Air inlet and outlet reversing structure and air conditioner

Abstract

This utility model relates to the field of air conditioning equipment and discloses an air inlet / outlet reversing structure and an air conditioner, including a centrifugal fan and a first air supply channel and a second air supply channel arranged in parallel. One end of the first air supply channel is an indoor air outlet connected to the room, and the other end is connected to the air outlet of the centrifugal fan. One end of the second air supply channel is an outdoor air outlet connected to the outside, and the other end is connected to the air inlet of the centrifugal fan. It also includes a first reversing channel and a second reversing channel arranged in a cross manner. Both ends of the first reversing channel and the second reversing channel are respectively connected to the first air supply channel and the second air supply channel, so as to provide a highly reliable reversing mechanism that can easily realize bidirectional switching of air inlet and outlet.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning equipment, specifically to an air inlet / outlet reversing structure and an air conditioner. Background Technology

[0002] Currently, most air conditioning units with independent fresh air exchange functions use centrifugal fans. These fans, driven by centrifugal motors, generate high air pressure and strong airflow, ensuring effective fresh air exchange even with multiple filters, making it the mainstream technology in the industry. However, due to their inherent blade structure and motor configuration, most centrifugal fans can only rotate in one direction. To achieve airflow direction switching—for example, switching from fresh air mode (drawing outdoor air into the room) to exhaust mode (exhausting indoor air to the outside)—simply reversing the fan's direction is not sufficient. This limitation necessitates the addition of an airflow reversing mechanism to existing solutions. For example, as shown in patent application CN217817258U, this application sets up multiple reversing brackets, including fresh air brackets and exhaust brackets. When applicable to specific working conditions, different reversing brackets 400 are selected and installed in the duct cavity 310. For example, the fresh air bracket 410 is installed in the duct cavity 310, or the exhaust bracket 420 is installed in the duct cavity 310, or the circulation bracket 430 is installed in the duct cavity 310. The reversing achieved in the above manner not only increases costs but also makes each replacement cumbersome. Frequent disassembly and removal can easily damage the sealing of the reversing structure. Utility Model Content

[0003] The present invention aims to provide an air inlet / outlet reversing structure, thereby providing a highly reliable reversing mechanism that can easily achieve bidirectional switching of air inlet and outlet.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: an air inlet / outlet reversing structure, including a centrifugal fan and a first air supply channel and a second air supply channel arranged in parallel. One end of the first air supply channel is an indoor air outlet connected to the room, and the other end is connected to the air outlet of the centrifugal fan. One end of the second air supply channel is an outdoor air outlet connected to the outside, and the other end is connected to the air inlet of the centrifugal fan. It also includes a first reversing channel and a second reversing channel arranged in a cross manner, with both ends of the first reversing channel and the second reversing channel respectively connected to the first air supply channel and the second air supply channel.

[0005] The first reversing channel has an air inlet on the side closest to the first air supply channel. The air inlet of the first reversing channel is equipped with a first baffle. The first baffle has a first rotating position and a second rotating position. The first rotating position closes the air inlet of the first reversing channel and connects the indoor air outlet with the air outlet of the centrifugal fan. The second rotating position closes the first air supply channel and connects the indoor air outlet with the air inlet of the centrifugal fan through the first reversing channel.

[0006] The second reversing channel has an air outlet on the side closest to the second air supply channel. The air outlet of the second reversing channel is equipped with a second baffle. The second baffle has a first rotating position and a second rotating position. The first rotating position closes the air outlet of the second reversing channel and connects the outdoor air outlet with the air inlet of the centrifugal fan. The second rotating position closes the second air supply channel and connects the outdoor air outlet with the air outlet of the centrifugal fan through the second reversing channel.

[0007] The beneficial effects of this plan are:

[0008] With the above settings, when entering the fresh air mode, the outdoor air vent serves as the air inlet of the entire structure. Both the first and second baffles are located in the first rotation position. Outdoor air enters the second air supply channel through the outdoor air vent, is sent into the first air supply channel by the centrifugal fan, and enters the room through the indoor air vent to form fresh air. When entering the exhaust mode, both the first and second baffles are located in the second rotation position. The indoor air vent serves as the air inlet of the entire structure. After entering the first air supply channel through the indoor air vent, the indoor air is connected to the air inlet of the centrifugal fan through the first reversing channel. After being output by the centrifugal fan, it enters the second reversing channel and passes through the second air vent to complete the exhaust of indoor air.

[0009] This reversing structure design utilizes the first and second baffles to regulate the first and second reversing channels respectively, cleverly achieving the switching of air intake and exhaust modes. It eliminates the need to replace the reversing mechanism, making it convenient to use. By changing the rotation position of the baffles, the airflow path is switched, improving the overall reversing efficiency.

[0010] The first and second baffles can close off irrelevant channels at each rotation position, ensuring that the airflow in different modes flows completely along the predetermined path, avoiding performance loss caused by airflow mixing. The cross design of the first and second reversing channels makes the airflow switching streamline more reasonable, effectively avoiding the generation of turbulence and resistance. With the above settings, the fresh air mode can be quickly switched to the exhaust mode, meeting the diverse needs of users and improving the user experience.

[0011] Preferably, as an improvement, both the first air supply channel and the second air supply channel are provided with limiting ribs, which limit the first baffle and the second baffle respectively.

[0012] The beneficial effects are: the limiting rib can precisely limit the rotation range of the baffle, ensuring that the first baffle and the second baffle are accurately in place at each rotation position, avoiding air leakage caused by excessive rotation of the baffle, and ensuring the complete closure of the airflow channel in different modes.

[0013] Preferably, as an improvement, it also includes a cover plate, on which both the indoor and outdoor air vents are fixed, and the cover plate has two ventilation holes that communicate with the indoor and outdoor air vents respectively.

[0014] The beneficial effects are as follows: by setting up a cover plate to shield the internal mechanism of the reversing structure, dust and impurities are prevented from entering and affecting the operation of the components. After the cover plate is fixed, the connection between all air outlets and channels is more stable, which helps to improve airflow and reversing efficiency. It also makes it easier to quickly install the entire structure onto the air conditioner casing or other mechanisms through the cover plate, reducing installation steps.

[0015] Preferably, as an improvement, the centrifugal fan includes a housing and a centrifugal motor and centrifugal fan blades disposed within the housing, the centrifugal fan blades being mounted on the rotational output end of the centrifugal motor.

[0016] The beneficial effects are: the housing provides support and protection for the centrifugal motor and fan blades, while guiding the airflow, reducing turbulence, and improving the airflow delivery efficiency.

[0017] Preferably, as an improvement, the first reversing channel and the second reversing channel intersect in an X-shape.

[0018] The beneficial effects are: the X-shaped layout overlaps the first and second reversing channels, effectively saving space and making it easy to install in small air conditioners. At the same time, the X-shape ensures that the first and second reversing channels have a certain angle with the channels on both sides, which can guide the airflow direction.

[0019] An air conditioner is characterized in that it includes the aforementioned air inlet / outlet reversing structure, an air inlet and an outlet are provided at the top of the air conditioner, the air inlet / outlet reversing structure is located at the bottom of the air conditioner, and a duct is also provided, one end of the duct is connected to an outdoor air outlet, and the other end is connected to the outside. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0021] Figure 2 A schematic diagram of the fresh air flow direction is introduced for this embodiment of the utility model;

[0022] Figure 3 This is a schematic diagram of the exhaust airflow direction in an embodiment of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the air conditioner according to an embodiment of the present utility model.

[0024] The reference numerals in the accompanying drawings include: first air supply channel 1, second air supply channel 2, indoor air outlet 3, outdoor air outlet 4, first reversing channel 5, second reversing channel 6, first baffle 7, second baffle 8, limiting rib 9, cover plate 10, centrifugal motor 11, centrifugal fan blade 12, housing 13, air conditioning inlet 14, and air conditioning outlet 15. Detailed Implementation

[0025] The following detailed description is provided through specific implementation methods and examples:

[0026] The preferred embodiments of this utility model are basically as shown in the appendix. Figure 1-4 As shown, Figure 1 The air inlet / outlet reversing structure shown includes a centrifugal fan and a first air supply channel 1 and a second air supply channel 2 arranged in parallel. One end of the first air supply channel 1 is an indoor air outlet 3 connected to the room, and the other end is connected to the air outlet of the centrifugal fan. One end of the second air supply channel 2 is an outdoor air outlet 4 connected to the outside, and the other end is connected to the air inlet of the centrifugal fan. It also includes a first reversing channel 5 and a second reversing channel 6 arranged in a cross configuration. Both ends of the first reversing channel 5 and the second reversing channel 6 are connected to the first air supply channel 1 and the second air supply channel 2, respectively. The side of the first reversing channel 5 closest to the first air supply channel 1 is the air inlet. The air inlet of the first reversing channel 5 is rotatably equipped with a first baffle 7. The first baffle 7 is provided with… The first rotating position has two rotation positions. The first rotating position closes the air inlet of the first reversing channel 5 and connects the indoor air outlet 3 to the centrifugal fan outlet. The second rotating position closes the first air supply channel 1 and connects the indoor air outlet 3 to the centrifugal fan inlet via the first reversing channel 5. The second reversing channel 6 has an air outlet on the side closest to the second air supply channel 2. The air outlet of the second reversing channel 6 is equipped with a second baffle 8, which has a first rotating position and a second rotating position. The first rotating position closes the air outlet of the second reversing channel 6 and connects the outdoor air outlet 4 to the centrifugal fan inlet. The second rotating position closes the second air supply channel 2 and connects the outdoor air outlet 4 to the centrifugal fan outlet via the second reversing channel 6. The first reversing channel 5 and the second reversing channel 6 intersect in an X-shape. The X-shaped layout allows the first reversing channel 5 and the second reversing channel 6 to overlap and be arranged in an alternating manner, effectively saving space and facilitating installation in small air conditioners. At the same time, the X-shape also creates an angle between the first reversing channel 5 and the second reversing channel 6 and the channels on both sides, which can guide the airflow direction.

[0027] like Figure 2 and Figure 3 As shown, with the above settings, when entering the fresh air mode, the outdoor air vent 4 serves as the air inlet of the entire structure. The first baffle 7 and the second baffle 8 are both located in the first rotation position. Outdoor air enters the second air supply channel 2 through the outdoor air vent 4 and is sent into the first air supply channel 1 by the centrifugal fan. Fresh air is then introduced into the room from the indoor air vent 3 to form fresh air. When entering the exhaust mode, the first baffle 7 and the second baffle 8 are both located in the second rotation position. The indoor air vent 3 serves as the air inlet of the entire structure. Indoor air enters the first air supply channel 1 through the indoor air vent 3 and then connects with the centrifugal fan air inlet through the first reversing channel 5. After being output by the centrifugal fan, it enters the second reversing channel 6 and passes through the second air vent to complete the exhaust of indoor air.

[0028] This reversing structure design utilizes the first baffle 7 and the second baffle 8 to regulate the first and second reversing channels 6 respectively, cleverly realizing the switching of air intake and exhaust modes. It does not require the replacement of the reversing mechanism and is convenient to use. The airflow path is switched by changing the rotation position of the baffle, which improves the overall reversing efficiency.

[0029] The first and second baffles 8 can close off irrelevant channels in each rotation position, ensuring that the airflow in different modes flows completely along the predetermined path, avoiding performance loss caused by airflow mixing. The cross design of the first reversing channel 5 and the second reversing channel 6 makes the airflow switching streamline more reasonable, effectively avoiding the generation of turbulence and resistance. With the above settings, the fresh air mode can be quickly switched to the exhaust mode, meeting the diverse needs of users and improving the user experience.

[0030] To ensure a simple, reliable, and easy-to-assemble structure, the preferred embodiment of this invention is as follows: both the first air supply channel 1 and the second air supply channel 2 are provided with limiting ribs 9. The limiting ribs 9 limit the extreme rotation positions of the first baffle 7 and the second baffle 8 respectively. The limiting ribs 9 can precisely limit the rotation range of the baffles, ensuring that the first baffle 7 and the second baffle 8 are accurately in place at each rotation position, avoiding air leakage caused by excessive rotation of the baffles, and ensuring complete closure of the airflow channels in different modes.

[0031] To ensure a simple, reliable, and easy-to-assemble structure, the preferred embodiment of this invention includes a cover plate 10. The indoor air vent 3 and the outdoor air vent 4 are both fixed to the cover plate 10 by welding or bolts. The cover plate 10 has two ventilation holes that communicate with the indoor air vent 3 and the outdoor air vent 4 respectively. By setting the cover plate 10, the internal mechanism of the reversing structure is shielded, preventing dust and impurities from entering and affecting the operation of the components. After the cover plate 10 is fixed, the connection between all air vents and channels is more stable, which helps to improve airflow and reversing efficiency. Furthermore, the entire structure can be quickly installed onto the air conditioner casing or other structures via the cover plate 10, reducing installation steps.

[0032] To ensure a simple, reliable, and easy-to-assemble structure, the preferred embodiment of this invention is as follows: the centrifugal fan includes a housing 13 and a centrifugal motor 11 and centrifugal fan blades 12 disposed within the housing 13. The centrifugal fan blades 12 are mounted on the rotation output end of the centrifugal motor 11. The housing 13 provides support and protection for the centrifugal motor 11 and the fan blades, while guiding the airflow, reducing turbulence, and improving the airflow delivery efficiency.

[0033] like Figure 4 An air conditioner is shown, characterized in that: it includes the above-mentioned air inlet and outlet reversing structure, the upper part of the air conditioner is provided with an air inlet 14 and an air outlet 15, the air inlet and outlet reversing structure is provided at the lower part of the air conditioner, and it is also provided with a duct, one end of which is connected to the outdoor air outlet 4 and the other end is connected to the outside.

[0034] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An air inlet / outlet reversing structure, characterized in that: It includes a centrifugal fan and a first air supply channel (1) and a second air supply channel (2) arranged in parallel. One end of the first air supply channel (1) is an indoor air outlet (3) connected to the room, and the other end is connected to the air outlet of the centrifugal fan. The second air supply channel (2) is an outdoor air outlet (4) connected to the outside, and the other end is connected to the air inlet of the centrifugal fan. It also includes a first reversing channel (5) and a second reversing channel (6) arranged in a cross manner. Both ends of the first reversing channel (5) and the second reversing channel (6) are connected to the first air supply channel (1) and the second air supply channel (2) respectively. The first reversing channel (5) has an air inlet on the side near the first air supply channel (1). The air inlet of the first reversing channel (5) is provided with a first baffle (7). The first baffle (7) has a first rotating position and a second rotating position. The first rotating position closes the air inlet of the first reversing channel (5) and connects the indoor air outlet (3) with the centrifugal fan outlet. The second rotating position closes the first air supply channel (1) and connects the indoor air outlet (3) with the centrifugal fan inlet through the first reversing channel (5). The second reversing channel (6) has an air outlet on the side near the second air supply channel (2). The air outlet of the second reversing channel (6) is equipped with a second baffle (8). The second baffle (8) has a first rotating position and a second rotating position. The first rotating position closes the air outlet of the second reversing channel (6) and connects the outdoor air outlet (4) with the air inlet of the centrifugal fan. The second rotating position closes the second air supply channel (2) and connects the outdoor air outlet (4) with the air outlet of the centrifugal fan through the second reversing channel (6).

2. The air inlet / outlet reversing structure according to claim 1, characterized in that: Both the first air supply channel (1) and the second air supply channel (2) are equipped with limiting ribs (9), which limit the first baffle (7) and the second baffle (8) respectively.

3. The inlet / outlet reversing structure according to claim 1, characterized in that: It also includes a cover plate (10), and the indoor air vent (3) and the outdoor air vent (4) are both fixed on the cover plate (10). The cover plate (10) has two ventilation holes that are respectively connected to the indoor air vent (3) and the outdoor air vent (4).

4. The air inlet / outlet reversing structure according to claim 1, characterized in that: The centrifugal fan includes a housing (13) and a centrifugal motor (11) and centrifugal fan blades (12) disposed within the housing (13). The centrifugal fan blades (12) are mounted on the rotation output end of the centrifugal motor (11).

5. The air inlet / outlet reversing structure according to claim 1, characterized in that: The first reversing channel (5) and the second reversing channel (6) intersect in an X shape.

6. An air conditioner, characterized in that: The air conditioner includes the air inlet / outlet reversing structure as described in any one of claims 1-5. The upper part of the air conditioner is provided with an air inlet (14) and an air outlet (15). The air inlet / outlet reversing structure is located at the lower part of the air conditioner. It is also provided with a duct. One end of the duct is connected to the outdoor air outlet (4), and the other end is connected to the outside.

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