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 partition part, the partition part limits part of space in the shell into a heat exchange cavity, and the heat exchange core is located in the heat exchange cavity; the partition piece comprises a partition plate, and the partition plate is connected with the heat exchange core and the shell so as to divide the heat exchange cavity into a fresh air channel and an exhaust channel. The partition plate divides the heat exchange cavity into the fresh air channel and the exhaust channel which are independent of each other, airflow in the fresh air channel and airflow in the exhaust channel do not circulate mutually, the probability that outdoor airflow and indoor airflow are mixed is reduced, the heat exchange effect is improved, the fresh air channel and the exhaust channel are separated through the partition plate, the structure is simple, and cost is low. The overall weight of the fresh air equipment can be reduced to a certain extent by simplifying the isolation plate for limiting the air duct.

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 outdoor airflow and the indoor airflow exchange heat in the heat exchange core, so as to achieve the purpose of introducing fresh air into the room and discharging indoor stale air. There are outdoor airflow and indoor airflow in the shell, and it is necessary to simplify the structure inside the shell to reduce the overall weight of the fresh air equipment, and it is also necessary to limit the air ducts of the outdoor airflow and the indoor airflow in the shell to improve the heat exchange effect. Utility Model Content

[0004] In view of this, the present application hopes to provide a fresh air device, which separates the fresh air channel and the exhaust air channel by an isolation plate and has a simple structure.

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

[0006] shell;

[0007] Heat exchange core;

[0008] A partition, wherein the partition defines a portion of the space within the shell as a heat exchange chamber, wherein the heat exchange core is located within the heat exchange chamber; the partition comprises an isolation plate, wherein the isolation plate connects the heat exchange core and the shell to separate the heat exchange chamber into a fresh air channel and an exhaust air channel.

[0009] In some embodiments, the exhaust channel has an exhaust chamber on one side along the first direction, a fresh air outlet is formed on a side wall of the shell along the second direction, the fresh air channel is located on the first side of the exhaust channel along the third direction, the fresh air outlet is connected to the fresh air channel, and the exhaust chamber is connected to the exhaust channel, wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0010] In some embodiments, the partition includes an air diffusion plate, a surface of the air diffusion plate is a partial surface of the exhaust chamber, one end of the air diffusion plate along the third direction is connected to the isolation plate, and the other end of the air diffusion plate along the third direction extends obliquely away from the isolation plate.

[0011] In some embodiments, an exhaust port is formed on the side wall of the shell along the second direction where the fresh air inlet is located, and the exhaust port is connected to the exhaust chamber. The partition includes a baffle rib located in the exhaust chamber, and the baffle rib is arranged on the side of the air expansion plate away from the exhaust port along the second direction.

[0012] In some embodiments, a plurality of the baffle ribs are spaced apart and distributed along the second direction.

[0013] In some embodiments, the fresh air device includes a fresh air filter located in the fresh air channel, and the isolation plate includes a drainage slope, the drainage slope is located between the fresh air filter and the fresh air outlet, and the drainage slope is inclined toward the fresh air outlet.

[0014] In some embodiments, the partition is formed with a guide groove extending along a third direction, and an end portion of the fresh air filter along the first direction is located in the guide groove.

[0015] In some embodiments, the partition includes a guide rib disposed on the isolation plate, and the guide rib is located on one side of the fresh air filter along the second direction.

[0016] In some embodiments, the housing is formed with an exhaust port, the exhaust port is communicated with the exhaust chamber, and the exhaust port and the fresh air port are located on the same side wall of the housing along the second direction.

[0017] In some embodiments, the shell is formed with a return air inlet and a supply air inlet, and the partition includes a partition plate, which connects the heat exchange core and the return air inlet to separate the heat exchange chamber into a return air channel and a supply air channel, the return air inlet is connected to the return air channel, and the supply air inlet is connected to the supply air channel.

[0018] In some embodiments, the heat exchange core extends along a first direction, and the circumferential surface of the heat exchange core surrounding the first direction includes a fresh air inlet surface and an exhaust air outlet surface, the fresh air inlet surface is a partial surface of the fresh air channel, and the exhaust air outlet surface is a partial surface of the exhaust channel.

[0019] In the fresh air equipment provided in the embodiment of the present application, the isolation plate separates the heat exchange chamber into independent fresh air channels and exhaust channels. The airflows in the fresh air channels and the exhaust channels will not circulate with each other, thereby reducing the probability of mixing of outdoor airflow and indoor airflow and improving the heat exchange effect. The fresh air channel and the exhaust channel are separated by an isolation plate, and the structure is simple. By simplifying the isolation plate that defines the air duct, the overall weight of the fresh air equipment can be reduced to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of a fresh air device in one embodiment of the present application;

[0021] Figure 2 for Figure 1 The fresh air device shown is a schematic diagram from another perspective with some structures omitted, wherein the first airflow path X1 is an indoor airflow path, and the second airflow path X2 is an outdoor airflow path;

[0022] 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;

[0023] Figure 4 for Figure 1 Schematic diagram of part of the structure of the new wind equipment;

[0024] Figure 5 It is a schematic diagram of the structure of a separator in one embodiment of the present application;

[0025] Figure 6 for Figure 5 Schematic diagram of the structure of the middle separator from another perspective.

[0026] Description of Reference Numerals

[0027] Shell 1; fresh air inlet 1a; exhaust air outlet 1b; return air inlet 1c; air supply outlet 1d; chassis 11; first side wall 12; second side wall 13; cover 14; heat exchange chamber 10a; fresh air channel 101a; exhaust air channel 102a; return air channel 103a; air supply channel 104a; fan chamber 10b; air supply chamber 101b; exhaust air chamber 102b;

[0028] Heat exchange core 2; fresh air inlet surface 2a; exhaust air outlet surface 2b; return air inlet surface 2c; supply air outlet surface 2d;

[0029] Partition 3; guide groove 3a; partition plate 31; drainage slope 31a; support surface 31b; air expansion plate 32; baffle rib 33; guide rib 34; partition plate 35; connecting plate 36; sealing plate 37;

[0030] Fresh air filter 4; partition plate 5; fresh air fan 6; exhaust fan 7; connecting flange 8. DETAILED DESCRIPTION

[0031] 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.

[0032] 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 third direction and the second side of the third 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.

[0033] See also Figures 1 to 6 The embodiment of the present application provides a fresh air device, which includes a housing 1, a heat exchange core 2 and a partition 3. The partition 3 defines a part of the space in the housing 1 as a heat exchange cavity 10a, and the heat exchange core 2 is located in the heat exchange cavity 10a; the partition 3 includes an isolation plate 31, which connects the heat exchange core 2 and the housing 1 to separate the heat exchange cavity 10a into a fresh air channel 101a and an exhaust air channel 102a. The two surfaces of the isolation plate 31 in the thickness direction are part of the surface of the fresh air channel 101a and part of the surface of the exhaust air channel 102a.

[0034] Indoor airflow is usually called return air, and outdoor airflow is usually called fresh air. The fresh air device realizes fresh air function and exhaust function. The indoor airflow and the outdoor airflow exchange heat with the heat exchange core 2 in the heat exchange cavity 10a. 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.

[0035] The fresh air passage 101a is used to transport outdoor air to the heat exchange core 2, that is, the fresh air passage 101a is used to transport outdoor air before heat exchange. The exhaust air passage 102a is used to transport indoor air from the heat exchange core 2, that is, the exhaust air passage 102a is used to transport indoor air after heat exchange.

[0036] The fresh air channel 101a and the exhaust channel 102a are independent of each other, that is, the outdoor airflow in the fresh air channel 101a does not enter the exhaust channel 102a, the indoor airflow in the exhaust channel 102a does not enter the fresh air channel 101a, and no gas flows between the fresh air channel 101a and the exhaust channel 102a.

[0037] The indoor airflow and the outdoor airflow exchange heat in the heat exchange core 2 to achieve heat recovery and adjust the temperature and / or humidity of the outdoor airflow entering the room.

[0038] In the fresh air device provided in the embodiment of the present application, the isolation plate 31 separates the heat exchange chamber 10a into independent fresh air channel 101a and exhaust channel 102a. The airflows in the fresh air channel 101a and the exhaust channel 102a will not circulate with each other, thereby reducing the probability of mixing of outdoor airflow and indoor airflow and improving the heat exchange effect. The fresh air channel 101a and the exhaust channel 102a are separated by an isolation plate 31, and the structure is simple. By simplifying the isolation plate 31 that defines the air duct, the overall weight of the fresh air device can be reduced to a certain extent.

[0039] 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.

[0040] When the fresh air device provided in the embodiment of the present application is installed on the ceiling or ceiling board, the third direction is consistent with the up-down direction, the first side of the third direction can be the bottom, and the second side of the third direction can be the top. Taking the shell 1 as an example of being roughly hexahedral, the third direction can be the thickness direction of the shell 1, one of the first direction and the second direction can be the width direction of the shell 1, and the other of the first direction and the second direction can be the length direction of the shell 1. Taking the installation of the fresh air device 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 second direction, and the thickness direction of the shell 1 is along the up-down direction, which can avoid the problem that the fresh air device is difficult to install in the ceiling space.

[0041] 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.

[0042] In one embodiment of the present application, please refer to Figures 2 to 4 , the exhaust passage 102a has an exhaust chamber 102b on one side along the first direction, a side wall of the housing 1 along the second direction is formed with a fresh air port 1a, the fresh air passage 101a is located on the first side of the exhaust passage 102a along the third direction, the fresh air port 1a is connected to the fresh air passage 101a, and the exhaust chamber 102b is connected to the exhaust passage 102a, wherein the first direction, the second direction and the third direction are perpendicular to each other. Specifically, the exhaust passage 102a is connected to the exhaust chamber 102b at an outlet close to the exhaust chamber 102b along the first direction.

[0043] Taking the third direction being consistent with the up-down direction as an example, the fresh air passage 101a and the exhaust air passage 102a are distributed along the up-down direction, and the fresh air passage 101a may be located at the lower side of the exhaust air passage 102a.

[0044] The fresh air outlet 1a connects the outside and the fresh air passage 101a, and the fresh air outlet 1a is used to introduce outdoor air into the fresh air passage 101a.

[0045] The two surfaces of the isolation plate 31 in the thickness direction are respectively partial surfaces of the fresh air channel 101a and partial surfaces of the exhaust channel 102a. The outdoor air enters the fresh air channel 101a along the second direction, and the outdoor air flows along the surface of the isolation plate 31 toward the first side. The isolation plate 31 plays a guiding role.

[0046] In this embodiment, the outdoor air flows into the fresh air channel 101a through the fresh air port 1a and flows to the heat exchange core 2, and the indoor air flow from the heat exchange core 2 flows into the exhaust chamber 102b through the exhaust channel 102a. The fresh air channel 101a and the exhaust channel 102a are distributed along the third direction, which can reduce the size occupied by the fresh air channel 101a and the exhaust channel 102a arranged along the second direction or arranged along the first direction. The exhaust chamber 102b is located on one side of the exhaust channel 102a along the first direction. The sum of the sizes of the fresh air channel 101a and the exhaust channel 102a in the third direction can be approximately equal to the size of the exhaust chamber 102b in the third direction. The fresh air channel 101a, the exhaust channel 102a and the exhaust chamber 102b are arranged in two directions respectively. In this way, without increasing the overall size of the housing 1 or the overall size of the housing 1 is relatively small, the volume of the fresh air channel 101a, the exhaust channel 102a and the exhaust chamber 102b can be larger, and the resistance on the air flow path can be smaller. The outdoor airflow enters the fresh air passage 101a along the second direction, and flows toward the heat exchange core 2 along the surface of the isolation plate 31. The isolation plate 31 plays a guiding role, and the outdoor airflow from the fresh air outlet 1a can enter the fresh air passage 101a without a large angle, such as a 90° turn, thereby reducing the resistance of the outdoor airflow and reducing noise. The indoor airflow flows roughly along the first direction in the exhaust passage 102a and enters the exhaust chamber 102b. In this way, the indoor airflow does not need to turn 90°, the wind path is smooth, the wind resistance is small, and the loss is small.

[0047] For ease of description, two side walls of the housing 1 opposite to each other along the second direction are defined as a first side wall 12 and a second side wall 13, for example, see Figure 4 , the fresh air outlet 1a can be formed on the second side wall 13.

[0048] For some examples, see Figure 4 , the side wall of the second side of the housing 1 along the third direction is the bottom plate 11. That is, the bottom plate 11 can face upward, that is, toward the ceiling.

[0049] For some examples, see Figure 1 and Figure 2 The side wall of the first side of the housing 1 along the third direction may be a cover 14, and an inspection panel may be provided on the outer side of the cover 14. In this way, the cover 14 is formed with a take-in opening, and the inspection panel is used to open or cover the take-in opening, so that the operator can open the inspection panel from below and take out the components in the housing 1, such as the fresh air filter 4, through the take-in opening to inspect the components in the housing 1.

[0050] The position where the isolation plate 31 is connected to the housing 1 is not limited. For example, the isolation plate 31 can be connected to the fresh air outlet 1a, that is, the isolation plate 31 can be connected to the surrounding area of ​​the fresh air outlet 1a. In some embodiments, the isolation plate 31 can be connected to the side wall where the fresh air outlet 1a is located, such as the second side wall 13. In some embodiments, the isolation plate 31 can be connected to the connection between the second side wall 13 and the chassis 11. In some embodiments, the isolation plate 31 can be connected to the part of the chassis 11 close to the second side wall 13.

[0051] For some examples, see Figures 1 to 4 The housing 1 is formed with an exhaust port 1b, which is connected to the exhaust chamber 102b, and the exhaust port 1b and the fresh air port 1a are located on the same side wall of the housing 1 along the second direction. For example, the exhaust port 1b and the fresh air port 1a are both formed on the second side wall 13 of the housing 1.

[0052] The exhaust port 1 b is in communication with the outside and the exhaust chamber 102 b , and the exhaust port 1 b is used to lead the indoor air flow in the housing 1 out of the housing 1 .

[0053] In this embodiment, the indoor air flow in the exhaust chamber 102b is discharged to the outside through the exhaust port 1b to achieve the exhaust function. The exhaust port 1b and the fresh air port 1a are located on the same side wall of the housing 1 along the second direction, which can avoid the exhaust port 1b and the fresh air port 1a being located on two different side walls of the housing 1, thereby increasing the size of the whole machine.

[0054] See also Figure 2 The exhaust chamber 102b is used to install the exhaust fan 7. The exhaust fan 7 drives the return air to flow, that is, drives the indoor air flow.

[0055] In some embodiments, the exhaust fan 7 is a centrifugal fan.

[0056] Exemplarily, in one embodiment, 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 role of guiding the airflow. The axis of the wind wheel and the axis of the fan housing can both 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.

[0057] In one embodiment, the fan casing is a volute casing.

[0058] 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.

[0059] For ease of description, the fan casing of the exhaust fan 7 is defined as an exhaust casing. In one embodiment, an air flow inlet of the exhaust casing faces the outlet of the exhaust passage 102a, and the air flow outlet of the exhaust casing is connected to the exhaust port 1b. The air flow in the exhaust chamber 102b enters the exhaust casing through the two air flow inlets of the exhaust casing, and then flows out to the exhaust port 1b through the air flow outlet. The length direction of the exhaust passage 102a extends along the first direction, and the air flow in the exhaust passage 102a converges to the exhaust chamber 102b along the first direction, and then enters the exhaust casing along the first direction, which can reduce large angles such as 90° turns during the flow of outdoor air flow, thereby reducing wind resistance, reducing eddy currents, and reducing noise.

[0060] In one embodiment, the air outlet of the exhaust fan housing is aligned and connected to the exhaust port 1b. That is, the air outlet of the exhaust fan housing is similar in size and shape to the exhaust port 1b. With the plane perpendicular to the second direction as the projection plane, the projection of the air outlet of the exhaust fan housing at least partially overlaps with the projection of the exhaust port 1b.

[0061] In one embodiment, taking the plane perpendicular to the first direction as the projection plane, the projection of the air inlet of the exhaust housing toward the exhaust passage 102a and the projection of the outlet of the exhaust passage 102a at least partially overlap, thereby reducing wind resistance.

[0062] In one embodiment, please refer to Figure 2 , Figure 4 and Figure 5 The partition 3 includes an air diffuser 32, the surface of the air diffuser 32 is a part of the surface of the exhaust chamber 102b, one end of the air diffuser 32 along the third direction is connected to the isolation plate 31, and the other end of the air diffuser 32 along the third direction is inclined and extends in a direction away from the isolation plate 31. In other words, the other end of the air diffuser 32 along the third direction is inclined in a direction close to the exhaust fan 7.

[0063] In this embodiment, the air diffuser 32 constitutes a part of the exhaust chamber 102b, and the surface of the air diffuser 32 facing the exhaust chamber 102b is a part of the exhaust chamber 102b. The surface of the air diffuser 32 constituting the exhaust chamber 102b can be an inclined plane. The airflow from the exhaust passage 102a can flow smoothly along the inclined plane of the air diffuser 32 toward the first side of the third direction, reducing the airflow dead angle and reducing the vortex. The indoor airflow is concentrated in the exhaust chamber 102b and sent to the outdoor environment. The air volume of the exhaust chamber 102b reaches the maximum. The air diffuser 32 can expand the volume of the exhaust chamber 102b, thereby increasing the space of the exhaust chamber 102b, reducing the airflow dead angle of the exhaust chamber 102b along the first side of the third direction, and reducing the wind speed in the exhaust chamber 102b, thereby achieving the effect of reducing noise.

[0064] In one embodiment, please refer to Figures 2 to 6The side wall of the housing 1 where the fresh air outlet 1a is located along the second direction is formed with an exhaust port 1b, and the exhaust port 1b is connected to the exhaust chamber 102b. The partition 3 includes a baffle rib 33 located in the exhaust chamber 102b, and the baffle rib 33 is arranged on the side of the air expansion plate 32 away from the exhaust port 1b along the second direction. The area in the exhaust chamber 102b away from the exhaust port 1b along the second direction is prone to become a dead zone. After the airflow enters the dead zone, turbulence is formed. The baffle rib 33 is used to block the airflow from entering the dead zone, which can effectively improve the airflow and play a rectifying role, further reducing the speed of the exhaust motor used to drive the exhaust fan 7 and reducing noise.

[0065] In one embodiment, please refer to Figures 5 and 6 The plurality of baffle ribs 33 are spaced apart along the second direction. The plurality of baffle ribs 33 can improve the reliability of blocking the airflow.

[0066] In the embodiment of the present application, a plurality includes a number of two and more than two.

[0067] In one embodiment, please refer to Figure 5 , the length of the plurality of baffle ribs 33 along the third direction increases from the direction close to the air diffuser 32 to the direction away from the air diffuser 32. In this way, the baffle ribs 33 close to the air diffuser 32 have a shorter length along the third direction to avoid blocking the airflow discharged from the exhaust passage 102a; the baffle ribs 33 away from the air diffuser 32 have a longer length along the third direction to better block the airflow from continuing to spread in the direction away from the exhaust port 1b.

[0068] The shape of the baffle rib 33 is not limited. For example, in one embodiment, please refer to Figure 6 The baffle rib 33 has a sheet-like structure.

[0069] In one embodiment, the distance between the baffle rib 33 closest to the air diffuser 32 and the air diffuser 32 may be 20 mm to 50 mm. For example, the distance between the baffle rib 33 closest to the air diffuser 32 and the air diffuser 32 may be 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 45 mm, or 50 mm, etc.

[0070] It will be appreciated that the unit "mm" means millimeter.

[0071] In one embodiment, the size of the baffle rib 33 along the first direction may be 10 mm-15 mm. The size of the baffle rib 33 along the first direction may be 10 mm, 12 mm or 15 mm, etc. In this way, the chaotic airflow is effectively blocked, the fan speed can be reduced by about 100 revolutions, and the noise can be reduced by about 2 dB (decibels).

[0072] In one embodiment, please refer to Figures 2 to 5The fresh air device includes a fresh air filter 4 located in the fresh air passage 101a, and the isolation plate 31 includes a drainage slope 31a, the drainage slope 31a is located between the fresh air filter 4 and the fresh air outlet 1a, and the drainage slope 31a is inclined toward the fresh air outlet 1a. In other words, the angle between the drainage slope 31a and the plane where the fresh air outlet 1a is located is approximately an acute angle.

[0073] If the drainage slope 31a is parallel to the third direction, that is, the drainage slope 31a is parallel to the plane where the fresh air outlet 1a is located, the isolation plate 31 is easy to block the fresh air outlet 1a, causing the flow cross-sectional area of ​​the fresh air outlet 1a to become smaller, thereby increasing the pressure loss and reducing the air volume.

[0074] In the present application, the angle between the drainage slope 31a and the plane where the fresh air outlet 1a is located is an acute angle, which can prevent the isolation plate 31 from blocking the fresh air outlet 1a, and maximize the flow cross-sectional area of ​​the fresh air outlet 1a; the outdoor air flow from the fresh air outlet 1a can also flow to the fresh air filter 4 under the guidance of the drainage slope 31a, avoiding the outdoor air flow from being blocked and generating vortices near the fresh air outlet 1a, reducing wind resistance and making the wind path smooth.

[0075] It should be noted that the flow cross section refers to a cross section perpendicular to a streamline cluster, such as an airflow.

[0076] In some embodiments, the fresh air filter 4 can be fixed on the partition 3. In this way, the partition 3 can not only be used to define the air duct, but also be used to fix the fresh air filter 4.

[0077] In one embodiment, please refer to Figures 4 to 6 The partition 3 is formed with a guide groove 3a extending along the third direction, and the end of the fresh air filter 4 along the first direction is located in the guide groove 3a. Exemplarily, the fresh air filter 4 can be inserted into the guide groove 3a from the third direction to complete the positioning and assembly of the fresh air filter 4, which is simple to operate.

[0078] In this embodiment, the guide groove 3a is located in the fresh air channel 101a, and the groove wall of the guide groove 3a can limit the end of the fresh air filter 4 along the first direction, playing a limiting role. The fresh air outlet 1a is located on one side of the fresh air filter 4 along the second direction, so that the outdoor air from the fresh air outlet 1a flows through the fresh air filter 4.

[0079] In some embodiments, a guide groove 3a is formed on at least one side surface of the fresh air passage 101a along the first direction.

[0080] In some embodiments, the fresh air device includes a buckle arranged on the partition 3, and the buckle is snap-connected with the fresh air filter 4.

[0081] In some embodiments, the buckle includes two elastic arms disposed in the guide groove 3a, and the two elastic arms are located on both sides of the thickness direction of the fresh air filter 4 to clamp the fresh air filter 4. In this way, the fresh air filter 4 is inserted into the guide groove 3a along the third direction to a preset position, and the elastic arms clamp the fresh air filter 4 to complete the fixed installation of the fresh air filter 4, which is simple to operate and convenient for loading and unloading the fresh air filter 4.

[0082] For some examples, see Figure 4 and Figure 6 The partition 3 includes a guide rib 34 disposed on the isolation plate 31, and the guide rib 34 is located on one side of the fresh air filter 4 along the second direction. Exemplarily, during the process of assembling the fresh air filter 4 to the partition 3, the fresh air filter 4 is inserted into the guide groove 3a along the third direction, and as the fresh air filter 4 gradually approaches the guide rib 34, the guide rib 34 abuts against the fresh air filter 4 to prevent the fresh air filter 4 from being offset and misaligned at a portion close to the isolation plate 31 along the third direction.

[0083] In one embodiment, two guide ribs 34 are arranged at intervals along the second direction to form a clamping groove having an inlet and an outlet, the clamping groove includes an enlarged section connected to the inlet and the outlet, the size of the enlarged section decreases from close to the inlet and the outlet to the direction away from the inlet and the outlet, and the fresh air filter 4 enters and exits the clamping groove through the inlet and the outlet and the enlarged section. The enlarged section can reduce the difficulty of assembling the fresh air filter 4, so that the fresh air filter 4 can enter the clamping groove more easily.

[0084] The fresh air filter 4 can be used to filter the airflow to improve the cleanliness of the airflow. The functions of the fresh air filter 4 include but are not limited to removing dust, microorganisms and / or harmful gases in the air. The fresh air filter 4 can filter impurities such as dust, hair or paper scraps carried by the outdoor airflow. The particle size of the impurities is not limited. For example, the particle size of the impurities includes but is not limited to PM1.0, PM2.5, PM10 and other particle sizes.

[0085] The fresh air filter 4 may include a primary filter, which is mainly used to filter impurities larger than 5 μm (micrometers).

[0086] The fresh air filter 4 may include a high-efficiency filter. The high-efficiency filter can achieve the effects of adsorbing PM2.5 and / or removing odors. The high-efficiency filter includes but is not limited to HEPA (High Efficiency Particulate Air Filter) and / or HAF (High Air Flow, ultra-large flow electrostatic filter).

[0087] The number of fresh air filters 4 may be one or more, for example, the number of fresh air filters 4 may be two or three, and so on.

[0088] In one embodiment, the two fresh air filters 4 include a primary filter and a high efficiency filter, and the high efficiency filter is located on the side of the primary filter away from the fresh air outlet 1a. The fresh air from the fresh air outlet 1a first flows through the primary filter and then flows through the high efficiency filter.

[0089] In one embodiment, please refer to Figure 3 and Figure 6 The isolation plate 31 includes a supporting surface 31b, which is perpendicular to the third direction, and one end of the fresh air filter 4 along the third direction abuts against the supporting surface 31b. The guide groove 3a can be located on one side of the supporting surface 31b along the first direction, and the supporting surface 31b is used to carry the fresh air filter 4, so as to avoid air leakage through the gap between the fresh air filter 4 and the supporting surface 31b.

[0090] For some examples, see Figure 2 , Figure 3 and Figure 5 The housing 1 is formed with a return air port 1c and an air supply port 1d, and the partition 3 includes a partition plate 35, which is connected to the heat exchange core 2 and the return air port 1c to separate the heat exchange chamber 10a into a return air channel 103a and an air supply channel 104a, the return air port 1c is connected to the return air channel 103a, and the air supply port 1d is connected to the air supply channel 104a. The two surfaces of the partition plate 35 in the thickness direction are part of the surface of the return air channel 103a and part of the surface of the air supply channel 104a.

[0091] The return air port 1c is connected to the outside and the return air passage 103a, and is used to introduce the indoor airflow into the housing 1. The supply air port 1d is connected to the outside and the supply air passage 104a, and is used to lead the outdoor airflow in the housing 1 out of the housing 1.

[0092] The return air channel 103a is used to transport indoor air to the heat exchange core 2, that is, the return air channel 103a is used to transport indoor air before heat exchange. The supply air channel 104a is used to transport outdoor air from the heat exchange core 2, that is, the supply air channel 104a is used to transport outdoor air after heat exchange.

[0093] The return air duct 103a and the supply air duct 104a are independent of each other, that is, the indoor airflow in the return air duct 103a does not enter the supply air duct 104a, the outdoor airflow in the supply air duct 104a does not enter the return air duct 103a, and no gas flows between the return air duct 103a and the supply air duct 104a.

[0094] In this embodiment, the partition plate 35 separates part of the space in the heat exchange chamber 10a into a return air channel 103a and an air supply channel 104a which are independent of each other. The airflows in the return air channel 103a and the air supply channel 104a will not circulate with each other, thereby reducing the probability of mixing of the outdoor airflow and the indoor airflow, thereby improving the heat exchange effect. The return air channel 103a and the air supply channel 104a are separated by a partition plate 35, and the structure is simple.

[0095] For some examples, see Figures 2 to 4 The heat exchange core 2 extends along the first direction, and the circumferential surface of the heat exchange core 2 surrounding the first direction includes a fresh air inlet surface 2a and an exhaust air outlet surface 2b, the fresh air inlet surface 2a is a partial surface of the fresh air channel 101a, and the exhaust air outlet surface 2b is a partial surface of the exhaust channel 102a.

[0096] 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.

[0097] The fresh air inlet surface 2a is the surface where the outdoor air flows into the heat exchange core 2. The exhaust air outlet surface 2b is the surface where the indoor air flows out of the heat exchange core 2. The outdoor air in the fresh air passage 101a enters the heat exchange core 2 through the fresh air inlet surface 2a, and the indoor air from the heat exchange core 2 enters the exhaust air passage 102a through the exhaust air outlet surface 2b.

[0098] In this embodiment, the fresh air inlet surface 2a is a part of the surface of the fresh air channel 101a, and the exhaust air outlet surface 2b is a part of the surface of the exhaust air channel 102a, so as to facilitate the air flow between the air channel and the heat exchange core 2 and reduce obstruction.

[0099] For some examples, see Figure 2 and Figure 4 The partition 3 defines the space in the housing 1 as a heat exchange chamber 10a and a fan chamber 10b. The partition 3 divides the space in the housing 1 to define an air duct in the housing 1.

[0100] For some examples, see Figure 2 and Figure 4The fan chamber 10b includes an air supply chamber 101b and an air exhaust chamber 102b which are independent of each other, the air exhaust passage 102a is connected to the air exhaust chamber 102b, and the air supply passage 104a is connected to the air supply chamber 101b.

[0101] The air supply chamber 101b is used to install the fresh air fan 6. The fresh air fan 6 drives the fresh air to flow, that is, drives the outdoor air flow.

[0102] The air supply chamber 101b and the exhaust chamber 102b are independent of each other, that is, the indoor air flow in the exhaust chamber 102b does not enter the air supply chamber 101b, the outdoor air flow in the air supply chamber 101b does not enter the exhaust chamber 102b, and there is no gas circulation between the air supply chamber 101b and the exhaust chamber 102b.

[0103] In this embodiment, for indoor airflow: the indoor airflow enters the return air channel 103a through the return air port 1c and enters the heat exchange core 2. After heat exchange, the indoor airflow enters the exhaust air channel 102a and the exhaust air chamber 102b in sequence, and is discharged to the outside through the exhaust air port 1b. For outdoor airflow: the outdoor airflow enters the fresh air channel 101a through the fresh air port 1a and enters the heat exchange core 2. After heat exchange, the outdoor airflow enters the supply air channel 104a and the supply air chamber 101b in sequence, and is discharged to the room through the supply air port 1d.

[0104] For some examples, see Figure 2 and Figure 4 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 that are independent of each other.

[0105] The partition plate 5 can be fixed to at least one of the partition 3 and the housing 1. The fixing method includes but is not limited to a detachable connection and a non-detachable connection. For example, the partition plate 5 and the partition 3 can be connected by a fastener; the partition plate 5 and the housing 1 can be connected by a fastener.

[0106] In the embodiment of the present application, the fasteners include but are not limited to screws or bolts, etc.

[0107] For some examples, see Figure 2 and Figure 4 , the heat exchange core 2 extends along the first direction, the air supply chamber 101b and the exhaust chamber 102b are arranged along the second direction, and 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 second direction, and are both located on the same side of the heat exchange core 2 along the first direction. The fan chamber 10b and the heat exchange core 2 are roughly T-shaped, so that the air flow in the housing 1 is smoother, achieving the effects of large air volume, low energy consumption and quietness.

[0108] In this embodiment, if the air supply chamber 101b and the exhaust chamber 102b are located on different sides of the heat exchange core 2 along the first direction, the air supply chamber 101b and the exhaust chamber 102b respectively occupy the space in the shell 1 along the first direction, causing the size of the shell 1 along the first direction to increase; while 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, the air supply chamber 101b and the exhaust chamber 102b will not increase the size of the shell 1 along the first direction respectively, and the air supply chamber 101b, the exhaust chamber 102b and the heat exchange core 2 have a compact structure. The air supply chamber 101b and the exhaust chamber 102b are arranged along the second direction, making full use of the space of the shell 1 along the second direction, and comprehensively considering the space of the shell 1 along the first direction and the second direction, thereby reducing the overall size of the fresh air device and meeting the miniaturization requirements.

[0109] If the heat exchange core 2 extends along the third direction, that is, multiple heat exchange medium sheets are stacked along the third direction, the thickness of the housing 1 along 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 along the vertical direction. If the size of the heat exchange core 2 along the third direction is reduced in order to adapt to the installation space with a smaller size along 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.

[0110] 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.

[0111] In one embodiment, please refer to Figures 2 to 4 , the air supply chamber 101b is located on one side of the air supply channel 104a along the first direction. Specifically, the air supply channel 104a is connected to the air supply chamber 101b near the outlet of the air supply chamber 101b along the first direction. The outdoor airflow flows roughly along the first direction in the air supply channel 104a and enters the air supply chamber 101b. In this way, the outdoor airflow does not need to turn 90 degrees, the wind path is smooth, the wind resistance is small, and the loss is small.

[0112] In one embodiment, please refer to Figure 2 , the axis of the fresh air fan 6 and the axis of the exhaust air fan 7 both extend along the first direction.

[0113] 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 third direction as an example, if the axes of the fresh air fan 6 and the exhaust air fan 7 are along the third direction, that is, the fresh air fan 6 and the exhaust air fan 7 are arranged on the chassis 11 of the housing 1 along the third direction 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 will be too small. In other words, if the fresh air fan 6 and the exhaust air fan 7 are arranged in a lying manner on the chassis 11 of the casing 1 along the third direction, when the radial dimensions of the fresh air fan 6 and the exhaust air fan 7 are large, the dimensions along the first direction will be excessively increased, which is not conducive to product miniaturization.

[0114] 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, that is, the fresh air fan 6 and the exhaust fan 7 are arranged in a vertical manner on the chassis 11 of the outer casing 1 along the third direction. When the fresh air fan 6 and the exhaust fan 7 have larger radial dimensions, the fresh air fan 6 and the exhaust fan 7 will not excessively increase the size of the whole machine along the first direction, reduce the volume occupied by the fresh air fan 6 and the exhaust fan 7, make the structural layout more reasonable, and make the whole machine smaller.

[0115] 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.

[0116] In some embodiments, both the fresh air fan 6 and the exhaust air fan 7 are centrifugal fans. The specific structure of the centrifugal fan is as described above and will not be repeated here.

[0117] For ease of description, the fan casing of the fresh air fan 6 is defined as a fresh air casing. In one embodiment, an air flow inlet of the fresh air casing faces the air supply channel 104a, and the air flow outlet of the fresh air casing is connected to the air supply port 1d. The air flow in the air supply chamber 101b enters the fresh air casing through the two air flow inlets of the fresh air casing, and then flows out to the air supply port 1d through the air flow outlet. The length direction of the air supply channel 104a extends along the first direction, and the air flow in the air supply channel 104a converges into the air supply chamber 101b along the first direction, and then enters the fresh air casing along the first direction, which can reduce large angles such as 90° turns during the flow of outdoor air flow, thereby reducing wind resistance, reducing eddy currents, and reducing noise.

[0118] In one embodiment, the air outlet of the fresh air housing is aligned and connected with the air supply port 1d. That is, the air outlet of the fresh air housing is similar in size and shape to the air supply port 1d. With the plane perpendicular to the second direction as the projection plane, the projection of the air outlet of the fresh air housing at least partially overlaps with the projection of the air supply port 1d.

[0119] In one embodiment, please refer to Figures 2 to 4 The two side walls of the housing 1 opposite to each other along the second direction are respectively formed with a return air port 1c and a fresh air port 1a. The circumferential surface of the heat exchange core 2 surrounding the first direction includes a return air inlet surface 2c and a fresh air inlet surface 2a. The return air inlet surface 2c is located on the side of the fresh air inlet surface 2a close to the return air port 1c. Specifically, the fresh air inlet surface 2a is located on the side of the return air inlet surface 2c close to the fresh air port 1a.

[0120] The return air inlet surface 2c is the surface through which the indoor air flows into the heat exchange core 2. The fresh air inlet surface 2a is the surface through which the outdoor air flows into the heat exchange core 2.

[0121] In this embodiment, the indoor airflow from the return air outlet 1c enters the heat exchange core 2 through the return air inlet surface 2c, and the outdoor airflow from the fresh air outlet 1a enters the heat exchange core 2 through the fresh air inlet surface 2a. The indoor airflow and the outdoor airflow enter the heat exchange core 2 from two opposite sides of the second direction respectively. On the one hand, the return air outlet 1c and the return air inlet surface 2c are opposite to each other, and the fresh air outlet 1a and the fresh air inlet surface 2a are opposite to each other, which can reduce the 90° turn in the airflow process, make the air path smoother, reduce eddy currents and the generated wind noise, and has the characteristics of large air volume, low energy consumption and low noise; on the other hand, it can extend the heat exchange time of the indoor airflow and the outdoor airflow in the heat exchange core 2, thereby improving the heat exchange efficiency.

[0122] In one embodiment, please refer to Figures 2 to 4 , the return air inlet surface 2c is inclined toward the return air outlet 1c. That is to say, the angle between the return air inlet surface 2c and the plane where the return air outlet 1c is located is approximately an acute angle. In this way, it is convenient for the indoor airflow from the return air outlet 1c to smoothly enter the return air inlet surface 2c.

[0123] In one embodiment, please refer to Figures 2 to 4 , the fresh air inlet surface 2a is inclined toward the fresh air outlet 1a. That is to say, the angle between the fresh air inlet surface 2a and the plane where the fresh air outlet 1a is located is approximately an acute angle. In this way, it is convenient for the indoor air flow from the fresh air outlet 1a to smoothly enter the fresh air inlet surface 2a.

[0124] In one embodiment, please refer to Figures 1 to 4 A return air port 1c and an air supply port 1d are formed on one side wall of the shell 1 along the second direction, and a fresh air port 1a and an exhaust air port 1b are formed on the other side wall of the shell 1 along the second direction. The air flow outlet of the fresh air fan 6 is connected to the air supply port 1d, and the air flow outlet of the exhaust fan 7 is connected to the exhaust air port 1b.

[0125] For example, the return air inlet 1c and the supply air inlet 1d may be formed on the first side wall 12, and the fresh air inlet 1a and the exhaust air inlet 1b may be formed on the second side wall 13. In this way, the return air inlet 1c and the fresh air inlet 1a are located on both sides of the heat exchange core 2 along the second direction, and the supply air inlet 1d and the exhaust air inlet 1b are located on both sides of the fan chamber 10b along the second direction.

[0126] In this embodiment, the return air inlet 1c and the fresh air inlet 1a are located on both sides of the heat exchange core 2 along the second direction, and the supply air inlet 1d and the exhaust air inlet 1b are located on both sides of the fan cavity 10b along the second direction. On the one hand, it is convenient for the return air inlet 1c, the supply air inlet 1d, the fresh air inlet 1a and the exhaust air inlet 1b to be externally connected to the air duct to avoid interference between the air duct and the ceiling panel and the ceiling, and it can also avoid the problem of too large size caused by the formation of the above-mentioned air outlets on more than two side walls of the outer shell 1; on the other hand, the indoor airflow and the outdoor airflow flow smoothly in the outer shell 1, which can reduce eddy currents.

[0127] For some examples, see Figures 2 to 4 At least one of the return air port 1c, the supply air port 1d, the fresh air port 1a and the exhaust air port 1b is provided with a connecting flange 8 on its outer side. The connecting flange 8 is used for connecting an external air duct.

[0128] In one embodiment, please refer to Figures 2 to 4 The circumferential surface of the heat exchange core 2 surrounding the first direction includes a return air inlet surface 2c, a fresh air inlet surface 2a, an exhaust air outlet surface 2b and a supply air outlet surface 2d. The exhaust air outlet surface 2b is opposite to the return air inlet surface 2c, and the supply air outlet surface 2d is opposite to the fresh air inlet surface 2a. The return air inlet surface 2c, the fresh air inlet surface 2a, the exhaust air outlet surface 2b and the supply air outlet surface 2d are connected in sequence.

[0129] The exhaust air outlet surface 2b is a surface from which the indoor air flows out of the heat exchange core 2. The supply air outlet surface 2d is a surface from which the outdoor air flows out of the heat exchange core 2.

[0130] The outdoor air flow before heat exchange enters the heat exchange core 2 through the fresh air inlet surface 2a, and the outdoor air flow after heat exchange flows out of the heat exchange core 2 through the air supply outlet surface 2d.

[0131] The indoor air flow before heat exchange enters the heat exchange core 2 through the return air inlet surface 2c, and the indoor air flow after heat exchange flows out of the heat exchange core 2 through the exhaust air outlet surface 2b.

[0132] The return air inlet surface 2c, the fresh air inlet surface 2a, the exhaust air outlet surface 2b and the supply air outlet surface 2d are connected in sequence, and in the plane projection perpendicular to the first direction, the projection formed by the return air inlet surface 2c, the fresh air inlet surface 2a, the exhaust air outlet surface 2b and the supply air outlet surface 2d is a quadrilateral. In other words, with 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 second direction and the third direction is smaller.

[0133] The exhaust air outlet surface 2b is opposite to the return air inlet surface 2c, and the supply air outlet surface 2d is opposite to the fresh air inlet surface 2a. 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.

[0134] In one embodiment, the connection between the exhaust air outlet surface 2b and the supply air outlet surface 2d is a first corner, and the first corner is arranged on the bottom plate 11 of the housing 1. With such a design, the exhaust air outlet surface 2b and the supply air outlet surface 2d are not blocked by the bottom plate 11, so that the exhaust air outlet surface 2b and the supply air outlet surface 2d are convenient for air discharge.

[0135] In one embodiment, the connection between the fresh air inlet surface 2a and the exhaust air outlet surface 2b is a second corner, and one end of the isolation plate 31 can be connected to the second corner.

[0136] In one embodiment, the connection point between the return air inlet surface 2c and the supply air outlet surface 2d is a third corner, and one end of the partition plate 35 can be connected to the third corner.

[0137] In one embodiment, the connection between the return air inlet surface 2c and the fresh air inlet surface 2a is a fourth corner, and the fourth corner can abut against the cover body 14 of the housing 1 on the first side along the third direction.

[0138] For some examples, see Figures 2 to 4 The return air port 1c is formed on the first side wall 12 of the housing 1 along the second direction, the return air channel 103a is located on the first side of the air supply channel 104a along the third direction, and the return air inlet surface 2c is a partial surface of the return air channel 103a.

[0139] In this embodiment, the return air channel 103a and the supply air channel 104a are distributed along the third direction, and the length directions of the return air channel 103a, the supply air channel 104a and the heat exchange core 2 can all be along the first direction. The sum of the dimensions of the return air channel 103a and the supply air channel 104a in the third direction can be approximately equal to the dimension of the supply air chamber 101b along the third direction. The return air channel 103a, the supply air channel 104a and the supply air chamber 101b are arranged in two directions respectively. In this way, 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 103a, the supply air channel 104a and the supply air chamber 101b can be larger, and the resistance on the air flow path can be smaller. The indoor air flow enters the return air duct 103a along the second direction, and flows along the surface of the partition plate 35 toward the return air inlet surface 2c. The partition plate 35 plays a guiding role. The indoor air flow from the return air outlet 1c can enter the return air duct 103a without turning at a large angle, such as 90°, thereby reducing the resistance of the indoor air flow and reducing noise.

[0140] The specific connection position where the partition plate 35 is connected to the return air outlet 1c is not limited. For example, the partition plate 35 can be connected to the side wall where the return air outlet 1c is located, such as the first side wall 12. For another example, the partition plate 35 can be connected to the connection between the first side wall 12 and the chassis 11. For another example, the partition plate 35 can be connected to the part of the chassis 11 close to the first side wall 12.

[0141] The isolation plate 31 may be an integrally formed structure. The material of the isolation plate 31 includes but is not limited to plastic.

[0142] The partition plate 35 may be an integrally formed structure. The material of the partition plate 35 includes but is not limited to plastic.

[0143] For some examples, see Figure 5 and Figure 6 The partition 3 may further include a connecting plate 36 and a sealing plate 37 spaced apart along the first direction, the connecting plate 36 connecting the partition plate 35 and the air diffusion plate 32 , and the sealing plate 37 connecting the partition plate 35 and the isolation plate 31 .

[0144] For example, see Figures 4 to 6 The surface of the sealing plate 37 constituting the fresh air passage 101a can form a guide groove 3a. Figures 4 to 6 The baffle ribs 33 may be disposed on the surface of the connecting plate 36 constituting the exhaust chamber 102b.

[0145] The isolation plate 31 and the partition plate 35 are both part of the partition 3. In some embodiments, the partition 3 can be an integrally formed structure. For example, the partition 3 can be an integral injection molded structure. In this way, the assembly process can be reduced. In some embodiments, the partition 3 can also be a split structure. In other words, the partition 3 can be composed of a plurality of independently manufactured individual components.

[0146] The material of the partition 3 includes but is not limited to plastics and the like. It is difficult to make curved surfaces for sheet metal parts, and it is difficult to make air guide structures according to the airflow direction. The design is limited, and the thickness of the thermal insulation foam parts is usually very large and occupies a large space. Compared with sheet metal parts and thermal insulation foam parts, plastic parts have the advantages of flexible design of curved surfaces for air guide structures, relatively small thickness and do not occupy too much space.

[0147] In some embodiments, the two end surfaces of the heat exchange core 2 along the first direction may abut against the outer shell 1 or the partition 3. For example, one end surface of the heat exchange core 2 along the first direction abuts against the outer shell 1, and the other end surface of the heat exchange core 2 along the first direction abuts against the partition 3. For another example, both end surfaces of the heat exchange core 2 along the first direction abut against the outer shell 1. For another example, both end surfaces of the heat exchange core 2 along the first direction abut against the partition 3. In this way, airflow is prevented from flowing through the gap between the two end surfaces of the heat exchange core 2 along the first direction and the outer shell 1 or the partition 3.

[0148] In one embodiment, please refer to Figures 2 to 6 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 second direction forms a return air port 1c and a supply air port 1d, the second side wall 13 of the shell 1 along the second direction forms a fresh air port 1a and an exhaust air port 1b, the return air channel 103a is located on the first side of the supply air channel 104a along the third direction, the fresh air channel 101a is located on the first side of the exhaust air channel 102a along the third direction, the supply air chamber 101b is located on one side of the supply air channel 104a along the first direction, and the exhaust air chamber 102b is located on one side of the exhaust air channel 102a along the first direction.

[0149] The return air channel 103a and the supply air channel 104a are both located on the same side of the heat exchange core 2 along the second direction. The fresh air channel 101a and the exhaust air channel 102a are both located on the same side of the heat exchange core 2 along the second direction. In this way, 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 sum of the dimensions of the return air channel 103a, the fresh air channel 101a and the heat exchange core 2 along the second direction. 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 dimension of the heat exchange core 2 along the third 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.

[0150] Regarding indoor air flow: the indoor air flow enters the housing 1 from the return air port 1c, flows along the first air flow path X1 in the housing 1, and then is discharged to the outside from the exhaust port 1b. That is, the first air flow path X1 is the return air path of the indoor air flow (see Figure 2 ). Specifically: the indoor airflow from the return air port 1c enters the return air channel 103a and flows in a curve toward the first side of the third direction, and enters the heat exchange core 2 through the return air inlet surface 2c and flows to the second side. The indoor airflow after heat exchange enters the exhaust channel 102a through the exhaust air outlet surface 2b, and finally enters the exhaust chamber 102b and is discharged through the exhaust port 1b. The indoor airflow flows linearly during the flow process, with almost no airflow dead angle, smooth air path, and small wind resistance.

[0151] For outdoor air flow: the outdoor air flow enters the housing 1 from the fresh air inlet 1a, flows along the second air flow path X2 in the housing 1, and then is discharged to the room from the air supply port 1d. That is, the second air flow path X2 is the fresh air path for the outdoor air flow (see Figure 2 ). After the outdoor air from the fresh air outlet 1a enters the fresh air channel 101a, it flows in a curve toward the first side of the third direction, and enters the heat exchange core 2 through the fresh air inlet surface 2a and flows to the second side. The outdoor air after heat exchange enters the air supply channel 104a through the air supply outlet surface 2d, and finally enters the air supply chamber 101b and is discharged through the air supply outlet 1d. The outdoor air flows linearly during the flow process, with almost no airflow dead angle, smooth air path, and small wind resistance.

[0152] 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.

[0153] 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; Heat exchange core; A partition, wherein the partition defines a portion of the space within the shell as a heat exchange chamber, wherein the heat exchange core is located within the heat exchange chamber; the partition comprises an isolation plate, wherein the isolation plate connects the heat exchange core and the shell to separate the heat exchange chamber into a fresh air channel and an exhaust air channel.

2. The fresh air device according to claim 1, characterized in that: The exhaust channel has an exhaust chamber on one side along the first direction, and a fresh air outlet is formed on a side wall of the shell along the second direction. The fresh air channel is located on the first side of the exhaust channel along the third direction, the fresh air outlet is connected with the fresh air channel, and the exhaust chamber is connected with the exhaust channel, wherein the first direction, the second direction and the third direction are perpendicular to each other.

3. The fresh air device according to claim 2, characterized in that: The partition includes an air diffusion plate, a surface of which is a partial surface of the exhaust chamber, one end of the air diffusion plate along the third direction is connected to the isolation plate, and the other end of the air diffusion plate along the third direction extends obliquely away from the isolation plate.

4. The fresh air device according to claim 3, characterized in that: An exhaust port is formed on the side wall of the shell where the fresh air inlet is located along the second direction, and the exhaust port is connected to the exhaust chamber. The partition includes a baffle rib located in the exhaust chamber, and the baffle rib is arranged on the side of the air expansion plate away from the exhaust port along the second direction.

5. The fresh air device according to claim 4, characterized in that: The plurality of baffle ribs are distributed at intervals along the second direction.

6. The fresh air device according to claim 2, characterized in that: The fresh air device includes a fresh air filter located in the fresh air channel, and the isolation plate includes a drainage slope, the drainage slope is located between the fresh air filter and the fresh air outlet, and the drainage slope is inclined toward the fresh air outlet.

7. The fresh air device according to claim 6, characterized in that: The partition is formed with a guide groove extending along a third direction, and an end portion of the fresh air filter along the first direction is located in the guide groove.

8. The fresh air device according to claim 6, characterized in that: The partition comprises a guide rib arranged on the isolation plate, and the guide rib is located on one side of the fresh air filter along the second direction.

9. The fresh air device according to claim 2, characterized in that: The shell is formed with an air outlet, the air outlet is communicated with the air exhaust chamber, and the air outlet and the fresh air outlet are located on the same side wall of the shell along the second direction.

10. The fresh air device according to any one of claims 1 to 9, characterized in that: The shell is formed with a return air inlet and a supply air inlet, and the partition includes a partition plate, which connects the heat exchange core and the return air inlet to separate the heat exchange chamber into a return air channel and a supply air channel, the return air inlet is connected to the return air channel, and the supply air inlet is connected to the supply air channel.

11. The fresh air device according to any one of claims 1 to 9, characterized in that: The heat exchange core extends along a first direction, and the circumferential surface of the heat exchange core surrounding the first direction includes a fresh air inlet surface and an exhaust air outlet surface, the fresh air inlet surface is a partial surface of the fresh air channel, and the exhaust air outlet surface is a partial surface of the exhaust channel.

Images