Fan assembly and fresh air equipment

Abstract

The utility model relates to the technical field of air conditioning, and provides a fan assembly and fresh air equipment. The fan assembly comprises a mounting plate, a machine shell and a wind wheel. Ventilation openings penetrating through the two sides of the mounting plate in the thickness direction are formed in the mounting plate; the machine shell is arranged on the first side of the mounting plate in the thickness direction, airflow inlets are formed in the two sides of the machine shell in the thickness direction, and the ventilation openings communicate with the airflow inlets. The wind wheel is located in the machine shell. According to the fan assembly and the fresh air equipment, airflow can enter the machine shell from the airflow inlets in the two sides of the machine shell in the thickness direction, and double-face air inlet is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning, and in particular to a fan assembly and a fresh air device. Background Art

[0002] This section is intended to provide a background or context for the embodiments of the present application. No description herein is admitted to be prior art by virtue of its inclusion in this section.

[0003] In the related art, fresh air equipment is used to replace indoor air, thereby improving the indoor environment. The fresh air equipment includes a fan assembly, in which the casing of the fan assembly usually has only one air inlet, and the single-sided air intake of the casing leads to poor air intake effect and low wind wheel operation efficiency. Utility Model Content

[0004] In view of this, the present application hopes to provide a fan assembly and fresh air equipment capable of double-sided air intake.

[0005] To achieve the above-mentioned purpose, an embodiment of the present application provides a fan assembly, which includes a mounting plate, a housing, and a wind wheel. The mounting plate is formed with a vent that passes through both sides of the mounting plate in the thickness direction; the housing is arranged on a first side of the mounting plate in the thickness direction, and both sides of the housing in the thickness direction are formed with airflow inlets, and the vent is connected to the airflow inlet; the wind wheel is located in the housing.

[0006] In some embodiments, the mounting plate includes a connecting portion and a plate body formed with the vent, the housing is disposed on a first side of the plate body along a thickness direction, and the connecting portion is disposed on a second side of the plate body along the thickness direction.

[0007] In some embodiments, the connecting portion includes a connecting piece, the connecting piece extends from the plate body toward the second side, and the connecting piece is formed with a connecting hole.

[0008] In some embodiments, the connecting parts are provided on two opposite sides of the plate body perpendicular to the thickness direction.

[0009] In some embodiments, the fan assembly includes a drive motor, and the drive motor is disposed on the mounting plate.

[0010] In some embodiments, the mounting plate is formed with a positioning groove, and at least a portion of the drive motor is located in the positioning groove.

[0011] In some embodiments, the fan assembly includes a pressure cover, which is disposed on a first side of the mounting plate to jointly define a limiting cavity, and the drive motor is accommodated in the limiting cavity.

[0012] In some embodiments, the vent is located on the periphery of the drive motor.

[0013] In some embodiments, the fan assembly includes a conductive wire connected to the drive motor, the drive motor is disposed on a first side of the mounting plate, the mounting plate is formed with a wire accommodating groove, and at least a portion of the conductive wire is located in the wire accommodating groove.

[0014] In some embodiments, the mounting plate is formed with air vents penetrating through both sides of the mounting plate along the thickness direction, and the air vents are located at the periphery of the vent.

[0015] An embodiment of the present application also provides a fresh air device, which includes a shell, a heat exchange core and a fan assembly as described above, which is located in the shell, and the mounting plate is connected to the shell.

[0016] The fan assembly provided in the embodiment of the present application has a vent on the mounting plate, and the vent is connected to the airflow inlet, so that the mounting plate does not block the airflow inlet, and the airflow can enter the casing from the airflow inlets on both sides of the casing along the thickness direction, achieving double-sided air intake, which has a better effect than single-sided air intake, can reduce the rotation speed and thus achieve the effect of noise reduction and vibration reduction. The fresh air device provided in the embodiment of the present application has the same beneficial effects as the above-mentioned fan assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a fan assembly in some embodiments of the present application;

[0018] Figure 2 This is a schematic diagram of the structure of the mounting plate in some embodiments of the present application;

[0019] Figure 3 A schematic diagram of a partial structure of a fan assembly in some embodiments of the present application;

[0020] Figure 4 This is a schematic diagram of the structure of the fresh air equipment in some embodiments of the present application.

[0021] Description of Reference Numerals

[0022] 100. Fan assembly; 101. Exhaust fan; 102. Fresh air fan;

[0023] 10. Mounting plate; 10a. Positioning groove; 10b. Wire trough; 10c. Air outlet; 11. Connecting portion; 111. Connecting piece; 111a. Connecting hole; 12. Plate body; 12a. Air outlet; 12b. Mounting hole;

[0024] 20. housing; 20a. air flow inlet;

[0025] 30, wind wheel; 13, gland; 13a, positioning hole; 13b, weight-reducing hole; 14, supporting part;

[0026] 40. Driving motor;

[0027] 200, fresh air equipment; 210, outer shell; 210b, fan chamber; 210b1, air supply chamber; 210b2, exhaust chamber; 220, heat exchange core; 211, first side wall; 211a, return air outlet; 211b, air supply outlet; 212, second side wall; 212a, fresh air outlet; 212b, exhaust outlet. DETAILED DESCRIPTION

[0028] In the absence of conflict, the embodiments and technical features in the embodiments of the present application may be combined with each other, and the detailed descriptions in the specific implementation methods should be understood as explanations of the purpose of the present application and should not be regarded as improper limitations on the present application.

[0029] It should be noted that in the embodiments of the present application, the orientations or positional relationships such as "upper", "lower", "first side", "second side", "first direction", "thickness direction" are based on the orientations or positional relationships shown in the drawings. It should be understood that these orientation terms are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The present application will be further described in detail below in conjunction with the drawings and specific embodiments.

[0030] It should be noted that in this application, the thickness direction refers to the thickness direction of the mounting plate. If there are special instructions, the special instructions shall prevail.

[0031] In the related art, the casing can only take in air on one side, resulting in poor air intake effect and low wind wheel operation efficiency.

[0032] In view of this, please refer to Figure 1-Figure 3 The embodiment of the present application provides a fan assembly 100, which is used in a fresh air device 200 and can achieve double-sided air intake.

[0033] The fresh air device 200 is an effective air purification device that can circulate indoor air. On the one hand, it discharges the indoor polluted air to the outside, and on the other hand, it inputs the outdoor fresh air into the room to adjust the indoor air quality.

[0034] The fan assembly 100 includes a mounting plate 10, a housing 20 and a wind wheel 30. The mounting plate 10 is formed with ventilation holes 12a penetrating both sides of the mounting plate 10 in the thickness direction; the housing 20 is disposed on a first side of the mounting plate 10 in the thickness direction, and both sides of the housing 20 in the thickness direction are formed with airflow inlets 20a, and the ventilation holes 12a are connected to the airflow inlets 20a; the wind wheel 30 is located in the housing 20.

[0035] The wind wheel 30 rotates to drive the airflow. The housing 20 plays a role of guiding the airflow. The vents 12a penetrate through two side surfaces of the mounting plate 10 along the thickness direction so that the airflow can flow through the vents 12a.

[0036] Exemplarily, the wind wheel 30 rotates to drive part of the airflow into the housing 20 through the vent 12 a and an airflow inlet 20 a close to the mounting plate 10 , and part of the airflow can enter the housing 20 through another airflow inlet 20 a away from the mounting plate 10 .

[0037] The fan assembly 100 provided in the embodiment of the present application has a mounting plate 10 with a vent 12a, and the vent 12a is connected to the air flow inlet 20a. In this way, the mounting plate 10 will not block the air flow from the air flow inlet 20a, and the air flow can enter the casing 20 from the air flow inlets 20a on both sides of the casing 20 along the thickness direction, thereby realizing double-sided air intake, which has a better effect than single-sided air intake and can reduce the rotation speed to achieve the effect of noise reduction and vibration reduction.

[0038] For some examples, see Figure 1 and Figure 2 The mounting plate 10 includes a connecting portion 11 and a plate body 12 formed with a vent 12a, the housing 20 is arranged on a first side of the plate body 12 in the thickness direction, and the connecting portion 11 is arranged on a second side of the plate body 12 in the thickness direction. The plate body 12 is used to carry the wind wheel 30 and the housing 20, and the airflow on the second side of the plate body 12 can pass through the vent 12a to the airflow inlet 20a. The connecting portion 11 is used to cooperate with a fastener to fix the fan assembly 100 to the product, for example, the connecting portion 11 is used to fix the fan assembly 100 on the fresh air device 200.

[0039] Understandably, Figure 1 , Figure 2 as well as Figure 3 Z in the figure represents the thickness direction of the plate 12. Figure 4 In the figure, X represents the first direction, and Y represents the second direction.

[0040] Exemplarily, the fresh air device 200 includes a housing 210 , and the connecting portion 11 cooperates with a fastener to fix the fan assembly 100 to the housing 210 .

[0041] It should be noted that the first side and the second side of the mounting plate 10 are two opposite sides of the mounting plate 10 along the thickness direction.

[0042] The type of fastener is not limited. For example, the fastener includes but is not limited to screws or bolts.

[0043] For some examples, see Figure 2The connecting portion 11 includes a connecting piece 111, which extends from the plate body 12 toward the second side. The connecting piece 111 is formed with a connecting hole 111a. The connecting hole 111a is used to cooperate with a fastener. The connecting piece 111 has a simple structure, is easy to manufacture, and has a low cost.

[0044] Exemplarily, a fixing hole is provided at a position of the housing 210 of the fresh air device 200 corresponding to the connection hole 111 a , and a bolt is passed through the connection hole 111 a and the fixing hole and is screwed with a nut to fix the fan assembly 100 to the housing 210 .

[0045] In some embodiments, the plate body 12 is provided with connecting parts 11 on both sides of the plate body 12 perpendicular to the thickness direction. Providing connecting parts 11 on both sides of the plate body 12 can improve the fixing effect of the fan assembly 100 and improve the stability of the installation.

[0046] In some embodiments, the mounting plate 10 includes a support portion 14 and a plate body 12 formed with a vent 12a, the housing 20 is disposed on a first side of the plate body 12 along the thickness direction, and the support portion 14 is disposed on a second side of the plate body 12 along the thickness direction. The support portion 14 can abut against the housing 210 of the fresh air device 200, and the support portion 14 forms a gap between the side wall of the housing 210 and the plate body 12, so that airflow enters the vent 12a from the gap. The support portion 14 can further improve the fixing effect of the fan assembly 100.

[0047] In the related art, the casing is installed on the casing mounting plate, the motor is installed on the motor mounting plate, and the motor mounting plate is fixed on the casing mounting plate; the corresponding components for installing the motor and the casing are complicated to assemble, and the cumulative tolerance of the components is large due to part deviation and assembly deviation; the installation of the casing and the whole machine requires additional components, there are many components and they occupy a large space of the whole machine.

[0048] In view of this, in some embodiments, please refer to Figure 3 The fan assembly 100 includes a drive motor 40, which is disposed on the mounting plate 10. The drive motor 40 is connected to the wind wheel 30 to drive the wind wheel 30 to rotate. In this embodiment, the wind wheel 30 and the motor are both mounted on the same mounting plate 10, which can simplify the installation of components and the installation process and improve the assembly accuracy.

[0049] For some examples, see Figure 2 The mounting plate 10 is formed with a positioning groove 10a, and at least a portion of the drive motor 40 is located in the positioning groove 10a. Exemplarily, the positioning groove 10a can be formed in the plate body 12. The positioning groove 10a is used to position and install the drive motor 40, provides positioning and limiting functions, can simplify the parts required for installing the drive motor 40, reduce the assembly space occupied by installing the drive motor 40, and reduce the possibility of assembly deviation.

[0050] The formation method of the positioning groove 10a is not limited. In some embodiments, the surface of the mounting plate 10 facing the first side is partially missing to form the positioning groove 10a. In other words, a local portion of the mounting plate 10 is thinned to form the positioning groove 10a. In other embodiments, a local portion of the mounting plate 10 protrudes toward the second side to form the positioning groove 10a. In this way, the thickness of the location of the positioning groove 10a can be maintained without reducing the structural strength of the mounting plate 10.

[0051] For some examples, see Figure 3 The fan assembly 100 includes a gland 13, which is disposed on a first side of the mounting plate 10 to define a limiting cavity, and the drive motor 40 is accommodated in the limiting cavity. The mounting plate 10 and the gland 13 can clamp the drive motor 40, and the gland 13 is disposed on the mounting plate 10, which can improve the fixing effect of the drive motor 40.

[0052] For example, see Figure 2 and Figure 3 The pressure cover 13 is provided with a positioning hole 13a, and the plate body 12 is correspondingly provided with a mounting hole 12b. Fasteners are passed through the positioning hole 13a and the mounting hole 12b to fix the pressure cover 13 to the plate body 12, thereby fixing the drive motor 40 to the plate body 12.

[0053] For example, see Figure 3 The pressure cover 13 is provided with a weight-reducing hole 13b. The weight-reducing hole 13b can reduce the material used for the pressure cover 13, reduce the weight of the pressure cover 13, and facilitate the heat dissipation of the driving motor 40.

[0054] For some examples, see Figure 3 The vent 12a is located at the periphery of the drive motor 40. This design prevents the drive motor 40 from blocking the vent 12a, so that the airflow on the second side of the mounting plate 10 can enter the housing 20 through the vent 12a, and the vent 12a can smoothly achieve the ventilation function.

[0055] For example, see Figure 3 There are three vents 12a, which are spaced apart along the periphery of the driving motor 40 so that the airflow enters the housing 20 evenly, thereby improving the ventilation effect.

[0056] In the related art, the wiring of the fan assembly 100 needs to be perforated in the mounting plate 10 of the casing 20 for threading. There is a risk of the wiring being cut by the perforated mounting plate 10, and the threading operation during assembly is time-consuming and cumbersome.

[0057] In view of this, in some embodiments, please refer to Figure 2The fan assembly 100 includes a conductive wire connected to a drive motor 40, the drive motor 40 is disposed on a first side of a mounting plate 10, and the mounting plate 10 is formed with a wire accommodating groove 10b, at least part of the conductive wire is located in the wire accommodating groove 10b.

[0058] The conductive wire is used to energize the drive motor 40 . The wire groove 10 b eliminates the need for the conductive wire to pass through the mounting plate 10 . The conductive wire can be guided to the edge of the mounting plate 10 by the wire groove 10 b , thus avoiding the adverse effects such as scratching caused by passing the wire through the housing 20 .

[0059] The formation method of the wire groove 10b is not limited. In some embodiments, the surface of the mounting plate 10 facing the first side is partially missing to form the wire groove 10b. In other words, a local part of the mounting plate 10 is thinned to form the wire groove 10b. In other embodiments, please refer to Figure 2 The local part of the mounting plate 10 protrudes toward the second side to form a wire accommodating groove 10b. In this way, the thickness of the wire accommodating groove 10b can be kept constant, and the structural strength of the mounting plate 10 can be ensured.

[0060] For some examples, see Figure 2 The mounting plate 10 is formed with air vents 10c that penetrate through both sides of the mounting plate 10 in the thickness direction, and the air vents 10c are located at the periphery of the vent 12a. The air vents 10c are used to allow the airflow on the first side of the mounting plate 10 to enter the second side of the mounting plate 10, and then enter the airflow inlet 20a through the vent 12a. The air vents 10c are located at the periphery of the vent 12a, the vent 12a is located in the space enclosed by the housing 20, and the air vents 10c are located outside the space enclosed by the housing 20, so as to prevent the housing 20 from blocking the airflow from flowing through the air vents 10c.

[0061] The material of the mounting plate 10 includes but is not limited to metal.

[0062] The mounting plate 10 may be a sheet metal structure. A sheet metal structure refers to a structure formed by cold processing such as stamping, shearing or bending of a metal plate. The connecting piece 111, the supporting portion 14, the positioning groove 10a and the wiring groove may be formed by processes such as bending and stamping.

[0063] The present application also provides a fresh air device 200, see Figure 4 , comprising a housing 210, a heat exchange core 220 and a fan assembly 100 as described in any embodiment of the present application. The heat exchange core 220 is located in the housing 210; the fan assembly 100 is located in the housing 210, and the mounting plate 10 is connected to the housing 210.

[0064] The housing 210 is used to provide installation space for the heat exchange core 220, the fan and other structures. The shape of the housing 210 can be similar to a rectangular parallelepiped.

[0065] Indoor airflow is usually called return air, and outdoor airflow is usually called fresh air. Indoor airflow and outdoor airflow meet and exchange heat in the heat exchange core 220 to achieve heat recovery and adjust the temperature and / or humidity of the outdoor airflow entering the room. The fresh air device 200 realizes the fresh air function and the exhaust function. The fresh air function is the function of outdoor fresh air entering the room, and the exhaust function is the function of indoor dirty air being discharged to the outside.

[0066] The fan assembly 100 can be used to drive indoor airflow or outdoor airflow.

[0067] The fresh air device 200 provided in the embodiment of the present application can reduce the number of components and the space required for installation; it can ensure the air volume while reducing the volume of the fresh air device 200, and improve the air intake effect through double-sided air intake.

[0068] The fresh air device 200 provided in the embodiment of the present application can be installed on the ceiling or the ceiling panel. The ceiling panel can separate the indoor space into the ceiling space and the living space. Users carry out their daily lives in the living space, and the ceiling space is not only used to beautify the interior decoration, but also to install other equipment. In one embodiment, the fresh air device 200 is arranged in the ceiling space. In this way, the fresh air device 200 is hidden in the ceiling space, avoiding the user from directly observing the entire fresh air device 200, thereby improving the visual aesthetics. It is understandable that the indoor space includes but is not limited to balconies, bathrooms, kitchens, etc., and can be a large-sized house, a small-sized house, or other types of production or living environments.

[0069] When the fresh air device 200 provided in the embodiment of the present application is mounted on a ceiling or a suspended ceiling, taking the case 210 being roughly hexahedral as an example, the up-down direction may be the thickness direction of the shell 210, one of the first direction and the second direction may be the width direction of the shell 210, and the other of the first direction and the second direction may be the length direction of the shell 210. Taking the case where the fresh air device 200 is mounted in a suspended ceiling space as an example, the size of the suspended ceiling space along the up-down direction is much smaller than the size of the suspended ceiling space along the first direction and the second direction, and the thickness direction of the shell 210 is along the up-down direction, which can avoid the problem that the fresh air device 200 is difficult to be mounted in the suspended ceiling space.

[0070] The overall size of the fresh air equipment in the related art is relatively large, the overall machine is heavy, and the installation space for installing the fresh air equipment is limited. For example, the fresh air equipment is usually only suitable for large-sized houses and / or scenes with large balcony ceiling space. In addition, the overall size of the fresh air equipment in the related art is relatively large, resulting in a small maintenance space, making the fresh air equipment inconvenient to maintain and increasing the difficulty of after-sales maintenance. If the overall size of the fresh air equipment is reduced, the size of the heat exchange core and / or air duct of the fresh air equipment will be reduced, resulting in reduced heat exchange efficiency. The reduction in the size of the various components of the air duct causes the air path to change dramatically, resulting in performance problems such as large pressure loss, small air volume, high energy consumption, and high noise.

[0071] For some examples, see Figure 4 The shell 210 is formed with a heat exchange cavity and a fan cavity 210b extending in a plane perpendicular to the up-down direction. The heat exchange core 220 is located in the heat exchange cavity. The fan assembly 100 is located in the fan cavity 210b. The second side of the mounting plate 10 along the thickness direction is connected to the side wall of the shell 210 along the first direction. The rotation axis of the wind wheel 30 extends along the first direction, wherein the first direction is perpendicular to the up-down direction.

[0072] The larger the radial dimension of the wind wheel 30, the larger the radial dimension of the housing 20, and the larger the air volume of the wind wheel 30; conversely, the smaller the radial dimension of the wind wheel 30, the smaller the radial dimension of the housing 20, and the smaller the air volume of the wind wheel 30. If the axis of the wind wheel 30 is in the up-down direction, that is, the wind wheel 30 is arranged on the chassis of the housing 210 in the up-down direction in a lying manner, increasing the radial dimension of the wind wheel 30 will cause the size of the whole machine to be too large. If the radial dimension of the wind wheel 30 is reduced in order to reduce the size of the whole machine, the air volume of the fresh air blower 102 will be too small.

[0073] In this embodiment, the axis of the wind wheel 30 extends along the first direction. When the radial dimension of the wind wheel 30 is large, the wind wheel 30 and the casing 20 will not excessively increase the dimension of the whole machine along the first direction, thereby reducing the volume occupied by the wind turbine assembly 100, making the structural layout more reasonable and the whole machine smaller.

[0074] It can be understood that the axial direction and radial direction of the wind wheel 30 are perpendicular to each other, and the axis of the wind wheel 30 is a straight line extending along the axial direction.

[0075] In one embodiment, the casing 20 is a volute, and the wind wheel 30 is a centrifugal wind wheel.

[0076] In some embodiments, the heat exchange core 220 extends along a first direction. The extension of the heat exchange core 220 along the first direction means that the airflow enters or flows out of the heat exchange core 220 from the circumference surrounding the first direction. The extension of the heat exchange core 220 along the first direction may be that a plurality of heat exchange medium sheets of the heat exchange core 220 are stacked at intervals along the first direction. The heat exchange medium sheets are used for heat exchange between indoor airflow and outdoor airflow. An interval space is formed between two adjacent heat exchange medium sheets. The two adjacent interval spaces can flow indoor airflow and outdoor airflow respectively, and the indoor airflow and the outdoor airflow exchange heat through the heat exchange medium sheets. In other words, the indoor airflow and the outdoor airflow enter and exit the heat exchange core 220 from the circumference surrounding the first direction of the heat exchange core 220. The heat exchange medium sheets can be used for heat exchange but not for circulating airflow.

[0077] There can be two fan assemblies 100, one fan assembly 100 is used to drive indoor air flow, and the other fan assembly 100 is used to drive outdoor air flow. For ease of description, the fan assembly 100 used to drive outdoor air flow is defined as fresh air fan 102, and the fan assembly 100 used to drive indoor air flow is defined as exhaust air fan 101.

[0078] For some examples, see Figure 4 The fan chamber 210b includes an air supply chamber 210b1 and an exhaust chamber 210b2 which are independent of each other. The exhaust passage is connected to the exhaust chamber 210b2, and the air supply passage is connected to the air supply chamber 210b1. The air supply chamber 210b1 is used to install the fresh air fan 102. The exhaust chamber 210b2 is used to install the exhaust fan 101. The air supply chamber 210b1 and the exhaust chamber 210b2 are independent of each other, that is, the indoor air flow in the exhaust chamber 210b2 does not enter the air supply chamber 210b1, the outdoor air flow in the air supply chamber 210b1 does not enter the exhaust chamber 210b2, and no gas flows between the air supply chamber 210b1 and the exhaust chamber 210b2.

[0079] In one embodiment, please refer to Figure 4 The heat exchange core 220 extends along the first direction, the fresh air fan 102 and the exhaust air fan 101 are both located on the same side of the heat exchange core 220 along the first direction, the first side wall 211 of the outer shell 210 along the second direction forms a return air port 211a and a supply air port 211b, the second side wall 212 of the outer shell 210 along the second direction forms a fresh air port 212a and an exhaust air port 212b, the return air channel is located on the first side of the supply air channel along the up-down direction, the fresh air channel is located on the first side of the exhaust air channel along the up-down direction, the supply air chamber 210b1 is located on one side of the supply air channel along the first direction, and the exhaust air chamber 210b2 is located on one side of the exhaust air channel along the first direction.

[0080] The return air channel and the supply air channel are both located on the same side of the heat exchange core 220 along the second direction. The fresh air channel and the exhaust air channel are both located on the same side of the heat exchange core 220 along the second direction. In this way, the sum of the dimensions of the supply air chamber 210b1 and the exhaust air chamber 210b2 along the second direction can be close to the sum of the dimensions of the return air channel, the fresh air channel and the heat exchange core 220 along the second direction. The sum of the dimensions of the supply air chamber 210b1 and the exhaust air chamber 210b2 along the up-down direction can be close to the dimension of the heat exchange core 220 along the up-down direction. Other air ducts can also be designed according to the above principles. In this way, there is almost no useless area in the space inside the shell 210, and the dimensions of each air duct inside the shell 210 are relatively large.

[0081] Regarding indoor airflow: the indoor airflow enters the housing 210 from the return air port 211a, flows along the first airflow path in the housing 210, and then is discharged to the outside from the exhaust port. In other words, the first airflow path is the return air path of the indoor airflow. Specifically: the indoor airflow from the return air port 211a enters the return air channel and flows in a curve toward the first side in the up-down direction, and enters the heat exchange core 220 through the return air inlet surface and flows to the second side. The indoor airflow after heat exchange enters the exhaust air channel through the exhaust air outlet surface, and finally enters the exhaust chamber 210b2 and is discharged through the exhaust port. The indoor airflow flows linearly during the flow process, with almost no airflow dead angle, smooth air path, and small wind resistance.

[0082] Regarding outdoor airflow: the outdoor airflow enters the housing 210 from the fresh air port 212a, flows along the second airflow path in the housing 210, and is then discharged to the room from the air supply port 211b, that is, the second airflow path is the fresh air path for the outdoor airflow. After the outdoor airflow from the fresh air port 212a enters the fresh air channel, it flows in a curve toward the first side in the up-down direction, enters the heat exchange core 220 through the fresh air inlet surface, and flows to the second side. After heat exchange, the outdoor airflow enters the air supply channel through the air supply outlet surface, and finally enters the air supply chamber 210b1 and is discharged through the air supply port 211b. The outdoor airflow flows linearly during the flow process, with almost no airflow dead angle, smooth air path, and small wind resistance.

[0083] In the description of the present application, the description with reference to the terms "in some embodiments" or "exemplary" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present application, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0084] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are included in the protection scope of the present application.

Claims

1. A fan assembly, characterized in that: include: A mounting plate having ventilation holes formed thereon that penetrate through both sides of the mounting plate in a thickness direction; A housing, arranged on a first side of the mounting plate in a thickness direction, air flow inlets are formed on both sides of the housing in a thickness direction, and the vent is connected to the air flow inlet; The wind wheel is located in the casing.

2. The fan assembly according to claim 1, characterized in that: The mounting plate includes a connecting portion and a plate body formed with the vent, the housing is arranged on a first side of the plate body along a thickness direction, and the connecting portion is arranged on a second side of the plate body along the thickness direction.

3. The fan assembly according to claim 2, characterized in that: The connecting portion includes a connecting piece extending from the plate body toward the second side, and the connecting piece is formed with a connecting hole.

4. The fan assembly according to claim 2, characterized in that: The connecting parts are arranged on two opposite sides of the plate body perpendicular to the thickness direction.

5. The fan assembly according to any one of claims 1 to 4, characterized in that: The fan assembly includes a drive motor, and the drive motor is arranged on the mounting plate.

6. The fan assembly according to claim 5, characterized in that: The mounting plate is formed with a positioning groove, and at least a portion of the drive motor is located in the positioning groove.

7. The fan assembly according to claim 5, characterized in that: The fan assembly includes a pressure cover, which is arranged on the first side of the mounting plate to jointly define a limiting cavity, and the driving motor is accommodated in the limiting cavity.

8. The fan assembly according to claim 5, characterized in that: The vent is located at the outer periphery of the drive motor.

9. The fan assembly according to claim 5, characterized in that: The fan assembly includes a conductive wire connected to the drive motor, the drive motor is arranged on a first side of the mounting plate, the mounting plate is formed with a wire accommodating groove, and at least a part of the conductive wire is located in the wire accommodating groove.

10. The fan assembly according to any one of claims 1 to 4, characterized in that: The mounting plate is formed with an air outlet penetrating through both sides of the mounting plate in a thickness direction, and the air outlet is located at the periphery of the vent.

11. A fresh air device, characterized in that: include: shell; a heat exchange core, located in the shell; The fan assembly according to any one of claims 1 to 10 is located in the housing, and the mounting plate is connected to the housing.

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