Drying apparatus heat exchanger with easy cleaning

Abstract

The application provides a drying equipment heat exchanger convenient to clean, and relates to the field of heat exchangers, which comprises a shell, a wet air inlet and a dry air outlet arranged on the shell, a heat exchange module movably arranged in the shell, the heat exchange module comprising a frame and a heat exchange tube bundle arranged in the frame, a flow guide structure arranged on the heat exchange tube bundle, the flow guide structure comprising a plurality of first flow guide plates and second flow guide plates alternately inclined along the air flow direction, a space between the first flow guide plates and the second flow guide plates forming a main channel, the first flow guide plates and the second flow guide plates being provided with notches for ash falling, and a collection structure detachably arranged at the bottom of the shell, the collection structure comprising a collection groove located directly below the flow guide structure and a flow guide surface arranged on the collection groove, the flow guide surface being inclined towards the inside of the collection groove. The application realizes the unification of efficient heat exchange, automatic ash cleaning, convenient maintenance and reliable operation, helps to reduce the system energy consumption, and guarantees the continuous and stable production of the drying process.

Description

Technical Field

[0001] This invention relates to the field of heat exchangers, and more particularly to a heat exchanger for a drying device that is easy to clean. Background Technology

[0002] Heat exchangers are the core heat exchange units in industrial drying equipment, and their heat transfer efficiency and channel unobstructed flow directly affect the energy consumption and production stability of the drying system. In various powder, fiber, or slurry drying processes, high-temperature air carrying a large amount of dust and moisture flows across the surface of the heat exchange tube bundle to complete heat exchange. This process easily leads to the continuous accumulation of dust on the heat exchange surface and in the airflow channels. Therefore, heat exchangers must be able to withstand high dust loads for extended periods and be able to efficiently and thoroughly remove accumulated dust during maintenance to ensure continuous and efficient heat exchange performance and equipment safety.

[0003] Traditional heat exchangers in drying equipment often face challenges in terms of inconvenient operation and limited effectiveness in cleaning accumulated ash. Conventional cleaning typically requires a complete system shutdown and relies on external manual labor or equipment to clean the heat exchange tube bundles, a time-consuming process with blind spots. Built-in fixed flow guiding elements, after ash accumulation, may actually obstruct airflow or become new ash accumulation points, lacking a design to promote self-removal of ash. Simultaneously, dust collection systems are usually fixed to the main structure, limiting the cleaning operation space and hindering rapid cleaning. Furthermore, the sealing and positioning methods of the heat exchange modules may affect the airtightness of reassembly after maintenance, posing a risk of leakage. The overall maintenance process significantly disrupts production continuity. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a heat exchanger for drying equipment that is easy to clean, in view of the above-mentioned defects in the prior art.

[0005] In order to overcome the above-mentioned defects of the prior art, embodiments of the present invention provide a heat exchanger for a drying device that is easy to clean, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A heat exchanger for a drying device that is easy to clean includes: a shell and a humid air inlet and a dry air outlet disposed on the shell, and further includes: A heat exchange module is movably disposed within the housing, the heat exchange module including a frame and a heat exchange tube bundle disposed within the frame; A flow guiding structure is provided on the heat exchange tube bundle. The flow guiding structure includes a plurality of first flow guiding vanes and second flow guiding vanes that are alternately inclined along the airflow direction. The space between the first flow guiding vanes and the second flow guiding vanes forms a main channel. The first flow guiding vanes and the second flow guiding vanes are provided with notches for ash to fall off. A collection structure is detachably disposed at the bottom of the housing. The collection structure includes a collection groove located directly below the flow guiding structure and a flow guiding surface disposed in the collection groove, the flow guiding surface being inclined toward the interior of the collection groove.

[0007] Preferably, the notch is located on the leeward side of the first guide vane and the second guide vane; Both the first guide vane and the second guide vane have a guide arc surface on their windward side edge; A dust accumulation groove is formed between the bottom edges of the first and second guide vanes and the tube wall of the heat exchange tube bundle; Both the first guide vane and the second guide vane are provided with turbulence protrusions.

[0008] Preferably, the bottom of the ash collection trough is provided with a flow guiding opening; The ash collection trough is provided with a guide ridge, which extends along the length of the ash collection trough and is used to guide the dirt from the first guide plate and the second guide plate to the guide opening.

[0009] Preferably, the notch separates the first guide vane and the second guide vane into multiple independent guide segments; The notches on adjacent first and second guide vanes are staggered in the extension direction of the main channel; The leeward side surfaces of the first and second guide vanes are provided with a dust-reducing layer.

[0010] Preferably, the frame is provided with guide wheels; The inner wall of the housing is provided with a guide rail that cooperates with the guide wheel; The frame is provided with an inflatable and deflated sealed bladder in its circumferential direction.

[0011] Preferably, the frame is further provided with an inflation / deflation valve communicating with the sealing bladder; The frame is provided with a mounting groove corresponding to the position of the sealing bladder; The outer surface of the sealing bladder is provided with a wear-resistant layer.

[0012] Preferably, the collection structure further includes a dust collection box that can be pulled out and disposed in the collection trough, and a drain outlet is provided at the bottom of the dust collection box; The dust collection box is equipped with a filter screen on its side wall; The bottom of the guide surface is connected to the sewage outlet.

[0013] Preferably, a slide rail is provided on the side wall of the collection tank, and the dust collection box is slidably disposed on the slide rail; The dust collection box is provided with a limiting block for restricting the sliding position of the dust collection box; The slide rail has a slot. When the dust collection box slides to the preset position, that is, when the dust collection box slides to the working position, the limiting block is embedded in the slot.

[0014] Preferably, the housing is provided with an inspection door; The inspection door is equipped with an observation window and a handle; The access door is rotatably connected to the housing via a hinge; The inspection door is also equipped with a door status sensor.

[0015] Preferably, the frame is provided with a locking mechanism; The locking mechanism includes a latch movably disposed on the frame and an operating element for driving the latch to extend or retract.

[0016] Preferably, the locking mechanism includes a latch that is slidably disposed on the frame and an operating component for driving the latch to extend or retract.

[0017] The present invention adopts the above technical solution and has the following technical effects compared with the prior art: 1. Easy maintenance: The movable heat exchange module and pull-out dust collection box design eliminate the need for complicated disassembly to clean the core components and remove dust accumulation, significantly simplifying maintenance operations.

[0018] 2. Strong self-cleaning ability: The unique flow guide plate structure, surface turbulence design and dust collection groove flow guide opening can effectively promote the automatic peeling and directional collection and discharge of dust under the action of airflow, reducing the frequency of manual cleaning.

[0019] 3. Reliable sealing: The inflatable and deflated sealing bladder enables the heat exchange module to be elastically sealed during operation and easily separated during maintenance, ensuring airtightness and preventing wear.

[0020] 4. Controllable status: The observation window and status sensor on the inspection door facilitate intuitive monitoring of the internal condition and door status, improving the safety of equipment operation and the convenience of management.

[0021] 5. Secure connection: The independent locking mechanism can quickly lock the heat exchange module in the working position, preventing it from moving accidentally during operation and ensuring a secure and safe connection. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a heat exchanger for a drying device that is easy to clean, according to the present invention. Figure 2 This is a schematic diagram of the interior of the heat exchanger shell of a drying device that is easy to clean according to the present invention; Figure 3This is a schematic diagram of a heat exchange module of a drying equipment heat exchanger that is easy to clean, according to the present invention. Figure 4 This is a schematic diagram of the frame and locking mechanism of a heat exchanger for a drying device that is easy to clean, according to the present invention. Figure 5 This is a schematic diagram of the collection structure of a heat exchanger in a drying device that is easy to clean, according to the present invention. Figure 6 This is a schematic diagram of the shell of a heat exchanger for a drying device that is easy to clean, according to the present invention. Figure 7 This is a schematic diagram of the flow guiding structure and heat exchange tube bundle of a heat exchanger for a drying equipment that is easy to clean, according to the present invention. Figure 8 This is a schematic diagram of a dust collection box for a heat exchanger in a drying device that is easy to clean, according to the present invention. Figure 9 This is a schematic diagram of the limiting block and slot of a heat exchanger in a drying device that is easy to clean, according to the present invention.

[0023] The reference numerals in the attached drawings are as follows: 1. Shell; 101. Humid air inlet; 102. Dry air outlet; 103. Guide rail; 2. Heat exchange module; 201. Frame; 202. Heat exchange tube bundle; 203. Guide wheel; 204. Sealing bladder; 205. Inflation / discharge valve; 206. Mounting groove; 207. Wear-resistant layer; 3. Flow guiding structure; 301. First flow guide vane; 302. Second flow guide vane; 303. Main channel; 304. Notch; 305. Flow guiding arc surface; 306. Ash collection groove; 307. 308. Turbulence protrusion; 309. Guide opening; 310. Guide ridge; 311. Guide section; 312. Dust-removing layer; 4. Collection structure; 401. Collection trough; 402. Guide surface; 403. Dust collection box; 404. Drain outlet; 405. Filter screen; 406. Slide rail; 407. Limit block; 408. Slot; 5. Inspection door; 501. Observation window; 502. Handle; 503. Hinge; 504. Door status sensor; 6. Locking mechanism; 601. Lock tongue; 602. Operating component. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0025] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Example 1

[0027] As attached Figures 1 to 9The diagram illustrates a heat exchanger for an easy-to-clean drying device. A housing 1 provides support and enclosed space for the overall structure. A humid air inlet 101 and a dry air outlet 102 are respectively located at both ends of the housing 1 to guide unidirectional airflow. Guide rails 103 are fixedly installed on both sides of the inner wall of the housing 1. The heat exchange module 2 is slidably installed relative to the housing 1 by engaging with the guide rails 103 inside the housing 1 via guide wheels 203. A frame 201 serves as the main support for the heat exchange tube bundle 202 and the flow guiding structure 3. The guide wheels 203 on its edges can roll along the guide rails 103. When the heat exchange module 2 requires maintenance, the operator can apply a pulling force to move it out of the housing 1 along the guide rails 103. The heat exchange tube bundle 202 is fixedly installed inside the frame 201, forming the core heat exchange surface. Heat exchange occurs when airflow passes through the inter-tube area of ​​the heat exchange tube bundle 202. An inflatable and deflated sealed bladder 204 surrounds the frame. The frame 201 is arranged circumferentially and connected to an external air source through an inflation / deflation valve 205. The root of the sealing bladder 204 is embedded in a specially opened mounting groove 206 on the frame 201 for fixation. The outer surface of the sealing bladder 204 is covered with a wear-resistant layer 207. When the heat exchange module 2 is pushed into the housing 1 to the working position, the sealing bladder 204 is inflated through the inflation / deflation valve 205. The sealing bladder 204 expands, causing the wear-resistant layer 207 on its outer surface to press tightly against the inner wall of the housing 1, forming an annular seal to prevent airflow leakage from the gaps. At this time, the cooperation between the guide wheel 203 and the guide rail 103 mainly serves for radial positioning and load bearing. When the heat exchange module 2 needs to be pulled out, the gas in the sealing bladder 204 is released through the inflation / deflation valve 205. The sealing bladder 204 contracts, and the wear-resistant layer 207 disengages from the inner wall of the housing 1. At this time, the cooperation between the guide wheel 203 and the guide rail 103 allows the entire module to be smoothly pulled out.

[0028] The flow guiding structure 3 is integrally installed in the inter-tube region of the heat exchange tube bundle 202. Multiple first flow guiding vanes 301 and second flow guiding vanes 302 are arranged alternately, both of which are set as inclined plate structures with opposite inclination directions, thereby enclosing a meandering main channel 303 between adjacent first flow guiding vanes 301 and second flow guiding vanes 302. The main channel 303 is used to guide the airflow to scour the surface of the heat exchange tube bundle 202 at a specific angle. Notches 304 are opened on the plates of the first flow guiding vanes 301 and second flow guiding vanes 302. The notch 304 divides the originally continuous guide vane into multiple independent guide segments 310. Each guide segment 310 has a reinforced flange at its end to enhance its rigidity. The notches 304 on adjacent first guide vanes 301 and second guide vanes 302 are staggered in the extension direction of the main channel 303, making the airflow path more complex. All guide vanes have a smoothly transitioned guide arc surface 305 on their windward edges. The guide arc surface 305 is used to guide the airflow smoothly into the main channel 303. Each guide section 310 has multiple turbulence protrusions 307 evenly distributed on its plate surface; the leeward side surface of the guide vane is coated with a dust-reducing layer 311; between the roots of adjacent first guide vanes 301 and second guide vanes 302, a dust collection groove 306 extending along the length of the heat exchange tube bundle 202 is fixedly installed on the heat pipe wall; the cross-section of the dust collection groove 306 is V-shaped or U-shaped, and a guide opening 308 is opened along the entire length of its bottom, with protruding guide ridges formed on both sides of the groove wall of the guide opening 308. 309; When the dust-laden airflow passes through the main channel 303, it is first guided by the guide arc surface 305, and then turbulent by the turbulence protrusion 307 to generate vortices. The combined action of the vortex force and the inclined plate surface pushes the dust to the leeward side. The dust-reducing layer 311 reduces the adhesion of the dust, making it easier for the dust to be thrown away from the main channel 303 from the gap 304. The falling dust first falls into the dust accumulation trough 306, and under the guidance of the guide ridge 309, it gathers towards the middle and is finally discharged downward through the through guide opening 308.

[0029] Preferably, the notch 304 is located on the leeward side and extends to the bottom edge of the guide vane, communicating with the ash collection trough 306.

[0030] The collection structure 4 is detachably installed at the bottom of the housing 1, directly below the flow guide opening 308. The main body of the collection structure 4 is the collection tank 401, which has a flow guide surface 402 that slopes from the edge to the center inside. The dust collection box 403 is slidably installed in the collection tank 401 via slide rails 406 on both sides. The dust collection box 403 has an open top, a filter screen 405 on the side wall, and a drain port 404 at the bottom. The slide rails 406 have slots 408, and the dust collection box 403 has a limiting block 407 that cooperates with them.

[0031] Dust falling from the guide opening 308 lands on the guide surface 402, slides down the slope to the lowest point in the center, and falls into the dust collection box 403 below through the opening there for temporary storage. When it is necessary to empty the dust collection box 403, the drain port 404 at its bottom can be opened, or the dust collection box 403 can be removed and emptied entirely.

[0032] When the dust collection box 403 needs to be removed for cleaning, pull the dust collection box 403 outwards. The limiting block 407 moves along the slide rail 406 and disengages from the slot 408, allowing the dust collection box 403 to be completely pulled out. The filter screen 405 prevents dust from flying during the pulling process. After cleaning, push the dust collection box 403 back, and the limiting block 407 slides into the slot 408 for accurate positioning. At this time, the opening of the dust collection box 403 is realigned with the dust collection port at the bottom of the guide surface 402.

[0033] The maintenance door 5 is rotatably mounted on the side wall of the housing 1 via a hinge 503; an observation window 501 and a handle 502 are installed on the panel of the maintenance door 5; a door status sensor 504 is installed on the inner edge of the maintenance door 5; when maintenance is required, the operator holds the handle 502 and applies force, and the maintenance door 5 rotates and opens around the axis of the hinge 503; the door status sensor 504 detects the position of the maintenance door 5 relative to the housing 1 in real time, and outputs a closing signal when the maintenance door 5 is closed in place.

[0034] The locking mechanism 6 is mounted on the frame 201. The locking mechanism 6 mainly consists of a linearly movable locking tongue 601 and an operating component 602 for manual operation. The operating component 602 is connected to the locking tongue 601 through an internal transmission mechanism. When the heat exchange module 2 is pushed into the housing 1 to the working position, the operator moves the operating component 602. The operating component 602 drives the locking tongue 601 to extend horizontally through the transmission mechanism. The end of the locking tongue 601 is inserted into a pre-set locking hole on the inner wall of the housing 1, thereby fixing the relative position of the frame 201 and the housing 1 and preventing them from shifting due to vibration or airflow impact during operation. When it is necessary to move the heat exchange module 2, the operating component 602 is operated in the opposite direction to drive the locking tongue 601 to retract and release the lock.

[0035] Example 2

[0036] Based on Embodiment 1, the solution in Embodiment 1 will be further described in detail below with reference to the specific working method, such as... Figures 1 to 9 As shown below, see details: Furthermore, the notch 304 is located on the leeward edge of the first guide vane 301 and the second guide vane 302 to facilitate the removal of accumulated dust under the action of airflow. The guide arc surface 305 smoothly bends from the windward edge of the first guide vane 301 and the second guide vane 302 toward the interior of the main channel 303 to guide the airflow in. The dust collection trough 306 is formed by the bottom edge of the first guide vane 301 and the second guide vane 302 cooperating with the tube wall of the heat exchange tube bundle 202 to collect dust that falls off from the surface of the guide vane. The turbulence protrusions 307 are uniformly arranged on the surface of the first guide vane 301 and the second guide vane 302 to disrupt the airflow boundary layer. When the airflow passes through the guide arc surface 305, it flows toward the area of ​​the turbulence protrusions 307. The turbulence protrusions 307 cause the airflow to generate vortices, pushing the dust along the surface of the guide vane toward the notch 304. After the dust falls off through the notch 304, it falls into the dust collection trough 306.

[0037] Furthermore, the bottom of the ash collection trough 306 is provided with a guide opening 308, which extends along the length of the ash collection trough 306 to discharge dust. The width of the guide opening 308 is smaller than the width of the ash collection trough 306 to limit the falling dust. A guide ridge 309 is provided inside the ash collection trough 306, which extends along the length of the ash collection trough 306 and is located on both sides of the guide opening 308. The guide opening 308 is set throughout the entire length of the ash collection trough 306 to ensure that dust can fall at any position along the length direction. When dust falls into the ash collection trough 306, it gathers in the area between the guide ridges 309. Under the action of gravity, the dust is guided along the slope of the guide ridge 309 and concentrated above the guide opening 308, and finally discharged downward through the guide opening 308.

[0038] Furthermore, the notch 304 divides the first guide vane 301 and the second guide vane 302 into multiple independent guide sections 310. Each guide section 310 has a reinforcing flange at its end to enhance structural strength. The notches 304 on adjacent first and second guide vanes 301 and 302 are staggered in the extension direction of the main channel 303 to form a non-linear airflow path. A dust-repellent layer 311 is provided on the leeward side surface of the first and second guide vanes 301 and 302 to reduce dust adhesion. When the airflow passes through the staggered notch 304 area, its direction changes and a vortex is generated. The dust-repellent layer 311 is selected from Teflon or a nano-coating. The vortex acts on the surface of the guide section 310, causing dust to peel off from the dust-repellent layer 311. The peeled dust is discharged to both sides of the main channel 303 through the staggered notches 304. In addition, the reinforcing flange at the end of the guide section 310 enhances structural rigidity and helps maintain morphological stability under airflow disturbances.

[0039] Furthermore, the frame 201 is provided with guide wheels 203, and the inner wall of the housing 1 is provided with guide rails 103 that cooperate with the guide wheels 203. The frame 201 is provided with an inflatable and deflated sealing bladder 204 in the circumferential direction. When the heat exchange module 2 needs to be cleaned or maintained, the sealing bladder 204 deflates and contracts, causing it to disengage from the inner wall of the housing 1. At this time, the guide wheels 203 cooperate with the guide rails 103, allowing the frame 201 to be pulled out of the housing 1 along the direction of the guide rails 103. When the heat exchange module 2 is in the working position, the sealing bladder 204 inflates and expands, pressing tightly against the inner wall of the housing 1 to form a seal to prevent air leakage. At the same time, the cooperation between the guide wheels 203 and the guide rails 103 positions and restricts the final position of the frame 201 within the housing 1.

[0040] Furthermore, the frame 201 is provided with an inflation / deflation valve 205, which is connected to the sealing bladder 204 through a pipeline to control its inflation / deflation state. The frame 201 is provided with a mounting groove 206 corresponding to the position of the sealing bladder 204. The mounting groove 206 is used to accommodate and fix the root of the sealing bladder 204. The outer surface of the sealing bladder 204 is provided with a wear-resistant layer 207 to reduce friction. When the sealing bladder 204 is inflated through the inflation / deflation valve 205, the sealing bladder 204 expands out from the mounting groove 206. The wear-resistant layer 207 on its outer surface contacts the inner wall of the housing 1 and generates a tight sealing pressure as the sealing bladder 204 continues to expand. During the process of pulling out or pushing in the frame 201, the wear-resistant layer 207 protects the body of the sealing bladder 204 from scratches and wear from the guide rail 103 or the inner wall of the housing 1. After the inflation / deflation valve 205 is operated to deflate, the sealing bladder 204 contracts and retracts into the area of ​​the mounting groove 206.

[0041] Furthermore, the collection structure 4 includes a dust collection box 403, which is removably installed in the collection trough 401. The bottom of the dust collection box 403 is provided with a drain port 404, and the side wall of the dust collection box 403 is provided with a filter screen 405. The lowest point of the bottom of the guide surface 402 is provided with a dust collection port, which is vertically aligned with the dust inlet (or open area) at the top of the dust collection box 403. Dust falling from the guide opening 308 slides down the guide surface 402 and collects, and finally enters the dust collection box 403 through the drain port 404 through the opening at the bottom of the guide surface 402. When the dust collection box 403 is pulled out for cleaning, the filter screen 405 allows air to pass through but prevents dust from escaping. When the dust collection box 403 is pushed into the collection trough 401 to the working position, its dust inlet automatically aligns and connects with the dust collection port at the bottom of the guide surface 402.

[0042] Furthermore, a slide rail 406 is provided on the side wall of the collection tank 401, and the dust collection box 403 is slidably disposed in the collection tank 401 via the slide rail 406. A limit block 407 is provided on the dust collection box 403 to limit its sliding range, and a slot 408 is provided on the slide rail 406. When the dust collection box 403 slides along the slide rail 406 into the collection tank 401, the limit block 407 moves with the dust collection box 403. When the dust collection box 403 reaches the preset working position... During the placement process, the limiting block 407 contacts and slides against the surface of the slide rail 406 until the limiting block 407 is aligned and embedded in the slot 408. At this time, the drain port 404 of the dust collection box 403 is accurately aligned and connected with the bottom of the guide surface 402. When it is necessary to clean the dust collection box 403, an external force is applied to make the dust collection box 403 slide outward, the limiting block 407 is dislodged from the slot 408, and continues to guide the dust collection box 403 to slide completely out of the collection tank 401 along the slide rail 406.

[0043] Furthermore, the housing 1 is provided with an inspection door 5, which is equipped with an observation window 501 and a handle 502. The inspection door 5 is rotatably connected to the housing 1 via a hinge 503. The inspection door 5 is also equipped with a door status sensor 504. The operator can observe the internal condition of the housing 1 through the observation window 501. When it is necessary to open the inspection door 5, the operator holds the handle 502 and applies force, and the inspection door 5 rotates and opens around the axis of the hinge 503. During this process, the door status sensor 504 detects the position status of the inspection door 5 in real time and outputs a signal. When the inspection door 5 is closed to fit against the housing 1, the door status sensor 504 detects the closed state.

[0044] Furthermore, a locking mechanism 6 is provided on the frame 201. The locking mechanism 6 includes a locking tongue 601 movably disposed on the frame 201 and an operating member 602 for driving the locking tongue 601. The operating member 602 is convexly connected to the locking tongue 601. When the operator operates the operating member 602, the operating member 602 drives the locking tongue 601 to extend or retract. The end of the locking tongue 601 extends or retracts into the side wall of the frame 201. When the locking tongue 601 extends, its end is inserted into the corresponding locking hole in the inner wall of the housing 1, locking the frame 201 in the current position and preventing the heat exchange module 2 from moving when it is working or when the sealing bladder 204 is inflated. When the operating member 602 is operated in the opposite direction, the locking tongue 601 retracts, releasing the locking of the frame 201 and allowing the guide wheel 203 to slide along the guide rail 103 to pull out the frame 201.

[0045] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Secondly, the accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other. Finally, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A heat exchanger for a drying device that is easy to clean, comprising a shell (1) and a humid air inlet (101) and a dry air outlet (102) disposed on the shell (1), characterized in that, Also includes: A heat exchange module (2) is movably disposed within the housing (1). The heat exchange module (2) includes a frame (201) and a heat exchange tube bundle (202) disposed within the frame (201). A flow guiding structure (3) is provided on the heat exchange tube bundle (202). The flow guiding structure (3) includes a plurality of first flow guiding vanes (301) and second flow guiding vanes (302) that are alternately inclined along the airflow direction. The space between the first flow guiding vanes (301) and the second flow guiding vanes (302) forms a main channel (303). The first flow guiding vanes (301) and the second flow guiding vanes (302) are provided with notches (304) for ash to fall off. The collection structure (4) is detachably disposed at the bottom of the housing (1). The collection structure (4) includes a collection groove (401) located directly below the flow guiding structure (3) and a flow guiding surface (402) disposed in the collection groove (401). The flow guiding surface (402) is inclined toward the interior of the collection groove (401).

2. The heat exchanger for a drying device that is easy to clean according to claim 1, characterized in that: The notch (304) is located on the leeward side of the first guide vane (301) and the second guide vane (302); Both the first guide vane (301) and the second guide vane (302) have a guide arc surface (305) on their windward side edges. The bottom edges of the first guide vane (301) and the second guide vane (302) form an ash accumulation groove (306) between the tube wall of the heat exchange tube bundle (202). Both the first guide vane (301) and the second guide vane (302) are provided with turbulence protrusions (307).

3. The heat exchanger for a drying device that is easy to clean according to claim 2, characterized in that: The bottom of the ash collection trough (306) is provided with a flow guide opening (308). The ash collection trough (306) is provided with a guide ridge (309), which extends along the length of the ash collection trough (306) and is used to guide the dirt from the first guide plate (301) and the second guide plate (302) to the guide opening (308).

4. The heat exchanger for a drying device that is easy to clean according to claim 2, characterized in that: The notch (304) separates the first guide vane (301) and the second guide vane (302) into multiple independent guide segments (310). The notches (304) on the adjacent first guide vane (301) and second guide vane (302) are staggered in the extension direction of the main channel (303); The leeward side surfaces of the first guide vane (301) and the second guide vane (302) are provided with a dust-reducing layer (311).

5. A heat exchanger for a drying device that is easy to clean according to claim 1, characterized in that: The frame (201) is provided with guide wheels (203); The inner wall of the housing (1) is provided with a guide rail (103) that cooperates with the guide wheel (203). The frame (201) is circumferentially provided with an inflatable and deflated sealing bladder (204).

6. A heat exchanger for a drying device that is easy to clean according to claim 5, characterized in that: The frame (201) is also provided with an inflation / deflation valve (205) communicating with the sealing bladder (204). The frame (201) is provided with a mounting groove (206) corresponding to the position of the sealing bag (204); The outer surface of the sealing bladder (204) is provided with a wear-resistant layer (207).

7. A heat exchanger for a drying device that is easy to clean according to claim 1, characterized in that: The collection structure (4) also includes a dust collection box (403) that can be pulled out and disposed in the collection groove (401), and a drain outlet (404) is provided at the bottom of the dust collection box (403). The dust collection box (403) is provided with a filter screen (405) on its side wall. The bottom of the guide surface (402) is connected to the drain outlet (404).

8. A heat exchanger for a drying device that is easy to clean according to claim 7, characterized in that: A slide rail (406) is provided on the side wall of the collection tank (401), and the dust collection box (403) is slidably disposed on the slide rail (406). The dust collection box (403) is provided with a limiting block (407) for limiting the sliding position of the dust collection box (403). The slide rail (406) has a slot (408). When the dust collection box (403) slides to a preset position, the limiting block (407) is embedded in the slot (408).

9. A heat exchanger for a drying device that is easy to clean according to claim 1, characterized in that: The housing (1) is provided with an inspection door (5); The inspection door (5) is equipped with an observation window (501) and a handle (502); The inspection door (5) is rotatably connected to the housing (1) via a hinge (503); The inspection door (5) is also equipped with a door status sensor (504).

10. A heat exchanger for a drying device that is easy to clean according to claim 1, characterized in that: A locking mechanism (6) is provided on the frame (201); The locking mechanism (6) includes a latch (601) movably disposed on the frame (201) and an operating member (602) for driving the latch (601) to extend or retract.

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