Novel air cabinet

Abstract

The utility model relates to the technical field of air conditioning equipment, in particular to a novel air cabinet which comprises a shell, an air return channel, a heat exchange channel and an air supply channel are arranged in the shell, and the air return channel, the heat exchange channel and the air supply channel are sequentially arranged and communicated in the air flow direction; the air supply assembly is arranged in the air supply channel and is close to the air supply outlet of the air supply channel; the air supply assembly is directly communicated with the air supply outlet; a silencing assembly and a filtering assembly. According to the embodiment, the air supply assembly is directly communicated with the air supply outlet, functional modules in the middle are reduced, so that resistance is reduced, noise sources caused by the resistance are further reduced through the silencing assembly, and a user can enjoy a quiet and comfortable environment in the using process. Moreover, after the air supply assembly supplies air, the air speed is extremely non-uniform, and the uniformly distributed air speed is very high, so that the resistance between the air supply assembly and the air supply outlet is reduced as much as possible in order to reduce the air kinetic energy loss.

Description

TECHNICAL FIELD

[0001] The utility model relates to air conditioning equipment technical field, concretely relates to a new type air cabinet. BACKGROUND

[0002] With the development of air conditioning technology and the actual demand of people to living environment, air handling equipment and system are more and more widely used. The air supply fan is the core configuration in air handling equipment, determines the air supply pressure head and air volume of air handling equipment, running noise.

[0003] At present, the air handling air cabinet on the market is insufficient, in order to improve the air supply, the power of air supply fan needs to be improved. But when the power of air supply fan is high, the working noise is large. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the utility model provides a new type air cabinet to solve the problem of large working noise of air supply fan.

[0005] Firstly, the utility model provides a new type air cabinet, which comprises:

[0006] The shell is internally laid with return air channel, heat exchange channel and air supply channel, and the return air channel, the heat exchange channel and the air supply channel are sequentially arranged and communicated along the air flow direction.

[0007] The air supply assembly is arranged in the air supply channel and is arranged close to the air supply port of the air supply channel, and the air supply assembly is directly communicated with the air supply port.

[0008] The sound elimination assembly is arranged in the air supply channel, and the sound elimination assembly is located between the air supply assembly and the air supply port along the air flow direction.

[0009] The filter assembly is arranged in the return air channel, and the filter assembly comprises one or more filter units; in the case that the filter assembly comprises multiple filter units, the filter grade of multiple filter units gradually increases along the air flow direction.

[0010] Beneficial effects: The air supply assembly of the present embodiment is directly connected with the air supply port, reducing the functional modules in the middle part, thereby reducing part of the resistance, and further reducing the noise source caused by the remaining part of the resistance through the sound reduction assembly, so that the user can enjoy a more quiet and comfortable environment during use. Moreover, after the air supply assembly blows out air, the wind speed is extremely uneven, and the uniform wind speed is very high. Therefore, in order to reduce the loss of air kinetic energy, the resistance between the air supply assembly and the air supply port should be reduced as much as possible. At the same time, the air supply assembly is arranged close to the air supply port and directly connected, which simplifies the pipeline connection and reduces the leakage points and failure points. This compact design also facilitates installation and maintenance, improving the reliability and stability of the system. Further, by arranging multiple filter units in the return air passage and gradually increasing the filter level along the air flow direction, it can ensure that particulate matter and other pollutants in the air are gradually removed. Each filter unit can focus on removing particulate matter of a specific size range, thereby improving the overall filtration efficiency.

[0011] In an alternative embodiment, a first distance A is provided between the upstream end face of the air supply assembly and the downstream end face of the heat exchange passage along the air flow direction, an air supply fan is arranged in the air supply assembly, the diameter of the air supply fan is d, and the numerical relationship between the first distance and the diameter of the air supply fan is:

[0012] A≥0.8d.

[0013] In an alternative embodiment, a second distance B is provided between the downstream end face of the air supply assembly and the air supply port along the air flow direction, and the numerical relationship between the second distance and the diameter of the air supply fan is:

[0014] B≥1.2d.

[0015] Beneficial effects: The present embodiment reasonably sets the first distance and the second distance, which helps to avoid the generation of severe turbulence of airflow when entering the air supply assembly. By adjusting the relationship between A and d and the relationship between B and d, the airflow can be more smoothly transitioned to the air supply fan, thereby improving the airflow stability of the entire system. At the same time, appropriate first distance and second distance can ensure that the air supply fan has enough space to expand the pressure when inhaling air, thereby increasing the effective air supply area, so that the fan can more efficiently blow out air. This not only increases the air supply volume, but also reduces energy loss. Moreover, if the first distance A is too small, resonance may occur between the air supply fan and the heat exchange passage, and if the second distance B is too small, resonance may occur between the air supply fan and the air supply port, producing additional noise. Therefore, by reasonably setting the relationship between A and d and the relationship between B and d, this resonance phenomenon can be effectively avoided, making the system run more quietly.

[0016] In an alternative embodiment, the minimum distance between the blower and the air supply channel in the direction perpendicular to the air flow is C, and the numerical relationship between the minimum distance and the diameter of the air wheel is:

[0017] C≥1.2d.

[0018] Beneficial effects: This embodiment reasonably sets the distance C to avoid direct contact or close proximity between the blower and the air supply channel wall, preventing mechanical damage caused by vibration, thermal expansion and contraction, etc. This prolongs the service life of the fan and the channel, and improves the overall reliability of the system. Moreover, the appropriate distance C provides sufficient heat dissipation space for the fan, which helps to dissipate heat and prevent overheating problems. Good heat dissipation not only protects the fan itself, but also indirectly improves the stability and performance of the entire system. At the same time, the appropriate distance C provides sufficient space for the installation, removal and cleaning of the blower, facilitating the maintenance work in the later stage and reducing the maintenance cost.

[0019] In an alternative embodiment, the housing is provided with a cabinet door corresponding to the air supply assembly. When the cabinet door is closed, the cabinet door and the air supply channel jointly form a closed air supply cavity. When the cabinet door is opened, the air supply assembly located in the air supply channel is exposed.

[0020] Beneficial effects: This embodiment sets a cabinet door corresponding to the air supply assembly, making it easy to inspect and maintain the air cabinet. When needed, the cabinet door can be easily opened for cleaning and repair, reducing maintenance time and cost. Moreover, it makes maintenance more convenient and allows independent replacement or repair, prolonging the service life of the equipment.

[0021] In an alternative embodiment, the air supply assembly comprises:

[0022] A fixed plate is provided in the air supply channel. The plane of the fixed plate is perpendicular to the direction of the air flow.

[0023] A blower is installed on the fixed plate.

[0024] A ventilation port is provided on the fixed plate. The ventilation port is provided corresponding to the blower.

[0025] In an alternative embodiment, the air supply assembly further comprises:

[0026] A sealing member is provided on the side of the fixed plate close to the cabinet door. When the cabinet door is closed, the inner side of the cabinet door is in contact with the sealing member.

[0027] Beneficial effects: the sealing strip is arranged on the side of the fixed plate close to the cabinet door, and tightly abuts against the inner wall edge of the cabinet door when the cabinet door is buckled, so that the positive and negative pressure zones are effectively prevented from air mixing and air leakage. This not only improves the sealing performance of the equipment, but also reduces energy loss and improves energy efficiency. At the same time, the good sealing performance can prevent external dust and pollutants from entering the inside of the air cabinet, keep the inside clean, and prolong the service life of the equipment.

[0028] In an alternative embodiment, the air supply assembly further comprises:

[0029] A fan support is arranged on the downstream side of the fixed plate along the air flow direction, and the fan support and the fixed plate form a mounting frame for fixing the air supply fan, and the air supply fan is arranged in the mounting frame.

[0030] In an alternative embodiment, the fan support is provided with a plurality of legs adapted to be mounted to the fixed plate, and the legs are provided with damping members close to one side of the fixed plate.

[0031] Beneficial effects: the plurality of legs can disperse the weight of the air supply fan and the vibration generated during operation, making the entire equipment more stable and reducing the risk of shaking and displacement. Moreover, the damping members can effectively absorb and isolate the vibration generated during the operation of the fan, preventing the vibration from being transmitted to the fixed plate and other structural components, thereby significantly reducing noise. At the same time, by reducing the impact of vibration on the equipment, the fan and its mounting structure can be effectively protected, prolonging their service life. Further, the damping members are usually made of soft materials such as rubber or silicone, which can form a buffer layer between the legs and the fixed plate to prevent wear caused by direct contact.

[0032] In an alternative embodiment, the air supply assembly further comprises:

[0033] A reinforcing rib is arranged on the fixed plate and / or the fan support. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the specific embodiments or related technologies of the present application, the following will briefly introduce the drawings needed to be used in the specific embodiments or related technology description. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0035] Figure 1 The structural schematic diagram of the new air cabinet in the embodiments of the present application;

[0036] Figure 2It is the internal structure schematic view of the air supply channel of the new type air cabinet in the embodiment of the utility model;

[0037] Figure 3 For Figure 2 The local enlarged schematic view of the air supply assembly in the embodiment of the utility model;

[0038] Figure 4 It is the explosion schematic view of the air supply assembly in the embodiment of the utility model;

[0039] Figure 5 It is the parameter marking schematic view of the new type air cabinet in the embodiment of the utility model;

[0040] Figure 6 For Figure 5 The sectional view of E-E direction in the embodiment of the utility model.

[0041] Mark explanation:

[0042] 1, shell;11, return air channel;12, heat exchange channel;13, air supply channel;14, air supply port;15, cabinet door;

[0043] 2, air supply assembly;21, fixed plate;22, air blower;23, air vent;24, sealing element;25, fan support;26, damping element;27, air guide ring;

[0044] 3, sound reduction assembly;4, filter assembly. Specific implementation

[0045] In order to make the purpose, technical scheme and advantage of the embodiment of the utility model more clear, the technical scheme in the embodiment of the utility model will be described clearly and completely below, it is obvious that the described embodiment is a part of the embodiment of the utility model, rather than all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the protection scope of the utility model.

[0046] In the description of the utility model, it needs to be explained that the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relation shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as the limitation of the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0047] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the terms "mount", "link", "connect" should be understood in broad sense, for example, it can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirect connection through intermediate medium, also can be the intercommunication of two elements, can be wireless connection, also can be wired connection. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0048] In addition, the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as there is no conflict.

[0049] With the development of air conditioning technology and the actual demand of people on living environment, air handling equipment and system are more and more widely used. The air supply fan 22 is the core configuration in the air handling equipment, determines the air supply pressure head and air volume of the air handling equipment, running noise. The air supply volume of the air handling cabinet on the market is insufficient at present, in order to improve the air supply volume, the power of the air supply fan 22 needs to be improved. However, when the power of the air supply fan 22 is high, the working noise is large.

[0050] Therefore, the utility model provides a new type of air cabinet to solve the problem of large working noise of the air supply fan 22.

[0051] The embodiments of the utility model are described below in combination with Figures 1 to 6

[0052] According to the embodiments of the utility model, on the one hand, a new type of air cabinet is provided, which comprises a shell 1 and an air supply assembly 2.

[0053] Specifically, in the present embodiment, the shell 1 is internally arranged with a return air passage 11, a heat exchange passage 12 and an air supply passage 13, which are sequentially arranged and communicated along the air flow direction. Further, the air supply assembly 2 is arranged in the air supply passage 13 and close to the air supply port 14 of the air supply passage 13, and the air supply assembly 2 is directly communicated with the air supply port 14. That is, no other functional modules are arranged between the air supply assembly 2 and the air supply port 14, and the air supply assembly 2 directly blows air from the air supply port 14, reducing the obstruction of the air flow by other functional modules.

[0054] Further, in the present embodiment, the sound attenuation assembly 3 is arranged in the air supply passage 13. And along the air flow direction, the sound attenuation assembly 3 is located between the air supply assembly 2 and the air supply port 14. The sound attenuation assembly 3 can reduce the noise of the air flow near the air supply port 14.

[0055] ​Furthermore, in this embodiment, the filter assembly 4 is disposed in the return air duct 11, and the filter assembly 4 includes one or more filter units. When the filter assembly 4 includes multiple filter units, the filtration levels of the multiple filter units gradually increase along the airflow direction. The filter units can be pre-filters, high-efficiency filters, and sterilizers, etc. The filter assembly 4 can be arranged sequentially from the outside to the inside along the airflow direction, including pre-filters, high-efficiency filters, and sterilizers. The sterilizer can be a high-temperature sterilization heating element, an ultraviolet lamp, or an ionization sterilization element, etc. Of course, this embodiment is merely an example illustrating the specific structure of the filter assembly 4, and does not limit it. Those skilled in the art can make changes according to actual conditions, as long as the same technical effect is achieved.

[0056] In this configuration, the air supply component 2 is directly connected to the air outlet 14, reducing the number of intermediate functional modules and thus lowering resistance. Furthermore, the noise source from the remaining resistance is reduced by the silencer component 3, allowing users to enjoy a quieter and more comfortable environment. Since the air velocity after the air supply component 2 is highly uneven, with a very high uniform velocity, resistance between the air supply component 2 and the air outlet 14 should be minimized to reduce air kinetic energy loss. Simultaneously, the air supply component 2's proximity to and direct connection with the air outlet 14 simplifies pipe connections and reduces leakage and failure points. This compact design also facilitates installation and maintenance, improving system reliability and stability. Furthermore, the proximity of the air supply component 2 to the air outlet 14 shortens the distance air travels from the heat exchange area to the final delivery point into the room, resulting in faster temperature adjustment and allowing users to perceive temperature changes more quickly. Moreover, this embodiment, by incorporating multiple filter units in the return air duct 11 and gradually increasing the filtration level along the airflow direction, ensures that particulate matter and other pollutants in the air are gradually removed. Each filter unit can focus on removing particles of a specific size range, thereby improving overall filtration efficiency.

[0057] Furthermore, in an alternative implementation, such as Figure 5 As shown, along the airflow direction, a first distance A is provided between the upstream end face of the air supply assembly 2 and the downstream end face of the heat exchange channel 12. The air supply assembly 2 is equipped with a blower 22, and the impeller diameter of the blower 22 is d. The numerical relationship between the first distance and the impeller diameter is as follows:

[0058] A≥0.8d.

[0059] Furthermore, in an alternative implementation, such as Figure 5As shown, along the direction of the air flow, a second distance B is provided between the downstream end face of the air supply assembly 2 and the air supply port 14, and the numerical relationship between the second distance and the diameter of the air wheel is:

[0060] B≥1.2d.

[0061] In this way, the reasonable setting of the first distance and the second distance in this embodiment helps to avoid the generation of severe turbulence of the air flow when entering the air supply assembly 2. By adjusting the relationship between A and d and the relationship between B and d, the air flow can be more smoothly transitioned to the air blower 22, thereby improving the air flow stability of the entire system. At the same time, the appropriate first distance and the second distance can ensure that the air blower 22 has enough space to expand the pressure when inhaling air, thereby increasing the effective air supply area, so that the fan can more efficiently send out air. This not only improves the air supply amount, but also reduces energy loss. Moreover, if the first distance A is too small, resonance may occur between the air blower 22 and the heat exchange channel 12, and if the second distance B is too small, resonance may occur between the air blower 22 and the air supply port 14, which produces additional noise. Therefore, by reasonably setting the relationship between A and d and the relationship between B and d, the resonance phenomenon can be effectively avoided, and the system runs more quietly.

[0062] Further, in an alternative embodiment, as shown in Figure 6 along the direction perpendicular to the air flow, the minimum distance between the air blower 22 and the air supply channel 13 is C, and the numerical relationship between the minimum distance and the diameter of the air wheel is:

[0063] C≥1.2d.

[0064] In this way, the reasonable setting of the distance C in this embodiment can avoid the direct contact or too close contact between the air blower 22 and the wall surface of the air supply channel 13, preventing mechanical damage caused by vibration, thermal expansion and contraction, etc. This prolongs the service life of the fan and the channel, and improves the overall reliability of the system. Moreover, the appropriate distance C provides sufficient heat dissipation space for the fan, which helps to dissipate heat and prevent overheating problems. Good heat dissipation effect not only protects the fan itself, but also indirectly improves the stability and performance of the entire system. At the same time, the appropriate distance C provides sufficient space for the installation, disassembly and cleaning of the air blower 22, facilitating the later maintenance work and reducing the maintenance cost.

[0065] Further, in an alternative embodiment, the shell 1 is provided with a cabinet door 15 at a position corresponding to the air supply assembly 2. When the cabinet door 15 is closed, the cabinet door 15 and the air supply channel 13 together enclose a closed air supply cavity. When the cabinet door 15 is opened, the air supply assembly 2 located in the air supply channel 13 is exposed.

[0066] Of course, the installation mode of the cabinet door 15 can be rotatably connected with the shell 1 through a rotating shaft, or can be hingedly connected with the shell 1. The embodiment only exemplarily illustrates the installation mode of the cabinet door 15, but is not limited thereto, and those skilled in the art can change it according to actual conditions, as long as the same technical effects can be achieved.

[0067] In this way, the cabinet door 15 is arranged corresponding to the air supply assembly 2 in the embodiment, so that the inside of the air cabinet is easy to check and maintain. When necessary, the cabinet door 15 can be easily opened for cleaning and maintenance, reducing maintenance time and cost. Moreover, the maintenance is more convenient, and the air cabinet can be independently replaced or repaired, prolonging the service life of the equipment.

[0068] Further, in an alternative embodiment, the air supply assembly 2 comprises a fixed plate 21, an air supply fan 22, and an air vent 23.

[0069] Specifically, in the embodiment, the fixed plate 21 is arranged in the air supply channel 13, and the plane on which the fixed plate 21 is arranged is perpendicular to the air flow direction. The air supply fan 22 is mounted on the fixed plate 21, and the air vent 23 is arranged on the fixed plate 21, corresponding to the air supply fan 22.

[0070] As for the relative position of the fixed plate 21 and the air supply fan 22, the fixed plate 21 can be arranged close to one side of the heat exchange channel 12, and the air supply fan 22 is arranged close to the air supply port 14. Alternatively, the fixed plate 21 can be arranged close to the air supply port 14, and the air supply fan 22 is arranged close to the heat exchange channel 12.

[0071] Of course, the embodiment only exemplarily illustrates the relative position of the fixed plate 21 and the air supply fan 22, but is not limited thereto, and those skilled in the art can change it according to actual conditions, as long as the same technical effects can be achieved.

[0072] Further, in an alternative embodiment, the air supply assembly 2 further comprises a sealing member 24 arranged on the side of the fixed plate 21 close to the cabinet door 15. When the cabinet door 15 is closed, the inner side of the cabinet door 15 is in contact with the sealing member 24.

[0073] In this way, the sealing strip is arranged on the side of the fixed plate 21 close to the cabinet door 15 in the embodiment, and when the cabinet door 15 is buckled, the sealing strip is in close contact with the inner wall edge of the cabinet door 15, which can effectively prevent air from leaking between the positive and negative pressure areas, and prevent air leakage. This not only improves the sealing performance of the equipment, but also reduces energy loss and improves energy efficiency. At the same time, good sealing performance can prevent dust and pollutants from the outside from entering the inside of the air cabinet, keeping the inside clean and prolonging the service life of the equipment.

[0074] Further, in an alternative embodiment, the air supply assembly 2 further comprises a fan support 25, which is arranged on the downstream side of the fixed plate 21 along the air flow direction. The fan support 25 and the fixed plate 21 form an installation frame for fixing the air supply fan 22, and the air supply fan 22 is arranged in the installation frame.

[0075] Further, a wind guide ring 27 can be arranged on the side of the fixed plate 21 close to the heat exchange channel 12, one end of the wind guide ring 27 is inserted into the air vent 23, and the other end of the wind guide ring 27 is in communication with the air supply fan 22. Further, the fan support 25 and the fixed plate 21 can be made of metal material, and the sheet metal thickness is greater than 1.5 mm, and all are sheet metal flanging structures to ensure overall strength and rigidity.

[0076] Further, the fan support 25 and the fixed plate 21 can be fixedly connected or detachably connected. For fixed connection, welding, bonding and the like can be used. For detachable connection, screw holes can be used for fixing, buckles and slots can be used for fixing, and magnetic sheets can be used for fixing.

[0077] The detachable connection mode is described below. For example, one or more fixed plates 21 can be additionally arranged on both sides of the fixed plate 21, and a person skilled in the art can change the number of fixed plates 21 according to actual conditions, such as 1, 2, 3, 4, etc. Screw holes are formed on the fixed plate 21, and another screw hole is formed on the fan support 25 corresponding to the screw hole. Then, the screw is sequentially inserted through the screw hole on the fixed plate 21 and the screw hole on the fan support 25, so as to connect the fixed plate 21 and the fan support 25. Further, when buckles and slots are used for fixing, buckles can be additionally arranged on the fixed plate 21, and a person skilled in the art can change the number of buckles according to actual conditions, such as 1, 2, 3, 4, etc. A slot capable of cooperating with the buckle is formed on the fan support 25 corresponding to the position of the buckle. Then, the buckle on the fixed plate 21 is directly inserted into the slot on the fan support 25, so as to connect the fixed plate 21 and the fan support 25. When magnetic attraction is used for fixing, magnetic sheets can be additionally arranged on the fixed plate 21, and a person skilled in the art can change the number of magnetic sheets according to actual conditions, such as 1, 2, 3, 4, etc. A magnetic sheet capable of attracting the magnetic sheet is formed on the fan support 25 corresponding to the position of the magnetic sheet. Then, the magnetic sheet on the fixed plate 21 is directly inserted into the magnetic sheet on the fan support 25, so as to magnetically connect the fixed plate 21 and the fan support 25.

[0078] Of course, the embodiment only illustrates the fixed connection mode and the detachable connection mode, but is not limited thereto, and those skilled in the art can make changes according to actual conditions, as long as the same technical effects can be achieved.

[0079] Further, in an optional embodiment, the fan support 25 is provided with a plurality of legs, which are suitable for being mounted to the fixed plate 21, and the legs are provided with damping members 26 close to one side of the fixed plate 21.

[0080] Of course, the legs and the fixed plate 21 can be fixed by bolts and screw holes, and a non-slip washer and a fixing nut can be used at the bottom of the bolt, or other ways can be used for fixation. When the fixed plate 21 needs to pass through a wire, a wire passing hole can be directly formed on the fixed plate 21, and a sealing sleeve is arranged in the wire passing hole, so as to ensure the sealing property and prevent the wire from being cut.

[0081] In this way, the plurality of legs of the embodiment can disperse the weight of the air blower 22 and the vibration generated during operation, so that the whole device is more stable, and the risk of shaking and displacement is reduced. Moreover, the damping members 26 can effectively absorb and isolate the vibration generated during the operation of the fan, preventing the vibration from being transmitted to the fixed plate 21 and other structural components, thereby significantly reducing the noise. At the same time, by reducing the influence of vibration on the device, the fan and its installation structure can be effectively protected, and the service life thereof can be prolonged. Further, the damping members 26 are usually made of soft materials such as rubber or silicone, which can form a buffer layer between the legs and the fixed plate 21, preventing wear caused by direct contact.

[0082] Further, in an optional embodiment, the air supply assembly 2 further comprises a reinforcing rib arranged on the fixed plate 21 and the fan support 25. Of course, the reinforcing rib can also be arranged on only one of the fixed plate 21 and the fan support 25, and the embodiment only illustrates the same.

[0083] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. A new type of air cabinet, characterized in that, The application relates to a heat exchange air conditioner, which comprises the following parts: a shell (1) internally arranged with a return air passage (11), a heat exchange passage (12) and a supply air passage (13), which are sequentially arranged and communicated along the air flow direction; a supply air assembly (2) arranged in the supply air passage (13) and close to a supply air outlet (14) of the supply air passage (13); the supply air assembly (2) is directly communicated with the supply air outlet (14); a sound elimination assembly (3) arranged in the supply air passage (13); along the air flow direction, the sound elimination assembly (3) is located between the supply air assembly (2) and the supply air outlet (14); a filter assembly (4) arranged in the return air passage (11); the filter assembly (4) comprises one or more filter units; in the case that the filter assembly (4) comprises multiple filter units, the filter levels of the multiple filter units gradually increase along the air flow direction.

2. The new type of air cabinet according to claim 1, characterized in that, Along the air flow direction, a first distance A is arranged between the upstream end surface of the supply air assembly (2) and the downstream end surface of the heat exchange passage (12); a supply air fan (22) is arranged in the supply air assembly (2); the diameter of the air wheel of the supply air fan (22) is d; the numerical relationship between the first distance and the diameter of the air wheel is as follows: A >= 0.8d.

3. The new type of air cabinet according to claim 2, characterized in that, Along the air flow direction, a second distance B is arranged between the downstream end surface of the supply air assembly (2) and the supply air outlet (14); the numerical relationship between the second distance and the diameter of the air wheel is as follows: B >= 1.2d.

4. The new type of air cabinet according to claim 2, characterized in that, Along the direction perpendicular to the air flow, the minimum distance between the supply air fan (22) and the supply air passage (13) is C; the numerical relationship between the minimum distance and the diameter of the air wheel is as follows: C >= 1.2d.

5. The new type of air cabinet according to any one of claims 1 to 4, characterized in that The shell (1) is provided with a cabinet door (15) at the position corresponding to the supply air assembly (2); when the cabinet door (15) is closed, the cabinet door (15) and the supply air passage (13) jointly form a closed supply air cavity; when the cabinet door (15) is opened, the supply air assembly (2) arranged in the supply air passage (13) is exposed.

6. The new type of air cabinet according to claim 5, characterized in that, The supply air assembly (2) comprises the following parts: a fixed plate (21) arranged in the supply air passage (13); the plane of the fixed plate (21) is perpendicular to the air flow direction; a supply air fan (22) installed on the fixed plate (21); a ventilation opening (23) arranged on the fixed plate (21); the ventilation opening (23) is arranged in correspondence with the supply air fan (22).

7. The new type of air cabinet according to claim 6, characterized in that The supply air assembly (2) further comprises the following parts: a sealing piece (24) arranged on the side of the fixed plate (21) close to the cabinet door (15); when the cabinet door (15) is closed, the inner side surface of the cabinet door (15) is attached to the sealing piece (24).

8. The new type of air cabinet according to claim 6 or 7, characterized in that The supply air assembly (2) further comprises the following parts: A fan support (25) is arranged on the downstream side of the fixed plate (21) along the air flow direction; and the fan support (25) and the fixed plate (21) enclose an installation frame for fixing the air supply fan (22); the air supply fan (22) is arranged in the installation frame.

9. The new type of air cabinet according to claim 8, characterized in that, The fan support (25) is provided with a plurality of legs adapted to be mounted to the fixed plate (21); and the legs are provided with shock absorbers (26) close to one side of the fixed plate (21).

10. The new type of air cabinet according to claim 9, characterized in that, The air supply assembly (2) further comprises: Reinforcing ribs are arranged on the fixed plate (21) and / or the fan support (25).

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