the fan 35 is communicated with the air outlet channel, the air outlet plate 34 comprises a plurality of groups of sub-plate groups connected in sequence and a baffle 345 located at the end and extending upward, the sub-plate group comprises a lamp tube sub-plate 341 horizontally arranged to mount the lamp tube assembly 36 and a hole sub-plate 342 respectively arranged obliquely on both sides of the lamp tube sub-plate 341 and opening a plurality of air outlet holes 343, two adjacent hole sub-plates 342 are connected to form a V-shaped structure, and the hole wall 344 of the air outlet hole extends outward relative to the inner cavity and the hole diameter gradually decreases.

[0040] The lamp tube assembly 36 comprises a lampshade and an infrared lamp tube 363 arranged in the lampshade, the lampshade comprises a second top plate 3611 arranged horizontally, a second inclined plate 3612 arranged obliquely outward from top to bottom on both sides of the second top plate 3611, and an end plate 3613 arranged at the end of the top plate and the second inclined plate 3612. The infrared lamp tube 363 is arranged on the inner side of the second top plate 3611 by a connecting plate 362. In order to obtain the best irradiation effect, the best included angle between the second inclined plate 3612 and the horizontal plane is required. The included angle satisfies wherein, BG satisfies the condition GF has a solution, and the B point is the center of the infrared lamp tube 363, GC is the distance between the second top plate 3611 of the lampshade and the lamp tube sub-plate 341, is half of the distance between the lower ends of the two second inclined plates 3612 of the lampshade, BC is the distance between the center of the infrared lamp tube 363 and the lamp tube sub-plate 341, L2 is the distance between the centers of two adjacent infrared lamp tubes 363, and H2 is the distance between the lamp tube sub-plate 341 and the workpiece. BC, L2 and H2 are known quantities, in this embodiment, BC=30mm, L2=300mm, and H2 ranges between 100mm and 110mm, so the range of CE is between 60mm and 69mm, and BG is 16mm. Thus, the energy of the infrared lamp tube 363 can be fully utilized, and energy waste can be avoided.

[0041] In order to facilitate the installation and disassembly of the lamp tube assembly 36, the lamp tube sub-plate 341 comprises a position hole 3411 for the lamp tube, two clamping plates 3412 arranged at the edge of the position hole 3411 and extending outward, the clamping plate 3412 has a transverse U-shaped cross section, the opening of the transverse U-shaped cross section faces the position hole 3411, and the lower end of the second inclined plate 3612 has a horizontally outward extending plug plate 3614, which is inserted into the opening to mount the lampshade on the lamp tube sub-plate 341.

[0042] The workpiece (such as the vamp and the sole in the embodiment) which needs to be heated more on the side (the vamp and the sole enter the oven after being glued on the side instead of the top) is located in the inner cavity, the lamp assembly 36 irradiates the inner cavity, and the hot air in the inner cavity enters the air inlet channel through the air inlet hole 332 under the action of the fan 35, then enters the air inlet of the fan 35, and then enters the air outlet channel through the air outlet 351 of the fan 35, and the hot air in the air outlet channel enters the inner cavity through the air outlet hole 343 and blows to the two sides of the workpiece.

[0043] In order to use the reference value closer to the actual temperature and the wind speed of the inner cavity in the control, a plurality of groups of thermocouple sensors and a plurality of groups of wind speed sensors are arranged, and the thermocouple sensors and the wind speed sensors are arranged on the first side plate 31 and extend to the inner cavity. The specific positions of the thermocouple sensors and the wind speed sensors in the inner cavity can be determined according to actual needs.

[0044] The control method of the energy-saving oven includes the following steps: Step S1, set the target temperature t0 and the target wind speed V0, and number the four groups of fans 35 along the conveying direction of the conveying belt 2 as No. 1, No. 2, No. 3, and No. 4; When the machine is started, the heating process is performed: all the infrared lamp tubes 363 operate at full power, the fans 35 corresponding to the middle section of the inner cavity (No. 2 and No. 3) operate at full power P1, and the fans 35 corresponding to the two side sections of the inner cavity (No. 1 and No. 4) operate at power nP1, and the wind speed is greater than the target wind speed V0, at this time, the wind speed of the middle section of the inner cavity is the largest, and the wind speed of the two side sections is smaller than that of the middle section, so that the heat is concentrated in the middle section of the inner cavity, and the heat dissipated from the two sides of the inner cavity is reduced, wherein 80% < n < 100%; Step S2, when the inner cavity reaches the target temperature t0, the constant temperature process is performed: the operating power of all the fans 35 is reduced, the wind speed of the middle section of the inner cavity is reduced to the target wind speed V0, and the wind speed of the two side sections of the inner cavity is reduced to nV0, the wind speed of the middle section of the inner cavity and the two side sections of the inner cavity is measured by the wind speed sensor, if a plurality of wind speed sensors are arranged in the middle section of the inner cavity and the side section of the inner cavity, the average value of the wind speed data collected by the corresponding wind speed sensors is taken; Step S3, after the inner cavity reaches the target temperature t0, the temperature continues to rise, and the cooling process is performed: the operating power of each infrared lamp tube 363 is reduced to reduce energy loss, the operating power of each fan 35 is increased so that the wind speed of the inner cavity is greater than the target wind speed V0, and at the same time, the wind speed of the fan 35 corresponding to the two side sections of the inner cavity is higher than that of the fan 35 corresponding to the middle section of the inner cavity, so that the temperature is reduced as soon as possible and maintained at t0; Step S4, after the inner cavity reaches the target temperature t0, the temperature is reduced, and then the temperature increasing process is performed: the operating power of each infrared lamp tube 363 is increased to quickly raise the temperature, the fan 35 corresponding to the middle section of the inner cavity is operated at full power, and the fan 35 corresponding to the two side sections of the inner cavity is operated at the power nP1, the wind speed is greater than the target wind speed, at this time, the wind speed of the middle section of the inner cavity is the largest, and the wind speed of the two side sections of the inner cavity is smaller than that of the middle section; Step S5, shutdown: the fan 35 and the infrared lamp tube 363 are both turned off; Wherein, the actual temperature in the inner cavity is obtained according to the average value of the data measured by each thermocouple sensor, and the actual wind speed in the inner cavity is obtained according to the average value of the data measured by each wind speed sensor.

[0045] In the present application, the terms "first", "second", "third" and the like are only used to distinguish similar objects, and do not have to be used to describe a specific order or sequence, and cannot be understood as indicating or implying relative importance. In the description, the directions or positional relationships indicated by "up", "down", "left", "right", "front" and "back" are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application, and do not indicate or imply that the devices referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] In addition, in the description of the present application, "a plurality of" means two or more, unless otherwise specified. The association relationship between the associated objects is described as "and / or", which means that there can be three relationships, for example, A and / or B can mean that there are three cases of A alone, A and B together, and B alone. The character " / " generally represents an "or" relationship between the associated objects before and after it.

[0047] The above is only a specific embodiment of the present application, but the design concept of the present application is not limited thereto, and any non-essential modification of the present application using this concept shall be regarded as an infringement of the protection scope of the present application.

Claims

1. An energy-saving oven, characterized in that: The heating mechanism includes two first side plates arranged opposite each other and a first top plate disposed at the top of the two first side plates, two air inlet plates and an air outlet plate forming a transversely extending inner cavity, several fans and several lamp tube assemblies, with the air inlet plates and the air outlet plates respectively spaced apart inside the first side plates and the first top plate; An air inlet channel is formed between the air inlet plate and the first side plate. The fan is installed on the first side plate and its air inlet is connected to the air inlet channel. The air inlet plate has inwardly inclined first inclined plates at both ends. Several air inlet holes are opened on both the air inlet plate and the first inclined plates. The walls of the air inlet holes extend outward and the diameter of the holes gradually decreases. An air outlet channel is formed between the air outlet plate and the first top plate. The air outlet of the fan is connected to the air outlet channel. The air outlet plate includes multiple sets of sub-plates connected in sequence. Each sub-plate includes a lamp tube sub-plate arranged horizontally to install lamp tube assemblies and an opening sub-plate that is inclinedly arranged on both sides of the lamp tube sub-plate and has several air outlet holes. Two adjacent opening sub-plates are connected to form a V-shaped structure. The walls of the air outlet holes extend inward and the hole diameter gradually decreases. The workpiece that needs to be heated on the side is located inside the inner cavity. The lamp assembly irradiates the inner cavity. Under the action of the fan, the hot air in the inner cavity enters the air inlet channel through the air inlet hole, then enters the fan air inlet, and enters the air outlet channel through the fan air outlet. The hot air in the air outlet channel enters the inner cavity through the air outlet hole and blows to both sides of the workpiece.

2. An energy-saving oven according to claim 1, characterized in that: The lamp assembly includes a lampshade and an infrared lamp tube disposed inside the lampshade. The lampshade includes a horizontally arranged second top plate, second inclined plates disposed on both sides of the second top plate and inclined outward from top to bottom, and end plates disposed at the ends of the top plate and the second inclined plates.

3. An energy-saving oven according to claim 2, characterized in that: It also includes multiple sets of thermocouple sensors and multiple sets of wind speed sensors, which are mounted on the first side plate and extend into the inner cavity.

4. An energy-saving oven according to claim 2 or 3, characterized in that: The lamp tube sub-plate includes a clearance hole for the lamp tube, two clamps set at the edge of the clearance hole and extending outward, the clamps having a transverse U-shaped cross-section with the opening of the transverse U-shape facing the clearance hole, and a horizontally extending insert plate at the lower end of the second inclined plate, the insert plate being inserted into the opening to allow the lamp cover to be installed on the lamp tube sub-plate.

5. An energy-saving oven according to claim 1, 2, or 3, characterized in that: The air outlet plate is also equipped with upward-extending baffles at both ends.

6. An energy-saving oven according to claim 1, 2, or 3, characterized in that: The first inclined plate has a first vertical plate at its free end, a second vertical plate extending backward at its free end, and a third vertical plate parallel to the first vertical plate at its free end. The cross-sections of the first, second, and third vertical plates are U-shaped.

7. An energy-saving oven according to claim 2 or 3, characterized in that: The angle between the second inclined plate and the horizontal plane satisfy ,in, , , GC This refers to the distance between the second top plate of the lampshade and the lamp tube plate. BC is half the distance between the lower ends of the two second inclined plates of the lamp cover, L2 is the distance between the center of the infrared lamp tube and the lamp tube sub-plate, H2 is the distance between the centers of two adjacent infrared lamp tubes, and H2 is the distance between the lamp tube sub-plate and the workpiece. BC, L2, and H2 are all known quantities.

8. An energy-saving oven according to claim 1, 2, or 3, characterized in that: It also includes a housing and a conveyor belt, the housing enclosing the heating mechanism and the conveyor belt traversing the inner cavity of the heating mechanism to transport workpieces.

9. An energy-saving oven according to claim 1, 2, or 3, characterized in that: It includes multiple heating mechanisms stacked on top of each other.

10. A control method for an energy-saving oven according to any one of claims 1 to 9, characterized in that: Includes the following steps: Step S1: Start-up and heating process: All infrared lamps operate at full power, the fan corresponding to the middle section of the inner cavity operates at full power P1, and the fans corresponding to the two sides of the inner cavity operate at power nP1. The wind speed is greater than the target wind speed V0, where n < 100%. Step S2, reaching the target temperature t0, constant temperature process: the operating power of all fans is reduced, so that the wind speed in the middle section of the inner cavity is reduced to the target wind speed V0 and the wind speed in the two sides of the inner cavity is reduced to nV0. Step S3: After reaching the target temperature t0, the temperature continues to rise. Cooling process: reduce the operating power of each infrared lamp tube, increase the operating power of each fan so that the wind speed in the inner cavity is greater than the target wind speed V0, and at the same time ensure that the wind speed of the fans on both sides of the inner cavity is higher than the wind speed of the fans in the middle section of the inner cavity. Step S4: After reaching the target temperature t0, the temperature decreases. During the heating process, the operating power of each infrared lamp is increased, the fan corresponding to the middle section of the inner cavity runs at full power, and the fans corresponding to the two sides of the inner cavity run at power nP1 with a wind speed greater than the target wind speed. The actual temperature inside the cavity is obtained by averaging the data measured by each thermocouple sensor, and the actual wind speed inside the cavity is obtained by averaging the data measured by each wind speed sensor.

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