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, a fan and a partition part, the partition part limits the space in the shell into a heat exchange cavity and a fan cavity, the heat exchange core is located in the heat exchange cavity, the fan is located in the fan cavity, and the heat exchange core is located in the fan cavity. And the separator is of an integrally formed structure. The separator is of an integrally formed structure, so that the assembling steps of the separator can be saved; the space in the shell is limited into the heat exchange cavity and the fan cavity by the integrated separator, that is, the fan cavity and the heat exchange cavity can be limited by one separator, so that the problems of wrong assembly, neglected assembly and the like of a plurality of plates can be avoided, and the assembly efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, and more particularly to a fresh air device. Background Technology

[0002] This section is intended to provide background or context for embodiments of this application. The description herein is not intended to imply that it is prior art simply because it is included in this section.

[0003] Fresh air systems can be used to deliver outdoor airflow into indoor spaces and exhaust indoor airflow to the outside. In related technologies, the outer casing of fresh air systems contains multiple panels for isolating air ducts. Each panel is manufactured separately and then assembled into the casing. This results in a large number of separate panels, cumbersome assembly, and low assembly efficiency. Summary of the Invention

[0004] In view of this, this application aims to provide a fresh air device that can improve assembly efficiency.

[0005] This application provides a fresh air device, including:

[0006] shell;

[0007] Heat exchange core;

[0008] Fan;

[0009] A partition defines the space within the housing as a heat exchange chamber and a fan chamber, the heat exchange core is located within the heat exchange chamber, and the fan is located within the fan chamber. The partition is an integrally formed structure.

[0010] In some embodiments, the heat exchange core extends along a first direction, and the separator includes a partition plate and an isolation plate. The partition plate and the isolation plate are respectively connected to both sides of the heat exchange core along a second direction. The partition plate separates the heat exchange cavity into a return air channel and a supply air channel, and the isolation plate separates the heat exchange cavity into a fresh air channel and an exhaust air channel. The first direction and the second direction are perpendicular.

[0011] In some embodiments, the return air duct is located on the first side of the supply air duct along a third direction, and the fresh air duct is located on the first side of the exhaust air duct along a third direction, wherein the first direction, the second direction, and the third direction are perpendicular to each other.

[0012] In some embodiments, the outer casing has a return air inlet and a supply air inlet formed on the first sidewall along the second direction, and a fresh air inlet and an exhaust air inlet formed on the second sidewall along the second direction. The return air inlet is connected to the return air channel, the fresh air inlet is connected to the fresh air channel, and both the supply air inlet and the exhaust air inlet are connected to the fan cavity.

[0013] In some embodiments, the partition plate includes a guide plate body, the surface of the guide plate body facing the first sidewall being a return air guide surface, the return air guide surface being a portion of the surface of the return air channel, and the return air guide surface including a recessed area recessed in the direction away from the first sidewall.

[0014] In some embodiments, the air supply channel includes an expansion section, the cross-sectional area of ​​which increases from away from the fan cavity toward closer to the fan cavity.

[0015] In some embodiments, the partition includes a partition plate whose surface is a portion of the surface of the fan cavity, one end of the partition plate being connected to the partition plate in a third direction, and a portion of the partition plate protruding toward the partition plate.

[0016] In some embodiments, the partition includes an air diffuser, the surface of which is part of the surface of the fan cavity, one end of which is connected to the partition plate in a third direction, and the other end of which extends obliquely away from the partition plate.

[0017] In some embodiments, the separator includes a support having an opening groove that opens toward the heat exchange core, a portion of which is received in the opening groove.

[0018] In some embodiments, the heat exchange core extends along a first direction, the support body is located on a second side of the heat exchange core along a third direction, the support body includes a first inclined plate, a second inclined plate and a support plate, a portion of the support plate is recessed in a direction away from the heat exchange core to form the opening groove, and the first inclined plate and the second inclined plate are respectively connected to the two sides of the support plate along the second direction.

[0019] In some embodiments, the heat exchange core includes intersecting air supply outlet surface and air exhaust outlet surface, the connection between the air supply outlet surface and the air exhaust outlet surface is a first corner, and the first corner is accommodated in the opening groove.

[0020] In some embodiments, the heat exchange core includes a plurality of heat exchange units arranged along a first direction.

[0021] In some embodiments, the separator includes a guide plate disposed on the support body, the guide plate abutting against one side of the heat exchange core along a second direction.

[0022] In some embodiments, the separator includes two side frames with vents formed thereon, the two side frames being connected to opposite sides of the support body along a second direction, and the heat exchange core abutting against the two side frames.

[0023] In some embodiments, the fresh air device includes a stop member, one end of the frame along a third direction is connected to the support body, the stop member is disposed at the end of the frame along a third direction away from the support body, and the stop member abuts against the portion of the heat exchange core along a third direction away from the support body.

[0024] In some embodiments, the housing includes a shell having a chassis and a plurality of side plates, all of which are disposed on the same side of the chassis in the thickness direction, and the shell is an integrally formed structure.

[0025] In some embodiments, the fresh air device includes a partition that divides the fan cavity into an independent supply air chamber and an exhaust air chamber, the partition including a bend that bends toward the supply air chamber.

[0026] The fresh air equipment provided in this application embodiment has an integrally molded partition, which can save assembly steps. The integral partition defines the space inside the shell as a heat exchange chamber and a fan chamber. In other words, one partition can define the fan chamber and the heat exchange chamber, which can avoid problems such as misassembly or omission of multiple plates and improve assembly efficiency. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a fresh air device in one embodiment of this application;

[0028] Figure 2 for Figure 1 The diagram shows another perspective of the fresh air system with some parts omitted. In this diagram, the first airflow path X1 is the indoor airflow path, and the second airflow path X2 is the outdoor airflow path.

[0029] 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;

[0030] Figure 4 for Figure 1 Another partial cross-sectional view of the fresh air unit shown, in which the dashed arrows schematically indicate the direction of outdoor airflow within the air supply duct;

[0031] Figure 5 for Figure 1 A schematic diagram of part of the structure of the fresh air system shown;

[0032] Figure 6 This is a schematic diagram of the housing and partition in one embodiment of this application;

[0033] Figure 7 for Figure 6Enlarged view of point A in the middle;

[0034] Figure 8 This is a schematic diagram of the structure of the separator in one embodiment of this application;

[0035] Figure 9 for Figure 8 A schematic diagram of the separator from another perspective;

[0036] Figure 10 This is a schematic diagram of the shell structure in one embodiment of this application.

[0037] Explanation of reference numerals in the attached figures

[0038] 1. Outer shell; 1a. Return air inlet; 1b. Supply air outlet; 1c. Fresh air inlet; 1d. Exhaust air outlet; 11. Shell; 111. Chassis; 112. Side plate; 12. Cover; 13. Cover plate; 10a. Heat exchange chamber; 101a. Return air duct; 102a. Supply air duct; 102aa. Expansion section; 103a. Fresh air duct; 104a. Exhaust air duct; 10b. Fan chamber; 101b. Supply air chamber; 102b. Exhaust air chamber;

[0039] Heat exchange core 2; return air inlet surface 2a; fresh air inlet surface 2b; supply air outlet surface 2c; exhaust air outlet surface 2d; first corner 201; heat exchange unit 210;

[0040] Fan 3; Fresh air fan 31; Exhaust fan 32;

[0041] Separator 4; Separator plate 41; Guide plate body 411; Return air guide surface 411a; Recessed area 411aa; Drain plate body 412; Support plate body 413; Folding plate body 414; Isolation plate 42; Partition plate 43; Air expansion plate 44; Support body 45; Opening slot 45a; First inclined plate 451; Second inclined plate 452; Support plate 453; Guide plate 46; Frame 47; Vent 47a;

[0042] 5. Stopper; 6. Partition plate; 61. Bending part; 7. Return air filter; 8. Fresh air filter. Detailed Implementation

[0043] 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.

[0044] 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 and the second side of the third 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.

[0045] Please see Figure 1 , Figure 2 and Figure 6 This application provides a fresh air device, which includes a housing 1, a heat exchange core 2, a fan 3, and a partition 4. The partition 4 defines the space inside the housing 1 as a heat exchange chamber 10a and a fan chamber 10b. The heat exchange core 2 is located in the heat exchange chamber 10a, and the fan 3 is located in the fan chamber 10b. The partition 4 is an integrally formed structure.

[0046] 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 room. 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.

[0047] Fan 3 is used to drive the flow of outdoor and indoor air.

[0048] The fresh air equipment provided in this application embodiment has a one-piece molded structure for the partition 4, which can save the assembly steps of the partition 4; the one-piece partition 4 defines the space inside the outer shell 1 as the heat exchange chamber 10a and the fan chamber 10b. In other words, one partition 4 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.

[0049] 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.

[0050] When the fresh air system provided in this embodiment is installed on a ceiling or suspended ceiling panel, the third direction is consistent with the vertical 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 outer shell 1 as approximately hexahedral in shape as an example, the third direction can be the thickness direction of the outer shell 1, one of the first and second directions can be the width direction of the outer shell 1, and the other of the first and second directions can be the length direction of the outer shell 1. Taking the fresh air system 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 and second directions, and the thickness direction of the outer shell 1 is along the vertical direction, which facilitates the installation of the fresh air system in the suspended ceiling space.

[0051] 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 multiple 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 waste of 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 will also increase the motor load of the fresh air equipment, thereby increasing the speed and making the machine noise and vibration greater.

[0052] In one embodiment of this application, please refer to Figures 2 to 6The heat exchange core 2 extends along the first direction. The separator 4 includes a separator plate 41 and an isolation plate 42. The separator plate 41 and the isolation plate 42 are respectively connected to the two sides of the heat exchange core 2 along the second direction. The separator plate 41 divides the heat exchange chamber 10a into a return air channel 101a and a supply air channel 102a. The isolation plate 42 divides the heat exchange chamber 10a into a fresh air channel 103a and an exhaust air channel 104a. The first direction and the second direction are perpendicular.

[0053] 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.

[0054] The two surfaces of the partition plate 41 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.

[0055] The two surfaces of the partition plate 42 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.

[0056] If the heat exchange core 2 extends along a third direction, that is, multiple heat exchange medium plates are stacked along a third direction, it will greatly increase the thickness of the outer shell 1 in the vertical direction, making it difficult to assemble the entire unit into an installation space with a small vertical dimension. If the size of the heat exchange core 2 in the third direction is reduced in order to accommodate the small vertical installation space, it will result in too few heat exchange medium plates or too small spacing, leading to poor heat exchange performance.

[0057] In this embodiment, the heat exchange core 2 extends along the first direction. This allows for a larger dimension of the heat exchange core 2 along the first direction without affecting the thickness of the outer shell 1 in the vertical direction. This allows the thickness of the outer shell 1 in the vertical direction to be designed as needed without affecting heat exchange efficiency, satisfying both installation and heat exchange requirements. The partition plate 41 divides a portion of the space within the heat exchange chamber 10a into independent return air channels 101a and supply air channels 102a. The partition plate 42 divides a portion of the space within the heat exchange chamber 10a into independent fresh air channels 103a and exhaust air channels 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, allowing for larger dimensions of the aforementioned air ducts and heat exchange core 2.

[0058] In one embodiment, please refer to Figure 2 and Figure 3 The return air duct 101a is located on the first side of the supply air duct 102a along the third direction, and the fresh air duct 103a is located on the first side of the exhaust air duct 104a along the third direction, wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0059] In this embodiment, the return air duct 101a and the supply air duct 102a are distributed along a third direction, and the fresh air duct 103a and the exhaust air duct 104a are distributed along a third direction. 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 a first direction. The sum of the dimensions of the fresh air duct 103a and the exhaust air duct 104a in the third direction can be approximately equal to the dimension of the fan cavity 10b in the third direction. The sum of the dimensions of the return air duct 101a and the supply air duct 102a in the third direction can also be approximately equal to the dimension of the fan cavity 10b in the third 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.

[0060] In one embodiment of this application, please refer to Figure 2The fan chamber 10b includes an independent air supply chamber 101b and an exhaust chamber 102b, which are arranged along a second direction. The two fans 3 are located in the air supply chamber 101b and the exhaust chamber 102b, respectively.

[0061] In this embodiment, the supply air chamber 101b and the exhaust air chamber 102b can be located on the same side of the heat exchange core 2 along the first direction to meet the miniaturization requirements. The supply air chamber 101b is used to circulate outdoor airflow after heat exchange, and the exhaust air chamber 102b is used to circulate indoor airflow after heat exchange. The exhaust air chamber 102b and the supply air chamber 101b can be independent of each other, that is, the indoor airflow in the exhaust air chamber 102b does not enter the supply air chamber 101b, the outdoor airflow in the supply air chamber 101b does not enter the exhaust air chamber 102b, and there is no gas flow between the exhaust air chamber 102b and the supply air chamber 101b. The fan 3 located in the supply air chamber 101b drives the outdoor airflow, and the fan 3 located in the exhaust air chamber 102b drives the indoor airflow.

[0062] In one embodiment, please refer to Figure 2 and Figure 3 The axes of both fans 3 extend along the first direction.

[0063] The larger the radial dimension of the fan 3, the greater its air volume; conversely, the smaller the radial dimension of the fan 3, the smaller its air volume. Taking the third direction and the vertical direction as an example, if the axis of the fan 3 is along the third direction, that is, if the fan 3 is mounted in a horizontal position on the chassis 111 of the outer casing 1 along the third direction, increasing the radial dimension of the fan 3 would result in an excessively large overall size. If the radial dimension of the fan 3 is reduced to reduce the overall size, the air volume of the fresh air fan 31 would be too small. In other words, if the fan 3 is mounted in a horizontal position on the chassis 111 of the outer casing 1 along the third direction, a large radial dimension of the fan 3 would excessively increase the dimension of the outer casing 1 along the first direction, which is not conducive to product miniaturization.

[0064] In this embodiment, the axes of both fans 3 extend along the first direction. When the radial dimension of the fan 3 is large, the fan 3 will not excessively increase the dimension of the whole machine along the first direction, thereby reducing the volume occupied by the fan 3, making the structural layout more reasonable and the overall machine smaller.

[0065] It is understandable that the axial and radial directions of the fan 3 are perpendicular to each other, and the axis of the fan 3 is a straight line extending along the axial direction.

[0066] In some embodiments, the fan 3 is a centrifugal fan. For example, the centrifugal fan 3 includes a fan casing and a fan impeller, with the impeller located inside the fan casing. The impeller rotates to drive airflow, and the fan casing acts as a guide. The axis of both the impeller and the fan casing can extend along a first direction, so that increasing the radial dimension of the impeller and the fan casing does not substantially increase the dimension along the first direction.

[0067] In one embodiment, the fan casing is a volute.

[0068] 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.

[0069] In one embodiment, please refer to Figure 2 and Figure 5 The fresh air equipment includes a partition plate 6, which divides the fan cavity 10b into an independent air supply chamber 101b and an exhaust chamber 102b. The partition plate 6 includes a bent portion 61, which bends toward the air supply chamber 101b.

[0070] For example, the two ends of the partition plate 6 along the first direction can be connected to the side wall of the housing 1 and the partition 4, respectively.

[0071] In this embodiment, the air volume of the exhaust chamber 102b is greater than that of the supply chamber 101b. The bending portion 61 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.

[0072] In one embodiment, the fresh air device includes a filter screen, and a partition 4 has a guide groove formed therein, with the end of the filter screen located within the guide groove. The guide groove can limit the displacement of the filter screen along its thickness direction to maintain the stability of the filter screen. The partition 4 forming a guide groove eliminates the need for additional guide structures for limiting the position of the filter screen, reducing production costs.

[0073] In one embodiment, the guide channel may extend in a third direction. The filter screen may move within the guide channel in a third direction, moving in and out of the heat exchange chamber 10a.

[0074] The functions of a filter include, but are not limited to, removing dust, microorganisms, and / or harmful gases from the air. For example, filters include, but are not limited to, pre-filters, medium-efficiency filters, and high-efficiency filters. Pre-filters are primarily used to filter impurities larger than 5 μm (micrometers); medium-efficiency filters are primarily used to filter impurities between 1 μm and 5 μm; and high-efficiency filters are primarily used to filter impurities between 0.3 μm and 1 mm. Filters can be used individually or in combination of at least two different types to suit various application scenarios.

[0075] For example, in some embodiments, please refer to Figure 2 , Figure 5 and Figure 5 A filter screen is installed inside the return air duct 101a, which can be defined as the return air filter 7. The return air filter 7 can be a pre-filter.

[0076] For example, in some embodiments, please refer to Figure 2 , Figure 5 and Figure 5 Two filters are installed in the fresh air duct 103a, which can be defined as fresh air filters 8. The two fresh air filters 8 can be a pre-filter and a high-efficiency filter, respectively.

[0077] In some embodiments, please refer to Figure 3 and Figure 4 The side wall of the outer casing 1 along the second side in the third direction is the chassis 111. That is to say, the chassis 111 can face upward, i.e., towards the ceiling.

[0078] In one embodiment, please refer to Figure 10 The outer casing 1 includes a housing 11, which has a base 111 and multiple side plates 112. All side plates 112 are disposed on the same side of the base 111 in the thickness direction. The housing 11 is a one-piece molded structure. For example, the number of side plates 112 can be two or three, etc. This reduces the assembly steps of the housing 11 and improves assembly efficiency.

[0079] In one embodiment, please refer to Figure 10 The side wall of the outer shell 1 along the second side in the third direction is the chassis 111, and the first side wall and the second side wall of the outer shell 1 that are opposite each other in the second direction can both be side plates 112.

[0080] In one embodiment, please refer to Figure 1 and Figure 10 The outer shell 1 includes a cover plate 13 and a cover 12. Three side plates 112 and a chassis 111 together form an integrally formed shell 11. The three side plates 112 are connected sequentially along the circumference of the chassis 111. The cover plate 13 connects two opposite side plates 112. The cover 12 is disposed on an opposite side of the chassis 111. The cover plate 13, the cover 12 and the shell 11 together define the outer shell 1, which has a hollow space.

[0081] In one embodiment, the fresh air device includes a temperature sensing element. A separator 4 has elastic arms and ribs, spaced apart to define a card-dispensing interface. A portion of the temperature sensing element is clamped within the card-dispensing interface. Thus, the separator 4 provides a fixing structure for the temperature sensing element, improving the ease of assembly.

[0082] Temperature sensing devices include, but are not limited to, temperature sensors.

[0083] In one embodiment, please refer to Figures 1 to 6 The outer casing 1 has a return air inlet 1a and a supply air inlet 1b formed on its first sidewall along the second direction, and a fresh air inlet 1c and an exhaust air inlet 1d formed on its second sidewall along the second 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, and both the supply air inlet 1b and the exhaust air inlet 1d are connected to the fan chamber 10b. For example, 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 the first direction near the supply air chamber 101b is connected to the supply air chamber 101b. The outlet of the exhaust air duct 104a along the first direction near the exhaust air chamber 102b is connected to the exhaust air chamber 102b.

[0084] Return air vent 1a connects to the outside and is used to introduce indoor airflow into the outer casing 1.

[0085] The exhaust vent 1d is connected to the outside and is used to draw indoor airflow out of the outer casing 1.

[0086] Fresh air inlet 1c connects to the outside and is used to introduce outdoor airflow into the outer casing 1.

[0087] Air outlet 1b is connected to the outside and is used to draw outdoor airflow out of the housing 1.

[0088] The return air inlet 1a and the fresh air inlet 1c are located on both sides of the heat exchange core 2 along the second 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 second direction.

[0089] In this embodiment, the return air inlet 1a and the fresh air inlet 1c are located on both sides of the heat exchange core 2 along the second 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 second 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 along the second direction through the return air inlet 1a. The partition plate 41 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 through the fresh air inlet 1c in the second direction. The isolation plate 42 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 shell 1, reducing eddies.

[0090] In one embodiment, please refer to Figures 2 to 9 The partition plate 41 includes a guide plate body 411. The surface of the guide plate body 411 facing the first side wall is a return air guide surface 411a. The return air guide surface 411a is a part of the surface of the return air channel 101a. The return air guide surface 411a includes a recessed area 411aa that is recessed in the direction away from the first side wall.

[0091] In this embodiment, the return air guide surface 411a is a portion of the surface of the return air duct 101a. By increasing the volume of the return air duct 101a through the recessed area 411aa, the wind speed of the indoor airflow within the return air duct 101a is reduced, thereby reducing the frictional noise between the indoor airflow and the return air guide surface 411a.

[0092] In some embodiments, a portion of the guide plate 411 may be recessed away from the first sidewall to form a recessed region 411aa. That is, the portion of the guide plate 411 corresponding to the recessed region 411aa occupies space in the air supply channel 102a. This eliminates the need to thin the portion of the guide plate 411 corresponding to the recessed region 411aa, resulting in better structural strength of the guide plate 411. The outdoor airflow volume in the portion of the air supply channel 102a corresponding to the recessed region 411aa is relatively small, requiring less air supply space. The portion of the guide plate 411 corresponding to the recessed region 411aa occupies space in the air supply channel 102a without increasing the resistance of the air supply channel 102a; it also achieves a balance between the return air channel 101a and the air supply channel 102a.

[0093] In one embodiment, please refer to Figures 2 to 9With the plane perpendicular to the second direction as the projection plane, the projection of the return air vent 1a is located within the projection range of the recessed area 411aa. The indoor airflow of the return air vent 1a is relatively large. By increasing the space of the corresponding return air vent 1a through the recessed area 411aa, the wind speed of the indoor airflow is reduced, thereby reducing the frictional noise between the indoor airflow and the return air guide surface 411a.

[0094] In one embodiment, please refer to Figure 4 , Figure 8 and Figure 9 The air supply duct 102a includes an expansion section 102aa, the cross-sectional area of ​​which increases from the direction away from the fan cavity 10b toward the direction closer to the fan cavity 10b. For example, in a first direction, the cross-sectional area of ​​the expansion section 102aa increases from the direction away from the air supply chamber 101b toward the direction closer to the air supply chamber 101b. The airflow in the air supply duct 102a is concentrated and converged into the fan cavity 10b, for example, the air supply chamber 101b. The closer the air supply duct 102a is to the fan cavity 10b, the greater the airflow volume. The increase in the cross-sectional area of ​​the expansion section 102aa from the direction away from the fan cavity 10b toward the direction closer to the fan cavity 10b can reduce the air velocity, thereby reducing noise.

[0095] The flow cross section is a section perpendicular to the streamline cluster, such as the airflow.

[0096] In one embodiment, please refer to Figures 2 to 9 The partition 4 includes a partition plate 43, the surface of which is a portion of the surface of the fan chamber 10b. One end of the partition plate 43 is connected to the partition plate 41 in a third direction, and a portion of the partition plate 43 protrudes toward the partition plate 41. For example, the surface of the partition plate 43 is a portion of the surface of the air supply chamber 101b.

[0097] In this embodiment, outdoor airflow is concentrated into the air supply chamber 101b and then delivered to the indoor environment, maximizing the airflow in the air supply chamber 101b. The partition plate 43 is located at the junction of the air supply channel 102a and the air supply chamber 101b. The partition plate 43 protrudes towards the partition plate 41, 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.

[0098] In one embodiment, please refer to Figures 2 to 9 The partition 4 includes an air diffuser 44, the surface of which is a portion of the surface of the fan chamber 10b. One end of the air diffuser 44 is connected to the partition plate 42 in a third direction, and the other end of the air diffuser 44 extends obliquely away from the partition plate 42. For example, the surface of the air diffuser 44 is a portion of the surface of the exhaust chamber 102b.

[0099] In this embodiment, the surface of the diffuser 44 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 44 towards the first side in a third 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 44 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.

[0100] For ease of description, the fan 3 located in the air supply chamber 101b is defined as the air supply fan 3, the fan 3 located in the exhaust chamber 102b is defined as the exhaust fan 32, the fan casing of the fresh air fan 31 is defined as the fresh air casing, and the fan casing of the exhaust fan 32 is defined as the exhaust fan casing.

[0101] In one embodiment, one airflow inlet of the fresh air unit casing faces the outlet of the air supply duct 102a, and the airflow outlet of the fresh air unit casing is connected to the air supply outlet 1b. Airflow within the air supply chamber 101b enters the fresh air unit casing through the two airflow inlets and then flows out to the air supply outlet 1b through the airflow outlet. The length of the air supply duct 102a extends along a first direction, and the airflow within the air supply duct 102a converges along the first direction into the air supply chamber 101b, and then enters the fresh air unit casing along the first direction. This reduces large-angle turns (e.g., 90°) during outdoor airflow, thereby reducing wind resistance, eddies, and noise.

[0102] In one embodiment, the airflow outlet of the fresh air unit casing is aligned and connected to the air supply outlet 1b. That is, the airflow outlet of the fresh air unit casing and the air supply outlet 1b are similar in size and shape. Taking a plane perpendicular to the second direction as the projection plane, the projection of the airflow outlet of the fresh air unit casing and the projection of the air supply outlet 1b at least partially overlap.

[0103] In one embodiment, one airflow inlet of the exhaust fan housing faces the outlet of the exhaust duct 104a, and the airflow outlet of the exhaust fan housing is connected to the exhaust port 1d. Airflow within the exhaust chamber 102b enters the exhaust fan housing through the two airflow inlets and then flows out to the exhaust port 1d through the airflow outlet. The exhaust duct 104a extends along a first direction, and the airflow within the exhaust duct 104a converges along the first direction into the exhaust chamber 102b, and then enters the exhaust fan housing along the first direction. This reduces large-angle turns (e.g., 90°) during outdoor airflow, thereby reducing wind resistance, eddies, and noise.

[0104] In one embodiment, the airflow outlet of the exhaust fan casing is aligned and connected to the exhaust port 1d. That is, the airflow outlet of the exhaust fan casing and the exhaust port 1d are similar in size and shape. Taking a plane perpendicular to the second direction as the projection plane, the projection of the airflow outlet of the exhaust fan casing and the projection of the exhaust port 1d at least partially overlap.

[0105] One end of the partition plate 41 is connected to the heat exchange core 2, and the other end of the partition plate 41 can be connected to the outer casing 1, for example, to the return air vent 1a. That is, the partition plate 41 can be connected to the area surrounding the return air vent 1a. For example, the partition plate 41 can be connected to the first side wall. Another example is that the partition plate 41 can be connected to the connection between the first side wall and the chassis 111. Yet another example is that the partition plate 41 can be connected to the part of the chassis 111 near the first side wall.

[0106] In one embodiment, please refer to Figures 2 to 9 The partition plate 41 includes a diversion plate 412 and a support plate 413. The support plate 413 connects the diversion plate 412 and the guide plate 411. One end of the diversion plate 412 is connected to the second side of the return air vent 1a in a third direction, and the other end of the diversion plate 412 extends obliquely away from the return air vent 1a. The return air filter 7 is disposed on the support plate 413. The angle between the diversion plate 412 and the return air filter 7 is obtuse. The diversion plate 412 is inclined towards the return air vent 1a. The indoor airflow from the return air vent 1a flows through the guide plate to the first side in a third direction and then to the return air filter 7, reducing airflow obstruction and lowering the probability of eddies.

[0107] In one embodiment, please refer to Figures 2 to 9 The partition plate 41 includes a folding plate body 414, which connects the guide plate body 411 and the heat exchange core. The folding plate body 414 is perpendicular to a third direction. For example, the folding plate body 414 can be smoothly connected to the guide plate body 411. The folding plate body 414 facilitates the flow of indoor air to the return air inlet surface 2a.

[0108] One end of the isolation plate 42 is connected to the heat exchange core 2, and the other end of the isolation plate 42 can be connected to the outer casing 1. The location of the isolation plate 42 connected to the outer casing 1 is not limited. For example, the isolation plate 42 can be connected to the fresh air inlet 1c, that is, the isolation plate 42 can be connected to the surrounding area of ​​the fresh air inlet 1c. In some embodiments, the isolation plate 42 can be connected to the side wall where the fresh air inlet 1c is located, such as the second side wall. In some embodiments, the isolation plate 42 can be connected to the connection between the second side wall and the chassis 111. In some embodiments, the isolation plate 42 can be connected to the part of the chassis 111 near the second side wall. For example, the fresh air filter 8 can be carried on the isolation plate 42.

[0109] The materials of the separator 4 include, but are not limited to, plastics. Sheet metal parts are difficult to make curved surfaces and difficult to design according to airflow direction, resulting in design limitations. Insulation foam parts are usually very thick and take up a lot of space. Compared with sheet metal parts and insulation foam parts, plastic parts have the advantages of flexible curved surface design for airflow direction, and their relatively smaller thickness does not take up too much space.

[0110] In some embodiments, the partition 4 can be a one-piece injection molded structure. The partition 4 is lightweight and can also reduce the number of fasteners between the partition plate 41, the isolation plate 42, the partition plate 43, the air diffuser 44, and the support body 45, greatly improving assembly efficiency, reducing weight, and lowering costs.

[0111] In some embodiments, the partition 4 may further include a connecting plate and a sealing plate spaced apart along a first direction, the connecting plate connecting the partition plate 43 and the air expansion plate 44, the sealing plate connecting the partition plate 41 and the isolation plate 42, and the support body 45 connecting the connecting plate and the sealing plate at both ends along the first direction.

[0112] In one embodiment, please refer to Figure 3 The heat exchange core 2 has a circumferential surface surrounding the first direction, including a return air inlet surface 2a, a fresh air inlet surface 2b, an exhaust air outlet surface 2d, and a supply air outlet surface 2c. The exhaust air outlet surface 2d is opposite to the return air inlet surface 2a, and the supply air outlet surface 2c is opposite to the fresh air inlet surface 2b. The return air inlet surface 2a, the fresh air inlet surface 2b, the exhaust air outlet surface 2d, and the supply air outlet surface 2c are connected in sequence.

[0113] 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.

[0114] 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.

[0115] 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 second and third directions are smaller.

[0116] 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.

[0117] In one embodiment, please refer to Figure 3 The connection between the exhaust outlet surface 2d and the supply outlet surface 2c is a first corner 201, which is located on the chassis 111 of the outer casing 1. With this design, the exhaust outlet surface 2d and the supply outlet surface 2c are not blocked by the chassis 111, which facilitates the exhaust outlet surface 2d and the supply outlet surface 2c to dissipate air.

[0118] In one embodiment, please refer to Figure 3 The connection between the fresh air inlet surface 2b and the exhaust air outlet surface 2d is the second corner, and one end of the isolation plate 42 can be connected to the second corner.

[0119] In one embodiment, please refer to Figure 3 The connection between the return air inlet surface 2a and the supply air outlet surface 2c is the third corner, and one end of the partition plate 41 can be connected to the third corner.

[0120] In one embodiment, please refer to Figure 3 The connection between the return air inlet surface 2a and the fresh air inlet surface 2b is the fourth corner, which can abut against the cover 12 of the outer shell 1 along the third direction first side.

[0121] In one embodiment, please refer to Figures 2 to 9 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 inlet 1b on the first side wall along the second direction. The outer shell 1 forms a fresh air inlet 1c and an exhaust air inlet 1d on the second side wall along the second direction. The return air channel 101a is located on the first side of the air supply channel 102a along the third direction. The fresh air channel 103a is located on the first side of the exhaust channel 104a along the third 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.

[0122] 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 the second 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 the second direction. Thus, the sum of the dimensions of the supply air chamber 101b and the exhaust air chamber 102b along the second 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 the second direction. The sum of the dimensions of the supply air chamber 101b and the exhaust air chamber 102b along the third direction is approximately equal to the dimension of the heat exchange core 2 along the third 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.

[0123] Regarding indoor airflow: Indoor airflow enters the housing 1 from the return air inlet 1a and flows within the housing 1 along the first airflow path X1 (see [link]). Figure 2 Then, the airflow is discharged to the outside through the exhaust vent 1d. In other words, the first airflow path is the return air path of the indoor airflow. Specifically: the indoor airflow from the return air vent 1a enters the return air channel 101a and flows in a curved direction to the first side in a third direction. It then 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 channel 104a through the exhaust outlet surface 2d and finally enters the exhaust chamber 102b and is discharged through the exhaust vent 1d. The indoor airflow flows linearly with almost no dead air zones, ensuring smooth airflow and low wind resistance.

[0124] Regarding outdoor airflow: Outdoor airflow enters the housing 1 through the fresh air inlet 1c and flows within the housing 1 along the second airflow path X2 (see [link]). Figure 2 The outdoor airflow from the fresh air inlet 1c enters the fresh air duct 103a and flows in a curved direction to the first side. It then enters the heat exchange core 2 through the fresh air inlet 2b and flows to the second side. After heat exchange, the outdoor airflow enters the air supply duct 102a through the air supply outlet 2c and finally enters the air supply chamber 101b and is discharged through the air supply outlet 1b. The outdoor airflow flows linearly with almost no dead zones, ensuring smooth airflow and low wind resistance.

[0125] In one embodiment, please refer to Figure 3 , Figures 6 to 8 The separator 4 includes a support body 45, which has an opening groove 45a that opens toward the heat exchange core 2. A portion of the heat exchange core 2 is accommodated in the opening groove 45a. The support body 45 can be used to support the heat exchange core 2, and the opening groove 45a is used to position and limit the heat exchange core 2, thereby preventing the heat exchange core 2 from shifting to a certain extent and facilitating assembly and fixation.

[0126] In one embodiment, please refer to Figure 3 , Figures 6 to 8 The support body 45 can be installed on the chassis 111. During the installation of the heat exchange core 2, the heat exchange core 2 can be placed into the support body 45 from the first side away from the chassis 111, and part of the heat exchange core 2 is inserted into the opening slot 45a, which is simple to operate.

[0127] For example, the support body 45 and the chassis 111 can be detachably connected or non-detachably connected. Detachable connections include, but are not limited to, screw connections or bolt connections, etc.

[0128] In one embodiment, please refer to Figure 3 , Figures 6 to 8 The heat exchange core 2 extends along a first direction, and the support body 45 is located on the second side of the heat exchange core 2 along a third direction. The support body 45 includes a first inclined plate 451, a second inclined plate 452 and a support plate 453. A portion of the support plate 453 is recessed in a direction away from the heat exchange core 2 to form an opening groove 45a. The first inclined plate 451 and the second inclined plate 452 are respectively connected to the two sides of the support plate 453 along the second direction.

[0129] In this embodiment, the first inclined plate 451 and the second inclined plate 452 can not only provide support for the support plate 453 to stably support the heat exchange core 2, but also guide the airflow, reduce the airflow obstruction in the area around the first inclined plate 451 and the heat exchange core 2, and reduce the airflow obstruction in the area around the second inclined plate 452 and the heat exchange core 2, thereby reducing wind resistance.

[0130] In one embodiment, please refer to Figure 3 , Figures 6 to 8 The heat exchange core 2 includes an intersecting air supply outlet surface 2c and an exhaust outlet surface 2d. The connection between the air supply outlet surface 2c and the exhaust outlet surface 2d is a first corner 201, which is accommodated in the opening groove 45a.

[0131] In this embodiment, the first corner 201 is accommodated in the opening slot 45a, allowing the outdoor airflow after heat exchange from the supply air outlet 2c to flow under the guidance of the first inclined plate 451, reducing dead airflow angles. The indoor airflow after heat exchange from the exhaust air outlet 2d can flow under the guidance of the second inclined plate 452, reducing dead airflow angles, decreasing duct resistance, and lowering the overall unit speed and noise.

[0132] The first inclined plate 451 can be roughly parallel to the exhaust air outlet surface 2d, and the second inclined plate 452 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 451, and the direction of the indoor airflow out of the heat exchange core 2 is roughly parallel to the second inclined plate 452, making the airflow path smoother.

[0133] In one embodiment, please refer to Figures 5 to 7The heat exchange core 2 includes multiple heat exchange units 210, which are arranged along a first direction. That is, each heat exchange unit 210 can be disassembled and reassembled to form 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 45a one by one and slide within the opening groove 45a along the first direction, thus arranging the multiple heat exchange units 210 along the first direction and reducing assembly difficulty.

[0134] In one embodiment, please refer to Figures 3 to 8 The separator 4 includes a guide plate 46 disposed on the support 45, which abuts against one side of the heat exchange core 2 along the second direction. This design allows for a relatively small opening slot 45a, preventing the slot wall from obstructing the heat exchange core 2. During the insertion of the heat exchange core 2 into the opening slot 45a along the third direction, the guide plate 46 guides the heat exchange core 2, reducing assembly skill requirements and improving assembly efficiency. The guide plate 46 also strengthens the support for the heat exchange core 2, preventing it from becoming unstable and detaching from the opening slot 45a. The guide plate 46 has a simple structure and a small contact area with the heat exchange core 2, minimizing its impact on the heat exchange core 2.

[0135] In one embodiment, please refer to Figures 3 to 8 The separator 4 includes two side frames 47, each side frame 47 having a vent 47a. The two side frames 47 are connected to opposite sides of the support body 45 along the second direction, and the heat exchange core 2 abuts against the two side frames 47.

[0136] Vent 47a is used for airflow. For example, one vent 47a may be connected to the supply air duct 102a, and the other vent 47a may be connected to the exhaust air duct 104a. The supply air outlet 2c faces the vent 47a of one of the frame 47, and the exhaust air outlet 2d faces the vent 47a of the other frame 47. Outdoor airflow from the supply air outlet 2c enters the supply air duct 102a through the vent 47a. Indoor airflow from the exhaust air outlet 2d enters the exhaust air duct 104a through the vent 47a.

[0137] In this embodiment, during the installation of the heat exchange core 2, the heat exchange core 2 slides from the first side in a third direction along the frame 47 to the second side into the opening slot 45a, effectively reducing the assembly difficulty. The frame 47 can provide support for the heat exchange core 2, so that the heat exchange core 2 can be stably kept tilted and upright on the chassis 111.

[0138] The shape of the frame 47 is not limited, and the area enclosed by the frame 47 can be a vent 47a. For example, one frame 47 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 47 can also be approximately quadrilateral, with the frame 47 approximately abutting against the periphery of the air supply outlet surface 2c. The other frame 47 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 47 can also be approximately quadrilateral, with the frame 47 approximately abutting against the periphery of the exhaust outlet surface 2d.

[0139] In one embodiment, please refer to Figure 2 , Figures 5 to 8 The fresh air device includes a stop member 5. One end of the frame 47 along a third direction is connected to the support body 45. The stop member 5 is located at the end of the frame 47 along a third direction away from the support body 45, and abuts against the part of the heat exchange core 2 along a third direction away from the support body 45. The stop member 5 can prevent the heat exchange core 2 from detaching from the first side of the third direction from the outer casing 1. The stop member 5, the frame 47, and the support body 45 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 4.

[0140] For example, please refer to Figure 2 , Figures 5 to 8 There can be multiple stop members 5, at least one stop member 5 abuts against the second corner of the heat exchange core 2, and at least one stop member 5 abuts against the third corner of the heat exchange core 2.

[0141] The stop 5 can be detachably connected to the partition 4. For example, by screws or bolts. For example, the stop 5 can be detachably connected to the partition plate 41, or to the isolation plate 42.

[0142] The shape of the stop 5 is not limited; for example, the stop 5 may be generally sheet-shaped.

[0143] 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.

[0144] 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; Heat exchange core; Fan; A partition defines the space within the housing as a heat exchange chamber and a fan chamber, the heat exchange core is located within the heat exchange chamber, and the fan is located within the fan chamber. The partition is an integrally formed structure.

2. The fresh air equipment according to claim 1, characterized in that, The heat exchange core extends along a first direction, and the partition includes a partition plate and an isolation plate. The partition plate and the isolation plate are respectively connected to both sides of the heat exchange core along a second direction. The partition plate divides the heat exchange cavity into a return air channel and a supply air channel, and the isolation plate divides the heat exchange cavity into a fresh air channel and an exhaust air channel. The first direction and the second direction are perpendicular.

3. The fresh air equipment according to claim 2, characterized in that, The return air duct is located on the first side of the supply air duct along a third direction, and the fresh air duct is located on the first side of the exhaust air duct 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 outer casing has a return air inlet and a supply air inlet formed on the first sidewall along the second direction, and a fresh air inlet and an exhaust air inlet formed on the second sidewall along the second direction. The return air inlet is connected to the return air channel, the fresh air inlet is connected to the fresh air channel, and both the supply air inlet and the exhaust air inlet are connected to the fan cavity.

5. The fresh air equipment according to claim 4, characterized in that, The partition plate includes a guide plate body, the surface of the guide plate body facing the first sidewall is a return air guide surface, the return air guide surface is a part of the surface of the return air channel, and the return air guide surface includes a recessed area that is recessed away from the first sidewall.

6. The fresh air equipment according to claim 2, characterized in that, The air supply channel includes an expansion section, the cross-sectional area of ​​which increases from away from the fan cavity toward closer to the fan cavity.

7. The fresh air equipment according to claim 2, characterized in that, The partition includes a partition plate, the surface of which is part of the surface of the fan cavity, one end of which is connected to the partition plate in a third direction, and a portion of which protrudes toward the partition plate.

8. The fresh air equipment according to claim 2, characterized in that, The separator includes an air expansion plate, the surface of which is part of the surface of the fan cavity. One end of the air expansion plate is connected to the isolation plate in a third direction, and the other end of the air expansion plate extends obliquely away from the isolation plate in a third direction.

9. The fresh air equipment according to any one of claims 1 to 8, characterized in that, The separator includes a support body having an opening groove that opens toward the heat exchange core, a portion of which is accommodated.

10. The fresh air equipment according to claim 9, characterized in that, The heat exchange core extends along a first direction, and the support body is located on the second side of the heat exchange core along a third direction. The support body includes a first inclined plate, a second inclined plate, and a support plate. A portion of the support plate is recessed in a direction away from the heat exchange core to form the opening groove. The first inclined plate and the second inclined plate are respectively connected to the two sides of the support plate along the second direction.

11. The fresh air equipment according to claim 10, characterized in that, The heat exchange core includes intersecting air supply outlet surface and air exhaust outlet surface, and the connection between the air supply outlet surface and the air exhaust outlet surface is a first corner, which is accommodated in the opening groove.

12. The fresh air equipment according to claim 10, characterized in that, The heat exchange core includes multiple heat exchange units, which are arranged along a first direction.

13. The fresh air equipment according to claim 9, characterized in that, The separator includes a guide plate disposed on the support body, the guide plate abutting against one side of the heat exchange core along the second direction.

14. The fresh air equipment according to claim 9, characterized in that, The separator includes two side frames with vents formed thereon. The two side frames are connected to opposite sides of the support body along a second direction. The heat exchange core abuts against the two side frames.

15. The fresh air equipment according to claim 14, characterized in that, The fresh air device includes a stop member. One end of the frame along a third direction is connected to the support body. The stop member is located at the end of the frame along a third direction away from the support body. The stop member abuts against the portion of the heat exchange core along a third direction away from the support body.

16. The fresh air equipment according to any one of claims 1 to 8, characterized in that, The outer casing includes a housing, which has a chassis and multiple side plates. The multiple side plates are all disposed on the same side of the chassis in the thickness direction. The housing is an integrally formed structure.

17. The fresh air equipment according to any one of claims 1 to 8, characterized in that, The fresh air equipment includes a partition plate that divides the fan cavity into an independent air supply chamber and an air exhaust chamber. The partition plate includes a bent portion that bends toward the air supply chamber.

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