Fresh air equipment

Abstract

The utility model relates to the technical field of air conditioning, and provides fresh air equipment which comprises a shell, a heat exchange core and a supporting seat, and the heat exchange core is located in the shell; the supporting base is located in the shell, an open groove extending in the first direction is formed in the supporting base, one side wall, in the second direction, of the shell is a base plate, the supporting base is arranged on the base plate, part of the heat exchange core is contained in the open groove, the supporting base is of an integrally-formed structure, and the first direction is perpendicular to the second direction. The supporting seat is of an integrally-formed structure, and the assembling step of the supporting seat can be omitted; the integrated supporting seat can avoid the problems of wrong assembly, neglected assembly and the like of a plurality of parts, and the assembly efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning, and in particular to 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] Fresh air equipment can be used to transport outdoor air into the room and discharge indoor air to the outside. In the related art, a heat exchange core is arranged in the shell of the fresh air equipment, and the heat exchange core is used for heat exchange between indoor air and outdoor air, and the heat exchange core is inconvenient to install. Utility Model Content

[0004] In view of this, the present application hopes to provide a fresh air device that is easy to install a heat exchange core.

[0005] The embodiment of the present application provides a fresh air device, including:

[0006] shell;

[0007] a heat exchange core, located in the shell;

[0008] The support seat is located in the shell, and the support seat is formed with an open groove extending along the first direction. A side wall of the shell along the second direction is a chassis, and the support seat is arranged on the chassis. Part of the heat exchange core is accommodated in the open groove. The support seat is an integrally formed structure, wherein the first direction is perpendicular to the second direction.

[0009] In some embodiments, the support base includes a support body and a fixing plate, the fixing plate abuts against the chassis, the support body is connected to the fixing plate, and the support body forms the open groove.

[0010] In some embodiments, the support seat includes a support body, the support body includes a first inclined plate, a second inclined plate and a support plate, a portion of the support plate is recessed in a direction away from the heat exchange core to form the open groove, the first inclined plate and the second inclined plate are respectively connected to both sides of the support plate along a third direction, wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0011] In some embodiments, the angle between the first inclined plate and the chassis is 90° to 160°; and / or,

[0012] The included angle between the second inclined plate and the chassis is 0° to 113°.

[0013] In some embodiments, the heat exchange core includes a plurality of heat exchange units arranged in sequence along a first direction.

[0014] In some embodiments, the heat exchange core includes a first side surface and a second side surface intersecting each other, a connection between the first side surface and the second side surface is a first corner, and the first corner is accommodated in the open groove.

[0015] In some embodiments, an angle between the second side surface and the inner surface of the chassis is γ, wherein 15°≤γ≤45°.

[0016] In some embodiments, the fresh air device includes a guide frame connected to the support base, and the guide frame abuts against one side of the heat exchange core along the third direction, wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0017] In some embodiments, the guide frame includes a guide plate, which is arranged perpendicular to the first direction and abuts against one side of the heat exchange core along the third direction.

[0018] In some embodiments, the guide plate is formed with a flow hole.

[0019] In some embodiments, the guide frame includes a support ear, a connecting plate and a plurality of the guide plates, the plurality of the guide plates are arranged at intervals along a first direction, the connecting plate connects all the guide plates, two support ears are arranged at intervals along the first direction, the two support ears are respectively connected to one guide plate, and the support ears are connected to the support seat.

[0020] In some embodiments, a heat exchange cavity and a fan cavity are formed in the shell, the heat exchange core and the support seat are both located in the heat exchange cavity, the fresh air device includes a partition plate, the partition plate divides the fan cavity into an air supply chamber and an air exhaust chamber arranged along a third direction, the partition plate includes a bending portion, the bending portion is bent toward the air supply chamber, wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0021] In some embodiments, the fresh air device includes:

[0022] A fresh air fan is located in the air supply chamber;

[0023] The exhaust fan is located in the exhaust chamber, and the axes of the fresh air fan and the exhaust fan both extend along the first direction.

[0024] In some embodiments, the fresh air device includes a partition located in the outer shell, the partition includes a partition plate and an isolation plate, the heat exchange core extends along a first direction, and the circumferential surface of the heat exchange core surrounding the first direction includes a return air inlet surface, a fresh air inlet surface, a second side surface and a first side surface connected in sequence, the connection between the fresh air inlet surface and the second side surface is a second corner, and the connection between the return air inlet surface and the first side surface is a third corner, the partition plate and the isolation plate are respectively located on both sides of the heat exchange core along a third direction, the second corner is connected to the isolation plate, and the third corner is connected to the partition plate, wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0025] In the fresh air device provided in the embodiment of the present application, the support base can be used to support the heat exchange core, and the open groove is used to position and limit the heat exchange core, which can avoid the displacement of the heat exchange core to a certain extent and facilitate assembly and fixation. The support base is an integrated molding structure, which can save the assembly steps of the support base; the integrated support base can avoid the problems of wrong installation and missing installation of multiple parts, and improve assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a structural schematic diagram of a fresh air device in one embodiment of the present application;

[0027] Figure 2 for Figure 1 A schematic diagram of the structure of the medium fresh air device with the cover omitted from another perspective, wherein the first airflow path X1 is the indoor airflow path, and the second airflow path X2 is the outdoor airflow path;

[0028] Figure 3 for Figure 1 A partial cross-sectional view of the fresh air device shown, wherein the dotted arrows schematically show the flow directions of the indoor airflow and the outdoor airflow;

[0029] Figure 4 This is a schematic diagram of the assembly of a partial structure of the housing and the support base in one embodiment of the present application;

[0030] Figure 5 This is a schematic diagram of the assembly of a heat exchange core and a support base in one embodiment of the present application;

[0031] Figure 6 This is a schematic diagram of the structure of a support base in an embodiment of the present application;

[0032] Figure 7 for Figure 1 A schematic diagram showing a partial structure of the fresh air device from another perspective;

[0033] Figure 8 for Figure 1A schematic diagram showing a partial structure of the fresh air device from another perspective;

[0034] Fig. 9 for Figure 2 A schematic cross-sectional view of the structure shown.

[0035] Description of Reference Numerals

[0036] Shell 1; return air inlet 1a; supply air inlet 1b; fresh air inlet 1c; exhaust air inlet 1d; chassis 11; first side wall 12; second side wall 13; cover 14; heat exchange chamber 10a; return air channel 101a; supply air channel 102a; fresh air channel 103a; exhaust air channel 104a; fan chamber 10b; supply air chamber 101b; exhaust air chamber 102b;

[0037] Heat exchange core 2; heat exchange unit 210; first side 2'; second side 2"; first corner 201; second corner 202; third corner 203; fourth corner 204; return air inlet surface 2a; fresh air inlet surface 2b; supply air outlet surface 2c; exhaust air outlet surface 2d;

[0038] Support seat 3; opening groove 3a; convex bump 3b; limiting hole 3c; support body 31; first inclined plate 311; second inclined plate 312; support plate 313; fixing plate 32;

[0039] Guide frame 4; positioning hole 4a; guide plate 41; circulation hole 41a; support ear 42; connecting plate 43; partition plate 5; bending portion 51; folded edge 52; fresh air fan 6; exhaust fan 7; partition 8; partition plate 81; isolation plate 82; partition plate 83; air expansion plate 84; frame 85; vent 85a; stopper 9; connecting pipe flange 10. DETAILED DESCRIPTION

[0040] 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.

[0041] It should be noted that in the embodiments of the present application, down refers to the direction where the ground is located, and up is opposite to down; the first direction, the second direction and the third direction are three-dimensional vertical coordinate systems that are perpendicular to each other, and the first side of the second direction and the second side of the second direction are two opposite directions. In the embodiments of the present application, the orientation or position relationship of "first direction", "second direction" and "third direction" is based on the orientation or position relationship shown in the accompanying 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 accompanying drawings and specific embodiments.

[0042] In the related art, the heat exchange core is installed to the outer shell through multiple parts such as support members and mounting rails. The support members, mounting rails and other multiple parts are fixed into a whole by multiple rivets, and then the whole is fixed to the outer shell by rivets. The assembly is complicated and the assembly efficiency is low. The support members and mounting rails are also easy to block the airflow of the heat exchange core, increasing wind resistance.

[0043] See also Figures 1 to 5 The embodiment of the present application provides a fresh air device, which includes a housing 1, a heat exchange core 2 and a support base 3. The heat exchange core 2 is located in the housing 1, and the support base 3 is located in the housing 1. The support base 3 is formed with an open groove 3a extending along a first direction, a side wall of the housing 1 along a second direction is a chassis 11, the support base 3 is arranged on the chassis 11, a part of the heat exchange core 2 is accommodated in the open groove 3a, and the support base 3 is an integrally formed structure, wherein the first direction is perpendicular to the second direction.

[0044] Indoor airflow is usually called return air, and outdoor airflow is usually called fresh air. Both indoor airflow and outdoor airflow flow through the heat exchange core 2 and exchange heat through the heat exchange core 2 to achieve heat recovery and adjust the temperature and / or humidity of the outdoor airflow entering the indoor environment. The fresh air equipment 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.

[0045] During installation of the heat exchange core 2, the heat exchange core 2 can be placed into the support base 3 from the side away from the bottom plate 11, and part of the heat exchange core 2 is inserted into the opening groove 3a, which is easy to operate.

[0046] In the fresh air device provided in the embodiment of the present application, the support base 3 can be used to support the heat exchange core 2, and the opening groove 3a is used to position and limit the heat exchange core 2, thereby preventing the heat exchange core 2 from shifting to a certain extent, and facilitating assembly and fixation. The support base 3 is an integrated structure, which can save assembly steps for the support base 3; the integrated support base 3 can avoid problems such as misassembly and missing of multiple parts, and improve assembly efficiency.

[0047] In one embodiment, please refer to Figures 4 to 6 The heat exchange core 2 includes a plurality of heat exchange units 210 arranged in sequence along the first direction. That is, each heat exchange unit 210 can be separately disassembled and then assembled into the heat exchange core 2. During the assembly of the heat exchange core 2, the plurality of heat exchange units 210 can enter the open groove 3a one by one and can slide in the open groove 3a along the first direction to complete the arrangement of the plurality of heat exchange units 210 along the first direction, thereby reducing the assembly difficulty.

[0048] It can be understood that, taking the plane perpendicular to the first direction as the cross section, the cross-sectional shapes of the heat exchange units 210 can be the same and the sizes can be equal.

[0049] In one embodiment, please refer to Figure 5 and Figure 6 The heat exchange core 2 includes a first side surface 2' and a second side surface 2" intersecting each other. The connection between the first side surface 2' and the second side surface 2" is a first corner 201, and the first corner 201 is accommodated in the opening groove 3a. The first side surface 2' and the second side surface 2" can be used for airflow.

[0050] In this embodiment, the plane perpendicular to the first direction is used as the projection plane, the contour shape of the projection of the first corner 201 can be roughly V-shaped or U-shaped, the projection shape of the opening groove 3a can be roughly V-shaped or U-shaped, the first corner 201 is accommodated in the opening groove 3a, and the heat exchange core 2 is placed on the chassis 11 in an inclined sideways posture, which can prevent the chassis 11 from blocking the first side 2' and the second side 2", and facilitate airflow.

[0051] In one embodiment, please refer to Figures 2 to 8 The fresh air device includes a partition 8 located in the outer shell 1, and the partition 8 includes a partition plate 81 and an isolation plate 82. The heat exchange core 2 extends along the first direction. The circumferential surface of the heat exchange core 2 surrounding the first direction includes a return air inlet surface 2a, a fresh air inlet surface 2b, a second side surface 2" and a first side surface 2' connected in sequence. The connection between the fresh air inlet surface 2b and the second side surface 2" is a second corner 202, and the connection between the return air inlet surface 2a and the first side surface 2' is a third corner 203. The partition plate 81 and the isolation plate 85 are respectively located on both sides of the heat exchange core 2 along the third direction, the second corner 202 is connected to the isolation plate 82, and the third corner 203 is connected to the partition plate 81.

[0052] The first side surface 2' may be an air supply outlet surface 2c, and the second side surface 2" may be an air exhaust outlet surface 2d.

[0053] The exhaust air outlet surface 2d is opposite to the return air inlet surface 2a, the supply air outlet surface 2c is opposite to the fresh air inlet surface 2b, and the return air inlet surface 2a, the fresh air inlet surface 2b, the exhaust air outlet surface 2d and the supply air outlet surface 2c are connected in sequence.

[0054] The return air inlet surface 2a is the surface where the indoor air enters the heat exchange core 2. The fresh air inlet surface 2b is the surface where the outdoor air enters the heat exchange core 2. The exhaust air outlet surface 2d is the surface where the indoor air exits the heat exchange core 2. The supply air outlet surface 2c is the surface where the outdoor air exits the heat exchange core 2.

[0055] The outdoor air flow before heat exchange enters the heat exchange core 2 through the fresh air inlet surface 2b, and the outdoor air flow after heat exchange flows out of the heat exchange core 2 through the air supply outlet surface 2c.

[0056] The indoor air flow before heat exchange enters the heat exchange core 2 through the return air inlet surface 2a, and the indoor air flow after heat exchange flows out of the heat exchange core 2 through the exhaust air outlet surface 2d.

[0057] The return air inlet surface 2a, the fresh air inlet surface 2b, the exhaust air outlet surface 2d and the supply air outlet surface 2c are connected in sequence, and in the plane projection perpendicular to the first direction, the projection formed by the return air inlet surface 2a, the fresh air inlet surface 2b, the exhaust air outlet surface 2d and the supply air outlet surface 2c is a quadrilateral. In other words, taking the plane perpendicular to the first direction as the cross section, the cross section of the heat exchange core 2 is a quadrilateral, for example, it can be a regular quadrilateral. Compared with the heat exchange core with a hexagonal or larger cross section, the cross-sectional area of ​​the heat exchange core 2 of the present application is smaller, and the size of the heat exchange core 2 in the third direction and the second direction is smaller.

[0058] The exhaust air outlet surface 2d is opposite to the return air inlet surface 2a, and the supply air outlet surface 2c is opposite to the fresh air inlet surface 2b. In this way, the indoor airflow and the outdoor airflow cross-flow, which can improve the heat exchange efficiency. When the cross-sectional size of the heat exchange core 2 is small, the size of the heat exchange core 2 along the first direction can be used to maintain the heat exchange performance.

[0059] In this embodiment, the first corner 201 is accommodated in the opening groove 3a, the second corner 202 can be fixed to the isolation plate 82, and the third corner 203 is fixed to the partition plate 81. In this way, the heat exchange core 2 is tilted and stands on the chassis 11, and the outdoor airflow after heat exchange from the air supply outlet surface 2c and the outdoor airflow after heat exchange from the exhaust outlet surface 2d are almost not blocked by the chassis 11. In the case of limited internal space of the shell 1, the smoothness of air inlet and outlet in four directions and the effective heat exchange area of ​​the heat exchange core 2 are taken into account, the heat exchange efficiency is higher, the unit volume efficiency is optimized, and the enthalpy exchange efficiency equivalent to that of a large model is achieved within a limited volume.

[0060] The extension of the heat exchange core 2 along the first direction means that the airflow enters or flows out of the heat exchange core 2 from the circumference surrounding the first direction. For example, the extension of the heat exchange core 2 along the first direction may be that a plurality of heat exchange medium sheets of the heat exchange core 2 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 2 from the circumference surrounding the first direction of the heat exchange core 2. The heat exchange medium sheets can be used for heat exchange but not for circulating airflow.

[0061] In one embodiment, please refer to Figures 3 to 6The support seat 3 includes a support body 31 and a fixing plate 32. The fixing plate 32 abuts against the chassis 11. The support body 31 is connected to the chassis 11, and the support body 31 forms an open groove 3a. Exemplarily, the support body 31 is connected to a side of the fixing plate 32 away from the chassis 11 along the second direction.

[0062] Exemplarily, both sides of the support body 31 along the third direction are connected with fixing plates 32. In this way, the fixing plates 32 are more evenly stressed, and the center of gravity of the support base 3 is more stable.

[0063] In this embodiment, the fixing plate 32 can increase the contact area between the support base 3 and the chassis 11, improve the force on the support base 3, and make the support base 3 more stably fixed on the chassis 11, thereby more stably supporting the heat exchange core 2.

[0064] For example, the support base 3 and the chassis 11 may be detachably connected or non-detachably connected. The detachable connection includes but is not limited to screw connection or bolt connection and the like.

[0065] In one embodiment, the fixing plate 32 may be fixed to the chassis 11 by fasteners.

[0066] Fasteners include but are not limited to screws or bolts and the like.

[0067] In one embodiment, please refer to Figures 3 to 6 The support seat 3 includes a support body 31, and the support body 31 includes a first inclined plate 311, a second inclined plate 312 and a support plate 313. A part of the support plate 313 is recessed in a direction away from the heat exchange core 2 to form an open groove 3a. The first inclined plate 311 and the second inclined plate 312 are respectively connected to both sides of the support plate 313 along the third direction, wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0068] In this embodiment, the first inclined plate 311 and the second inclined plate 312 can not only provide support for the support plate 313, thereby stably supporting the heat exchange core 2, but also guide the airflow, reduce the airflow blockage in the surrounding area of ​​the first inclined plate 311 and the heat exchange core 2, and reduce the airflow blockage in the surrounding area of ​​the second inclined plate 312 and the heat exchange core 2, thereby reducing wind resistance. For example, the outdoor airflow after heat exchange from the air supply outlet surface 2c can flow under the guidance of the first inclined plate 311, reducing airflow dead angles. The outdoor airflow after heat exchange from the exhaust outlet surface 2d can flow under the guidance of the second inclined plate 312, reducing airflow dead angles, reducing air duct resistance, and reducing the speed and noise of the whole machine.

[0069] In one embodiment, please refer to Figure 3 and Figure 5, the first inclined plate 311 can be roughly parallel to the exhaust air outlet surface 2d, and the second inclined plate 312 can be roughly parallel to the supply air outlet surface 2c. In this way, the direction in which the outdoor air flows out of the heat exchange core 2 is roughly parallel to the first inclined plate 311, and the direction in which the indoor air flows out of the heat exchange core 2 is roughly parallel to the second inclined plate 312, and the air path is smoother.

[0070] For some examples, see Figure 6 The two ends of the first inclined plate 311 are respectively connected to a fixing plate 32 and a supporting plate 313 , and the two ends of the second inclined plate 312 are respectively connected to another fixing plate 32 and a supporting plate 313 .

[0071] In one embodiment, please refer to Figure 4 and Figure 5 , the angle β between the first inclined plate 311 and the chassis 11 is 90° to 160°. Exemplarily, the angle β between the first inclined plate 311 and the chassis 11 is 90°, 100°, 110°, 120°, 130°, 140°, 150°, 155° or 160°, etc. The fixing plate 32 can be parallel to the chassis 11, and the angle between the first inclined plate 311 and the fixing plate 32 connected thereto is 90° to 160°. The inclination angle of the heat exchange core 2 is adjusted by adjusting the angle between the first inclined plate 311 and the chassis 11, thereby adjusting the volume of the air duct on both sides of the heat exchange core 2 along the third direction. The angle between the first inclined plate 311 and the chassis 11 is 90° to 160°, and the heat exchange core 2 is biased toward the second inclined plate 312 to increase the space of the heat exchange core 2 close to the first inclined plate 311, thereby increasing the volume of the air duct close to the first inclined plate 311, such as the supply air duct 102a, and balancing the volume of the supply air duct 102a and the exhaust air duct 104a, so as to take into account the wind speed in the supply air duct and the exhaust air duct 104a and reduce noise.

[0072] In one embodiment, please refer to Figure 4 and Figure 5, the angle α between the second inclined plate 312 and the chassis 11 is 0° to 113°. Exemplarily, the angle α between the second inclined plate 312 and the chassis 11 is 0°, 10°, 20°, 50°, 80°, 100°, 105°, 110° or 113°. The fixing plate 32 may be parallel to the chassis 11, and the angle between the second inclined plate 312 and the fixing plate 32 connected thereto is 0° to 113°. The inclination angle of the heat exchange core 2 is adjusted by adjusting the angle between the second inclined plate 312 and the chassis 11, thereby adjusting the volume of the air duct on both sides of the heat exchange core 2 along the third direction. The angle between the second inclined plate 312 and the chassis 11 is 0°~113°, and the heat exchange core 2 is biased toward the side of the second inclined plate 312 to increase the space of the heat exchange core 2 close to the first inclined plate 311, thereby increasing the volume of the air duct close to the first inclined plate 311, such as the supply air duct 102a, and balancing the volume sizes of the supply air duct 102a and the exhaust air duct 104a, so as to take into account the wind speed in the supply air duct and the exhaust air duct 104a and reduce noise.

[0073] The material of the support seat 3 includes but is not limited to metal or plastic. The support seat 3 can be a sheet metal structure. The sheet metal structure is a structure formed by cold processing such as stamping, shearing or bending of a metal plate. The support seat 3 has good structural strength and low manufacturing cost.

[0074] The material of the chassis 11 includes but is not limited to metal or plastic, etc. The chassis 11 may be a sheet metal structure. The sheet metal structure is a structure formed by cold processing such as stamping, shearing or bending of a metal plate.

[0075] In one embodiment, please refer to Figures 3 to 6 The included angle between the second side surface 2″ and the inner surface of the chassis 11 is γ, wherein 15°≤γ≤45°. Exemplarily, γ may be 15°, 17°, 18°, 20°, 23°, 25°, 30° or 45°, etc.

[0076] For example, the angle between the first side surface 2' and the second side surface 2" may be approximately 90°. Taking the plane perpendicular to the first direction as the cross section, the cross section of the heat exchange core 2 is a regular quadrilateral.

[0077] In this embodiment, the angle γ between the second side surface 2" and the inner surface of the chassis 11 is between 15° and 45°. On the one hand, the smoothness of air inlet and outlet in four directions and the effective heat exchange area of ​​the heat exchange core 2 are taken into account. The volume of the heat exchange core 2 is smaller than that of the heat exchange core of the fresh air equipment in the related art, but the heat exchange efficiency is higher; on the other hand, considering that the fresh air filter on the fresh air path includes a high-efficiency filter, the pressure loss is large, and the load of the fresh air motor is large, the air supply channel 102a is relatively wide and the exhaust channel 104a is relatively narrow. In this way, the loads of the fresh air motor and the exhaust motor are relatively balanced, thereby improving the power of the whole machine and the life of the motor.

[0078] It can be understood that the fresh air motor is used to drive the wind wheel of the fresh air fan 6 to rotate. The exhaust air motor is used to drive the wind wheel of the exhaust air fan 7 to rotate.

[0079] As an example, the heat exchange core 2 extends along the first direction, with a plane perpendicular to the first direction as the cross section, and the cross-sectional shape of the heat exchange core 2 is a regular quadrilateral. The heat exchange core 2 includes a plurality of heat exchange medium sheets stacked along the first direction, and the angle γ between the second side surface 2" and the inner surface of the chassis 11 is between 15° and 45°. For example, the size of the heat exchange medium sheet along the first direction can be 1.3 mm (millimeter). Compared with the heat exchange medium sheets stacked along the third direction in the related art, the number of heat exchange medium sheets in the technical solution of the present application can be increased by about 81%. The volume of the fresh air equipment of the present application is reduced by about 51% compared with the models in the related art, but the heat exchange efficiency is higher, the unit volume efficiency is optimized, and the enthalpy exchange efficiency equivalent to that of a large model is achieved within a limited volume.

[0080] In one embodiment, please refer to Figures 3 to 6 The fresh air device includes a guide frame 4 connected to the support base 3, and the guide frame 4 abuts against one side of the heat exchange core 2 along the third direction, wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0081] Taking the example of the first corner 201 of the heat exchange core 2 being located at the opening groove 3a, the heat exchange core 2 is tilted and stands on the support seat 3. In this embodiment, during the process of the heat exchange core 2 being inserted into the opening groove 3a along the second direction, the guide frame 4 guides the heat exchange core 2, thereby reducing the requirements for assembly skills and improving assembly efficiency. The guide frame 4 can also strengthen the support for the heat exchange core 2 to prevent the heat exchange core 2 from escaping from the opening groove 3a due to unstable center of gravity. The size of the opening groove 3a can be relatively small to prevent the groove wall of the opening groove 3a from blocking the heat exchange core 2.

[0082] In one embodiment, please refer to Figures 3 to 6 The guide frame 4 includes a guide piece 41, which is arranged perpendicular to the first direction, and the guide piece 41 abuts against one side of the heat exchange core 2 along the second direction. The guide piece 41 is arranged perpendicular to the first direction, which means that the thickness direction of the guide piece 41 is consistent with the first direction. The structure of the guide piece 41 is simple, and the contact area between the guide piece 41 and the heat exchange core 2 is small, which can greatly reduce the impact on the airflow of the heat exchange core 2.

[0083] In one embodiment, please refer to Figures 5 and 6 The guide piece 41 is formed with a flow hole 41a. Exemplarily, the flow hole 41a can penetrate two opposite sides of the guide piece 41 along the first direction. The airflow can flow through the flow hole 41a, reducing airflow obstruction and reducing the weight of the guide piece 41.

[0084] In one embodiment, please refer to Figures 3 to 6 The guide frame 4 includes a support ear 42, a connecting piece 43 and a plurality of guide pieces 41. The plurality of guide pieces 41 are arranged at intervals along the first direction. The connecting piece 43 connects all the guide pieces 41. Two support ears 42 are arranged at intervals along the first direction. The two support ears 42 are respectively connected to a guide piece 41. The support ears 42 are connected to the support seat 3. With such a design, the guide frame 4 has a simple structure, light weight and good structural strength. The contact area between the guide frame 4 and the heat exchange core 2 is small, which reduces the obstruction of the airflow of the heat exchange core 2. The plurality of guide pieces 41 can provide stable support and effective guidance for the heat exchange core 2.

[0085] The material of the guide frame 4 includes but is not limited to metal or plastic, etc. The guide frame 4 can be a sheet metal structure. The sheet metal structure is a structure formed by cold processing such as stamping, shearing or bending of a metal plate.

[0086] In one embodiment, please refer to Figure 6 The support seat 3 is provided with a plurality of guide frames 4 along a first direction.

[0087] The guide frame 4 and the support seat 3 may be detachably connected or non-detachably connected, and the non-detachable connection includes but is not limited to welding, such as spot welding, and the detachable connection includes but is not limited to screw or bolt connection.

[0088] In one embodiment, please refer to Figure 5 and Figure 6 , one of the guide frame 4 and the support seat 3 is formed with a convex bulge 3b, and the other of the guide frame 4 and the support seat 3 is formed with a positioning hole 4a, and the convex bulge 3b is inserted into the positioning hole 4a. For example, the lug 42 may be formed with the convex bulge 3b or the positioning hole 4a. The convex bulge 3b may be inserted into the positioning hole 4a first, and then the guide frame 4 may be fixed to the support seat 3 by welding or screw connection.

[0089] For some examples, see Figure 6 The support seat 3, for example, the fixing plate 32 can form a limiting hole 3c, and the chassis 11 forms a limiting column, which is inserted into the limiting hole 3c. The limiting column can be inserted into the limiting hole 3c first, and then the support seat 3 can be fixed to the chassis 11 by welding or screw connection.

[0090] In one embodiment, please refer to Figure 2 , Figure 7 and Figure 8 A heat exchange chamber 10a and a fan chamber 10b are formed in the shell 1, the heat exchange core 2 and the support seat 3 are both located in the heat exchange chamber 10a, and the fresh air device includes a partition plate 5, which divides the fan chamber 10b into an air supply chamber 101b and an air exhaust chamber 102b arranged along a third direction. The partition plate 5 includes a bending portion 51, and the bending portion 51 is bent toward the air supply chamber 101b, wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0091] The exhaust chamber 102b and the supply chamber 101b can be independent of each other, that is, the indoor airflow of the exhaust chamber 102b does not enter the supply chamber 101b, the outdoor airflow in the supply chamber 101b does not enter the exhaust chamber 102b, and no gas flows between the exhaust chamber 102b and the supply chamber 101b.

[0092] Exemplarily, two ends of the partition plate 5 along the first direction may be connected to the side wall of the housing 1 and the partition 8 of the fresh air device respectively.

[0093] In this embodiment, the air volume of the exhaust chamber 102b is larger than that of the supply chamber 101b, and the bent portion 51 bends toward the supply chamber 101b to increase the volume of the exhaust chamber 102b, reduce the wind speed in the exhaust chamber 102b, and reduce noise.

[0094] In one embodiment, please refer to Figure 8 At least one end of the partition plate 5 along the first direction may form a folded edge 52. The folded edge 52 can not only strengthen the rigidity of the partition plate 5, but also can contact and seal with the sealing layer on the inner surface of the housing, the partition 8, etc.

[0095] In one embodiment, please refer to Figures 7 to 9 The housing 1 includes a first side wall 12 and a second side wall 13 opposite to each other along a third direction, the first side wall 12 is a part of the air supply chamber 101b, the second side wall 13 is a part of the exhaust chamber 102b, the distance between the bending portion 51 and the first side wall 12 is L1, and the distance between the bending portion 51 and the second side wall 13 is L2, wherein 1<L2 / L1≤1.5. That is, the ratio of L2 to L1 is greater than 1 and not less than 1.5. Exemplarily, L2 / L1 can be 1.1, 1.2, 1.3 or 1.5, etc. On the one hand, the bending portion 51 can avoid the indoor airflow from the exhaust passage 104a, avoid turbulence and turbulence, and reduce wind noise by optimizing the volume of the air supply chamber 101b and the exhaust chamber 102b. On the other hand, the bending portion 51 can ensure that the air supply chamber 101b and the exhaust chamber 102b can use a fan of the same size, avoiding the problem of increasing material costs and difficult assembly distinction.

[0096] In one embodiment, please refer to Figure 2 The fresh air equipment includes a fresh air fan 6 and an exhaust air fan 7. The fresh air fan 6 is located in the air supply chamber 101b, and the exhaust air fan 7 is located in the exhaust chamber 102b. The axes of the fresh air fan 6 and the exhaust air fan 7 both extend along the first direction.

[0097] The fresh air fan 6 drives the fresh air to flow, that is, drives the outdoor air flow, and the exhaust air fan 7 drives the return air to flow, that is, drives the indoor air flow.

[0098] The larger the radial dimensions of the fresh air fan 6 and the exhaust air fan 7 are, the larger the air volume of the fresh air fan 6 and the exhaust air fan 7 is; conversely, the smaller the radial dimensions of the fresh air fan 6 and the exhaust air fan 7 are, the smaller the air volume of the fresh air fan 6 and the exhaust air fan 7 is. Taking the second direction as being consistent with the up-down direction as an example, if the axes of the fresh air fan 6 and the exhaust air fan 7 are along the second direction, that is, the fresh air fan 6 and the exhaust air fan 7 are arranged on the chassis 11 of the housing 1 in a lying manner, increasing the radial dimensions of the fresh air fan 6 and the exhaust air fan 7 will cause the size of the whole machine to be too large. If the radial dimensions of the fresh air fan 6 and the exhaust air fan 7 are reduced in order to reduce the size of the whole machine, the air volume of the fresh air fan 6 and the exhaust air fan 7 will be too small. In other words, when the radial dimensions of the fresh air fan 6 and the exhaust air fan 7 are large, the size of the housing 1 along the first direction will be excessively increased, which is not conducive to product miniaturization.

[0099] In this embodiment, the axis of the fresh air fan 6 and the axis of the exhaust fan 7 both extend along the first direction. When the radial dimensions of the fresh air fan 6 and the exhaust fan 7 are large, the fresh air fan 6 and the exhaust fan 7 will not excessively increase the dimensions of the entire machine along the first direction, thereby reducing the volume occupied by the fresh air fan 6 and the exhaust fan 7, making the structural layout more reasonable and the volume of the entire machine smaller.

[0100] It is understandable that the axial direction and radial direction of the fresh air fan 6 are perpendicular to each other, and the axis of the fresh air fan 6 is a straight line extending along the axial direction. The axial direction and radial direction of the exhaust fan 7 are perpendicular to each other, and the axis of the exhaust fan 7 is a straight line extending along the axial direction.

[0101] In some embodiments, both the fresh air fan 6 and the exhaust air fan 7 are centrifugal fans. Exemplarily, the centrifugal fan includes a fan housing and a wind wheel, and the wind wheel is located in the fan housing. The wind wheel rotates to drive the airflow, and the fan housing plays a guiding role. The axis of the wind wheel and the axis of the fan housing can extend along the first direction, so that increasing the radial size of the wind wheel and the fan housing will not substantially increase the size along the first direction.

[0102] In one embodiment, the fan casing is a volute casing.

[0103] In one embodiment, the fan housing is provided with air inlets on both sides along the first direction, and the fan housing is provided with air outlets on a circumferential surface surrounding the first direction. The airflow enters the fan housing through the two air inlets and then flows out through the air outlets.

[0104] The fresh air device provided in the embodiment of the present application can be installed on the ceiling or ceiling panel. The ceiling panel can separate the indoor space into a ceiling space and a 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 is arranged in the ceiling space. In this way, the fresh air device is hidden in the ceiling space, avoiding the user from directly observing the entire fresh air device, 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.

[0105] When the fresh air device provided in the embodiment of the present application is installed on the ceiling or ceiling board, the second direction is consistent with the up-down direction, the first side of the second direction can be the bottom, and the second side of the second direction can be the top. Taking the shell 1 as an example of being roughly hexahedral, the second direction can be the thickness direction of the shell 1, one of the first direction and the third direction can be the width direction of the shell 1, and the other of the first direction and the third direction can be the length direction of the shell 1. Taking the fresh air device installed in the ceiling space as an example, the size of the ceiling space along the up-down direction is much smaller than the size of the ceiling space along the first direction and the third direction, and the thickness direction of the shell 1 is along the up-down direction, which is convenient for the fresh air device to be installed in the ceiling space.

[0106] If the heat exchange core 2 extends in the second direction, that is, multiple heat exchange medium sheets are stacked in the second direction, the thickness of the housing 1 in the vertical direction will be greatly increased, making it difficult for the whole machine to be assembled into an installation space with a smaller size in the vertical direction. If the size of the heat exchange core 2 in the second direction is reduced in order to adapt to the installation space with a smaller size in the vertical direction, the number of heat exchange medium sheets will be too small or the spacing will be too small, resulting in poor heat exchange effect.

[0107] In the present application, the heat exchange core 2 extends along the first direction, so that the size of the heat exchange core 2 along the first direction can be larger and will not affect the thickness of the shell 1 along the up and down directions. In this way, the thickness of the shell 1 along the up and down directions can be designed as needed without affecting the heat exchange efficiency, which not only meets the installation requirements but also takes into account the heat exchange requirements.

[0108] 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. In some cases, the overall size of the fresh air equipment in the related technology is large, and the plates used to isolate the air ducts in the fresh air equipment are flat-shaped. The flat-shaped plates are usually perpendicular to the chassis of the outer shell. The plates isolating the air ducts do not have the function of guiding air, and will also cause the air ducts to include many 90° turns, increasing the useless area in the outer shell and causing space waste in the outer shell; the direction of indoor air flow and outdoor air flow is usually curved, and therefore, eddy currents will appear at the intersection corners of each plate and the chassis, such as 90° turns, affecting the heat exchange efficiency and increasing the pressure loss of the entire heat exchange process. The unsmooth air path of the air flow will also increase the motor load of the fresh air equipment, thereby increasing the speed, and increasing the machine noise and vibration.

[0109] In one embodiment, please refer to Figure 2 , the heat exchange core 2 extends along the first direction, and the air supply chamber 101b and the exhaust chamber 102b are both located on the same side of the heat exchange core 2 along the first direction. In other words, the fresh air fan 6 and the exhaust air fan 7 are arranged along the third direction and are both located on the same side of the heat exchange core 2 along the first direction.

[0110] In this embodiment, if the fresh air fan 6 and the exhaust air fan 7 are located on different sides of the heat exchange core 2 along the first direction, the fresh air fan 6 and the exhaust air fan 7 respectively occupy the space in the housing 1 along the first direction, causing the size of the housing 1 along the first direction to increase; while the fresh air fan 6 and the exhaust air fan 7 are both located on the same side of the heat exchange core 2 along the first direction, the fresh air fan 6 and the exhaust air fan 7 will not increase the size of the housing 1 along the first direction respectively, and the fresh air fan 6, the exhaust air fan 7 and the heat exchange core 2 have a compact structure. The fresh air fan 6 and the exhaust air fan 7 are arranged along the third direction, making full use of the space of the housing 1 along the third direction, and comprehensively considering the space of the housing 1 along the first direction and the third direction, thereby reducing the overall size of the fresh air device and meeting the miniaturization requirements.

[0111] In one embodiment, please refer to Figure 2 , Figure 3 , Figure 7 and Figure 8The partition 8 defines the space in the shell 1 as a heat exchange chamber 10a and a fan chamber 10b. The partition plate 81 and the isolation plate 82 are respectively connected to the two sides of the heat exchange core 2 along the third direction. The partition plate 81 separates the heat exchange chamber 10a into a return air channel 101a and an air supply channel 102a. The isolation plate 82 separates the heat exchange chamber 10a into a fresh air channel 103a and an exhaust air channel 104a.

[0112] The two surfaces in the thickness direction of the partition plate 81 can be partial surfaces of the return air channel 101a and partial surfaces of the supply air channel 102a, respectively. The return air channel 101a is used to transport the indoor airflow to the heat exchange core 2, that is, the return air channel 101a is used to transport the indoor airflow before heat exchange. The supply air channel 102a is used to transport the outdoor airflow from the heat exchange core 2, that is, the supply air channel 102a is used to transport the outdoor airflow after heat exchange. The return air channel 101a and the supply air channel 102a are independent of each other, that is, the indoor airflow of the return air channel 101a does not enter the supply air channel 102a, the outdoor airflow in the supply air channel 102a does not enter the return air channel 101a, and no gas flows between the return air channel 101a and the supply air channel 102a.

[0113] The two surfaces in the thickness direction of the isolation plate 82 may be partial surfaces of the fresh air channel 103a and partial surfaces of the exhaust air channel 104a, respectively. The fresh air channel 103a is used to transport outdoor airflow to the heat exchange core 2, that is, the fresh air channel 103a is used to transport outdoor airflow before heat exchange. The exhaust air channel 104a is used to transport indoor airflow from the heat exchange core 2, that is, the exhaust air channel 104a is used to transport indoor airflow after heat exchange. The fresh air channel 103a and the exhaust air channel 104a are independent of each other, that is, the outdoor airflow of the fresh air channel 103a does not enter the exhaust air channel 104a, the indoor airflow in the exhaust air channel 104a does not enter the fresh air channel 103a, and no gas flows between the fresh air channel 103a and the exhaust air channel 104a.

[0114] In this embodiment, the partition plate 81 separates part of the space in the heat exchange chamber 10a into a return air channel 101a and an air supply channel 102a, and the partition plate 82 separates part of the space in the heat exchange chamber 10a into a fresh air channel 103a and an exhaust air channel 104a, which has a simple structure. The length directions of the fresh air channel 103a, the exhaust air channel 104a, the return air channel 101a, the air supply channel 102a and the heat exchange core 2 can all be along the first direction, so that the sizes of the above-mentioned air channel and the heat exchange core 2 can be larger.

[0115] In one embodiment, please refer to Figure 2 , Figure 3 , Figure 7 and Figure 8The return air channel 101a is located at a first side of the supply air channel 102a along the second direction, and the fresh air channel 103a is located at a first side of the exhaust air channel 104a along the second direction.

[0116] In this embodiment, the return air channel 101a and the supply air channel 102a are distributed along the second direction, and the fresh air channel 103a and the exhaust air channel 104a are distributed along the second direction. The length directions of the fresh air channel 103a, the exhaust air channel 104a, the return air channel 101a, the supply air channel 102a and the heat exchange core 2 can all be along the first direction. The sum of the dimensions of the fresh air channel 103a and the exhaust air channel 104a in the second direction can be roughly equal to the dimension of the fan cavity 10b along the second direction. The sum of the dimensions of the return air channel 101a and the supply air channel 102a in the second direction can be roughly equal to the dimension of the fan cavity 10b along the second direction. Without increasing the overall size of the outer shell 1 or the overall size of the outer shell 1 is relatively small, the volumes of the return air channel 101a, the supply air channel 102a, the fresh air channel 103a, the exhaust air channel 104a and the fan cavity 10b can be larger, and the resistance on the airflow path can be smaller.

[0117] In one embodiment, please refer to Figure 2 , Figure 3 , Figure 7 and Figure 8 The first side wall 12 of the housing 1 along the third direction is formed with a return air port 1a and an air supply port 1b, and the second side wall 13 of the housing 1 along the third direction is formed with a fresh air port 1c and an exhaust port 1d, the return air port 1a is connected to the return air channel 101a, the fresh air port 1c is connected to the fresh air channel 103a, the air supply port 1b is connected to the air supply chamber 101b, and the exhaust port 1d is connected to the exhaust chamber 102b. The outlet of the air supply chamber 101b near the outlet of the air supply chamber 101b along the first direction is connected to the air supply chamber 101b. The outlet of the exhaust passage 104a near the outlet of the exhaust chamber 102b along the first direction is connected to the exhaust chamber 102b.

[0118] The return air port 1 a is connected to the outside, and is used to introduce indoor airflow into the housing 1 .

[0119] The air outlet 1d is connected to the outside, and is used to lead the indoor air flow in the housing 1 out of the housing 1.

[0120] The fresh air inlet 1c is connected to the outside, and is used to introduce outdoor air into the housing 1.

[0121] The air supply port 1 b is connected to the outside, and is used to lead the outdoor air flow in the housing 1 out of the housing 1 .

[0122] The return air inlet 1a and the fresh air inlet 1c are located on both sides of the heat exchange core 2 along the third direction, and the supply air inlet 1b and the exhaust air inlet 1d are located on both sides of the fan chamber 10b along the third direction.

[0123] In this embodiment, the return air inlet 1a and the fresh air inlet 1c are located on both sides of the heat exchange core 2 along the third direction, and the supply air inlet 1b and the exhaust air inlet 1d are located on both sides of the fan chamber 10b along the third direction. On the one hand, it is convenient to connect the return air inlet 1a, the supply air inlet 1b, the fresh air inlet 1c and the exhaust air inlet 1d to the external air duct to avoid interference between the air duct and the ceiling board and the ceiling, and it can also avoid the problem of over-size caused by forming the above-mentioned air inlets on more than two side walls of the shell 1. On the second hand, the indoor airflow enters the return air channel 101a along the third direction through the return air inlet 1a, and the partition plate 81 plays a guiding role. The indoor airflow from the return air inlet 1a can enter the return air channel 101a without turning at a large angle, such as 90 degrees, thereby reducing the resistance of the indoor airflow during the flow and reducing noise. The outdoor airflow enters the fresh air passage 103a along the third direction through the fresh air outlet 1c, and the isolation plate 82 plays a guiding role. The outdoor airflow from the fresh air outlet 1c can enter the fresh air passage 103a without turning at a large angle, such as 90 degrees, thereby reducing the resistance of the outdoor airflow and reducing noise. In this way, the indoor airflow and the outdoor airflow flow smoothly in the housing 1, which can reduce eddy currents.

[0124] For some examples, see Figure 1 and Figure 2 At least one of the return air port 1a, the supply air port 1b, the fresh air port 1c and the exhaust air port 1d is provided with a connecting flange 10 on its outer side. The connecting flange 10 is used for connecting an external air duct.

[0125] In one embodiment, please refer to Figure 2 , Figure 7 and Figure 8 The partition 8 includes a partition plate 83, a surface of the partition plate 83 is a partial surface of the air supply chamber 101b, one end of the partition plate 83 along the second direction is connected to the partition plate 81, and a portion of the partition plate 83 protrudes toward the direction close to the partition plate 81.

[0126] In this embodiment, the outdoor air flow is concentrated in the air supply chamber 101b and sent to the indoor environment. The air volume of the air supply chamber 101b reaches the maximum. The partition plate 83 is located at the junction of the air supply channel 102a and the air supply chamber 101b. The partition plate 83 partially protrudes toward the direction close to the partition plate 81, which can not only expand the volume of the air supply chamber 101b, thereby increasing the space of the air supply chamber 101b and reducing the wind speed in the air supply chamber 101b, but also reduce local eddies and airflow stagnation areas, improve gas turbulence, and achieve the effect of reducing noise.

[0127] In one embodiment, please refer to Figure 2 , Figure 7 and Figure 8The partition 8 includes an air diffuser 84, a surface of the air diffuser 84 is a partial surface of the exhaust chamber 102b, one end of the air diffuser 84 along the second direction is connected to the isolation plate 82, and the other end of the air diffuser 84 along the second direction extends obliquely in a direction away from the isolation plate 82.

[0128] In this embodiment, the surface of the air diffuser 84 constituting the exhaust chamber 102b may be an inclined plane. The airflow from the exhaust passage 104a may flow smoothly along the inclined plane of the air diffuser 84 toward the first side of the second direction, thereby reducing airflow dead angles and eddy currents. The indoor airflow is concentrated in the exhaust chamber 102b and sent to the outdoor environment, and the air volume of the exhaust chamber 102b reaches the maximum. The air diffuser 84 may expand the volume of the exhaust chamber 102b, thereby increasing the space of the exhaust chamber 102b and reducing the wind speed in the exhaust chamber 102b, thereby achieving the effect of reducing noise.

[0129] One end of the partition plate 81 is connected to the heat exchange core 2, and the other end of the partition plate 81 can be connected to the housing 1, for example, to the return air port 1a. In other words, the partition plate 81 can be connected to the surrounding area of ​​the return air port 1a. For example, the partition plate 81 can be connected to the first side wall 12. For another example, the partition plate 81 can be connected to the connection between the first side wall 12 and the chassis 11. For another example, the partition plate 81 can be connected to the part of the chassis 11 close to the first side wall 12.

[0130] One end of the isolation plate 82 is connected to the heat exchange core 2, and the other end of the isolation plate 82 can be connected to the shell 1. The position where the isolation plate 82 is connected to the shell 1 is not limited. For example, the isolation plate 82 can be connected to the fresh air outlet 1c, that is, the isolation plate 82 can be connected to the surrounding area of ​​the fresh air outlet 1c. In some embodiments, the isolation plate 82 can be connected to the side wall where the fresh air outlet 1c is located, such as the second side wall 13. In some embodiments, the isolation plate 82 can be connected to the connection between the second side wall 13 and the chassis 11. In some embodiments, the isolation plate 82 can be connected to the part of the chassis 11 close to the second side wall 13.

[0131] The partition 8 can be an integrally formed structure, which can save the assembly steps of the partition 8; the integrated partition 8 limits the space inside the outer shell 1 to the heat exchange chamber 10a and the fan chamber 10b, that is, one partition 8 can achieve the limitation of the fan chamber 10b and the heat exchange chamber 10a, which can avoid problems such as misinstallation and missing installation of multiple panels, thereby improving assembly efficiency.

[0132] The material of the partition 8 includes but is not limited to plastics, etc. In some embodiments, the partition 8 can be an integral injection molding structure. The partition 8 is light in weight, and the number of fasteners between the partition plate 81, the isolation plate 82, the partition plate 83, the air diffuser plate 84, and the support body 31 can be reduced, which greatly improves assembly efficiency, reduces weight, and reduces costs.

[0133] In some embodiments, the partition 8 may further include a connecting plate and a sealing plate spaced apart along the first direction, the connecting plate connecting the partition plate 83 and the air diffuser plate 84 , and the sealing plate connecting the partition plate 81 and the isolation plate 82 .

[0134] In one embodiment, please refer to Figure 3 and Figure 5 The connection between the fresh air inlet surface 2b and the exhaust air outlet surface 2d is a second corner 202, and one end of the isolation plate 82 can be connected to the second corner 202. For example, see Figure 2 , Figure 3 and Figure 5 At least one stopper 9 is connected to the isolation plate 82 and can abut against the fresh air inlet surface 2b constituting the second corner 202. The stopper 9 can prevent the heat exchange core 2 from escaping from the housing 1 from the side away from the support seat 3 in the second direction.

[0135] In one embodiment, please refer to Figure 3 and Figure 5 The connection between the return air inlet surface 2a and the supply air outlet surface 2c is a third corner 203, and one end of the partition plate 81 can be connected to the third corner 203. For example, please refer to 2, Figure 3 and Figure 5 At least one stopper 9 is connected to the partition plate 81 and can abut against the return air inlet surface 2a constituting the third corner 203. The stopper 9 can prevent the heat exchange core 2 from escaping from the housing 1 from the side away from the support base 3 in the second direction.

[0136] In one embodiment, please refer to Figure 1 , Figure 3 and Figure 5 The connection between the return air inlet surface 2a and the fresh air inlet surface 2b is a fourth corner 204, and the fourth corner 204 can abut the cover body 14 on the first side of the housing 1 along the second direction.

[0137] In one embodiment, please refer to Figures 2 to 8 The heat exchange core 2 extends along the first direction, the supply air chamber 101b and the exhaust air chamber 102b are located on the same side of the heat exchange core 2 along the first direction, the first side wall 12 of the shell 1 along the third direction forms a return air port 1a and a supply air port 1b, the second side wall 13 of the shell 1 along the third direction forms a fresh air port 1c and an exhaust air port 1d, the return air channel 101a is located on the first side of the supply air channel 102a along the second direction, the fresh air channel 103a is located on the first side of the exhaust air channel 104a along the second direction, the supply air chamber 101b is located on one side of the supply air channel 102a along the first direction, and the exhaust air chamber 102b is located on one side of the exhaust air channel 104a along the first direction.

[0138] The return air channel 101a and the supply air channel 102a are both located on the same side of the heat exchange core 2 along the third direction. The fresh air channel 103a and the exhaust air channel 104a are both located on the same side of the heat exchange core 2 along the third direction. In this way, the sum of the dimensions of the supply air chamber 101b and the exhaust air chamber 102b along the third direction can be close to the sum of the dimensions of the return air channel 101a, the fresh air channel 103a and the heat exchange core 2 along the third direction. The sum of the dimensions of the supply air chamber 101b and the exhaust air chamber 102b along the second direction can be close to the dimension of the heat exchange core 2 along the second 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 outer shell 1, and the dimensions of each air duct in the outer shell 1 are relatively large.

[0139] Regarding indoor air flow: the indoor air flow enters the housing 1 from the return air port 1a, flows along the first air flow path X1 in the housing 1, and then is discharged to the outside from the exhaust port 1d. That is, the first air flow path X1 is the return air path of the indoor air flow (see Figure 2 and Figure 3 ). Specifically: the indoor airflow from the return air port 1a enters the return air channel 101a and flows in a curve toward the first side of the second direction, and enters the heat exchange core 2 through the return air inlet surface 2a and flows to the second side. The indoor airflow after heat exchange enters the exhaust channel 104a through the exhaust air outlet surface 2d, and finally enters the exhaust chamber 102b and is discharged through the exhaust port 1d. The indoor airflow flows linearly during the flow process, with almost no airflow dead angle, smooth air path, and small wind resistance.

[0140] For outdoor air flow: the outdoor air flow enters the housing 1 from the fresh air outlet 1c, flows along the second air flow path X2 in the housing 1, and then is discharged to the room from the air supply outlet 1b. That is, the second air flow path X is the fresh air path of the outdoor air flow (see Figure 2 and Figure 3 ). After the outdoor air from the fresh air outlet 1c enters the fresh air channel 103a, it flows in a curve toward the first side of the second direction, and enters the heat exchange core 2 through the fresh air inlet surface 2b and flows to the second side. The outdoor air after heat exchange enters the air supply channel 102a through the air supply outlet surface 2c, and finally enters the air supply chamber 101b and is discharged through the air supply outlet 1b. The outdoor air flows linearly during the flow process, with almost no airflow dead angle, smooth air path, and small wind resistance.

[0141] In one embodiment, please refer to Figure 3 , Figure 7 and Figure 8 The partition 8 includes two frames 85 , each of which has a vent 85 a formed thereon. The two frames 85 are connected to opposite sides of the support body 31 along the third direction, and the heat exchange core 2 abuts against the two frames 85 .

[0142] The vents 85a are used for air circulation. For example, one of the vents 85a can be communicated with the air supply passage 102a, and the other vent 85a can be communicated with the exhaust passage 104a. The air supply outlet surface 2c faces the vent 85a of one of the frames 85, and the exhaust outlet surface 2d faces the vent 85a of the other frame 85. The outdoor airflow from the air supply outlet surface 2c enters the air supply passage 102a through the vent 85a. The indoor airflow from the exhaust outlet surface 2d enters the exhaust passage 104a through the vent 85a.

[0143] In this embodiment, during the installation of the heat exchange core 2, the heat exchange core 2 slides from the first side of the second direction along the frame 85 to the second side into the opening groove 3a, effectively reducing the difficulty of assembly. The frame 85 can provide support for the heat exchange core 2, so that the heat exchange core 2 can stably maintain its tilted side standing on the chassis 11.

[0144] The shape of the frame 85 is not limited, and the area enclosed by the frame 85 can be a vent 85a. Exemplarily, one of the frames 85 abuts against the air supply outlet surface 2c of the heat exchange core 2, and the outer contour of the air supply outlet surface 2c can be roughly quadrilateral, and the outer contour of the frame 85 can be roughly quadrilateral, and the frame 85 can roughly abut the periphery of the air supply outlet surface 2c. Another frame 85 abuts against the exhaust outlet surface 2d of the heat exchange core 2, and the outer contour of the exhaust outlet surface 2d can be roughly quadrilateral, and the outer contour of the frame 85 can be roughly quadrilateral, and the frame 85 can roughly abut the periphery of the exhaust outlet surface 2d.

[0145] In one embodiment, please refer to Figure 2 , Figure 3 , Figure 7 and Figure 8 The fresh air device includes a stopper 9, one end of the frame 85 along the second direction is connected to the support seat 3, such as the fixing plate 32, and the stopper 9 is arranged at one end of the frame 85 away from the support seat 3 along the second direction, and the stopper 9 abuts against the part of the heat exchange core 2 away from the support seat 3 along the second direction. The stopper 9 can prevent the heat exchange core 2 from escaping from the housing 1 from the first side in the second direction, and the stopper 9, the frame 85 and the support seat 3 can limit the freedom of the heat exchange core 2 in multiple directions, so that the heat exchange core 2 can be stably assembled on the partition 8.

[0146] For example, see Figure 2 , Figure 3 , Figure 7 and Figure 8 There may be multiple stoppers 9 , at least one stopper 9 abuts against the second corner 202 of the heat exchange core 2 , and at least one stopper 9 abuts against the third corner 203 of the heat exchange core 2 .

[0147] The stopper 9 can be detachably connected to the partition 8. For example, it can be screwed or bolted. For example, the stopper 9 can be detachably connected to the partition plate 81, and the stopper 9 can be detachably connected to the isolation plate 82.

[0148] The shape of the stopper 9 is not limited. For example, the stopper 9 may be substantially in the shape of a sheet.

[0149] In the description of the present application, the description with reference to the terms "in one embodiment", "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.

[0150] 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 fresh air device, characterized in that: include: shell; a heat exchange core, located in the shell; The support seat is located in the shell, and the support seat is formed with an open groove extending along the first direction. A side wall of the shell along the second direction is a chassis, and the support seat is arranged on the chassis. Part of the heat exchange core is accommodated in the open groove. The support seat is an integrally formed structure, wherein the first direction is perpendicular to the second direction.

2. The fresh air device according to claim 1, characterized in that: The support seat includes a support body and a fixing plate, the fixing plate abuts against the chassis, the support body is connected to the fixing plate, and the support body forms the open groove.

3. The fresh air device according to claim 1, characterized in that: The support seat includes a support body, and the support body includes a first inclined plate, a second inclined plate and a support plate. A portion of the support plate is recessed in a direction away from the heat exchange core to form the open groove. The first inclined plate and the second inclined plate are respectively connected to two sides of the support plate along a third direction, wherein the first direction, the second direction and the third direction are perpendicular to each other.

4. The fresh air device according to claim 3, characterized in that: The included angle between the first inclined plate and the chassis is 90° to 160°; and / or, The included angle between the second inclined plate and the chassis is 0° to 113°.

5. The fresh air device according to claim 1, characterized in that: The heat exchange core includes a plurality of heat exchange units arranged in sequence along a first direction.

6. The fresh air device according to claim 1, characterized in that: The heat exchange core comprises a first side surface and a second side surface intersecting each other, wherein a connection between the first side surface and the second side surface is a first corner, and the first corner is accommodated in the open groove.

7. The fresh air device according to claim 6, characterized in that: An included angle between the second side surface and the inner surface of the chassis is γ, wherein 15°≤γ≤45°.

8. The fresh air device according to claim 1, characterized in that: The fresh air device includes a guide frame connected to the support base, and the guide frame abuts against one side of the heat exchange core along the third direction, wherein the first direction, the second direction and the third direction are perpendicular to each other.

9. The fresh air device according to claim 8, characterized in that: The guide frame includes a guide plate, which is arranged perpendicular to the first direction and abuts against one side of the heat exchange core along the third direction.

10. The fresh air device according to claim 9, characterized in that: The guide plate is formed with a flow hole.

11. The fresh air device according to claim 9, characterized in that: The guide frame includes a support ear, a connecting plate and a plurality of the guide plates, the plurality of the guide plates are arranged at intervals along the first direction, the connecting plate connects all the guide plates, two support ears are arranged at intervals along the first direction, the two support ears are respectively connected to one guide plate, and the support ears are connected to the support seat.

12. The fresh air device according to claim 1, characterized in that: A heat exchange chamber and a fan chamber are formed in the shell, the heat exchange core and the support seat are both located in the heat exchange chamber, the fresh air device includes a partition plate, the partition plate divides the fan chamber into an air supply chamber and an air exhaust chamber arranged along a third direction, the partition plate includes a bending portion, the bending portion is bent toward the air supply chamber, wherein the first direction, the second direction and the third direction are perpendicular to each other.

13. The fresh air device according to claim 12, characterized in that: The fresh air equipment includes: A fresh air fan is located in the air supply chamber; The exhaust fan is located in the exhaust chamber, and the axes of the fresh air fan and the exhaust fan both extend along the first direction.

14. The fresh air device according to claim 1, characterized in that: The fresh air device includes a partition located in the outer shell, the partition includes a partition plate and an isolation plate, the heat exchange core extends along a first direction, and the circumferential surface of the heat exchange core surrounding the first direction includes a return air inlet surface, a fresh air inlet surface, a second side surface and a first side surface connected in sequence, the connection between the fresh air inlet surface and the second side surface is a second corner, and the connection between the return air inlet surface and the first side surface is a third corner, the partition plate and the isolation plate are respectively located on both sides of the heat exchange core along a third direction, the second corner is connected to the isolation plate, and the third corner is connected to the partition plate, wherein the first direction, the second direction and the third direction are perpendicular to each other.

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