An air handling module and a fresh air device
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-05-10
- Publication Date
- 2026-08-14
AI Technical Summary
[0004]但新风进入室内时,通常不会对新风进行处理,从而导致排入到室内的新风会对人体的健康造成一定影响
[0028]一、本发明实施例中的空气处理模块当安装在新风装置上时,可对进入到室内的新风进行处理,使得排入到室内的新风更加适合于人体,继而提高了人体的舒适感。
Smart Images

Figure CN117704497B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of fresh air handling technology, and more particularly to an air handling module and a fresh air device. Background Technology
[0002] A fresh air system can bring fresh outdoor air into the room and at the same time filter and exhaust stale indoor air to the outside, thus completing the replacement of indoor air with fresh air.
[0003] After the outdoor fresh air and the indoor stale air exchange heat through the heat exchanger, the temperature of the fresh air entering the room can be closer to the indoor temperature.
[0004] However, when fresh air enters a room, it is usually not treated, which can lead to the fresh air entering the room having a certain impact on human health. Summary of the Invention
[0005] To overcome the problems existing in related technologies, this invention proposes an air handling module and a fresh air device.
[0006] The first aspect of this invention provides an air handling module for use in a fresh air system, comprising:
[0007] The shell has an inner wall that forms a cavity, which serves as a duct for air circulation.
[0008] A liquid supply chamber, formed in the inner wall of the housing or on the outside of the housing, is used to supply air handling liquid into the air duct;
[0009] The liquid distribution hole extends radially along the shell, with one end opening into the inner wall of the shell and communicating with the air duct, and the other end communicating with the liquid supply chamber.
[0010] In the above technical solution, the liquid supply chamber is provided with multiple liquid distribution holes, and the constricted end of the liquid distribution hole is connected to the air duct.
[0011] In the above technical solution, the air handling module is equipped with a liquid-absorbing core made of capillary material, with one end of the liquid-absorbing core extending into the air duct and the other end immersed in the liquid supply chamber.
[0012] In the above technical solution, there are multiple liquid supply chambers, which are evenly distributed along the circumference of the shell.
[0013] Each liquid supply chamber is equipped with multiple liquid distribution holes.
[0014] A connecting channel is provided between each pair of adjacent liquid supply chambers, and the connecting channel is used to connect the two adjacent liquid supply chambers.
[0015] One of the multiple liquid supply chambers has a water injection hole, which is connected to a liquid injection mechanism.
[0016] In the above technical solution, the housing is provided with at least one connection end, which allows the air handling module to be detachably installed on the air inlet or the air outlet.
[0017] In the above technical solution, the housing is provided with two connection ends, one of which is used to connect to the inlet of the air inlet duct and the other is used to connect to the outlet of the air outlet duct.
[0018] In the above technical solution, the air handling module also includes a liquid collection pipe, one end of which extends out of the housing and the other end extends into the inner wall of the housing. It extends into the air duct through the liquid supply chamber and liquid distribution hole located at the bottom of the housing or opens into the inner bottom wall of the housing and is flush with the inner bottom wall of the housing.
[0019] The liquid collection tube is a flexible tube.
[0020] In the above technical solution, the liquid collecting tube includes an outer tube and an inner tube that are nested together, and the inner tube can rotate relative to the outer tube;
[0021] The outer tube surface has a first drain port that communicates with the liquid supply chamber, and the inner tube surface has a second drain port that matches the first drain port.
[0022] When the second drain port on the inner tube is rotated to the position area that coincides with the first drain port, the water in the supply chamber can flow into the inner tube through the first drain port and the second drain port and then be discharged.
[0023] In the above technical solution, the bottom of the air handling module is detachably connected to a liquid collection shell, and the liquid collection pipe is connected to the inside of the liquid collection shell; wherein the liquid collection shell is a transparent shell.
[0024] A second aspect of the present invention provides a fresh air device, including a body and the aforementioned air handling module;
[0025] The unit is equipped with a fresh air inlet, and the air handling module is located on the fresh air inlet. One end of the module is connected to the fresh air inlet, and the other end is connected to the fresh air inlet pipe that introduces fresh air from the outside into the room.
[0026] In the above technical solution, the fresh air device is a fresh air air conditioner.
[0027] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:
[0028] 1. When the air handling module in this embodiment of the invention is installed on a fresh air device, it can process the fresh air entering the room, making the fresh air discharged into the room more suitable for the human body, thereby improving the human body's comfort. Attached Figure Description
[0029] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.
[0030] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the air treatment module of the present invention;
[0031] Figure 2 This is a schematic diagram of the main structure of an embodiment of the air treatment module of the present invention;
[0032] Figure 3 This is a side view of an embodiment of the air treatment module of the present invention;
[0033] Figure 4 for Figure 2 Schematic diagram of the cross-sectional structure of the middle AA surface;
[0034] Figure 5 for Figure 3 Schematic diagram of the cross-sectional structure of the middle BB surface;
[0035] Figure 6 This is a three-dimensional structural schematic diagram of the fresh air device of the present invention;
[0036] Figure 7 This is a cross-sectional view of the drain pipe in the fresh air device of the present invention;
[0037] Figure 8 This is a schematic diagram of the assembly structure of an embodiment of the fresh air device provided by the present invention;
[0038] Figure 9 This is an exploded structural diagram of an embodiment of the fresh air device provided by the present invention;
[0039] Wherein: 1-shell; 11-air duct; 12-liquid supply chamber; 13-liquid distribution hole; 14-connecting flow channel; 15-water injection hole; 2-body; 3-fresh air inlet; 4-liquid collection pipe; 41-outer pipe; 411-first drain port; 42-inner pipe; 421-second drain port; 5-liquid collection shell;
[0040] 61-Face mask; 62-Fresh air assembly; 621-Fresh air fan blade; 63-Dull air assembly; 631-Dull air fan blade; 64-Fan blade motor; 65-Fresh air electrical box; 661-Base body; 662-Base plate; 67-Filter. Detailed Implementation
[0041] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the invention as detailed in the appended claims.
[0042] Current fresh air systems lack the function of treating fresh air. When fresh air enters the room through these systems, the untreated air can significantly impact human comfort. This invention provides an air treatment module that can be installed on a fresh air system to treat the incoming fresh air, thereby improving human comfort.
[0043] To address the above technical issues, this embodiment proposes an air handling module and a fresh air device.
[0044] The following is in conjunction with the appendix Figure 1-7 The technical solution of this embodiment is described in detail. Unless otherwise specified, the following implementation methods and embodiments can be combined with each other.
[0045] Example
[0046] On the one hand, the embodiments of the present invention propose a method such as Figures 1-5 The air handling module shown is used in a fresh air system. The air handling module includes:
[0047] The shell 1 has an inner wall that forms a cavity, which serves as an air duct 11 for air circulation.
[0048] The liquid supply chamber 12 is formed in the inner wall of the housing 1 or on the outside of the housing 1, and is used to supply air handling liquid into the air duct 11;
[0049] The liquid distribution hole 13 extends radially along the housing 1, with one end opening into the inner wall of the housing 1 and communicating with the air duct 11, and the other end communicating with the liquid supply chamber 12.
[0050] It should be noted that the air treatment liquids mentioned above can be any liquid that can treat air, such as disinfectants, cleaning water, or bactericides.
[0051] It should also be noted that although the liquid supply chamber 12 mentioned above can be located inside or outside the housing 1, in this embodiment, for ease of explanation, the liquid supply chamber 12 is specifically described as being located in the inner wall of the housing 1.
[0052] Specifically, when air enters the air duct 11 of the housing 1, the air treatment liquid can be mixed with the air through the liquid distribution hole 13, thereby achieving the air treatment effect.
[0053] More specifically, such as Figure 4 and Figure 5 As shown, the liquid distribution hole 13 is a conical hole, and the constricted end of the liquid distribution hole 13 is connected to the air duct 11. When pressure is applied to the liquid supply chamber 12, the liquid used to process the air can be discharged from the liquid distribution hole 13 in a near-mist or mist-like form, thereby improving the mixing effect of the liquid and the air in the air duct 11.
[0054] In any of the above embodiments, such as Figure 4 and Figure 5 As shown, the air treatment module is also equipped with a liquid-absorbing core made of capillary material. One end of the liquid-absorbing core extends into the air duct 11, and the other end is immersed in the liquid supply chamber 12. When air flows through the air duct 11, the liquid adsorbed in the liquid-absorbing core can be adsorbed into the air and mixed with the air without applying pressure to the liquid supply chamber 12, thereby achieving the same effect of air treatment.
[0055] Of course, in order to improve the mixing effect of liquid and air, it is preferable to spray the liquid into the air duct 11 in the form of a mist to mix with the air. For ease of explanation, the following description will also use the example of mixing liquid with air in the form of a spray.
[0056] In any of the above embodiments, such as Figure 4 and Figure 5 As shown, multiple liquid supply chambers 12 are provided, which are evenly distributed along the circumference of the housing 1; and each liquid supply chamber 12 is provided with multiple liquid distribution holes 13. By evenly arranging multiple liquid supply chambers 12 along the circumference of the housing 1 and providing multiple liquid distribution holes 13 on each liquid supply chamber 12, liquid can be sprayed into the air duct from all directions, thereby improving the treatment effect of air in the air duct 11.
[0057] More specifically, the liquid supply chamber 12 extends along the length of the housing 1, and the extension length of the liquid supply chamber 12 is 2 / 3 to 3 / 4 * the length of the housing 1; wherein multiple liquid distribution holes 13 corresponding to each liquid supply chamber 12 are evenly distributed along the length of the liquid supply chamber 12.
[0058] In any of the above embodiments, such as Figure 5 As shown, among the multiple liquid supply chambers 12 evenly distributed around the circumference of the shell, a connecting flow channel 14 is provided between each two adjacent liquid supply chambers 12. The connecting flow channel 14 is used to connect the two adjacent liquid supply chambers 12.
[0059] One of the multiple liquid supply chambers 12 is provided with a water injection hole 15, which is connected to a liquid injection mechanism (not shown in the figure).
[0060] It is worth noting that the width of the connecting channel 14 is 1 / 8 to 1 / 10 of the length of the liquid supply chamber 12, that is, the width of the connecting channel 14 is much smaller than the length of the liquid supply chamber 12. The advantage of setting the width of the connecting channel 14 to be small in this embodiment of the invention is that when the liquid injection mechanism injects liquid into the air duct 11, only a small pressure is needed to inject the liquid into the air duct 11 in a near-mist form. However, if the width of the connecting channel 14 is set too large or the connecting channel is eliminated and a ring-shaped liquid supply chamber 12 is directly set inside the housing 1, then the liquid injection mechanism needs a large pressure when injecting liquid into the air duct 11, which places higher demands on the performance of the liquid injection mechanism.
[0061] In any of the above embodiments, the number of the liquid supply chambers 12 is set to 4n, where n is an integer greater than or equal to 1. That is, 4, 8, 12, or other multiples of 4 liquid supply chambers 12 can be provided in the circumferential direction of the housing 1. The advantage of setting the liquid supply chambers 12 in the above manner is that it ensures that liquid supply chambers 12 are provided at all four quadrant points in the circumferential direction of the housing 1, that is, liquid supply chambers 12 are provided at the top, bottom, left, and right positions of the housing 1. Since the liquid distribution holes 13 are arranged along the length direction of the liquid supply chambers 12 (i.e., the air intake direction of the housing 1), it can be ensured that liquid distribution holes 13 are arranged at the top, bottom, left, and right positions of the housing 1, thereby ensuring that the liquid distribution holes 13 can treat the air in the air duct 11 from all directions.
[0062] In any of the above embodiments, the housing 1 is provided with at least one connection end, which allows the air handling module to be detachably mounted on the air inlet or the air outlet.
[0063] In any of the above embodiments, the housing 1 is provided with two connection ends, one of which is used to connect to the inlet of the air inlet duct and the other is used to connect to the outlet of the air outlet duct.
[0064] In any of the above embodiments, in order to facilitate the recovery of excess liquid in the air duct 11, the air handling module in this embodiment of the invention further includes a liquid collection pipe 4. One end of the liquid collection pipe 4 extends out of the housing 1, and the other end extends into the inner wall of the housing 1. It extends into the air duct 11 through the liquid supply chamber 12 and the liquid distribution hole 13 located at the bottom of the housing 1, or opens into the inner bottom wall of the housing 1 and is flush with the inner bottom wall of the housing 1.
[0065] Among them, the liquid collection tube 4 is a flexible tube.
[0066] When the fresh air device is exchanging fresh air, the air can directly enter the body 2 through the air duct 11 of the housing 1. When the air flows through the air duct 11, the liquid injection mechanism is activated, and the liquid used for air treatment is sprayed into the air duct 11 from the liquid distribution hole 13 and mixed with the air. Part of the liquid is mixed with the air and carried into the body 2 by the air, while the excess liquid falls to the bottom of the air duct 11.
[0067] When excess liquid in the air duct 11 falls to the bottom of the air duct 11, it can be discharged through the liquid collection pipe 4, thus facilitating the timely discharge of excess liquid in the air duct 11.
[0068] In any of the above embodiments, such as Figure 7 As shown, the liquid collecting tube 4 includes an outer tube 41 and an inner tube 42 that are nested together, and the inner tube 42 can rotate relative to the outer tube 41;
[0069] The outer tube 41 has a first drain port 411 connected to the liquid supply chamber 12 on its surface, and the inner tube 42 has a second drain port 421 adapted to the first drain port 411 on its surface.
[0070] When the second drain port 421 on the inner tube 42 is rotated to the region where it coincides with the first drain port 411, the liquid in the supply chamber 12 can flow into the inner tube 42 and be discharged through the first drain port 421 and the second drain port 411.
[0071] In this embodiment of the invention, by setting the liquid collection pipe 4 through the liquid supply chamber 12 and the liquid distribution hole 13, on the one hand, excess liquid in the air duct 11 can be collected; on the other hand, setting the liquid collection pipe 4 in the liquid distribution hole 13 can further reduce the size of the liquid outlet of the liquid distribution hole 12, so that the liquid sprayed from the liquid distribution hole 12 is closer to the mist form.
[0072] It should be noted that since the liquid collection pipe 4 is composed of two parts, an outer pipe 41 and an inner pipe 42, and the inner pipe 42 can also rotate relative to the outer pipe 41, when fresh air enters the fresh air duct 3, the inner pipe 42 in the liquid collection pipe 4 can be rotated so that the second drain port 421 on the surface of the inner pipe 42 does not coincide with the first drain port 411 on the surface of the outer pipe 41. At this time, the first drain port 411 on the surface of the outer pipe 41 is blocked by the outer wall of the inner pipe 42, and the liquid in the liquid supply chamber 12 will not flow into the liquid collection pipe 4, so the air handling operation can be performed normally. When the fresh air duct stops supplying fresh air, the inner tube 42 can be rotated so that the second drain port 421 on the surface of the inner tube 42 is rotated to the position of the first drain port 411 on the surface of the outer tube 41, so that the first drain port 411 and the second drain port 412 coincide. At this time, the liquid in the supply chamber 12 can flow into the inner tube 42 through the first drain port 411 and the second drain port 412, thereby cleaning the accumulated liquid in the supply chamber 12, thus preventing the accumulated liquid in the supply chamber 12 from accumulating for too long and breeding bacteria, thereby ensuring that the air blown into the room is cleaner and preventing the fresh air blown into the room from causing damage to human health.
[0073] It should also be noted that since the liquid collection pipe 4 is located at the bottom of the housing 1, it can drain all the accumulated liquid in the liquid supply chamber 12 in the housing 1, and the drainage effect is good.
[0074] In any of the above embodiments, such as Figure 5 As shown, in order to collect the liquid discharged from the liquid collection pipe 4, the bottom of the fresh air pipe 3 in this embodiment of the invention can also be detachably connected to the liquid collection shell 5, wherein the liquid collection pipe 4 placed outside the fresh air pipe 3 is connected to the inside of the liquid collection shell 5, and the liquid in the liquid collection pipe 4 can flow directly into the liquid collection shell 5 for collection.
[0075] In addition, the liquid collection shell 5 is made of transparent material, which makes it easy for users to observe the liquid level in the liquid collection shell 5 so that users can drain the liquid in the liquid collection shell 5 in a timely manner.
[0076] On the other hand, the embodiments of the present invention also provide a method such as Figure 6 The fresh air device shown includes a body 2 and the aforementioned air handling module;
[0077] The unit 2 is equipped with a fresh air inlet 3, and the air handling module is installed on the fresh air inlet 3. One end of the module is connected to the fresh air inlet 3, and the other end is connected to the fresh air inlet pipe that introduces fresh air from the outside into the room.
[0078] like Figure 8 and Figure 9As shown, the fresh air device includes a base, which includes a base body 661 and a base plate 662. The base body 661 forms a base air duct. Along the direction of fresh air flow, the base air duct forms a filter mounting position and a heat exchanger mounting position. A filter 67 is installed at the filter mounting position, which can filter the flowing fresh air. A heat exchanger is installed at the heat exchanger mounting position, and the heat exchanger forms staggered fresh air heat exchange channels and stale air heat exchange channels. The fresh air device also includes a fresh air component 62, a stale air component 63, and a fan motor 64. Both ends of the fresh air heat exchange channel are connected to the fresh air air duct, and the outdoor fresh air flowing through the fresh air air duct can flow through the fresh air heat exchange channel. The fresh air component 62 and the stale air component 63 are arranged side by side at the bottom of the base body 661. The fresh air component 62 includes a fresh air volute and a fresh air volute cover. The volute and the fresh air volute cover are fastened together to form a fresh air cavity, which has a fresh air cavity inlet and a fresh air cavity outlet. The air inlet of the fresh air duct is connected to the outside through a fresh air pipe, the air outlet of the fresh air duct is connected to the fresh air cavity inlet, and the fresh air cavity outlet is connected to the indoor environment. A fresh air fan blade 621 is rotatably installed inside the fresh air cavity. The stale air assembly 63 includes a stale air volute and a stale air volute cover, which are fastened together to form a stale air cavity, which has a stale air cavity inlet and a stale air cavity outlet. The air inlet of the stale air heat exchange duct is connected to the indoor environment, and the air outlet of the stale air heat exchange duct is connected to the stale air cavity inlet. The stale air cavity outlet is connected to the outside through an exhaust pipe. A stale air fan blade 631 is rotatably installed inside the stale air cavity, and a fan blade motor 64 is installed between the fresh air assembly 62 and the stale air assembly 63.
[0079] The output shaft of the fan motor 64 includes a first shaft end and a second shaft end. The first shaft end is driven and connected to the fresh air fan blade 621, and the second shaft end is driven and connected to the stale air fan blade 631. The fresh air device also includes a detection element and a fresh air electrical box 65. The detection element is used to detect the quality of fresh air. The fresh air electrical box 65 is equipped with a fresh air control board. The fresh air control board is electrically connected to both the detection element and the fan motor 64. The detection element detects the quality of fresh air and transmits the detection data to the fresh air control board. The fresh air control board controls the operation of the fan motor 64 according to the quality of fresh air, causing the fresh air fan blade 621 and the stale air fan blade 631 to rotate, thereby introducing outdoor fresh air into the room and exhausting indoor stale air to the outside.
[0080] The fresh air unit also includes a mask 61, and the base, fresh air component 62, stale air component 63 and fan motor 64 are all housed inside the mask 61.
[0081] In any of the above embodiments, the aforementioned fresh air device is a fresh air air conditioner with fresh air function.
[0082] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.
[0083] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.
[0084] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.
[0085] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.
Claims
1. An air handling module, characterized in that, include: The shell (1) has an inner wall that forms a cavity, which serves as an air duct (11) for air circulation. A liquid supply chamber (12) is formed in the inner wall of the housing (1) or on the outside of the housing (1) for supplying air handling liquid into the air duct; The liquid distribution hole (13) extends radially along the housing (1), with one end opening into the inner wall of the housing (1) and communicating with the air duct (11), and the other end communicating with the liquid supply chamber (12); The air handling module also includes a liquid collection pipe (4), one end of which extends out of the housing (1) and the other end extends into the inner wall of the housing (1). It extends into the air duct (11) through the liquid supply chamber (12) and liquid distribution hole (13) located at the bottom of the housing (1) or opens into the inner bottom wall of the housing and is flush with the inner bottom wall of the housing (1). The liquid collecting tube (4) includes an outer tube (41) and an inner tube (42) that are nested together, and the inner tube (42) can rotate relative to the outer tube (41); The outer tube (41) has a first drain port (411) that communicates with the liquid supply chamber (12) on its surface, and the inner tube (42) has a second drain port (421) that is adapted to the first drain port (411) on its surface. When the second drain port (421) on the inner tube (42) is rotated to the position area that coincides with the first drain port (411), the water in the supply chamber (12) can flow into the inner tube (42) through the first drain port (411) and the second drain port (421) and then be discharged.
2. The air handling module according to claim 1, characterized in that, The liquid distribution hole (13) is a conical hole, and the constricted end of the liquid distribution hole (13) is connected to the air duct (11).
3. The air handling module according to claim 1, characterized in that, The air handling module is equipped with a liquid-absorbing core made of capillary material. One end of the liquid-absorbing core extends into the air duct (11), and the other end is immersed in the liquid supply chamber (12).
4. The air handling module according to claim 1, characterized in that, The liquid supply chamber (12) is provided in multiple ways, and the multiple liquid supply chambers (12) are evenly distributed along the circumference of the shell (1); Each of the liquid supply chambers (12) is provided with a plurality of liquid distribution holes (13); A connecting channel (14) is provided between each pair of adjacent liquid supply chambers (12), and the connecting channel (14) is used to connect the two adjacent liquid supply chambers (12); One of the multiple liquid supply chambers (12) is provided with a water injection hole (15), and the water injection hole (15) is connected to an external liquid injection mechanism.
5. The air handling module according to claim 1, characterized in that, The housing (1) has at least one connection end, which allows the air handling module to be detachably mounted on the air inlet or the air outlet.
6. The air handling module according to claim 1, characterized in that, The housing (1) is provided with two connection ends, one of which is used to connect to the inlet of the air inlet pipe and the other is used to connect to the outlet of the air outlet pipe.
7. The air handling module according to any one of claims 1-6, characterized in that, The liquid collection tube (4) is a flexible tube.
8. The air handling module according to claim 1, characterized in that, The bottom of the air handling module is detachably connected to a liquid collection shell (5), and the liquid collection pipe (4) is connected to the inside of the liquid collection shell (5). The liquid collection shell (5) is a transparent shell.
9. A fresh air device, characterized in that, Includes the body (2) and the air handling module as described in any one of claims 1-8; The body (2) is provided with a fresh air inlet (3), and the air handling module is set on the fresh air inlet (3), with one end connected to the fresh air inlet (3) and the other end connected to the fresh air inlet pipe introduced from the outside into the room.
10. The fresh air device according to claim 9, characterized in that, The fresh air device is a fresh air air conditioner.
Citation Information
Patent Citations
Air processing module and air conditioner
CN107314451A
Simple air conditioner
CN206131245U
Air purification device and fresh air equipment
CN215597631U