Fresh air equipment

Abstract

The invention 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 field of air conditioning technology, and in particular to a fresh air equipment. BACKGROUND

[0002] This section is intended to provide background or context to the embodiments of the application. The description herein does not constitute admission that the prior art is prior art nor that the prior art is part of the common general knowledge of those working in the field.

[0003] The fresh air equipment can be used to deliver outdoor airflow to indoor and exhaust indoor airflow to outdoor. 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 airflow and outdoor airflow. The heat exchange core is inconvenient to install. SUMMARY

[0004] Therefore, the present application aims to provide a fresh air equipment with a heat exchange core convenient to install.

[0005] The present application provides a fresh air equipment, comprising:

[0006] a shell;

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

[0008] a support seat located in the shell, the support seat is formed with an open slot extending along a first direction, a side wall of the shell along a second direction is a chassis, the support seat is arranged on the chassis, part of the heat exchange core is arranged in the open slot, and the support seat is an integral structure, wherein the first direction and the second direction are perpendicular.

[0009] In some embodiments, the support seat comprises a support body and a fixing sheet, the fixing sheet abuts against the chassis, the support body is connected to the fixing sheet, and the support body forms the open slot.

[0010] In some embodiments, the support seat comprises a support body, the support body comprises a first inclined plate, a second inclined plate and a support plate, part of the support plate is recessed away from the heat exchange core to form the open slot, and 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 included angle between the first inclined plate and the chassis is 90°-160°; and / or,

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

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

[0014] In some embodiments, the heat exchange core includes an intersecting first side and a second side, the connection between the first side and the second side being a first corner, and the first corner being accommodated in the opening groove.

[0015] In some embodiments, the angle between the second side 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, the guide frame abutting against one side of the heat exchange core along a 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 disposed perpendicular to a first direction, the guide plate abutting against one side of the heat exchange core along a third direction.

[0018] In some embodiments, the guide plate has flow holes.

[0019] In some embodiments, the guide frame includes lugs, connecting pieces, and a plurality of guide pieces, the plurality of guide pieces being spaced apart along a first direction, the connecting pieces connecting all the guide pieces, two lugs being spaced apart along the first direction, each of the two lugs being connected to one of the guide pieces, and the lugs being connected to the support base.

[0020] In some embodiments, a heat exchange chamber and a fan chamber are formed within the housing, the heat exchange core and the support base are both located within the heat exchange chamber, the fresh air device includes a partition plate that divides the fan chamber into an air supply chamber and an air exhaust chamber arranged along a third direction, the partition plate includes a bent portion that bends 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] The fresh air fan is located in the air supply room;

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

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

[0025] The fresh air device provided in this application embodiment has a support base for supporting the heat exchange core. The open slot is used to position and limit the heat exchange core, which to a certain extent prevents the heat exchange core from shifting and facilitates assembly and fixing. The support base is a one-piece molded structure, which can save assembly steps; the integrated support base can avoid problems such as misassembly or omission of multiple parts, and improve assembly efficiency. Attached Figure Description

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

[0027] Figure 2 for Figure 1 A structural schematic diagram of the fresh air system from another perspective, omitting the cover. In this diagram, 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 system shown, in which dashed arrows schematically indicate the flow directions of indoor and outdoor airflow;

[0029] Figure 4 This is a schematic diagram of the assembly of a portion of the outer shell and the support base in one embodiment of this application;

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

[0031] Figure 6 This is a schematic diagram of the support base in one embodiment of this application;

[0032] Figure 7 for Figure 1 A schematic diagram of another part of the structure of the fresh air system shown;

[0033] Figure 8 for Figure 1A schematic diagram of a portion of the structure of the fresh air system shown from another perspective;

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

[0035] Explanation of reference numerals in the attached figures

[0036] 1. Outer shell; 1a. Return air inlet; 1b. Supply air outlet; 1c. Fresh air inlet; 1d. Exhaust air outlet; 11. Chassis; 12. First side wall; 13. Second side wall; 14. Cover; 10a. Heat exchange chamber; 101a. Return air duct; 102a. Supply air duct; 103a. Exhaust air duct; 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 2a; fresh air inlet 2b; supply air outlet 2c; exhaust air outlet 2d;

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

[0039] Guide frame 4; positioning hole 4a; guide plate 41; flow hole 41a; support lug 42; connecting piece 43; partition plate 5; bending part 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; stop piece 9; pipe flange 10. Detailed Implementation

[0040] Where there is no conflict, the embodiments and technical features in the embodiments of this application can be combined with each other. The detailed description in the specific implementation should be understood as an explanation of the purpose of this application and should not be regarded as an undue limitation on this application.

[0041] It should be noted that in the embodiments of this application, "down" refers to the direction where the ground is located, and "up" is the opposite of "down"; the first direction, the second direction, and the third direction form a three-dimensional vertical coordinate system that is perpendicular to each other, and the first side of the second direction and the second side of the second direction are two opposite orientations. In the embodiments of this application, the orientation or positional relationship of "first direction," "second direction," and "third direction" is based on the orientation or positional relationship shown in the accompanying drawings. It should be understood that these orientational terms are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] In related technologies, the heat exchange core is installed onto the outer shell through multiple components such as support components and mounting rails. These components are then fixed together as a whole by multiple rivets, and the whole is then fixed to the outer shell by rivets. This process is complex and inefficient. Furthermore, the support components and mounting rails can easily obstruct the airflow of the heat exchange core, increasing wind resistance.

[0043] Please see Figures 1 to 5 This 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 inside the housing 1, and the support base 3 is located inside the housing 1. The support base 3 has an opening groove 3a extending along a first direction. One side wall of the housing 1 along a second direction is a chassis 11, and the support base 3 is disposed on the chassis 11. A portion of the heat exchange core 2 is accommodated in the opening groove 3a. The support base 3 is an integrally formed structure, wherein the first direction and the second direction are perpendicular.

[0044] Indoor airflow is often referred to as return air, and outdoor airflow is often referred to as fresh air. Both indoor and outdoor airflows flow through heat exchange core 2 and exchange heat through it, achieving heat recovery and regulating the temperature and / or humidity of the outdoor airflow entering the indoor environment. The fresh air system performs both fresh air intake and exhaust functions. The fresh air intake function allows fresh outdoor air to enter the room, while the exhaust function removes stale indoor air from the room.

[0045] During the 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 chassis 11, and part of the heat exchange core 2 is inserted into the opening groove 3a, which is simple to operate.

[0046] The fresh air device provided in this application embodiment has a support base 3 for supporting the heat exchange core 2. The opening groove 3a is used to position and limit the heat exchange core 2, which to a certain extent prevents the heat exchange core 2 from shifting and facilitates assembly and fixing. The support base 3 is an integrally molded structure, which can save assembly steps; the integrated support base 3 can avoid problems such as misassembly or omission of multiple parts, and improve assembly efficiency.

[0047] In one embodiment, please refer to Figures 4 to 6 The heat exchange core 2 includes multiple heat exchange units 210 arranged sequentially along a first direction. That is, each heat exchange unit 210 can be disassembled and reassembled into the heat exchange core 2. During the assembly of the heat exchange core 2, the multiple heat exchange units 210 can enter the opening groove 3a one by one and slide within the opening groove 3a along the first direction to complete the arrangement of the multiple heat exchange units 210 along the first direction, reducing the assembly difficulty.

[0048] It is understandable that, taking the plane perpendicular to the first direction as the cross-section, the cross-sectional shape of each heat exchanger unit 210 can be the same and the size can be equal.

[0049] In one embodiment, please refer to Figure 5 and Figure 6 The heat exchange core 2 includes an intersecting first side surface 2' and a second side surface 2'". The connection between the first side surface 2' and the second side surface 2' is a first corner 201, which is accommodated in an 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 outline 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. The heat exchange core 2 is placed on the chassis 11 in an inclined and side-standing posture, which can avoid the chassis 11 from blocking the first side 2' and the second side 2', which facilitates airflow.

[0051] In one embodiment, please refer to Figures 2 to 8 The fresh air equipment includes a partition 8 located inside the housing 1. The partition 8 includes a partition plate 81 and an isolation plate 82. The heat exchange core 2 extends along a 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 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 2' can be the air supply and outlet surface 2c, and the second side 2” can be the air exhaust and outlet surface 2d.

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

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

[0055] Before heat exchange, the outdoor airflow enters the heat exchange core 2 through the fresh air inlet 2b, and after heat exchange, the outdoor airflow exits the heat exchange core 2 through the air outlet 2c.

[0056] Before heat exchange, the indoor airflow enters the heat exchange core 2 through the return air inlet surface 2a, and after heat exchange, the indoor airflow 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 sequentially. In a 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 quadrilateral. That is, with the plane perpendicular to the first direction as the cross-section, the cross-section of the heat exchange core 2 is quadrilateral, for example, it can be a regular quadrilateral. Compared with heat exchange cores with a hexagonal or larger cross-section, the cross-sectional area of ​​the heat exchange core 2 of this application is smaller, and the dimensions of the heat exchange core 2 in the third and second directions are smaller.

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

[0059] In this embodiment, the first corner 201 is accommodated in the opening slot 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 sideways on the chassis 11, and the outdoor airflow after heat exchange from the supply air outlet 2c and the outdoor airflow after heat exchange from the exhaust air outlet 2d are almost not blocked by the chassis 11. Under the limited internal space of the outer shell 1, the smooth airflow in and out of four directions and the effective heat exchange area of ​​the heat exchange core 2 are taken into account, resulting in higher heat exchange efficiency and optimized efficiency per unit volume. It achieves the same enthalpy exchange efficiency as a large model within a limited volume.

[0060] The extension of heat exchange core 2 along the first direction means that airflow enters or exits heat exchange core 2 circumferentially around the first direction. For example, the extension of heat exchange core 2 along the first direction can be achieved by multiple heat exchange medium plates of heat exchange core 2 stacked at intervals along the first direction. The heat exchange medium plates are used for heat exchange between indoor and outdoor airflow. An interval space is formed between two adjacent heat exchange medium plates. Two adjacent interval spaces can respectively allow indoor and outdoor airflow to pass through, and the indoor and outdoor airflows exchange heat through the heat exchange medium plates. That is, indoor and outdoor airflows enter and exit heat exchange core 2 circumferentially around the first direction. The heat exchange medium plates can be used for heat exchange but do not allow airflow.

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

[0062] For example, the support 31 is connected to two fixing plates 32 on both sides along a third direction. In this way, the fixing plates 32 are subjected to more balanced forces, and the center of gravity of the support 3 is more stable.

[0063] In this embodiment, the fixing piece 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 can be detachably connected or non-detachably connected. Detachable connections include, but are not limited to, screw connections or bolt connections, etc.

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

[0066] Fasteners include, but are not limited to, screws or bolts.

[0067] In one embodiment, please refer to Figures 3 to 6 The support base 3 includes a support body 31, which includes a first inclined plate 311, a second inclined plate 312, and a support plate 313. A portion of the support plate 313 is recessed in a direction away from the heat exchange core 2 to form an opening groove 3a. The first inclined plate 311 and the second inclined plate 312 are respectively connected to the two sides of the support plate 313 along a 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 not only provide support for the support plate 313, thereby stabilizing the heat exchange core 2, but also guide the airflow, reducing airflow obstruction in the areas surrounding the first inclined plate 311 and the heat exchange core 2, and in the areas surrounding 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 supply air outlet 2c can flow under the guidance of the first inclined plate 311, reducing dead air angles. The outdoor airflow after heat exchange from the exhaust air outlet 2d can flow under the guidance of the second inclined plate 312, reducing dead air angles, reducing duct resistance, and lowering the overall machine speed and noise.

[0069] In one embodiment, please refer to Figure 3 and Figure 5The 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 of the outdoor airflow out of the heat exchange core 2 is roughly parallel to the first inclined plate 311, and the direction of the indoor airflow out of the heat exchange core 2 is roughly parallel to the second inclined plate 312, making the airflow path smoother.

[0070] In some embodiments, please refer to Figure 6 The first inclined plate 311 is connected to a fixing plate 32 and a support plate 313 at both ends, and the second inclined plate 312 is connected to another fixing plate 32 and a support plate 313 at both ends.

[0071] In one embodiment, please refer to Figure 4 and Figure 5 The included angle β between the first inclined plate 311 and the chassis 11 is 90° to 160°. For example, the included angle β between the first inclined plate 311 and the chassis 11 can be 90°, 100°, 110°, 120°, 130°, 140°, 150°, 155°, or 160°, etc. The fixing plate 32 can be parallel to the chassis 11, and the included angle between the first inclined plate 311 and the fixing plate 32 connected to it is 90° to 160°. The tilt 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 ducts 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°. The heat exchange core 2 is biased towards the second inclined plate 312 to increase the space of the heat exchange core 2 near the first inclined plate 311, thereby increasing the volume of the air ducts near the first inclined plate 311, such as the air supply duct 102a, balancing the volume of the air supply duct 102a and the exhaust duct 104a, so as to take into account the air velocity in the air supply duct and the exhaust duct 104a and reduce noise.

[0072] In one embodiment, please refer to Figure 4 and Figure 5The angle α between the second inclined plate 312 and the chassis 11 is 0° to 113°. For example, the angle α between the second inclined plate 312 and the chassis 11 can be 0°, 10°, 20°, 50°, 80°, 100°, 105°, 110°, or 113°. The fixing plate 32 can be parallel to the chassis 11, and the angle between the second inclined plate 312 and the fixing plate 32 connected to it is 0° to 113°. The tilt 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 ducts 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° to 113°. The heat exchange core 2 is biased towards the second inclined plate 312 to increase the space of the heat exchange core 2 near the first inclined plate 311, thereby increasing the volume of the air duct near the first inclined plate 311, such as the air supply duct 102a, balancing the volume of the air supply duct 102a and the exhaust duct 104a, so as to take into account the air velocity in the air supply duct and the exhaust duct 104a and reduce noise.

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

[0074] The chassis 11 may be made of materials including, but not limited to, metal or plastic. The chassis 11 may be a sheet metal structure. A sheet metal structure is a structure formed by cold working processes such as stamping, shearing, or bending of metal sheets.

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

[0076] For example, the included angle between the first side 2' and the second side 2” can be approximately 90°. Taking a plane perpendicular to the first direction as the cross-section, the heat exchange core 2 has a regular quadrilateral shape.

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

[0078] Understandably, the fresh air motor is used to drive the impeller of the fresh air fan 6. The exhaust fan motor is used to drive the impeller of the exhaust fan 7.

[0079] As an example, the heat exchange core 2 extends along a first direction, with a plane perpendicular to the first direction as its cross-section. The cross-sectional shape of the heat exchange core 2 is a regular quadrilateral. The heat exchange core 2 includes multiple heat exchange medium sheets stacked along the first direction. The angle γ between the second side 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. Compared with the related technologies where heat exchange medium sheets are stacked along a third direction, the number of heat exchange medium sheets in the present application can be increased by about 81%. The volume of the fresh air equipment in the present application is reduced by about 51% compared with the models in the related technologies, but the heat exchange efficiency is higher, achieving unit volume efficiency optimization and achieving the same enthalpy exchange efficiency as larger models within a limited volume.

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

[0081] Taking the first corner 201 of the heat exchange core 2 located in the opening slot 3a as an example, the heat exchange core 2 stands on the support base 3 at an incline. In this embodiment, during the process of inserting the heat exchange core 2 into the opening slot 3a along the second direction, the guide frame 4 guides the heat exchange core 2, 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, preventing the heat exchange core 2 from becoming unstable and falling out of the opening slot 3a. The size of the opening slot 3a can be relatively small to avoid the slot wall of the opening slot 3a from obstructing the heat exchange core 2.

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

[0083] In one embodiment, please refer to Figures 5 to 6 The guide plate 41 has a flow hole 41a. For example, the flow hole 41a can penetrate two opposite sides of the guide plate 41 along a first direction. Airflow can flow through the flow hole 41a, reducing airflow obstruction and also reducing the weight of the guide plate 41.

[0084] In one embodiment, please refer toFigures 3 to 6 The guide frame 4 includes lugs 42, connecting pieces 43, and multiple guide pieces 41. The guide pieces 41 are spaced apart along a first direction. The connecting pieces 43 connect all the guide pieces 41. Two lugs 42 are spaced apart along the first direction, each lug connecting to one guide piece 41. The lugs 42 are connected to the support base 3. This design results in a simple structure, light weight, and good structural strength for the guide frame 4. The small contact area between the guide frame 4 and the heat exchange core 2 reduces obstruction of airflow to the heat exchange core 2, while providing stable support and effective guidance for the heat exchange core 2 through the multiple guide pieces 41.

[0085] The guide frame 4 can be made of materials including, but not limited to, metal or plastic. The guide frame 4 can be a sheet metal structure. A sheet metal structure is a structure formed by cold working processes such as stamping, shearing, or bending of metal sheets.

[0086] In one embodiment, please refer to Figure 6 The support base 3 is provided with multiple guide frames 4 along the first direction.

[0087] The guide frame 4 and the support base 3 can be detachably or non-detachably connected. Non-detachable connections include, but are not limited to, welding, such as spot welding. Detachable connections include, but are not limited to, screw or bolt connections.

[0088] In one embodiment, please refer to Figure 5 and Figure 6 One of the guide frame 4 and the support base 3 has a protrusion 3b, and the other of the guide frame 4 and the support base 3 has a positioning hole 4a, with the protrusion 3b passing through the positioning hole 4a. For example, the lug 42 may have either a protrusion 3b or a positioning hole 4a. The protrusion 3b can be first inserted into the positioning hole 4a, and then the guide frame 4 can be fixed to the support base 3 by welding or screw connection.

[0089] In some embodiments, please refer to Figure 6 The support base 3, for example, the fixing piece 32, can form a limiting hole 3c, and the chassis 11 forms a limiting post, which is inserted into the limiting hole 3c. The limiting post can be inserted into the limiting hole 3c first, and then the support base 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 The outer casing 1 has a heat exchange chamber 10a and a fan chamber 10b. The heat exchange core 2 and the support base 3 are both located in the heat exchange chamber 10a. The fresh air equipment 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 bent portion 51, which bends toward the air supply chamber 101b. 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 in 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 there is no gas flow between the exhaust chamber 102b and the supply chamber 101b.

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

[0093] In this embodiment, the air volume of the exhaust chamber 102b is greater than that of the supply chamber 101b. The bending 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 spacer 5 along the first direction can be formed with a folded edge 52. The folded edge 52 can not only strengthen the rigidity of the spacer 5, but also make contact with the sealing layer, separator 8 and other components on the inner surface of the outer shell for sealing.

[0095] In one embodiment, please refer to Figures 7 to 9 The outer casing 1 includes a first sidewall 12 and a second sidewall 13 opposite to each other along a third direction. The first sidewall 12 is part of the air supply chamber 101b, and the second sidewall 13 is part of the exhaust chamber 102b. The distance between the bent portion 51 and the first sidewall 12 is L1, and the distance between the bent portion 51 and the second sidewall 13 is L2, where 1 < L2 / L1 ≤ 1.5. That is, the ratio of L2 to L1 is greater than 1 and not less than 1.5. For example, L2 / L1 can be 1.1, 1.2, 1.3, or 1.5, etc. On the one hand, the bent portion 51 can avoid indoor airflow from the exhaust duct 104a, avoiding turbulence and chaotic flow, and reducing wind noise by optimizing the volume of the air supply chamber 101b and the exhaust chamber 102b. On the other hand, the bent portion 51 can ensure that the air supply chamber 101b and the exhaust chamber 102b can use a fan of the same size, avoiding increased material costs and difficulties in assembly differentiation.

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

[0097] The fresh air fan 6 drives the flow of fresh air, which means it drives the flow of outdoor air, while the exhaust fan 7 drives the flow of return air, which means it drives the flow of indoor air.

[0098] The larger the radial dimensions of the fresh air fan 6 and the exhaust fan 7, the greater their airflow; conversely, the smaller the radial dimensions of the fresh air fan 6 and the exhaust fan 7, the smaller their airflow. Taking the second direction as consistent with the vertical direction as an example, if the axes of the fresh air fan 6 and the exhaust fan 7 are along the second direction, that is, if the fresh air fan 6 and the exhaust fan 7 are arranged in a horizontal position on the chassis 11 of the outer casing 1, increasing the radial dimensions of the fresh air fan 6 and the exhaust fan 7 would result in an excessively large overall size. If the radial dimensions of the fresh air fan 6 and the exhaust fan 7 are reduced to decrease the overall size, then the airflow of the fresh air fan 6 and the exhaust fan 7 would be too small. In other words, if the radial dimensions of the fresh air fan 6 and the exhaust fan 7 are large, the dimensions of the outer casing 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 whole machine along the first direction, thereby reducing the volume occupied by the fresh air fan 6 and the exhaust fan 7. The structural layout is more reasonable and the overall size of the machine is smaller.

[0100] It is understandable that the axial and radial directions 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 and radial directions 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 fan 7 are centrifugal fans. For example, a centrifugal fan includes a fan housing and an impeller, with the impeller located inside the fan housing. The impeller rotates to drive airflow, and the fan housing acts as a guide. Both the axis of the impeller and the axis of the fan housing can extend along a first direction, thus increasing the radial dimension of the impeller and the fan housing does not substantially increase the dimension along the first direction.

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

[0103] In one embodiment, airflow inlets are formed on both sides of the fan casing along the first direction, and airflow outlets are formed on the circumferential surface of the fan casing surrounding the first direction. Airflow enters the fan casing through the two airflow inlets and then flows out through the airflow outlets.

[0104] The fresh air system provided in this application embodiment can be installed on the ceiling or a suspended ceiling panel. The suspended ceiling panel can divide the indoor space into a ceiling space and a living space. Users conduct daily life in the living space, while the suspended ceiling space is used not only for interior decoration but also for installing other equipment. In one embodiment, the fresh air system is installed within the suspended ceiling space. This way, the fresh air system is hidden within the ceiling space, preventing users from directly observing the entire system and improving visual aesthetics. It is understood that the indoor space includes, but is not limited to, balconies, bathrooms, and kitchens, and can be a large apartment, a small apartment, or other types of production or living environments.

[0105] In this embodiment of the application, when the fresh air equipment is installed on a ceiling or suspended ceiling panel, the second direction is consistent with the vertical 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 outer shell 1 as approximately hexahedral in shape as an example, the second direction can be the thickness direction of the outer shell 1, one of the first direction and the third direction can be the width direction of the outer shell 1, and the other of the first direction and the third direction can be the length direction of the outer shell 1. Taking the fresh air equipment installed in a suspended ceiling space as an example, the vertical dimension of the suspended ceiling space is much smaller than the vertical dimension of the suspended ceiling space along the first direction and the third direction. The thickness direction of the outer shell 1 is along the vertical direction, which facilitates the installation of the fresh air equipment in the suspended ceiling space.

[0106] If the heat exchange core 2 extends along the second direction, that is, multiple heat exchange medium plates are stacked along the second direction, it will greatly increase the thickness of the outer shell 1 in the vertical direction, making it difficult to assemble the whole unit into an installation space with a small vertical dimension. If the size of the heat exchange core 2 in the second direction is reduced in order to accommodate the small vertical dimension of the installation space, it will result in too few heat exchange medium plates or too small spacing, resulting in poor heat exchange effect.

[0107] In this application, the heat exchange core 2 extends along the first direction. In this way, the size of the heat exchange core 2 along the first direction can be large without affecting the thickness of the outer shell 1 along the vertical direction. This allows the thickness of the outer shell 1 along the vertical direction to be designed as needed without affecting the heat exchange efficiency, thus meeting both installation and heat exchange requirements.

[0108] The overall size of the fresh air equipment in the relevant technologies is relatively large and the machine is heavy, which limits the installation space. For example, fresh air equipment is usually only suitable for large houses and / or scenarios with large balcony ceiling space. In addition, the relatively large size of the fresh air equipment in the relevant technologies results in less maintenance space, making it 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 will be reduced, resulting in a decrease in heat exchange efficiency. The drastic change in the air path caused by the reduction in the size of the air duct components leads to 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 related technologies is large. The plates used to isolate the air ducts in the fresh air equipment are flat. The flat plates are usually perpendicular to the chassis of the outer shell. The plates that isolate the air ducts do not have the function of guiding airflow and will also cause the air duct to include many 90° turns, increasing the useless area inside the shell and causing wasted space. The direction of indoor and outdoor airflow is usually curved. Therefore, eddies will appear at the junctions of various plates and chassis, such as at 90° turns, which will affect the heat exchange efficiency and increase the pressure loss of the entire heat exchange process. The obstructed airflow path 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 air exhaust chamber 102b are both located on the same side of the heat exchange core 2 along the first direction. That is to say, the fresh air fan 6 and the exhaust 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 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 fan 7 will each occupy space within the outer casing 1 along the first direction, causing the size of the outer casing 1 along the first direction to increase. However, if the fresh air fan 6 and the exhaust 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 fan 7 will not increase the size of the outer casing 1 along the first direction, resulting in a compact structure for the fresh air fan 6, the exhaust fan 7, and the heat exchange core 2. The fresh air fan 6 and the exhaust fan 7 are arranged along a third direction, making full use of the space of the outer casing 1 along the third direction. By comprehensively considering the space of the outer casing 1 along both the first and third directions, the overall size of the fresh air equipment is reduced, 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 inside the outer 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 divides the heat exchange chamber 10a into a return air channel 101a and a supply air channel 102a, and the isolation plate 82 divides the heat exchange chamber 10a into a fresh air channel 103a and an exhaust air channel 104a.

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

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

[0114] In this embodiment, the partition plate 81 divides a portion of the space within the heat exchange chamber 10a into an independent return air channel 101a and a supply air channel 102a, and the partition plate 82 divides a portion of the space within the heat exchange chamber 10a into an independent fresh air channel 103a and an exhaust air channel 104a, resulting in a simple structure. The length directions of the fresh air channel 103a, exhaust air channel 104a, return air channel 101a, supply air channel 102a, and heat exchange core 2 can all be along the first direction, thus allowing for larger dimensions of the aforementioned air ducts and heat exchange core 2.

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

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

[0117] In one embodiment, please refer to Figure 2 , Figure 3 , Figure 7 and Figure 8 The outer casing 1 has a return air inlet 1a and a supply air inlet 1b formed on its first sidewall 12 along a third direction. The outer casing 1 also has a fresh air inlet 1c and an exhaust air inlet 1d formed on its second sidewall 13 along a third direction. The return air inlet 1a is connected to the return air duct 101a, the fresh air inlet 1c is connected to the fresh air duct 103a, the supply air inlet 1b is connected to the supply air chamber 101b, and the exhaust air inlet 1d is connected to the exhaust air chamber 102b. The outlet of the supply air duct 102a, along a first direction near the supply air chamber 101b, is connected to the supply air chamber 101b. The exhaust air duct 104a, along a first direction near the exhaust air chamber 102b, is connected to the exhaust air chamber 102b.

[0118] Return air vent 1a connects to the outside and is used to introduce indoor airflow into the outer casing 1.

[0119] The exhaust vent 1d is connected to the outside and is used to draw indoor airflow out of the outer casing 1.

[0120] Fresh air inlet 1c connects to the outside and is used to introduce outdoor airflow into the outer casing 1.

[0121] Air outlet 1b is connected to the outside and is used to draw outdoor airflow 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 cavity 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 a third direction, and the supply air inlet 1b and the exhaust air inlet 1d are located on both sides of the fan cavity 10b along a third direction. Firstly, this facilitates the connection of external air ducts to the return air inlet 1a, supply air inlet 1b, fresh air inlet 1c, and exhaust air inlet 1d, avoiding interference between the air ducts and ceiling panels, and also preventing the formation of excessively large air vents on more than two side walls of the outer casing 1. Secondly, indoor airflow enters the return air channel 101a through the return air inlet 1a along a third direction. The partition plate 81 acts as a guide, allowing indoor airflow from the return air inlet 1a to enter the return air channel 101a without making a large angle, such as a 90° turn, thereby reducing resistance during indoor airflow and lowering noise. Outdoor airflow enters the fresh air duct 103a in a third direction through the fresh air inlet 1c. The isolation plate 82 acts as a guide, allowing the outdoor airflow from the fresh air inlet 1c to enter the fresh air duct 103a without making a large turn, such as 90°, thereby reducing the resistance during the flow of outdoor air and reducing noise. In this way, indoor and outdoor airflows flow smoothly within the outer casing 1, reducing eddies.

[0124] In some embodiments, please refer to Figure 1 and Figure 2 At least one of the return air inlet 1a, supply air inlet 1b, fresh air inlet 1c, and exhaust air inlet 1d has a connecting flange 10 on its outer side. The connecting flange 10 is used to connect 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, the surface of which is part of the 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 partition plate 81.

[0126] In this embodiment, outdoor airflow is concentrated in the air supply chamber 101b and then delivered to the indoor environment, maximizing the airflow in the air supply chamber 101b. 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 protrudes towards the partition plate 81, which not only expands 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 reduces local eddies and airflow stagnation areas, improves gas turbulence, and achieves the effect of reducing noise.

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

[0128] In this embodiment, the surface of the diffuser 84 constituting the exhaust chamber 102b can be an inclined plane. Airflow from the exhaust duct 104a can flow smoothly along the inclined plane of the diffuser 84 towards the first side in the second direction, reducing dead air angles and eddies. Indoor airflow is concentrated in the exhaust chamber 102b and then discharged to the outdoor environment, maximizing the airflow in the exhaust chamber 102b. The diffuser 84 can expand the volume of the exhaust chamber 102b, thereby increasing the space within the exhaust chamber 102b, reducing the wind speed within the exhaust chamber 102b, and achieving the effect of noise reduction.

[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 outer casing 1, for example, to the return air vent 1a. That is, the partition plate 81 can be connected to the area surrounding the return air vent 1a. For example, the partition plate 81 can be connected to the first side wall 12. Another example is that the partition plate 81 can be connected to the connection between the first side wall 12 and the chassis 11. Yet another example is that the partition plate 81 can be connected to the part of the chassis 11 near 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 outer casing 1. The location of the isolation plate 82 connected to the outer casing 1 is not limited. For example, the isolation plate 82 can be connected to the fresh air inlet 1c, that is, the isolation plate 82 can be connected to the surrounding area of ​​the fresh air inlet 1c. In some embodiments, the isolation plate 82 can be connected to the side wall where the fresh air inlet 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 near the second side wall 13.

[0131] The separator 8 can be a one-piece molded structure, which can save assembly steps of the separator 8; the one-piece separator 8 defines the space inside the outer shell 1 as the heat exchange chamber 10a and the fan chamber 10b. In other words, one separator 8 can define the fan chamber 10b and the heat exchange chamber 10a, which can avoid problems such as misassembly or omission of multiple plates and improve assembly efficiency.

[0132] The material of the partition 8 includes, but is not limited to, plastic. In some embodiments, the partition 8 may be a one-piece injection molded structure. The partition 8 is lightweight and can reduce the number of fasteners between the partition plate 81, the isolation plate 82, the partition plate 83, the air diffuser 84, and the support body 31, greatly improving assembly efficiency, reducing weight, and lowering costs.

[0133] In some embodiments, the partition 8 may further include a connecting plate and a sealing plate spaced apart along a first direction, the connecting plate connecting the partition plate 83 and the air expansion 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 point between the fresh air inlet surface 2b and the exhaust 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 an example, please refer to [reference needed]. Figure 2 , Figure 3 and Figure 5 At least one stop 9 is connected to the isolation plate 82 and can abut against the fresh air inlet surface 2b forming the second corner 202. The stop 9 can prevent the heat exchange core 2 from detaching from the housing 1 from the side away from the support 3 in the second direction.

[0135] In one embodiment, please refer to Figure 3 and Figure 5 The junction of 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 section 2. Figure 3 and Figure 5 At least one stop 9 is connected to the partition plate 81 and can abut against the return air inlet surface 2a that forms the third corner 203. The stop 9 can prevent the heat exchange core 2 from detaching from the housing 1 from the side away from the support 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 the fourth corner 204, which can abut against the cover 14 of the outer shell 1 along the first side of the second direction.

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

[0138] The return air duct 101a and the supply air duct 102a are both located on the same side of the heat exchange core 2 along a third direction. The fresh air duct 103a and the exhaust air duct 104a are both located on the same side of the heat exchange core 2 along a third direction. Thus, the sum of the dimensions of the supply air chamber 101b and the exhaust air chamber 102b along a third direction is approximately equal to the sum of the dimensions of the return air duct 101a, the fresh air duct 103a, and the heat exchange core 2 along a third direction. The sum of the dimensions of the supply air chamber 101b and the exhaust air chamber 102b along a second direction is approximately equal to the dimension of the heat exchange core 2 along a second direction. Other air ducts can also be designed according to the above principle. Therefore, there are almost no useless areas within the outer casing 1, and the dimensions of each air duct within the outer casing 1 are relatively large.

[0139] Regarding indoor airflow: Indoor airflow enters the casing 1 through the return air vent 1a, flows along the first airflow path X1 within the casing 1, and is then discharged to the outside through the exhaust vent 1d. In other words, the first airflow path X1 is the return air path for the indoor airflow (see [reference]). Figure 2 and Figure 3 Specifically: After entering the return air duct 101a, the indoor airflow from the return air inlet 1a flows in a curved manner to the first side in the second direction, and enters the heat exchange core 2 through the return air inlet surface 2a and flows to the second side. After heat exchange, the indoor airflow enters the exhaust duct 104a through the exhaust outlet surface 2d, and finally enters the exhaust chamber 102b and is discharged through the exhaust outlet 1d. The indoor airflow flows linearly during the process, with almost no dead air angles, smooth airflow path, and low wind resistance.

[0140] Regarding outdoor airflow: Outdoor airflow enters the casing 1 through the fresh air inlet 1c, flows along the second airflow path X2 within the casing 1, and is then discharged into the room through the air outlet 1b. In other words, the second airflow path X is the fresh air path for the outdoor airflow (see [reference]). Figure 2 and Figure 3 Outdoor airflow from fresh air inlet 1c enters fresh air duct 103a and flows in a curved manner to the first side of the second direction. It then enters heat exchange core 2 through fresh air inlet surface 2b and flows to the second side. After heat exchange, the outdoor airflow enters air supply duct 102a through air supply outlet surface 2c and finally enters air supply chamber 101b and is discharged through air supply outlet 1b. The outdoor airflow flows linearly with almost no dead air zones, ensuring smooth airflow and low wind resistance.

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

[0142] Vent 85a is used for airflow. For example, one vent 85a may be connected to the supply air duct 102a, and the other vent 85a may be connected to the exhaust air duct 104a. The supply air outlet 2c faces the vent 85a of one of the frames 85, and the exhaust air outlet 2d faces the vent 85a of the other frame 85. Outdoor airflow from the supply air outlet 2c enters the supply air duct 102a through the vent 85a. Indoor airflow from the exhaust air outlet 2d enters the exhaust air duct 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 in the second direction along the frame 85 into the opening groove 3a, effectively reducing the assembly difficulty. The frame 85 can provide support for the heat exchange core 2, allowing the heat exchange core 2 to be stably held upright on the chassis 11 at an angle.

[0144] The shape of the frame 85 is not limited, and the area enclosed by the frame 85 can be a vent 85a. For example, one frame 85 abuts against the air supply outlet surface 2c of the heat exchange core 2. The outer contour of the air supply outlet surface 2c can be approximately quadrilateral, and the outer contour of the frame 85 can also be approximately quadrilateral, with the frame 85 approximately abutting against the periphery of the air supply outlet surface 2c. The other frame 85 abuts against the exhaust outlet surface 2d of the heat exchange core 2. The outer contour of the exhaust outlet surface 2d can also be approximately quadrilateral, and the outer contour of the frame 85 can also be approximately quadrilateral, with the frame 85 approximately abutting against 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 stop member 9. One end of the frame 85 along the second direction is connected to the support base 3, such as the fixing piece 32. The stop member 9 is located at the end of the frame 85 along the second direction away from the support base 3, and abuts against the portion of the heat exchange core 2 along the second direction away from the support base 3. The stop member 9 can prevent the heat exchange core 2 from detaching from the first side of the second direction from the outer casing 1. The stop member 9, the frame 85, and the support base 3 can restrict the degrees of freedom of the heat exchange core 2 in multiple directions, so that the heat exchange core 2 can be stably assembled on the separator 8.

[0146] For example, please refer to Figure 2 , Figure 3 , Figure 7 and Figure 8 There can be multiple stop members 9, at least one stop member 9 abuts against the second corner 202 of the heat exchange core 2, and at least one stop member 9 abuts against the third corner 203 of the heat exchange core 2.

[0147] The stop member 9 can be detachably connected to the partition member 8. For example, by screws or bolts. For example, the stop member 9 can be detachably connected to the partition plate 81, and the stop member 9 can be detachably connected to the isolation plate 82.

[0148] The shape of the stop 9 is not limited; for example, the stop 9 may be generally sheet-shaped.

[0149] In the description of this application, the use of terms such as "in one embodiment," "in some embodiments," or "exemplary" indicates that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the embodiments of this application. In this application, the illustrative expressions of the above terms do 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. Furthermore, without contradiction, those skilled in the art can combine the different embodiments or examples described in this application, as well as the features of the different embodiments or examples.

[0150] The above description is merely a preferred embodiment of this application and is not intended to limit the application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application are included within the scope of protection of this application.

Claims

1. A fresh air device, characterized in that, include: shell; The heat exchange core is located inside the outer casing; A support base is located inside the outer casing. The support base has an opening groove extending along a first direction. One side wall of the outer casing along a second direction is a chassis. The support base is disposed on the chassis. A portion of the heat exchange core is accommodated in the opening groove. The support base is an integrally formed structure. The first direction and the second direction are perpendicular.

2. The fresh air equipment according to claim 1, characterized in that, 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 opening groove.

3. The fresh air equipment according to claim 1, characterized in that, The support base includes a support body, which 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 opening 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.

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

5. The fresh air equipment according to claim 1, characterized in that, The heat exchange core includes multiple heat exchange units arranged sequentially along a first direction.

6. The fresh air equipment according to claim 1, characterized in that, The heat exchange core includes an intersecting first side and a second side, the connection between the first side and the second side is a first corner, and the first corner is accommodated in the opening groove.

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

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

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

10. The fresh air equipment according to claim 9, characterized in that, The guide plate has flow holes.

11. The fresh air equipment according to claim 9, characterized in that, The guide frame includes a support lug, a connecting piece, and a plurality of guide pieces. The plurality of guide pieces are spaced apart along a first direction. The connecting piece connects all the guide pieces. Two support lugs are spaced apart along the first direction. Each of the two support lugs is connected to one of the guide pieces. The support lugs are connected to the support base.

12. The fresh air equipment according to claim 1, characterized in that, The outer shell has a heat exchange chamber and a fan chamber. The heat exchange core and the support base are both located in the heat exchange chamber. The fresh air equipment includes a partition plate that divides the fan chamber into an air supply chamber and an air exhaust chamber arranged along a third direction. The partition plate includes a bent portion that bends toward the air supply chamber. The first direction, the second direction, and the third direction are perpendicular to each other.

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

14. The fresh air equipment according to claim 1, characterized in that, The fresh air device includes a partition located within the housing. The partition includes a partition plate and an isolation plate. The heat exchange core extends along a first direction. 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. The first direction, the second direction, and the third direction are perpendicular to each other.

Images