Heat exchange device

Abstract

The utility model relates to the technical field of air conditioning, and discloses a heat exchange device. The heat exchange device comprises a shell and an air duct component, the shell is provided with a fresh air inlet, a fresh air outlet, an air return port and an exhaust port, the air duct component is arranged in the shell and suitable for defining a fresh air duct and an air return duct, the fresh air duct comprises a first air inlet cavity and a first air outlet cavity, and the air return duct comprises a second air inlet cavity and a second air outlet cavity; the air duct component further defines a containing space used for containing the heat exchange core, the first air inlet cavity and the second air inlet cavity are located on one side of the containing space in the length direction, and the first air outlet cavity and the second air outlet cavity are located on the other side of the containing space in the length direction. The air duct component is an integrally-formed piece. According to the heat exchange device disclosed by the embodiment of the invention, the number of the air duct parts can be reduced, the step of connecting a plurality of structures is omitted, the production cost is reduced, the production efficiency is improved, the structural reliability of the air duct parts is improved, and the use reliability of the heat exchange device is improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of air conditioning technology, in particular to a heat exchange device. BACKGROUND

[0002] The heat exchange device can improve indoor air, meet the needs of ventilation and purification. It can pass the fresh air in the room into the room after purification treatment, or can pass the dirty air in the room to the outdoor, thereby realizing air exchange to meet the daily needs of users.

[0003] The heat exchange device in the related art has many components and complex assembly. Therefore, there is room for improvement. CONTENT OF THE UTILITY MODEL

[0004] The present disclosure aims to at least solve one of the technical problems existing in the related art. To this end, some embodiments of the present disclosure propose a heat exchange device, which has high production efficiency, low production cost and high use reliability.

[0005] The heat exchange device according to the embodiments of the present disclosure comprises: a shell provided with a fresh air inlet, a fresh air outlet, a return air inlet and an exhaust air outlet; a duct component provided in the shell and adapted to define a fresh air duct and a return air duct, the fresh air duct comprising a first air inlet cavity and a first air outlet cavity in communication, the first air inlet cavity being in communication with the fresh air inlet, the first air outlet cavity being in communication with the fresh air outlet, the return air duct comprising a second air inlet cavity and a second air outlet cavity in communication, the second air inlet cavity being in communication with the return air inlet, the second air outlet cavity being in communication with the exhaust air outlet.

[0006] The duct component also defines a containing space for containing a heat exchange core, the containing space being located between the first air inlet cavity and the first air outlet cavity, and the containing space being located between the second air inlet cavity and the second air outlet cavity, so that the airflow flowing through the fresh air duct and the return air duct is heat exchanged in the heat exchange core; the length direction of the containing space extends along a first direction, the first air inlet cavity and the second air inlet cavity are located on one side of the length direction of the containing space, and the first air outlet cavity and the second air outlet cavity are located on the other side of the length direction of the containing space.

[0007] The duct component is an integrally formed part.

[0008] The heat exchange device according to the embodiments of the present disclosure, by setting the duct component as an integrally formed part, on the one hand, the number of components of the duct component can be reduced, and the connection steps of multiple structures can be omitted, thereby the production cost can be reduced, the production efficiency can be improved, on the other hand, the structural reliability of the duct component can be improved, thereby the use reliability of the heat exchange device can be improved.

[0009] In some embodiments, the air duct component is an integral foamed piece.

[0010] In some embodiments, the air duct component comprises: a frame body comprising a first side plate and a second side plate oppositely arranged in a first direction, the fresh air inlet and the exhaust air outlet being arranged in a second direction corresponding to the first side plate, the fresh air outlet and the return air inlet being arranged in the second direction corresponding to the second side plate, the first direction and the second direction being perpendicular to each other; an air outlet partition arranged in the frame body and defining at least part of the first air outlet cavity and the second air outlet cavity with the frame body; an air inlet partition arranged in the frame body and defining at least part of the first air inlet cavity and the second air inlet cavity with the frame body.

[0011] The air outlet partition and the air inlet partition are arranged in the second direction, the containing space is located between the air outlet partition and the air inlet partition, and the frame body, the air outlet partition and the air inlet partition are integrally formed.

[0012] In some embodiments, the first air outlet cavity comprises a fresh air fan accommodating cavity, and the second air outlet cavity comprises a return air fan accommodating cavity, the fresh air fan accommodating cavity and the return air fan accommodating cavity being arranged in the first direction.

[0013] In some embodiments, the air outlet partition comprises: a first air outlet partition plate connected to the first side plate at one end in the first direction; a second air outlet partition plate arranged in the first direction and staggered in a third direction with the first air outlet partition plate, the second air outlet partition plate being connected to the second side plate at one end in the first direction, the third direction being perpendicular to the first direction and the second direction; and a third air outlet partition plate connected to the frame body at one end in the second direction and connected between the first air outlet partition plate and the second air outlet partition plate at the other end in the second direction; wherein the third air outlet partition plate, the first air outlet partition plate and the frame body define the return air fan accommodating cavity, and the third air outlet partition plate, the second air outlet partition plate and the frame body define the fresh air fan accommodating cavity.

[0014] In some embodiments, the first air outlet partition is connected to the third air outlet partition in a circular arc transition towards the accommodation space; and / or, a first air outlet flow guide surface is provided on a side of the first air outlet partition facing the accommodation space, the first air outlet flow guide surface gradually moves away from the accommodation space in the first direction from the first side plate to the second side plate; and / or, an end of the first air outlet partition close to the second air outlet partition in the third direction is curved towards the accommodation space for guiding air in the accommodation space into the return air fan accommodating cavity; and / or, a side of the second air outlet partition facing the accommodation space is connected to the third air outlet partition in a circular arc transition; and / or, a second air outlet flow guide surface is provided on a side of the second air outlet partition facing the accommodation space, the second air outlet flow guide surface gradually moves away from the accommodation space in the first direction from the second side plate to the first side plate; and / or, an end of the second air outlet partition close to the first air outlet partition in the third direction is curved towards the accommodation space for guiding air in the accommodation space into the fresh air fan accommodating cavity.

[0015] In some embodiments, at least a part of the first air inlet cavity and the second air inlet cavity are arranged in a third direction, the third direction being perpendicular to the first direction and the second direction; the frame further comprises an end plate, the end plate being connected to an end of the first side plate and the second side plate extending in the third direction respectively in the first direction; the air inlet partition comprises a first air inlet partition, the first air inlet partition being connected to the first side plate and the second side plate in the first direction respectively, the first air inlet cavity being at least partially located on a side of the first air inlet partition away from the end plate, and the second air inlet cavity being at least partially located between the first air inlet partition and the end plate.

[0016] In some embodiments, the frame further comprises a third side plate, the third side plate being connected to the first side plate and the second side plate in the first direction respectively; the air inlet partition comprises a second air inlet partition, the second air inlet partition being arranged opposite to the first air inlet partition in the second direction and connected to a side of the first air inlet partition close to the third side plate, and the second air inlet cavity being at least partially located between the second air inlet partition and the third side plate.

[0017] In some embodiments, the air duct component has a first air outlet communicating with the fresh air outlet and a second air outlet communicating with the exhaust air outlet, the heat exchange device further comprises: a heat exchange core arranged in the accommodation space and cooperating with the air duct component to form the fresh air duct and the return air duct, the fresh air duct being a fresh air duct, the return air duct being a return air duct; a fresh air fan rotatably arranged in the first air outlet cavity and located between the heat exchange core and the first air outlet in the air flow direction; and a return air fan rotatably arranged in the second air outlet cavity and located between the heat exchange core and the second air outlet in the air flow direction.

[0018] In some embodiments, the length direction of the heat exchange core extends along the first direction, the peripheral wall of the heat exchange core has a first air inlet face, a first air outlet face, a second air inlet face and a second air outlet face, the first air inlet face and the second air inlet face are arranged at an angle, the first air inlet face and the second air outlet face are arranged at an angle, the first air outlet face and the second air outlet face are arranged at an angle, and the first air outlet face and the second air inlet face are arranged at an angle; the first air inlet cavity is located between the fresh air inlet and the first air inlet face, the first air outlet cavity is located between the fresh air outlet and the first air outlet face, the second air inlet cavity is located between the return air outlet and the second air inlet face, and the second air outlet cavity is located between the exhaust air outlet and the second air outlet face; and / or, the heat exchange device further comprises: a fresh air filter arranged in the first air inlet cavity.

[0019] Additional aspects and advantages of the present disclosure will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and / or additional aspects and advantages of the present disclosure will become apparent and be readily appreciated from the following description, including the appended drawings.

[0021] Figure 1 Structure diagram of a heat exchange device according to some embodiments of the present disclosure;

[0022] Figure 2 Structure exploded view of a heat exchange device according to some embodiments of the present disclosure;

[0023] Figure 3 Front view of a heat exchange device according to some embodiments of the present disclosure;

[0024] Figure 4 Structure cross-sectional view along line A-A in FIG. 4; Figure 3

[0025] ​Figure 5 For along Figure 3 Structural cross-sectional view of the middle BB line;

[0026] Figure 6 This is a simplified structural diagram of a heat exchange apparatus according to some embodiments of the present disclosure;

[0027] Figure 7 A simplified structural diagram of a heat exchange apparatus according to other embodiments of this disclosure;

[0028] Figure 8 This is a schematic diagram of the structure of the air duct component of a heat exchange device according to some embodiments of the present disclosure;

[0029] Figure 9 for Figure 8 The diagram shows the assembly of the air duct components and the heat exchange core.

[0030] Figure 10 for Figure 8 Front view of the air duct component shown;

[0031] Figure 11 For along Figure 10 Structural cross-sectional view of the CC line;

[0032] Figure 12 for Figure 8 A side view of the air duct component shown;

[0033] Figure 13 For along Figure 12 Structural cross-sectional view of the DD line in the middle;

[0034] Figure 14 For along Figure 10 Structural cross-sectional view of the EE line;

[0035] Figure 15 For along Figure 10 Structural cross-sectional view of the FF line;

[0036] Figure 16 for Figure 15 The structural cross-sectional view of the air duct components and heat exchange core shown in the figure;

[0037] Figure 17 For along Figure 10 Structural cross-sectional view of the GG line in the middle;

[0038] Figure 18 for Figure 17 The diagram shows a cross-sectional view of the air duct components and the heat exchange core.

[0039] Figure label:

[0040] Heat exchange device 100

[0041] The shell 10,

[0042] The shell 11, fresh air inlet 1101, fresh air outlet 1102, return air inlet 1103, exhaust air outlet 1104, first side wall 111, second side wall 112, hanging hook 113, bottom wall 1141, top wall 1142, side wall 1143,

[0043] The air duct component 12, first air inlet 1201, first air outlet 1202, second air inlet 1203, second air outlet 1204, containing space 1205,

[0044] Fresh air duct 121, first air inlet cavity 1211, first air inlet side duct wall 1211a, second air inlet side duct wall 1211b, first part 1211c, second part 1211d, third air inlet side duct wall 1211e, first positioning rib 1211f, second positioning rib 1211g, first air outlet cavity 1212, fresh air fan accommodating cavity 1212a, first heat exchange cavity 1212b, first air outlet side duct wall 1212c, first air outlet flow guide surface 1212d,

[0045] Return air duct 122, second air inlet cavity 1221, second air outlet cavity 1222, return air fan accommodating cavity 1222a, second heat exchange cavity 1222b, second air outlet side duct wall 1222c, second air outlet flow guide surface 1222d,

[0046] Frame 123, first side plate 1231, second side plate 1232, third side plate 1233, end plate 1234,

[0047] Air outlet separator 124, first limiting groove 1240, first air outlet partition 1241, second air outlet partition 1242, third air outlet partition 1243,

[0048] Air inlet separator 125, second limiting groove 1250, first air inlet partition 1251, second air inlet partition 1252,

[0049] Heat exchange core 20, first air inlet surface 201a, first air outlet surface 201b, second air inlet surface 202a, second air outlet surface 202b, first corner 21, second corner 22, first intersection line 23, second intersection line 24,

[0050] Fresh air fan 30, return air fan 40, fresh air filter 50, return air filter 60. DETAILED DESCRIPTION

[0051] Embodiments of the present disclosure are described below in detail with reference to examples shown in the drawings, wherein the same or similar numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present disclosure, and cannot be understood as a limitation on the present disclosure.

[0052] In the description of the present disclosure, it should be understood that the orientation or positional relationship indicated by the terms "center", "transverse", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present disclosure. In addition, the features defined with "first", "second" can be explicitly or implicitly included one or more features. In the description of the present disclosure, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0053] In the description of the present disclosure, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0054] Some embodiments of the present disclosure provide a structure of a heat exchange device. The heat exchange device can meet the dual needs of ventilation and purification, can exhaust the dirty air in the room and introduce fresh air from the outside, and the heat exchange device uses a heat exchange core to exchange sensible heat and latent heat, realizes maximum heat / cold recovery, adjusts the temperature of fresh air, and provides fresh air with suitable temperature for the room, while realizing environmental protection and energy saving. Such heat exchange device can be applied to various places that need to improve indoor air quality and save energy, such as residences, office buildings, hotels, hospitals, schools, laboratories, computer rooms, catering places, entertainment places, etc.

[0055] Generally, the heat exchange device comprises a shell, a heat exchange core, a fresh air fan and a return air fan.

[0056] The shell has a fresh air duct and a return air duct, and the shell is provided with a fresh air inlet, a fresh air outlet, a return air inlet and an exhaust air outlet. The fresh air duct communicates the fresh air inlet and the fresh air outlet, and the return air duct communicates the return air inlet and the exhaust air outlet.

[0057] The heat exchange core is arranged in the shell, and the air flowing through the fresh air duct and the return air duct exchanges heat in the heat exchange core. For example, the heat exchange core can have a first heat exchange flow channel and a second heat exchange flow channel. The first heat exchange flow channel is located in the fresh air duct in the air flow direction, that is, the first heat exchange flow channel communicates with the fresh air duct. The second heat exchange flow channel is located in the return air duct in the air flow direction, that is, the second heat exchange flow channel communicates with the return air duct.

[0058] The fresh air fan is rotatably arranged in the fresh air duct and located between the heat exchange core and the fresh air outlet in the air flow direction. The fresh air fan provides power for the flow of outdoor air. When the fresh air fan is working, outdoor air can enter the fresh air duct from the fresh air inlet, flow through the first heat exchange flow channel of the heat exchange core, exchange heat with the heat exchange core, then flow out of the first heat exchange flow channel, and be discharged to the indoor through the fresh air outlet.

[0059] The return air fan is rotatably arranged in the return air duct and located between the heat exchange core and the exhaust outlet in the air flow direction. The return air fan provides power for the flow of indoor air. When the return air fan is working, indoor air can enter the return air duct from the exhaust outlet, flow through the second heat exchange flow channel of the heat exchange core, exchange heat with the heat exchange core, then flow out of the second heat exchange flow channel, and be discharged to the outdoor through the exhaust outlet.

[0060] For example, when the heat exchange core is cooling, the air in the fresh air duct exchanges heat with the heat exchange core and the temperature and humidity decrease, so that low-temperature and low-humidity air can be delivered to the indoor. When the heat exchange core is heating, the air in the fresh air duct exchanges heat with the heat exchange core and the temperature and humidity increase, so that high-temperature and high-humidity air can be delivered to the indoor. In addition, the air in the first heat exchange flow channel and the air in the second heat exchange flow channel can exchange heat in the same direction to recover cold energy in summer or heat energy in winter.

[0061] The heat exchange device further comprises a control device, which is mainly used for controlling the rotating speed of the fresh air fan and the rotating speed of the return air fan, etc. The control device is connected with the fresh air fan, the return air fan, etc. through a data line to transmit communication information.

[0062] The control device comprises a processor, which can include a central processing unit (CPU), a microprocessor, an application specific integrated circuit (ASIC), and can be configured to perform the corresponding operations described in the control device when the processor executes a program stored in a non-transitory computer readable medium coupled to the control device.

[0063] The non-transitory computer-readable storage medium can include a magnetic storage device (e.g., hard disk, floppy disk, or magnetic tape), a smart card or flash memory device (e.g., an erasable programmable read-only memory (EPROM), card, stick, or key drive).

[0064] The heat exchange device according to some embodiments of the present disclosure is an indoor unit. The heat exchange device is usually installed on the roof, for example, can be installed in the indoor ceiling.

[0065] The heat exchange device 100 according to some embodiments of the present disclosure is described below with reference to the accompanying drawings.

[0066] Please refer to Figures 1-5 The heat exchange device 100 according to some embodiments of the present disclosure includes a housing 11, the housing 11 is provided with a fresh air inlet 1101, a fresh air outlet 1102, an air return port 1103, and an exhaust port 1104.

[0067] The heat exchange device 100 further includes an air duct component 12, the air duct component 12 is arranged in the housing 11, and the air duct component 12 is adapted to define a fresh air duct 121 and an air return duct 122, the fresh air duct 121 is communicated between the fresh air inlet 1101 and the fresh air outlet 1102, and the air return duct 122 is communicated between the air return port 1103 and the exhaust port 1104.

[0068] The fresh air duct 121 includes a first air inlet cavity 1211 and a first air outlet cavity 1212 in communication, the first air inlet cavity 1211 is communicated with the fresh air inlet 1101, and the first air outlet cavity 1212 is communicated with the fresh air outlet 1102, and the air return duct 122 includes a second air inlet cavity 1221 and a second air outlet cavity 1222 in communication, the second air inlet cavity 1221 is communicated with the air return port 1103, and the second air outlet cavity 1222 is communicated with the exhaust port 1104.

[0069] Please refer to Figure 2 , Figure 4 and Figure 5 The air duct component 12 further defines a containing space 1205 for containing the heat exchange core 20, the containing space 1205 is located between the first air inlet cavity 1211 and the first air outlet cavity 1212, and the containing space 1205 is located between the second air inlet cavity 1221 and the second air outlet cavity 1222, so that the airflow flowing through the fresh air duct 121 and the air return duct 122 is heat exchanged in the heat exchange core 20.

[0070] Specifically, the first air inlet cavity 1211 is connected to the fresh air inlet 1101 and the first heat exchange channel of the heat exchange core 20, and the first air outlet cavity 1212 is connected to the fresh air outlet 1102 and the first heat exchange channel of the heat exchange core 20. In this way, the air entering the shell 10 from the fresh air inlet 1101 can flow through the first air inlet cavity 1211, the first heat exchange channel of the heat exchange core 20, and the first air outlet cavity 1212 in sequence, and finally be discharged from the fresh air outlet 1102.

[0071] The second air inlet cavity 1221 is connected to the return air outlet 1103 and the second heat exchange channel of the heat exchange core 20, and the second air outlet cavity 1222 is connected to the exhaust air outlet 1104 and the second heat exchange channel of the heat exchange core 20. In this way, the air entering the shell 10 from the return air outlet 1103 can flow through the second air inlet cavity 1221, the second heat exchange channel of the heat exchange core 20, and the second air outlet cavity 1222 in sequence, and finally be discharged from the exhaust air outlet 1104.

[0072] In some embodiments, the length direction of the containing space 1205 extends along a first direction, the first air inlet cavity 1211 and the second air inlet cavity 1221 are located on one side of the length direction of the containing space 1205, and the first air outlet cavity 1212 and the second air outlet cavity 1222 are located on the other side of the length direction of the containing space 1205. The first direction here can be a first horizontal direction, for example Figure 4 and Figure 5 the left-right direction in the above.

[0073] The air duct component 12 is an integrally formed member. That is, the air duct component 12 can be prepared by an integrally forming process.

[0074] According to the heat exchange device 100 of the embodiments of the present disclosure, by setting the air duct component 12 as an integrally formed member, on the one hand, the number of components of the air duct component 12 can be reduced, and the connection steps of multiple structures can be omitted, thereby reducing production cost and improving production efficiency, and on the other hand, the structural reliability of the air duct component 12 can be improved, thereby improving the use reliability of the heat exchange device 100.

[0075] In some embodiments, the air duct component 12 is an integrally foamed member. For example, the air duct component 12 can be an EPP foam (polypropylene plastic foaming material), so that the air duct component 12 has the advantages of light weight, good heat insulation effect, and good sound absorption effect. For another example, the air duct component 12 can be an EPS foam (foamed polystyrene), so that the air duct component 12 has the advantages of strong anti-seismic and anti-pressure capacity and good elasticity.

[0076] In the above technical solution, by setting the air duct component 12 as an integrally foamed member, the mass of the air duct component 12 can be reduced, the noise reduction, heat resistance, and flame retardation effects can be improved, the time and cost for pasting thermal insulation cotton can be avoided, and the manufacturing efficiency can be improved and the cost can be reduced.

[0077] Please refer again to Figures 1-5 In some embodiments, the shell 10 has a first side wall 111 and a second side wall 112, the first side wall 111 and the second side wall 112 are oppositely arranged in a first direction, and the first side wall 111 and the second side wall 112 both extend in a second direction. The first direction here can be a first horizontal direction, for example Figure 4 and Figure 5 the left-right direction, and the second direction can be a second horizontal direction, for example Figure 4 and Figure 5 the front-back direction.

[0078] The fresh air inlet 1101 and the exhaust outlet 1104 are both arranged on the first side wall 111, and the fresh air inlet 1101 and the exhaust outlet 1104 are arranged in the second direction, that is, the fresh air inlet 1101 and the exhaust outlet 1104 are arranged in the length direction of the first side wall 111.

[0079] The fresh air outlet 1102 and the return air inlet 1103 are both arranged on the second side wall 112, and the fresh air outlet 1102 and the return air inlet 1103 are arranged in the second direction, that is, the fresh air outlet 1102 and the return air inlet 1103 are arranged in the length direction of the second side wall 112.

[0080] In the above technical solution, by arranging the fresh air inlet 1101 and the exhaust outlet 1104 on the same side wall, it is convenient to connect the pipeline connected to the outdoor side on the same side wall, by arranging the fresh air outlet 1102 and the return air inlet 1103 on the same side wall, it is convenient to connect the pipeline connected to the indoor side on the same side wall, which is conducive to the arrangement of the pipeline, so as to simplify the arrangement of the pipeline, make the pipeline arrangement more neat, and also conducive to shortening the length of the pipeline and reducing the material cost.

[0081] Please refer again to Figures 1-5 and further refer to Figure 6 and Figure 7 In some embodiments, the shell 11 can be a cuboid structure, the shell 11 includes a bottom wall 1141, a top wall 1142 and four side walls 1143, the fresh air inlet 1101 and the exhaust outlet 1104 are arranged on one of the side walls 1143, and the fresh air outlet 1102 and the return air inlet 1103 are arranged on another side wall 1143. The side wall 1143 can be provided with a hook 113 to hoist the heat exchange device 100 on the ceiling. The shell 11 as an appearance part of the heat exchange device 100 can protect the structure of the air duct part 12 and the like from being damaged, and on the other hand, all the structures can be integrated, which is convenient for assembly and disassembly.

[0082] The air inlet 1101 and the air outlet 1104 can be provided with dampers. When the heat exchange device 100 is working, the dampers can be opened; when the heat exchange device 100 is stopped, the dampers can be closed. By setting the dampers, the opening and closing of the dampers can be controlled according to the state of the heat exchange device 100, so as to avoid that mosquitoes, sundries and the like in the outdoor enter the heat exchange device 100 through the air inlet 1101 and the air outlet 1104 when the heat exchange device 100 is stopped.

[0083] Please refer to Figure 8 and Figure 9 The shape of the air duct component 12 matches the shape of the shell 11. Specifically, the first air inlet 1201 and the second air outlet 1204 are arranged on one side wall of the air duct component 12, and the first air outlet 1202 and the second air inlet 1203 are arranged on the other side wall of the air duct component 12. The fresh air duct 121 connects the first air inlet 1201 and the first air outlet 1202, and the return air duct 122 connects the second air inlet 1203 and the second air outlet 1204.

[0084] The first air inlet 1201 corresponds to and communicates with the position of the air inlet 1101, the first air outlet 1202 corresponds to and communicates with the position of the air outlet 1102, the second air inlet 1203 corresponds to and communicates with the position of the air outlet 1103, and the second air outlet 1204 corresponds to and communicates with the position of the air outlet 1104. Therefore, the fresh air duct 121 connects the air inlet 1101 and the air outlet 1102, and the return air duct 122 connects the air outlet 1103 and the air outlet 1104.

[0085] The air inlet 1101, the air outlet 1102, the air outlet 1103 and the air outlet 1104 can all be circular. The first air inlet 1201 can be circular and correspond to the position and shape of the air inlet 1101. The second air inlet 1203 can be circular and correspond to the position and shape of the air outlet 1103. The shape of the first air outlet 1202 can be quadrilateral, and the shape of the second air outlet 1204 can be quadrilateral. In a plane perpendicular to the first direction, the projection of the first air outlet 1202 is located within the projection of the air outlet 1102, and the projection of the second air outlet 1204 is located within the projection of the air outlet 1104.

[0086] In addition, the line connecting the center of the first air inlet 1201 and the center of the second air outlet 1204 can not be on the same horizontal line, and the line connecting the center of the second air inlet 1203 and the center of the first air outlet 1202 can not be on the same horizontal line, so as to facilitate the arrangement of the fresh air duct 121 and the return air duct 122.

[0087] Please refer to Figure 8 and Figure 9 and further refer to Figure 10In some embodiments, the air duct component 12 comprises a frame 123, the frame 123 comprising a first side plate 1231 and a second side plate 1232, the first side plate 1231 and the second side plate 1232 being oppositely arranged in a first direction.

[0088] The fresh air inlet 1101 and the exhaust outlet 1104 are located corresponding to the first side plate 1231 and are arranged in a second direction. The fresh air outlet 1102 and the return air outlet 1103 are located corresponding to the second side plate 1232 and are arranged in the second direction.

[0089] Specifically, the first side plate 1231 can be provided with a first air inlet 1201 and a second air outlet 1204, the first air inlet 1201 and the second air outlet 1204 can be arranged in the second direction, the fresh air inlet 1101 corresponds to and communicates with the first air inlet 1201 on the first side plate 1231, and the fresh air outlet 1102 corresponds to and communicates with the second air outlet 1204 on the first side plate 1231.

[0090] The second side plate 1232 can be provided with a first air outlet 1202 and a second air inlet 1203, the first air outlet 1202 and the second air inlet 1203 being arranged in the second direction. The fresh air outlet 1102 corresponds to and communicates with the first air outlet 1202 on the second side plate 1232, and the return air outlet 1103 corresponds to and communicates with the second air inlet 1203 on the second side plate 1232.

[0091] The first direction and the second direction are perpendicular to each other. Here, the first direction can be a first horizontal direction, for example, the left-right direction in Figure 4 and Figure 5 The second direction can be a second horizontal direction, for example, the front-back direction in Figure 4 and Figure 5 .

[0092] The air duct component 12 further comprises an air outlet partition 124, the air outlet partition 124 being arranged in the frame 123, and the air outlet partition 124 and the frame 123 defining at least part of the first air outlet cavity 1212 and the second air outlet cavity 1222.

[0093] The air duct component 12 further comprises an air inlet partition 125, the air inlet partition 125 being arranged in the frame 123, and the air inlet partition 125 and the frame 123 defining at least part of the first air inlet cavity 1211 and the second air inlet cavity 1221.

[0094] The air outlet partition 124 and the air inlet partition 125 are arranged in the second direction, and the containing space 1205 is located between the air outlet partition 124 and the air inlet partition 125. The frame 123, the air outlet partition 124 and the air inlet partition 125 are integrally formed.

[0095] For example, the frame 123 is closed on all sides, the frame 123 is closed on one end along the third direction and has an opening on the other end, the air outlet partition 124 is located in an area on one side of the frame 123 along the second direction (for example, a rear area of the frame 123), and the air inlet partition 125 is located in an area on the other side of the frame 123 along the second direction (for example, a front area of the frame 123). In the second direction, the containing space 1205 is located between the air outlet partition 124 and the air inlet partition 125, so that the heat exchange core 20 is located between the air outlet partition 124 and the air inlet partition 125. Figure 10 Figure 10

[0096] Specifically, the frame 123 and the air outlet partition 124 can define at least a part of the first air outlet cavity 1212, and the frame 123, the air outlet partition 124 and the heat exchange core 20 can define at least another part of the first air outlet cavity 1212. The frame 123 and the air outlet partition 124 can define at least a part of the second air outlet cavity 1222, and the frame 123, the air outlet partition 124 and the heat exchange core 20 can define at least another part of the second air outlet cavity 1222. The frame 123, the air inlet partition 125 and the heat exchange core 20 define the first air inlet cavity 1211 of the fresh air duct 121 and the second air inlet cavity 1221 of the return air duct 122.

[0097] In the above technical solution, by setting the air duct component 12 to include the frame 123, the air outlet partition 124 and the air inlet partition 125, the air outlet partition 124 and the air inlet partition 125 are matched with the heat exchange core 20, thereby partitioning the inner cavity of the frame 123, forming the fresh air duct 121 and the return air duct 122 which are not connected to each other, and enabling the heat exchange device 100 to have the air exchange effect of passing fresh air and discharging turbid gas.

[0098] Please refer to Figures 6-10 In some embodiments, the first air outlet cavity 1212 includes a fresh air fan accommodating cavity 1212a, the second air outlet cavity 1222 includes a return air fan accommodating cavity 1222a, and the fresh air fan accommodating cavity 1212a and the return air fan accommodating cavity 1222a are arranged in the first direction.

[0099] ​​Specifically, the first air outlet cavity 1212 of the fresh air duct 121 can include a first heat exchange cavity 1212b and a fresh air fan accommodating cavity 1212a, the frame 123 and the air outlet partition 124 can define the fresh air fan accommodating cavity 1212a, and the frame 123, the air outlet partition 124 and the heat exchange core 20 can define the first heat exchange cavity 1212b. The second air outlet cavity 1222 of the return air duct 122 can include a second heat exchange cavity 1222b and a return air fan accommodating cavity 1222a, the frame 123 and the air outlet partition 124 can define the return air fan accommodating cavity 1222a, and the frame 123, the air outlet partition 124 and the heat exchange core 20 can define the second heat exchange cavity 1222b.

[0100] Since the first air outlet cavity 1212 and the second air outlet cavity 1222 are located on the other side of the length direction of the containing space 1205, and the fresh air fan accommodating cavity 1212a of the first air outlet cavity 1212 and the return air fan accommodating cavity 1222a of the second air outlet cavity 1222 are arranged in the first direction, the fresh air fan 30 and the return air fan 40 can be arranged on one side of the length direction of the heat exchange core 20 and arranged in the length direction of the heat exchange core 20, and the structure is more compact.

[0101] Please refer again to Figures 4-5 , 8- Figure 10 In some embodiments, the air outlet partition 124 includes a first air outlet partition plate 1241, and one end of the first air outlet partition plate 1241 is connected to the first side plate 1231 in the first direction.

[0102] The air outlet partition 124 includes a second air outlet partition plate 1242, the first air outlet partition plate 1241 and the second air outlet partition plate 1242 are arranged in the first direction and staggered in the third direction, one end of the second air outlet partition plate 1242 is connected to the second side plate 1232 in the first direction, and the third direction is perpendicular to the first direction and the second direction. Here, the first direction can be a first horizontal direction, for example, the left-right direction in Figure 4 and Figure 5 , the second direction can be a second horizontal direction, for example, the front-back direction in Figure 4 and Figure 5 , and the third direction can be a vertical direction, for example, the up-down direction in Figure 4 and Figure 5 .

[0103] The air outlet partition 124 includes a third air outlet partition plate 1243, one end of the third air outlet partition plate 1243 is connected to the frame 123 in the second direction, and the other end of the third air outlet partition plate 1243 is connected between the first air outlet partition plate 1241 and the second air outlet partition plate 1242 in the second direction.

[0104] The third air outlet partition plate 1243, the first air outlet partition plate 1241 and the frame 123 define an air return fan accommodating cavity 1222a, and the third air outlet partition plate 1243, the second air outlet partition plate 1242 and the frame 123 define a fresh air fan accommodating cavity 1212a.

[0105] Specifically, the length direction of the heat exchange core 20 extends along the first direction, the peripheral wall of the heat exchange core 20 has a first air inlet face 201a, a first air outlet face 201b, a second air inlet face 202a and a second air outlet face 202b, the first air inlet face 201a and the second air inlet face 202a are arranged at an angle, the first air inlet face 201a is arranged at an angle with the second air outlet face 202b, the first air outlet face 201b is arranged at an angle with the second air outlet face 202b, and the first air outlet face 201b is arranged at an angle with the second air inlet face 202a.

[0106] When the heat exchange core 20 is installed into the accommodation space 1205, the first air outlet partition plate 1241 is arranged opposite to the first air outlet face 201b in the second direction, and the first heat exchange cavity 1212b is at least partially located between the first air outlet partition plate 1241 and the first air outlet face 201b. The second air outlet partition plate 1242 is arranged opposite to the second air outlet face 202b in the second direction, and the second heat exchange cavity 1222b is at least partially located between the second air outlet partition plate 1242 and the second air outlet face 202b.

[0107] For example, one end of the third air outlet partition plate 1243 along the third direction is connected to the end wall of the frame 123, and the other end of the third air outlet partition plate 1243 along the third direction extends to the opening of the frame 123, one end of the third air outlet partition plate 1243 along the second direction is connected to the side wall of the frame 123, and the other end of the third air outlet partition plate 1243 along the second direction is connected to the junction of the first air outlet partition plate 1241 and the second air outlet partition plate 1242.

[0108] In the above technical solution, the air outlet partition 124 is arranged as the first air outlet partition plate 1241, the second air outlet partition plate 1242 and the third air outlet partition plate 1243, which are matched with the heat exchange core 20, thereby partitioning the inner cavity of the frame 123 to divide the fresh air fan accommodating cavity 1212a of the fresh air duct 121 and the air return fan accommodating cavity 1222a of the air return duct 122, so that the heat exchange device 100 has the air exchange effect of passing fresh air and discharging dirty air.

[0109] Please refer to Figure 12 and Figure 13 In some embodiments, one side of the first air outlet partition plate 1241 towards the accommodation space 1205 is connected to the third air outlet partition plate 1243 in a circular arc transition. In this way, the air discharged by the heat exchange core 20 can be guided into the fresh air fan accommodating cavity 1212a, thereby reducing the vortex or rotational flow, reducing the air resistance in the fresh air duct 121, and further reducing the working noise of the whole machine.

[0110] In some embodiments, the first air outlet partition 1241 has a first air outlet guide surface 1212d on a side facing the containing space 1205, the first air outlet guide surface 1212d gradually moves away from the containing space 1205 along the first direction from the first side plate 1231 to the second side plate 1232.

[0111] Specifically, in the embodiment in which the first air outlet cavity 1212 of the fresh air duct 121 includes the first heat exchange cavity 1212b and the fresh air fan accommodating cavity 1212a. When the fresh air fan 30 is working, the air entering the first air inlet cavity 1211 of the fresh air duct 121 from the fresh air inlet 1101 can enter the heat exchange core 20 from the first air inlet surface 201a (for example, enter the first heat exchange flow channel of the heat exchange core 20), and after heat exchange with the heat exchange core 20, flow to the first air outlet cavity 1212 of the fresh air duct 121 from the first air outlet surface 201b, specifically, sequentially flow through the first heat exchange cavity 1212b, the fresh air fan accommodating cavity 1212a of the first air outlet cavity 1212, and finally be discharged from the fresh air outlet 1102.

[0112] In this process, the first air outlet guide surface 1212d can guide the air in the first heat exchange cavity 1212b to the fresh air fan accommodating cavity 1212a along the first direction, so as to reduce the vortex or rotational flow, reduce the air resistance in the fresh air duct 121, and further reduce the working noise of the whole machine.

[0113] Please refer to Figures 15-18 In some embodiments, the first air outlet partition 1241 is curved towards the containing space 1205 at an end close to the second air outlet partition 1242 along the third direction, for guiding the air in the containing space 1205 to enter the return air fan accommodating cavity 1222a.

[0114] That is to say, in the embodiment in which the peripheral wall of the heat exchange core 20 has the first air inlet surface 201a, the first air outlet surface 201b, the second air inlet surface 202a, and the second air outlet surface 202b, when the heat exchange core 20 is installed to the containing space 1205, the part of the first air outlet partition 1241 close to the second air outlet surface 202b is curved towards the second air outlet surface 202b, that is, the part of the first air outlet partition 1241 close to the second air outlet surface 202b is in an arc structure, for guiding the air in the second heat exchange cavity 1222b to flow into the return air fan accommodating cavity 1222a.

[0115] For example, the first air outlet partition plate 1241 is arranged opposite to the first air outlet surface 201b of the heat exchange core 20, one end of the first air outlet partition plate 1241 along the third direction is connected with the frame 123, the other end of the first air outlet partition plate 1241 along the third direction is matched with the heat exchange core 20, the first air outlet partition plate 1241 can separate the first heat exchange cavity 1212b of the first air outlet cavity 1212 from the return air fan containing cavity 1222a of the second air outlet cavity 1222, the other end of the first air outlet partition plate 1241 along the third direction is arranged to be curved towards the second air outlet surface 202b, specifically, the part of the first air outlet partition plate 1241 away from the frame 123 on the side towards the first heat exchange cavity 1212b is arranged to be curved towards the first air outlet surface 201b of the heat exchange core 20, and the part of the first air outlet partition plate 1241 away from the frame 123 on the side towards the return air fan containing cavity 1222a is arranged to be curved towards the second air outlet surface 202b of the heat exchange core 20.

[0116] When the return air fan 40 works, the air in the second air inlet cavity 1221 of the return air duct 122 entering from the return air inlet 1103 can enter the heat exchange core 20 from the second air inlet surface 202a (for example, enter the second heat exchange flow channel of the heat exchange core 20), exchange heat with the heat exchange core 20, and then flow to the second air outlet cavity 1222 of the return air duct 122 from the second air outlet surface 202b, specifically, sequentially flow through the second heat exchange cavity 1222b and the return air fan containing cavity 1222a of the second air outlet cavity 1222, and finally be discharged from the return air outlet 1104. In this process, the part of the first air outlet partition plate 1241 close to the second air outlet surface 202b can guide the air in the second heat exchange cavity 1222b to the return air fan containing cavity 1222a along the third direction, so as to reduce the vortex or rotational flow, reduce the air resistance in the return air duct 122, and further reduce the working noise of the whole machine.

[0117] Please refer again to Figures 8-10 In some embodiments, the second air outlet partition plate 1242 is connected with the third air outlet partition plate 1243 in a circular arc transition on the side towards the containing space 1205. In this way, the air discharged from the heat exchange core 20 can be guided into the return air fan containing cavity 1222a, so as to reduce the vortex or rotational flow, reduce the air resistance in the return air duct 122, and further reduce the working noise of the whole machine.

[0118] In some embodiments, the second air outlet partition plate 1242 has a second air outlet flow guide surface 1222d on the side towards the containing space 1205, the second air outlet flow guide surface 1222d gradually moves away from the containing space 1205 along the first direction from the second side plate 1232 to the first side plate 1231.

[0119] Specifically, in the embodiment in which the second air outlet cavity 1222 of the return air duct 122 comprises the second heat exchange cavity 1222b and the return air fan accommodating cavity 1222a, when the return air fan 40 is working, the air entering the second air inlet cavity 1221 of the return air duct 122 from the return air inlet 1103 can enter the heat exchange core 20 from the second air inlet face 202a (for example, enter the second heat exchange flow channel of the heat exchange core 20), exchange heat with the heat exchange core 20, and then flow to the second air outlet cavity 1222 of the return air duct 122 from the second air outlet face 202b, specifically, sequentially flow through the second heat exchange cavity 1222b and the return air fan accommodating cavity 1222a of the second air outlet cavity 1222, and finally be discharged from the return air outlet 1104.

[0120] In this process, the second air outlet flow guide face 1222d can guide the air in the second heat exchange cavity 1222b to the return air fan accommodating cavity 1222a along the first direction, so as to reduce the vortex or rotational flow, reduce the air resistance in the return air duct 122, and further reduce the working noise of the whole machine.

[0121] Please refer to Figures 15-18 In some embodiments, the second air outlet baffle 1242 is bent towards the containing space 1205 at an end close to the first air outlet baffle 1241 along the third direction, for guiding the air in the containing space 1205 to enter the fresh air fan accommodating cavity 1212a.

[0122] That is, in the embodiment in which the peripheral wall of the heat exchange core 20 comprises the first air inlet face 201a, the first air outlet face 201b, the second air inlet face 202a and the second air outlet face 202b, when the heat exchange core 20 is installed to the containing space 1205, the part of the second air outlet baffle 1242 close to the first air outlet face 201b is bent towards the first air outlet face 201b, for guiding the air in the first heat exchange cavity 1212b to flow into the fresh air fan accommodating cavity 1212a.

[0123] For example, the second air outlet baffle 1242 is arranged opposite to the second air outlet face 202b of the heat exchange core 20, the end of the second air outlet baffle 1242 close to the frame 123 is matched with the heat exchange core 20 along the third direction, the second air outlet baffle 1242 can separate the second heat exchange cavity 1222b of the second air outlet cavity 1222 and the fresh air fan accommodating cavity 1212a of the first air outlet cavity 1212, the end of the second air outlet baffle 1242 close to the frame 123 is bent towards the first air outlet face 201b, specifically, the part of the second air outlet baffle 1242 close to the frame 123 on the side towards the second heat exchange cavity 1222b is bent towards the second air outlet face 202b of the heat exchange core 20, and the part of the second air outlet baffle 1242 close to the frame 123 on the side towards the fresh air fan accommodating cavity 1212a is bent towards the first air outlet face 201b of the heat exchange core 20.

[0124] When the fresh air fan 30 is working, the air in the first air inlet cavity 1211 of the fresh air duct 121 entering from the fresh air inlet 1101 can enter the heat exchange core 20 from the first air inlet face 201a (for example, enter the first heat exchange flow channel of the heat exchange core 20), and after heat exchange with the heat exchange core 20, flow to the first air outlet cavity 1212 of the fresh air duct 121 from the first air outlet face 201b, specifically, sequentially flow through the first heat exchange cavity 1212b and the fresh air fan containing cavity 1212a of the first air outlet cavity 1212, and finally be discharged from the fresh air outlet 1102. In this process, the part of the second air outlet baffle 1242 close to the first air outlet face 201b can guide the air in the first heat exchange cavity 1212b to the fresh air fan containing cavity 1212a along the third direction, so as to reduce the vortex or rotational flow, reduce the air resistance in the fresh air duct 121, and further reduce the working noise of the whole machine.

[0125] Please refer again to Figure 12 and Figure 13 In some embodiments, the first air outlet cavity 1212 has a first air outlet side duct wall 1212c extending along the first direction, and in the second direction, the first air outlet side duct wall 1212c is located between the first heat exchange cavity 1212b and the return air fan containing cavity 1222a.

[0126] Among them, the first air outlet side duct wall 1212c is at least partially curved along the first direction towards the fresh air fan containing cavity 1212a, for guiding the air in the first heat exchange cavity 1212b to flow into the fresh air fan containing cavity 1212a. For example, the first air outlet side duct wall 1212c has a first air outlet guide face 1212d, which is curved along the first direction towards the fresh air fan containing cavity 1212a.

[0127] When the fresh air fan 30 is working, the air in the first air inlet cavity 1211 of the fresh air duct 121 entering from the fresh air inlet 1101 can enter the heat exchange core 20 from the first air inlet face 201a (for example, enter the first heat exchange flow channel of the heat exchange core 20), and after heat exchange with the heat exchange core 20, flow to the first air outlet cavity 1212 of the fresh air duct 121 from the first air outlet face 201b, specifically, sequentially flow through the first heat exchange cavity 1212b and the fresh air fan containing cavity 1212a of the first air outlet cavity 1212, and finally be discharged from the fresh air outlet 1102. In this process, the part of the second air outlet baffle 1242 close to the first air outlet face 201b can guide the air in the first heat exchange cavity 1212b to the fresh air fan containing cavity 1212a along the third direction, so as to reduce the vortex or rotational flow, reduce the air resistance in the fresh air duct 121, and further reduce the working noise of the whole machine.

[0128] And / or, the first air outlet side air duct wall 1212c is at least partially curved in the third direction towards the second air outlet face 202b, for guiding the air in the second heat exchange cavity 1222b to flow into the return air fan accommodating cavity 1222a.

[0129] When the return air fan 40 is working, the air entering the second air inlet cavity 1221 of the return air duct 122 from the return air inlet 1103 can enter the heat exchange core 20 from the second air inlet face 202a (for example, into the second heat exchange flow channel of the heat exchange core 20), exchange heat with the heat exchange core 20, and then flow to the second air outlet cavity 1222 of the return air duct 122 from the second air outlet face 202b, specifically, sequentially flow through the second heat exchange cavity 1222b and the return air fan accommodating cavity 1222a of the second air outlet cavity 1222, and finally be discharged from the return air outlet 1104. In this process, the first air outlet side air duct wall 1212c can guide the air in the second heat exchange cavity 1222b to flow into the return air fan accommodating cavity 1222a in the third direction, so as to reduce the vortex or rotational flow, reduce the air resistance in the return air duct 122, and further reduce the working noise of the whole machine.

[0130] Please refer again to Figure 9 and Figure 10 In some embodiments, the second air outlet cavity 1222 has a second air outlet side air duct wall 1222c extending in the first direction, and in the second direction, the second air outlet side air duct wall 1222c is located between the second heat exchange cavity 1222b and the fresh air fan accommodating cavity 1212a.

[0131] In some embodiments, the second air outlet side air duct wall 1222c is at least partially curved in the first direction towards the return air fan accommodating cavity 1222a, for guiding the air in the second heat exchange cavity 1222b to flow into the return air fan accommodating cavity 1222a. For example, the second air outlet side air duct wall 1222c has a second air outlet flow guide face 1222d, and the second air outlet flow guide face 1222d is curved in the first direction towards the return air fan accommodating cavity 1222a.

[0132] When the return air fan 40 is working, the air entering the second air inlet cavity 1221 of the return air duct 122 from the return air inlet 1103 can enter the heat exchange core 20 from the second air inlet face 202a (for example, enter the second heat exchange flow channel of the heat exchange core 20), exchange heat with the heat exchange core 20, and then flow to the second air outlet cavity 1222 of the return air duct 122 from the second air outlet face 202b (specifically, sequentially flow through the second heat exchange cavity 1222b and the return air fan containing cavity 1222a of the second air outlet cavity 1222), and finally be discharged from the return air outlet 1104. In this process, the second air outlet guide face 1222d can guide the air in the second heat exchange cavity 1222b to flow into the return air fan containing cavity 1222a along the first direction, so as to reduce vortex or rotational flow, reduce the air resistance in the return air duct 122, and further reduce the working noise of the whole machine.

[0133] And / or, the second air outlet side duct wall 1222c is at least partially curved along the third direction towards the direction close to the first air outlet face 201b, for guiding the air in the first heat exchange cavity 1212b to flow into the fresh air fan containing cavity 1212a.

[0134] When the fresh air fan 30 is working, the air entering the first air inlet cavity 1211 of the fresh air duct 121 from the fresh air inlet 1101 can enter the heat exchange core 20 from the first air inlet face 201a (for example, enter the first heat exchange flow channel of the heat exchange core 20), exchange heat with the heat exchange core 20, and then flow to the first air outlet cavity 1212 of the fresh air duct 121 from the first air outlet face 201b (specifically, sequentially flow through the first heat exchange cavity 1212b and the fresh air fan containing cavity 1212a of the first air outlet cavity 1212), and finally be discharged from the fresh air outlet 1102. In this process, the part of the second air outlet side duct wall 1222c close to the first air outlet face 201b can guide the air in the first heat exchange cavity 1212b to flow into the fresh air fan containing cavity 1212a along the third direction, so as to reduce vortex or rotational flow, reduce the air resistance in the fresh air duct 121, and further reduce the working noise of the whole machine.

[0135] Please refer again to Figures 8-11 In some embodiments, the first air inlet cavity 1211 and the second air inlet cavity 1221 are arranged at least partially in the third direction, and the third direction is perpendicular to each of the first direction and the second direction.

[0136] In this way, at least a part of the first air inlet cavity 1211 of the fresh air duct 121 and at least a part of the second air inlet cavity 1221 of the return air duct 122 are arranged in double layers in the third direction, which is beneficial to the layout of the air duct and makes the structure more compact.

[0137] Please refer again to Figure 17 And Figure 18In some embodiments, the frame 123 further comprises an end plate 1234, the end plate 1234 being connected with the first side plate 1231 and the second side plate 1232 at one end of the first side plate 1231 and the second side plate 1232 extending in the third direction respectively.

[0138] The air inlet partition 125 comprises a first air inlet partition 1251, the first air inlet partition 1251 being connected with the first side plate 1231 and the second side plate 1232 at two ends of the first side plate 1231 and the second side plate 1232 in the first direction respectively, the first air inlet cavity 1211 being at least partially located on a side of the first air inlet partition 1251 away from the end plate 1234, and the second air inlet cavity 1221 being at least partially located between the first air inlet partition 1251 and the end plate 1234.

[0139] The first air inlet partition 1251, in cooperation with the frame 123 and the heat exchange core 20, can define at least a part of the first air inlet cavity 1211 and the second air inlet cavity 1221, and the first air inlet partition 1251 can comprise the second air inlet side air duct wall 1211b and the third air inlet side air duct wall 1211e in the above-mentioned embodiments to achieve the flow guiding effect.

[0140] Please refer again to Figure 17 and Figure 18 In some embodiments, the frame 123 further comprises a third side plate 1233, the third side plate 1233 being connected with the first side plate 1231 and the second side plate 1232 at two ends of the first side plate 1231 and the second side plate 1232 in the first direction respectively.

[0141] The air inlet partition 125 comprises a second air inlet partition 1252, the second air inlet partition 1252 being arranged opposite to the third side plate 1233 in the second direction and connected with a side of the first air inlet partition 1251 close to the third side plate 1233, and the second air inlet cavity 1221 being at least partially located between the second air inlet partition 1252 and the third side plate 1233.

[0142] The second air inlet partition 1252, in cooperation with the frame 123 and the heat exchange core 20, can define at least a part of the first air inlet cavity 1211 and the second air inlet cavity 1221, and the second air inlet partition 1252 can comprise the first air inlet side air duct wall 1211a in the above-mentioned embodiments to achieve the flow guiding effect.

[0143] Please refer again to Figure 2 , Figures 4-7 In some embodiments, the air duct component 12 has a first air outlet 1202 communicating with the fresh air outlet 1102 and a second air outlet 1204 communicating with the exhaust air outlet 1104.

[0144] The heat exchange device 100 further comprises a heat exchange core 20, which is arranged in the accommodation space 1205 and cooperates with the air duct component 12 to form a fresh air duct 121 and a return air duct 122.

[0145] The heat exchange device 100 further comprises a fresh air fan 30 and a return air fan 40, the fresh air fan 30 is rotatably arranged in the first air outlet cavity 1212 and located between the heat exchange core 20 and the first air outlet 1202 in the air flow direction, and the return air fan 40 is rotatably arranged in the second air outlet cavity 1222 and located between the heat exchange core 20 and the second air outlet 1204 in the air flow direction.

[0146] The heat exchange core 20 can reduce the temperature and humidity of the air in the fresh air duct 121 in the refrigeration working condition, and can increase the temperature and humidity of the air in the fresh air duct 121 in the heating working condition. Specifically, the state parameters of the fresh air outlet 1102 and the exhaust outlet 1104 can be calculated by setting the enthalpy efficiency and temperature efficiency of the heat exchange core 20 in the refrigeration and heating working conditions. The enthalpy value of the air refers to the energy contained in the air.

[0147] For example, in the case that the fresh air volume and the exhaust air volume are the same, the calculation process of the enthalpy efficiency and the temperature efficiency of the heat exchange core 20 is as follows:

[0148] Enthalpy efficiency: Temperature efficiency: ;

[0149] In the formula, i1, i2, i3 (kJ / kg) represent the enthalpy value of the fresh air inlet 1101, the enthalpy value of the fresh air outlet 1102 and the enthalpy value of the return air outlet 1103; t1, t2, t3 (℃) represent the temperature of the fresh air inlet 1101, the temperature of the fresh air outlet 1102 and the temperature of the return air outlet 1103.

[0150] The calculation formula of the wet air enthalpy value (kJ / kg) is as follows: ;

[0151] In the formula, t (℃) represents the air temperature; d (g / kg) represents the moisture content of the air; and 1.01 (kJ / (kg·K)) represents the average constant pressure specific heat of dry air.

[0152] In some embodiments, the fresh air fan 30 and the return air fan 40 are arranged on one side of the length direction of the heat exchange core 20, and the fresh air fan 30 and the return air fan 40 are arranged in the length direction of the heat exchange core 20. The fresh air fan 30 is arranged in the first air outlet cavity 1212, and the return air fan 40 is arranged in the second air outlet cavity 1222. When the fresh air fan 30 works, it can drive outdoor air to flow to form an air flow. The outdoor air enters the fresh air duct 121 from the fresh air inlet 1101, exchanges heat with the heat exchange core 20, and is discharged to the indoor air from the fresh air outlet 1102. When the return air fan 40 works, it can drive indoor air to flow to form an air flow. The indoor air enters the return air duct 122 from the return air inlet 1103, exchanges heat with the heat exchange core 20, and is discharged to the outdoor air from the exhaust air outlet 1104.

[0153] Please refer again to Figure 2 、 Figures 4-7 In some embodiments, the length direction of the heat exchange core 20 extends along the first direction, and the peripheral wall of the heat exchange core 20 has a first air inlet face 201a, a first air outlet face 201b, a second air inlet face 202a, and a second air outlet face 202b. That is, the cross-sectional shape of the heat exchange core 20 is a polygon, and the number of sides of the polygon is at least 4. For example, the cross-sectional shape of the heat exchange core 20 can be a quadrilateral, a pentagon, a hexagon, etc.

[0154] The first air inlet face 201a and the second air inlet face 202a are arranged at an angle, the first air inlet face 201a and the second air outlet face 202b are arranged at an angle, the first air outlet face 201b and the second air outlet face 202b are arranged at an angle, and the first air outlet face 201b and the second air inlet face 202a are arranged at an angle.

[0155] The first air inlet cavity 1211 is located between the fresh air inlet 1101 and the first air inlet face 201a, the first air outlet cavity 1212 is located between the fresh air outlet 1102 and the first air outlet face 201b, the second air inlet cavity 1221 is located between the return air inlet 1103 and the second air inlet face 202a, and the second air outlet cavity 1222 is located between the exhaust air outlet 1104 and the second air outlet face 202b.

[0156] Specifically, the length directions of the first air inlet face 201a, the first air outlet face 201b, the second air inlet face 202a and the second air outlet face 202b all extend along the first direction. The first air inlet face 201a and the second air outlet face 202b are oppositely arranged in the second direction, and the first air inlet face 201a and the second air outlet face 202b are arranged at an angle. The first air inlet face 201a and the second air inlet face 202a are oppositely arranged in the third direction, and the first air inlet face 201a and the second air inlet face 202a are arranged at an angle. The first air outlet face 201b and the second air inlet face 202a are oppositely arranged in the second direction, and the first air outlet face 201b and the second air inlet face 202a are arranged at an angle. The first air outlet face 201b and the second air outlet face 202b are oppositely arranged in the third direction, and the first air outlet face 201b and the second air outlet face 202b are arranged at an angle.

[0157] In the above technical solution, by arranging the heat exchange core 20 in the above structure, the external structure of the heat exchange core 20 is matched with the internal structure of the air duct component 12, so that the fresh air air duct 121 and the return air air duct 122 can be defined, and the structure is simple and easy to implement.

[0158] In some embodiments, the rotation axis of the fresh air fan 30 and the rotation axis of the return air fan 40 are parallel to each other and both extend along the second direction (e.g. the front-rear direction as shown in Figure 4 and Figure 5 ). That is, the rotation axis of the fresh air fan 30 and the rotation axis of the return air fan 40 are both perpendicular to the length direction of the heat exchange core 20 and to a side wall of the shell 10.

[0159] The fresh air fan 30 and the return air fan 40 can be centrifugal fans with axial air inlet and radial air outlet, because the axial dimension of the centrifugal fan is relatively small compared to the radial dimension.

[0160] Therefore, by arranging the rotation axis of the fresh air fan 30 and the rotation axis of the return air fan 40 to extend along the second direction, i.e. horizontally installing the fresh air fan 30 and the return air fan 40, on the basis of unchanged dimensions of the fresh air fan 30 and the return air fan 40, it is beneficial to reduce the size of the heat exchange device 100 in the second direction, so that the occupied space of the heat exchange device 100 in the horizontal plane can be reduced.

[0161] Please refer again to Figure 2 , Figures 4-7 In some embodiments, the heat exchange device 100 further comprises a fresh air filter 50, which is arranged in the first air inlet cavity 1211. That is, in the air flow direction, the fresh air filter 50 is located between the fresh air inlet 1101 and the first air inlet face 201a of the heat exchange core 20.

[0162] The fresh air filtering piece 50 can filter the air entering the first air inlet cavity 1211 from the fresh air inlet 1101, on the one hand, reduce the pollution of the heat exchange core 20 by dirty air, thereby ensuring the heat exchange effect of the heat exchange core 20, on the other hand, avoid the pollution of outdoor dirty air to indoor air, thereby improving the cleanliness of indoor air, and improving the user experience.

[0163] The fresh air filtering piece 50 can include one filtering structure, or multiple filtering structures. For example, the fresh air filtering piece 50 can include a coarse efficiency filtering structure and a high efficiency filtering structure, which can be integrated, on the one hand, facilitating assembly and replacement, on the other hand, reducing the volume of the fresh air filtering piece 50 occupying the fresh air duct 121, thereby reducing the volume of the heat exchange device 100.

[0164] For example, the coarse efficiency filtering structure as the primary efficiency filtering structure can adopt a non-woven fabric filter core, which can filter large particles of dust and insects in the air into the heat exchange core 20; the high efficiency filtering structure can adopt glass fiber filtering material and melt-blown non-woven filtering material, which can have a high interception effect on particulate matter, bacteria and viruses.

[0165] The first air inlet cavity 1211 and the second air inlet cavity 1221 have different structures, and / or the first air outlet cavity 1212 and the second air outlet cavity 1222 have different structures, and the sum of the volumes of the first air inlet cavity 1211 and the first air outlet cavity 1212 is greater than the sum of the volumes of the second air inlet cavity 1221 and the second air outlet cavity 1222.

[0166] Since the fresh air filtering piece 50 is arranged in the first air inlet cavity 1211 of the fresh air duct 121, the arrangement of the fresh air filtering piece 50 can filter the air and improve the cleanliness of indoor air, but at the same time, it will also increase the air flow resistance in the fresh air duct 121, reduce the air volume of the fresh air entering the room, and also increase the working noise of the whole machine. In the case that the fresh air fan 30 and the return air fan 40 are the same, the speed of the fresh air fan 30 needs to be increased to achieve the same fresh air volume and return air volume, which will also increase the working noise of the whole machine.

[0167] In the case that the structure shape and volume of the heat exchange device 100 are unchanged, the structures of the first air inlet cavity 1211 and the second air inlet cavity 1221 are set to be different, and / or the structures of the first air outlet cavity 1212 and the second air outlet cavity 1222 are set to be different, and the total volume of the first air inlet cavity 1211 and the first air outlet cavity 1212 is greater than the total volume of the second air inlet cavity 1221 and the second air outlet cavity 1222, so that the structures of the fresh air duct 121 and the return air duct 122 are asymmetric, and in the case that the air flow in the fresh air duct 121 is unchanged, increasing the volume of the fresh air duct 121 can generally reduce the air speed in the fresh air duct 121, and according to the pressure loss formula related to air resistance, the reduction of the air speed in the fresh air duct 121 can reduce the air resistance in the fresh air duct 121, thereby reducing the working noise of the whole machine; and in the case that the fresh air volume and the return air volume are the same, the pressure loss in the fresh air duct 121 is reduced, and the rotation speed of the fresh air fan 30 can be reduced to balance the air resistance of the fresh air duct 121 and the return air duct 122, thereby reducing the working noise of the whole machine.

[0168] Therefore, in the case that the fresh air filter 50 is arranged in the first air inlet cavity 1211, the structures of the first air inlet cavity 1211 and the second air inlet cavity 1221 are set to be different, and / or the structures of the first air outlet cavity 1212 and the second air outlet cavity 1222 are set to be different, and the total volume of the first air inlet cavity 1211 and the first air outlet cavity 1212 is greater than the total volume of the second air inlet cavity 1221 and the second air outlet cavity 1222, so that the structures of the fresh air duct 121 and the return air duct 122 are asymmetric, and the air resistance in the fresh air duct 121 can be reduced, thereby reducing the working noise of the whole machine.

[0169] In some embodiments, the first air inlet cavity 1211 and the second air inlet cavity 1221 are arranged at least partially in the third direction, and the structures of the first air inlet cavity 1211 and the second air inlet cavity 1221 are different, and the volume of the first air inlet cavity 1211 is greater than the volume of the second air inlet cavity 1221. In this embodiment, the structures of the first air outlet cavity 1212 and the second air outlet cavity 1222 can be the same, and the volumes of the first air outlet cavity 1212 and the second air outlet cavity 1222 can be set to be equal, for example, the first air outlet cavity 1212 and the second air outlet cavity 1222 can be symmetrically arranged; or the structures of the first air outlet cavity 1212 and the second air outlet cavity 1222 can be different, and the volume of the first air outlet cavity 1212 can be greater than the volume of the second air outlet cavity 1222.

[0170] Therefore, in the case that the structure shape and volume of the heat exchange device 100 are unchanged, the structures of the first air inlet cavity 1211 and the second air inlet cavity 1221 are set to be different, and the volume of the first air inlet cavity 1211 is greater than the volume of the second air inlet cavity 1221, so that the structures of the first air inlet cavity 1211 and the second air inlet cavity 1221 are asymmetric, and the air speed in the first air inlet cavity 1211 can be reduced, thereby reducing the air resistance in the first air inlet cavity 1211, and facilitating the reduction of the working noise of the whole machine.

[0171] In some embodiments, the first air outlet cavity 1212 and the second air outlet cavity 1222 have different structures, and the volume of the first air outlet cavity 1212 is greater than that of the second air outlet cavity 1222. In this embodiment, the first air inlet cavity 1211 and the second air inlet cavity 1221 can have the same structure, and the volumes of the first air inlet cavity 1211 and the second air inlet cavity 1221 can be set to be equal, for example, the first air inlet cavity 1211 and the second air inlet cavity 1221 can be symmetrically arranged; or the first air inlet cavity 1211 and the second air inlet cavity 1221 can have different structures, and the volume of the first air inlet cavity 1211 can be greater than that of the second air inlet cavity 1221.

[0172] Thus, in the case that the structure shape and volume of the heat exchange device 100 are unchanged, the structures of the first air outlet cavity 1212 and the second air outlet cavity 1222 are set to be different, and the volume of the first air outlet cavity 1212 is greater than that of the second air outlet cavity 1222, so that the structures of the first air outlet cavity 1212 and the second air outlet cavity 1222 are asymmetric, which can reduce the air speed in the first air outlet cavity 1212, thereby reducing the air resistance in the first air outlet cavity 1212, and facilitating the reduction of the working noise of the whole machine.

[0173] Please refer again to Figure 4 and Figure 5 In some embodiments, the first air outlet cavity 1212 includes a fresh air fan accommodating cavity 1212a and a first heat exchange cavity 1212b, and the fresh air fan accommodating cavity 1212a and the first heat exchange cavity 1212b are arranged in the second direction; the second air outlet cavity 1222 includes a return air fan accommodating cavity 1222a and a second heat exchange cavity 1222b, and the return air fan accommodating cavity 1222a and the second heat exchange cavity 1222b are arranged in the second direction.

[0174] In the first direction, the fresh air fan accommodating cavity 1212a and the return air fan accommodating cavity 1222a are arranged, and in the second direction, the first heat exchange cavity 1212b is located between the first air outlet surface 201b and the fresh air fan accommodating cavity 1212a, the second heat exchange cavity 1222b is located between the second air outlet surface 202b and the return air fan accommodating cavity 1222a, and the volume of the first heat exchange cavity 1212b is greater than that of the second heat exchange cavity 1222b.

[0175] In addition, since the first air outlet surface 201b and the second air outlet surface 202b are oppositely arranged and angularly arranged in the third direction, the first heat exchange cavity 1212b of the first air outlet cavity 1212 and the second heat exchange cavity 1222b of the second air outlet cavity 1222 are arranged in the third direction.

[0176] Therefore, by arranging the fresh air fan accommodating cavity 1212a and the first heat exchange cavity 1212b of the first air outlet cavity 1212 and the return air fan accommodating cavity 1222a and the second heat exchange cavity 1222b of the second air outlet cavity 1222 in the above manner, the asymmetric arrangement of the first air outlet cavity 1212 and the second air outlet cavity 1222 can be achieved, which is beneficial to reducing the air resistance of the first air outlet cavity 1212, so as to reduce the working noise of the whole machine.

[0177] Please refer again to Figure 6 In some embodiments, the cross-sectional shape of the shell 10 perpendicular to the first direction is a rectangle, and the cross-sectional shape of the heat exchange core 20 perpendicular to the first direction is a square.

[0178] The heat exchange core 20 with a square cross-sectional shape has the advantages of simple structure and small space occupation, and by adjusting the placement position of the heat exchange core 20, the structure and size of the first air inlet cavity 1211, the first air outlet cavity 1212, the second air inlet cavity 1221 and the second air outlet cavity 1222 can be adjusted, so that the fresh air duct 121 and the return air duct 122 are designed asymmetrically, thereby meeting the requirements.

[0179] In some embodiments, the angle between the plane determined by the first direction and the second direction and the first air inlet face 201a is greater than the angle between the plane determined by the first direction and the second direction and the second air inlet face 202a, so that the first air inlet cavity 1211 and the second air inlet cavity 1221 are asymmetrically arranged about the plane determined by the first direction and the second direction.

[0180] Specifically, the first air inlet face 201a and the second air outlet face 202b have a first intersection line 23, the first air outlet face 201b and the second air inlet face 202a have a second intersection line 24, and the second direction is inclined relative to the plane in which the first intersection line 23 and the second intersection line 24 are located, which is equivalent to tilting the heat exchange core 20 with a square cross-sectional shape.

[0181] In this way, the first air inlet face 201a and the second air inlet face 202a are asymmetrically arranged about the plane determined by the first direction and the second direction, and the first air outlet face 201b and the second air outlet face 202b are asymmetrically arranged about the plane determined by the first direction and the second direction, and in combination with the structure of the shell 10, so that at least part of the first air inlet cavity 1211 of the fresh air duct 121 and at least part of the second air inlet cavity 1221 of the return air duct 122 are arranged in double layers in the third direction, and at least part of the first air outlet cavity 1212 of the fresh air duct 121 and at least part of the second air outlet cavity 1222 of the return air duct 122 are arranged in double layers in the third direction.

[0182] Therefore, by setting the cross section of the heat exchange core 20 as a square and by setting the heat exchange core 20 to be inclined, the air flow resistance of the fresh air duct 121 and the return air duct 122 can be balanced, the rotation speed of the fresh air fan 30 in the fresh air duct 121 can be reduced, and thus the noise of the entire machine can be reduced.

[0183] In the embodiment in which the cross section of the housing 10 perpendicular to the first direction is a rectangle and the cross section of the heat exchange core 20 perpendicular to the first direction is a square, the volume of the first air inlet cavity 1211 can be greater than the volume of the second air inlet cavity 1221, and the volume of the first air outlet cavity 1212 and the volume of the second air outlet cavity 1222 can be equal, or the volume of the first air outlet cavity 1212 can be greater than the volume of the second air outlet cavity 1222, so as to realize the asymmetric design of the fresh air duct 121 and the return air duct 122.

[0184] Please refer again to Figure 7 In other embodiments, the cross section of the housing 10 perpendicular to the first direction is a rectangle, and the cross section of the heat exchange core 20 perpendicular to the first direction is a rectangle.

[0185] Since the rectangle has a long side and a short side, for the heat exchange core 20 with a rectangular cross section, the asymmetric design of the fresh air duct 121 and the return air duct 122 can be realized according to the structural characteristics thereof, and by adjusting the placement position of the heat exchange core 20, the structures and sizes of the first air inlet cavity 1211, the first air outlet cavity 1212, the second air inlet cavity 1221, and the second air outlet cavity 1222 can also be adjusted, so that the fresh air duct 121 and the return air duct 122 are designed to be asymmetric, thereby meeting the requirements.

[0186] In some embodiments, the width of the first air inlet face 201a is greater than the width of the second air inlet face 202a, and the width of the first air outlet face 201b is greater than the width of the second air outlet face 202b, so that the first air inlet cavity 1211 and the second air inlet cavity 1221 are arranged asymmetrically with respect to the planes determined by the first direction and the second direction, and the first air outlet cavity 1212 and the second air outlet cavity 1222 are arranged asymmetrically with respect to the planes determined by the first direction and the second direction.

[0187] Since the area of the first air inlet face 201a of the heat exchange core 20 is greater than the area of the second air inlet face 202a, and the area of the first air outlet face 201b of the heat exchange core 20 is greater than the area of the second air outlet face 202b, the first air inlet face 201a and the second air inlet face 202a can be arranged asymmetrically with respect to the planes determined by the first direction and the second direction, and the first air outlet face 201b and the second air outlet face 202b can be arranged asymmetrically with respect to the planes determined by the first direction and the second direction.

[0188] The length-width ratio of the rectangle is in the range of 1.0-1.5, for example, the length-width ratio of the rectangle can be 1.1, 1.2, 1.3, 1.4, 1.5, etc. One of the diagonals of the rectangle can be perpendicular to the plane determined by the first direction and the second direction, or can be arranged at an angle with the plane.

[0189] In this way, the air in the fresh air duct 121 flows through the heat exchange core 20, and due to the large area of the first air inlet face 201a and the first air outlet face 201b, the flow rate of the air passing through the heat exchange core 20 can be reduced, thereby reducing the resistance of the heat exchange core 20 and the entire machine in the fresh air duct 121; the air in the return air duct 122 flows through the heat exchange core 20, and due to the small area of the second air inlet face 202a and the second air outlet face 202b, the flow rate of the air passing through the heat exchange core 20 can be increased, thereby increasing the resistance of the heat exchange core 20 and the entire machine in the return air duct 122.

[0190] Therefore, by setting the cross section of the heat exchange core 20 as a rectangle, the asymmetric design of the fresh air duct 121 and the return air duct 122 can be achieved, the air resistance of the fresh air duct 121 and the return air duct 122 is balanced, and the air resistance of the fresh air duct 121 and the return air duct 122 is the same, thereby ensuring that the air volume in the fresh air duct 121 and the return air duct 122 is the same when the rotational speed of the fresh air fan 30 and the return air fan 40 is the same. While the air flow in the fresh air duct 121 remains unchanged, increasing the volume of the fresh air duct 121 can generally reduce the air speed in the fresh air duct 121, thereby reducing the air resistance in the fresh air duct 121 and the working noise of the entire machine.

[0191] In addition, under the same air volume, the air flow rate in the fresh air duct 121 is low, and the air flow rate in the return air duct 122 is high, which effectively improves the heat exchange efficiency of the heat exchange core 20 and improves the sensible heat and latent heat efficiency.

[0192] Please refer again to Figure 7 In some embodiments, the first air inlet face 201a and the second air outlet face 202b have a first intersection line 23, the first air outlet face 201b and the second air inlet face 202a have a second intersection line 24, and the plane where the first intersection line 23 and the second intersection line 24 are located is perpendicular to the second direction. In this way, the first air inlet face 201a and the second air inlet face 202a can be asymmetrically arranged with respect to the plane determined by the first direction and the second direction, and the first air outlet face 201b and the second air outlet face 202b can be asymmetrically arranged with respect to the plane determined by the first direction and the second direction, so that the fresh air duct 121 and the return air duct 122 are designed asymmetrically, thereby meeting the requirements.

[0193] Please refer again to Figure 6In some embodiments, a return air filter 60 can be installed in the second air inlet cavity 1221 of the return air duct 122. The return air filter 60 serves as a coarse filter structure, which can be a non-woven fabric filter element capable of filtering large particles of dust and insects from the air into the heat exchange core 20. The coarse filter structure can be fitted to the second air inlet surface 202a of the heat exchange core 20, thereby integrating the coarse filter structure with the heat exchange core 20, reducing the volume occupied by the coarse filter structure in the return air duct 122, and thus reducing the size of the heat exchange device 100.

[0194] Please refer to Figures 8-10 In some embodiments, the first air inlet cavity 1211 has a first air inlet side duct wall 1211a, which is located upstream of the fresh air filter 50 in the air flow direction, and the first air inlet side duct wall 1211a and the fresh air filter 50 are arranged opposite to each other in the second direction.

[0195] In one embodiment where the housing 11 includes a first sidewall 111 and a second sidewall 112, the first air inlet side duct wall 1211a at least partially extends along a first direction from the first sidewall 111 to the second sidewall 112, gradually approaching the fresh air filter 50. That is, the first air inlet side duct wall 1211a at least partially extends along a first direction away from the fresh air inlet 1101, gradually approaching the fresh air filter 50.

[0196] For example, the distance between a portion of the first air inlet side duct wall 1211a and the fresh air filter 50 in the second direction gradually decreases along the first direction from the first side wall 111 to the second side wall 112. As another example, the distance between the entire structure of the first air inlet side duct wall 1211a and the fresh air filter 50 in the second direction gradually decreases along the first direction from the first side wall 111 to the second side wall 112.

[0197] For example, at least a portion of the surface of the first air inlet side duct wall 1211a may be formed as an arc surface that gradually curves toward the fresh air filter 50 along a first direction from the first side wall 111 to the second side wall 112.

[0198] For example, at least a portion of the surface of the first air inlet side duct wall 1211a may be formed as an inclined surface that gradually approaches the fresh air filter 50 along a first direction from the first side wall 111 to the second side wall 112.

[0199] In this way, the cross-sectional area of the first air inlet cavity 1211 perpendicular to the first direction gradually decreases from the first side wall 111 to the second side wall 112 along the first direction. In this way, the air entering the first air inlet cavity 1211 from the fresh air inlet 1101 can flow along the surface of the first air inlet side air duct wall 1211a and flow to the entire section of the fresh air filter 50 extending along the first direction under the guidance of the first air inlet side air duct wall 1211a, thereby reducing airflow separation, improving the uniformity of the air field on the surface of the fresh air filter 50 and the heat exchange core 20, reducing airflow resistance, and further reducing the working noise of the air conditioner.

[0200] Please refer again to Figure 10 The distance between the end of the first air inlet side air duct wall 1211a close to the first side wall 111 and the fresh air filter 50 in the second direction is X, and the distance between the end of the first air inlet side air duct wall 1211a close to the second side wall 112 and the fresh air filter 50 in the second direction is Y. If X / Y is too large or too small, the uniformity of the air field on the surface of the fresh air filter 50 and the heat exchange core 20 will be affected.

[0201] In some embodiments, the distance between the first air inlet side air duct wall 1211a and the fresh air filter 50 in the second direction gradually decreases from the first side wall 111 to the second side wall 112 along the first direction, and X / Y is 4.5-7. For example, X / Y can be 4.5, 5, 5.5, 6, 6.5, 7, etc.

[0202] In the above technical solution, by limiting the ratio of the distance between the end of the first air inlet side air duct wall 1211a close to the first side wall 111 and the fresh air filter 50 in the second direction and the distance between the end of the first air inlet side air duct wall 1211a close to the second side wall 112 and the fresh air filter 50 in the second direction, the air entering the first air inlet cavity 1211 from the fresh air inlet 1101 can flow along the surface of the first air inlet side air duct wall 1211a, thereby improving the uniformity of the air field on the surface of the fresh air filter 50 and the heat exchange core 20, reducing airflow resistance, and further reducing the working noise of the air conditioner. It can also improve the heat exchange efficiency of the heat exchange core 20.

[0203] In some embodiments, the distance between the end of the first air inlet side air duct wall 1211a close to the second side wall 112 and the fresh air filter 50 in the second direction is greater than or equal to 15 mm. For example, the distance Y between the end of the first air inlet side air duct wall 1211a close to the second side wall 112 and the fresh air filter 50 in the second direction can be 15 mm, 18 mm, 20 mm, etc.

[0204] In the above technical solution, by limiting the distance between the one end of the first air inlet side air duct wall 1211a close to the second side wall 112 and the fresh air filter 50 in the second direction to satisfy the above range, the air entering the first air inlet cavity 1211 from the fresh air inlet 1101 can flow to the position close to the second side wall 112 on the fresh air filter 50 as much as possible, so that the air field uniformity of the fresh air filter 50 and the surface of the heat exchange core 20 can be improved, the air flow resistance can be reduced, and the working noise of the whole machine can be reduced.

[0205] Please refer again to Figure 9 , and further refer to Figure 10 and Figure 11 In some embodiments, the first air inlet cavity 1211 has a second air inlet side air duct wall 1211b, which is located between the fresh air filter 50 and the first air inlet side air duct wall 1211a in the second direction.

[0206] Wherein, at least a part of the second air inlet side air duct wall 1211b gradually approaches the middle position of the first air inlet cavity 1211 in the third direction from the first side wall 111 to the second side wall 112 in the first direction. That is, at least a part of the second air inlet side air duct wall 1211b gradually approaches the middle of the first air inlet cavity 1211 in the third direction in the direction away from the fresh air inlet 1101 in the first direction. Specifically Figure 11 , at least a part of the second air inlet side air duct wall 1211b gradually extends downward from left to right.

[0207] For example, at least a part of the surface of the second air inlet side air duct wall 1211b can form an arc surface that gradually bends towards the middle of the first air inlet cavity 1211 in the third direction from the first side wall 111 to the second side wall 112 in the first direction.

[0208] For example, at least a part of the surface of the second air inlet side air duct wall 1211b can form an inclined surface that gradually approaches the middle of the first air inlet cavity 1211 in the third direction from the first side wall 111 to the second side wall 112 in the first direction.

[0209] In this way, the cross-sectional area of the first air inlet cavity 1211 perpendicular to the first direction can gradually decrease from the first side wall 111 to the second side wall 112, so that the air entering the first air inlet cavity 1211 from the fresh air inlet 1101 can flow along the surface of the second air inlet side air duct wall 1211b and flow to the entire section of the fresh air filter 50 extending in the first direction under the guidance of the second air inlet side air duct wall 1211b, reducing airflow separation, so that the air field uniformity of the fresh air filter 50 and the surface of the heat exchange core 20 can be improved, the air flow resistance can be reduced, and the working noise of the whole machine can be reduced.

[0210] In some embodiments, the second air inlet side duct wall 1211b comprises a first portion 1211c and a second portion 1211d, the first portion 1211c is located between the fresh air inlet 1101 and the second portion 1211d in the first direction, the first portion 1211c gradually approaches the middle position of the first air inlet cavity 1211 in the third direction from the first side wall 111 to the second side wall 112 in the first direction, and the second portion 1211d extends in the first direction.

[0211] That is, the portion of the second air inlet side duct wall 1211b close to the fresh air inlet 1101 can be provided as an arc surface or an inclined surface, which can maximize the air inlet of the fresh air inlet 1101 on the one hand, and can make the air entering the first air inlet cavity 1211 from the fresh air inlet 1101 flow along the second air inlet side duct wall 1211b, so that the air is more evenly distributed and flows to the fresh air filter 50.

[0212] Please refer again to Figure 11 In some embodiments, the inclination angle of the first portion 1211c relative to the plane determined by the first direction and the second direction is α. Specifically, if the first portion 1211c is an arc surface, the inclination angle here refers to the inclination angle of the tangent plane of the first portion 1211c relative to the plane determined by the first direction and the second direction is α; if the first portion 1211c is an inclined surface, the inclination angle here refers to the inclination angle of the first portion 1211c relative to the plane determined by the first direction and the second direction is α.

[0213] Wherein, the inclination angle α is less than 0° and less than 30°, or equal to 30°. For example, α can be 5°, 10°, 15°, 20°, 25°, 30°, etc.

[0214] If the inclination angle of the first portion 1211c relative to the plane determined by the first direction and the second direction is too large, it will affect the structure size of the second air inlet cavity 1221, thereby affecting the air return requirement of the air return port 1103, and also increase the molding difficulty of the duct component 12.

[0215] In the above technical solution, by limiting the inclination angle of the first portion 1211c to meet the above range, the air inlet of the portion of the first air inlet cavity 1211 of the fresh air duct 121 close to the first side wall 111 can be maximized.

[0216] Please refer again to Figure 11 In some embodiments, the length of the first portion 1211c in the first direction is L1, the length of the second air inlet side duct wall 1211b in the first direction is L, and L1 / L is 0.4-0.6. For example, L1 / L can be 0.4, 0.5, 0.6.

[0217] If the length L1 of the first portion 1211c in the first direction is too small, there is a problem of uneven wind field flowing through the fresh air filter 50, thereby affecting the air intake requirement of the fresh air inlet 1101, and if the length L1 of the first portion 1211c in the first direction is too large, it will affect the structural size of the second air inlet cavity 1221, thereby affecting the air return requirement of the air return port 1103, and also increase the molding difficulty of the air duct component 12.

[0218] In the above technical solution, by limiting L1 / L to satisfy the above range, the uniformity of the wind field flowing through the fresh air filter 50 can be improved, the air resistance in the fresh air duct 121 can be reduced, the structural size of the first air inlet cavity 1211 and the second air inlet cavity 1221 can satisfy the requirement of balancing the air resistance in the fresh air duct 121 and the return air duct 122, thereby satisfying the air intake requirement of the fresh air inlet 1101 and the air return requirement of the air return port 1103, and also reducing the molding difficulty of the air duct component 12.

[0219] In some embodiments, the first air inlet side duct wall 1211a and the second air inlet side duct wall 1211b are connected, and the first air inlet cavity 1211 and the second air inlet cavity 1221 are at least partially separated by the first air inlet side duct wall 1211a and the second air inlet side duct wall 1211b.

[0220] That is, the first air inlet side duct wall 1211a and the second air inlet side duct wall 1211b can serve as a separation structure (such as the air inlet separator 125 described above) separating the first air inlet cavity 1211 and the second air inlet cavity 1221, and a part of the first air inlet cavity 1211 and the second air inlet cavity 1221 can be arranged in the second direction and separated by the first air inlet side duct wall 1211a, and another part of the first air inlet cavity 1211 and the second air inlet cavity 1221 can be arranged in the third direction and separated by the second air inlet side duct wall 1211b.

[0221] In this way, the first air inlet side duct wall 1211a and the second air inlet side duct wall 1211b can be matched with the heat exchange core 20 to effectively separate the internal space of the shell 10, and the first air inlet cavity 1211 and the second air inlet cavity 1221 arranged asymmetrically can improve the utilization rate of the internal space of the shell 10.

[0222] Please refer to Figure 10 In some embodiments, the first air inlet cavity 1211 further has a third air inlet side duct wall 1211e extending in the first direction, and the third air inlet side duct wall 1211e is connected to the side of the second air inlet side duct wall 1211b away from the first air inlet side duct wall 1211a. That is, in the second direction, the second air inlet side duct wall 1211b is located between the first air inlet side duct wall 1211a and the third air inlet side duct wall 1211e.

[0223] The third air inlet side air duct wall 1211e is provided with a first positioning rib 1211f and a second positioning rib 1211g, the first positioning rib 1211f and the second positioning rib 1211g are arranged at intervals in the second direction, and the fresh air filter 50 is located between the first positioning rib 1211f and the second positioning rib 1211g. The first positioning rib 1211f and the second positioning rib 1211g can limit the fresh air filter 50, reduce the displacement of the fresh air filter 50, and improve the installation reliability and stability of the fresh air filter 50.

[0224] Please refer to Figure 4 and Figure 5 In some embodiments, the first air outlet cavity 1212 includes a fresh air fan containing cavity 1212a and a first heat exchange cavity 1212b, the fresh air fan containing cavity 1212a and the first heat exchange cavity 1212b are arranged in the second direction, the second air outlet cavity 1222 includes a return air fan containing cavity 1222a and a second heat exchange cavity 1222b, the return air fan containing cavity 1222a and the second heat exchange cavity 1222b are arranged in the second direction.

[0225] The fresh air fan containing cavity 1212a and the return air fan containing cavity 1222a are arranged in the first direction, and in the second direction, the first heat exchange cavity 1212b is located between the first air outlet surface 201b and the fresh air fan containing cavity 1212a, and the second heat exchange cavity 1222b is located between the second air outlet surface 202b and the return air fan containing cavity 1222a.

[0226] Since the first air outlet surface 201b and the second air outlet surface 202b are arranged in the third direction, the first air outlet cavity 1212 and the first heat exchange cavity 1212b and the second heat exchange cavity 1222b of the second air outlet cavity 1222 are also arranged in the third direction, while the fresh air fan containing cavity 1212a and the return air fan containing cavity 1222a are arranged in the first direction, so that the structures of the first air outlet cavity 1212 and the second air outlet cavity 1222 are different, and the asymmetric design of the first air outlet cavity 1212 and the second air outlet cavity 1222 is realized.

[0227] For example, at least a part of the second air inlet partition plate 1252 forms the first air inlet side air duct wall 1211a, at least a part of the second air inlet partition plate 1252 forms the second air inlet side air duct wall 1211b and the third air inlet side air duct wall 1211e. At least a part of the first air outlet partition plate 1241 forms the first air outlet side air duct wall 1212c, and at least a part of the second air outlet partition plate 1242 forms the second air outlet side air duct wall 1222c.

[0228] Please refer to 15- Figure 18In some embodiments, the first air outlet surface 201b and the second air outlet surface 202b have a first corner 21 at the junction thereof, and the air outlet partition 124 has a first limiting groove 1240 at a position close to the first corner 21, which cooperates with the first corner 21.

[0229] Since the heat exchange core 20 is located between the air outlet partition 124 and the air inlet partition 125 in the second direction, the air outlet partition 124 cooperates with the heat exchange core 20 to limit the freedom of the heat exchange core 20 in the second direction.

[0230] For example, the first limiting groove 1240 has first groove side walls adjacent to and arranged at an angle, one of the two first groove side walls abuts the first air outlet surface 201b, and the other of the two first groove side walls abuts the second air outlet surface 202b, so that the two first groove side walls not only limit the freedom of the heat exchange core 20 in the second direction, but also limit the freedom of the heat exchange core 20 in the third direction.

[0231] Therefore, by providing the first limiting groove 1240 on the air outlet partition 124 and cooperating the first limiting groove 1240 with the first corner 21 of the heat exchange core 20, the heat exchange core 20 can be limited in multiple directions, and the installation reliability and stability of the heat exchange core 20 are ensured, thereby improving the use reliability of the heat exchange device 100.

[0232] Reference is made to Figures 15-18 In some embodiments, the first air inlet surface 201a and the second air inlet surface 202a have a second corner 22 at the junction thereof, and the air inlet partition 125 has a second limiting groove 1250 at a position close to the second corner 22, which cooperates with the second corner 22.

[0233] Since the heat exchange core 20 is located between the air outlet partition 124 and the air inlet partition 125 in the second direction, the air inlet partition 125 cooperates with the heat exchange core 20 to limit the freedom of the heat exchange core 20 in the second direction.

[0234] For example, the second limiting groove 1250 has second groove side walls adjacent to and arranged at an angle, one of the two second groove side walls abuts the first air inlet surface 201a, and the other of the two second groove side walls abuts the second air inlet surface 202a, so that the two second groove side walls not only limit the freedom of the heat exchange core 20 in the second direction, but also limit the freedom of the heat exchange core 20 in the third direction.

[0235] Therefore, by arranging the second limiting groove 1250 on the air inlet partition 125, the second limiting groove 1250 is matched with the second corner 22 of the heat exchange core 20, so that the heat exchange core 20 can be limited in multiple directions, the installation reliability and stability of the heat exchange core 20 are ensured, and the use reliability of the heat exchange device 100 is improved.

[0236] In some embodiments, the heat exchange device 100 further comprises a detection member, which can be used to detect information of indoor air. For example, the detection member can detect at least one of temperature, humidity, CO2, PM2.5 and TVOC of indoor air, so that the working time, start-up and shutdown time and the like of the heat exchange device 100 can be controlled according to the detection result of the detection member.

[0237] In the description of the present specification, the description referring to the terms "embodiment", "example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present specification, 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 can be combined in any one or more embodiments or examples in a suitable manner.

[0238] Although the embodiments of the present disclosure have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present disclosure, and the scope of the present disclosure is defined by the claims and their equivalents.

Claims

1. A heat exchange device, comprising: a housing (11) provided with a fresh air inlet (1101), a fresh air outlet (1102), a return air inlet (1103) and a return air outlet (1104); and a duct component (12) provided in the housing (11) and adapted to define a fresh air duct (121) and a return air duct (122), the fresh air duct (121) comprising a first air inlet cavity (1211) and a first air outlet cavity (1212) in communication, the first air inlet cavity (1211) being in communication with the fresh air inlet (1101), the first air outlet cavity (1212) being in communication with the fresh air outlet (1102), the return air duct (122) comprising a second air inlet cavity (1221) and a second air outlet cavity (1222) in communication, the second air inlet cavity (1221) being in communication with the return air inlet (1103), the second air outlet cavity (1222) being in communication with the return air outlet (1104); characterized in that the duct component (12) further defines a receiving space for receiving a heat exchange core (20), the receiving space being located between the first air inlet cavity (1211) and the first air outlet cavity (1212), and between the second air inlet cavity (1221) and the second air outlet cavity (1222), so that air flowing through the fresh air duct (121) and the return air duct (122) exchanges heat in the heat exchange core (20); a length direction of the receiving space extends along a first direction, the first air inlet cavity (1211) and the second air inlet cavity (1221) are located at one side of the length direction of the receiving space, and the first air outlet cavity (1212) and the second air outlet cavity (1222) are located at the other side of the length direction of the receiving space; wherein the duct component (12) is an integrally formed piece. The duct component (12) is an integrally foamed piece. The duct component (12) comprises: a frame (123) comprising a first side plate (1231) and a second side plate (1232) oppositely arranged in the first direction, the fresh air inlet (1101) and the return air outlet (1104) being arranged in a second direction corresponding to the first side plate (1231), and the fresh air outlet (1102) and the return air inlet (1103) being arranged in the second direction corresponding to the second side plate (1232), the first direction and the second direction being perpendicular to each other; an air outlet partition (124) provided in the frame (123) and defining at least part of the first air outlet cavity (1212) and the second air outlet cavity (1222) together with the frame (123); and an air inlet partition (125) provided in the frame (123) and defining at least part of the first air inlet cavity (1211) and the second air inlet cavity (1221) together with the frame (123). ​ ​ ​ 2. The heat exchange device of claim 1, wherein ​ 3. The heat exchange device of claim 1, wherein ​ ​ ​ ​ The air outlet partition (124) and the air inlet partition (125) are arranged in the second direction, and the containing space is located between the air outlet partition (124) and the air inlet partition (125), and the frame (123), the air outlet partition (124) and the air inlet partition (125) are integrally formed.

4. The heat exchange device of claim 3, wherein The first air outlet cavity (1212) comprises a fresh air fan containing cavity, and the second air outlet cavity (1222) comprises a return air fan containing cavity, and the fresh air fan containing cavity and the return air fan containing cavity are arranged in the first direction.

5. The heat exchange device of claim 4, wherein The air outlet partition (124) comprises: A first air outlet baffle (1241) connected to the first side plate (1231) at one end in the first direction; A second air outlet baffle (1242) arranged in the first direction and staggered in a third direction with the first air outlet baffle (1241), and connected to the second side plate (1232) at one end in the first direction, and the third direction is perpendicular to the first direction and the second direction; A third air outlet baffle (1243) connected to the frame (123) at one end in the second direction and connected between the first air outlet baffle (1241) and the second air outlet baffle (1242) at the other end in the second direction; The third air outlet baffle (1243), the first air outlet baffle (1241) and the frame (123) define the return air fan containing cavity, and the third air outlet baffle (1243), the second air outlet baffle (1242) and the frame (123) define the fresh air fan containing cavity.

6. The heat exchange device of claim 5, wherein The first air outlet baffle (1241) is connected to the third air outlet baffle (1243) in a circular arc transition on a side facing the containing space; And / or, the first air outlet baffle (1241) has a first air outlet flow guide surface (1212d) on a side facing the containing space, and the first air outlet flow guide surface (1212d) gradually moves away from the containing space from the first side plate (1231) to the second side plate (1232) in the first direction; And / or, one end of the first air outlet baffle (1241) close to the second air outlet baffle (1242) in the third direction is curved towards the containing space for guiding air in the containing space into the return air fan containing cavity; And / or, the second air outlet baffle (1242) is connected to the third air outlet baffle (1243) in a circular arc transition on a side facing the containing space; And / or, the second air outlet baffle (1242) has a second air outlet flow guide surface (1222d) on a side facing the containing space, and the second air outlet flow guide surface (1222d) gradually moves away from the containing space from the second side plate (1232) to the first side plate (1231) in the first direction. And / or, one end of the second air outlet partition plate (1242) close to the first air outlet partition plate (1241) along the third direction is bent towards the containing space for guiding air in the containing space into the fresh air fan accommodating cavity.

7. The heat exchange device of claim 3, wherein The first air inlet cavity (1211) and the second air inlet cavity (1221) are arranged at least partially in a third direction, the third direction being perpendicular to the first direction and the second direction; the frame (123) further comprises an end plate (1234), two ends of the end plate (1234) along the first direction are connected with one end of the first side plate (1231) and the second side plate (1232) extending along the third direction respectively; The air inlet partition (125) comprises a first air inlet partition plate (1251), two ends of the first air inlet partition plate (1251) along the first direction are connected with the first side plate (1231) and the second side plate (1232) respectively, the first air inlet cavity (1211) is located at least partially on a side of the first air inlet partition plate (1251) away from the end plate (1234), and the second air inlet cavity (1221) is located at least partially between the first air inlet partition plate (1251) and the end plate (1234).

8. The heat exchange device of claim 7, wherein The frame (123) further comprises a third side plate (1233), two ends of the third side plate (1233) along the first direction are connected with the first side plate (1231) and the second side plate (1232) respectively; The air inlet partition (125) comprises a second air inlet partition plate (1252), the second air inlet partition plate (1252) is arranged opposite to the third side plate (1233) in the second direction and connected with a side of the first air inlet partition plate (1251) close to the third side plate (1233), and the second air inlet cavity (1221) is located at least partially between the second air inlet partition plate (1252) and the third side plate (1233).

9. The heat exchange device according to any one of claims 1 to 8, characterized in that, The air duct component (12) has a first air outlet communicating with the fresh air outlet (1102) and a second air outlet communicating with the exhaust air outlet (1104), and the heat exchange device further comprises: A heat exchange core (20) is arranged in the containing space and cooperates with the air duct component (12) to form the fresh air duct (121) and the return air duct (122), the fresh air duct (121) is a fresh air duct (121), and the return air duct (122) is a return air duct (122); A fresh air fan (30) is rotatably arranged in the first air outlet cavity (1212) and located between the heat exchange core (20) and the first air outlet in the air flow direction; A return air fan (40) is rotatably arranged in the second air outlet cavity (1222) and located between the heat exchange core (20) and the second air outlet in the air flow direction.

10. The heat exchange device of claim 9, wherein, The length direction of the heat exchange core (20) extends along the first direction, the peripheral wall of the heat exchange core (20) has a first air inlet face (201a), a first air outlet face (201b), a second air inlet face (202a) and a second air outlet face (202b), the first air inlet face (201a) and the second air inlet face (202a) are arranged at an angle, the first air inlet face (201a) is arranged at an angle with the second air outlet face (202b), the first air outlet face (201b) is arranged at an angle with the second air outlet face (202b), and the first air outlet face (201b) is arranged at an angle with the second air inlet face (202a); the first air inlet cavity (1211) is located between the fresh air inlet and the first air inlet face (201a), the first air outlet cavity (1212) is located between the fresh air outlet and the first air outlet face (201b), the second air inlet cavity (1221) is located between the return air outlet and the second air inlet face (202a), and the second air outlet cavity (1222) is located between the exhaust air outlet and the second air outlet face (202b); And / or, the heat exchange device further comprises a fresh air filter (50), and the fresh air filter (50) is arranged in the first air inlet cavity (1211).

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