Fresh air machine

Abstract

This application relates to the field of air conditioning technology and discloses a fresh air unit. The fresh air unit includes: a through-wall duct with a first end and a second end disposed opposite to each other; a fan disposed inside the through-wall duct; a heat exchange core disposed inside the through-wall duct; and a panel assembly disposed at the first end of the through-wall duct. The panel assembly includes an air outlet frame, a wall-mounted plate, and an electrical control module. The wall-mounted plate is disposed between the air outlet frame and the through-wall duct. The electrical control module has a positioning part, and the wall-mounted plate has a positioning mating part. The positioning part and the positioning mating part cooperate to install the electrical control module on the wall-mounted plate. The fan is connected to the electrical control module. The air outlet frame has a first air outlet communicating with the through-wall duct. Through the cooperation of the positioning part and the positioning mating part, the electrical control module is installed on the wall-mounted plate instead of the air outlet frame. This simplifies the maintenance process for components inside the air outlet frame and prevents damage to the electrical control module during maintenance, as it eliminates the need to disassemble the electrical control module when maintenance is required.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, specifically to a fresh air ventilator. Background Technology

[0002] Currently, fresh air systems are an effective air conditioning device that can expel stale indoor air to the outside and bring in fresh outdoor air, ensuring that the room is always filled with fresh air.

[0003] A single-hole heat exchanger is disclosed in the related technology, which includes a main unit, a metal mounting plate, an inner tube assembly and an outer tube assembly. The inner tube assembly is equipped with a reversible fan and a temperature sensor. The temperature sensor monitors the outdoor temperature and transmits it to the main unit through an electrical connection. The reversible fan receives electrical signals from the main unit and turns on and off. The main unit is equipped with a CO2 sensor and a Wi-Fi module.

[0004] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0005] The main unit is electrically connected to the temperature sensor and controls the operation of the forward and reverse fans, meaning the main unit contains an electronic control module. The main unit also contains a wax motor that drives the grille opening and closing. Repairing the wax motor requires access to the electronic control module within the main unit, complicating the repair process.

[0006] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0007] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0008] This disclosure provides a new type of air ventilator to solve the problem of complex maintenance processes for main units.

[0009] According to a first aspect of the present invention, a fresh air fan is provided, comprising: a through-wall pipe including a first end and a second end disposed opposite to each other; a fan disposed inside the through-wall pipe; a heat exchange core disposed inside the through-wall pipe; and a panel assembly disposed at the first end of the through-wall pipe. The panel assembly includes an air outlet frame, a wall-mounted plate, and an electrical control module. The wall-mounted plate is disposed between the air outlet frame and the through-wall pipe. The electrical control module has a positioning part, and the wall-mounted plate has a positioning mating part. The positioning part and the positioning mating part cooperate to install the electrical control module on the wall-mounted plate. The fan is connected to the electrical control module, and the air outlet frame has a first air outlet communicating with the through-wall pipe.

[0010] Optionally, the air outlet frame and the wall-mounted panel can be detachably connected.

[0011] Optionally, the fresh air unit also includes: a rain cap, located at the second end of the wall-penetrating pipe, the rain cap having a second air vent for connecting the outside to the wall-penetrating pipe; and a sealing element, including a sealing section, which is sleeved on the outside of the second end of the wall-penetrating pipe or on the outside of the rain cap for abutting against the outer wall surface of the mounting base.

[0012] Alternatively, the sealing section is inclined toward the axis of the through-wall pipe along the direction from the panel assembly to the rain cap.

[0013] Optionally, the seal further includes: a first connecting section, sleeved on the outside of the second end of the through-wall pipe or sleeved on the outside of the rain cap, and located on the side of the sealing section away from the rain cap; and a first shielding section, located on the outside of the first connecting section and extending circumferentially along the first connecting section.

[0014] Optionally, the seal further includes a second blocking section disposed on the side of the first blocking section away from the sealing section, the second blocking section having a flow port.

[0015] Optionally, the seal may further include a second connecting section connected to the sealing section and located between the rain cap and the through-wall pipe.

[0016] Optionally, the fresh air unit also includes: an inner pipe, which is located inside the wall-penetrating pipe, and the fan and heat exchange core are both located inside the inner pipe; the inner pipe includes a first pipe section and a second pipe section, which are arranged sequentially along the axial direction of the inner pipe, and the first pipe section and the second pipe section are detachably connected.

[0017] Optionally, the fresh air unit also includes an environmental parameter sensor, located at the second end of the through-wall pipe and connected to the electrical control module, for detecting environmental parameters.

[0018] Optionally, the fresh air unit may also include: a first filter element located inside the wall-penetrating pipe and disposed between the rain cap and the heat exchange core; and / or a second filter element located inside the wall-penetrating pipe and disposed between the heat exchange core and the panel assembly.

[0019] The fresh air system provided in this disclosure can achieve the following technical effects:

[0020] With the cooperation of the positioning part and the positioning mating part, the electronic control module is installed on the wall panel instead of the air outlet frame. This way, when the components inside the air outlet frame need maintenance, it is not necessary to disassemble the electronic control module, which simplifies the maintenance process of the components inside the air outlet frame and prevents damage to the electronic control module due to maintenance.

[0021] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0022] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0023] Figure 1 This is an exploded view of a panel assembly provided in an embodiment of this disclosure;

[0024] Figure 2 This is a schematic diagram of a panel assembly provided in an embodiment of the present disclosure, wherein the damper is in the closed position;

[0025] Figure 3 This is a schematic diagram of the structure of a front shell provided in an embodiment of this disclosure;

[0026] Figure 4 This is a schematic diagram of a rear shell provided in an embodiment of this disclosure;

[0027] Figure 5 This is a schematic diagram of another rear shell provided in an embodiment of this disclosure;

[0028] Figure 6 This is a partial schematic diagram of a panel assembly provided in an embodiment of this disclosure;

[0029] Figure 7 This is a partial structural schematic diagram of another panel assembly provided in an embodiment of this disclosure;

[0030] Figure 8 This is a schematic diagram of an assembly structure of a first rack, a second rack, a bracket, and a damper provided in an embodiment of this disclosure;

[0031] Figure 9 yes Figure 8 Enlarged structural diagram of section A in the middle;

[0032] Figure 10 This is a schematic diagram of an assembly structure of a bracket and a damper provided in an embodiment of this disclosure;

[0033] Figure 11 yes Figure 10 Enlarged structural diagram of section B in the middle;

[0034] Figure 12 This is a schematic diagram of the structure of a first rack provided in an embodiment of this disclosure;

[0035] Figure 13 This is a schematic diagram of the assembly structure of a second rack and a second drive box provided in an embodiment of this disclosure;

[0036] Figure 14This is a schematic diagram of the structure of a second drive box provided in an embodiment of this disclosure;

[0037] Figure 15 This is a partial structural schematic diagram of a driving device provided in an embodiment of this disclosure;

[0038] Figure 16 This is a partial structural diagram of a panel assembly provided in an embodiment of the present disclosure, wherein the damper is in the open state;

[0039] Figure 17 This is a partial structural schematic diagram of a panel assembly provided in an embodiment of this disclosure;

[0040] Figure 18 yes Figure 17 Enlarged structural diagram of section F in the middle;

[0041] Figure 19 This is an exploded schematic diagram of a fresh air unit provided in an embodiment of this disclosure;

[0042] Figure 20 This is a cross-sectional view of a fresh air unit provided in an embodiment of this disclosure;

[0043] Figure 21 This is an exploded schematic diagram of another fresh air unit provided in this embodiment of the disclosure;

[0044] Figure 22 This is an exploded schematic diagram of another fresh air unit provided in this embodiment of the disclosure;

[0045] Figure 23 This is an exploded view of a partial structure of a fresh air unit provided in an embodiment of this disclosure;

[0046] Figure 24 This is a schematic diagram of the structure of a sealing element provided in an embodiment of this disclosure;

[0047] Figure 25 This is a partial cross-sectional view of a fresh air unit provided in an embodiment of this disclosure.

[0048] Figure label:

[0049] 10: Drive unit; 101: First gear; 103: Second gear; 104: Second shaft hole;

[0050] 30: First drive box; 305: First limiting part; 306: First limiting buckle; 310: Third limiting part; 311: Third limiting wall; 313: Connecting structure; 314: Lug;

[0051] 40: Second drive box; 401: Second box body; 405: Second limiting part; 406: Second limiting buckle; 407: Second limiting wall; 408: Second receiving space; 409: Second guide rib;

[0052] 501: First rack; 502: First limiting mating part; 503: First limiting groove; 504: First guide groove; 505: First limiting rib; 506: Third limiting rib;

[0053] 601: Second rack; 605: Second limiting rib;

[0054] 701: Bracket; 702: Second limiting groove; 705: Second elastic buckle; 706: Drive shaft; 707: Drive component; 708: First limiting groove; 709: First elastic buckle;

[0055] 80: Rear shell; 801: Protrusion; 803: Connecting and mating structure; 804: Fourth limiting wall; 805: Fourth receiving space; 806: First shell segment; 807: Mounting groove; 808: Second shell segment; 809: First communicating hole; 810: Second screw post; 811: Second hook; 813: First magnetic attraction element; 814: First wire hole; 815: Second wire hole;

[0056] 90: Front housing; 901: First screw post; 902: First catch hook;

[0057] 910: Air cavity; 911: Wall mounting plate; 914: Electrical control module; 915: Display module; 920: First air outlet; 921: Air damper; 922: Second connecting hole; 923: Air outlet frame;

[0058] 20: Seal; 201: Sealing section; 202: First connecting section; 203: First shielding section; 204: Second shielding section; 205: Second connecting section; 211: Through-wall pipe; 212: Inner pipe; 213: First pipe section; 214: Second pipe section; 215: Heat exchange core; 216: Fan; 217: First filter element; 218: Second filter element; 219: Third filter element; 220: Rain cap; 221: Second air outlet; 222: Panel assembly; 223: Flow port; 224: First end; 225: Second end. Detailed Implementation

[0059] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0060] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0061] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0062] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0063] Unless otherwise stated, the term "multiple" means two or more.

[0064] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0065] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0066] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0067] like Figures 1 to 18 As shown, this embodiment of the present disclosure provides a panel assembly 222 for a fresh air unit. The panel assembly 222 includes an air outlet frame 923 and an air damper 921. The air outlet frame defines an air cavity 910 having a first air vent 920 located on the side of the air outlet frame, and the air outlet frame has a first communication hole 809 connecting the air cavity 910 to the outside. The air damper 921 covers the first air vent 920 and is configured to move in a direction close to or away from the first air vent 920 to open or close the first air vent 920.

[0068] The damper 921 moves towards or away from the first air vent 920. When the damper 921 approaches the first air vent 920, it closes the vent; when it moves away, it opens the vent, allowing the fresh air unit to operate normally. Figure 1 In the middle, the damper closes the first air vent; as Figures 16 to 18 In the middle, the damper opens the first air vent.

[0069] The first air vent 920 is located on the side of the air outlet frame. Compared with the front of the air outlet frame, the side has less impact on the overall appearance of the machine. Therefore, there is no need to install a decorative panel to cover the first air vent 920, thereby avoiding the problems of increased machine thickness caused by the decorative panel and easy dust accumulation between the decorative panel and the damper 921.

[0070] Optionally, such as Figure 16 As shown, there are multiple first air vents 920, which are arranged circumferentially along the side of the air outlet frame. The number of dampers 921 is equal to the number of first air vents 920 and corresponds one-to-one.

[0071] Multiple primary air vents 920 are arranged circumferentially along the side of the air outlet frame, enabling the fresh air unit to output air from multiple directions, avoiding direct airflow and improving the user experience.

[0072] Multiple first air vents 920 are respectively located on opposite sides of the air outlet frame, and the number of air dampers 921 is equal to the number of first air vents 920 and corresponds one-to-one.

[0073] By setting multiple first air vents 920 and assigning each first air vent 920 a corresponding damper 921, multiple first air vents 920 can be controlled independently, thereby flexibly adjusting the opening and closing of each first air vent 920 to ensure that the fresh air handling capacity meets user requirements.

[0074] Of course, multiple dampers 921 can also be controlled synchronously, that is, multiple dampers 921 open and close synchronously.

[0075] Multiple first air vents 920 are respectively located on opposite sides of the air outlet frame, for example, Figure 16 As shown, there are two first air vents 920, which are respectively located on the left and right sides of the air outlet frame. Alternatively, there are two first air vents 920, which are respectively located on the upper and lower sides of the air outlet frame. Or, there are four first air vents 920, which are respectively located on the left, right, upper, and lower sides of the air outlet frame.

[0076] Optionally, such as Figure 1 As shown, the air outlet frame includes a front shell 90 and a rear shell 80 disposed opposite to each other. The front shell 90 and the rear shell 80 respectively form at least a portion of the front wall surface and at least a portion of the rear wall surface of the air outlet frame. A first connecting hole 809 is provided in the rear shell 80.

[0077] The front shell 90 and the rear shell 80 are arranged sequentially from front to back. By designing the air outlet frame to include the front shell 90 and the rear shell 80, not only is a ventilation cavity 910 formed, but a first connecting hole 809 is also provided on the rear shell 80 for connecting the ventilation cavity 910 to the outside. This split design facilitates the assembly and maintenance of the air outlet frame, and the cooperation between the front shell 90 and the rear shell 80 enhances the overall structural strength of the air outlet frame and improves the durability of the product.

[0078] Optionally, such as Figure 1 and Figure 16 As shown, the rear shell 80 includes a first shell section 806 and a second shell section 808. The first shell section 806 defines a mounting groove 807 for mounting the electronic control module 914. The second shell section 808 and the front shell 90 together enclose an air outlet cavity 910. A first connecting hole 809 is provided in the second shell section 808. The first air outlet 920 includes a first sub-outlet 9201 and a second sub-outlet 9202 that are connected. The first sub-outlet corresponds to the first shell section 806, and the second sub-outlet corresponds to the second shell section 808.

[0079] The rear shell 80 includes a first shell section 806 and a second shell section 808 arranged in the vertical direction. The first air outlet 920 includes a first sub-outlet and a second sub-outlet arranged in the vertical direction. That is, the first air outlet 920 is still provided at the first shell section 806 where the electronic control module 914 is located, which increases the air outlet area of ​​the first air outlet 920, thereby increasing the air volume of the fresh air unit.

[0080] like Figure 4As shown, the rear cover 80 is provided with a first wiring hole 814, through which the wiring of the drive device 10 passes to connect with the electronic control module 914; the rear cover 80 is also provided with a second wiring hole 815, through which the wiring of the fan 216 passes to connect with the electronic control module 914.

[0081] Optionally, the front shell 90 and the rear shell 80 are detachably connected.

[0082] The front shell 90 and rear shell 80 are detachably connected, making it easy for users to maintain and clean the air outlet frame. This design not only improves the maintainability of the product but also reduces maintenance costs and extends the product's lifespan.

[0083] Optionally, such as Figure 3 and Figure 4 As shown, the front housing 90 is provided with a first screw post 901, and the rear housing 80 is provided with a second screw post 810. The screw passes through the first screw post 901 and the second screw post 810 to connect the front housing 90 and the rear housing 80; and / or the front housing 90 and the rear housing 80 are engaged; and / or the front housing 90 and the rear housing 80 are hooked together.

[0084] A first screw post 901 is provided on the surface of the front housing 90 facing the rear housing 80 (the rear surface of the front housing 90), and a second screw post 810 is provided on the surface of the rear housing 80 facing the front housing 90 (the front surface of the rear housing 80). The first screw post 901 and the second screw post 810 are located within the air cavity 910. The first screw post 901 and the second screw post 810 can shorten the distance between the front housing 90 and the rear housing 80, making it easier for screws to pass through the first screw post 901 and the second screw post 810, thereby realizing the connection between the front housing 90 and the rear housing 80.

[0085] One of the front shell 90 and the rear shell 80 is provided with a first hook 902 and the other is provided with a second hook 811. The first hook 902 and the second hook 811 are hooked together. Alternatively, one of the front shell 90 and the rear shell 80 is provided with a first buckle and the other is provided with a first slot. The first buckle and the first slot are hooked together.

[0086] Optionally, such as Figure 6 As shown, the panel assembly 222 also includes a drive device 10, which is drivenly connected to the damper 921 and is used to drive the damper 921 to perform linear telescopic movement in the direction of approaching or moving away from the first air outlet 920.

[0087] The straight line is roughly perpendicular to the plane where the first air vent 920 is located.

[0088] When the damper 921 extends in a straight line away from the first air vent 920, the air blown out of the first air vent 920 is blown out through the gap between the damper 921 and the first air vent 920. The damper 921 can then act as a guide, eliminating the need for a decorative panel for air guidance. When the damper 921 retracts in a straight line towards the first air vent 920, the damper 921 closes the first air vent 920, preventing dust and other contaminants from entering the first air vent 920.

[0089] Optionally, the drive unit 10 includes a drive member 706 and a telescopic rod driven by the drive member 706 to extend and retract. The telescopic rod is connected to the damper 921, for example, by a fixed connection. The drive unit 10 can be a linear telescopic motor, an electric telescopic rod, or an electromagnetic telescopic rod, etc.

[0090] like Figure 6 As shown, the drive device 10 includes a drive member 706, a gear set, a first rack 501, and a second rack 601. The gear set includes a first gear 101, a second gear 103, and a transmission shaft 705 connecting the first gear 101 and the second gear 103. The drive member 706 is driven to one of the first gear 101 and the second gear 103 to drive the rotation of the first gear 101 and the second gear 103, and drives the other of the first gear 101 and the second gear 103 to rotate via the transmission shaft 705. The first rack 501 and the second rack 601 are both connected to the damper 921. The first rack 501 meshes with the first gear 101, and the second rack 601 meshes with the second gear 103. The first gear 101 drives the first rack 501 to move, and the second gear 103 drives the second rack 601 to move, thereby driving the damper 921 to perform telescopic movement.

[0091] Optionally, such as Figure 6 As shown, there are multiple first air vents 920, and the number of drive devices 10 is equal to the number of first air vents 920 and corresponds one-to-one. Among the multiple drive devices 10, at least two drive devices 10 move synchronously or independently.

[0092] By setting up multiple drive units 10, with each drive unit 10 corresponding to a first air outlet 920, independent control of multiple first air outlets 920 is achieved. Simultaneously, at least two drive units 10 can move synchronously or independently, further improving the ventilation flexibility and efficiency of the fresh air unit. This design allows for flexible adjustment of the opening degree of each first air outlet 920 according to the ventilation needs of different areas, enhancing the user experience.

[0093] At least two of the multiple drive devices 10 move synchronously, and the damper 921 controlled by the two drive devices 10 moves synchronously, including synchronous opening, synchronous closing, and having the same degree of opening when opening.

[0094] At least two of the multiple drive devices 10 move independently, and the dampers 921 controlled by the two drive devices 10 move independently, so that the opening and closing of the first air outlets 920 corresponding to the two dampers 921 and the air volume can be controlled respectively.

[0095] Taking the drive component 706 as an example, each drive device 10 includes one motor. The drive component 706 is electrically connected to the electronic control module 914, and the electronic control module 914 controls the operation of the drive component 706. Taking the synchronous or independent movement of two drive devices 10 as an example, the motors of the two drive devices 10 are the first motor and the second motor, respectively.

[0096] When the two drive devices 10 move synchronously, a common control signal can be used to control the first motor and the second motor simultaneously, making their actions completely synchronized. For example, when a command to open the damper 921 is received, the signal simultaneously triggers the first motor and the second motor, driving both dampers 921 to open simultaneously; when a command to close the damper 921 is received, the two motors (the first motor and the second motor) are similarly controlled to close the damper 921 simultaneously.

[0097] When the two drive units 10 move independently, independent control signals are set for the first motor and the second motor respectively. This allows for individual control of the opening and closing of the first damper 921 or the second damper 921 according to actual needs. For example, when the first damper 921 needs to be opened alone, only the first motor is sent an open signal, while the second motor remains stationary; when the second damper 921 needs to be closed, only the second motor is sent a close signal, while the first motor is unaffected.

[0098] This disclosure also provides a fresh air unit, including a panel assembly 222 as described in any of the above embodiments and a through-wall pipe 211. The through-wall pipe 211 includes a first end and a second end disposed opposite to each other. A first connecting hole 809 is connected to the first end of the through-wall pipe 211, and the second end of the through-wall pipe 211 is connected to the outside.

[0099] The fresh air unit also includes a rain cap 220, which is located at the second end of the wall-penetrating pipe 211. The rain cap 220 has a second air outlet 221. The panel assembly 222 is located indoors. The mounting base has a through hole, through the wall-penetrating pipe 211 passes through the through hole, and the rain cap 220 is located outdoors.

[0100] The fresh air system also includes a fan 216 and a heat exchange core 215, both of which are housed within a through-wall duct 211. When the fan 216 rotates forward, outdoor air enters the through-wall duct 211 through the second air inlet 221, exchanges heat with the heat exchange core 215, then enters the air chamber 910 through a connecting hole, and is blown into the room through the first air inlet 920, thus achieving fresh air intake. When the fan 216 rotates in reverse, indoor air enters the air chamber 910 through the first air inlet 920, then enters the through-wall duct 211 through the first connecting hole 809, exchanges heat with the heat exchange core 215, and is blown into the room through the second air inlet 221, thus achieving exhaust from the room.

[0101] The fresh air unit provided in this embodiment includes the panel assembly 222 as described in any of the above embodiments, and therefore has all the beneficial effects of the panel assembly 222 as described in any of the above embodiments, which will not be repeated here.

[0102] Optionally, such as Figure 1 As shown, panel assembly 222 includes an air outlet frame and a wall mount panel 911.

[0103] The air outlet frame includes a front shell 90 and a rear shell 80. The air outlet frame defines an air cavity 910 with a first air outlet 920. The rear shell 80 is provided with a first connecting hole 809 that communicates with the air cavity 910. The wall mounting plate 911 is located on the side of the rear shell 80 away from the front shell 90 and is detachably connected to the rear shell 80. The wall mounting plate 911 is provided with a second connecting hole 922 for connecting the first connecting hole 809 and the outside, and the wall mounting plate 911 is used to connect to the installation base of the fresh air unit.

[0104] The wall-mounted panel 911 is located on the side of the air outlet frame facing the installation base. The air outlet frame is connected to the wall-mounted panel 911, and the wall-mounted panel 911 is connected to the installation base, thereby achieving the fixed installation of the air outlet frame on the installation base.

[0105] The installation base is the platform for the fresh air unit, such as a wall or window.

[0106] The detachable connection between the rear shell 80 and the wall mounting plate 911 allows for separation of the rear shell 80 and the wall mounting plate 911 when maintenance or replacement is required, thereby enabling the disassembly of the air outlet frame and facilitating planetary maintenance and replacement of components inside the air outlet frame and air cavity 910.

[0107] Optionally, such as Figure 5 As shown, the back cover 80 and the wall mounting plate 911 are magnetically connected.

[0108] The back cover 80 and the wall panel 911 are connected by magnetic attraction. This connection method is not only easy to install, but also secure, and easy to disassemble and maintain.

[0109] The back cover 80 includes a first magnetic attraction member 813, and the wall panel 911 includes a second magnetic attraction member. The first magnetic attraction member 813 and the second magnetic attraction member attract each other magnetically to achieve a magnetic connection between the back cover 80 and the wall panel 911.

[0110] One of the first magnetic attractors 813 includes a magnet, and the other includes a magnet or a magnetic metal such as iron, cobalt, or nickel.

[0111] In addition to magnetic connection, the back cover 80 and the wall mounting plate 911 can also be connected by screws or snap-fit, etc.

[0112] Optionally, the back cover 80 is attached to the wall panel 911.

[0113] The design of the back cover 80 fitting snugly against the wall panel 911 ensures a tight connection between the two, reduces the possibility of air leakage between the first connecting hole 809 and the second connecting hole 922, and improves ventilation efficiency.

[0114] The rear shell 80 has a first abutting rib on its surface facing the wall panel 911 (the rear surface of the rear shell 80). The first abutting rib abuts against the wall panel 911. The first abutting rib is located outside the first connecting hole 809 and the second connecting hole 922, and is arranged circumferentially around the first connecting hole 809 and the second connecting hole 922 to achieve a close fit between the rear shell 80 and the wall panel 911, reducing air leakage when air flows between the first connecting hole 809 and the second connecting hole 922. The direction closer to the axis of the first connecting hole 809 is considered inward, and the direction away from the axis of the first connecting hole 809 is considered outward; and / or Alternatively, the surface of the wall panel 911 facing the rear shell 80 (the front surface of the wall panel 911) is provided with a second abutting rib, which abuts against the rear shell 80. The first abutting rib is located outside the first connecting hole 809 and the second connecting hole 922 and is arranged circumferentially around the first connecting hole 809 and the second connecting hole 922 to achieve a close fit between the rear shell 80 and the wall panel 911 and reduce air leakage when flowing between the first connecting hole 809 and the second connecting hole 922. The direction closer to the axis of the first connecting hole 809 is inward, and the direction away from the axis of the first connecting hole 809 is outward.

[0115] Optionally, such as Figure 1 As shown, the panel assembly 222 also includes an electrical control module 914, which is located between the rear shell 80 and the wall mounting plate 911.

[0116] The electronic control module 914 is positioned at the rear, specifically between the rear shell 80 and the wall mounting plate 911. This allows the air outlet frame to be removed from the wall mounting plate 911 during maintenance without involving the electronic control module 914, further simplifying the disassembly process.

[0117] Optionally, the rear cover 80 is configured with a mounting slot 807 adapted to the electronic control module 914, and the electronic control module 914 is disposed in the mounting slot 807.

[0118] The electrical control module 914 is confined within the mounting slot 807, which can limit the electrical control module 914. The electrical control module 914 can also limit the rear shell 80, thereby preventing the air outlet frame from separating from the wall mounting plate 911.

[0119] like Figure 5 As shown, the opening of the mounting groove 807 faces the wall panel 911. The shape and size of the mounting groove 807 are compatible with the shape and size of the electronic control module 914, so that the rear shell 80 can be limited from four directions: up, down, left, and right.

[0120] The electrical control module 914 is located in the mounting slot 807, which is located in the first shell section 806. The mounting slot 807 can protect the electrical control module 914 and prevent the air flowing in the fresh air unit from passing through the electrical control module 914, thereby preventing condensation from forming on the surface of the electrical control module 914.

[0121] Optionally, the electronic control module 914 is provided with a positioning part, and the wall-mounted plate 911 is provided with a positioning mating part. The positioning part and the positioning mating part cooperate to install the electronic control module 914 on the wall-mounted plate 911.

[0122] The electronic control module 914 is installed on the wall mounting plate 911 and may not be connected to the rear housing 80. In this case, when disassembling the air outlet frame, the connection between the electronic control module 914 and the rear housing 80 needs to be severed. Alternatively, a connection may be maintained between the electronic control module 914 and the rear housing 80, further enhancing the stability of their relative positions. This allows for maintenance of components within the air outlet frame, such as the drive unit, without requiring disassembly of the electronic control module, thus simplifying the maintenance process.

[0123] The positioning part and the positioning mating part are fixedly connected, but can also be detachable or non-detachable. For example, the positioning part and the positioning mating part can be magnetically connected, or connected by snap-fit ​​or screws, etc.

[0124] Optionally, such as Figure 1 As shown, the panel assembly 222 also includes a display module 915, which is located between the front shell 90 and the rear shell 80, for example, between the first shell segment 806 and the front shell 90, so that the display information of the display module 915 can be presented through the front shell 90.

[0125] The display module 915 is used to display the parameters of the fresh air unit and / or the parameters set by the user, such as the current temperature and the target temperature set by the user. The display module 915 includes a first housing, a second housing, and a display panel. The display panel is located within the space defined by the first housing and the second housing, and the first housing is located on the front side of the second housing.

[0126] The front cover 90 is designed to be hidden or visible, so that the information displayed by the display module 915 can be seen through the front cover 90. Hidden or visible processing is a design technique that uses special materials, structures, or processes to make the front cover 90 appear hidden when the information of the display module 915 is not displayed, but can clearly display the information when it is needed.

[0127] Concealment and visibility can be achieved through material selection, structural design, or process technology.

[0128] In terms of material selection, transparent or semi-transparent materials are used to make the front shell 90, or a special coating is applied to the surface of the front shell 90 so that it appears to be hidden when not in display.

[0129] In terms of structural design, a display module 915 is set on the rear side of the front shell 90, and the display content is guided to the panel surface through special structural design (such as light guide plate, reflector, etc.).

[0130] In terms of manufacturing technology, advanced display technologies such as OLED and LCD are used. These technologies can completely turn off the pixels when not in use, making the front cover appear to be hidden.

[0131] This disclosure also provides a fresh air unit, including a panel assembly 222, a wall-penetrating pipe 211, and a fan 216 as described in any of the above embodiments. One end of the wall-penetrating pipe 211 is connected to a second connecting hole 922, and the other end of the wall-penetrating pipe 211 is connected to the outside. The fan 216 is disposed inside the wall-penetrating pipe 211.

[0132] The fresh air unit provided in this disclosure includes the panel assembly 222 as described in any of the above embodiments, and therefore has all the beneficial effects of the panel assembly 222 as described in any of the above embodiments, which will not be repeated here.

[0133] Combination Figure 6-13 As shown, this disclosure provides a damper assembly, including a gear set, a drive unit 706, a damper 921, a first rack 501, and a second rack 601.

[0134] The gear set includes a first gear 101, a second gear 103, and a drive shaft 705 connected between the first gear 101 and the second gear 103. The gear set rotates in a controlled manner.

[0135] One of the first gear 101 and the second gear 103 is driven to rotate by the drive member 706, and drives the other of the first gear 101 and the second gear 103 to rotate via the transmission shaft 705.

[0136] The first gear 101 and the second gear 103 are connected by a drive shaft 705, so that the rotation of the first gear 101 can drive the rotation of the second gear 103, or the rotation of the second gear 103 can drive the rotation of the first gear 101. In this way, the first gear 101 and the second gear 103 can share a single drive unit 706 for driving, eliminating the need to set separate drive units 706 for the first gear 101 and the second gear 103, thereby reducing the number of drive units 706 and lowering the cost of the product.

[0137] Both the first rack 501 and the second rack 601 are connected to the damper 921. The first rack 501 meshes with the first gear 101, so that the first gear 101 drives the first rack 501 to move. The second rack 601 meshes with the second gear 103, so that the second gear 103 drives the second rack 601 to move, thereby driving the damper 921 to perform telescopic movement.

[0138] Setting the first rack 501 and the second rack 601 to jointly drive the damper 921 can increase the driving force on the damper 921 and make the overall movement of the damper 921 more stable. This eliminates the need for multiple sets of drive devices 10 as in related technologies, further reducing the cost of the product.

[0139] Optionally, the drive shaft 705 includes a first end, the cross-section of which is non-circular, and the gear shaft of the first gear 101 is provided with a first shaft hole, the cross-section of which is non-circular and is adapted to the first end, and the first end is inserted into the first shaft hole.

[0140] The non-circular cross-section of the first end is designed to match the first shaft hole, ensuring a reliable connection between the first gear 101 and the first end. This improves the stability and accuracy of the transmission between the first gear 101 and the transmission shaft 705, ensuring that the rotation of the first gear 101 can be transmitted to the second gear 103 through the transmission shaft 705 or that the rotation of the second gear 103 can be transmitted to the first gear 101 through the transmission shaft 705.

[0141] The rotation axis of the first gear 101, the axis of the gear shaft of the first gear 101, and the axis of the first shaft hole coincide.

[0142] The transmission shaft 705 includes a second end, the cross-section of which is non-circular. The gear shaft of the second gear 103 is provided with a second shaft hole 104, the cross-section of which is non-circular and is adapted to the second end. The second end is inserted into the second shaft hole 104.

[0143] The non-circular cross-section of the second end is adapted to the second shaft hole 104, ensuring a reliable connection between the second gear 103 and the second end, improving the stability and accuracy of the transmission between the second gear 103 and the transmission shaft 705, and ensuring that the rotation of the first gear 101 can be transmitted to the second gear 103 through the transmission shaft 705 or the rotation of the second gear 103 can be transmitted to the first gear 101 through the transmission shaft 705.

[0144] The rotation axis of the second gear 103, the axis of the gear shaft of the second gear 103, and the axis of the second shaft hole 104 coincide.

[0145] The first end and the second end are the two ends of the transmission shaft 705 along its length, respectively.

[0146] Optionally, the first rack 501 and the second rack 601 are along the length direction of the damper 921 (e.g., Figure 16 Set them sequentially in the top and bottom directions.

[0147] The first rack 501 and the second rack 601 are arranged sequentially along the length of the damper 921, making the movement of the damper 921 more stable at all points along its length, avoiding deviation and jamming during movement, and improving the overall structural stability of the damper assembly.

[0148] like Figure 13 As shown, the first gear 101 and the second gear 103 have the same radius, and the first rack 501 and the second rack 601 are both straight racks, so that the damper 921 can perform linear extension and retraction movements.

[0149] Since the first gear 101 and the second gear 103 have the same radius, their rotational speed and torque transmission are consistent, ensuring that the movement speed and stroke of the damper 921 are completely synchronized, thus guaranteeing the smoothness and consistency of the damper 921's opening and closing. The linear design of the first rack 501 and the second rack 601 further ensures that the damper 921 performs linear telescopic movements.

[0150] Both the first gear 101 and the second gear 103 are cylindrical gears.

[0151] Optionally, such as Figure 6 As shown, the damper assembly also includes a first drive box 30 and / or a second drive box 40.

[0152] The first gear 101 is located inside the first drive box 30. One end of the first rack 501 is connected to the damper 921, and the other end of the first rack 501 is inserted into the first drive box 30.

[0153] The first drive box 30 provides a stable mounting space for the first gear 101 and the first rack 501, enhancing the rigidity and stability of the structure, while facilitating assembly and maintenance.

[0154] The first drive box 30 includes a first box body and a first box cover. The first box body is disposed on the first box cover, and together they define an installation space for installing the first gear 101 and the first rack 501. The first box body has a first through hole, and the first box cover has a second through hole. The two ends of the gear shaft of the first gear 101 pass through the first through hole and the second through hole respectively, and can rotate relative to the first through hole and the second through hole respectively, so as to realize the installation of the first gear 101 in the first drive box 30 without affecting the rotation of the first gear 101. The first shaft hole is disposed at one end of the gear shaft of the first gear 101.

[0155] The first housing and the first cover are detachably connected, for example by screws or snap-fit, to facilitate the installation, removal and maintenance of the first gear 101.

[0156] The second gear 103 is located inside the second drive box 40. One end of the second rack 601 is connected to the damper 921, and the other end of the second rack 601 is inserted into the second drive box 40.

[0157] The second drive box 40 provides a stable mounting space for the second gear 103 and the second rack 601, enhancing the rigidity and stability of the structure while facilitating assembly and maintenance.

[0158] The second drive box 40 includes a second box body 401 and a second box cover. The second box body 401 is fitted onto the second box cover, together defining an installation space for mounting the second gear 103 and the second rack 601. The second box body 401 has a third through hole, and the second box cover has a fourth through hole. The two ends of the gear shaft of the second gear 103 pass through the third through hole and the fourth through hole respectively, and can rotate relative to the third through hole and the fourth through hole respectively, so as to realize the installation of the second gear 103 in the second drive box 40 without affecting the rotation of the second gear 103. The second shaft hole 104 is provided at one end of the gear shaft of the second gear 103.

[0159] The second housing 401 and the second housing cover are detachably connected, for example by screws or snap-fit, to facilitate the installation, removal and maintenance of the second gear 103.

[0160] Optionally, such as Figure 14 , Figure 17 and Figure 18 As shown, the first drive box 30 is provided with a first limiting part 305, and the first rack 501 is provided with a first limiting engagement part 502 that cooperates with the first limiting part 305 to prevent the first rack 501 from coming out of the first drive box 30.

[0161] When the damper 921 is opened to its maximum position, the first limiting part 305 engages with the first limiting cooperating part 502 to prevent the first rack 501 from dislodging from the first drive box 30.

[0162] One of the first limiting part 305 and the first limiting mating part 502 includes a first limiting buckle 306, and the other includes a first limiting groove 503. The first limiting buckle 306 is located in the first limiting groove 503 and can move relative to the first limiting groove 503. Before the damper 921 is opened to the maximum position, as the damper 921 is opened, the first limiting mating part 502 moves with the first rack 501. When the damper 921 is opened to the maximum position, the first limiting buckle 306 abuts against the first limiting groove 503 to restrict the first rack 501 from continuing to move in the opening direction of the damper 921.

[0163] Alternatively, one of the first limiting part 305 and the first limiting mating part 502 includes a first limiting block and the other includes a second limiting block. Before the damper 921 is opened to the maximum position, the first limiting block and the second limiting block do not abut each other, which does not affect the extension of the first rack 501. When the damper 921 is opened to the maximum position, the first limiting block abuts against the second limiting block to restrict the first rack 501 from continuing to move in the opening direction of the damper 921.

[0164] The first housing contains multiple first limiting walls, which are arranged opposite to each other to jointly define a first receiving space. A first rack 501 is located within the first receiving space and abuts against the first limiting walls. The first limiting walls extend along the extension direction (length direction) of the first rack 501 to restrict the first rack 501 from moving in a straight line. A first limiting part 305 is provided on the first limiting wall.

[0165] A first guide rib is provided in one of the first receiving space and the first rack 501, and a first guide groove 504 is provided in the other. The first guide rib and / or the first guide groove 504 extend along the length direction of the first rack 501. The first guide rib is located in the first guide groove 504 and is adapted to the first guide groove 504. The first guide rib can move relative to the first guide groove 504 to guide the first rack 501 to make linear movements.

[0166] The second drive box 40 is provided with a second limiting part 405, and the second rack 601 is provided with a second limiting engagement part that cooperates with the second limiting part 405 to prevent the second rack 601 from coming out of the second drive box 40.

[0167] When the damper 921 is opened to its maximum position, the second limiting part 405 engages with the second limiting mating part to prevent the second rack 601 from dislodging from the second drive box 40.

[0168] One of the second limiting part 405 and the second limiting mating part includes a second limiting buckle 406, and the other includes a second limiting groove. The second limiting buckle 406 is located in the second limiting groove and can move relative to the second limiting groove. Before the damper 921 is opened to the maximum position, as the damper 921 is opened, the second limiting mating part moves with the second rack 601. When the damper 921 is opened to the maximum position, the second limiting buckle 406 abuts against the second limiting groove to restrict the second rack 601 from continuing to move in the opening direction of the damper 921.

[0169] Alternatively, one of the second limiting part 405 and the second limiting mating part includes a third limiting block and the other includes a fourth limiting block. Before the damper 921 is opened to the maximum position, the third limiting block and the fourth limiting block do not abut each other and do not affect the extension of the second rack 601. When the damper 921 is opened to the maximum position, the third limiting block abuts against the fourth limiting block to restrict the second rack 601 from continuing to move in the opening direction of the damper 921.

[0170] The second housing 401 is provided with a plurality of second limiting walls 407, which are arranged opposite to each other to jointly define a second receiving space 408. The second rack 601 is located within the second receiving space 408 and abuts against the second limiting walls 407. The second limiting walls 407 extend along the extension direction (length direction) of the second rack 601 to restrict the second rack 601 from moving in a straight line. A second limiting part 405 is provided on the second limiting wall 407.

[0171] The second receiving space 408 and one of the second rack 601 are provided with a second guide rib 409, and the other is provided with a second guide groove. The second guide rib 409 and / or the second guide groove extend along the length direction of the second rack 601. The second guide rib 409 is located in the second guide groove and is adapted to the second guide groove. The second guide rib 409 can move relative to the second guide groove to guide the second rack 601 to make linear movements.

[0172] The first drive box 30 or the second drive box 40 is provided with a third limiting part 310, and the drive member 706 is provided with a third limiting engagement part. The third limiting part 310 and the third limiting engagement part cooperate to limit the drive member 706 and prevent the drive member 706 from shaking or shifting during operation.

[0173] Taking the driving component 706 as an example, which is driven by the first gear 101, and the first gear 101 drives the second gear 103 to rotate through the transmission shaft 705, the driving component 706 is fixedly installed in the first driving box 30. The first driving box 30 is provided with a third limiting part 310, and the driving component 706 is located on the outside of the first driving box 30 and on the side of the first driving box 30 away from the second driving box 40.

[0174] Both the third limiting part 310 and the third limiting mating part can be screw holes, and the two are connected by screws. And / or, the third limiting part 310 includes a third limiting wall 311, the third limiting wall 311 encloses a third receiving space, the third limiting mating part includes the outer wall surface of the driving member 706 (e.g., a motor), and the third limiting mating part is limited within the third receiving space.

[0175] Taking the stepper motor as an example, the motor shaft of the stepper motor is inserted into the third shaft hole of the gear shaft of the first gear 101 or the second gear 103 connected to it. The cross-section of the motor shaft is non-circular, for example, flat. The cross-section of the third shaft hole is also non-circular, which is compatible with the motor shaft. The motor shaft is inserted into the third shaft hole to drive the first gear 101 or the second gear 103 to rotate.

[0176] Optionally, such as Figures 8 to 11 As shown, the damper assembly also includes a bracket 701, which is located on the side of the damper 921 facing the gear set. The first rack 501 and the second rack 601 are both connected to the bracket 701. The bracket 701 is connected to the damper 921 to realize the connection between the first rack 501 and the damper 921 and the connection between the second rack 601 and the damper 921.

[0177] The bracket 701 increases the strength of the damper 921, thereby increasing the strength of the connection between the first rack 501 and the damper 921 and the connection between the second rack 601 and the damper 921.

[0178] The damper 921 and the bracket 701 are fixedly connected, for example by snap-fit ​​or screw connection.

[0179] Optionally, such as Figures 8 to 11 As shown, one of the bracket 701 and the first rack 501 is provided with a first limiting rib 505, and the other is provided with a first limiting groove 503. The first limiting rib 505 is limited within the first limiting groove 707 to fix the first rack 501 on the bracket 701.

[0180] Optionally, the damper assembly further includes a first elastic buckle 708, one end of which is connected to the bracket 701, and the other end forms a free end. The free end of the first elastic buckle 708 abuts against the first rack 501 and is located on the side of the first rack 501 away from the first gear 101.

[0181] Both the first elastic buckle 708 and the first limiting rib 505 are located on the bracket 701 or both are located on the first rack 501. Taking the example where both the first elastic buckle 708 and the first limiting rib 505 are located on the bracket 701, the first elastic buckle 708 is located at the open end of the first limiting groove 707. When the first limiting rib 505 is inserted into the first limiting groove 707, the first limiting rib 505 presses the first elastic buckle 708 to insert into the first limiting groove 707. After the first limiting rib 505 is inserted into the first limiting groove 707, the first elastic buckle 708 returns to its original position, and the first rack 501 is limited between the first limiting groove 707 and the free end of the first elastic buckle 708. The first rack 501 includes a third limiting rib 506, which is located on the side of the first elastic buckle 708 facing the first gear 101 and abuts against the first elastic buckle 708 to limit the position of the first rack 501 relative to the bracket 701. The engagement of the first elastic buckle 708 and the first limiting groove 707 is used to restrict the movement of the first rack 501 along the direction of movement of the first rack 501 and along the length and width directions of the damper 921.

[0182] One of the bracket 701 and the second rack 601 is provided with a second limiting rib 605, and the other is provided with a second limiting groove 701. The second limiting rib 605 is limited within the second limiting groove 701 to fix the second rack 601 on the bracket 701.

[0183] The damper assembly also includes a second elastic buckle 702, one end of which is connected to the bracket 701, and the other end forms a free end. The free end of the second elastic buckle 702 abuts against the second rack 601 and is located on the side of the second rack 601 away from the second gear 103.

[0184] Both the second elastic buckle 702 and the second limiting rib 605 are located on the bracket 701 or both are located on the second rack 601. Taking the example where both the second elastic buckle 702 and the second limiting rib 605 are located on the bracket 701, the second elastic buckle 702 is located at the open end of the second limiting groove 701. When the second limiting rib 605 is inserted into the second limiting groove 701, the second limiting rib 605 presses the second elastic buckle 702 to insert it into the second limiting groove 701. After the second limiting rib 605 is inserted into the second limiting groove 701, the second elastic buckle 702 returns to its original position, and the second rack 601 is limited between the second limiting groove 701 and the free end of the second elastic buckle 702. The second rack 601 includes a fourth limiting rib, which is located on the side of the second elastic buckle 702 facing the second gear 103 and abuts against the second elastic buckle 702 to limit the position of the second rack 601 relative to the bracket 701. The second elastic buckle 702 and the second limiting groove 701 cooperate to restrict the movement of the second rack 601 along the direction of movement of the second rack 601 and along the length and width directions of the damper 921.

[0185] A second aspect of the present invention provides a new type of air blower, including an air outlet frame and a damper assembly as described in any of the above embodiments. The air outlet frame defines an air cavity 910 having a first air outlet 920. A damper 921 is disposed on the first air outlet 920 and the damper 921 extends and retracts relative to the air cavity 910 to open or close the first air outlet 920.

[0186] The new air blower provided in the second aspect of this utility model includes the damper assembly as described in any of the above embodiments, and therefore has all the beneficial effects of the damper assembly as described in any of the above embodiments, which will not be repeated here.

[0187] Optionally, such as Figure 4 and Figure 6 As shown, the air outlet frame includes a front shell 90 and a rear shell 80 arranged opposite to each other. The first air outlet 920 is located on the side of the air cavity 910. The first drive box 30 and / or the second drive box 40 are provided with a connecting structure 313. The rear shell 80 is provided with a connecting and mating structure 803. The connecting structure 313 and the connecting and mating structure 803 cooperate to fix the first drive box 30 / or the second drive box 40 on the rear shell 80.

[0188] The connecting structure 313 and the connecting mating structure 803 are connected by screws or snap-fit.

[0189] For example, the connecting structure 313 includes a lug 314 on the outer wall of the first drive box 30 and / or the second drive box 40, and the connecting mating structure 803 includes a protrusion 801 on the rear shell 80. The lug 314 is provided with a first screw hole, and the protrusion 801 is provided with a second screw hole. After the lug 314 is inserted into the second screw hole, the screw is inserted into the first screw hole and the second screw hole, thereby realizing the screw connection between the lug 314 and the protrusion 801.

[0190] One of the connecting structure 313 and the connecting mating structure 803 includes a fourth limiting wall 804, which defines a fourth receiving space 805. The other of the connecting structure 313 and the connecting mating structure 803 is located within the fourth receiving space 805. Figure 4 and Figure 6 As shown, the connection and mating structure 803 includes a fourth receiving space 805, and at least a portion of the outer surface of the first drive box 30 forms a connection structure 313, which is confined within the fourth receiving space 805.

[0191] The first rack 501 and the second rack 601 have the same structure. The bracket 701 has the same structure at the parts that mate with the first rack 501 and the second rack 601. The first drive box 30 and the second drive box 40 have roughly the same structure. The first gear 101 and the second gear 103 are roughly the same.

[0192] like Figures 19 to 25 As shown, the fresh air unit also includes a sealing element 20. Taking the rain cap 220 inserted into the inner side of the second end of the through-wall pipe 211 as an example, the sealing element 20 includes a sealing section 201, which is sleeved on the outer side of the second end of the through-wall pipe 211 and is used to abut against the outer wall surface of the mounting base.

[0193] like Figure 24 and Figure 25 As shown, the sealing section 201 is sleeved on the outside of the second end of the through-wall pipe 211, and is used to seal between the through-wall pipe 211 and the outer wall surface of the mounting base, preventing rainwater from flowing into the through-wall pipe 211 along the outer wall surface of the mounting base. Here, the outer wall surface of the mounting base refers to the wall surface of the mounting base located outdoors.

[0194] Optionally, along the direction from panel assembly 222 to rain cap 220, sealing section 201 is inclined toward the axis of through pipe 211.

[0195] When installing the fresh air unit, the rain cap 220 is placed on the through-wall pipe 211. The through-wall pipe 211, with the rain cap 220 connected to it, is pushed into the through hole of the mounting base from the indoor side. Since the sealing section 201 is inclined towards the axis of the through-wall pipe 211 along the direction from the panel assembly 222 to the rain cap 220, the sealing section 201 can move towards the axis of the through-wall pipe 211 when pushed into the through hole, so that the sealing section 201 does not affect the pushing of the through-wall pipe 211 and the rain cap 220 out of the indoor area. After the second end of the through-wall pipe 211 extends to the outdoors, the through-wall pipe 211 is pulled towards the indoor area. After the through hole is no longer restrictive, the sealing section 201 returns to its original position and adheres to the outer wall surface of the mounting base, thereby achieving the sealing function of the sealing section 201.

[0196] Optionally, the seal 20 may also include a first connecting section 202 and a second connecting section 205.

[0197] The first connecting section 202 is sleeved on the outside of the second end of the through-wall pipe 211 and is located on the side of the sealing section 201 away from the rain cap 220; the first shielding section 203 is located on the outside of the first connecting section 202 and extends circumferentially along the first connecting section 202.

[0198] After the through-wall pipe 211 is installed in the through hole, foam material is injected from the indoor side into the space between the through-wall pipe 211 and the through hole to seal the gap between the through-wall pipe 211 and the through hole. The first shielding section 203 can impede the flow of foam material and prevent it from flowing out to the outdoor side of the sealing section 201.

[0199] The first shielding section 203 is an annular shape extending circumferentially along the first connecting section 202. There are multiple first shielding sections 203, which are arranged sequentially along the length direction of the through-wall pipe 211 (i.e., the direction of the line connecting the first end and the second end).

[0200] The first blocking section 203 may not be annular. It may include multiple first sub-blocking sections arranged sequentially along the circumference of the first connecting section 202. Multiple first blocking sections 203 are arranged sequentially along the length of the through-wall pipe 211 (i.e., the line connecting the first end and the second end). The first sub-blocking sections of adjacent first blocking sections 203 are staggered to prevent the foamed material from flowing outdoors.

[0201] Optionally, the seal 20 further includes a second blocking section 204, which is located on the side of the first blocking section 203 away from the seal section 201, and the second blocking section 204 is provided with a flow port 223.

[0202] Along the length of the through-wall pipe 211, the second shielding section 204, the first shielding section 203, and the sealing section 201 are arranged in sequence.

[0203] The second shielding section 204 is provided with a flow port 223 that runs through the thickness direction of the second shielding section 204. In this way, when the foaming material passes through the second shielding section 204, it can flow to the first shielding section 203 through the flow port 223. The second shielding section 204 can slow down the flow of the foaming material. Together with the first shielding section 203, it can prevent the foaming material from flowing into the outside.

[0204] When the second end of the through-wall pipe 211 is inserted into the inside of the rain cap 220, the sealing section 201 is fitted onto the outside of the rain cap 220, and the first connecting section 202 is fitted onto the outside of the rain cap 220.

[0205] The seal 20 also includes a second connecting section 205, which is connected to the sealing section 201 and is located between the rain cap 220 and the through-wall pipe 211.

[0206] The second connecting section 205 is pressed between the rain cap 220 and the through-wall pipe 211 to enhance the sealing between the rain cap 220 and the through-wall pipe 211, and further prevent rainwater from entering the through-wall pipe 211.

[0207] The fresh air unit also includes an inner pipe 212, which is located inside the wall-penetrating pipe 211. The fan 216 and the heat exchange core 215 are both located inside the inner pipe 212.

[0208] The inner tube 212 includes a first tube segment 213 and a second tube segment 214, which are arranged sequentially along the axial direction of the inner tube 212. The first tube segment 213 and the second tube segment 214 are detachably connected.

[0209] The fan 216 is located in the first pipe section 213, and the heat exchange core 215 is located in the second pipe section 214. The connection between the first pipe section 213 and the second pipe section 214 can be a detachable connection method such as snap-fit ​​or screw connection.

[0210] The first pipe section 213 and the second pipe section 214 can be detachably connected, which facilitates the assembly and maintenance of the fan 216 and the heat exchange core 215.

[0211] Optionally, the fresh air unit also includes an environmental parameter sensor, which is located at the second end of the through-wall pipe 211 and is used to detect environmental parameters.

[0212] The environmental parameter sensor can be at least one of a temperature sensor, a humidity sensor, and an air quality sensor. The environmental parameter sensor is located at the second end of the through-wall pipe 211 and is used to detect outdoor environmental parameters. When the environmental parameter sensor is a temperature sensor, it detects the outdoor ambient temperature; when it is a humidity sensor, it detects the outdoor ambient humidity; and when it is an air quality sensor, it detects the outdoor air quality. This configuration allows the fresh air unit to adjust its operation according to the outdoor environmental parameters, enabling the fresh air unit to...

[0213] By transmitting the detected environmental parameters to the electronic control module, the fresh air unit can automatically adjust its operating mode based on these parameters, such as adjusting the wind speed and direction or switching the air supply and exhaust modes, thus achieving intelligent control and improving the performance and user experience of the fresh air unit.

[0214] Optionally, such as Figure 19 As shown, the fresh air unit also includes a first filter element 217 and / or a second filter element 218.

[0215] The first filter element 217 is located inside the wall-penetrating pipe 211 and is disposed between the rain cap 220 and the heat exchange core 215; the second filter element 218 is located inside the wall-penetrating pipe 211 and is disposed between the heat exchange core 215 and the panel assembly 222.

[0216] Along the direction from panel assembly 222 to rain cap 220, second filter 218, fan 216, heat exchanger and first filter 217 are arranged in sequence. First filter 217 and second filter 218 are used to filter the air flowing in through-wall pipe 211.

[0217] Optionally, the fresh air unit also includes a third filter element 219. The first filter element 217, the second filter element 218 and the third filter element 219 are all disposed inside the inner tube 212, and the third filter element 219, the second filter element 218 and the first filter element 217 are arranged sequentially along the direction from the panel assembly 222 to the rain cap 220.

[0218] The filtration levels of the first filter element 217, the second filter element 218, and the third filter element 219 can be the same or different. For example, the first filter element 217 and the second filter element 218 can have the same filtration level, while the third filter element 219 can have a higher filtration level than the first filter element 217 and the second filter element 218. The first filter element 217, the second filter element 218, and the third filter element 219 can be filter screens or foam inserts, etc.

[0219] In one specific embodiment, the installation process of the fresh air unit is as follows:

[0220] 1. Drill a φ180 through hole in the wall (installation base); 2. Cut a wall-penetrating pipe 211 to a suitable length for the wall, insert the pipe 211 into the through hole, and place a sloped foam wedge to tilt the PVC pipe downwards at 3°. The rain cap 220 can be installed from inside the wall along with the pipe 211. After extending the pipe 211 with the rain cap 220 outside the wall, pull it back until the sealing section 201 fits against the outer wall surface; 3. Attach the metal wall panel to the interior wall. The round hole on the wall panel must be parallel to the axis of the pipe 211 and parallel to the ground. To align the template with the horizontal line, it is recommended to use a level, then mark the fastening holes for installing the positioning pins, and drill the holes to a certain depth. After installing the positioning pins, fix the wall panel to the wall with the accessory screws; 4. Fix the electrical control module to the wall panel; 5. If... Figure 22 As shown, the heat exchange core 215 assembly is inserted into the through-wall pipe 211, and the wiring terminals of the fan 216, etc., are connected to the electrical control module. The heat exchange core 215 assembly includes the assembled heat exchange core 215, fan 216, first filter element 217, second filter element 218, and inner tube 212; 6. As shown Figure 21 As shown, connect the connection wire of the drive unit on the air outlet frame to the connection wire of the electronic control module, and then fix the air outlet frame to the wall mounting plate. A strong magnet is installed on the back of the rear cover, which will automatically attract the wall mounting plate; 7. Control the machine via remote control.

[0221] In one specific embodiment, the maintenance method for the fresh air unit includes:

[0222] 1. For example Figure 21 As shown, disconnect the wiring harness between the air outlet frame and the electronic control module, and remove the air outlet frame; 2. As shown Figure 22 As shown, disconnect the terminals of the fan 216 and the environmental parameter sensor, and remove the heat exchange core 215 assembly from the through-wall pipe 211; 3. As Figure 23 As shown, the first filter element 217 and the second filter element 218 are removed for cleaning or replacement.

[0223] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A fresh air ventilator, characterized in that, include: A through-wall pipe, including a first end and a second end that are disposed opposite to each other; The fan is installed inside the through-wall pipe; The heat exchange core is located inside the through-wall pipe; A panel assembly is located at the first end of the through-wall pipe. The panel assembly includes an air outlet frame, a wall mounting plate, and an electrical control module. The wall mounting plate is located between the air outlet frame and the through-wall pipe. The electrical control module has a positioning part, and the wall mounting plate has a positioning mating part. The positioning part and the positioning mating part cooperate to install the electrical control module on the wall mounting plate. The fan is connected to the electrical control module. The air outlet frame has a first air outlet that communicates with the through-wall pipe.

2. The fresh air system according to claim 1, characterized in that, The air outlet frame and the wall-mounted panel can be detachably connected.

3. The fresh air system according to claim 1, characterized in that, Also includes: A rain cap is installed at the second end of the through-wall pipe. The rain cap has a second vent, which is used to connect the outside to the through-wall pipe. A sealing element, including a sealing section, is fitted onto the outside of the second end of the through-wall pipe or onto the outside of the rain cap, for contact with the outer wall surface of the mounting base.

4. The fresh air system according to claim 3, characterized in that, Along the direction from the panel assembly to the rain cap, the sealing section is inclined toward the axis of the through-wall pipe.

5. The fresh air system according to claim 3, characterized in that, The seal also includes: The first connecting section is sleeved on the outside of the second end of the through-wall pipe or on the outside of the rain cap, and is located on the side of the sealing section away from the rain cap. The first shielding section is located outside the first connecting section and extends circumferentially along the first connecting section.

6. The fresh air system according to claim 5, characterized in that, The seal also includes: The second shielding section is located on the side of the first shielding section away from the sealing section, and the second shielding section is provided with a flow port.

7. The fresh air system according to claim 3, characterized in that, The seal also includes: The second connecting section is connected to the sealing section and is located between the rain cap and the through-wall pipe.

8. The fresh air system according to any one of claims 1 to 7, characterized in that, Also includes: The inner tube is located inside the through-wall pipe, and the fan and heat exchange core are both located inside the inner tube; The inner tube includes a first pipe section and a second pipe section, which are arranged sequentially along the axial direction of the inner tube. The first pipe section and the second pipe section are detachably connected.

9. The fresh air system according to any one of claims 1 to 7, characterized in that, Also includes: An environmental parameter sensor is located at the second end of the through-wall pipe and connected to the electrical control module to detect environmental parameters.

10. The fresh air system according to any one of claims 1 to 7, characterized in that, Also includes: The first filter element is located inside the through-wall pipe and positioned between the rainproof cap and the heat exchange core; and / or The second filter element is located inside the through-wall pipe and between the heat exchange core and the panel assembly.

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