Heat pipe heat exchange mechanism and baking drying device

Abstract

The application belongs to the technical field of heat exchange, and relates to a heat pipe type heat exchange mechanism, which is characterized by comprising an upper heat pipe assembly, a lower heat pipe assembly and a heat source mechanism, wherein the upper heat pipe assembly comprises a total heat outlet pipe, an upper main heat pipe and an upper branch heat pipe, the upper branch heat pipe is arranged between the total heat outlet pipe and the upper main heat pipe, the total heat outlet pipe is connected with the heat source mechanism through an air outlet channel, the lower heat pipe assembly comprises a total heat inlet pipe, a lower branch heat pipe and a lower main heat pipe, a plurality of lower branch heat pipes are arranged between the total heat inlet pipe and the lower main heat pipe, the lower main heat pipe is connected with the upper main heat pipe through a connecting heat pipe, and the total heat inlet pipe is connected with the heat source mechanism through an air inlet channel and a fan. The application is used to solve the technical problems of the prior art, i.e., the hot air directly passes through materials in the baking process of a baking and drying integrated machine, the hot air carries away water in the materials, the consumption of the hot air is large, the energy consumption is high, and the utilization rate of the hot air is low. The application further discloses a baking and drying device comprising the heat pipe type heat exchange mechanism.

Description

Technical Field

[0001] This invention belongs to the field of heat exchange technology, specifically relating to a heat pipe heat exchange mechanism and a baking and drying apparatus including the aforementioned heat pipe heat exchange mechanism. Background Technology

[0002] Pet baked food formulas contain a lot of fresh meat and have a high moisture content. Therefore, in the production process, the food first needs to be baked at high temperatures in a baking machine, and then it needs to go into a drying machine to remove the moisture, ultimately meeting the production requirements.

[0003] Currently, the dryer and baking machine are separate components in the equipment. The dryer typically dries the material using hot air, while the baking machine uses direct heating of the material or hot air heating. This separation of drying and baking equipment complicates the process and increases the difficulty of control, management, and maintenance.

[0004] Chinese invention patent with publication number CN118031582A and publication date May 14, 2024 discloses an integrated baking and drying machine and a method for baking and drying materials. The above solution adopts an integrated equipment with the baking machine arranged on top and the dryer below. The baking machine is heated by direct combustion, and the dryer is dried by hot air.

[0005] The above structure presents the following technical problems: First, hot air passes directly through the material, filling the entire baking area. This results in high hot air consumption, high energy consumption, and low hot air utilization efficiency. Furthermore, the direct passage of hot air through the material is similar to drying, removing a significant amount of moisture and negatively impacting the baking effect.

[0006] Secondly, direct-fired electric heating requires a large number of burners and heating tubes to be arranged along the material flow direction, resulting in high energy consumption, complex control, and high cost. Summary of the Invention

[0007] The first objective of this invention is to provide a heat pipe heat exchange mechanism to solve the technical problems of high energy consumption and high hot air consumption in existing baking and drying integrated machines, where hot air directly passes through the material during the baking process, carrying away the moisture from the material.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a heat pipe heat exchange mechanism, characterized in that it includes: The upper heat pipe assembly includes a main heat pipe, an upper main heat pipe, and an upper branch heat pipe, with the upper branch heat pipe disposed between the main heat pipe and the upper main heat pipe; the main heat pipe is connected to the heat source mechanism via an air outlet duct. The lower heat pipe assembly includes a main heat inlet pipe, lower branch heat pipes, and a lower main heat pipe; a plurality of lower branch heat pipes are arranged between the main heat inlet pipe and the lower main heat pipe, and the lower main heat pipe is connected to the upper main heat pipe via a connecting heat pipe; the main heat inlet pipe is connected to the heat source mechanism via an air inlet duct and a fan. The space between the lower heat pipe assembly and the upper heat pipe assembly is used to install a material conveying assembly. The upper heat pipe assembly and the lower heat pipe assembly are used to simultaneously heat the material on the material conveying assembly. The flow direction of the heating medium in the lower heat pipe is opposite to the flow direction of the heating medium in the upper heat pipe. The flow direction of the heating medium in the lower heat pipe is in the same direction as the movement direction of the material on the material conveying assembly. The heating medium is heated by the heat source mechanism and introduced into the main heat inlet pipe. After passing through the lower branch heat pipe, it is collected in the lower main heat pipe, then connected to the upper main heat pipe via the connecting heat pipe, and then collected in the main heat outlet pipe via the upper branch heat pipe and discharged to the heat source mechanism for reheating before entering the cycle.

[0009] This invention utilizes the principle of thermal radiation in its heat exchange structure, which is positioned above and below the material conveying assembly. The heat medium, heated by the heat source mechanism, is then fed into the main heat inlet pipe by a fan, heating the lower heat pipe assembly. The lower heat pipe assembly then bakes the material on the conveyor belt, ensuring no contact between the heating medium and the material. The heat medium is collected via connecting heat pipes and fed to the upper main heat pipe, heating the upper heat pipe assembly. After exiting the main heat outlet pipe, it is recirculated and heated by the fan, significantly improving thermal efficiency, effectively reducing energy consumption, and promoting energy conservation and environmental protection.

[0010] To solve the technical problem of heat loss, the present invention adopts the following technical solution: the upper heat pipe assembly further includes a first heat baffle plate, which is used to better collect heat near the material on the upper conveyor belt.

[0011] To solve the problem of heat loss, the present invention adopts the following technical solution: the lower heat pipe assembly further includes a second heat baffle plate, which is used to better collect heat near the material on the upper conveyor belt.

[0012] To address the technical challenge of arranging the upper and lower heat pipe assemblies, this invention employs the following solution: the main heat outlet pipe is located above the main heat inlet pipe. The upper main heat pipe is located above the lower main heat pipe.

[0013] A second object of the present invention is to provide a baking and drying apparatus, characterized in that it comprises: Drying area; A baking zone is located above the drying zone and is isolated from the drying zone; a first air duct and a second air duct are provided on both sides of the drying zone and the baking zone; The baking zone is equipped with a baking material conveying assembly and a heat pipe heat exchange mechanism as described in any one of claims 1-4; The lower heat pipe assembly is located below the upper conveyor belt of the baking material conveying assembly. The inlet of the main heat inlet pipe of the lower heat pipe assembly extends outside the baking area and is located in the first air duct. The lower heat pipe assembly is connected to the upper heat pipe assembly via a connecting heat pipe. The flow direction of the heating medium in the lower heat pipe assembly is the same as the movement direction of the baking material conveying assembly. The upper heating pipe assembly is located above the upper conveyor belt of the baking material conveying assembly. The outlet of the main heating pipe of the upper heating pipe assembly extends outside the baking area and is located in the second air duct. The flow direction of the heating medium in the upper heating pipe assembly is opposite to the movement direction of the baking material conveying assembly. The heating medium enters through the lower heat pipe assembly, then heats the material along the material conveying direction, then passes through the connecting heat pipe to the upper heat pipe assembly, and then heats the material against the material conveying direction before being discharged.

[0014] The material is laid flat on the baking feed assembly. After the air is heated by the heat source in the upper baking layer of the machine, it is pressurized by the baking layer fan, causing the hot air to descend. It then passes through the baking air inlet duct and enters the baking layer air inlet on the baking heat pipe. The hot air is then distributed from the main heat inlet pipe of the lower heat pipe assembly to each lower branch heat pipe, heating each branch heat pipe. It then goes to the main lower heat pipe at the tail end, passes through the connecting heat pipe, enters the upper main heat pipe of the upper heat pipe assembly at the tail end, and then enters each upper branch heat pipe of the upper heat pipe assembly, heating each branch heat pipe. After that, the hot air is collected at the main heat inlet pipe at the front end, passes through the baking layer air outlet, enters the baking air outlet duct 232, and is then drawn into the upper machine by the baking layer fan, where it is heated and recycled by the baking layer heat source.

[0015] To solve the technical problem of how to separate the air intake and exhaust of the baking area and the drying area within the first air duct, the present invention adopts the following technical solution: a first air duct partition assembly is used to separate the air intake of the baking area from the air exhaust of the drying area. A second air duct baffle assembly is provided in the second air duct to separate the air outlet of the baking zone from the air inlet of the drying zone.

[0016] To address the technical problem of how to implement the first air duct baffle assembly, the present invention adopts the following technical solution: the first air duct baffle assembly includes a first air duct baffle one and a first air duct baffle two; the first air duct baffle one is horizontally disposed below the main heat inlet pipe; the first air duct baffle two is vertically disposed on one side of the main heat inlet pipe; the first air duct baffle one and the first air duct baffle two are used to divide the first air duct into a baking air inlet duct and a drying air outlet duct; The second air duct baffle assembly includes a second air duct baffle one and a second air duct baffle two. The second air duct baffle one is horizontally disposed below the main heat outlet pipe; the second air duct baffle two is vertically disposed on one side of the main heat outlet pipe; the second air duct baffle one and the second air duct baffle two are used to divide the first air duct into a baking air outlet duct and a drying air inlet duct.

[0017] To address the technical problem of how to implement the heating medium in a heat pipe heat exchange mechanism, the present invention adopts the following technical solution: the baking zone further includes a baking heat source mechanism, which is disposed at the top of the baking zone and is used to provide a heating medium to the heat pipe heat exchange mechanism.

[0018] To solve the technical problem of how to arrange the baking heat source mechanism, the present invention adopts the following technical solution: the baking heat source mechanism includes a baking heat source and a baking fan, the baking fan is located above the baking air inlet duct; the baking heat source and the baking fan are arranged diagonally. After being heated by the baking heat source, the air is pressurized by the baking fan, causing the hot air to descend, pass through the baking air inlet duct, enter the main heat inlet pipe, and then bake the material on the conveyor belt through the upper heat pipe assembly. After being discharged from the main heat outlet pipe, the hot air is drawn back into the baking heat source by the baking fan for reheating and then enters the baking cycle.

[0019] To address the technical problem of dissipating the heat generated naturally during baking, the present invention adopts the following technical solution: a vent is provided at the top of the baking zone to discharge the heat generated naturally during baking.

[0020] To solve the technical problem of how the drying zone is implemented, the present invention adopts the following technical solution: the drying zone is provided with an air inlet, an air outlet, and a drying conveying assembly; The air inlet and the air outlet are located on opposite sides of the drying and conveying assembly, respectively. The air inlet is located below the upper conveyor belt of the drying conveyor assembly; the air inlet is located inside the drying air inlet duct; The air outlet is located above the upper conveyor belt of the drying conveyor assembly; the air outlet is located inside the drying air outlet duct.

[0021] To address the technical problem of how to implement the heating medium in the drying zone, the present invention adopts the following technical solution: a drying heat source mechanism is also provided at the top of the baking zone to provide the heating medium to the drying zone; the drying heat source mechanism and the baking heat source mechanism are separated by a partition.

[0022] To solve the technical problem of how to implement the drying heat source mechanism, the present invention adopts the following technical solution: the drying heat source mechanism includes a drying heat source and a drying fan, the drying fan is located above the drying air inlet duct; the drying heat source and the drying fan are arranged diagonally; the drying heat source and the baking heat source are arranged diagonally; the drying fan and the baking fan are arranged diagonally.

[0023] To solve the technical problem of venting humid air generated after drying materials, the present invention adopts the following technical solution: a drying exhaust port is provided at the top of the drying air duct to vent the humid air generated after drying materials. After being heated by the drying heat source, the air is pressurized by the drying fan, causing the hot air to descend, pass through the drying air inlet duct, and enter the air inlet of the drying zone; it passes through the material on the drying conveyor assembly, evaporating the moisture from the material and carrying it away; the hot air containing moisture enters the drying air outlet duct through the air outlet, and the operation of the drying fan creates a negative pressure in the drying air outlet duct, causing the hot air containing moisture to rise. Part of it is drawn out through the drying exhaust port by the external exhaust fan, and part of it is drawn back into the drying heat source by the drying fan for reheating and then enters the drying cycle.

[0024] To solve the technical problem of scattered heat source mechanism and dehumidification port, the present invention adopts the following technical solution: the baking heat source mechanism, the baking dehumidification port, the drying heat source mechanism, and the drying dehumidification port are integrated in the upper casing.

[0025] To address the technical problem of the scattered drying and baking zones, the present invention adopts the following technical solution: the drying and baking zones are integrated within the lower casing; the lower casing is equipped with a material inlet and a material outlet.

[0026] To solve the technical problem of how to arrange the upper and lower heat pipe assemblies, the present invention adopts the following technical solution: both the main heat outlet pipe and the main heat inlet pipe are close to the material inlet. Both the upper main heat pipe and the lower main heat pipe are located at one end of the baking zone, away from the material inlet. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the heat pipe heat exchange mechanism of the present invention; Figure 2 This is a schematic diagram of the structure of the first baffle of the heat pipe heat exchange mechanism of the present invention; Figure 3 This is a front view of the baking and drying apparatus of the present invention; Figure 4 This is a side view of the baking and drying apparatus of the present invention; Figure 5 This is a top view of the baking and drying apparatus of the present invention; Figure 6 The baking and drying apparatus of the present invention is a three-dimensional Figure 1 ; Figure 7 The baking and drying apparatus of the present invention is a three-dimensional Figure 2 ; Figure 8 This is a perspective view of the upper casing of the baking and drying apparatus of the present invention; Figure 9 This is a perspective view of the lower casing of the baking and drying apparatus of the present invention; Figure 10 yes Figure 3 A cross-sectional view along the AA direction; Figure 11 yes Figure 3 Cross-sectional view along the BB direction; Figure 12 yes Figure 3 A cross-sectional view along the CC direction; Figure 13 yes Figure 3 A cross-sectional view along the DD direction; Figure 14 yes Figure 5 Cross-sectional view along the EE direction; Figure 15 It is a diagram illustrating the principles of baking. Figure 16 This is a diagram illustrating the drying principle. In the picture: 10 Baking and Drying Equipment; 100 chassis; 110 Upper chassis frame; 120 Upper chassis frame middle partition; 130 Upper chassis bottom plate; 140 Baking layer fan; 150 Baking layer heat source; 160 Baking layer exhaust port; 170 Drying layer exhaust port; 180 Drying layer heat source; 190 Drying layer fan; 200 chassis; 210 Baking layer; 211 Baking layer air inlet; 212 Baking layer air outlet; 213 Baking layer frame; 2131 Baking layer side panel; 2132 Baking layer bottom plate; 214 Baking material conveying assembly; 215 Baking material conveying assembly baffle; 216 Baking layer partition; 220 Drying layer; 221 Drying layer air outlet; 222 Drying layer air inlet; 223 Drying layer frame; 2231 Drying layer left side plate; 2233 Drying layer right side plate; 2232 Drying layer bottom plate; 224 Drying material conveying assembly; 225 Drying layer partition; 26 Drying material conveying assembly baffle; 231 Baking air inlet; 232 Baking air outlet; 233 Drying air inlet; 234 Drying air outlet; 240 Material inlet; 250 Material outlet; 260 First air duct; 261 First air duct partition 1; 262 First air duct partition 2; 270 Second air duct; 271 Second air duct partition 1; 272 Second air duct partition 2; 280 Baking area; 290 Drying area; 300 Heat pipe heat exchange mechanism; 310 Lower heat pipe assembly; 311 Main heat inlet pipe; 312 Lower branch heat pipe; 313 Lower main heat pipe; 320 Upper heat pipe assembly; 321 Main outlet heat pipe; 322 Upper branch heat pipe; 323 Upper main heat pipe; 330 Connecting heat pipe; 340 First heat baffle plate; Detailed Implementation

[0028] The invention will now be further described with reference to the accompanying drawings.

[0029] Example 1 like Figure 1 As shown, the heat pipe heat exchange mechanism 300 includes a lower heat pipe assembly 310, an upper heat pipe assembly 320, and a connecting heat pipe 330.

[0030] The lower heat pipe assembly 310 includes a main heat inlet pipe 311, a lower branch heat pipe 312, and a lower main heat pipe 313; a plurality of lower branch heat pipes 312 are arranged between the main heat inlet pipe 31 and the lower main heat pipe 313; the main heat inlet pipe 311 is connected to the heat source mechanism via an air inlet duct and a fan.

[0031] The upper heat pipe assembly 320 includes a main heat outlet pipe 321, upper branch heat pipes 322, and an upper main heat pipe 323. Several upper branch heat pipes 323 are arranged between the main heat outlet pipe 321 and the upper main heat pipe 323. The upper main heat pipe 323 is connected to the lower main heat pipe 313 via a connecting heat pipe 330. The main heat outlet pipe 311 is connected to the heat source mechanism via an air outlet duct.

[0032] The space between the lower heat pipe assembly 310 and the upper heat pipe assembly 320 is used to install the material conveying assembly. The upper heat pipe assembly 320 and the lower heat pipe assembly 310 are used to simultaneously heat the material on the material conveying assembly. The heating medium flow direction of the lower branch heat pipe 312 is opposite to the heating medium flow direction of the upper branch heat pipe 322; the heating medium flow direction of the lower branch heat pipe 312 is in the same direction as the material movement direction on the material conveying assembly.

[0033] The heating medium is heated by the heat source mechanism and introduced into the main heat inlet pipe. After passing through the lower branch heat pipe, it is collected in the lower main heat pipe. Then it is connected to the upper main heat pipe through the connecting heat pipe. After passing through the upper branch heat pipe, it is collected in the main heat outlet pipe and discharged to the heat source mechanism for reheating before entering the cycle.

[0034] In one embodiment, such as Figure 2As shown, the upper heat pipe assembly 320 also includes a first heat baffle 340 for better concentrating heat near the material on the upper conveyor belt. Specifically, the upper heat pipe assembly 320 is covered with a first heat baffle 340 to better concentrate heat near the material on the conveyor belt.

[0035] In one embodiment, the lower heat pipe assembly 310 further includes a second heat baffle plate for better concentrating heat near the material on the upper conveyor belt.

[0036] In one embodiment, the main heat pipe 321 is located above the main heat pipe 311, and the upper main heat pipe 323 is located above the lower main heat pipe 313.

[0037] Example 2 like Figure 14 As shown, the baking and drying apparatus 10 includes a drying zone 290 and a baking zone 280. The baking zone 280 is located above the drying zone 290 and is isolated from the drying zone 290.

[0038] like Figure 9 As shown, a first air duct 260 and a second air duct 270 are provided on both sides of the drying zone 290 and the baking zone 280.

[0039] like Figure 14 As shown, a baking feed assembly 214 and a heat pipe heat exchange mechanism 300 of any one of Embodiment 1 are provided in the baking zone 280.

[0040] The lower heat pipe assembly 310 is located below the upper conveyor belt of the baking material conveying assembly 214. The inlet of the main heat inlet pipe 311 of the lower heat pipe assembly 310 extends out of the baking zone 280 and is located in the first air duct 260. The lower heat pipe assembly 310 is connected to the upper heat pipe assembly 320 via the connecting heat pipe 330. The flow direction of the heating medium in the lower heat pipe assembly 310 is set in the same direction as the movement direction of the baking material conveying assembly 214.

[0041] The upper heating pipe assembly 320 is positioned above the upper conveyor belt of the baking material conveying assembly 314. The outlet of the main heating pipe 321 of the upper heating pipe assembly 320 extends outside the baking 280 zone and is located inside the second air duct 270. The flow direction of the heating medium in the upper heating pipe assembly 320 is opposite to the movement direction of the baking material conveying assembly 314.

[0042] The heating medium enters through the lower heat pipe assembly 310, then heats the material along the material conveying direction, then passes through the connecting heat pipe 330 to the upper heat pipe assembly 320, and then heats the material against the material conveying direction before being discharged.

[0043] In one embodiment, such as Figure 9As shown, the first air duct 260 contains a first air duct baffle assembly, which is used to separate the air intake of the baking area from the air outlet of the drying area. Specifically, the first air duct baffle assembly includes a first air duct baffle 261 and a first air duct baffle 262. The first air duct baffle 261 is horizontally arranged below the main heat inlet pipe 311; the first air duct baffle 262 is vertically arranged on one side of the main heat inlet pipe 311; the first air duct baffle 261 and the first air duct baffle 262 are used to divide the first air duct into a baking air inlet duct 231 and a drying air outlet duct 234.

[0044] In one embodiment, such as Figure 7 As shown, a second air duct baffle assembly is installed within the second air duct 270 to separate the air outlet of the baking zone from the air inlet of the drying zone. Specifically, the second air duct baffle assembly includes a first second air duct baffle 271 and a second second air duct baffle 272. The first second air duct baffle 271 is horizontally positioned below the main heat outlet pipe; the second second air duct baffle 272 is vertically positioned on one side of the main heat outlet pipe. The first second air duct baffle 271 and the second second second air duct baffle 272 are used to divide the first air duct 270 into a baking air outlet duct 232 and a drying air inlet duct 233.

[0045] In one embodiment, the baking zone 280 further includes a baking heat source mechanism disposed at the top of the baking zone 280 for providing a heating medium to the heat pipe heat exchange mechanism.

[0046] In one embodiment, such as Figure 8 , Figure 11 As shown, the baking heat source mechanism includes a baking layer heat source 150 and a baking layer fan 140, with the baking fan 140 located above the baking air inlet duct; the baking layer heat source 150 and the baking layer fan 140 are arranged diagonally.

[0047] After the air is heated by the baking layer heat source 150, it is pressurized by the baking layer fan 140, causing the hot air to descend, pass through the baking air inlet duct 231, enter the main heat inlet pipe 311, and then bake the material on the conveyor belt through the upper heat pipe assembly 310. The hot air is discharged from the main heat outlet pipe 321 and then discharged through the branch baking air outlet duct 232. After being drawn by the baking layer fan 140 into the baking layer heat source 150 for reheating, it enters the baking cycle.

[0048] In one embodiment, such as Figure 6 , Figure 8 , Figure 10 As shown, a baking layer vent 160 is provided at the top of the baking area to exhaust the heat generated naturally during the baking process.

[0049] In one embodiment, such as Figure 6 , Figure 7 , Figure 14 As shown, the drying zone is equipped with a drying layer air inlet 222, a drying layer air outlet 221, and a drying material conveying assembly 224.

[0050] The air inlet 222 and the air outlet 221 of the drying layer are located on both sides of the drying conveying assembly 224.

[0051] The drying layer air inlet 222 is located below the upper conveyor belt of the drying conveyor assembly 224; the drying layer air inlet is located inside the drying air inlet duct.

[0052] The drying layer air outlet 221 is located above the upper conveyor belt of the drying conveyor assembly 224; the drying layer air outlet is located inside the drying air outlet duct.

[0053] In one embodiment, a drying heat source mechanism is also provided on the top of the baking zone 280 for providing a heating medium to the drying zone; the drying heat source mechanism and the baking heat source mechanism are separated by a partition.

[0054] Specifically, such as Figure 8 , Figure 12 As shown, the drying heat source mechanism includes a drying layer heat source 180 and a drying layer fan 190, with the drying layer fan 190 located above the drying air inlet duct; the drying layer heat source 180 and the drying layer fan 190 are arranged diagonally; the drying layer heat source 180 and the baking layer heat source 150 are arranged diagonally; the drying layer fan 190 and the baking layer fan 150 are arranged diagonally.

[0055] In one embodiment, such as Figure 7 , Figure 8 , Figure 13 As shown, a drying exhaust port 170 is provided at the top of the drying air duct to discharge the humid air generated after the material is dried. After being heated by the drying heat source, the air is pressurized by the drying fan, causing the hot air to descend, pass through the drying air inlet duct, and enter the air inlet of the drying zone; it passes through the material on the drying conveyor assembly, evaporating the moisture from the material and carrying it away; the hot air containing moisture enters the drying air outlet duct through the air outlet, and the operation of the drying fan creates a negative pressure in the drying air outlet duct, causing the hot air containing moisture to rise. Part of it is discharged through the drying exhaust port by the external exhaust fan, and part of it is drawn back into the drying heat source by the drying fan for reheating and then enters the drying cycle. In one embodiment, such as Figure 3 , Figure 4 As shown, the baking and drying device 10 also includes a lower casing 200. The drying zone 280 and the baking zone 290 are integrated within the lower casing 200; the lower casing 200 is provided with a material inlet 240 and a material outlet 250.

[0056] Specifically, such as Figure 9As shown, the lower casing 200 includes a baking layer 210, a drying layer 220, a baking and drying air duct partition 230, a material inlet 240, a material outlet 250, a first air duct 280, and a second air duct 290.

[0057] The baking layer 210 is on top, and the drying layer 220 is on the bottom. The air duct partition separates the air inlet and outlet of the baking layer from that of the drying layer, so that they do not interfere with each other.

[0058] like Figure 6 , Figure 7 , Figure 10 , Figure 14 As shown, the baking layer 210 includes a baking layer air inlet 211, a baking layer air outlet 212, a baking layer frame 213, a baking material conveying assembly 214, a baking material conveying assembly baffle 215, a baking layer partition 216, and a heat pipe type heat exchange mechanism 300. The inner sides of the baking layer frame 213 include baking layer side plates 2131 and a baking layer bottom plate 2132.

[0059] The baking layer side plate 2131, the baking layer partition plate 216, the baking material conveying component baffle 215, the baking layer bottom plate 2132, and the upper chassis bottom plate 130 constitute the closed cavity baking area 280.

[0060] The baking layer side panel 2131, the outer side of the baking layer frame 213, the first air duct partition 261, and the second air duct partition 262 constitute the baking air inlet duct 231. The baking layer side panel 2131, the outer side of the baking layer frame 213, the first air duct partition 271, and the second air duct partition 272 constitute the baking air outlet duct 232.

[0061] The lower heat pipe assembly 310 is located below the baking feed assembly 214, and the upper heat pipe assembly 320 is located above the baking feed assembly 214.

[0062] The drying layer 220 includes a drying layer air outlet 221, a drying layer air inlet 222, a drying layer frame 223, a drying material conveying assembly 224, a drying layer partition 225, and a drying material conveying assembly baffle 226. The drying layer frame 223 internally includes a left drying layer plate 2231, a right drying layer plate 2233, and a drying layer bottom plate 2232. The drying layer partition 225, the drying material conveying assembly baffle 226, the left drying layer plate 2231, the right drying layer plate 2233, and the drying layer bottom plate 2232, together with the baking layer bottom plate, form a closed cavity drying area 290.

[0063] The left side panel 2231 of the drying layer, the drying layer frame 223, the first second air duct partition 271, and the second second air duct partition 272 constitute the air inlet duct 233 of the drying layer. The right side panel 2233 of the drying layer, the drying layer frame 223, the first first air duct partition 261, and the second first air duct partition 262 constitute the air outlet duct of the drying layer.

[0064] In one embodiment, the main heat outlet pipe 321 and the main heat inlet pipe 311 are both close to the material inlet 240; the upper main heat pipe 323 and the lower main heat pipe 313 are both located at one end of the baking zone away from the material inlet 240.

[0065] In one embodiment, such as Figure 3 , Figure 4 , Figure 5 As shown, the baking and drying device 10 also includes an upper housing 100. The baking heat source mechanism, the baking layer exhaust port 160, the drying heat source mechanism, and the drying layer exhaust port 170 are integrated within the upper housing 100.

[0066] Specifically, such as Figure 8 As shown, the upper chassis 100 includes an upper chassis frame 110, an upper chassis frame middle partition 120, an upper chassis bottom plate 130, a baking layer fan 140, a baking layer heat source 150, a baking layer exhaust port 160, a drying layer exhaust port 170, a drying layer heat source 180, and a drying layer fan 190.

[0067] The baking layer fan 150 and the baking layer heat source 140 constitute the baking heat source mechanism.

[0068] The drying layer fan 190 and the drying layer heat source 180 together form the drying heat source mechanism. A partition 120 separates the baking heat source mechanism from the drying heat source mechanism, ensuring that the two parts are independent and do not interfere with each other. The baking layer fan 140 is preferably a centrifugal fan. The baking layer fan 140 draws in air that has been heated by the heat source, pressurizes it, and then enters the baking layer air inlet 211 of the lower casing 200.

[0069] The drying layer fan 190 is preferably a centrifugal fan. The drying layer fan 190 draws in air that has been heated by a heat source, pressurizes it, and then enters the drying layer air inlet 222 of the lower casing 200.

[0070] The exhaust vent 160 of the baking layer passes through the bottom plate 130 of the upper casing and communicates with the baking zone 280, used to exhaust the heat generated naturally during the drying process of the materials. The exhaust vent 170 of the drying layer communicates with the air outlet 221 of the drying zone, used to exhaust the humid air generated after the materials are dried.

[0071] This invention consists of two parts: an upper chassis and a lower chassis; it features an integrated baking and drying design, including a baking zone and a drying zone; it uses a single device to achieve both baking and drying functions, while simplifying the process and control flow and reducing equipment investment costs.

[0072] The baking zone is on top, and the drying zone is below. The heat source system is located in the upper casing at the top of the equipment, while the baking and drying zones are in the lower casing, and a conveyor belt is installed to transport the materials.

[0073] The baking zone utilizes the principle of thermal radiation, employing baking heat pipes positioned above and below the conveyor belt. Air, heated by the heat source system in the upper casing of the baking zone, is then fed into the heat pipes by the fan in the upper casing, further heating the heat pipes and then baking the materials on the conveyor belt. After exiting the hot air duct, the hot air is recirculated and heated by a circulating fan for reuse. The hot air in the baking zone does not come into contact with the materials.

[0074] A vent is installed at the top of the baking area frame to exhaust exhaust gases.

[0075] The drying zone is located on the lower level, completely isolated from the baking zone. The drying zone has inlet and outlet vents, located on the upper and lower sides of the conveyor belt. Hot air from the upper chamber is drawn into the drying zone's inlet by a circulating fan, passing through the material on the conveyor belt. After drying, the material's moisture is evaporated and carried away. The remaining hot air containing moisture is partially exhausted through the drying exhaust vent in the upper chamber, while the remainder is recycled, reheated, and re-enters the drying cycle to reduce energy consumption.

[0076] The specific operation process of the baking and drying equipment: The material enters the upper baking zone through the feed inlet onto the conveyor belt, where it is first baked. Then, it falls to the drying conveyor assembly at the end of the baking layer, enters the drying zone to be dried and dehydrated, and is discharged from the outlet to enter other sections.

[0077] like Figure 15 As shown, the baking process is as follows: The material is spread flat on the baking feeding assembly. After the air is heated by the heat source of the baking layer in the upper chamber, it is pressurized by the baking layer fan, causing the hot air to descend. It passes through the baking air inlet duct 231 and enters the baking layer air inlet on the baking heat pipe. Then, the hot air is distributed from the main heat inlet pipe of the lower heat pipe assembly to each lower branch heat pipe, heating each lower branch heat pipe. Then, it goes to the main lower heat pipe at the tail end, passes through the connecting heat pipe, enters the upper main heat pipe of the upper heat pipe assembly at the tail end, and then enters each upper branch heat pipe of the upper heat pipe assembly, heating each upper branch heat pipe. After heating each upper branch heat pipe, the hot air is collected at the main heat inlet pipe at the front end, passes through the baking layer air outlet, enters the baking air outlet duct 232, and is then drawn into the upper chamber by the baking layer fan, where it is heated and recycled by the baking layer heat source.

[0078] The material on the baking feed assembly is heated and baked at high temperatures by the lower and upper heat pipes to meet the baking requirements. The upper and lower heat pipe assemblies are placed on the upper and lower layers of the baking feed assembly, respectively. The upper and lower heat pipes of the heat pipe heat exchange mechanism are evenly arranged to ensure uniform baking of the material.

[0079] like Figure 16As shown, the drying process is as follows: After baking, the material falls onto the drying conveyor assembly and enters the drying zone for further drying. Air, heated by the heat source in the upper drying zone, is pressurized by the drying zone fan, causing the hot air to descend and enter the drying inlet duct 233 on the drying layer's inlet side. The hot air then penetrates the material on the drying conveyor assembly, evaporating and carrying away moisture. It then exits from the drying layer outlet and enters the drying outlet duct 234 on the outlet side. Because the drying layer fan creates negative pressure in the outlet duct, the hot air rises. Part of it is exhausted from the equipment by the external exhaust fan through the drying layer's exhaust port, while the other part is drawn back into the upper chamber by the drying layer fan, reheated by the drying layer's heat source, and then enters the drying cycle. This improves thermal efficiency and reduces energy consumption.

[0080] The above embodiments are only for illustrating the technical features and concepts of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made according to the spirit and embodiments of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A baking and drying apparatus, characterized in that, include: Drying area; A baking zone is located above the drying zone and is isolated from the drying zone; A first air duct and a second air duct are provided on both sides of the drying zone and the baking zone; The baking area is equipped with a baking material conveying assembly and a heat pipe heat exchange mechanism. The heat pipe heat exchange mechanism includes: The upper heat pipe assembly includes a main heat pipe, an upper main heat pipe, and an upper branch heat pipe, with the upper branch heat pipe disposed between the main heat pipe and the upper main heat pipe; the main heat pipe is connected to the heat source mechanism via an air outlet duct. The lower heat pipe assembly includes a main heat inlet pipe, lower branch heat pipes, and a lower main heat pipe; a plurality of lower branch heat pipes are arranged between the main heat inlet pipe and the lower main heat pipe, and the lower main heat pipe is connected to the upper main heat pipe via a connecting heat pipe; the main heat inlet pipe is connected to the heat source mechanism via an air inlet duct and a fan. The space between the lower heat pipe assembly and the upper heat pipe assembly is used to install a material conveying assembly. The upper heat pipe assembly and the lower heat pipe assembly are used to simultaneously heat the material on the material conveying assembly. The flow direction of the heating medium in the lower heat pipe is opposite to the flow direction of the heating medium in the upper heat pipe. The flow direction of the heating medium in the lower heat pipe is in the same direction as the movement direction of the material on the material conveying assembly. The heating medium is heated by the heat source mechanism and introduced into the main heat inlet pipe. After passing through the lower branch heat pipe, it is collected in the lower main heat pipe. Then, it is connected to the upper main heat pipe through the connecting heat pipe. After passing through the upper branch heat pipe, it is collected in the main heat outlet pipe and discharged to the heat source mechanism for reheating before entering the cycle. The lower heat pipe assembly is located below the upper conveyor belt of the baking material conveying assembly. The inlet of the main heat inlet pipe of the lower heat pipe assembly extends outside the baking area and is located in the first air duct. The lower heat pipe assembly is connected to the upper heat pipe assembly via a connecting heat pipe. The flow direction of the heating medium in the lower heat pipe assembly is the same as the movement direction of the baking material conveying assembly. The upper heating pipe assembly is located above the upper conveyor belt of the baking material conveying assembly. The outlet of the main heating pipe of the upper heating pipe assembly extends outside the baking area and is located in the second air duct. The flow direction of the heating medium in the upper heating pipe assembly is opposite to the movement direction of the baking material conveying assembly. The heating medium enters through the lower heat pipe assembly, then heats the material along the material conveying direction, then passes through the connecting heat pipe to the upper heat pipe assembly, and then heats the material against the material conveying direction before being discharged.

2. The baking and drying apparatus according to claim 1, characterized in that, The upper heat pipe assembly also includes a first heat baffle plate, which is used to better concentrate heat near the material on the upper conveyor belt.

3. The baking and drying apparatus according to claim 1 or 2, characterized in that, The lower heat pipe assembly also includes a second heat baffle plate, which is used to better concentrate heat near the material on the upper conveyor belt.

4. The baking and drying apparatus according to claim 1, characterized in that, The main heat outlet pipe is located above the main heat inlet pipe. The upper main heat pipe is located above the lower main heat pipe.

5. The baking and drying apparatus according to claim 1, characterized in that, The first air duct baffle assembly is used to separate the air intake of the baking zone from the air outlet of the drying zone. A second air duct baffle assembly is provided in the second air duct to separate the air outlet of the baking zone from the air inlet of the drying zone.

6. The baking and drying apparatus according to claim 5, characterized in that, The first air duct baffle assembly includes a first air duct baffle one and a first air duct baffle two. The first air duct baffle one is horizontally disposed below the main heat inlet pipe; the first air duct baffle two is vertically disposed on one side of the main heat inlet pipe; the first air duct baffle one and the first air duct baffle two are used to divide the first air duct into a baking air inlet duct and a drying air outlet duct. The second air duct baffle assembly includes a second air duct baffle one and a second air duct baffle two. The second air duct baffle one is horizontally disposed below the main heat outlet pipe; the second air duct baffle two is vertically disposed on one side of the main heat outlet pipe; the second air duct baffle one and the second air duct baffle two are used to divide the first air duct into a baking air outlet duct and a drying air inlet duct.

7. The baking and drying apparatus according to claim 6, characterized in that, The baking zone also includes a baking heat source mechanism, which is located at the top of the baking zone and is used to provide a heating medium to the heat pipe heat exchange mechanism.

8. The baking and drying apparatus according to claim 7, characterized in that, The baking heat source mechanism includes a baking heat source and a baking fan, with the baking fan located above the baking air inlet duct; the baking heat source and the baking fan are arranged diagonally. After being heated by the baking heat source, the air is pressurized by the baking fan, causing the hot air to descend, pass through the baking air inlet duct, enter the main heat inlet pipe, and then bake the material on the conveyor belt through the upper heat pipe assembly. After being discharged from the main heat outlet pipe, the hot air is drawn back into the baking heat source by the baking fan for reheating and then enters the baking cycle.

9. The baking and drying apparatus according to claim 1, characterized in that, The top of the baking area is equipped with a vent to release the heat generated naturally during the baking process.

10. The baking and drying apparatus according to claim 6, characterized in that, The drying zone is equipped with an air inlet, an air outlet, and a drying conveyor assembly; The air inlet and the air outlet are located on opposite sides of the drying and conveying assembly, respectively. The air inlet is located below the upper conveyor belt of the drying conveyor assembly; the air inlet is located inside the drying air inlet duct; The air outlet is located above the upper conveyor belt of the drying conveyor assembly; the air outlet is located inside the drying air outlet duct.

11. The baking and drying apparatus according to claim 7, characterized in that, The top of the baking zone is also provided with a drying heat source mechanism for providing a heating medium to the drying zone; the drying heat source mechanism and the baking heat source mechanism are separated by a partition.

12. The baking and drying apparatus according to claim 11, characterized in that, The drying heat source mechanism includes a drying heat source and a drying fan, the drying fan being located above the drying air inlet duct; the drying heat source and the drying fan are arranged diagonally; the drying heat source and the baking heat source are arranged diagonally; the drying fan and the baking fan are arranged diagonally.

13. The baking and drying apparatus according to claim 12, characterized in that, The top of the drying air outlet is provided with a drying dehumidification port to discharge the humid air generated after the material is dried; After being heated by the drying heat source, the air is pressurized by the drying fan, causing the hot air to descend, pass through the drying air inlet duct, and enter the air inlet of the drying zone; it passes through the material on the drying conveyor assembly, evaporating the moisture from the material and carrying it away; the hot air containing moisture enters the drying air outlet duct through the air outlet, and the operation of the drying fan creates a negative pressure in the drying air outlet duct, causing the hot air containing moisture to rise. Part of it is drawn out through the drying exhaust port by the external exhaust fan, and part of it is drawn back into the drying heat source by the drying fan for reheating and then enters the drying cycle.

14. The baking and drying apparatus according to claim 13, characterized in that, The baking heat source mechanism, the baking dehumidification port, the drying heat source mechanism, and the drying dehumidification port are integrated in the upper casing.

15. The baking and drying apparatus according to claim 13, characterized in that, The drying zone and the baking zone are integrated in the lower casing; the lower casing is equipped with a material inlet and a material outlet.

16. The baking and drying apparatus according to claim 15, characterized in that, Both the main heat outlet pipe and the main heat inlet pipe are located near the material inlet. Both the upper main heat pipe and the lower main heat pipe are located at one end of the baking zone, away from the material inlet.

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