Bidirectional fresh air device

Abstract

The utility model provides a kind of two-way fresh air device, it is related to air purification technical field, two-way fresh air device includes total heat exchanger, first exchange subassembly and second exchange subassembly, first exchange subassembly includes the first import and first export of being located in the opposite side of total heat exchanger and the first fan being located between first import and first export, second exchange subassembly includes the second import and second export of being located in the other opposite side of total heat exchanger and the second fan being located between second import and the second export, total heat exchanger is located in the intersection area of first air flow channel formed between first import and first export and second air flow channel formed between second import and second export, first fan is arranged in first air flow channel, second fan is arranged in second air flow channel, realize indoor and outdoor air replacement, when outdoor airflow and indoor airflow pass through total heat exchanger, heat of two is transferred by heat exchange core, energy can be recycled.

Description

Technical Field

[0001] This utility model relates to the field of air purification technology, and in particular to a two-way fresh air device. Background Technology

[0002] As society continues to develop and people's quality of life improves significantly, their requirements for indoor air quality are becoming increasingly stringent. An ideal home environment should have good ventilation to ensure fresh and healthy indoor air.

[0003] In the process of developing this invention, the inventors discovered at least the following problems in the existing technology: Most common fresh air systems on the market currently adopt a unidirectional flow method, which can only allow outdoor airflow to enter the room, but lacks effective exhaust function. This design is particularly inadequate during the summer air conditioning season in the south and the winter heating season in the north. Because these two seasons require high indoor airtightness, unidirectional flow fresh air systems cannot effectively remove accumulated indoor pollutants such as formaldehyde, benzene, and carbon dioxide, resulting in insufficient exchange between polluted indoor air and fresh outdoor air, thus adversely affecting the health of residents. Furthermore, existing unidirectional flow fresh air systems also suffer from significant energy waste during operation. During the summer air conditioning season in the south and the winter heating season in the north, the fresh air system cannot recover energy during ventilation. This means that while exhausting indoor air, a large amount of energy heated or cooled by air conditioning or heating is also taken away, resulting in substantial energy loss. This energy waste not only increases users' energy costs but also contradicts the modern concept of energy conservation and environmental protection. Therefore, developing a fresh air system that can effectively exchange indoor and outdoor air and recover energy is of significant practical importance for improving home air quality and reducing energy consumption. Utility Model Content

[0004] The purpose of this invention is to provide a two-way fresh air device to achieve indoor and outdoor air exchange and energy recovery.

[0005] To achieve the above objectives, the technical solution of this utility model embodiment is as follows: A two-way fresh air device, comprising: Total heat exchanger; The first exchange component includes a first inlet and a first outlet located on opposite sides of the total heat exchanger, and a first fan located between the first inlet and the first outlet; The second exchange component includes a second inlet and a second outlet located on the opposite side of the total heat exchanger, and a second fan located between the second inlet and the second outlet; The total heat exchanger is located in the intersection area of ​​the first airflow channel formed between the first inlet and the first outlet, and the second airflow channel formed between the second inlet and the second outlet.

[0006] Furthermore, In the airflow direction of the first airflow channel, the first exchange component includes a filter array located in front of the first fan.

[0007] Furthermore, The filter assembly includes a primary filter, a medium-efficiency filter, and a high-efficiency filter, arranged sequentially against each other in the airflow direction of the first airflow channel.

[0008] Furthermore, The first exchange component further includes a first air valve, which is located at the first inlet.

[0009] Furthermore, The first air valve includes a first valve seat, a first valve, a rocker arm, and a first motor; The first valve is disposed inside the first valve seat, and the output end of the first motor is connected to the rocker arm to drive the rocker arm to move the first valve so as to block or unblock the first inlet.

[0010] Furthermore, The second exchange component also includes a second air valve, which is located at the second outlet.

[0011] Furthermore, The second air valve includes a second valve seat and a second valve. The second valve is hinged to the second valve seat. The second valve blocks the second outlet under its own weight. When the second fan is turned on to drive the airflow in the second airflow channel, the second valve opens to unblock the second outlet.

[0012] Furthermore, The bidirectional first device also includes a housing, in which the total heat exchanger, the first fan, and the second fan are all housed; the first airflow channel and the second airflow channel are perpendicular to each other.

[0013] Furthermore, The housing is also provided with a fan cover for fixing the opposite ends of the first fan.

[0014] Furthermore, The housing includes a base and a panel covering the base, and the total heat exchanger, the first fan and the second fan are arranged in a direction parallel to the panel.

[0015] Compared with the prior art, the embodiments of this utility model have at least the following technical effects: This utility model embodiment of the bidirectional fresh air device includes a total heat exchanger, a first exchange component, and a second exchange component. The first exchange component includes a first inlet and a first outlet located on opposite sides of the total heat exchanger, and a first fan located between the first inlet and the first outlet. The second exchange component includes a second inlet and a second outlet located on opposite sides of the total heat exchanger, and a second fan located between the second inlet and the second outlet. The total heat exchanger is located at the intersection area of ​​a first airflow channel formed between the first inlet and the first outlet, and a second airflow channel formed between the second inlet and the second outlet. A first fan is installed in the first airflow channel, and a second fan is installed in the second airflow channel. Outdoor airflow flows into the room after passing through the first inlet and the first outlet in sequence, while indoor airflow is discharged to the outside after passing through the second inlet and the second outlet in sequence, realizing indoor and outdoor air exchange. When the outdoor airflow and the indoor airflow pass through the total heat exchanger, the heat between them is transferred through the heat exchange core. In winter, when the indoor air temperature is high, the heat from the airflow expelled from indoors to outdoors will be transferred to the airflow flowing from outdoors into indoors, thus raising the temperature of the airflow entering indoors. In summer, the heat from the airflow flowing from outdoors into indoors will be transferred to the airflow expelled from indoors to outdoors, thus lowering the temperature of the airflow entering indoors, and energy can be recovered. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a structure in one embodiment of a two-way fresh air device; Figure 2 This is a schematic diagram showing the panel open in one embodiment of a two-way fresh air device. Figure 3 This is a schematic diagram of a two-way fresh air system with the total heat exchanger installed on the base in one embodiment. Figure 4 This is a schematic diagram of a bidirectional fresh air device in which the first inlet, first outlet, second inlet, and second outlet are installed on the base. Figure 5 This is a schematic diagram of the first air valve being in the closed state in one embodiment of a two-way fresh air device; Figure 6 This is a schematic diagram of the first air valve being in the open state in one embodiment of a two-way fresh air device; Figure 7 This is a schematic diagram of the second air valve being in the closed state in one embodiment of a two-way fresh air device; Figure 8This is a schematic diagram of the second air valve in the open state in one embodiment of a two-way fresh air device.

[0017] Explanation of icon numbers: 10. Total heat exchanger; 20. Housing; 21. Base; 22. Panel; 23. First Inlet; 24. First Outlet; 25. Second Inlet; 26. Second Outlet; 27. Fan Cover; 30. First fan; 40. Second fan; 50. Filter assembly; 51. Pre-filter; 52. Medium-efficiency filter; 53. High-efficiency filter; 60. First air valve; 61. First valve seat; 62. First valve; 63. Rocker arm; 64. First motor; 70. Second air valve; 71. Second valve seat; 72. Second valve. Detailed Implementation

[0018] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in this specification of this utility model is for the purpose of describing particular embodiments only and is not intended to limit the utility model. In the following description, the expression "some embodiments" refers to a subset of all possible embodiments; however, it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with each other without conflict.

[0019] It should also be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "inner," "outer," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0020] Please see Figure 1-4As shown, in one embodiment of this utility model, a bidirectional fresh air device includes a total heat exchanger 10, a first exchange component, and a second exchange component. The first exchange component includes a first inlet 23 and a first outlet 24 located on opposite sides of the total heat exchanger 10, and a first fan 30 located between the first inlet 23 and the first outlet 24. The second exchange component includes a second inlet 25 and a second outlet 26 located on the other opposite side of the total heat exchanger 10, and a second fan 40 located between the second inlet 25 and the second outlet 26. The total heat exchanger 10 is located in the intersection area of ​​a first airflow channel formed between the first inlet 23 and the first outlet 24, and a second airflow channel formed between the second inlet 25 and the second outlet 26. The first exchange component can immediately provide fresh air, and the second exchange component can provide exhaust air; that is, the first airflow channel can be a fresh air channel, and the second airflow channel can be an exhaust air channel.

[0021] In the aforementioned scheme, the coordinated operation of the first and second exchange components enables efficient exchange of indoor and outdoor air. The first fan 30 introduces fresh outdoor air into the room, providing ample oxygen for occupants and improving indoor air quality. The second fan 40 expels polluted indoor air to the outside, effectively removing odors, harmful gases, and excess carbon dioxide, maintaining fresh and healthy indoor air. When outdoor and indoor airflows pass through the total heat exchanger 10, heat is transferred between them via the heat exchange core. For example, in winter, when indoor air temperature is high, the heat from the airflow expelled from indoors to outdoors is transferred to the airflow flowing into the room from outdoors, increasing the temperature of the incoming airflow and reducing energy consumption of indoor heating equipment, thus lowering winter heating costs. Conversely, in summer, the heat from the airflow flowing into the room from outdoors is transferred to the airflow expelled from indoors to outdoors, decreasing the temperature of the incoming airflow from outdoors, reducing the burden on indoor cooling equipment and saving summer cooling energy consumption. This energy recovery mechanism significantly improves energy utilization efficiency, achieving energy conservation and emission reduction.

[0022] Please see Figure 2-3 As shown, in one embodiment of this utility model, in the airflow direction of the first airflow channel, the first exchange component includes a filter group 50 located in front of the first fan 30, which can effectively filter the airflow flowing from the outside into the room. Furthermore, please refer to... Figure 3As shown, in one embodiment of this utility model, the filter group 50 includes a pre-filter 51, a medium-efficiency filter 52, and a high-efficiency filter 53. In the airflow direction of the first airflow channel, the pre-filter 51, medium-efficiency filter 52, and high-efficiency filter 53 are arranged sequentially against each other. The pre-filter 51 can intercept larger dust particles and other pollutants, initially purifying the airflow from outside into the room and reducing the burden on subsequent filters. The medium-efficiency filter 52 further filters out smaller particles, improving filtration accuracy. The high-efficiency filter 53 can filter out tiny particles, bacteria, viruses, and other harmful substances, ensuring a high level of cleanliness in the indoor air and providing a healthy and safe breathing environment for indoor occupants. This is especially beneficial for families with elderly people, children, pregnant women, or those with respiratory illnesses, effectively reducing the risk of respiratory diseases and improving the health quality of the living environment.

[0023] Please see Figure 5-6 As shown, in one embodiment of this utility model, the first exchange component further includes a first air valve 60, which is disposed at the first inlet 23. The first air valve can be used to block the first inlet 23. When the first inlet 23 is blocked, it can effectively prevent outdoor polluted air from flowing back into the room, avoiding outdoor dust, odors, pollutants, etc. from entering the room through the first inlet 23 when the first fan 30 is not working or malfunctions. This maintains the cleanliness and stability of the indoor air, enhances the sealing and protection capabilities of the bidirectional fresh air device, and ensures that the indoor air quality is always in a good state. Further details can be found in the following section. Figure 5-6 As shown, in one embodiment of this utility model, the first air valve 60 includes a first valve seat 61, a first valve 62, a rocker arm 63, and a first motor 64. The first valve 62 is disposed inside the first valve seat 61. The output end of the first motor 64 is connected to the rocker arm 63, driving the rocker arm 63 to move the first valve 62 to block or unblock the first inlet 23. The first air valve 60, through the first motor 64, rocker arm 63, and other structures, achieves the blocking or unblocking of the first inlet 23, and can intelligently control the introduction of outdoor air according to actual needs and indoor environmental conditions. For example, when the air quality is poor or a large amount of outdoor air is not needed, the first air valve 60 can be closed to reduce the amount of outdoor air introduced. When ventilation is needed, the first air valve 60 can be opened so that the first fan 30 can smoothly introduce outdoor air into the room, realizing flexible control of the introduction of outdoor air.

[0024] Please see Figure 7-8 As shown, in one embodiment of this utility model, the second exchange component further includes a second air valve 70, which is disposed at the second outlet 26. Further details can be found in the following documentation. Figure 7-8As shown, in one embodiment of this utility model, the second air valve 70 includes a second valve seat 71 and a second valve 72. The second valve 72 is hinged to the second valve seat 71. Under its own weight, the second valve 72 blocks the second outlet 26. When the second fan 40 is turned on to drive the airflow in the second airflow channel, the second valve 72 can open to unblock the second outlet 26. The second air valve 70 is located at the second outlet 26. When the second fan 40 is not working, the second valve 72 blocks the second outlet 26 under its own weight, effectively preventing outdoor polluted air from flowing back into the room through the second outlet 26. This further enhances the sealing performance of the bidirectional fresh air device, ensuring that the indoor air is not polluted by the outside, providing a stable and healthy breathing environment for indoor occupants, and avoiding the impact of outdoor air pollution on indoor air quality. When the second fan 40 is started, the airflow in the second airflow channel causes the second valve 72 to open, unblocking the second outlet 26, allowing the indoor polluted air to be smoothly discharged to the outside. It avoids the accumulation of indoor pollutants due to poor ventilation, ensures continuous purification and renewal of indoor air, and maintains a healthy and comfortable indoor air environment.

[0025] Please see Figure 1-4 As shown, in one embodiment of this utility model, the bidirectional fresh air device further includes a housing 20, within which the total heat exchanger 10, the first fan 30, and the second fan 40 are all housed; the first airflow channel and the second airflow channel are perpendicular to each other. The housing 20 houses the total heat exchanger 10, the first fan 30, and the second fan 40, making the overall structure of the bidirectional fresh air device more compact and neat, facilitating installation and placement, and saving space.

[0026] Please see Figure 3-4 As shown, in one embodiment of the present invention, the housing 20 is further provided with a fan cover 27 for fixing the opposite ends of the first fan 30. The fan cover 27 can stably press the opposite ends of the first fan 30 into the housing 20, ensuring that the first fan 30 will not loosen or shift during operation, thereby improving the operational stability of the first fan 30.

[0027] Please see Figure 1-2As shown, in one embodiment of this utility model, the housing 20 includes a base 21 and a panel 22 covering the base 21. The total heat exchanger 10, the first fan 30, and the second fan 40 are arranged parallel to the panel 22. The structural design of the base 21 and the panel 22 allows for easy access to components inside the base 21, such as filters, after opening the panel 22. This facilitates maintenance and component replacement for users or maintenance personnel without disassembling the entire device or performing complex procedures, significantly reducing maintenance costs and repair time. For example, when the filter needs replacement, it can be easily replaced simply by opening the panel 22, improving the maintainability of the bidirectional fresh air device, extending its service life, and ensuring that the device is always in good working condition.

[0028] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. The protection scope of this utility model shall be determined by the protection scope of the claims.

Claims

1. A bidirectional fresh air device, characterized in that, include: Total heat exchanger (10); The first exchange component includes a first inlet (23) and a first outlet (24) located on opposite sides of the total heat exchanger (10), and a first fan (30) located between the first inlet (23) and the first outlet (24); The second exchange assembly includes a second inlet (25) and a second outlet (26) located on the opposite side of the total heat exchanger (10), and a second fan (40) located between the second inlet (25) and the second outlet (26); The total heat exchanger (10) is located in the intersection area of ​​the first airflow channel formed between the first inlet (23) and the first outlet (24) and the second airflow channel formed between the second inlet (25) and the second outlet (26).

2. The bidirectional fresh air device according to claim 1, characterized in that, In the airflow direction of the first airflow channel, the first exchange component includes a filter group (50) located in front of the first fan (30).

3. The bidirectional fresh air device according to claim 2, characterized in that, The filter assembly (50) includes a primary filter (51), a secondary filter (52), and a high-efficiency filter (53). In the airflow direction in the first airflow channel, the primary filter (51), the secondary filter (52), and the high-efficiency filter (53) are arranged in sequence to abut against each other.

4. The bidirectional fresh air device according to claim 1, characterized in that, The first exchange component further includes a first air valve (60), which is located at the first inlet (23).

5. The bidirectional fresh air device according to claim 4, characterized in that, The first air valve (60) includes a first valve seat (61), a first valve (62), a rocker arm (63), and a first motor (64); The first valve (62) is located inside the first valve seat (61). The output end of the first motor (64) is connected to the rocker arm (63) to drive the rocker arm (63) to move the first valve (62) to block or unblock the first inlet (23).

6. The bidirectional fresh air device according to claim 1, characterized in that, The second exchange component also includes a second air valve (70), which is located at the second outlet (26).

7. The bidirectional fresh air device according to claim 6, characterized in that, The second air valve (70) includes a second valve seat (71) and a second valve (72). The second valve (72) is hinged to the second valve seat (71). The second valve (72) blocks the second outlet (26) under its own weight. When the second fan (40) is turned on to drive the airflow in the second airflow channel, the second valve (72) opens to unblock the second outlet (26).

8. The bidirectional fresh air device according to claim 1, characterized in that, The bidirectional fresh air device also includes a housing (20), in which the total heat exchanger (10), the first fan (30) and the second fan (40) are all housed, and the first airflow channel and the second airflow channel are perpendicular to each other.

9. The bidirectional fresh air device according to claim 8, characterized in that, The housing (20) is also provided with a fan cover (27) for fixing the opposite ends of the first fan (30).

10. The bidirectional fresh air device according to claim 8, characterized in that, The housing (20) includes a base (21) and a panel (22) covering the base (21). The total heat exchanger (10), the first fan (30) and the second fan (40) are arranged in a direction parallel to the panel (22).

Images