Heating and ventilating device for dryer

Abstract

The utility model relates to the technical field of ventilation, and discloses a heating ventilation device for a dryer, which comprises a fixing frame, a fan is fixedly mounted on the inner wall of the fixing frame, fixing columns are fixedly connected to the four corners of the bottom wall of the fixing frame, choke plates are fixedly connected between the adjacent fixing columns, and the choke plates are fixedly connected to the bottom wall of the fixing frame. The bottom ends of the multiple fixing columns are fixedly connected with an air guide plate through multiple fixing assemblies, multiple direct flow round holes are formed in the middle of the bottom wall of the air guide plate, multiple oblique flow square holes are formed in the periphery of the top wall of the air guide plate, and multiple air guide limiting plates are fixedly connected to the periphery of the bottom wall of the air guide plate. According to the drying device, the choke plates are arranged among the fixing columns to guide air flow to the air guide plates, the oblique flow square holes and the direct flow round holes to enable air to be collected, the air guide limiting plates guide the air flow, large-air-volume drying can be achieved through the large fan blades at the same rotating speed, and the drying efficiency and quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation, in particular to a heating and ventilation device for a drying machine. Background Art

[0002] The heating and ventilation device for dryers is a device used in dryers. Oblique flow square holes and direct flow circular holes are opened on the air guide plate to make the flowing wind converge toward the middle, so that large fan blades can obtain a large air volume at the same speed for drying, thereby improving drying efficiency and quality.

[0003] After searching, the Chinese patent announcement number is: CN218951787U, a heating dryer, including a drying barrel assembly, an air duct assembly and an air outlet pad; the air duct assembly includes a heating device, a fan and an arc-shaped air guide cover; the heating device and the fan are fixed on the outside of the bottom plate portion of the drying barrel body, and the arc-shaped air guide cover is fixed on the inside of the bottom plate portion of the drying barrel body, and the fan, the heating device, the openings at the bottom plate portion and the arc-shaped air guide cover are arranged and aligned in sequence from bottom to top; an air outlet grille is provided on the air outlet pad, which is fixed in the drying barrel body and covers the arc-shaped air guide cover of the air duct assembly. The air guide cover provides a reasonable, efficient and low-cost air duct structure for the heating dryer, so that fabrics such as towels or clothes in the drying barrel body can be easily heated and dried, and the heating dryer can be easily assembled. Through the air duct structure, the heat transfer efficiency between the heating device of the heating dryer and the fabric is improved. However, there is a lack of effective guidance and centralized design for the air outlet. Since the fan in the dryer is small and the air outlet is scattered, the hot air cannot accurately act on the object to be dried in the drying barrel body, which reduces the heat utilization efficiency. It cannot meet the needs of situations where quick drying is required. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a heating and ventilation device for a dryer, which aims to improve the existing heating dryer. Due to the small internal fan and scattered air output, the hot air cannot accurately act on the objects to be dried in the drying barrel body, which reduces the heat utilization efficiency and cannot meet the needs of situations where quick drying is required.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a heating and ventilation device for a dryer comprises a fixed frame, the inner wall of the fixed frame is fixedly installed with a fan, the four corners of the bottom wall of the fixed frame are fixedly connected to fixed columns, the adjacent ones of the fixed columns are fixedly connected with wind resistance plates, the bottom ends of the multiple fixed columns are fixedly connected to the wind guide plates through multiple fixing components, the middle of the bottom wall of the wind guide plates are provided with multiple direct current circular holes, the top wall of the wind guide plates are provided with multiple oblique flow square holes, the bottom wall of the wind guide plates are fixedly connected with multiple wind guide limiting plates, the multiple wind guide limiting plates are all provided with an inclination angle, the bottom ends of the adjacent sides of the multiple fixed columns are provided with mounting slots, the inner walls of the multiple mounting slots are slidably connected with filter frames, the inner wall of the filter frame is provided with filter elements, and quick replacement mechanisms are provided on the left and right sides of the filter frame.

[0006] Through the above technical solution: by setting wind blocking plates between multiple fixed columns to guide the airflow to the air guide plates, the oblique flow square holes and direct current circular holes make the wind converge, and the air guide limit plates guide the airflow, it is possible to use large fan blades at the same speed to obtain large air volume for drying, thereby improving drying efficiency and quality. At the same time, filtering through the filter element also ensures the air quality during the drying process, avoiding pollution to the items.

[0007] As a further description of the above technical solution:

[0008] The quick-change mechanism includes a plurality of spring slots, and the plurality of spring slots are respectively opened at the four corners on the left and right sides of the filter frame. The inner walls of the plurality of spring slots are fixedly connected to the limiting ring at one end away from the inner walls, and the adjacent ends of the inner walls of the plurality of spring slots are fixedly connected to the tension springs. The ends away from the tension springs are fixedly connected to the limiting discs, and the limiting discs are respectively slidably connected to the inner walls of the plurality of spring slots. The ends away from the limiting discs are fixedly connected to the fixing heads, and the sides away from the plurality of mounting slots are each provided with two fixing holes, and the fixing heads are respectively engaged with the plurality of fixing holes.

[0009] Through the above technical solution: by arranging tension springs on both sides of the filter frame, making them cooperate with the limit disc and the fixed head, and engage with the fixed hole of the installation slide to fix the filter frame, when replacing the filter element, the filter frame can be pulled to disengage the fixed head from the fixed hole, thereby realizing rapid replacement of the filter frame, improving operational convenience and maintenance efficiency, and ensuring the continuous and efficient operation of the drying device.

[0010] As a further description of the above technical solution:

[0011] The plurality of fixing components include barbed fasteners, which are respectively fixedly installed at the middle of the bottom ends of the plurality of fixing columns. The inner walls of the plurality of barbed fasteners are threadedly connected with fixing screws, and the plurality of fixing screws pass through the four corners of the bottom wall of the air guide plate.

[0012] Through the above technical solution: the barbed fastener in the fixing assembly is fixedly installed in the middle of the bottom end of the fixing column, and is threadedly connected with the fixing screw to fix the air deflector to the bottom end of the fixing column, ensuring that the air deflector remains stable during operation.

[0013] As a further description of the above technical solution:

[0014] The left and right sides of the bottom wall of the filter frame are fixedly connected with handles, and the outer walls of the two handles are frosted.

[0015] Through the above technical solution: the handle is convenient for the operator to pull the filter frame out of the installation slide groove by holding the handle when the filter element needs to be replaced. The frosted process on the outer wall increases the friction and makes the grip more stable.

[0016] As a further description of the above technical solution:

[0017] The bottom end of the left middle part of the wind deflector on the left end is fixedly connected with a connecting block, the left side of the connecting block is fixedly connected with two hinges, and the bottom ends of the two hinges are fixedly connected to the left middle part of the wind deflector.

[0018] Through the above technical solution: the connecting block connects the left end wind block plate and the hinge, and the hinge is connected to the wind guide plate, so that the wind guide plate can be rotated at a certain angle relative to the wind block plate, which provides flexibility when installing and adjusting the device, and also facilitates maintenance and inspection of the wind guide plate.

[0019] As a further description of the above technical solution:

[0020] A control panel is fixedly connected to the left end of the bottom wall of the air guide plate, close to the rear end thereof; and a plurality of control buttons are fixedly connected to the bottom wall of the control panel.

[0021] Through the above technical solution: the control panel is fixed on the left end of the bottom wall of the air guide plate near the rear end, and the control button is used to start and stop the fan, adjust the fan speed, and control the heating temperature, which makes it convenient for users to adjust the working status of the device according to actual needs.

[0022] As a further description of the above technical solution:

[0023] A tachometer is fixedly connected to the left end of the bottom wall of the air guide plate near the front end, and the tachometer is electrically connected to the fan.

[0024] Through the above technical solution: the tachometer is electrically connected to the fan, which can display the fan speed in real time, allowing users to intuitively understand the working status of the fan so that they can make adjustments when necessary to ensure the best drying effect.

[0025] As a further description of the above technical solution:

[0026] The front and rear sides of the outer walls of the plurality of barb fasteners are fixedly connected with barbs, and the outer walls of the plurality of barb fasteners are all designed to be anti-slip.

[0027] Through the above technical solution: the barb enhances the stability of the connection between the barbed fastener and the fixing screw, preventing the fixing screw from loosening during operation, and the anti-slip design increases the friction between the barbed fastener and the fixing column.

[0028] The utility model has the following beneficial effects:

[0029] 1. In the utility model, wind blocking plates are arranged between multiple fixed columns to guide the airflow to the air guide plates, the oblique flow square holes and the direct flow circular holes gather the wind, and the air guide limit plates guide the airflow, so that large fan blades can be used at the same speed to obtain large air volume for drying, thereby improving the drying efficiency and quality. At the same time, the air quality during the drying process is guaranteed by filtering through the filter element, avoiding pollution to the articles.

[0030] 2. In the utility model, tension springs are arranged on both sides of the filter frame to cooperate with the limit disc and the fixed head, and engage with the fixed hole of the mounting chute to fix the filter frame. When replacing the filter element, the fixed head can be disengaged from the fixed hole by pulling the filter frame, thereby realizing rapid replacement of the filter frame, improving operational convenience and maintenance efficiency, and ensuring continuous and efficient operation of the drying device. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a three-dimensional diagram of the heating and ventilation device for the dryer proposed in the utility model;

[0032] Figure 2 This is a bottom view of the heating and ventilation device for a dryer proposed by the present invention;

[0033] Figure 3 This is a structural exploded diagram of the heating and ventilation device for the dryer proposed in the utility model;

[0034] Figure 4 This is a structural diagram of the quick-changing mechanism of the heating and ventilation device for the dryer proposed in the utility model;

[0035] Figure 5 This is a structural exploded view of the barbed fastener for the heating and ventilation device of the dryer proposed in the utility model;

[0036] Figure 6This is a structural schematic diagram of the handle of the heating and ventilation device for a dryer proposed by the utility model.

[0037] Legend:

[0038] 1. Fixing bracket; 2. Quick-change mechanism; 201. Spring slot; 202. Limiting ring; 203. Tension spring; 204. Limiting disc; 205. Fixing head; 206. Fixing hole; 3. Fan; 4. Fixing column; 5. Air baffle; 6. Air guide plate; 7. Direct current round hole; 8. Oblique flow square hole; 9. Air guide limiting plate; 10. Mounting slide; 11. Filter frame; 12. Filter element; 13. Barb fastener; 14. Fixing screw; 15. Handle; 16. Connecting block; 17. Hinge; 18. Control panel; 19. Control button; 20. Tachometer; 21. Hook. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] Reference Figure 1 、 Figure 2 and Figure 3The utility model provides an embodiment of a heating and ventilation device for a dryer, comprising a fixing frame 1, a fan 3 is fixedly installed on the inner wall of the fixing frame 1, and the fan 3 can generate airflow for drying. The four corners of the bottom wall of the fixing frame 1 are fixedly connected with fixing columns 4, and the fixing columns 4 play a supporting and connecting role. A plurality of adjacent fixing columns 4 are fixedly connected with air blocking plates 5, and the air blocking plates 5 can block and guide the airflow. The bottom ends of the plurality of fixing columns 4 are fixedly connected with air guide plates 6 through a plurality of fixing components. The air guide plates 6 can guide the airflow. A plurality of direct current circular holes 7 are opened in the middle of the bottom wall of the air guide plate 6. The direct current circular holes 7 can make part of the airflow flow directly downward. A plurality of oblique flow square holes 8 are opened around the top wall of the air guide plate 6. The oblique flow square holes 8 can diffuse the airflow to the surroundings at a certain angle. A plurality of air guide limit plates 9 are fixedly connected to the bottom wall of the air guide plate 6. The plurality of air guide limit plates 9 are all provided with an inclination angle. The air guide limit plates 9 can further guide and limit the airflow. The bottom ends of the adjacent sides of the plurality of fixed columns 4 are provided with mounting slots 10. The mounting slots 10 are used to install the filter frames 11. The inner walls of the plurality of mounting slots 10 are slidably connected with filter frames 11. The filter frame 11 can be installed with a filter element 12 to filter the airflow. The inner wall of the filter frame 11 is provided with a filter element 12. The filter element 12 can remove impurities and dust in the airflow. The left and right sides of the filter frame 11 are provided with quick-change mechanisms 2. The quick-change mechanism 2 can easily replace the filter element 12.

[0041] Specifically, the fixing frame 1 provides a stable support structure for the entire device. The fan 3 installed on the inner wall of the fixing frame 1 generates airflow after being started. The airflow flows inside the fixing frame 1. The fixing columns 4 at the four corners of the bottom wall of the fixing frame 1 serve to connect and fix other components. The wind blocking plates 5 between adjacent fixing columns 4 can block and guide the airflow to a certain extent, so that the airflow flows more concentratedly to the wind guide plate 6 below. The multiple oblique flow square holes 8 opened around the top wall of the wind guide plate 6 can make the airflow diffuse to the surroundings at a certain angle. At the same time, the multiple direct current circular holes 7 opened in the middle of the bottom wall make part of the airflow flow directly downward, so that the passing wind can be gathered towards the middle. , so that when using large fan blades, a large air volume can be obtained for drying at the same speed. A plurality of wind guide limit plates 9 with an inclination fixedly connected around the bottom wall of the air guide plate 6 further guide and limit the airflow to ensure that the airflow can flow in a predetermined direction. A filter frame 11 is slidably connected in the installation slot 10 opened at the bottom end of one side adjacent to the fixed column 4. The filter element 12 on the inner wall of the filter frame 11 can filter the airflow passing through and remove impurities and dust therein, thereby ensuring the air quality during the drying process and avoiding pollution to the dried items. The effect of obtaining a large air volume for drying at the same speed using large fan blades is achieved, thereby improving the drying efficiency and quality.

[0042] Reference Figure 3 and Figure 4The quick-change mechanism 2 includes a plurality of spring slots 201, which are respectively opened at the four corners on the left and right sides of the filter frame 11. The spring slots 201 provide installation space for internal components. The inner walls of the plurality of spring slots 201 are fixedly connected to the limiting ring 202 at one end away from each other. The limiting ring 202 limits the movement range of the limiting disc 204. The inner walls of the plurality of spring slots 201 are fixedly connected to the adjacent ends thereof with a tension spring 203. The tension spring 203 provides outward tension for the limiting disc 204. The plurality of tension springs 203 are fixedly connected to the adjacent ends thereof. The ends are fixedly connected to the limiting disc 204, the limiting disc 204 is slidably connected to the inner wall of the spring groove 201 and moves stably under the action of the tension spring 203, and the ends away from the multiple limiting discs 204 are fixedly connected to the fixed heads 205, and the fixed heads 205 are used to engage with the fixing holes 206 to fix the filter frame 11. The sides away from the multiple installation chutes 10 are each provided with two fixing holes 206, and the fixing holes 206 cooperate with the fixing heads 205 to fix the filter frame 11, and the multiple fixing heads 205 are respectively engaged with the multiple fixing holes 206.

[0043] Specifically, multiple spring grooves 201 are respectively opened at the four corners on the left and right sides of the filter frame 11, providing installation space for various internal components. The limiting ring 202 at one end of the inner wall of the spring groove 201 away from the limit ring plays a role in limiting the movement range of the limiting disc 204 to prevent it from escaping from the spring groove 201. The tension spring 203 fixedly connected to the adjacent end of the inner wall of the spring groove 201 is always in a compressed state, providing outward tension for the limiting disc 204. The limiting disc 204 is slidably connected to the inner wall of the spring groove 201 and can move stably under the action of the tension spring 203. The fixed head 205 fixedly connected to the end of the limiting disc 204 away from the limit ring 202 is pushed by the tension spring 203 and is connected to the installation slide groove 1 0. The two fixing holes 206 opened on the side away from each other engage with each other, so that the filter frame 11 is firmly fixed in the installation slide 10. When the filter element 12 needs to be replaced, the filter frame 11 only needs to be pulled outward with force. The fixing head 205 is squeezed by the inner wall of the fixing hole 206 and moves toward the inside of the spring groove 201, compressing the tension spring 203. When the fixing head 205 is completely out of the fixing hole 206, the filter frame 11 can be taken out from the installation slide 10 to replace the filter element 12. After the replacement is completed, the filter frame 11 is inserted into the installation slide 10. The fixing head 205 is engaged with the fixing hole 206 again under the action of the tension spring 203, completing the quick replacement operation, thereby improving the operational convenience and maintenance efficiency.

[0044] Reference Figure 1 、 Figure 5 and Figure 6, multiple fixing components include barb fasteners 13, multiple barb fasteners 13 are respectively fixedly installed at the middle part of the bottom end of multiple fixing columns 4, the barb fasteners 13 are used to connect the fixing columns 4 and the air guide plate 6, the inner walls of multiple barb fasteners 13 are threadedly connected with fixing screws 14, and multiple fixing screws 14 pass through the four corners of the bottom wall of the air guide plate 6, and the fixing screws 14 strengthen the fixed connection effect; the left and right sides of the bottom wall of the filter frame 11 are fixedly connected with handles 15, and the outer walls of the two handles 15 are frosted, so that the handles 15 are convenient for pulling the filter frame 11 to replace the filter element, and the frosted outer wall process increases friction; the bottom end of the left middle part of the left end air choke 5 is fixedly connected to a connecting block 16, which plays a connecting role, and the left side of the connecting block 16 is fixedly connected to two hinges 17, which enable the air guide plate 6 to rotate relative to the air choke plate 5, and the bottom ends of the two hinges 17 are fixedly connected to the left middle part of the air guide plate 6;

[0045] Specifically, the barbed fastener 13 in the fixing assembly is fixedly installed in the middle of the bottom end of the fixing column 4, and is threadedly connected with the fixing screw 14 to fix the air guide plate 6 to the bottom end of the fixing column 4, ensuring that the air guide plate 6 remains stable during operation. The handle 15 is convenient for the operator to pull the filter frame 11 out of the installation slide 10 by holding the handle 15 when the filter element 12 needs to be replaced. The outer wall adopts a frosting process to increase the friction and make the grip more stable. The connecting block 16 connects the left end air block 5 and the hinge 17, and the hinge 17 is connected to the air guide plate 6, so that the air guide plate 6 can be rotated at a certain angle relative to the air block 5, which provides flexibility when installing and adjusting the device, and also facilitates the maintenance and inspection of the air guide plate 6.

[0046] Reference Figure 2 and Figure 5 , a control panel 18 is fixedly connected to the rear end side of the left end of the bottom wall of the air deflector 6, and the control panel 18 is used to control the operating parameters of the device. A plurality of control buttons 19 are fixedly connected to the bottom wall of the control panel 18, and the control buttons 19 facilitate operation of the control device. A tachometer 20 is fixedly connected to the front end side of the left end of the bottom wall of the air deflector 6, and the tachometer 20 can display the speed of the fan 3 in real time. The tachometer 20 is electrically connected to the fan 3. The front and rear sides of the outer walls of the multiple barbed fasteners 13 are fixedly connected with barbs 21, and the barbs 21 enhance the stability of the connection between the barbed fasteners 13 and the fixing screws 14. The outer walls of the multiple barbed fasteners 13 all adopt an anti-slip design, and the anti-slip design facilitates the installation and removal of the fixing screws 14.

[0047] Specifically, the control panel 18 is fixed to the left end of the bottom wall of the air guide plate 6 near the rear end. The control button 19 is used to start and stop the fan 3, adjust the speed of the fan 3, and control the heating temperature, so that the user can adjust the working state of the device according to actual needs. The tachometer 20 is electrically connected to the fan 3 and can display the speed of the fan 3 in real time, allowing the user to intuitively understand the working state of the fan 3 so that adjustments can be made when necessary to ensure the best drying effect. The barb 21 enhances the stability of the connection between the barb fastener 13 and the fixing screw 14 to prevent the fixing screw 14 from loosening during operation. The anti-slip design increases the friction between the barb fastener 13 and the fixing column 4.

[0048] Working principle: the fixing frame 1 provides a stable support structure for the entire device. The fan 3 installed on the inner wall of the fixing frame 1 generates airflow when it is started. The airflow flows in the fixing frame 1. The fixing columns 4 at the four corners of the bottom wall of the fixing frame 1 serve to connect and fix other components. The wind resistance plates 5 between adjacent fixing columns 4 can block and guide the airflow to a certain extent, so that the airflow flows more concentratedly to the wind guide plate 6 below. The multiple oblique flow square holes 8 opened around the top wall of the wind guide plate 6 can make the airflow diffuse to the surroundings at a certain angle. At the same time, the multiple direct flow circular holes 7 opened in the middle of the bottom wall allow part of the airflow to flow directly downward, so that the passing wind can be gathered towards the middle. Therefore, when using large fan blades, a large air volume can be obtained for drying at the same speed. The multiple angled air guide limit plates 9 fixedly connected around the bottom wall of the wind guide plate 6 further guide and limit the airflow to ensure that the airflow can flow in the predetermined direction. The filter frame 11 is slidably connected in the installation slot 10 opened at the bottom end of the adjacent side of the fixing column 4. The filter element 12 on the inner wall of the filter frame 11 can filter the passing airflow.

[0049] In addition, multiple spring grooves 201 are respectively opened at the four corners on the left and right sides of the filter frame 11, providing installation space for various internal components. The limiting ring 202 on the inner wall of the spring groove 201 away from one end plays a role in limiting the movement range of the limiting disc 204 to prevent it from escaping from the spring groove 201. The tension spring 203 fixedly connected to the adjacent end of the inner wall of the spring groove 201 is always in a compressed state, providing outward tension for the limiting disc 204. The limiting disc 204 is slidably connected to the inner wall of the spring groove 201 and can move stably under the action of the tension spring 203. The fixed head 205 fixedly connected to the end of the limiting disc 204 away from the tension spring 203 is in a compressed state. Under the push of , the two fixing holes 206 opened on the side away from the installation slide 10 engage with each other, thereby firmly fixing the filter frame 11 in the installation slide 10. When the filter element 12 needs to be replaced, it is only necessary to pull the filter frame 11 outward with force, and the fixing head 205 is squeezed by the inner wall of the fixing hole 206 and moves toward the inside of the spring groove 201, compressing the tension spring 203. When the fixing head 205 is completely out of the fixing hole 206, the filter frame 11 can be taken out from the installation slide 10 and the filter element 12 can be replaced. After the replacement is completed, the filter frame 11 is inserted into the installation slide 10, and the fixing head 205 is engaged with the fixing hole 206 again under the action of the tension spring 203.

[0050] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A heating and ventilation device for a dryer, comprising a fixing frame (1), characterized in that: A fan (3) is fixedly mounted on the inner wall of the fixing frame (1), and fixing columns (4) are fixedly connected at four corners of the bottom wall of the fixing frame (1), and wind blocking plates (5) are fixedly connected between adjacent fixing columns (4). The bottom ends of the fixing columns (4) are fixedly connected to wind guide plates (6) through multiple fixing components, and a plurality of direct current circular holes (7) are provided in the middle of the bottom wall of the wind guide plate (6), and a plurality of oblique flow square holes (8) are provided around the top wall of the wind guide plate (6). A plurality of wind guide limit plates (9) are fixedly connected around the bottom wall of the wind guide plate (6), and the plurality of wind guide limit plates (9) are all provided with an inclination angle, and a mounting slot (10) is provided at the bottom end of an adjacent side of the fixing columns (4), and the inner walls of the plurality of mounting slots (10) are slidably connected to filter frames (11), and the inner wall of the filter frame (11) is provided with a filter element (12), and the left and right sides of the filter frame (11) are both provided with a quick replacement mechanism (2).

2. The heating and ventilation device for a dryer according to claim 1, characterized in that: The quick-change mechanism (2) comprises a plurality of spring slots (201), wherein the plurality of spring slots (201) are respectively provided at four corners on the left and right sides of the filter frame (11), the inner walls of the plurality of spring slots (201) are fixedly connected to a limiting ring (202) at their ends away from each other, the inner walls of the plurality of spring slots (201) are fixedly connected to an adjacent end thereof with a tension spring (203), the inner walls of the plurality of tension springs (203) are fixedly connected to a limiting disc (204), the limiting discs (204) are respectively slidably connected to the inner walls of the plurality of spring slots (201), the inner walls of the plurality of limiting discs (204) are fixedly connected to a fixing head (205) at their ends away from each other, the inner walls of the plurality of mounting slides (10) are each provided with two fixing holes (206), and the fixing heads (205) are respectively engaged with the plurality of fixing holes (206).

3. The heating and ventilation device for a dryer according to claim 1, characterized in that: The plurality of fixing assemblies all include barbed fasteners (13), and the plurality of barbed fasteners (13) are respectively fixedly mounted on the middle portion of the bottom end of the plurality of fixing columns (4). The inner walls of the plurality of barbed fasteners (13) are all threadedly connected with fixing screws (14), and the plurality of fixing screws (14) are all passed through the four corners of the bottom wall of the air guide plate (6).

4. The heating and ventilation device for a dryer according to claim 1, characterized in that: Handles (15) are fixedly connected to the left and right sides of the bottom wall of the filter frame (11), and the outer walls of the two handles (15) are both made of a frosted process.

5. The heating and ventilation device for a dryer according to claim 1, characterized in that: A connecting block (16) is fixedly connected to the bottom end of the left middle portion of the wind deflector (5) at the left end, and two hinges (17) are fixedly connected to the left side of the connecting block (16), and the bottom ends of the two hinges (17) are fixedly connected to the middle portion of the left side of the wind deflector (6).

6. The heating and ventilation device for a dryer according to claim 1, characterized in that: A control panel (18) is fixedly connected to the left end of the bottom wall of the air guide plate (6) near the rear end, and a plurality of control buttons (19) are fixedly connected to the bottom wall of the control panel (18).

7. The heating and ventilation device for a dryer according to claim 1, characterized in that: A tachometer (20) is fixedly connected to the left end of the bottom wall of the air guide plate (6) near the front end, and the tachometer (20) is electrically connected to the fan (3).

8. The heating and ventilation device for a dryer according to claim 3, characterized in that: The front and rear sides of the outer walls of the plurality of barbed fasteners (13) are fixedly connected with barbs (21), and the outer walls of the plurality of barbed fasteners (13) are all designed to be non-slip.

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