Heat exchange device

Abstract

The present invention provides a heat exchange device, comprising a frame, an air supply inlet, an exhaust inlet, an air inlet duct, an exhaust duct, a heat exchange unit, and an air flow separator. The angle formed by the air inlet surface of the heat exchange unit located in the exhaust duct and the plane on which the top wall of the frame is located, and the angle formed by the air inlet surface of the heat exchange unit located in the air inlet duct and the plane on which the bottom wall is located, are both greater than 0 degrees and less than 90 degrees. The air flow separator comprises a first air flow separator, a second air flow separator, and a third air flow separator. The length of the first air flow separator from the direction of the heat exchange unit toward the third side wall gradually shortens from the exhaust inlet side to the supply inlet side. A gap for air flow in the air inlet duct is provided between the first air flow separator and the third air flow separator and the third side wall. Therefore, the heat exchange efficiency can be improved while achieving structural miniaturization.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchange, and in particular to a heat exchange device. Background Art

[0002] Existing heat exchange devices with heat exchange functions enable fresh air drawn in from the outside to be exchanged with old air exhausted from the room through heat exchange elements or other heat exchange components, thereby regulating the temperature of the fresh air and providing a suitable indoor temperature. These heat exchange devices feature low energy consumption and are therefore increasingly popular with consumers.

[0003] Currently, there is a heat exchange device on the market as disclosed in patent document CN206572700U. Figure 1 As shown, in order to achieve the miniaturization of the heat exchange device, the fresh air inlet channel 11 and the exhaust air inlet channel 12 are arranged parallel to each other on one side of the housing 1, the fresh air fan 13 and the exhaust air fan 14 are arranged on the other side of the housing 1, and a heat exchanger 15 is arranged between the fresh air inlet channel 11 and the exhaust air inlet channel 12 and the fresh air fan 13 and the exhaust air fan 14. The inlets 111 and 121 of the fresh air inlet channel 11 and the exhaust air inlet channel 12 are respectively arranged at both ends of one side of the housing 1, and an air flow dividing plate 122 is provided at one end of the inlet 111 of the fresh air inlet channel facing the inlet 121 of the exhaust air inlet channel 12. The side and top surfaces of the heat exchanger 15 are distributed with mutually perpendicular first and second heat exchange channels along the direction from the inlet 111 of the fresh air inlet channel toward the inlet 121 of the exhaust air inlet channel 12. In order to cooperate with the miniaturization and the mutually perpendicular first heat exchange channel and the second heat exchange channel in the heat exchanger 15, the longitudinal cross-sectional area of ​​the exhaust air inlet channel 12 is much smaller than the longitudinal cross-sectional area of ​​the fresh air inlet channel 11. Compared with the fresh air inlet channel 11, the exhaust air inlet channel 12 is not smooth, the pressure loss is large, and the wind speed is much different from the wind speed of the fresh air inlet channel 11, which will lead to a decrease in heat exchange efficiency. Summary of the Invention

[0004] (1) Technical issues to be resolved

[0005] In order to solve the above-mentioned technical problem that the longitudinal cross-sectional area of ​​the exhaust air inlet channel is much smaller than the longitudinal cross-sectional area of ​​the fresh air inlet channel, resulting in the exhaust air inlet channel being not smooth, the pressure loss being large, and the wind speed being greatly different from that of the fresh air inlet channel, the present invention provides a heat exchange device to improve the heat exchange efficiency while achieving structural miniaturization.

[0006] (2) Technical solution

[0007] The present invention provides a heat exchange device, comprising: a frame, an air supply inlet, an exhaust air inlet, an air inlet path, an exhaust air path, a heat exchange unit, and an air flow separation plate. The frame has a top wall, a bottom wall, a first side wall connecting the top wall and the bottom wall, a second side wall facing the first side wall, and a third side wall connecting the first side wall and the second side wall; the air supply inlet is an opening provided on the first side wall for air from the second space to enter the frame; the exhaust air inlet is an opening provided on the second side wall and located on a side close to the third side wall as the air supply inlet, for air from the first space to enter the frame; the air inlet path guides the air in the frame to the first space; the exhaust air path is separated from the air inlet path and guides the air in the frame to the second space; the heat exchange unit is provided in the air inlet path and the exhaust air path, so that the air passing through the air inlet path and the air passing through the exhaust air path exchange energy with each other; the air flow separation plate separates the air inlet path and the exhaust air path;

[0008] wherein, the angle formed by the air inlet surface of the heat exchange unit located in the exhaust air path and the plane of the top wall of the frame, and the angle formed by the air inlet surface of the heat exchange unit located in the air inlet air path and the plane of the bottom wall are both greater than 0 degrees and less than 90 degrees; the air flow separation plate comprises: a first air flow separation plate, a second air flow separation plate and a third air flow separation plate, the first air flow separation plate extends from the air inlet side edge between the air inlet surface of the heat exchange unit located in the air inlet air path and the air inlet surface located in the exhaust air path to the third side wall; the second air flow separation plate extends downward from the end of the first air flow separation plate close to the exhaust air inlet side to the bottom wall, and is arranged opposite to the exhaust air inlet; the third air flow separation plate is fixed on the top wall and connects the top wall and the third side wall; the length of the first air flow separation plate from the direction of the heat exchange unit to the third side wall gradually shortens from the exhaust air inlet side to the supply air inlet side; a gap for air flow in the air inlet path is provided between the first air flow separation plate and the third air flow separation plate and the third side wall.

[0009] According to an embodiment of the present invention, there is a certain distance between the second air flow dividing plate and the exhaust air inlet.

[0010] According to an embodiment of the present invention, the third airflow dividing plate is inclined toward the first airflow dividing plate from the inner periphery of the frame to the outer periphery of the frame, so that the air inlet passage has a gap formed between the third airflow dividing plate and the top wall.

[0011] According to an embodiment of the present invention, the edge of the first air flow separator close to the third side wall side is the third side wall side edge of the first air flow separator; the edge of the third air flow separator close to the third side wall side is the third side wall side edge of the third air flow separator; wherein, the heat exchange device also includes: a fourth air flow separator, the fourth air flow separator is arranged between the third side wall side edge of the third air flow separator and the third side wall side edge of the first air flow separator; the third air flow separator and the first air flow separator are connected through the fourth air flow separator.

[0012] According to an embodiment of the present invention, the heat exchange device also includes: a filter unit and a wind shield, the filter unit is used to filter the air entering the frame from the air supply inlet, and is arranged between the first air flow separation plate and the bottom wall; the wind shield is arranged on the downstream side of the air supply inlet, extending downward from the air supply inlet side edge of the third air flow separation plate close to the air supply inlet side to the bottom wall, with a certain distance from the first side wall, and blocking the end of the filter unit facing the air supply inlet.

[0013] According to an embodiment of the present invention, the wind shield includes: a shielding portion and a connecting portion, the shielding portion is a plate that shields the end of the filter unit facing the air inlet, the edge of the shielding portion away from the third side wall is a longitudinal edge, and the edge of the shielding portion that is in contact with the bottom wall is a transverse edge; the connecting portion connects the longitudinal edge and the transverse edge, and extends from the shielding portion side to the first side wall.

[0014] According to an embodiment of the present invention, a gap is provided between the longitudinal edge and the bottom wall, and the air inlet path is located on the downstream side of the heat exchange unit; the edge between the longitudinal edge and the transverse edge is a downward inclined edge, and the downward inclined edge is inclined from the end of the longitudinal edge close to the bottom wall side to the transverse edge on the third side wall side; the connecting part includes: a first connecting part and a second connecting part, the first connecting part extends from the longitudinal edge to the first side wall; the second connecting part extends from the lower inclined edge to the first side wall.

[0015] (3) Beneficial effects

[0016] The present invention provides a heat exchange device, comprising: a frame, an air supply inlet, an exhaust inlet, an air inlet path, an air exhaust path, a heat exchange unit and an air flow dividing plate. wherein, the angle formed by the air inlet surface of the heat exchange unit located in the exhaust air path and the plane of the top wall of the frame, and the angle formed by the air inlet surface of the heat exchange unit located in the air inlet air path and the plane of the bottom wall are both greater than 0 degrees and less than 90 degrees; the air flow separation plate comprises: a first air flow separation plate, a second air flow separation plate and a third air flow separation plate, the first air flow separation plate extends from the air inlet side edge between the air inlet surface of the heat exchange unit located in the air inlet air path and the air inlet surface located in the exhaust air path to the third side wall; the second air flow separation plate extends downward from the end of the first air flow separation plate close to the exhaust air inlet side to the bottom wall, and is arranged opposite to the exhaust air inlet; the third air flow separation plate is fixed on the top wall and connects the top wall and the third side wall; the length of the first air flow separation plate from the direction of the heat exchange unit to the third side wall gradually shortens from the exhaust air inlet side to the supply air inlet side; a gap for air flow in the air inlet path is provided between the first air flow separation plate and the third air flow separation plate and the third side wall. Therefore, the heat exchange device of the present invention can make the air volume between the exhaust air path and the air inlet air path more balanced, thereby improving the heat exchange efficiency while achieving structural miniaturization. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural perspective diagram of a heat exchange device in the prior art;

[0018] Figure 2 Schematically shows a three-dimensional internal view of a heat exchange device according to an embodiment of the present invention;

[0019] Figure 3 Schematically shows another three-dimensional internal view of the heat exchange device according to an embodiment of the present invention;

[0020] Figure 4 Schematically shows another three-dimensional internal view of the heat exchange device according to an embodiment of the present invention;

[0021] Figure 5 The figure schematically shows the three-dimensional structure of the wind shield of the heat exchange device according to the embodiment of the present invention.

[0022] <Reference Signs>

[0023] 100 frame, 101 first side wall, 102 second side wall, 104 fourth side wall, 106 bottom wall;

[0024] 21 air supply inlet, 22 exhaust air inlet, 23 air supply outlet, 24 exhaust outlet;

[0025] 31 first airflow separator, 301 air inlet side edge, 311 front side edge of the first airflow separator, 312 rear side edge of the first airflow separator, 313 third side wall edge of the first airflow separator;

[0026] 32 second air flow separator, 321 upper side of the second air flow separator, 322 lower side of the second air flow separator, 323 upper overhanging side of the second air flow separator, 324 return air outlet side of the second air flow separator;

[0027] 33 third air flow separator, 331 upper side of the third air flow separator, 332 side edge of the air supply inlet, 333 side edge of the third side wall of the third air flow separator;

[0028] 34 fourth air flow separation plate;

[0029] 35 windshield, 350 shielding portion, 351 longitudinal edge, 352 lower inclined edge, 356 upper inclined edge, 353 transverse edge, 354 upper side of the windshield;

[0030] 40 heat exchange unit, 41 heat exchange unit is located at the end of the supply air inlet side, 42 heat exchange unit is located at the end of the exhaust air inlet side, 44 heat exchange unit is located at the air inlet surface of the exhaust air path, 442 heat exchange unit is located at the rear side of the air inlet surface of the exhaust air path, 450 connecting portion, 451 first connecting portion, 452 second connecting portion;

[0031] 51 air supply fan, 52 exhaust fan, 551 upper side of the first connecting portion, 552 lower side of the first connecting portion, 553 front side of the first connecting portion;

[0032] 60 filter unit, 61 the end of the filter unit facing the air supply inlet, 62 the end of the filter unit facing the exhaust air inlet, 651 the front side of the second connecting part, 652 the rear side of the second connecting part. DETAILED DESCRIPTION

[0033] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0034] It should be noted that any implementations not shown or described in the drawings or the main text of the specification are known to those skilled in the art and are not described in detail. Furthermore, the definitions of the various elements and methods described above are not limited to the specific structures, shapes, or methods described in the embodiments; those skilled in the art may easily modify or replace them.

[0035] It should also be noted that directional terms such as "upper," "lower," "front," "back," "left," and "right" mentioned in the embodiments are merely references to the directions in the accompanying drawings and are not intended to limit the scope of protection of the present invention. Throughout the drawings, identical elements are represented by identical or similar reference numerals. Conventional structures or configurations will be omitted where they may cause confusion in understanding the present invention.

[0036] Furthermore, the shapes and sizes of the components in the figures do not reflect the actual sizes and proportions, but are merely illustrative of the contents of the embodiments of the present invention. In addition, in the claims, any reference signs between brackets should not be construed as limiting the claims.

[0037] Furthermore, the word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements.

[0038] The use of ordinal numbers such as "first," "second," "third," etc. in the specification and claims to modify corresponding elements does not in itself mean that the elements have any ordinal number, nor does it represent the order of one element relative to another or the order in the manufacturing method. The use of these ordinal numbers is only used to clearly distinguish one element with a certain name from another element with the same name.

[0039] Those skilled in the art will appreciate that the modules in the devices of the embodiments may be adaptively changed and placed in one or more devices different from the embodiments. The modules or units or components in the embodiments may be combined into one module or unit or component, and further they may be divided into a plurality of submodules or subunits or subcomponents. All features disclosed in this specification (including the accompanying claims, abstract and drawings) and all processes or units of any method or device so disclosed may be combined in any combination, except that at least some of such features and / or processes or units are mutually exclusive. Unless expressly stated otherwise, each feature disclosed in this specification (including the accompanying claims, abstract and drawings) may be replaced by an alternative feature providing the same, equivalent or similar purpose. Furthermore, in a unit claim enumerating a number of means, several of these means may be embodied by the same item of hardware.

[0040] Similarly, it should be understood that in order to streamline the present invention and aid understanding of one or more of the various disclosed aspects, in the above description of exemplary embodiments of the present invention, various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, this disclosed approach should not be interpreted as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as reflected in the claims below, the disclosed aspects lie in fewer than all the features of the individual embodiments disclosed above. Accordingly, the claims that follow the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of the present invention.

[0041] In order to solve the above-mentioned technical problem that the longitudinal cross-sectional area of ​​the exhaust air inlet channel is much smaller than the longitudinal cross-sectional area of ​​the fresh air inlet channel, resulting in the exhaust air inlet channel being not smooth, the pressure loss being large, and the wind speed being greatly different from that of the fresh air inlet channel, the present invention provides a heat exchange device to improve the heat exchange efficiency while achieving structural miniaturization.

[0042] like Figure 2-Figure 5 As shown, the present invention provides a heat exchange device, including: a frame 100, an air supply inlet 21, an exhaust air inlet 22, an air inlet path, an air exhaust path, a heat exchange unit 40 and an air flow separation plate.

[0043] According to an embodiment of the present invention, Figure 2-Figure 5As shown, the heat exchange device of the present invention includes a frame 100 and multiple openings provided on the frame 100. These openings include an installation port for installing electrical components and a maintenance port for removing and installing components during maintenance. The openings also include multiple air vents. The heat exchange device can be used in equipment to provide ventilation, such as air conditioners and air purifiers.

[0044] In an embodiment of the present invention, Figure 2-Figure 5 As shown, the frame body 100 includes a top wall (the top wall is not shown in the drawings to clearly illustrate the internal structure of the frame body 100), a bottom wall 106 disposed opposite to the top wall, a first side wall 101 connecting the top wall and the bottom wall, a second side wall 102 facing the first side wall, and a third side wall connecting the first side wall and the second side wall (the third side wall is not shown in the drawings to clearly illustrate the internal structure of the frame body 100);

[0045] The top wall, bottom wall 106, first side wall 101, second side wall 102, third side wall and fourth side wall 104 are used to surround and form the internal accommodating space of the heat exchange device; the multiple air vents include at least: the following air supply inlet 21 and exhaust inlet 22, which are used to allow air in the second space to enter the frame 100 and allow air in the first space to enter the frame 100, respectively.

[0046] The supply air inlet 21 is an opening provided on the first side wall 101 for allowing air from the second space to enter the frame body 100. The exhaust air inlet 22 is an opening provided on the second side wall 102 and located on a side close to the third side wall as the supply air inlet 21 for allowing air from the first space to enter the frame body 100. The air inlet path guides the air in the frame body 100 to the first space; the exhaust air path is separated from the air inlet path and guides the air in the frame body 100 to the second space.

[0047] Correspondingly, the multiple air vents also include an air supply outlet 23 and an exhaust outlet 24, which are respectively used to allow the air entering the frame 100 through the air supply inlet 21 to enter the device and to allow the air entering the frame 100 through the exhaust inlet 22 to be discharged to the outside, that is, the second space.

[0048] The heat exchange unit 40 is provided in the air inlet passage and the exhaust passage, so that the air passing through the air inlet passage and the air passing through the exhaust passage exchange energy with each other; the air flow separation plate separates the air inlet passage and the exhaust passage.

[0049] Among them, the air supply inlet 21 and the air supply outlet 23 are connected to form the air inlet end and the air outlet end of the air inlet path of the embodiment of the present invention. Similarly, the exhaust air inlet 22 and the exhaust air outlet 24 are connected to form the air inlet end and the air outlet end of the exhaust path of the embodiment of the present invention.

[0050] According to an embodiment of the present invention, Figure 2-Figure 5 As shown, the angle formed by the air inlet surface 44 of the heat exchange unit 40 located in the exhaust air path and the plane where the top wall of the frame 100 is located, and the angle formed by the air inlet surface (not shown) of the heat exchange unit 40 located in the air inlet air path and the plane where the bottom wall 106 is located are both greater than 0 degrees and less than 90 degrees;

[0051] The heat exchange unit 40, whether its inlet surface located in the inlet air path or its inlet surface 44 located in the exhaust air path, forms an acute angle with the top and bottom walls 106 to which it is connected. Specifically, if the heat exchange unit 40 has a square or rectangular longitudinal cross-section, the heat exchange unit 40 is tilted so that its inlet surface 44 located in the exhaust air path and its inlet surface located in the inlet air path are not parallel to the top and bottom walls 106 of the frame 100. If the heat exchange unit 40 has a hexagonal longitudinal cross-section, the heat exchange unit 40 can be placed upright. In other words, the present invention does not impose any restrictions on the specific shape of the heat exchange unit 40, as long as its inlet surface 44 located in the exhaust air path and its inlet surface located in the inlet air path are not parallel to the top and bottom walls 106 of the frame 100.

[0052] It should be noted that if Figure 3 、 Figure 4 As shown, the air outlet end of the air supply fan 51 corresponds to the air supply outlet 23 set on the first side wall 101 of the frame 100, and the air outlet end of the exhaust fan 52 corresponds to the exhaust outlet 24 set on the second side wall 102 of the frame 100, and is arranged opposite to the air outlet end of the air supply fan 51.

[0053] Therefore, if Figure 2-Figure 4 As shown, the operating principle of the heat exchange device in the embodiment of the present invention is as follows: under the drive of the supply fan 51, the air supply inlet 21 of the air inlet path guides the fresh air of the second space into the frame 100, the fresh air is filtered by the filter unit 60, and the filtered fresh air enters the heat exchange unit 40 from the air inlet surface in the air inlet path. Similarly, under the drive of the exhaust fan 52, the exhaust air inlet 22 of the exhaust path guides the return air from the first space into the frame 100, and then enters the heat exchange unit 40 from the air inlet surface 44 in the exhaust path; the fresh air and return air entering the heat exchange unit 40 complete the heat exchange operation inside the heat exchange unit 40, and then the fresh air that completes the heat exchange enters the supply air space of the supply fan 51, and the supply fan 51 sends the fresh air into the first space through the air supply outlet 23; the return air that completes the heat exchange enters the exhaust air space of the exhaust fan 52, and the exhaust fan 52 discharges the return air into the second space through the exhaust outlet 24. The heat exchange unit 60 has two passages therein, which correspond to the air inlet passage and the air exhaust passage respectively and are isolated from each other.

[0054] According to an embodiment of the present invention, Figure 2-Figure 5 As shown, the air flow separator includes: a first air flow separator 31, a second air flow separator 32 and a third air flow separator 33. The first air flow separator 31 extends from the air inlet side edge 301 between the air inlet surface of the heat exchange unit located in the air inlet path and the air inlet surface 44 of the heat exchange unit located in the exhaust path to the third side wall; the second air flow separator 32 extends downward from the end of the first air flow separator 31 close to the exhaust air inlet 22 to the bottom wall 106, and is arranged opposite to the exhaust air inlet 22; the third air flow separator 33 is fixed on the top wall and connects the top wall and the third side wall; the length of the first air flow separator 31 from the direction of the heat exchange unit 40 to the third side wall gradually shortens from the side of the supply air inlet 21 to the side of the exhaust air inlet 22, and a gap for air flow in the air inlet path is provided between the first air flow separator 31 and the third air flow separator 33 and the third side wall.

[0055] like Figure 2-Figure 5 As shown, the first airflow dividing plate 31 and the third airflow dividing plate 33 form a semi-enclosed structure open to the heat exchange unit 40 and the exhaust air inlet 22, and the interior of the semi-enclosed structure constitutes a partial space on the upstream side of the exhaust air path of the heat exchange unit 40. The front side edge 311 of the first air flow separator matches the end portion 61 of the filter unit facing the air supply inlet, and the rear side edge 312 of the first air flow separator corresponds to the end portion 62 of the filter unit facing the exhaust air inlet and is arranged on the upper surface of the filter unit 60; the size of the front side edge 311 of the first air flow separator matches the top side edge size formed by the intersection of the end face of the end portion 61 of the filter unit facing the air supply inlet and the upper surface of the filter unit 60, and the size of the rear side edge 312 of the first air flow separator matches the sum of the top side edge size formed by the intersection of the end face of the end portion 62 of the filter unit facing the exhaust air inlet and the upper surface of the filter unit 60 and the width size of the main space of the air inlet path, that is, the first air flow separator 31 is a right-angled trapezoidal design, the front side edge 311 of the first air flow separator matches and is connected to the end portion 61 of the heat exchange unit facing the air supply inlet, and the rear side edge 312 of the first air flow separator abuts against the third side wall toward the vertex of the third side wall. The first air flow dividing plate 31 can be used to separate the exhaust air path and the air inlet air path, and at the same time provide an air guiding effect in the exhaust air path for the exhaust air.

[0056] like Figure 2-Figure 5As shown, the second airflow separator 32 extends downward from the end of the first airflow separator 31 near the exhaust air inlet 22 to the bottom wall 106, and is arranged opposite to the exhaust air inlet 22. Through the obstruction of the second airflow separator 32, the indoor air flows from the exhaust air inlet 22 into the frame 100 and then flows to the top of the first airflow separator 31. The outer surface of the second airflow separator 32 is spaced a distance from the inner surface of the second side wall 102 of the heat exchange device and is arranged perpendicular to the setting direction of the filter unit 60. Specifically, the upper side edge 321 of the second airflow separator is fixedly connected to the top wall, the lower side edge 322 of the second airflow separator is fixedly connected to the bottom wall 106, and the side facing the third side wall is fixedly connected to the inner surface of the third side wall. The planar shape of the second airflow separator 32 is irregular. The second airflow separator 32 includes: an upper hanging side 323 of the second airflow separator and a return air outlet side 324 of the second airflow separator. The return air outlet side 324 of the second airflow separator matches the rear side 312 of the first airflow separator. The inner surface of the portion of the second airflow separator 32 corresponding to the return air outlet side 324 of the second airflow separator is used to fix the connection between the end 62 of the filter unit and the exhaust air inlet, and is also used to separate the air inlet and exhaust air paths. The upper hanging side 323 of the second airflow separator matches and connects to the end face of the end 42 of the heat exchange unit on the exhaust air inlet side and the rear side 442 of the air inlet surface of the heat exchange unit in the exhaust air path. Therefore, the second airflow separator 32 is also used to provide a fixed connection position for the end 42 of the heat exchange unit on the exhaust air inlet side. The second airflow divider 32 also serves to separate the exhaust duct from the heat exchange unit 40, and to separate the exhaust inlet and outlet spaces of the exhaust duct. Furthermore, a gap between the outer surface of the second airflow divider 32 and the inner surface of the second sidewall 102, which is spaced a certain distance apart, forms a buffer space for the exhaust duct, thereby increasing the exhaust duct area and reducing wind resistance.

[0057] like Figure 2-Figure 5 As shown, with the above structure, compared to the prior art, the first airflow divider 31 separating the exhaust and inlet airflow paths can be positioned closer to the middle of the frame 100 in the longitudinal direction, and the distance between the first airflow divider 31 and the bottom wall 106 can be increased. This means that the sizes of the exhaust and inlet airflow paths can be adjusted according to actual needs, making them closer in size. This, in turn, makes the airflow volume and wind speed of the exhaust and inlet airflow paths closer, thereby improving heat exchange efficiency.

[0058] like Figure 2-Figure 5As shown, the edge of the first airflow divider 31 near the third sidewall is the third sidewall edge 313 of the first airflow divider, and the edge of the first airflow divider 31 near the heat exchange unit 40 is the heat exchange unit 40 side edge of the first airflow divider 31. The length of the first airflow divider 31 from the heat exchange unit 40 toward the third sidewall refers to the distance from the third sidewall edge 313 of the first airflow divider to the side edge of the heat exchange unit 40.

[0059] like Figure 2-Figure 5 As shown, the length of the first airflow separator 31 from the direction of the heat exchange unit 40 toward the third side wall gradually shortens from the exhaust air inlet 22 side to the supply air inlet 21 side. In other words, the distance between the third side wall edge 313 of the first airflow separator 31 and the side edge of the heat exchange unit 40 gradually shortens from the exhaust air inlet 22 side to the supply air inlet 21 side. Through the above structure, the exhaust air path on the upstream side of the heat exchange unit 40 is inclined from the exhaust air inlet 22 side to the supply air inlet 21 side toward the heat exchange unit 40 side. Under the guidance of the exhaust air path inclined toward the heat exchange unit 40 side, air can flow smoothly toward the heat exchange unit 40, reducing turbulence and increasing air volume.

[0060] like Figure 2-Figure 5 As shown, gaps are provided between the first and third airflow dividers 31, 33, and the third sidewall for air flow in the inlet path. Air entering the inlet path from the supply air inlet 21 flows through the gaps between the first and third airflow dividers 31, 33, and the third sidewall, then passes between the first airflow divider 31 and the bottom wall 106 before reaching the air inlet surface of the heat exchange unit 40 located in the inlet path. In other words, since the air inlet path has a gap between the air flow dividing plate and the third side wall, in addition to the space between the first air flow dividing plate 31 and the bottom wall 106, air can also flow through the space between the third air flow dividing plate 33 and the third side wall and the space between the first air flow dividing plate 31 and the third side wall. In this way, even if the space between the first air flow dividing plate 31 and the bottom wall 106 is set to be smaller in order to achieve miniaturization of the frame 100, the space between the third air flow dividing plate 33 and the third side wall and the space between the first air flow dividing plate 31 and the third side wall can be used as the air inlet path, thereby making the air inlet path smoother and closer to the air volume and wind speed of the exhaust path.

[0061] Based on the above-mentioned air flow separation plate and its related structure, while achieving miniaturization, the air inlet and exhaust air paths are smoother, the wind speed is increased, and the air volume is increased; in addition, the performance of the heat exchange device is improved, and the fan speed can be reduced while keeping the air volume unchanged, saving energy and reducing noise.

[0062] According to an embodiment of the present invention, Figure 2-Figure 5 As shown, there is a certain distance between the second air flow dividing plate 32 and the exhaust air inlet 22 .

[0063] According to the above structure, Figure 2-Figure 5 As shown, through the obstruction of the second air flow partition plate 32, when the indoor air flows from the exhaust air inlet 22 into the frame 100 and then flows to the top of the first air flow partition plate 31, the second air flow partition plate 32 originally fits with the exhaust air inlet 22, and the actual air intake area of ​​the indoor air entering from the exhaust air inlet 22 is limited to above the first air flow partition plate 31. Since there is a certain distance between the second air flow partition plate 32 and the exhaust air inlet 22, the second air flow partition plate 32 does not fit with the exhaust air inlet 22, and the actual air intake area of ​​the exhaust air inlet 22 is not restricted between the top wall and the bottom wall, the actual air intake area of ​​the exhaust air inlet 22 can be increased, thereby reducing the resistance of the exhaust air path.

[0064] Specifically, the distance between the second air flow separator 32 and the exhaust air inlet 22 can form a gap between the second side wall 102 and the second air flow separator 32, and the gap is set corresponding to the position of the exhaust air inlet 22, so that the air inlet area of ​​the exhaust air path is increased and the wind resistance of the air inlet space of the exhaust air path is reduced.

[0065] Thereby, the pressure of the air introduced into the exhaust air duct by the exhaust air inlet 22 can be reduced, thereby increasing the air volume introduced into the exhaust air duct by the exhaust air inlet 22.

[0066] According to an embodiment of the present invention, Figure 2-Figure 5 As shown, the third airflow dividing plate 33 is inclined toward the first airflow dividing plate 31 from the inner periphery of the frame 100 to the outer periphery of the frame 100 , so that the air inlet path has a gap formed between the third airflow dividing plate 33 and the top wall.

[0067] like Figure 2-Figure 5 As shown, the third air flow dividing plate 33 is inclined from the inner peripheral side of the frame 100 to the outer peripheral side of the frame 100 toward the first air flow dividing plate 31, and the air supply and inlet air path has a gap between the third air flow dividing plate 33 and the top wall, so that the outdoor air flows into the frame 100 from the air supply inlet 21 and then flows to the gap between the third air flow dividing plate 33 and the top wall; wherein the inner peripheral side of the frame 100 refers to the side close to the longitudinal center axis of the frame 100, and the outer peripheral side of the frame 100 refers to the side relative to the inner peripheral side of the frame 100 and away from the longitudinal center axis of the frame 100.

[0068] like Figure 2-Figure 5As shown, the third air flow separator 33 is fixedly connected to the upper side edge 354 of the wind shield, and forms an acute angle with the top wall of the heat exchange device. The upper side edge 331 of the third air flow separator is fixedly connected to the top wall of the heat exchange device; the third air flow separator 33 is obliquely mounted on the upper inclined edge 356 of the wind shield 35, so that the air path area of ​​the exhaust air path is expanded while the air inlet air path area is expanded as much as possible. At the same time, the inner surface of the third air flow separator 33 serves as a wind guide for the exhaust air path, and the outer surface serves as a wind guide for the air inlet air path.

[0069] According to the above structure, Figure 2-Figure 5 As shown, the air entering the air inlet duct from the air supply inlet 21 originally flows to the gap between the first air flow dividing plate 31 and the third air flow dividing plate 33 and the third side wall. Since the air inlet duct has a gap between the third air flow dividing plate 33 and the top wall, in addition to the space between the third air flow dividing plate 33 and the third side wall, the air can also flow through the space between the third air flow dividing plate 33 and the top wall.

[0070] Moreover, since the third air flow separation plate 33 is inclined from the inner peripheral side of the frame 100 to the outer peripheral side of the frame 100 toward the first air flow separation plate 31, the third air flow separation plate 33 has the function of guiding air toward the side of the first air flow separation plate 31. The air can be guided toward the side of the first air flow separation plate 31 through the gap between the third air flow separation plate 33 and the top wall, and flow to the gap between the first air flow separation plate 31 and the third air flow separation plate 33 and the third side wall.

[0071] Therefore, even if the space between the first airflow dividing plate 31 and the bottom wall 106 is further set to be smaller in order to achieve miniaturization of the frame 100, the space between the third airflow dividing plate 33 and the top wall can be used as an air inlet path and the air can be guided through the third airflow dividing plate 33, thereby making the air inlet path smoother and closer to the air volume and wind speed of the exhaust path.

[0072] It can be seen that based on the above-mentioned air flow separation plate and the air supply inlet 21 and the exhaust inlet 22, the air inlet path is made smoother, the wind speed of the air inlet path is increased, and the air volume is improved.

[0073] According to an embodiment of the present invention, Figure 2-Figure 5As shown, the edge of the first air flow separator 31 close to the third side wall side is the third side wall side edge 313 of the first air flow separator, and the edge of the third air flow separator 33 close to the third side wall side is the third side wall side edge 333 of the third air flow separator; wherein, the heat exchange device also includes: a fourth air flow separator 34, the fourth air flow separator 34 is arranged between the third side wall side edge 333 of the third air flow separator and the third side wall side edge 313 of the first air flow separator, and the third air flow separator 33 and the first air flow separator 31 are connected through the fourth air flow separator 34.

[0074] like Figure 2-Figure 5 As shown, the fourth airflow divider 34 is disposed between the third sidewall edge 333 of the third airflow divider and the third sidewall edge 313 of the first airflow divider. The fourth airflow divider 34 can be disposed obliquely relative to the third sidewall, so that a conical gap corresponding to the air inlet path of the supply air inlet 21 can be formed between the third sidewall and the fourth airflow divider 34. This can also expand the air inlet space corresponding to the exhaust air inlet 22 between the fourth airflow divider 34, the first airflow divider 31, and the third airflow divider 33. That is, without expanding the size of the frame 100, the air inlet space of both the air inlet path and the exhaust air path can be maximized, and the spatial dimensions can be closer.

[0075] According to the above structure, Figure 2-Figure 5 As shown, when the outdoor air flows from the space between the third airflow divider 33 and the top wall, through the gaps between the first airflow divider 31 and the third airflow divider 33 and the third side wall, and toward the space between the first airflow divider 31 and the bottom wall 106, the air that originally flowed along the third airflow divider 33 toward the gaps between the first airflow divider 31 and the third airflow divider 33 and the third side wall suddenly changes direction and flows along the first airflow divider 31 toward the space between the first airflow divider 31 and the bottom wall 106. Because the fourth airflow divider 34 connects the third airflow divider 33 and the first airflow divider 31, the air flows along the third airflow divider 33 toward the gaps between the first airflow divider 31 and the third airflow divider 33 and the third side wall. Then, under the guidance of the fourth airflow divider 34, the air flows toward the space between the first airflow divider 31 and the bottom wall 106. In other words, because the fourth airflow divider 34 connects the third airflow divider 33 and the first airflow divider 31, the fourth airflow divider 34 has the function of guiding air toward the first airflow divider 31. At the same time, corresponding to the air inlet path of the air supply inlet 21 , the fourth air flow dividing plate 34 can also have the function of guiding air toward the air inlet surface on the side of the filter unit 60 .

[0076] Therefore, even if the space between the first airflow dividing plate 31 and the bottom wall 106 is further set to be smaller in order to miniaturize the frame 100, the air can be guided by the fourth airflow dividing plate 34, so that the air inlet path is smoother and closer to the air volume and wind speed of the exhaust path.

[0077] It can be seen that based on the air flow separation plate and its related structures, the pressure of the air introduced into the air inlet 21 by the air supply inlet 21 can be reduced, thereby increasing the air volume introduced into the air inlet duct by the air supply inlet 21.

[0078] According to an embodiment of the present invention, Figure 2-Figure 5 As shown, the heat exchange device also includes: a filter unit 60 and a wind shield 35. The filter unit 60 is used to filter the air entering the frame 100 from the air supply inlet, and is arranged between the first air flow separation plate 31 and the bottom wall 106; the wind shield 35 is arranged on the downstream side of the air supply inlet, extending downward from the air supply inlet side edge 332 of the third air flow separation plate 33 close to the air supply inlet side to the bottom wall 106 of the frame 100, and is a certain distance away from the first side wall 101, and blocks the end of the filter unit 60 facing the air supply inlet.

[0079] like Figure 2-Figure 5 As shown, the filter unit 60 is disposed between the first airflow separator 31 and the bottom wall 106. Specifically, the filter unit 60 is disposed between the first airflow separator 31 and the bottom wall 106 on the upstream side of the heat exchange unit. If the longitudinal cross-section of the filter unit 60 is square or rectangular, the upper end of the filter unit 60 is in contact with the first airflow separator 31, the lower end of the filter unit 60 is not in contact with the bottom wall 106, the end of the filter unit 60 facing the supply air inlet is parallel to the longitudinal cross-section of the filter unit 60 and is in contact with the windshield 35, and the end of the filter unit 60 facing the exhaust air inlet is parallel to the longitudinal cross-section of the filter unit 60 and is in contact with the second airflow separator 32. The air inlet surface of the filter unit 60 located in the air inlet path faces the third side wall.

[0080] like Figure 2-Figure 5As shown, the heat exchange unit 40 forms an air inlet exchange space between the air inlet surface of the air inlet and the air outlet surface of the filter unit 60. This allows outdoor air entering the air inlet to be filtered by the filter unit 60, preventing unfiltered outdoor air from entering the heat exchange unit 40 and potentially affecting the heat exchange unit 40 and its subsequent structures, such as equipment, such as dust accumulation. The filtered air is then directed into the heat exchange unit 40 for heat exchange, thereby improving heat exchange efficiency. This air inlet exchange space provides a larger buffer space for the filtered air inlet after entering the frame 100, increasing the exchange area and minimizing air inlet resistance. It also expands the air inlet area of ​​the filter unit 60, further increasing the distribution area of ​​the air inlet, increasing the air inlet capacity of the filter unit 60, reducing air inlet resistance, and improving filtration efficiency. The heat exchange unit can be a heat exchange element, and the filter unit 60 can be a filter or a filter mesh.

[0081] It should be noted that, in the embodiments of the present invention, Figure 2-Figure 5 As shown, the filter unit is arranged parallel to the direction of the "supply air inlet 21-exhaust air inlet 22" line. Without changing or reducing the size of the heat exchange device, the filter unit can be extended as much as possible compared to conventional filter units. Therefore, the air intake structure is further extended as much as possible in the direction of the supply air inlet 21-exhaust air inlet 22, thereby expanding the distribution area of ​​the air intake and exhaust air paths, further reducing the air intake and exhaust wind resistance in the air intake structure. It can be seen that the air intake path of the present invention achieves the goal of maintaining or even enhancing the overall ventilation performance while further reducing the size of the heat exchange device.

[0082] like Figure 2-Figure 5 As shown, the windshield 35 is located downstream of the supply air inlet 21, a certain distance from the first sidewall 101, and blocks the end 61 of the filter unit facing the supply air inlet. This allows outdoor air to enter the space between the first sidewall 101 and the windshield 35 from the supply air inlet 21, and then flow into the space between the filter unit 60 and the third sidewall. Specifically, the windshield 35 can be perpendicular to the orientation of the filter unit 60, and the outer surface of the windshield 35 can be spaced a specific distance from the inner surface of the first sidewall 101 of the heat exchange device. The windshield 35 can have two parallel lateral edges 353 for securing to the top and bottom walls 106, respectively. The windshield 35 can also conform to the shape of the end 61 of the filter unit facing the supply air inlet to separate the space between the heat exchange unit 40 and the supply air inlet. Furthermore, the windshield 35 can be fixedly connected to the first sidewall 101 to separate the inlet and exhaust air paths.

[0083] According to the above structure, Figure 2-Figure 5As shown, when outdoor air enters the air inlet path from the supply air inlet, the air that originally flowed from the supply air inlet 21 only into the space between the third airflow divider 33 and the top wall and the space between the filter unit 60 and the third side wall can now flow not only into the space between the third airflow divider 33 and the top wall and the space between the filter unit 60 and the third side wall, but also through the space between the windshield 35 and the first side wall 101.

[0084] Therefore, even if the space between the air inlet surface of the filter unit 60 and the third side wall in the air inlet path is set smaller in order to miniaturize the frame 100, the space between the wind shield 35 and the first side wall 101 can be used as the air inlet path, making the air inlet path smoother.

[0085] It can be seen that based on the air flow separation plate, the air inlet path is smoother, the wind speed of the air inlet path is increased, and the air volume is increased, so as to achieve the effect of reducing the shell size of the heat exchange device without affecting the air volume.

[0086] According to an embodiment of the present invention, Figure 2-Figure 5 As shown, the windshield 35 includes a shielding portion 350 and a connecting portion 450. The shielding portion 350 is a plate that shields the end of the filter unit 60 facing the air inlet. The edge of the shielding portion 350 away from the third side wall is a longitudinal edge 351, and the edge of the shielding portion 350 that abuts the bottom wall 106 is a transverse edge 353. The edge of the shielding portion 350 that abuts the top wall 105 is an upper side edge 354 of the windshield. The connecting portion 450 connects the longitudinal edge 351 and the transverse edge 353 and extends from the shielding portion 350 to the first side wall 101.

[0087] like Figure 2-Figure 5 As shown, the shielding portion 350 shields the end 61 of the filter unit facing the air supply inlet. The shielding portion 350 forms the main structure of the windshield 35 and is a plate-shaped structure. The specific planar shape of the shielding portion 350 is not regular; it can be tailored to match the shape of the end 41 of the heat exchange unit on the air supply inlet side and the corresponding end surface shape of the end 61 of the filter unit facing the air supply inlet.

[0088] like Figure 2-Figure 5 As shown, the connecting portion 450 connects the longitudinal edge 351 and the transverse edge 353, and extends from the side of the shielding portion 350 to the first side wall 101, so that the windshield 35 and the first side wall 101 form a semi-enclosed structure that is open to the third side wall and the air supply inlet side. The interior of the semi-enclosed structure constitutes the air inlet path on the upstream side of the filter unit 60;

[0089] According to the above structure, Figure 2-Figure 5As shown, outdoor air enters the space formed by the semi-enclosed structure from the air supply inlet, flows through the shielding portion 350 to the space between the third air flow dividing plate 33 and the top wall and the space between the filter unit 60 and the third side wall, and further flows to the air inlet surface of the heat exchange unit 40 located in the air inlet path.

[0090] The windshield 35 can be realized only by the shielding portion 350 and the connecting portion 450. It is at a certain distance from the first side wall and shields the end 61 of the filter unit facing the air supply inlet. The structure is simple and compact and the practicability is high.

[0091] According to an embodiment of the present invention, Figure 2-Figure 5 As shown, a gap is provided between the longitudinal edge 351 and the bottom wall, located in the air inlet path downstream of the heat exchange unit. The edge between the longitudinal edge 351 and the transverse edge 353 is a lower inclined edge 352, which slopes from the end of the longitudinal edge 351 near the bottom wall toward the third sidewall toward the transverse edge 353. The edge that slopes from the end of the upper side edge 354 of the windshield near the third sidewall 13 toward the third sidewall toward the bottom wall 106 is an upper inclined edge 356. The connecting portion 450 includes a first connecting portion 451 and a second connecting portion 452. The first connecting portion 451 extends from the longitudinal edge 351 to the first sidewall; the second connecting portion 452 extends from the lower inclined edge 352 to the first sidewall.

[0092] like Figure 2-Figure 5 As shown, a gap of a certain distance is provided between the longitudinal edge 351 and the bottom wall, which is located at the air inlet path on the downstream side of the heat exchange unit; the edge between the longitudinal edge 351 and the transverse edge 353 is a lower inclined edge 352, and the lower inclined edge 352 is inclined from the end of the longitudinal edge 351 close to the bottom wall side to the transverse edge 353 on the third side wall side; the connecting part 450 includes: a first connecting part 451 extending from the longitudinal edge 351 to the first side wall; a second connecting part 452 extending from the lower inclined edge 352 to the first side wall, so that the space between the second connecting part 452 and the bottom wall constitutes the exhaust path on the downstream side of the heat exchange unit.

[0093] like Figure 2-Figure 5As shown, the shielding portion 350 may have two inclined edges: an upper inclined edge 356 and a lower inclined edge 352. The upper inclined edge 356 is matched and fixedly connected to the air supply inlet side edge 332 of the third airflow divider 33, used to separate the air inlet and exhaust air paths, and provides a connection position for the air guide space corresponding to the air inlet of the third airflow divider 33. It also provides a connection position for the air guide space corresponding to the exhaust air path of the third airflow divider 33, thereby maximizing the balance of the air path areas of the air inlet and exhaust air paths. The lower inclined edge 352 of the shielding portion 350 is matched and fixedly connected to the rear side edge 652 of the second connecting portion, providing a connection and fixing position for the second connecting portion 452. When the second connecting portion 452 is connected and fixed to the first side wall 101 at the front side edge 651 of the second connecting portion, a gap is formed between the windshield 35 and the first side wall 101, further expanding the air inlet path.

[0094] like Figure 2-Figure 5 As shown, the first connecting portion 451 is arranged perpendicular to the surface of the shielding portion 350 and away from the air supply inlet 21. Specifically, the front side 553 of the first connecting portion can be fixedly connected to the first side wall 101, the upper side 551 of the first connecting portion can be fixedly connected to the top wall, and the lower side 552 of the first connecting portion is fixedly connected to the second connecting portion 452, so as to cooperate with the shielding portion 350 to achieve the spacing between the air inlet and exhaust air paths, and to form a gap between the shielding portion 350 and the first side wall 101, so that the air path area of ​​the air inlet path is further increased. The first connecting portion 451 and the shielding portion 350 can be set to be integrally formed. The width size setting of the first connecting portion 451 and the second connecting portion 452 can match the width of the gap formed between the shielding portion 350 and the first side wall 101.

[0095] According to the above structure, Figure 2-Figure 5 As shown, the space between the second connecting portion 452 and the bottom wall forms the air inlet path on the downstream side of the heat exchange unit. Air entering the exhaust path from the exhaust inlet passes through the heat exchange unit and flows to the space between the second connecting portion 452 and the bottom wall on the downstream side of the heat exchange unit. This increases the exhaust path on the downstream side of the heat exchange unit compared to FIG6 , reducing resistance in the exhaust path and thereby increasing the air volume introduced by the exhaust path. The main body of the second connecting portion 452 is an inclined portion that matches the inclination angle of the exhaust side of the heat exchange unit relative to the bottom wall. This can further expand the air path area of ​​the exhaust path corresponding to the heat exchange unit to reduce wind resistance in the exhaust path. The second connecting portion 452 can also be used to cooperate with the shielding portion 350 to separate the air inlet and exhaust paths. Therefore, the design of the windshield 35 and the second connecting portion 452 can simultaneously achieve multiple technical effects, greatly improving the integration of the heat exchange device and providing support for the reduction in size of the heat exchange device.

[0096] It can be seen that based on the structure of the shielding portion 350 and the connecting portion 450, the exhaust air path can be made smoother, the wind speed of the exhaust air path can be increased, and the air volume can be improved.

[0097] The present invention provides a heat exchange device, comprising: a frame, an air supply inlet, an exhaust inlet, an air inlet path, an air exhaust path, a heat exchange unit and an air flow dividing plate. wherein, the angle formed by the air inlet surface of the heat exchange unit located in the exhaust air path and the plane of the top wall of the frame, and the angle formed by the air inlet surface of the heat exchange unit located in the air inlet air path and the plane of the bottom wall are both greater than 0 degrees and less than 90 degrees; the air flow separation plate comprises: a first air flow separation plate, a second air flow separation plate and a third air flow separation plate, the first air flow separation plate extends from the air inlet side edge between the air inlet surface of the heat exchange unit located in the air inlet air path and the air inlet surface located in the exhaust air path to the third side wall; the second air flow separation plate extends downward from the end of the first air flow separation plate close to the exhaust air inlet side to the bottom wall, and is arranged opposite to the exhaust air inlet; the third air flow separation plate is fixed on the top wall and connects the top wall and the third side wall; the length of the first air flow separation plate from the direction of the heat exchange unit to the third side wall gradually shortens from the exhaust air inlet side to the supply air inlet side; a gap for air flow in the air inlet path is provided between the first air flow separation plate and the third air flow separation plate and the third side wall. Therefore, the heat exchange device of the present invention can make the air volume between the exhaust air path and the air inlet air path more balanced, thereby improving the heat exchange efficiency while achieving structural miniaturization.

[0098] So far, the embodiments of the present invention have been described in detail with reference to the accompanying drawings.

[0099] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A heat exchange device comprising: The frame comprises a top wall, a bottom wall, a first side wall connecting the top wall and the bottom wall, a second side wall facing the first side wall, and a third side wall connecting the first side wall and the second side wall; an air supply inlet, which is an opening provided on the first side wall for allowing air from the second space to enter the frame; an exhaust air inlet, which is an opening provided on the second side wall and located on a side close to the third side wall together with the supply air inlet, for allowing air from the first space to enter the frame; an air inlet passage, guiding the air in the frame toward the first space; an exhaust air passage, separated from the air inlet air passage, and guiding the air in the frame to the second space; a heat exchange unit, disposed in the air inlet passage and the air outlet passage, so that the air passing through the air inlet passage and the air passing through the air outlet passage exchange energy with each other; An air flow separation plate, separating the air inlet path and the air exhaust path; It is characterized by: The angle formed by the air inlet surface of the heat exchange unit located in the exhaust air path and the plane where the top wall of the frame is located, and the angle formed by the air inlet surface of the heat exchange unit located in the air inlet air path and the plane where the bottom wall is located are both greater than 0 degrees and less than 90 degrees; The air flow separation plate comprises: a first airflow dividing plate extending from an air inlet side edge of the heat exchange unit between an air inlet surface in the air inlet passage and an air inlet surface in the air exhaust passage toward the third side wall, wherein an edge of the first airflow dividing plate close to the third side wall is a third side wall side edge of the first airflow dividing plate; a second airflow dividing plate extending downward from an end portion of the first airflow dividing plate close to the exhaust air inlet to the bottom wall and arranged facing the exhaust air inlet; a third airflow separator plate fixed on the top wall and connecting the top wall and the third side wall, wherein an edge of the third airflow separator plate close to the third side wall is a third side wall side edge of the third airflow separator plate; a fourth airflow separator plate, disposed between a side edge of the third side wall of the third airflow separator plate and a side edge of the third side wall of the first airflow separator plate; the third airflow separator plate and the first airflow separator plate are connected via the fourth airflow separator plate; Wherein, the length of the first air flow dividing plate from the direction of the heat exchange unit to the third side wall gradually shortens from the exhaust air inlet side to the supply air inlet side; Gaps for air flow in the air inlet duct are provided between the first airflow dividing plate, the third airflow dividing plate and the third side wall.

2. The heat exchange device according to claim 1, characterized in that: There is a certain distance between the second air flow dividing plate and the exhaust air inlet.

3. The heat exchange device according to claim 2, characterized in that: The third airflow partition plate is inclined toward the first airflow partition plate from the inner periphery of the frame toward the outer periphery of the frame, so that the air inlet passage has a gap formed between the third airflow partition plate and the top wall.

4. The heat exchange device according to claim 1, wherein: The heat exchange device further comprises: a filter unit, for filtering the air entering the frame from the air supply inlet, and disposed between the first air flow dividing plate and the bottom wall; The wind shield is arranged on the downstream side of the air supply inlet, extending downward from the air supply inlet side edge of the third air flow separation plate close to the air supply inlet side to the bottom wall, with a certain distance from the first side wall, and blocking the end of the filter unit facing the air supply inlet.

5. The heat exchange device according to claim 4, characterized in that The windshield comprises: The shielding portion is a plate that shields the end portion of the filter unit facing the air inlet, the edge of the shielding portion away from the third side wall is a longitudinal edge, and the edge of the shielding portion in contact with the bottom wall is a transverse edge; A connecting portion connects the longitudinal edge and the transverse edge, and extends from the shielding portion to the first side wall.

6. The heat exchange device according to claim 5, characterized in that: A gap is provided between the longitudinal edge and the bottom wall, and the air inlet passage is located on the downstream side of the heat exchange unit; The edge between the longitudinal edge and the transverse edge is a downwardly inclined edge, and the downwardly inclined edge is inclined from the end of the longitudinal edge close to the bottom wall side toward the third side wall side toward the transverse edge; The connecting portion includes: a first connecting portion extending from the longitudinal edge to the first side wall; The second connecting portion extends from the lower inclined edge to the first side wall.

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