Air inlet assembly and library preparation instrument

Abstract

The application provides an air inlet assembly and a library preparation instrument. The air inlet assembly comprises a buffer cavity and an air inlet cavity. The buffer cavity is in communication with the interior of the equipment through the air inlet cavity. The air inlet cavity comprises an air inlet shell. The air inlet shell encloses an air inlet cavity. One end of the air inlet cavity is in communication with the interior of the equipment. The opposite end of the air inlet cavity is provided with an air inlet hole. The air inlet assembly further comprises a fan. The fan is located in the air inlet cavity. The air inlet end of the fan faces the air inlet hole. The buffer cavity comprises a buffer shell and an air inlet piece. The buffer shell encloses a buffer cavity. The buffer shell is arranged around the air inlet hole and is fixedly connected with the air inlet shell. The air inlet piece is fixedly connected with the buffer shell and at least partially opposes the air inlet hole.

Description

Technical Field

[0001] This application relates to the field of noise control technology, and in particular to an air intake component and a library preparation instrument. Background Technology

[0002] Built-in fans are widely used in cleanrooms, portable clean rooms, clean benches, and various precision instruments and equipment to drive airflow and meet the functional requirements of local space such as airflow circulation, cleanliness, ventilation, or temperature control. These fan assemblies generally consist of a fan and an inlet housing that houses the fan. The fan rotation generates airflow, which is then transported to the target area along the air duct.

[0003] In related technologies, fan components typically focus on ensuring basic performance parameters such as air volume and air pressure. In actual operation, the high-speed rotation of the fan will generate significant aerodynamic noise and mechanical vibration noise. The airflow inside the compact housing can also easily cause turbulence noise. These noises are not effectively suppressed and are radiated outward through the air inlet housing and air outlet, resulting in excessive overall operating noise of the equipment. Summary of the Invention

[0004] Firstly, this application provides an air inlet assembly for supplying air to the interior of a device.

[0005] The air intake assembly includes a buffer cavity and an air intake cavity, and the buffer cavity is connected to the interior of the device through the air intake cavity; The air inlet cavity includes an air inlet housing and a fan. The air inlet housing forms the air inlet cavity. One end of the air inlet cavity is connected to the interior of the equipment, and the other end of the air inlet cavity is connected to the buffer cavity through an air inlet hole provided on the air inlet housing. The fan is located inside the air inlet cavity and the air inlet end of the fan faces the air inlet hole. The buffer cavity includes a buffer housing and an air inlet component. The buffer housing forms the buffer cavity. The buffer housing is disposed on the air inlet housing and surrounds the air inlet hole. One end of the buffer cavity is connected to the air inlet cavity through the air inlet hole, and the other end is provided with the air inlet component to communicate with the outside. The air inlet component is at least partially opposite to the air inlet hole.

[0006] In one possible implementation, the air inlet cavity further includes an air guide ring, which is flared and used to connect the air inlet hole and the air inlet end of the fan.

[0007] In one possible implementation, the air inlet cavity enclosed by the air inlet housing is a quadrangular prism. The air inlet cavity also includes an arc-shaped baffle, which is fixed at the corner of the inner side of the air inlet housing and restricts the air inlet cavity to a quadrangular prism shape with rounded corners.

[0008] In one possible implementation, the side panel of the air inlet housing is provided with electronic components; The air intake assembly also includes a flat baffle, which is fixed inside the air intake housing and used to shield the electronic components.

[0009] In one possible implementation, the air inlet housing includes a fixing frame located at one end of the air inlet cavity near the interior of the device and used for fixed connection with the housing of the device; The air intake assembly also includes a crossbeam and a shock absorber located within the fixed frame, with the opposite ends of the crossbeam fixedly connected to the fixed frame via the shock absorber. The fan is fixed to the crossbeam.

[0010] In one possible implementation, the shock absorber is a rubber column, with its opposite ends fixedly connected to the crossbeam and the fixed frame, respectively.

[0011] In one possible implementation, the end of the crossbeam for connection with the damper has a thinned step; The shock absorber is fixed to the step surface of the thinned step.

[0012] In one possible implementation, the distance between the air inlet component and the panel of the air inlet housing where the air inlet hole is located is 5 to 40 millimeters.

[0013] In one possible implementation, the air intake assembly further includes sound-absorbing cotton attached to the inner wall of the air intake cavity.

[0014] In one possible implementation, the air intake assembly further includes a filter fixed to the air intake housing, the filter being used to filter gas entering the interior of the device through the air intake assembly.

[0015] Secondly, this application provides a library preparation instrument, including a housing and an air inlet assembly as described above disposed on the housing, wherein the housing is provided with ventilation holes. The air intake assembly is used to introduce air into the housing through the ventilation holes. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. These drawings are incorporated in and constitute a part of this specification. They illustrate embodiments conforming to this disclosure and, together with the specification, serve to explain the technical solutions of this disclosure. It should be understood that the following drawings only show some embodiments of this disclosure and should not be considered as limiting the scope. Those skilled in the art can obtain other related drawings based on these drawings without creative effort.

[0017] Figure 1 This is one of the overall schematic diagrams of the air intake assembly in the embodiments of this application; Figure 2 This is the second overall schematic diagram of the air intake assembly in the embodiments of this application; Figure 3 This is a schematic diagram of the air intake component in the embodiments of this application; Figure 4 This is a schematic diagram of the air inlet housing in an embodiment of this application; Figure 5 This is a schematic diagram of the crossbeam and shock absorber in an embodiment of this application. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the application will now be described in further detail with reference to the accompanying drawings.

[0019] It should be noted that, unless otherwise defined, the technical or scientific terms used in one or more embodiments of this specification should have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar words used in one or more embodiments of this specification do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0020] To facilitate understanding of the air intake assembly provided in the embodiments of this application, its application scenarios will be described first. The air intake assembly provided in the embodiments of this application can be applied to precision instruments such as document preparation instruments, or to clean rooms, clean benches, etc.

[0021] Built-in fans are widely used in cleanrooms, portable clean rooms, clean benches, and various precision instruments and equipment to drive airflow and meet the functional requirements of local space such as airflow circulation, cleanliness, ventilation, or temperature control. These fan assemblies generally consist of a fan and an inlet housing that houses the fan. The fan rotation generates airflow, which is then transported to the target area along the air duct.

[0022] In related technologies, fan components typically focus on ensuring basic performance parameters such as air volume and air pressure. In actual operation, the high-speed rotation of the fan will generate significant aerodynamic noise and mechanical vibration noise. The airflow inside the compact housing can also easily cause turbulence noise. These noises are not effectively suppressed and are radiated outward through the air inlet housing and air outlet, resulting in excessive overall operating noise of the equipment.

[0023] Based on this, this application provides an air intake assembly for supplying air into the interior of a device, aiming to suppress noise from the air intake assembly. The air intake assembly provided in this application will be described in detail below with reference to the accompanying drawings.

[0024] Please refer to the above. Figure 1 , Figure 2 , Figure 3 and Figure 4 , Figure 1 This is one of the overall schematic diagrams of the air intake assembly in the embodiments of this application. Figure 2 This is the second overall schematic diagram of the air intake assembly in the embodiments of this application. Figure 3 This is a schematic diagram of the air intake component in an embodiment of this application. Figure 4 This is a schematic diagram of the air inlet housing in an embodiment of this application.

[0025] The air intake assembly includes a buffer chamber 4 and an air intake chamber 1. The buffer chamber 4 is connected to the interior of the equipment through the air intake chamber 1. Specifically, the air intake chamber 1 is sandwiched between the buffer chamber 4 and the interior of the equipment. Air from outside the equipment can enter the air intake chamber 1 through the buffer chamber 4 and then enter the interior of the equipment through the air intake chamber 1.

[0026] The air inlet cavity 1 includes an air inlet housing 11, which forms an air inlet cavity 100. One end of the air inlet cavity 100 communicates with the interior of the equipment, and the other end of the air inlet cavity communicates with the buffer cavity 4 through an air inlet hole 112 provided on the air inlet housing 11. Specifically, the air inlet housing 11 can form an air inlet cavity of various shapes, such as cylindrical, square prism, and hexagonal prism. For example, the air inlet housing 11 is a sheet metal part, and is formed by bending into shapes such as... Figure 3 The quadrangular prism-shaped air inlet cavity 100 is shown.

[0027] The air intake assembly also includes a fan 2. The fan 2 of the air intake assembly provided in this application is supported on the air intake housing 11, and the fan 2 is used to supply air into the equipment. Specifically, the air intake assembly provided in this application is used to be fixedly installed on the housing 0 of the equipment. The housing 0 of the equipment is provided with a ventilation hole 01, and the air intake assembly is installed at the ventilation hole 01 on the housing 0 of the equipment and is used to pump air from outside the equipment into the equipment through the ventilation hole 01.

[0028] The air inlet housing 11 can be fixed to the equipment housing 0 by various methods such as snap-fitting, welding, and riveting. For example, such as... Figure 1 or Figure 2 The air inlet housing 11 shown has a flange at its edge close to the housing 0 of the equipment. The flange is fixedly connected to the housing 0 to fix the air inlet housing 11 to the housing 0 of the equipment.

[0029] The air inlet chamber is open or semi-open. One end of the air inlet chamber is connected to the interior of the equipment, meaning that one end of the air inlet chamber at least partially overlaps with the ventilation hole 01 on the housing 0. The opposite end of the air inlet chamber is provided with an air inlet hole 112, which allows gas to enter the air inlet chamber.

[0030] In the specific configuration of fan 2, fan 2 is located inside the air inlet chamber with its air inlet end facing the air inlet hole 112. Specifically, fan 2 can be a centrifugal fan 2 or other types of fans, such as a ducted fan 2. When fan 2 is operating, it can draw in air from the air inlet end, accelerate the air, and then send it out from the output end. When fan 2, which is located inside the air inlet chamber with its air inlet end facing the air inlet hole 112, is operating, fan 2 draws in air from outside the equipment through the air inlet hole 112, accelerates the air, and then pumps it into the equipment through the ventilation holes 01 on the equipment casing 0. The air pumped into the equipment can be used to dissipate heat from the equipment, or the air pumped into the equipment can be filtered to create a clean space using the air inlet assembly.

[0031] The air intake assembly provided in this application also includes a buffer cavity 4, which includes a buffer housing 41 and an air intake component 42. The buffer housing 41 forms a buffer cavity 200. The buffer housing 41 is disposed on the air intake housing 11 and surrounds the air intake hole 112 of the air intake housing 11. One end of the buffer cavity 200 is connected to the air intake cavity 1 through the air intake hole 112, and the other end is provided with the aforementioned air intake component 42 to communicate with the outside. The air intake component 42 is at least partially opposite to the air intake hole 112. It can be understood that with this arrangement, the air intake component 42 and the panel of the air intake housing 11 where the air intake hole 112 is located are spaced apart. Specifically, the buffer housing 41 forms a buffer cavity 200, and the gas outside the equipment first enters the buffer cavity through the air intake component 42, and then reaches the air intake end of the fan 2.

[0032] The air inlet 42 can be a grille, filter, or other component that allows air to pass through, while also blocking larger debris such as paper scraps, dust clumps, and thread ends, preventing the fan 2 from sucking these debris into the air inlet housing 11. The air inlet 42 can also prevent fingers or tools from accidentally sticking in, thus protecting operators by meeting safety regulations.

[0033] However, when the fan 2 is running, it draws in air through the air inlet 42. If the air inlet 42 directly covers the air inlet of the fan 2, the air will flow through the air inlet 42 at a relatively high velocity when the fan 2 draws in air, and the airflow is prone to violent and unstable interaction with the air inlet 42. For example, when the airflow hits the air inlet 42, the airflow is forced to change direction and generate eddies, which in turn generate noise. Similarly, the airflow is prone to generating eddies when passing through the openings of the air inlet 42, which also generates noise.

[0034] The air intake assembly provided in this application uses a buffer housing 41 to separate the air intake component 42 from the air intake end of the fan 2 by a certain distance, and uses the buffer housing 41 to form a buffer cavity 200. This arrangement can reduce the airflow speed through the air intake component 42, thereby reducing the noise generated when the airflow passes through the air intake component 42.

[0035] When specifically configuring the buffer housing 41, the buffer cavity 200 enclosed by the buffer housing 41 can also be cylindrical, square prism, hexagonal prism, etc. For ease of production and assembly, the buffer housing 41 can be manufactured to have the same shape as the air inlet housing 11. For example... Figure 1 or Figure 2 The air intake assembly shown has a buffer housing 41 and an air intake housing 11, both of which are quadrangular prisms and are stacked on top of each other.

[0036] In some possible implementations, such as Figure 1 or Figure 2 The air intake assembly shown has a buffer housing 41 with a sheet metal structure similar to that of the air intake housing 11, and is fixedly connected to the air intake housing 11 by sheet metal flanges. Of course, in some other possible embodiments, the buffer housing 41 may also be integrally formed with the air intake housing 11.

[0037] In summary, the air intake assembly provided in this application, by setting a buffer cavity 4 on the side of the air intake cavity 1 away from the inside of the device, can reduce the intensity of the gas vortex generated during the operation of the air intake assembly, thereby effectively suppressing the noise during the operation of the air intake assembly.

[0038] In one possible implementation, the air inlet cavity 1 further includes an air guide ring 12, which is funnel-shaped and used to connect the air inlet hole 112 and the air inlet end of the fan 2. In this way, the air outside the equipment first arrives at the partial buffer cavity enclosed by the buffer housing 41, and then arrives at the air inlet end of the fan 2 through the air guide ring 12.

[0039] Specifically, the air guide ring 12 can be shaped like an approximate frustum or truncated cone. For example, the air guide ring 12 has two openings of different sizes at opposite ends, wherein the end with the smaller opening is fixedly connected to the air inlet end of the fan 2, while the end with the larger opening is fixedly connected to the air inlet housing 11 and at least partially covers the air inlet hole 112.

[0040] If the air inlet of the fan 2 is not equipped with a guide ring 12, air will be drawn from all directions by the fan 2, which will increase the risk of airflow turbulence near the air inlet of the fan 2, resulting in louder noise during the operation of the fan 2 without a guide ring 12.

[0041] This application provides an air guide ring 12 at the air inlet of the fan 2. The air guide ring 12 can help guide the airflow near the air inlet to accelerate smoothly and gradually, thereby reducing the generation of airflow turbulence and further suppressing the noise generated by the air inlet assembly.

[0042] It is worth noting that the noise from the fan 2 assembly comes not only from airflow eddies but also from the mechanical vibrations generated during its operation. Therefore, suppressing or isolating the mechanical vibrations of the fan 2 assembly can also help reduce the operating noise of the fan 2 assembly.

[0043] Please refer to the above. Figure 5 , Figure 5 This is a schematic diagram of the crossbeam and shock absorber in an embodiment of this application.

[0044] In one possible implementation, when specifically configuring the air inlet housing 11, the air inlet housing 11 includes a fixing frame 113, which is located at one end of the air inlet cavity 100 near the interior of the equipment and is used for fixed connection with the equipment housing 0. The air inlet assembly also includes a crossbeam 5 and a shock absorber 6 located within the fixing frame 113, with opposite ends of the crossbeam 5 fixedly connected to the fixing frame 113 via the shock absorber 6; the fan 2 is fixed to the crossbeam 5.

[0045] Specifically, the fixing frame 113 can be presented as a ring-shaped plate, which is used to attach and fix to the housing 0 of the equipment. The inner circle of the ring-shaped plate can be regarded as an opening, which at least partially overlaps with the ventilation hole 01 on the housing 0 of the equipment, thereby realizing the communication between the air inlet cavity and the interior of the equipment. The crossbeam 5 spans the inner circle of the ring-shaped plate and is fixedly connected to the fixing frame 113 through the shock absorber 6, and the fan 2 is fixed on the crossbeam 5.

[0046] The damping component 6 can take the form of a rubber block, a hydraulic / pneumatic / spring damper, a damping spring, etc. After the fan 2 and the crossbeam 5 are fixedly connected, the fan 2 and the crossbeam 5 form a rigid assembly, and the crossbeam 5 will vibrate with the mechanical vibration of the fan 2.

[0047] The equipment casing 0 is typically a large plate. Resonance between the air inlet casing 11 and the fan 2 will cause noise in the equipment casing 0. By connecting the crossbeam 5 and the air inlet casing 11 with the shock absorber 6, the mechanical vibration transmitted by the crossbeam 5 through the air inlet casing 11 to the equipment casing 0 can be suppressed, reducing the risk of resonance between the equipment casing 0 and the fan 2, thereby helping to suppress the operating noise of the air inlet assembly.

[0048] As an optional implementation, the shock absorber 6 is a rubber column, with its two opposite ends fixedly connected to the crossbeam 5 and the fixing frame 113, respectively. In a specific example, the rubber column includes two axial ends, one end of which is fixedly connected to the crossbeam 5 by bolts, and the other end is fixedly connected to the fixing frame 113 by bolts. Of course, in other optional implementations, the rubber column can also be fixed to the crossbeam 5 and the fixing frame 113 by adhesive bonding, snap-fitting, or other methods.

[0049] The columnar structure of damping columns can maintain good stability when subjected to both compressive and shear stresses. In addition, rubber columns offer advantages such as low cost and easy installation.

[0050] As an optional implementation, when specifically configuring the crossbeam 5, the end of the crossbeam 5 used for connecting with the shock absorber 6 has a thinning step, and the shock absorber 6 is fixed to the step surface of the thinning step. By setting the thinning step, the space occupied by the crossbeam 5 in the motor axial direction can be reduced, making the structure of the fan 2 assembly more compact.

[0051] As an optional implementation, when specifically setting the air inlet housing 11, the air inlet housing 11 is a quadrangular prism, and the air inlet cavity 100 formed by the air inlet housing 11 is also a quadrangular prism. This shape of the air inlet housing 11 is convenient for manufacturing and also has a better appearance.

[0052] The air intake assembly also includes an arc-shaped baffle 7, which can be fixed to the inner corner of the air intake housing 11 by means of bonding, welding, snap-fitting, etc., and restricts the air intake cavity 100 to a quadrangular prism with rounded corners. Specifically, there can be four arc-shaped baffles 7, which are respectively set at the four corners of the inner side of the air intake housing 11.

[0053] The arc-shaped baffle 7 can fill the sharp spaces at the inner corners of the air inlet housing 11, guiding the airflow along a smooth arc, thereby preventing the airflow from directly impacting the sharp corners and forming turbulent vortices, thus suppressing the noise during the operation of the fan 2 assembly.

[0054] In some embodiments, the fan 2 can be a centrifugal fan 2, which has the characteristics of high air pressure and large air volume. For the centrifugal fan 2, the air blown out from its outlet will swirl in the air inlet cavity. By setting the arc-shaped baffle 7, the energy loss caused by the airflow directly impacting the corners can be reduced, thereby improving the working efficiency of the centrifugal fan 2.

[0055] As an optional implementation, when specifically configuring the air intake housing 11, electronic devices are provided on the side panel of the air intake housing 11. These electronic devices may include, but are not limited to, the electronic control components of the air intake assembly, the switches, indicator lights, display screens and other human-computer interaction components of the air intake assembly, and sensing components such as wind speed sensors, temperature sensors, and air quality sensors of the air intake assembly. The placement of these electronic devices on the side panel of the air intake housing 11 can improve the integration of the air intake assembly.

[0056] The air intake assembly also includes a flat baffle 8, which is fixed inside the air intake housing 11 and used to shield the electronic components. When the electronic components are located on the side of the air intake housing 11, the electronic components themselves or the connectors used to fix the electronic components may form various uneven structures such as protrusions and depressions on the inside of the air intake housing 11. When airflow passes through these parts, eddies are easily generated, which increases the noise of the air intake assembly. By setting the flat baffle 8 to shield the electronic components, eddies generated near the electronic components can be suppressed, thereby suppressing the noise of the air intake assembly.

[0057] As an optional implementation, when specifically setting the air inlet component 42, the distance d between the air inlet component 42 and the panel of the air inlet housing 11 where the air inlet hole 112 is located is 5~40 mm. Specifically, the distance d between the air inlet component 42 and the panel of the air inlet housing 11 where the air inlet hole 112 is located can be 5 mm, 15 mm, 25 mm, 35 mm, 40 mm, etc. For the air inlet component 42, which is spaced apart from the air inlet hole 112, if the distance between the air inlet component 42 and the air inlet hole 112 is too close, the volume of the buffer cavity 200 will be too small, and the noise suppression effect of the buffer cavity 200 will not be obvious; if the distance between the air inlet component 42 and the air inlet hole 112 is too far, it will significantly increase the thickness of the air inlet assembly, resulting in a bulky air inlet assembly structure and increasing the resistance of the fan 2 in drawing air. By setting the distance between the air inlet component 42 and the air inlet hole 112 to 5~40 mm, the space occupied by the buffer cavity 200 is minimized while achieving a better noise suppression effect.

[0058] Based on any of the solutions provided in this application, the core parameters for forming the buffer cavity have been optimized and limited. The spacing between the air inlet component 42 and the panel of the air inlet housing 11 where the air inlet hole 112 is located is 5 to 40 mm. This spacing distance is the preferred range obtained after balancing noise reduction effect, structural compactness, and air intake efficiency. If the spacing is less than 5 mm, the space between the air inlet component 42 and the panel of the air inlet hole 112 is too narrow, and an effective buffer layer cannot be formed. The airflow will still impact the air inlet component 42 at a high speed here, the noise reduction effect is not obvious, and it is easy to generate high-frequency howling due to the small gap. If the spacing is greater than 40 mm, although the buffering effect is better, it will significantly increase the overall thickness of the air intake assembly, occupy valuable space inside the equipment, and may also cause the airflow to diffuse excessively in the excessively long buffer cavity 200, reducing the airflow velocity entering the air inlet hole 112 and affecting the air intake efficiency. Within a range of 5-40 mm, a highly efficient "static pressure chamber" effect can be formed, which fully homogenizes the turbulent airflow entering the air inlet 42, allowing it to flow towards the air inlet 112 in a stable and low-speed state, thereby achieving the best balance between noise reduction and space efficiency. For example, in some precision instruments with extremely high noise requirements, this interval can be set to 20-30 mm.

[0059] As an optional implementation, the air intake assembly provided in this application embodiment also includes sound-absorbing cotton, which is attached to the inner wall of the air intake cavity.

[0060] During operation of the air intake assembly, the airflow within the air intake cavity and the friction between the airflow and the inner wall of the air intake housing 11 are also sources of noise. By attaching sound-absorbing cotton to the inner wall of the air intake cavity 100, the numerous micropores and fiber structure inside the sound-absorbing cotton can effectively absorb and attenuate the airflow noise within the air intake cavity, thereby further suppressing the operating noise of the air intake assembly.

[0061] As an optional implementation, when the air intake assembly includes a buffer cavity, sound-absorbing cotton can also be attached to the inner wall of the buffer housing 41, thereby using the sound-absorbing cotton to absorb and attenuate the airflow noise in the buffer cavity, thereby further suppressing the operating noise of the air intake assembly.

[0062] As an optional implementation, when selecting sound-absorbing cotton, self-adhesive sound-absorbing cotton can be used. Such sound-absorbing cotton can be attached and fixed to the inner wall of the air inlet housing 11 or the inner wall of the buffer housing 41 using its own adhesive, which can improve the ease of assembly of the sound-absorbing cotton and thus improve the production efficiency of the air inlet assembly.

[0063] As an optional implementation, when specifically setting the air intake assembly, the air intake assembly also includes a filter, which is fixed to the air intake housing 11 and located between the air intake cavity and the interior; the filter is used to filter the gas entering the interior of the equipment through the air intake assembly.

[0064] For some precision equipment, the cleanliness of the internal environment of the equipment casing is crucial, as even tiny dust particles can interfere with the normal operation of the equipment. By installing filters in the air intake path of the air intake assembly, pollutants such as dust and microorganisms in the outside air can be effectively intercepted, ensuring a high level of cleanliness in the air supplied to the equipment. Integrating the filtration function into the air intake assembly makes the overall structure of the equipment more compact.

[0065] This application also provides a library preparation apparatus, which includes a housing and an air intake assembly as described above disposed on the housing. The housing has ventilation holes, and the air intake assembly is fixed in the area of ​​the ventilation holes, drawing air into the housing through the ventilation holes.

[0066] The air intake component used in the library preparation instrument provided in this application can reduce the intensity of the gas vortex generated during the operation of the air intake component by setting a buffer cavity 4 on the side of the air intake cavity 1 away from the inside of the equipment, thereby effectively suppressing the noise during the operation of the air intake component.

[0067] One or more embodiments of this specification are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments of this specification should be included within the scope of protection of this disclosure.

[0068] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An air inlet assembly, used for supplying air to the interior of equipment, characterized in that, The air intake assembly includes a buffer cavity and an air intake cavity, and the buffer cavity is connected to the interior of the device through the air intake cavity; The air inlet cavity includes an air inlet housing and a fan. The air inlet housing forms the air inlet cavity. One end of the air inlet cavity is connected to the interior of the equipment, and the other end of the air inlet cavity is connected to the buffer cavity through an air inlet hole provided on the air inlet housing. The fan is located inside the air inlet cavity and the air inlet end of the fan faces the air inlet hole. The buffer cavity includes a buffer housing and an air inlet component. The buffer housing forms the buffer cavity. The buffer housing is disposed on the air inlet housing and surrounds the air inlet hole. One end of the buffer cavity is connected to the air inlet cavity through the air inlet hole, and the other end is provided with the air inlet component to communicate with the outside. The air inlet component is at least partially opposite to the air inlet hole.

2. The air intake assembly according to claim 1, characterized in that, The air inlet cavity also includes an air guide ring, which is flared and used to connect the air inlet hole and the air inlet end of the fan.

3. The air intake assembly according to claim 1, characterized in that, The air inlet cavity formed by the air inlet housing is a quadrangular prism shape; The air inlet cavity also includes an arc-shaped baffle, which is fixed at the corner of the inner side of the air inlet housing and restricts the air inlet cavity to a quadrangular prism shape with rounded corners.

4. The air intake assembly according to claim 3, characterized in that, Electronic components are provided on the side panel of the air inlet housing; The air intake assembly also includes a flat baffle, which is fixed inside the air intake housing and used to shield the electronic components.

5. The air intake assembly according to claim 1, characterized in that, The air inlet housing includes a fixing frame, which is located at one end of the air inlet cavity near the interior of the device and is used to fix it to the housing of the device. The air intake assembly also includes a crossbeam and a shock absorber located within the fixed frame, with the opposite ends of the crossbeam fixedly connected to the fixed frame via the shock absorber. The fan is fixed to the crossbeam.

6. The air intake assembly according to claim 5, characterized in that, The shock absorber is a rubber column, and the two opposite ends of the rubber column are fixedly connected to the crossbeam and the fixed frame, respectively.

7. The air intake assembly according to claim 5, characterized in that, The end of the crossbeam that is connected to the damper has a thinned step; The shock absorber is fixed to the step surface of the thinned step.

8. The air intake assembly according to claim 1, characterized in that, The distance between the air inlet component and the panel of the air inlet housing where the air inlet hole is located is 5 to 40 mm.

9. The air intake assembly according to claim 1, characterized in that, The air intake assembly also includes sound-absorbing cotton, which is attached to the inner wall of the air intake cavity.

10. A library preparation instrument, characterized in that, Includes a housing, and an air intake assembly as described in any one of claims 1 to 9 disposed on the housing, wherein the housing is provided with ventilation holes; The air intake assembly is used to introduce air into the housing through the ventilation holes.

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