Large-air-volume air cabinet

Abstract

The utility model relates to a large-air-volume air cabinet. The utility model relates to a large-air-volume air cabinet, which comprises a cabinet body, a cabinet body air inlet and a cabinet body air outlet, a cabinet body air outlet is formed in the other end of the cabinet body; the fan assembly is fixedly arranged in the cabinet body; the fan assembly comprises a plurality of fan units which are detachably connected, each fan unit is provided with a fan and an air duct, and the fan is arranged at the initial end of an air flow path of the air duct; the tail end of the air channel airflow flow path is provided with fan air outlets, and the multiple fan air outlets are arranged at the cabinet body air outlet in a row, so that the air outlet airflow directions of the multiple fan air outlets are parallel to one another. According to the large-air-volume air cabinet, the fan assembly formed by integrating the multiple sets of fan units is adopted, and noise reduction can be effectively achieved by reducing the rotating speed of the fan of the single fan unit; the independent draught fan and the air flue are arranged for each draught fan unit for independent air outlet, mutual interference of airflow of the adjacent draught fans is avoided, and the air outlet efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, in particular to a wind cabinet with large air volume. Background Art

[0002] As people's requirements for indoor health and comfort continue to increase, more and more indoor buildings have begun to use large-volume centralized processing wind cabinets to perform functions such as cooling and heating, reheating, sterilization, and filtration on indoor return air and outdoor fresh air to achieve a better comfort and health experience. In order to ensure the air supply volume, the current large-volume wind cabinets often increase the power of the fan, and in order to maintain the minimum air supply volume, the fan speed is faster and the noise is higher. In this case, the wind cabinet is large in size, occupies a large space and has high energy consumption. In the prior art, there are also some large-volume wind cabinets that also use multiple fans to supply air to achieve noise reduction, but the airflows between multiple fans will interfere with each other and flow in series; and the airflows of two adjacent fans will produce direct impacts, affecting the efficiency of the fan. Utility Model Content

[0003] Based on this, the purpose of the utility model is to provide a large air volume wind cabinet, which adopts a fan assembly integrating multiple groups of fan units, can effectively achieve noise reduction by reducing the fan speed of a single fan unit; by setting an independent fan and air duct for each group of fan units to independently discharge air, mutual interference of adjacent fan airflows is avoided, and air discharge efficiency is improved. In addition, the number of fan units of the fan assembly can be designed according to the actual air volume requirements to avoid energy waste.

[0004] A large air volume wind cabinet, comprising:

[0005] A cabinet, wherein one end of the cabinet is provided with a cabinet air inlet; the other end of the cabinet is provided with a cabinet air outlet;

[0006] A fan assembly is fixedly arranged inside the cabinet; the fan assembly includes a plurality of detachably connected fan units, each of which is provided with a fan and an air duct, and the fan is arranged at the initial end of the air flow path of the air duct; a fan outlet is opened at the end of the air flow path of the air duct, and a plurality of the fan outlets are arranged side by side at the cabinet outlet, so that the air flow directions of the plurality of fan outlets are parallel to each other.

[0007] Furthermore, the cabinet air outlet is arranged at the lower end of one side wall of the cabinet and is square; the fan air outlet is embedded in the cabinet air outlet in parallel along the length direction of the cabinet air outlet;

[0008] A fan air inlet is provided at the initial end of the air flow path of the air duct, and the fan air inlet is arranged toward the cabinet air inlet.

[0009] Furthermore, the fan card is arranged at the fan air inlet; the air duct gradually converges along the air flow direction, and the cross-section of the air duct is a square or a rectangle with a plane perpendicular to the air flow direction as the cross-section.

[0010] Furthermore, a filter assembly is fixedly mounted on the air inlet end of the cabinet; the filter assembly is provided with a primary filter element and a high-efficiency filter element, and the primary filter element is a pleated structure and is arranged between the high-efficiency filter element and the air inlet of the cabinet.

[0011] Furthermore, a sterilization component is fixedly arranged in the cabinet; the sterilization component is arranged at a downstream position of the filter component along the air flow direction.

[0012] Furthermore, a heat exchange and humidification component is fixedly arranged inside the cabinet and located between the filter component and the fan component; the heat exchange and humidification component includes a heat exchange module and a humidification module, and the humidification module is arranged between the heat exchange module and the fan component.

[0013] Furthermore, the heat exchange module includes a surface cooler and a drainage unit; the surface cooler is arranged obliquely relative to the horizontal plane;

[0014] The side wall of the cabinet is provided with a drainage hole;

[0015] The drainage unit includes a water receiving trough and a drainage pipe; the water receiving trough is arranged below the lower end of the surface cooler; one end of the drainage pipe is conductively connected to the water receiving trough, and the other end is connected to the drainage hole.

[0016] Furthermore, each end of the surface cooler is respectively in contact with the side wall of the cabinet, and the angle between the surface cooler and the horizontal plane is 65°-75°.

[0017] Furthermore, the heat exchange and humidification component also includes a reheater, which is fixed in the cabinet and arranged at an upstream position of the fan component along the air flow direction.

[0018] Furthermore, the cabinet air inlet includes a fresh air inlet and a return air inlet; the fresh air inlet and / or the return air inlet are arranged on the top surface of the cabinet, or the fresh air inlet and / or the return air inlet are arranged on the side wall of the cabinet close to the top surface; a fresh air valve is provided at the fresh air inlet.

[0019] The beneficial effects of the utility model are:

[0020] (1) The modular multi-fan unit parallel design is adopted to reduce the speed output of a single fan unit, significantly reduce noise, and facilitate maintenance;

[0021] (2) By using air duct guidance for a single fan unit, the mutual influence of the air output of adjacent fan units in the fan assembly is reduced, thereby improving the air output efficiency;

[0022] (3) The flow channel inside the entire wind cabinet adopts a unidirectional flow design, with small resistance loss along the way, no eddy current resonance, low unit operation noise, and the air outlet is set in a square shape and is set under the cabinet, which is suitable for floor air supply system;

[0023] (4) By placing the cooler at an angle, the thickness of the whole machine and the heat exchange efficiency of the cooler can be taken into consideration;

[0024] (5) By installing a reheater, the airflow can be supplemented with heat in extreme weather conditions.

[0025] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of the cabinet provided in the embodiment of the present application;

[0027] Figure 2 A schematic diagram of the structure of a high-air-volume air cabinet provided in an embodiment of the present application;

[0028] Figure 3 is a schematic diagram of the structure of a fan assembly;

[0029] Figure 4 This is a cross-sectional view of the wind cabinet.

[0030] In the figure: 10-cabinet; 11-cabinet air inlet; 111-return air inlet; 112-fresh air inlet; 12-cabinet air outlet; 13-cabinet body; 14-inspection door; 15-drain hole; 16-water inlet; 20-fan assembly; 21-fan unit; 211-air duct; 2111-fan air inlet; 2112-fan air outlet; 2113-first side wall; 2114-second side wall; 2115 -first guide wall; 2116-second guide wall; 212-fan; 30-filter assembly; 31-primary filter element; 32-high efficiency filter element; 40-sterilization assembly; 50-heat exchange and humidification assembly; 51-heat exchange module; 511-cooler; 512-drainage unit; 5121-water tank; 5122-drainage pipe; 52-humidification module; 521-humidifier; 522-humidification pipe; 53-reheater. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] In the description of the present invention, it should be noted that the terms "vertical direction", "upper", "lower", "horizontal" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, or a connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Existing wind cabinets with large air volume also achieve noise reduction by using multiple fans to supply air, but the airflows between multiple fans will interfere with each other and flow in series; and the airflows of two adjacent fans will produce a direct impact, affecting the efficiency of the fan.

[0035] Based on this, the high-volume air cabinet provided in the embodiment of the present application adopts a fan assembly integrated with a fan unit, and multiple fans work simultaneously, and noise reduction is effectively achieved by reducing the speed of a single fan. In addition, the fan unit is independently provided with an air duct to overcome the interference of airflow between adjacent fans and improve the air outlet efficiency; at the same time, the air duct is designed to guide the air path downstream of the fan, so that each fan unit discharges air in parallel to avoid direct impact of the airflow of adjacent fans.

[0036] See also Figure 1-4The embodiment of the present application provides a large air volume wind cabinet, comprising: a cabinet 10 and a fan assembly 20 disposed inside the cabinet 10. The cabinet 10 is provided with a cabinet air inlet 11 at one end and a cabinet air outlet 12 at the other end, so that the air flow inside the cabinet 10 has a single direction, which can improve the air supply efficiency of the wind cabinet. The fan assembly 20 is fixed inside the cabinet 10, near the cabinet air outlet 12.

[0037] Specifically, the fan assembly 20 includes a plurality of detachably connected fan units 21, and the fan unit 21 is provided with a fan 212 and an air duct 211. The fan 212 is arranged at the initial end of the airflow path of the air duct 211, and a fan outlet 2112 is provided at the end of the airflow path of the air duct 211. After the fan 212 draws the airflow into the air duct 211, it guides the airflow through the air duct 211, and then blows it out from the fan outlet 2112. The plurality of fan outlets 2112 are arranged in a row and are arranged directly opposite to the cabinet air outlet 12, so that the airflow directions of the plurality of fan outlets 2112 are parallel to each other. Under this arrangement, the airflow path of each fan unit 21 is independent, and the airflows of multiple fan units 21 will not flow in series, and will not interfere with the airflows of adjacent fan units 21. At the same time, by setting the fan 212 at the initial end of the air flow path of the air duct 211, the air flow sucked into the air duct 211 by the fan 212 is guided through a section of the air duct 211, which can reduce the vortex at the fan outlet 2112 and the air flow collision, thereby improving the efficiency of the fan 212.

[0038] Further, in some embodiments, the cabinet air outlet 12 is arranged at the lower end of the side wall of the cabinet 10, and is square, preferably in the shape of a strip along the horizontal direction, which can be applied to the ground air supply system without drilling holes through the beam, thereby eliminating safety risks. In this arrangement, the fan air outlet 2112 is sequentially and parallelly embedded in the cabinet air outlet 12 along the length direction of the cabinet air outlet 12. Preferably, the plane of the fan air outlet 2112 is coplanar with the plane of the cabinet air outlet 12, or protrudes from the cabinet air outlet 12 to the outside of the cabinet 10, so as to ensure that the airflow is blown out of the cabinet 10, and to avoid part of the airflow from flowing back into the cabinet 10, which reduces the air supply efficiency of the fan assembly 20.

[0039] Further, in some embodiments, a fan air inlet 2111 is provided at the initial end of the airflow path of the air duct 211, and the plane of the fan air inlet 2111 faces the cabinet air inlet 11. The air duct 211 gradually converges along the airflow path, and the cross-section of the air duct 211 is a rectangle or a square, with the plane perpendicular to the airflow direction as the cross-section.

[0040] See also Figure 3 and Figure 4Specifically, in some embodiments, the air duct 211 includes a first side wall 2113, a second side wall 2114, and a first guide wall 2115 and a second guide wall 2116; wherein the first side wall 2113 and the second side wall 2114 are arranged opposite to each other, and the first guide wall 2115 and the second guide wall 2116 are arranged opposite to each other. The first side wall 2113 and the second side wall 2114 are arranged in parallel and spaced apart along the length direction of the cabinet air outlet 12, and the ends of the first side wall 2113 and the second side wall 2114 extend to the edge of the fan air outlet 2112. When multiple fan units 21 are connected in parallel, the first side wall 2113 of a fan unit 21 is connected to the second side wall 2114 of the adjacent fan 212. By arranging the first side wall 2113 and the second side wall 2114 in parallel, the force bearing area of ​​the two interactions is increased, which is conducive to increasing the stability of the fan assembly 20.

[0041] It is understandable that, in some embodiments, a buffer pad is provided on the first side wall 2113 and / or the second side wall 2114 to reduce the noise generated by the vibration of the fan assembly 20 when it is working. The buffer pad can be a silicone pad or a sound-absorbing gasket with a microporous structure, which is not limited here. In some other embodiments, the first side wall 2113 and the second side wall 2114 are provided with a matching fixed structure to facilitate loading and unloading. Preferably, the fixed structure is a detachable connection structure, such as a matching sliding connection structure, or a detachable snap-on structure, which is convenient for the inspection or replacement of a single fan unit 21 when a failure occurs, which will not be described in detail here.

[0042] Furthermore, the first guide wall 2115 and the second guide wall 2116 are arranged at intervals along the width direction of the cabinet air outlet 12, and their ends extend to the edge of the fan air outlet 2112 respectively; the first guide wall 2115 and the second guide wall 2116 gradually converge along the airflow path direction. Preferably, the first guide wall 2115 is a curved surface protruding toward the outside of the air duct 211. The second guide wall 2116 is a curved surface recessed toward the inside of the air duct 211, which is conducive to reducing wind resistance. In this embodiment, in order to facilitate production and assembly, the second guide wall 2116 is a sheet metal with a planar structure, which is conducive to production and cost saving.

[0043] Furthermore, in some embodiments, the fan 212 is a backward centrifugal fan, and its air inlet end is clamped at the fan air inlet 2111. In this arrangement, in some embodiments, a plurality of arc-shaped guide plates are arranged in the air duct 211, and these guide plates are arranged at the connection of the two side walls of the air duct 211, and the two ends of the guide plates are tangentially connected to the two intersecting side walls to prevent the airflow from directly blowing to the connection of the two side walls to generate vortices and cause the wind pressure to drop.

[0044] See also Figure 1Further, the air inlet of the cabinet 10 includes a fresh air inlet 112 and a return air inlet 111, and the fresh air inlet 112 and the return air inlet 111 can be respectively arranged on the top surface of the cabinet 10, or arranged on the side wall of the cabinet 10 near the top surface. It is understandable that a fresh air valve is arranged at the fresh air inlet 112 to control the amount of fresh air; the return air inlet 111 can be set to be normally open, or a return air valve can be set to control the amount of return air. In some embodiments, a detector is also arranged outside the cabinet 10 to test the carbon dioxide concentration in the room, and the opening of the fresh air valve is adjusted according to the concentration of carbon dioxide to adjust the amount of fresh air, which will not be described in detail here.

[0045] Furthermore, in some embodiments, the high-volume air cabinet is also provided with a filter assembly 30, which is fixedly mounted at the air inlet end of the cabinet 10 and arranged downstream of the fresh air inlet 112 and the return air inlet 111 along the airflow direction, for filtering and purifying the outdoor fresh air and the indoor return air. Specifically, in this embodiment, the filter assembly 30 includes a primary filter element 31 and a high-efficiency filter element 32, the primary filter element 31 is used to filter large particles of pollutants in the airflow, and the high-efficiency filter element 32 is used to filter small particles of pollutants such as PM2.5.

[0046] Preferably, in some embodiments, the primary filter element 31 is configured as a pleated structure, so that the contact area with the incoming air flow can be increased and the filtering efficiency can be improved. At the same time, the pleated structure can also increase the elasticity of the primary filter element 31. When the incoming air flow pressure acts on the surface of the primary filter element 31, it is easy to restore the elastic deformation, thereby preventing the primary filter element 31 from being damaged by the air flow pressure, and effectively improving the service life of the primary filter element 31. In this embodiment, the pleated structure can be a W-shaped redundant design, and the effective area after unfolding is 8-10 times that of a conventional filter element. The replacement cycle of the primary filter element 31 is extended by more than 5 times, effectively improving the stability of the operation of the wind cabinet.

[0047] Furthermore, the large air volume wind cabinet is also provided with a sterilization component 40, which is fixed inside the cabinet 10. The sterilization component 40 is arranged at a downstream position of the filter component 30 along the airflow direction, and is used to sterilize and disinfect the filtered airflow. Specifically, in the present embodiment, the sterilization component 40 is a high-pressure plasma purification and sterilization module, and the high-pressure plasma purification and sterilization module is provided with a plasma generator facing the high-efficiency filter element 32. The plasma generator generates plasma to sterilize the airflow filtered by the high-efficiency filter element 32, and can play a targeted purification effect on the microorganisms, bacteria and aerosol particles in the airflow. In some other embodiments, the sterilization component 40 can also be an ultraviolet sterilizer, or other devices or device combinations that can effectively kill bacteria and microorganisms in the air, which will not be described in detail here.

[0048] Furthermore, the high-volume air cabinet is also provided with a heat exchange and humidification component 50, which is arranged between the filter component 30 and the fan component 20, and is used to heat, cool and humidify the filtered fresh air and / or return air. The heat exchange and humidification component 50 includes a heat exchange module 51 and a humidification module 52, and the humidification module 52 is arranged between the heat exchange module 51 and the fan component 20, and is used to humidify the heating or cooling airflow.

[0049] Specifically, the heat exchange module 51 includes a cooler 511 and a drainage unit 512, the drainage unit 512 includes a water tank 5121 and a drainage pipe 5122, a drainage hole 15 is provided on the side wall of the cabinet 10, one end of the drainage pipe 5122 is connected to the bottom of the water tank 5121, and the other end is connected to the drainage hole 15. The water tank 5121 is arranged below the cooler 511, and is used to collect the condensed water on the surface of the cooler 511 and discharge it from the wind cabinet through the drainage pipe 5122. Specifically, a water trap is arranged in the middle of the drainage pipe 5122, which is used to block the drainage pipe 5122 to ensure the sealing of the cabinet 10.

[0050] Furthermore, in some embodiments, the cooler 511 is tilted to increase the heat exchange area with the airflow and improve the heat exchange efficiency. In addition, the cooler 511 is tilted to reduce the thickness of the wind cabinet while ensuring sufficient heat exchange area, so that the wind cabinet occupies a smaller space. In this arrangement, the water receiving trough 5121 is arranged below the lower end of the cooler 511, and the condensed water on the surface of the cooler 511 flows to the lower end due to gravity, and then falls into the water receiving trough 5121. It can be understood that each end of the cooler 511 is in contact with the side wall of the wind cabinet, so that all airflows need to pass through the cooler 511 for heat exchange.

[0051] Preferably, the angle between the surface cooler 511 and the horizontal plane is set to be between 65° and 75°, which can take into account the thickness of the wind cabinet and ensure the heat exchange efficiency of the surface cooler 511.

[0052] Specifically, the humidification module 52 includes a humidifier 521 and a humidification tube 522. The humidifier 521 is fixed to the side wall of the cabinet 10, and its exhaust end is connected to the humidification tube 522 through a conduit. The cabinet 10 is provided with a water inlet hole 16, and the water inlet end of the humidifier 521 is connected to the water inlet hole 16 through a water pipe for replenishing water to the humidifier 521. The drainage end of the humidifier 521 is connected to the drainage hole 15 through a water pipe for draining the water in the humidifier 521 to the outside of the cabinet 10.

[0053] Specifically, the humidifying tube 522 is arranged downstream of the surface cooler 511 along the air flow direction, and a plurality of exhaust holes are opened on the humidifying tube 522. The humidifier 521 generates steam, and the steam enters the humidifying tube 522 and is discharged through the plurality of exhaust holes to humidify the air flow that exchanges heat through the surface cooler 511, thereby achieving indoor humidification.

[0054] Furthermore, in some embodiments, the heat exchange and humidification assembly 50 further includes a reheater 53, which is fixedly disposed in the cabinet 10 through a bracket and disposed upstream of the fan assembly 20 along the airflow direction, for further heating the airflow. It is understandable that the reheater 53 is used to assist in heating the airflow inside the cabinet 10. For example, in extremely cold weather, the heating temperature of the heat exchanger cannot meet the user's requirements, and the reheater 53 can be used to further assist in heating the airflow.

[0055] It should be noted that the heat exchange module 51, the humidification module 52 and the reheater 53 can work individually or in combination according to the specific working mode. For example, when the indoor humidity is high, the heating mode is started, at which time the humidification module 52 does not work, the heat exchange module 51 works, or the heat exchange module 51 and the reheater 53 work at the same time, which will not be described in detail here.

[0056] As a preferred implementation, in this embodiment, the functional components in the cabinet 10 are arranged in sequence according to the airflow direction: filter component 30, sterilization component 40, heat exchange module 51, humidification module 52, reheater 53, and fan component 20, and finally discharged from the cabinet 10 through the fan outlet 2112. It should be noted that this arrangement order is only a preferred implementation of the technical solution of the present application, and does not constitute a limitation on the technical solution of the present application.

[0057] Furthermore, the cabinet 10 includes a cabinet body 13 for accommodating various functional components and at least one group of inspection doors 14. When the wind cabinet is in working state, the inspection door 14 and the cabinet body 13 are sealed and connected to avoid the reduction of air pressure and the influence of the air output of the wind cabinet. Specifically, the inspection door 14 is arranged on the side where the cabinet air outlet 12 is located. The inspection door 14 can be a double-leaf inspection door 14 connected to the cabinet body 13 by hinge rotation, or a push-pull inspection door 14 connected to the cabinet body 13 by sliding, which is not limited here. Preferably, multiple groups of inspection doors 14 can be arranged from top to bottom. When inspection is required, the corresponding inspection door 14 can be opened in a targeted manner; for the parts that do not need to be inspected, the inspection door 14 facing the cabinet body 13 is kept in a sealed connection with the cabinet body 13 to avoid multiple openings and closings affecting the stability of the wind cabinet.

[0058] Compared with the prior art, the beneficial effects of the embodiments of the present application are:

[0059] (1) The modular multi-fan unit parallel design is adopted to reduce the speed output of a single fan unit, significantly reduce noise, and facilitate maintenance;

[0060] (2) By using air duct guidance for a single fan unit, the mutual influence of the air output of adjacent fan units in the fan assembly is reduced, thereby improving the air output efficiency;

[0061] (3) The flow channel inside the entire wind cabinet adopts a unidirectional flow design, with small resistance loss along the way, no eddy current resonance, low unit operation noise, and the air outlet is set in a square shape and is set under the cabinet, which is suitable for floor air supply system;

[0062] (4) By placing the cooler at an angle, the thickness of the whole machine and the heat exchange efficiency of the cooler can be taken into consideration;

[0063] (5) By installing a reheater, the airflow can be supplemented with heat in extreme weather conditions.

[0064] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and the utility model is also intended to include these modifications and modifications.

Claims

1. A large air volume wind cabinet, characterized in that: include: A cabinet, wherein one end of the cabinet is provided with a cabinet air inlet; the other end of the cabinet is provided with a cabinet air outlet; A fan assembly is fixedly arranged inside the cabinet; the fan assembly includes a plurality of detachably connected fan units, each of which is provided with a fan and an air duct, and the fan is arranged at the initial end of the air flow path of the air duct; a fan outlet is opened at the end of the air flow path of the air duct, and a plurality of the fan outlets are arranged side by side at the cabinet outlet, so that the air flow directions of the plurality of fan outlets are parallel to each other.

2. A high air volume wind cabinet according to claim 1, characterized in that: The cabinet air outlet is arranged at the lower end of one side wall of the cabinet and is square in shape; the fan air outlet is embedded in parallel at the cabinet air outlet along the length direction of the cabinet air outlet; A fan air inlet is provided at the initial end of the air flow path of the air duct, and the fan air inlet is arranged toward the cabinet air inlet.

3. A high air volume wind cabinet according to claim 2, characterized in that: The fan card is arranged at the fan air inlet; the air duct gradually converges along the air flow path direction, and the cross-section of the air duct is a square or a rectangle with the plane perpendicular to the air flow direction as the cross-section.

4. A high air volume wind cabinet according to claim 1, characterized in that: Also includes: The filter assembly is fixedly arranged at the air inlet end of the cabinet; the filter assembly is provided with a primary filter element and a high-efficiency filter element, and the primary filter element is a pleated structure and is arranged between the high-efficiency filter element and the air inlet of the cabinet.

5. A high air volume wind cabinet according to claim 4, characterized in that: Also includes: The sterilization component is fixedly arranged in the cabinet; the sterilization component is arranged at the downstream position of the filter component along the air flow direction.

6. A high air volume wind cabinet according to claim 4, characterized in that: Also includes: The heat exchange and humidification component is fixedly arranged inside the cabinet and located between the filter component and the fan component; the heat exchange and humidification component includes a heat exchange module and a humidification module, and the humidification module is arranged between the heat exchange module and the fan component.

7. A high air volume wind cabinet according to claim 6, characterized in that: The heat exchange module includes a surface cooler and a drainage unit; the surface cooler is arranged obliquely relative to the horizontal plane; The side wall of the cabinet is provided with a drainage hole; The drainage unit includes a water receiving trough and a drainage pipe; the water receiving trough is arranged below the lower end of the surface cooler; one end of the drainage pipe is conductively connected to the water receiving trough, and the other end is connected to the drainage hole.

8. A high air volume wind cabinet according to claim 7, characterized in that: Each end of the surface cooler is respectively in contact with the side wall of the cabinet, and the angle between the surface cooler and the horizontal plane is 65°-75°.

9. A high air volume wind cabinet according to claim 8, characterized in that: The heat exchange and humidification component also includes a reheater, which is fixed in the cabinet and arranged at an upstream position of the fan component along the air flow direction.

10. A high air volume wind cabinet according to claim 1, characterized in that: The cabinet air inlet includes a fresh air inlet and a return air inlet; the fresh air inlet and / or the return air inlet are arranged on the top surface of the cabinet, or the fresh air inlet and / or the return air inlet are arranged on the side wall of the cabinet close to the top surface; a fresh air valve is arranged at the fresh air inlet.

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