Ventilation device and heat exchange equipment equipped with the same

Abstract

The present invention relates to a ventilation device and a heat exchange equipment equipped with the same. The ventilation device is installed on a ceiling with an installation space formed therein. The ceiling is provided with an installation port connecting the installation space with the external environment. The ventilation device is installed on the installation port. The ventilation device is provided with an inspection port and a vent. The ventilation device can be switched between a ventilation state and a maintenance state. When the ventilation device is in the ventilation state, the installation space is connected to the external environment through the vent. When the ventilation device is in the maintenance state, the installation space is connected to the external environment through the inspection port. The above-mentioned ventilation device is independently installed on the installation port, so the size of the inspection port can be set according to the needs of maintenance and replacement without being restricted by the structure of the air duct machine body. When the heat exchange equipment equipped with the ventilation device is in a normal working state, the air duct machine body discharges or returns air through the vent. When the air duct machine needs to be repaired or replaced, the maintenance personnel can repair or replace the air duct machine body in the installation space through the inspection port.

Description

Technical Field

[0001] The invention relates to the field of heat exchange equipment, in particular to a ventilation device and heat exchange equipment provided with the same. Background Art

[0002] With the advancement of technology and the improvement of living standards, people have higher and higher requirements for living environment. Duct air conditioners can achieve indoor temperature regulation while not affecting the beauty of the indoor environment because they are installed in a hidden way in the ceiling. Therefore, they are increasingly used in various types of residences.

[0003] However, while the concealed installation improves the aesthetics, the early installation, subsequent cleaning, maintenance and replacement of the duct unit are all very difficult. During the early installation process, the engineering staff needs to conduct a comprehensive and careful consideration of the installation location and installation method of the unit, which delays the construction progress. In the subsequent maintenance and replacement of the duct unit, it is often necessary to destroy the ceiling, which seriously affects the maintenance and replacement progress. Summary of the invention

[0004] Based on this, it is necessary to provide a ventilation device and heat exchange equipment equipped with the same that effectively reduce the difficulty of early installation, later maintenance and replacement of duct machines in order to address the difficulty of early installation, later maintenance and replacement of duct machines.

[0005] A ventilation device is installed on a ceiling with an installation space, the ceiling is provided with an installation opening connecting the installation space with the external environment, characterized in that the ventilation device is installed on the installation opening, the ventilation device is provided with an inspection opening and a ventilation opening, and the ventilation device can be switched between a ventilation state and an inspection state;

[0006] Wherein, when the ventilation device is in the ventilation state, the installation space is connected to the external environment through the ventilation port; when the ventilation device is in the maintenance state, the installation space is connected to the external environment through the maintenance port.

[0007] The ventilation device is independently installed at the installation opening, so the size of the inspection opening can be set according to the needs of maintenance and replacement without being restricted by the structure of the duct machine body. When the heat exchange equipment equipped with the ventilation device is in normal working condition, the duct machine body discharges or returns air through the ventilation opening. When the duct machine needs to be repaired or replaced, the maintenance personnel can repair the duct machine body in the installation space through the inspection opening, and can also replace the duct machine body through the inspection opening.

[0008] In one embodiment, the ventilation device includes a mounting structure and a ventilation structure, the mounting structure is mounted on the mounting port and forms the inspection port, the ventilation port is opened on the ventilation structure, and the ventilation structure is rotatably connected to the mounting port to cover or open the inspection port; when the ventilation structure covers the inspection port, the ventilation device is in the ventilation state; when the ventilation structure opens the inspection port, the ventilation device is in the inspection state.

[0009] In one embodiment, the ventilation device includes a first ventilation unit and a second ventilation unit, the first ventilation unit and the second ventilation unit together form the inspection port, the first ventilation unit and the second ventilation unit are both provided with the ventilation port, and a preset angle is formed between the first ventilation unit and the second ventilation unit.

[0010] In one embodiment, the first ventilation unit comprises a first mounting structure and a first ventilation structure, the first mounting structure is mounted on the mounting opening, and the first ventilation structure is rotatably connected to the first mounting structure, and the second ventilation unit comprises a second mounting structure and a second ventilation structure, the second mounting structure is mounted on the mounting opening, and the second ventilation structure is rotatably connected to the second mounting structure;

[0011] Among them, the first mounting structure and the second mounting structure are respectively arranged around part of the edge of the mounting opening to jointly form the inspection opening, the first ventilation structure and the second ventilation structure can jointly cover the inspection opening, and at least one ventilation opening is opened on the first ventilation structure and the second ventilation structure.

[0012] In one embodiment, the rotation axis of the first ventilation structure and the rotation axis of the second ventilation structure are respectively located on opposite sides of the inspection opening, and the rotation axis of the first ventilation structure is parallel to the rotation axis of the second ventilation structure.

[0013] In one embodiment, when the first ventilation structure and the second ventilation structure jointly shield the inspection port, an end of the first ventilation structure away from its own rotation axis contacts an end of the second ventilation structure away from its own rotation axis.

[0014] In one embodiment, the first ventilation structure includes a first ventilation panel and a first air guide member, the first ventilation panel is provided with a first air outlet slot connecting the installation space with the external environment, a plurality of the first air guide members are installed at intervals in the first air outlet slot, and a vent is formed between every two adjacent first air guide members.

[0015] In one embodiment, the first ventilation unit further includes a filter module and a module mounting assembly. The module mounting assembly is disposed on a side of the first ventilation panel facing the air duct machine body. The filter module is detachably mounted on the module mounting assembly.

[0016] In one embodiment, the second ventilation structure includes a second ventilation panel and a second air guide member, the second ventilation panel is provided with a second air outlet slot connecting the installation space with the external environment, a plurality of the second air guide members are installed at intervals in the second air outlet slot, and a ventilation port is formed between every two adjacent second air guide members.

[0017] In one of the embodiments, the second ventilation panel is further provided with a return air slot connecting the installation space with the external environment, and the return air slot is spaced apart from the second air outlet slot.

[0018] A heat exchange device is installed on a suspended ceiling with an installation space, the suspended ceiling is provided with an installation opening connecting the installation space with the external environment, the heat exchange device includes the above-mentioned ventilation device, and the duct machine body is installed in the installation space.

[0019] In one embodiment, the duct machine body is installed in the installation space and is arranged corresponding to the installation port, the duct machine body is provided with at least one air port, the inspection port of the ventilation device connects the air port with the external environment, and the orthographic projection of the duct machine body on the ventilation device is located within the inspection port;

[0020] Wherein, when the heat exchange device is in a normal working state, the inspection port is in the partially open state, and when the heat exchange device is in an inspection state, the inspection port is in the fully open state.

[0021] In one of the embodiments, the air duct machine body is provided with a front air outlet and a lower air outlet, and an air outlet direction of the front air outlet intersects with an air outlet direction of the lower air outlet.

[0022] In one embodiment, the ventilation device includes a first ventilation unit and a second ventilation unit, the first ventilation unit is arranged corresponding to the front air outlet, the second ventilation unit is arranged corresponding to the lower air outlet, and the first ventilation unit and the second ventilation unit together form the inspection port.

[0023] In one of the embodiments, the duct air conditioner body is further provided with a return air port, and the return air port is arranged corresponding to the second ventilation unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is an assembly diagram of a heat exchange device installed on a suspended ceiling according to an embodiment of the present invention;

[0025] Figure 2 for Figure 1 An exploded schematic diagram of the duct machine body and ventilation device shown;

[0026] Figure 3 for Figure 2 A schematic structural diagram of a first ventilation unit of the ventilation device shown;

[0027] Figure 4 for Figure 3 An exploded view of the first ventilation device shown;

[0028] Figure 5 for Figure 2 A schematic structural diagram of a second ventilation unit of the ventilation device shown. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0032] like Figure 1 and Figure 2 As shown, a heat exchange device according to an embodiment of the present invention is at least partially installed in an indoor ceiling 300 having an installation space 310, and is used to adjust the indoor temperature.

[0033] The suspended ceiling 300 is located at the connection between the ceiling and the wall, and includes a first top surface 320 and a second top surface 340 connected to each other. The first top surface 320 is located at one side of the wall and extends from the ceiling to the ground in a vertical direction, and the second top surface 340 is located at one side of the ceiling and extends from the wall in a horizontal direction. The side of the first top surface 320 away from the ceiling intersects with the side of the second top surface 340 away from the wall, thereby forming a closed installation space 310.

[0034] The first top surface 320 is provided with a first rectangular slot, the long side of which extends in the horizontal direction, and the short side of which extends in the vertical direction. The second top surface 340 is provided with a second rectangular slot, the long side of which extends in the horizontal direction, and the short side of which extends perpendicular to the wall. Moreover, a long side of the first slot and a long side of the second slot completely overlap at the connection between the first top surface 320 and the second top surface 340. In this way, the first slot and the second slot are interconnected to form an installation port that connects the installation space 310 with the external environment. It can be understood that the shapes of the ceiling 300 and the installation port are not limited thereto, and in some embodiments, they can be set to other shapes as needed.

[0035] Please continue reading Figure 1 The heat exchange equipment includes a duct machine body 100 and a ventilation device 200. The duct machine body 100 is installed in the installation space 310 and is arranged corresponding to the installation port. The ventilation device 200 is installed at the installation port independently of the duct machine body 100. The duct machine body 100 is provided with at least one air outlet for air outlet or return air. The ventilation device 200 is provided with an inspection port and a vent that connects the vent to the external environment. The orthographic projection of the duct machine body 100 on the ventilation device 200 is located within the inspection port range. Among them, the ventilation device 200 can switch between a ventilation state and an inspection state. When the ventilation device 200 is in the ventilation state, the installation space 310 is connected to the external environment through the vent. When the ventilation device 200 is in the inspection state, the installation space 310 is connected to the external environment through the inspection port.

[0036] The ventilation device 200 of the above-mentioned heat exchange equipment is independently installed at the installation port, so the size of the inspection port can be set according to the needs of maintenance and replacement without being restricted by the structure of the air duct machine body 100. When the heat exchange equipment is in normal working condition, the air outlet of the air duct machine body 100 exhausts or returns air through the vent. When the air duct machine body 100 needs to be repaired or replaced, the installation space 310 is connected to the external environment through the inspection port. Since the orthographic projection of the air duct machine body 100 on the ventilation device 200 is located within the inspection port, there is sufficient operating space, and maintenance personnel can repair the air duct machine body 100 in the installation space 310 through the inspection port, and can also replace the air duct machine body 100 through the inspection port.

[0037] Specifically, in some embodiments, the air duct machine body 100 is roughly in a cubic structure and can be detachably mounted on a ceiling or a wall. A front air outlet is provided on a side surface of the first top surface 320 of the air duct machine body 100 close to the ceiling 300, and the front air outlet is arranged corresponding to the first empty slot provided on the first top surface 320. A lower air outlet and a lower return air outlet are provided on a side surface of the air duct machine body 100 close to the second top surface 340, and the lower air outlet and the lower return air outlet are arranged corresponding to the second empty slot provided on the second top surface 340. In this way, the ventilation directions of the front air outlet, the lower air outlet and the lower return air outlet intersect, the front air outlet discharges air in a horizontal direction, the lower air outlet discharges air in a vertical direction, and the outside air returns to the air duct machine body 100 from bottom to top through the lower return air outlet. It can be understood that in some other embodiments, the number and position of the air outlets provided in the air duct machine body 100 are not limited to this, and can be set as needed.

[0038] The ventilation device 200 includes a mounting structure and a ventilation structure. The mounting structure is mounted on the mounting opening and forms an inspection opening. The ventilation opening is opened in the ventilation structure. The ventilation structure is rotatably connected to the mounting opening to cover or open the inspection opening, so as to facilitate the maintenance or replacement of the duct machine body 100. When the ventilation structure covers the inspection opening, the ventilation device 200 is in a ventilation state. When the ventilation structure opens the inspection opening, the ventilation device 200 is in an inspection state.

[0039] Specifically in the following embodiments, the ventilation device 200 includes a first ventilation unit 230 and a second ventilation unit 250. The first ventilation unit 230 is installed in the first empty slot of the first top surface 320 to correspond to the front air outlet of the air duct machine body 100. The second ventilation unit 250 is installed in the second empty slot of the second top surface 340 to correspond to the lower air outlet and the lower return air outlet of the air duct machine body 100. In this way, the first ventilation unit 230 and the second ventilation unit 250 form a preset angle (specifically 90°) to jointly close the installation port on the ceiling 300, thereby forming a whole with the ceiling 300. The first ventilation unit 230 and the second ventilation unit 250 jointly form an inspection port while assuming the ventilation function to facilitate the maintenance or replacement of the air duct machine body 100.

[0040] like Figure 1 , Figure 3 and Figure 4 As shown, specifically in some embodiments, the first ventilation unit 230 includes a first mounting structure 232 and a first ventilation structure 234 rotatably mounted on the first mounting structure 232. The first ventilation structure 234 is mounted on the first empty slot through the first mounting structure 232, and the airflow output from the front outlet flows out through the first ventilation structure 234.

[0041] Specifically in one embodiment, the first mounting structure 232 is a rectangular frame structure with one end open, including a long side and two short sides connected to the two ends of the long side, so as to match the first empty slot to surround the first empty slot. Specifically, the cross-section of the long side and the short side of the first mounting structure 232 is "L" shaped, including a first mounting portion 2321 and a second mounting portion 2323 connected to one side of the first mounting portion 2321 and perpendicular to the first mounting portion 2321, the first mounting portion 2321 is attached to the first top surface 320, and the second mounting portion 2323 is attached to the slot wall of the first empty slot, so as to be firmly installed on the first top surface 320.

[0042] The first ventilation structure 234 includes a first ventilation panel 2341, which is a rectangular plate-like structure, and its shape matches the shape of the first mounting structure 232. The first mounting structure 232 is arranged around the outer periphery of the first ventilation panel 2341, and the long side of one side of the first ventilation panel 2341 is rotatably connected to the second mounting portion 2323 of the long side of one side of the first mounting structure 232 through a first hinge 236, so that the first empty slot can be opened or covered. Specifically in one embodiment, the two first hinges 236 are arranged at intervals along the long side direction of the first ventilation panel 2341. It can be understood that the connection method between the first ventilation panel 2341 and the first mounting structure 232 is not limited to this, and can be set as needed.

[0043] Furthermore, a first air outlet slot connecting the front air outlet with the external environment is provided on one side of the first ventilation panel 2341 close to the first hinge 236. The first air outlet slot is in the shape of a long strip extending along the length direction of the first ventilation panel 2341. A plurality of first air guide members 2343 extend along the length direction of the first air outlet slot and are installed at intervals in the width direction of the first air outlet slot. A vent is formed between two adjacent first air guide members 2343, and the airflow output from the front air outlet flows out through a plurality of vents arranged at intervals.

[0044] In one embodiment, the first ventilation structure 234 also includes a filter module 2345 and a module mounting assembly 2347. Specifically, the module mounting assembly 2347 is arranged on the side of the first ventilation panel 2341 facing the air duct machine body 100, including module mounting parts and module stoppers connecting two module mounting parts arranged at intervals in the length direction of the first ventilation panel 2341, and the two module mounting parts and the module stoppers together form a module mounting groove for mounting the filter module 2345. The two opposite side surfaces of the two module mounting parts are provided with mounting holes connected to the module mounting groove. The filter module 2345 includes a hollow filter screen mounting frame 2345b and a filter screen 2345a mounted on the filter screen mounting frame 2345b, and the opposite ends of the filter screen mounting frame 2345b are respectively provided with a sliding stopper embedded therein, and the sliding stopper can reciprocate in the length direction of the filter screen 2345a to protrude from the filter screen mounting frame 2345b and be inserted into the mounting hole on the module mounting part.

[0045] In this way, the filter mounting frame 2345b is limited in the module mounting groove, and the sliding limiter is inserted into the mounting hole of the module mounting member to prevent the filter mounting frame 2345b from loosening. The filter module 2345 is detachably mounted on the module mounting assembly 2347 through the module mounting assembly 2347, thereby filtering the airflow output from the front air outlet to ensure the cleanliness of the indoor air. It can be understood that the filter 2345a of different materials and structures can be selected according to the type of substance actually required to be filtered, so as to meet the requirements of different ventilation volumes and purification effects.

[0046] like Figure 1 and Figure 4 As shown, specifically in some embodiments, the second ventilation unit 250 includes a second mounting structure 252 and a second ventilation structure 254 rotatably mounted on the second mounting structure 252. The second ventilation structure 254 is mounted on the second empty slot through the second mounting structure 252, and the airflow output from the lower air outlet flows out through the first ventilation structure 234.

[0047] Specifically in one embodiment, the second mounting structure 252 is a rectangular frame structure with one end open, including a long side and two short sides connected to the two ends of the long side, so as to match the second empty slot to surround the second empty slot. Specifically, the cross-section of the long side and the short side of the second mounting structure 252 is "L" shaped, including a third mounting portion 2521 and a fourth mounting portion 2523 connected to one side of the third mounting portion 2521 and perpendicular to the third mounting portion 2521, the third mounting portion 2521 is attached to the second top surface 340, and the fourth mounting portion 2523 is attached to the groove wall of the second groove, so as to be firmly installed on the second top surface 340.

[0048] The second ventilation structure 254 includes a second ventilation panel 2541, which is a rectangular plate-like structure, and its shape matches the shape of the second mounting structure 252. The second mounting structure 252 is arranged around the outer periphery of the second ventilation panel 2541, and the long side of one side of the second mounting structure 252 is rotatably connected to the third mounting portion 2521 of the long side of one side of the second mounting structure 252 through a second hinge 256, so that the first empty slot can be opened or shielded. Specifically in one embodiment, the two second hinges 256 are arranged at intervals along the long side direction of the second ventilation panel 2541. It can be understood that the connection method between the second ventilation panel 2541 and the second mounting structure 252 is not limited to this, and can be set as needed.

[0049] Furthermore, a second air outlet slot connecting the front air outlet with the external environment is provided on one side of the second ventilation panel 2541 away from the second hinge 256. The second air outlet slot is in the shape of a long strip extending along the length direction of the second ventilation panel 2541. A plurality of second air guides 2543 extend along the length direction of the second air outlet slot and are installed at intervals on the second air outlet slot along the width direction of the second air outlet slot. A vent is formed between two adjacent second air guides 2543. The airflow output from the lower air outlet flows out through a plurality of vents arranged at intervals. A return air slot 2541a connecting the lower return air outlet with the external environment is provided on one side of the second ventilation panel 2541 close to the second hinge 256. The plurality of return air slots 2541a are arranged in a matrix. The air in the external environment returns to the duct machine body 100 through the return air slot 2541a and the lower return air outlet.

[0050] In this way, the first mounting structure 232 and the second mounting structure 252 are respectively arranged around the edges of the first empty slot and the second empty slot, thereby forming an inspection port by surrounding the edge of the mounting port together. The rotation axis of the first ventilation panel 2341 and the rotation axis of the second ventilation panel 2541 are respectively located on opposite sides of the inspection port and are parallel to each other. When the first ventilation structure 234 and the second ventilation structure 254 jointly shield the inspection port, the end of the first ventilation panel 2341 away from its own rotation axis and the end of the second ventilation panel 2541 away from its own rotation axis contact each other, and the angle formed between the first ventilation structure 234 and the second ventilation structure 254 is 90°. The first ventilation structure 234 and the second ventilation structure 254 jointly shield the inspection port and form a whole with the ceiling 300, and can guide the airflow to realize the normal air intake and return process of the heat exchange equipment. When the duct machine body 100 needs to be repaired or replaced, the first ventilation panel 2341 and the second ventilation panel 2541 can be rotated in opposite directions to open the first ventilation structure 234 and the second ventilation structure 254 at the same time. The first mounting structure 232 and the second mounting structure 252 are always installed on the ceiling 300 and do not need to be disassembled, so that the duct machine body 100 is completely exposed to the maintenance personnel through the inspection port, which is convenient for maintenance or replacement operations.

[0051] The ventilation device 200 and the heat exchange equipment equipped with the same can improve the installation efficiency because only one installation opening is required on the ceiling 300 to complete the installation of the duct machine body 100. Moreover, since the ventilation device 200 is independently installed at the installation opening, the duct machine body 100 can be replaced at will. More importantly, while the front and bottom air outlets are realized, the duct machine body 100 can be easily repaired and replaced, which greatly reduces the difficulty of repairing and replacing the duct machine body 100.

[0052] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0053] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A ventilation device, installed on a suspended ceiling (300) having an installation space (310), wherein the suspended ceiling (300) is provided with an installation opening for connecting the installation space (310) with the external environment, characterized in that: The ventilation device (200) comprises a first ventilation unit (230) and a second ventilation unit (250), wherein a preset angle is formed between the first ventilation unit (230) and the second ventilation unit (250); The first ventilation unit (230) comprises a first mounting structure (232) and a first ventilation structure (234), the first mounting structure (232) being mounted on the mounting opening, and the first ventilation structure (234) being rotatably connected to the first mounting structure (232); The second ventilation unit (250) comprises a second mounting structure (252) and a second ventilation structure (254); the second mounting structure (252) is mounted on the mounting opening; the second ventilation structure (254) can be rotatably connected to the second mounting structure (252); the first mounting structure (232) and the second mounting structure (252) are respectively arranged around a portion of the edge of the mounting opening to jointly form an inspection opening; the first ventilation structure (234) and the second ventilation structure (254) can jointly shield the inspection opening; the rotation axis of the first ventilation structure (234) and the rotation axis of the second ventilation structure (254) are respectively located on opposite sides of the inspection opening; at least one ventilation opening is provided on the first ventilation structure (234) and the second ventilation structure (254); when the first ventilation structure (234) and the second ventilation structure (254) jointly shield the inspection opening, an end of the first ventilation structure (234) away from its own rotation axis contacts an end of the second ventilation structure (254) away from its own rotation axis.

2. The ventilation device according to claim 1, characterized in that The rotation axis of the first ventilation structure (234) is parallel to the rotation axis of the second ventilation structure (254).

3. The ventilation device according to claim 1, characterized in that The first ventilation structure (234) comprises a first ventilation panel (2341) and a first air guide member (2343); the first ventilation panel (2341) is provided with a first air outlet slot connecting the installation space (310) with the external environment; a plurality of the first air guide members (2343) are installed at intervals in the first air outlet slot, and a ventilation opening is formed between every two adjacent first air guide members (2343).

4. The ventilation device according to claim 3, characterized in that The first ventilation unit (230) further comprises a filter module (2345) and a module mounting assembly (2347); the module mounting assembly (2347) is arranged on a side of the first ventilation panel (2341) facing the air duct machine body (100); and the filter module (2345) is detachably mounted on the module mounting assembly (2347).

5. The ventilation device according to claim 1, characterized in that The second ventilation structure (254) comprises a second ventilation panel (2541) and a second air guide member (2543); the second ventilation panel (2541) is provided with a second air outlet slot connecting the installation space (310) with the external environment; a plurality of second air guide members (2543) are installed at intervals in the second air outlet slot, and a ventilation opening is formed between every two adjacent second air guide members (2543).

6. The ventilation device according to claim 5, characterized in that The second ventilation panel (2541) is further provided with a return air slot (2541a) connecting the installation space (310) with the external environment, and the return air slot (2541a) is spaced apart from the second air outlet slot.

7. A heat exchange device, installed on a suspended ceiling (300) having an installation space (310), wherein the suspended ceiling (300) is provided with an installation opening for connecting the installation space (310) with the external environment, characterized in that: The heat exchange equipment comprises a duct machine body (100) and a ventilation device (200) according to any one of claims 1 to 6, and the duct machine body (100) is installed in the installation space (310).

8. The heat exchange device according to claim 7, characterized in that: The duct machine body (100) is installed in the installation space (310) and is arranged corresponding to the installation opening. The duct machine body (100) is provided with at least one air outlet. The inspection opening of the ventilation device (200) connects the air outlet with the external environment. The orthographic projection of the duct machine body (100) on the ventilation device (200) is located within the inspection opening.

9. The heat exchange device according to claim 8, characterized in that: The air duct machine body (100) is provided with a front air outlet and a lower air outlet, and the air outlet direction of the front air outlet intersects with the air outlet direction of the lower air outlet.

10. The heat exchange device according to claim 9, characterized in that: The first ventilation unit (230) is arranged corresponding to the front air outlet, the second ventilation unit (250) is arranged corresponding to the lower air outlet, and the first ventilation unit (230) and the second ventilation unit (250) together form the inspection port.

11. The heat exchange device according to claim 10, characterized in that: The duct machine body (100) is also provided with an air return port, and the air return port is arranged corresponding to the second ventilation unit (250).

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