Air guide structure, indoor air supply device and air supply method

Abstract

The present invention discloses an air guide structure, an indoor air supply device and an air supply method. The air guide structure comprises a shell having a hollow air guide chamber therein; an air inlet structure arranged on a side wall of the shell for connecting the hollow air guide chamber with outdoor air; and an air outlet structure arranged on the same side as the air inlet structure for connecting the hollow air guide chamber with indoor air. The indoor air supply device provided by the present invention can blow the wind introduced from the outdoors toward the wall by adopting the above-mentioned air guide structure, thereby preventing the wind from blowing directly on the human body, and the wind speed is gentler, thereby improving the comfort of the air outlet of the indoor air supply device and enhancing the user experience.

Description

Technical Field

[0001] The present invention belongs to the technical field of indoor air supply, and in particular, relates to an air guide structure, an indoor air supply device and an air supply method. Background Art

[0002] With the development of economy, people's pursuit of quality of life is also increasing, and the indoor air quality issue has received more and more attention. The poor indoor air circulation is easy to cause the accumulation of dust and dust mites. Regular ventilation can keep the indoor air clean, reduce the accumulation of dust and dust mites in the air, and prevent the breeding of more bacteria. Nowadays, more and more families will choose to use indoor air supply devices to strengthen the flow of indoor and outdoor air, improve indoor air quality, and ensure the quality of life.

[0003] The Chinese patent application number 201811161816.7 discloses a ventilation device, including an air inlet, an air outlet and a connecting pipe connecting the air inlet and the air outlet, the air outlet is provided with a rotatable air outlet member, and the air outlet member includes an air inlet, an air outlet and an air outlet channel connecting the air inlet. Outdoor air enters the connecting pipe through the air inlet, then flows into the air outlet channel through the air inlet, and finally is discharged from the air outlet of the air outlet member to complete the ventilation process.

[0004] The air outlet piece of the ventilation device disclosed in the above application is rotatably arranged at the air outlet, that is, the air outlet of the air outlet piece is directly facing the indoor room. The outdoor air directly blown into the indoor room can easily cause a large change in the indoor temperature. It is difficult to ensure a gentle wind speed. Moreover, when the outdoor air temperature is low, the wind blowing directly onto the human body will affect the user's physical comfort, and the practicality is poor.

[0005] In view of this, the present invention is proposed. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an air guide structure, an indoor air supply device and an air supply method to prevent the wind introduced into the room from directly blowing on the human body. The wind speed of the supply air is softer, which improves the comfort of the air outlet of the indoor air supply device and enhances the user experience.

[0007] In order to solve the above technical problems, the first aspect of the present invention provides an air guide structure for an indoor air supply device, comprising:

[0008] The shell has a hollow air guide chamber inside.

[0009] An air inlet structure, disposed on a side wall of the housing, for connecting the hollow air guide chamber with outdoor air;

[0010] The air outlet structure is arranged on the same side as the air inlet structure, and is used to connect the hollow air guide chamber with the indoor air.

[0011] Furthermore, the housing is a disc-shaped structure with a hollow air guide chamber, and the housing comprises:

[0012] The first air guiding side wall, the air outlet structure is one or more air outlets arranged on the first air guiding side wall.

[0013] Furthermore, the first wind guide side wall comprises:

[0014] The circular plane portion has a straight wall surface that can fit against the wall;

[0015] An annular arc portion is connected to the outer periphery of the circular plane portion and extends from the outer periphery of the circular plane portion in a direction away from the wall;

[0016] The air outlet is arranged on the annular arc surface portion.

[0017] Furthermore, the air inlet structure includes an air inlet opened at the center of the first air guide side wall; the air outlet includes a plurality of groups of air outlet holes arranged on the annular arc surface and surrounding the air inlet at intervals;

[0018] Preferably, each group of air outlet holes includes two rows of air outlet holes arranged linearly;

[0019] More preferably, there are 2-6 air holes in each column.

[0020] Furthermore, the housing further comprises: a second wind guide side wall, arranged opposite to the first wind guide side wall, the second wind guide side wall being a disc-shaped structure with a concave cavity therein;

[0021] The circumferential edge of the second air guiding side wall is connected and fixed to the outer peripheral edge of the annular arc portion of the first air guiding side wall to form the disc-shaped structure with the hollow air guiding chamber therein.

[0022] A second aspect of the present invention provides an indoor air supply device having the above-mentioned air guide structure.

[0023] Furthermore, the wind guide device also includes: an installation tube, one end of which is connected to the air inlet of the wind guide structure, and the other end extends outward to communicate with outdoor air, and a fan is also installed in the wind guide tube.

[0024] Furthermore, the indoor air supply device comprises:

[0025] A first air supply device is used to supply air to the room, and an air supply fan is installed in the air guide tube of the first air supply device;

[0026] The second air supply device is used for discharging air, and an air outlet fan is installed in the air guide tube of the second air supply device.

[0027] A third aspect of the present invention provides an indoor air supply method, which uses the indoor air supply device to supply air indoors.

[0028] Furthermore, it also includes an indoor air detection device for detecting indoor air quality parameters;

[0029] When it is detected that the set threshold is reached, the fan is controlled to start and indoor air is replenished;

[0030] Preferably, the air quality parameter includes oxygen content;

[0031] When it is detected that the indoor oxygen content is lower than the set value, the fan is controlled to start and provide indoor air supply;

[0032] When it is detected that the indoor oxygen content is greater than or equal to the set value, the fan is controlled to shut down and the indoor air supply is stopped.

[0033] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art.

[0034] The present invention uses the wind guide structure to blow the introduced wind toward the wall through the air outlet, so as to avoid direct blowing onto the human body, thereby improving the user experience; the wind passing through the wind guide structure has a reduced wind speed and is softer, and with the guidance effect of the wall, the mixing process with the indoor air is smoother, and the phenomenon of sudden change in temperature does not occur, thereby improving the physical comfort in the room; the wind entering the room can flow into the corners of the room better through the guidance of the wall, and the air replenishment effect is better.

[0035] The indoor air supply device of the present invention has a simple structure, lower production cost, can be installed in close contact with the wall, is easy and convenient to install, has strong stability, occupies little space, is highly practical, and the installation tube is set in the wall, which makes less noise. Outdoor air is introduced into the room through the first air supply device, and is fully mixed with the indoor air under the cooperation of the air guide structure and the wall and discharged to the outside through the second air supply device, which effectively reduces impurities such as dust and dust mites in the indoor air. Under the joint action of the air inlet fan and the air outlet fan, the air supply process is more efficient, which meets the needs of modern families.

[0036] The present invention detects the indoor air quality and automatically controls the start and stop of the indoor air supply device according to the detection result, so that the indoor air quality can be kept in a good state without manual operation, with a higher degree of automation and a better user experience.

[0037] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the accompanying drawings:

[0039] Figure 1 is a schematic diagram of an air guide structure in one embodiment of the present invention;

[0040] Figure 2 is a cross-sectional view of an air guide structure in one embodiment of the present invention;

[0041] Figure 3 is a schematic structural diagram of an indoor air supply device in one embodiment of the present invention;

[0042] Figure 4 is a schematic structural diagram of an indoor air supply device in another perspective in one embodiment of the present invention;

[0043] Figure 5 is a cross-sectional view of an indoor air supply device in one embodiment of the present invention;

[0044] Figure 6 is a schematic diagram of an indoor air supply device installed on a wall in one embodiment of the present invention;

[0045] Figure 7 is a schematic diagram of an indoor air supply method in one embodiment of the present invention;

[0046] In the figure: 1, shell; 101, first air guide side wall; 101a, circular plane portion; 101b, annular arc portion; 102, second air guide side wall; 2, air outlet; 3, air inlet; 4, installation tube; 5, wall.

[0047] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0049] In the description of the present invention, it should be noted that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0050] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] The present invention will be further described in detail below with reference to the embodiments.

[0052] like Figures 1 to 7 As shown, the present invention provides an air guide structure, an indoor air supply device and an air supply method, so that outdoor air can enter the room smoothly and softly, avoid blowing directly onto the human body, form natural convection with the indoor air, mix more fully, and have a better air supply effect, without causing the phenomenon of sudden changes in temperature, thereby improving the user experience.

[0053] Embodiment 1

[0054] like Figures 1 to 6 As shown, the air guide structure for the indoor air replenishment device described in this embodiment includes a shell 1 with a hollow air guide chamber therein, and an air inlet structure is provided on the side wall of the shell 1 close to the wall 5, which is used to connect the hollow air guide chamber with the outdoor air, and an air outlet structure is provided on the same side of the shell 1 and the air inlet structure, which is used to connect the hollow air guide chamber with the indoor air, and the air outlet direction of the air outlet structure is toward the wall 5.

[0055] In this solution, outdoor air enters the air guide chamber of the shell 1 through the air inlet structure, is blown to the wall 5 through the air outlet structure, and then slowly flows into the room, making the process of wind entering the room softer, avoiding the wind blowing directly on the human body, and improving the user experience; the wind entering the room can better flow into the corners that are not easily blown directly under the guidance of the wall 5, and the air supply effect is better; under the joint action of the air guide structure and the wall 5, the wind mixes with the indoor air more slowly, making the indoor temperature change more stable, preventing the indoor temperature from changing too quickly and too much, and improving the practicality of the indoor air supply device.

[0056] like Figures 1 to 3As shown, the shell 1 is a disc-shaped structure with a hollow air guide chamber therein. The shell 1 includes a first air guide side wall 101 located close to the wall 5 . The air outlet structure is one or more air outlets arranged on the first air guide side wall 101 .

[0057] Specifically, the first air-guiding side wall 101 includes a circular plane portion 101a and an annular arc surface portion 101b; wherein the circular plane portion 101a has a straight wall surface that can fit with the wall 5, and the annular arc surface portion 101b is connected to the outer periphery of the circular plane portion 101a, and bends and extends from the outer periphery of the circular plane portion 101a in a direction away from the wall 5, and the air outlet is opened on the annular arc surface portion 101b.

[0058] The circular plane portion 101a can make the air guide structure fit better with the wall 5, occupy less space, and after installation, it is more stable under the support of the wall 5. The air outlet is opened on the annular arc surface portion 101b, which can make the wind blow to the wall 5 at a certain angle, effectively reducing the impact of the wind blowing directly, and after the wind blows to the wall 5 through the air outlet, it spreads around along the wall 5 with the air guide structure as the center under the action of inertia, the process is more gentle, and it is mixed more fully with the indoor air, and the air replenishment effect is better.

[0059] In another solution of this embodiment, the first wind guide side wall 101 is a full arc surface structure, and the air outlet holes 2 are arranged at intervals on the arc surface structure. In this solution, the wind entering the wind guide chamber is guided to the wall 5 at a faster speed, and the wind guide efficiency is higher.

[0060] In this embodiment, the air inlet structure includes an air inlet 3 opened at the center position of the first air guide side wall 101, so that the wind entering the air guide structure can diffuse outward from the center of the air guide structure, filling the air guide chamber more quickly and evenly, thereby improving the air guide efficiency.

[0061] More specifically, Figure 2 As shown, an air inlet 3 is formed by extending inwardly for a distance along the center position of the first air guiding side wall 101. The inward extension of the air inlet 3 can make the introduced wind fill the air guiding chamber faster, further improving the air guiding efficiency.

[0062] Furthermore, the air outlet includes a plurality of groups of air outlet holes 2 which are arranged at intervals on the annular arc surface portion 101b and around the air inlet 3, which can ensure that the wind discharged from the air guide device is dispersed more evenly, and the dispersed wind is mixed more completely with the indoor air, resulting in a better air replenishment effect.

[0063] Preferably, each group of air outlet holes 2 includes two rows of air outlet holes 2 arranged linearly;

[0064] More preferably, there are 2-6 air holes 2 in each column.

[0065] More preferably, Figures 1 to 4 As shown in FIG, two rows of linearly arranged air outlet holes 2 are respectively composed of 3 and 4 air outlet holes.

[0066] like Figure 3 As shown, the annular arc surface 101b is streamlined, so that the wind passing through the annular arc surface 101b is subjected to less wind resistance and has a higher wind guiding efficiency. Furthermore, multiple groups of air outlet holes 2 are arranged in a spiral shape at intervals on the annular arc surface structure. Under the joint action of the spirally arranged air outlet holes 2 and the annular arc surface structure, the wind guided out of the air guiding chamber is blown onto the wall 5 in a corresponding spiral scattered shape, and the scattered wind is more fully mixed with the original air in the room, and the air replenishment effect is better.

[0067] In this embodiment, the housing 1 further includes a second wind-guiding side wall 102, which is arranged opposite to the first wind-guiding side wall 101. The second wind-guiding side wall 102 is a disc-shaped structure with a concave cavity inside. The circumferential edge of the second wind-guiding side wall 102 is connected and fixed to the outer peripheral edge of the annular arc surface 101b of the first wind-guiding side wall 101, forming the disc-shaped structure with a hollow wind-guiding chamber inside. The wind enters the wind-guiding chamber and fills the wind-guiding chamber. The wind passes through the guidance of the second wind-guiding side wall 102, flows to the annular arc surface 101b through the edge of the second wind-guiding side wall 102, and is discharged from the air outlet 2 to complete the wind-guiding process.

[0068] Specifically, Figure 1 , Figure 2 As shown, the shape of the second wind-guiding side wall 102 is a disc-shaped structure similar to the first wind-guiding side wall 101, and also includes a disc-shaped plane and a streamlined curved surface structure. The diameter of the second wind-guiding side wall 102 and the first wind-guiding side wall 101 are matched at the connection point to form a complete whole. The inner side of the streamlined curved surface structure is a smooth and complete structure, so that the wind is subjected to less wind resistance on the streamlined curved surface structure, and the wind is guided out of the wind guide chamber with higher efficiency. The outer wall of the second wind-guiding side wall 102 faces the indoor direction. The combination of the streamlined structure and the disc-shaped structure makes the overall wind-guiding structure more beautiful and better integrated into the indoor environment.

[0069] Specifically, the first wind guiding side wall 101 and the second wind guiding side wall 102 are an integrated structure, the structural design is simpler, and it is ensured that the wind entering the wind guiding chamber can only be discharged from the air outlet 2, thereby improving the wind guiding effect of the wind guiding device.

[0070] In another solution, the first air guide side wall 101 and the second air guide side wall 102 are connected in a detachable manner by snaps or threads, and a sealing structure is provided at the connection to ensure the sealing between the first air guide side wall 101 and the second air guide side wall 102. The detachable connection of the first air guide side wall 101 and the second air guide side wall 102 can, on the one hand, make the installation process of the air guide structure simpler and more convenient, and on the other hand, the disassembled air guide chamber and the air outlet 2 are easier to perform daily cleaning and maintenance operations, and are more practical.

[0071] Preferably, the sealing structure can adopt an annular sealing ring made of rubber material, which is arranged on the inner wall at the junction of the first air-guiding side wall 101 and the second air-guiding side wall 102. When the first air-guiding side wall 101 and the second air-guiding side wall 102 are connected by snapping or threading, the sealing rings on the inner walls on both sides are squeezed and deformed against each other. The tightly fitting sealing ring ensures the sealing effect at the connection between the first air-guiding side wall 101 and the second air-guiding side wall 102, so that the wind entering the air-guiding chamber can only be discharged through the air outlet 2, thereby improving the air-guiding effect.

[0072] Furthermore, a filtering structure is provided in the air guide chamber, and outdoor air enters the air guide chamber from the air inlet 3, and after passing through the filtering structure, cleaner air enters the room from the air outlet.

[0073] Preferably, the filter structure is an air filter, which can effectively prevent dust and bacteria in the outdoor air from entering the room, and introduce clean fresh air to ensure the indoor air quality. The detachable connection between the first air guide side wall 101 and the second air guide side wall 102 makes the replacement and cleaning of the air filter easier and more convenient, so that the air guide structure can ensure the supply of clean air for a longer period of time and more stably.

[0074] More preferably, the air filter is detachably arranged at the air inlet 3, and the air inlet 3 has a groove on the inner periphery, and the outer periphery of the air filter is provided with a convex edge matching the groove. Under the action of the blowing force given by the air flowing into the air inlet 3, the air filter is firmly pressed against the air inlet 3 to filter out dust and other impurities in the air.

[0075] Embodiment 2

[0076] like Figures 3 to 6 As shown, this embodiment provides an indoor air supply device, including the air guide structure described in the above embodiment. The air passes through the indoor air supply device, is guided out from the air outlet 2 and blown toward the wall 5, avoiding direct blowing on the human body, thereby improving the comfort during use; a large amount of fresh and clean outdoor air is added to the room, thereby improving the indoor air quality.

[0077] In this embodiment, the indoor air supply device also includes an installation tube 4, one end of which is connected to the air inlet 3 of the air guide structure, and the other end extends outward to communicate with the outdoor air. A fan is also installed in the installation tube 4 to improve the air supply effect of the indoor air supply device.

[0078] Specifically, the installation tube 4 is set through the wall 5, and the end connected to the outdoor air extends outward for a distance, and a baffle is set at the opening. The baffle closes the opening under normal conditions to prevent rainwater and debris from entering the installation tube 4, thereby ensuring the sealing of the indoor space under normal conditions; when the indoor air supply device is running, the baffle opens the opening, so that the outside air can flow smoothly into the installation tube 4 and be introduced into the room through the air guide device.

[0079] In another scheme of this embodiment, the mounting tube 4 is configured as a retractable structure, and the length of the mounting tube 4 is adjusted by retracting the inner and outer sleeves, so that it can better adapt to installation in walls of different thicknesses, thereby improving the practicality of the indoor air supply device.

[0080] Specifically, the indoor air supply device includes: a first air supply device and a second air supply device. The air guide tube of the first air supply device is equipped with an air inlet fan for supplying air into the room. The air guide tube of the second air supply device is equipped with an air outlet fan for exhausting the indoor air to the outside.

[0081] In a preferred scheme of the present embodiment, the first air supply device and the second air supply device are respectively installed on two opposite walls 5 in the room. The air entering from the outside passes through the air guide chamber and is dispersed along the wall 5 with the first air supply device as the center. After dispersion, it is fully mixed with the indoor air. Part of the mixed air is drawn to the outside along the wall 5 with the second air supply device as the center. The indoor and outdoor air form a complete circulating air path between the two walls 5, ensuring the fluidity between the indoor air and the outdoor air, reducing the accumulation of impurities such as dust and dust mites in the indoor air, improving the indoor air quality, and enhancing the user's comfort.

[0082] Preferably, the air inlet fan used in this embodiment is a strong blower fan, and the air outlet fan is a strong extraction fan, which increases the speed of outdoor air introduction and indoor air extraction, greatly improving the working efficiency of the indoor air supply device.

[0083] In another embodiment, the air inlet fan and the air outlet fan use low-noise centrifugal fans, which can not only ensure that the overall noise of the indoor air supply device is low and does not affect the user experience, but also provide sufficient wind force and suction force without affecting the air supply efficiency of the indoor air supply device.

[0084] Embodiment 3

[0085] This embodiment provides an indoor air supply method, which controls the indoor air supply device in the above embodiment to supply air indoors.

[0086] like Figure 7 As shown, in this embodiment, the indoor air supply device also includes an indoor air detection device for detecting the indoor air quality;

[0087] When it is detected that the set threshold is reached, the fan is controlled to start and indoor air is replenished;

[0088] The indoor air is detected in real time through the indoor air detection device. When the detection reaches the set threshold, the air supply device is controlled to open, and the outdoor air is introduced into the room, mixed indoors and finally exported to the outside through the second air supply device, so as to ensure the circulation of indoor air and keep the indoor air quality in a good state.

[0089] Preferably, the air inlet fan and the air outlet fan are both variable frequency fans, and the wind speed is divided into multiple gears, which are adjusted according to different levels of indoor air quality. When the indoor air quality is poor, the controller controls the wind speed to increase, so that the indoor air supply device can supply indoor air with higher efficiency, so that the indoor air quality can reach a better state as soon as possible.

[0090] Among the many air quality parameters, oxygen content is particularly important, especially in winter. Due to the difference between indoor and outdoor temperatures, many users do not ventilate the indoor environment regularly, which can easily lead to a decrease in the oxygen content in the indoor air.

[0091] In a preferred scheme of this embodiment, the air quality parameters include oxygen content; when it is detected that the indoor oxygen content is lower than a set value, the fan is controlled to start and indoor air supply is carried out; when it is detected that the indoor oxygen content is greater than or equal to the set value, the fan is controlled to shut down and indoor air supply is stopped.

[0092] More preferably, an oxygen content detector is provided outside the air supply device. After the device is started, the oxygen content detector monitors the indoor oxygen content concentration in real time and feeds back the signal to the controller. The controller receives the signal and makes a judgment on the signal. When the oxygen content concentration is less than or equal to a preset value, the controller controls the air inlet fan and the air outlet fan to start and automatically supply air to the room; when the monitored oxygen content concentration is greater than the preset value, the air inlet fan and the air outlet fan are controlled to be turned off to ensure that the indoor oxygen content concentration is always greater than the preset value.

[0093] More preferably, when the oxygen content concentration is less than or equal to 20%, the controller controls the fan to start, and when the oxygen content is greater than 20% and higher than a preset value by a certain amount, for example, 21.5%, the controller controls the fan to shut down. This setting can avoid the controller frequently controlling the fan to turn on and off when the indoor oxygen content concentration is around 20%. The design is more user-friendly and can keep the indoor oxygen content concentration within a good range.

[0094] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. An air guide structure for an indoor air supply device, characterized in that: include: The shell has a hollow air guide chamber inside. An air inlet structure, disposed on a side wall of the housing, for connecting the hollow air guide chamber with outdoor air; An air outlet structure is arranged on the same side as the air inlet structure and is used to connect the hollow air guide chamber with indoor air; The housing is a disc-shaped structure with a hollow air guide chamber inside, and the housing comprises: A first air guide side wall, wherein the air outlet structure is one or more air outlets arranged on the first air guide side wall; A second air guiding side wall, arranged opposite to the first air guiding side wall; The first wind guiding side wall comprises: The circular plane portion has a straight wall surface that can fit against the wall; An annular arc portion is connected to the outer periphery of the circular plane portion and extends from the outer periphery of the circular plane portion in a direction away from the wall; The air outlet is arranged on the annular arc surface portion.

2. The air guide structure according to claim 1, characterized in that: The air inlet structure includes an air inlet opened at the center of the first air guide side wall; The air outlet comprises a plurality of groups of air outlet holes which are arranged at intervals on the annular arc surface portion and surround the air inlet.

3. The air guide structure according to claim 2, characterized in that: Each group of air outlet holes includes two rows of air outlet holes arranged linearly.

4. The air guide structure according to claim 3, characterized in that: There are 2 to 6 air holes in each row.

5. The air guide structure according to any one of claims 1 to 4, characterized in that: The second air guide side wall is a disc-shaped structure with a concave cavity inside; The circumferential edge of the second air guiding side wall is connected and fixed to the outer peripheral edge of the annular arc portion of the first air guiding side wall to form the disc-shaped structure with the hollow air guiding chamber therein.

6. An indoor air supply device, characterized in that: It comprises the wind guiding structure described in any one of claims 1 to 5.

7. The indoor air supply device according to claim 6, characterized in that: Also includes: The installation cylinder has one end connected to the air inlet of the air guide structure and the other end extending outward to communicate with the outdoor air. A fan is also installed in the installation cylinder.

8. The indoor air supply device according to claim 7, characterized in that: The air supply device comprises: A first air supply device is used to supply air to the room, and an air supply fan is installed in the installation cylinder of the first air supply device; The second air supply device is used for discharging air, and an air outlet fan is installed in the installation cylinder of the second air supply device.

9. An indoor air supply method, using the indoor air supply device described in any one of claims 6 to 8 to supply indoor air.

10. The air supply method according to claim 9, characterized in that: The indoor air supply device also includes an indoor air detection device for detecting indoor air quality parameters; When it is detected that the set threshold is reached, the fan is controlled to start and provide indoor air supply.

11. The air supply method according to claim 10, characterized in that: Air quality parameters include oxygen content; When it is detected that the indoor oxygen content is lower than the set value, the fan is controlled to start and provide indoor air supply; When it is detected that the indoor oxygen content is greater than or equal to the set value, the fan is controlled to shut down and the indoor air supply is stopped.

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