Fresh air machine

Abstract

The utility model relates to the technical field of household appliances, and discloses a fresh air ventilator which is characterized in that outdoor air and indoor air can be firstly introduced into a heat exchange air duct under the condition that the temperature difference between the outdoor air and the indoor air is large, so that heat exchange is carried out on the indoor air and the outdoor air through a total heat exchange module; under the condition that the temperature difference between the outdoor air and the indoor air is small, the outdoor air can be directly introduced into a room through the bypass air duct. By means of the arrangement, the fresh air ventilator can be prevented from being in a high-load state continuously, and then the service life of the fresh air ventilator is ensured.

Description

Technical Field

[0001] This application relates to the field of household appliance technology, such as a fresh air system. Background Technology

[0002] As society develops, users have increasingly higher demands for quality of life. In summer and winter, users often keep doors and windows closed for extended periods, leading to stale indoor air and increased carbon dioxide levels. Therefore, users often install fresh air systems to treat outdoor air before introducing it indoors, improving air quality. To further enhance the user experience, traditional fresh air systems typically cool or heat the outdoor air, ensuring that the outdoor air reaches the same temperature as the indoor air upon entering, thus preventing indoor temperature fluctuations from negatively impacting the user experience.

[0003] In related technologies, to reduce the energy consumption of fresh air systems, a total heat exchange module is installed inside the system. The fresh air system simultaneously draws indoor and outdoor air to the total heat exchange module, allowing the indoor and outdoor air to exchange heat with each other. This way, outdoor air can be introduced into the room only after its temperature has reached a similar level to that of indoor air.

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

[0005] In related technologies, fresh air systems equipped with total heat exchange modules will continue to exchange heat between the outdoor and indoor air even when the outdoor and indoor air temperatures are similar. This causes the fresh air system to operate under continuous high load, affecting its lifespan.

[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 fresh air system that, when there is a large temperature difference between outdoor and indoor air, introduces both outdoor and indoor air into a heat exchange duct to exchange heat through a total heat exchange module. When the temperature difference is small, outdoor air can be directly introduced into the room through a bypass duct. This design avoids the fresh air system from operating under continuous high load, thus ensuring its service life.

[0009] This disclosure provides a fresh air blower including: a casing, a total heat exchange module, a bypass box, a heat exchange valve body, and a bypass valve body. The casing is provided with a heat exchange air duct, an inlet air duct, and an outlet air duct, which are respectively connected to the heat exchange air duct; the total heat exchange module is disposed in the heat exchange air duct; the bypass box is disposed on one side of the total heat exchange module, the bypass box includes a bypass box body, the bypass box body is provided with a bypass air duct, and the fresh air duct and the outlet air duct are also respectively connected to the bypass air duct; the heat exchange valve body is used to unblock or block the heat exchange air duct; the bypass valve body is used to unblock or block the bypass air duct.

[0010] In some embodiments, the bypass box body includes a bypass box base and a bypass box cover. The bypass box base is disposed on one side of the total heat exchange module; the bypass box cover is fastened to the side of the bypass box base near the total heat exchange module; wherein, a hollow cavity exists between the bypass box cover and the bypass box base to form a bypass ventilation duct.

[0011] In some embodiments, the bypass duct includes a bypass inlet and a bypass outlet, which are respectively connected to an inlet duct and an outlet duct; the bypass valve body includes a bypass vane and a bypass motor. The bypass vane is rotatably disposed at the bypass inlet or the bypass outlet; the bypass motor is drivenly connected to the bypass vane; wherein, the bypass motor can drive the bypass vane to rotate to unblock or block the bypass inlet or the bypass outlet.

[0012] In some embodiments, a mounting groove is provided at the position corresponding to the bypass motor in the bypass box, and the bypass motor is installed in the mounting groove.

[0013] In some embodiments, the heat exchange valve body includes: a frame, heat exchange vanes, and a heat exchange motor. The frame is disposed in the heat exchange duct; the heat exchange vanes are rotatably disposed in the frame; the heat exchange motor is drivenly connected to the heat exchange vanes; wherein, the heat exchange motor can drive the heat exchange vanes to rotate to clear or block the heat exchange duct.

[0014] In some embodiments, the heat exchange valve body includes a plurality of heat exchange vanes, which are arranged in parallel and spaced apart on the frame; the heat exchange valve body also includes a transmission link. The transmission link is rotatably connected to the plurality of heat exchange vanes respectively; wherein, the heat exchange motor is driven to the transmission link to drive the transmission link to reciprocate, thereby driving the heat exchange vanes to rotate.

[0015] In some embodiments, the heat exchange air duct includes a heat exchange air inlet and a heat exchange air outlet, which are respectively connected to the air inlet duct and the air outlet duct; the housing is also provided with a mounting slot at the position corresponding to the heat exchange air inlet or the heat exchange air outlet; wherein the shape and size of the mounting slot are provided to correspond to the frame so that the frame can be inserted into the mounting slot.

[0016] In some embodiments, a clearance groove is provided on one side of the mounting slot, and the heat exchange motor can be installed in the clearance groove.

[0017] In some embodiments, the fresh air unit further includes a temperature sensor and a control device. The temperature sensor is used to acquire the outdoor temperature and the indoor temperature; the control device is electrically connected to the temperature sensor, the heat exchange valve body, and the bypass valve body, respectively; wherein, the control device can control the heat exchange valve body and the bypass valve body to open or block the corresponding air ducts according to the outdoor temperature and the indoor temperature.

[0018] In some embodiments, when the temperature difference between outdoor air and indoor air is less than or equal to a preset temperature difference, the control device controls the heat exchange valve body to block the heat exchange air duct and controls the bypass valve body to clear the bypass air duct.

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

[0020] This disclosure provides a fresh air unit comprising: a casing, a total heat exchange module, a bypass box, a heat exchange valve body, and a bypass valve body. The casing is provided with a heat exchange duct, an air inlet duct, and an air supply duct, the air inlet duct and the air supply duct being respectively connected to the heat exchange duct; the total heat exchange module is disposed within the heat exchange duct; the bypass box is disposed on one side of the total heat exchange module, the bypass box including a bypass body, the bypass body being provided with a bypass duct, and the fresh air duct and the air supply duct being respectively connected to the bypass duct; the heat exchange valve body is used to unblock or block the heat exchange duct; the bypass valve body is used to unblock or block the bypass duct. Thus, when the temperature difference between outdoor and indoor air is large, outdoor and indoor air can be first introduced into the heat exchange duct to exchange heat through the total heat exchange module; when the temperature difference between outdoor and indoor air is small, outdoor air can be directly introduced into the room through the bypass duct. This configuration avoids the fresh air unit from being under continuous high load, thus ensuring its service life.

[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 a schematic diagram of the structure of a fresh air unit provided in an embodiment of this disclosure;

[0024] Figure 2 This is a schematic diagram of the structure of a foam component provided in an embodiment of this disclosure;

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

[0026] Figure 4 This is a schematic diagram of the structure of a bypass base provided in an embodiment of this disclosure;

[0027] Figure 5 This is a schematic diagram of the structure of a heat exchange valve body provided in an embodiment of this disclosure.

[0028] Figure label:

[0029] 10: Housing; 101: Fresh air inlet; 102: Indoor air supply outlet; 103: Indoor return air inlet; 104: Exhaust outlet; 105: Mounting slot; 106: Clearance groove; 11: Heat exchange air duct; 12: Foaming component; 13: Inlet air duct; 14: Outlet air duct;

[0030] 21: Total heat exchange module; 22: Heat exchange valve body; 221: Frame; 222: Heat exchange vane; 223: Heat exchange motor; 224: Transmission link;

[0031] 30: Bypass box body; 31: Bypass box base; 311: Mounting groove; 32: Bypass box cover; 33: Bypass ventilation duct; 34: Bypass valve body; 341: Bypass vane; 342: Bypass motor. Detailed Implementation

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] Unless otherwise stated, the term "multiple" means two or more.

[0037] 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.

[0038] 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.

[0039] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0040] like Figures 1 to 5As shown, this embodiment of the present disclosure provides a fresh air unit. When the temperature difference between outdoor and indoor air is large, both outdoor and indoor air can be introduced into the heat exchange duct 11 to exchange heat through the total heat exchange module 21. When the temperature difference between outdoor and indoor air is small, outdoor air can be directly introduced into the room through the bypass duct 33. This configuration avoids the fresh air unit from being continuously under high load, thereby ensuring the service life of the fresh air unit.

[0041] like Figures 1 to 5 As shown, this embodiment of the present disclosure provides a fresh air unit including: a housing 10, a total heat exchange module 21, a bypass box 30, a heat exchange valve body 22, and a bypass valve body 34. The housing 10 is provided with a heat exchange duct 11, an air inlet duct 13, and an air supply duct 14, which are respectively connected to the heat exchange duct 11; the total heat exchange module 21 is disposed in the heat exchange duct 11; the bypass box 30 is disposed on one side of the total heat exchange module 21, and the bypass box 30 includes a bypass box 30 and a bypass duct 33, which is also connected to the fresh air duct and the air supply duct 14; the heat exchange valve body 22 is used to unblock or block the heat exchange duct 11; the bypass valve body 34 is used to unblock or block the bypass duct 33.

[0042] Specifically, the housing 10 includes a fresh air inlet 101, an indoor air supply inlet 102, an indoor return air inlet 103, and an exhaust outlet 104. The fresh air inlet 101 is connected to the air intake duct 13, and the indoor air supply inlet 102 is connected to the air supply duct 14. The fresh air unit also includes a fan assembly, which is used to draw in outdoor air through the fresh air inlet 101 and blow the outdoor air into the room through the indoor air supply inlet 102 to improve the indoor air quality. A hollow installation compartment is provided inside the housing 10. The total heat exchange module 21 and the bypass box 30 are installed in the installation compartment. The bypass box 30 is installed on one side of the total heat exchange module 21, and the part of the installation compartment used to install the total heat exchange module 21 constitutes the heat exchange duct 11. The heat exchange duct 11 and the bypass duct 33 are independent of each other to avoid interference between the airflow of the heat exchange duct 11 and the bypass duct 33.

[0043] When the temperature difference between outdoor and indoor air is small, the heat exchange valve body 22 blocks the heat exchange air duct 11, and the bypass valve body 34 clears the bypass air duct 33. At this time, the fan assembly introduces outdoor air through the fresh air inlet 101. The outdoor air flows into the bypass air duct 33 through the air inlet duct 13, and then is blown into the room through the air supply duct 14 and the indoor air supply outlet 102.

[0044] When there is a large temperature difference between outdoor and indoor air, the heat exchange valve body 22 clears the heat exchange duct 11, and the bypass valve body 34 blocks the bypass duct 33. At this time, the fan assembly introduces outdoor air into the heat exchange duct 11 through the fresh air inlet 101 and the air inlet duct 13, and introduces indoor exhaust gas into the heat exchange duct 11 through the indoor return air inlet 103. In this way, indoor and outdoor air can exchange heat through the total heat exchange module 21 to reduce the temperature difference between indoor and outdoor air. After the outdoor air and indoor air exchange heat in the total heat exchange duct, the fan blows the outdoor air into the room through the air supply duct 14 and the indoor air supply outlet 102. At the same time, after the indoor air completes the heat exchange in the total heat exchange module 21, it can be discharged to the outside through the exhaust outlet 104 to achieve indoor air circulation.

[0045] With this setup, when the outdoor and indoor temperatures are similar, outdoor air can be directly introduced into the room, avoiding the fresh air unit from being under continuous high load, thus ensuring the lifespan of the fresh air unit.

[0046] In practical applications, the depth of the installation compartment is equal to the sum of the thickness of the total heat exchange module 21 and the thickness of the bypass box 30. In this way, after the total heat exchange module 21 and the bypass box 30 are installed in the installation compartment, the total heat exchange module 21 or the bypass box 30 can be prevented from protruding from the housing 10, thereby improving the aesthetics of the fresh air unit.

[0047] like Figure 2 As shown, optionally, a foaming component 12 is provided inside the housing 10, and the foaming component 12 is constructed with a heat exchange air duct 11, an air inlet air duct 13 and an air outlet air duct 14.

[0048] like Figures 1 to 5 As shown, in some embodiments, the bypass box body 30 includes a bypass box base 31 and a bypass box cover 32. The bypass box base 31 is disposed on one side of the total heat exchange module 21; the bypass box cover 32 is fastened to the side of the bypass box base 31 near the total heat exchange module 21; wherein, there is a hollow cavity between the bypass box cover 32 and the bypass box base 31 to form a bypass ventilation duct 33.

[0049] Specifically, the bypass box cover 32 can be fixedly installed on the bypass box base 31, and the distance between the bypass box cover 32 and the bypass box base 31 is greater than or equal to a preset distance to increase the size of the bypass ventilation duct 33. Simultaneously, the bypass box cover 32 is fitted against the side wall of the total heat exchange module 21, preventing gaps between the bypass box 30 and the total heat exchange module 21. Thus, with the heat exchange valve body 22 clearing the heat exchange duct 11 and the bypass valve body 34 blocking the bypass ventilation duct 33, it is ensured that outdoor and indoor air completely flow into the total heat exchange module 21.

[0050] In practical applications, the bypass box cover 32 can be snapped onto the bypass box base 31 by means of snap-fit ​​fasteners or other fasteners, or it can be fixed to the bypass box base 31 by means of bolts or other fasteners.

[0051] In the above embodiments, the shapes and dimensions of the installation compartment, the total heat exchange module 21, and the bypass box 30 are arranged correspondingly to each other. For example, if the total heat exchange module 21 is generally configured as a regular pentagonal prism structure, then the installation compartment and the bypass box 30 are also configured as regular pentagonal prism structures.

[0052] like Figure 3 and Figure 4 As shown, in some embodiments, the bypass duct 33 includes a bypass inlet and a bypass outlet, which are respectively connected to the inlet duct 13 and the outlet duct; the bypass valve body 34 includes a bypass vane 341 and a bypass motor 342. The bypass vane 341 is rotatably disposed at the bypass inlet or the bypass outlet; the bypass motor 342 is drivenly connected to the bypass vane 341; wherein, the bypass motor 342 can drive the bypass vane 341 to rotate to unblock or block the bypass inlet or the bypass outlet.

[0053] Specifically, a bypass oscillating blade 341 is disposed at either the bypass air inlet or the bypass air outlet, and both ends of the bypass oscillating blade 341 are rotatably connected to the bypass housing 30 via rotating shafts. A bypass motor 342 is disposed on one side of the bypass oscillating blade 341, and the drive shaft of the bypass motor 342 is drivenly connected to the rotating shaft of the bypass oscillating blade 341 to drive the bypass oscillating blade 341 to rotate circumferentially. If the bypass oscillating blade 341 is disposed at the bypass air inlet, its size is greater than or equal to the size of the bypass air inlet; if the bypass oscillating blade 341 is disposed at the bypass air outlet, its size is greater than or equal to the size of the bypass air outlet.

[0054] When the temperature difference between outdoor and indoor air is small, the bypass motor 342 drives the bypass vane 341 to rotate to a position parallel to the bypass ventilation duct 33, thereby clearing the bypass ventilation duct 33. At this time, outdoor air can directly flow into the room through the bypass ventilation duct 33. When the temperature difference between outdoor and indoor air is large, the bypass motor 342 drives the bypass vane 341 to rotate to a position perpendicular to the bypass ventilation duct 33, thereby blocking the bypass ventilation duct 33. At this time, outdoor air can only flow into the room through the heat exchange duct 11.

[0055] like Figure 3 and Figure 4 As shown, in some embodiments, the bypass box 30 is provided with a mounting groove 311 at the position corresponding to the bypass motor 342, and the bypass motor 342 is installed in the mounting groove 311.

[0056] Specifically, the folded edge adjacent to the bypass box base 31 and the bypass louver 341 is recessed into the bypass ventilation duct 33, so that the mounting groove 311 is located within the bypass ventilation duct 33. The size of the mounting groove 311 is greater than or equal to the size of the bypass motor 342, so that the bypass motor 342 can be completely installed within the mounting groove 311. The bypass box cover 32 is provided with a corresponding folded edge to the mounting groove 311, and the folded edge can be fastened to the outside of the mounting groove 311 to seal the mounting groove 311. In this way, not only can foreign objects be prevented from entering the mounting groove 311, but the aesthetics of the bypass box body 30 can also be improved.

[0057] like Figure 5 As shown, in some embodiments, the heat exchange valve body 22 includes: a frame 221, a heat exchange vane 222, and a heat exchange motor 223. The frame 221 is disposed in the heat exchange duct 11; the heat exchange vane 222 is rotatably disposed in the frame 221; the heat exchange motor 223 is drivenly connected to the heat exchange vane 222; wherein, the heat exchange motor 223 can drive the heat exchange vane 222 to rotate to clear or block the heat exchange duct 11.

[0058] Specifically, the frame 221 is fixedly installed in the heat exchange duct 11, and the two ends of the heat exchange blades 222 are rotatably mounted on the frame 221 via rotating shafts. The heat exchange motor 223 is connected to the heat exchange blades 222 for transmission, so as to drive the heat exchange blades 222 to rotate circumferentially.

[0059] When the temperature difference between outdoor and indoor air is small, the heat exchange motor 223 drives the heat exchange vane 222 to rotate to a position perpendicular to the heat exchange duct 11, thus blocking the heat exchange duct 11. At this time, outdoor air cannot flow into the room through the heat exchange duct 11, and therefore cannot exchange heat with the indoor air through the total heat exchange module 21. When the temperature difference between outdoor and indoor air is large, the heat exchange motor 223 drives the heat exchange vane 222 to rotate to a position parallel to the bypass ventilation duct 33, thus clearing the bypass ventilation duct 33. At this time, outdoor air and indoor air can flow into the heat exchange duct 11 and exchange heat through the total heat exchange module 21.

[0060] like Figure 5 As shown, in some embodiments, the heat exchange valve body 22 includes a plurality of heat exchange vanes 222, which are arranged in parallel and spaced apart on the frame 221; the heat exchange valve body 22 also includes a transmission link 224. The transmission link 224 is rotatably connected to the plurality of heat exchange vanes 222 respectively; wherein, the heat exchange motor 223 is drivenly connected to the transmission link 224 to drive the transmission link 224 to reciprocate, thereby driving the heat exchange vanes 222 to rotate.

[0061] Specifically, multiple heat exchange blades 222 are arranged along the length of the frame 221, and each of the multiple heat exchange blades 222 is rotatably mounted on the frame 221. A transmission connecting rod 224 is arranged perpendicular to the multiple heat exchange blades 222 and is rotatably connected to each of the multiple heat exchange blades 222. A heat exchange motor 223 is driven by the transmission connecting rod 224 and can simultaneously drive the multiple heat exchange blades 222 to rotate via the transmission connecting rod 224.

[0062] It is understandable that the total heat exchange module 21 is generally large in size, and therefore the heat exchange duct 11 is also large in size. Therefore, by blocking the heat exchange duct 11 with multiple heat exchange vanes 222, the size of a single heat exchange vane 222 can be avoided from being too large, thereby avoiding interference between the heat exchange vane 222 and the total heat exchange module 21 or other components when the heat exchange vane 222 moves.

[0063] like Figure 2 and Figure 5 As shown, in some embodiments, the heat exchange duct 11 includes a heat exchange inlet and a heat exchange outlet, which are respectively connected to the inlet duct 13 and the outlet duct; the housing 10 is also provided with a mounting slot 105 at the position corresponding to the heat exchange inlet or the heat exchange outlet; wherein the shape and size of the mounting slot 105 are provided to correspond to the frame 221 so that the frame 221 can be inserted into the mounting slot 105.

[0064] Specifically, outdoor air from the air inlet duct 13 can flow into the heat exchange duct 11 through the heat exchange inlet and flow into the room through the heat exchange outlet. The foaming element 12 has a mounting slot 105 corresponding to the bypass box 30, and one side of the mounting slot 105 has an opening. The frame 221 can be inserted into the mounting slot 105 through the opening to install the heat exchange valve body 22 at either the heat exchange inlet or the heat exchange outlet. When the mounting slot 105 is provided at the heat exchange inlet, the heat exchange valve body 22 is installed at the heat exchange inlet, and the size of the heat exchange valve body 22 is greater than or equal to the size of the heat exchange inlet, so that the heat exchange valve body 22 can completely seal the heat exchange inlet. When the mounting slot 105 is provided at the heat exchange outlet, the heat exchange valve body 22 is installed at the heat exchange outlet, and the size of the heat exchange valve body 22 is greater than or equal to the size of the heat exchange outlet, so that the heat exchange valve body 22 can completely seal the heat exchange outlet.

[0065] like Figure 2 and Figure 5 As shown, in some embodiments, a clearance groove 106 is also provided on one side of the mounting slot 105, and the heat exchange motor 223 can be installed in the clearance groove 106.

[0066] Specifically, a clearance groove 106 is provided at the position corresponding to the heat exchange motor 223 on the foaming component 12. The clearance groove 106 is located on the other side of the frame 221 relative to the total heat exchange module 21, and the shape and size of the clearance groove 106 correspond to the heat exchange motor 223. After the frame 221 is inserted into the mounting slot 105, the heat exchange motor 223 can be accommodated in the clearance groove to fix the heat exchange motor 223.

[0067] like Figures 1 to 5 As shown, in some embodiments, the fresh air unit further includes a temperature sensor and a control device. The temperature sensor is used to acquire the outdoor temperature and the indoor temperature; the control device is electrically connected to the temperature sensor, the heat exchange valve body 22, and the bypass valve body 34, respectively; wherein, the control device can control the heat exchange valve body 22 and the bypass valve body 34 to open or block the corresponding air ducts according to the outdoor temperature and the indoor temperature.

[0068] Specifically, the temperature sensor includes multiple temperature probes, and at least one temperature probe is provided at both the fresh air inlet 101 and the return air inlet, so that the temperature sensor can acquire the outdoor and indoor temperatures and transmit them to the control device. The control device can, based on the acquired outdoor and indoor temperatures, control the heat exchange valve body 22 to block the heat exchange duct 11 and control the bypass valve body 34 to clear the bypass duct 33, or control the heat exchange valve body 22 to clear the heat exchange duct 11 and control the bypass valve body 34 to block the bypass duct.

[0069] In some embodiments, when the temperature difference between outdoor air and indoor air is less than or equal to a preset temperature difference, the control device controls the heat exchange valve body 22 to block the heat exchange air duct 11 and controls the bypass valve body 34 to clear the bypass air duct 33.

[0070] Specifically, when the temperature difference between outdoor and indoor air is less than or equal to 5°C, for example, when the temperature difference between outdoor and indoor air is 5°C, 4°C, 3°C, 2°C, or 1°C, the control device controls the heat exchange valve body 22 to block the heat exchange duct 11 and controls the bypass valve body 34 to open the bypass duct 33. Similarly, when the temperature difference between outdoor and indoor air is greater than 5°C, for example, when the temperature difference between outdoor and indoor air is 6°C, 7°C, 8°C, 9°C, or 10°C, the control device controls the heat exchange valve body 22 to open the heat exchange duct 11 and controls the bypass valve body 34 to block the bypass duct 33.

[0071] 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: The casing is provided with a heat exchange air duct, an air inlet air duct and an air outlet air duct, wherein the air inlet air duct and the air outlet air duct are respectively connected to the heat exchange air duct; The total heat exchange module is installed in the heat exchange air duct; A bypass box is disposed on one side of the total heat exchange module. The bypass box includes a bypass duct. The fresh air duct and the supply air duct are respectively connected to the bypass duct. Heat exchange valve body, used to unblock or block the heat exchange air duct; and, The bypass valve body is used to clear or block the bypass ventilation duct.

2. The fresh air system according to claim 1, characterized in that, The bypass box includes: The bypass box base is located on one side of the total heat exchange module; and, The bypass box cover is fastened to the side of the bypass box base near the total heat exchange module; The bypass box cover and the bypass box base have a hollow cavity to form the bypass ventilation duct.

3. The fresh air system according to claim 2, characterized in that, The bypass ventilation duct includes a bypass air inlet and a bypass air outlet, and the bypass air inlet and the bypass air outlet are respectively connected to the air inlet duct and the air outlet duct; The bypass valve body includes: Bypass blades, rotatably mounted at the bypass air inlet or the bypass air outlet; and, A bypass motor is connected to the bypass oscillating blade drive. The bypass motor can drive the bypass blades to rotate in order to clear or block the bypass air inlet or the bypass air outlet.

4. The fresh air system according to claim 3, characterized in that, The bypass box body is provided with a mounting groove at the position corresponding to the bypass motor, and the bypass motor is installed in the mounting groove.

5. The fresh air system according to claim 1, characterized in that, The heat exchange valve body includes: The frame is disposed in the heat exchange air duct; Heat exchange vanes, rotatably mounted on the frame; and, A heat exchange motor is connected to the heat exchange vane drive. The heat exchange motor can drive the heat exchange vanes to rotate in order to clear or block the heat exchange duct.

6. The fresh air system according to claim 5, characterized in that, The heat exchange valve body includes a plurality of heat exchange vanes, and the plurality of heat exchange vanes are arranged in parallel and spaced apart on the frame. The heat exchange valve body also includes: The transmission connecting rods are rotatably connected to the plurality of heat exchange blades, respectively; The heat exchange motor is driven by the transmission link to drive the transmission link to reciprocate, thereby driving the heat exchange blades to rotate.

7. The fresh air system according to claim 5, characterized in that, The heat exchange duct includes a heat exchange inlet and a heat exchange outlet, the heat exchange inlet and the heat exchange outlet being connected to the inlet duct and the outlet duct, respectively; and... The housing is also provided with mounting slots at positions corresponding to the heat exchange air inlet or the heat exchange air outlet. The shape and size of the mounting slot correspond to the frame, so that the frame can be inserted into the mounting slot.

8. The fresh air system according to claim 7, characterized in that, A clearance groove is also provided on one side of the mounting slot, and the heat exchange motor can be installed in the clearance groove.

9. The fresh air unit according to any one of claims 1 to 8, characterized in that, Also includes: Temperature sensor used to obtain outdoor and indoor temperatures; and, The control device is electrically connected to the temperature sensor, the heat exchange valve body, and the bypass valve body, respectively. The control device can control the heat exchange valve body and the bypass valve body to open or block the corresponding air ducts according to the outdoor temperature and the indoor temperature, respectively.

10. The fresh air system according to claim 9, characterized in that, When the temperature difference between outdoor air and indoor air is less than or equal to a preset temperature difference, the control device controls the heat exchange valve body to block the heat exchange duct and controls the bypass valve body to clear the bypass duct.

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