阅读说明：本技术 一种导风结构、室内补风装置及补风方法 (Wind guide structure, indoor air supplement device and air supplement method ) 是由 李键 刘学 于 2021-07-09 设计创作，主要内容包括：本发明公开了一种导风结构、室内补风装置及补风方法,所述导风结构包括壳体,内具中空导风腔室；进风结构,设于壳体的一侧壁上,用于连通所述中空导风腔室与室外空气；出风结构,与所述进风结构同侧设置,用于连通所述中空导风腔室与室内空气。本发明提供的室内补风装置通过采用上述导风结构的设置,可将由室外导入的风吹向墙体,避免风直吹人体,且风速更加柔和,提高了室内补风装置出风的舒适性,提升用户的使用体验。(The invention discloses an air guide structure, an indoor air supplement device and an air supplement method, wherein the air guide structure comprises a shell, a hollow air guide chamber is arranged in the shell; the air inlet structure is arranged on one side wall of the shell and is used for communicating the hollow air guide cavity with outdoor air; the air outlet structure is arranged at the same side as the air inlet structure and is used for communicating the hollow air guide chamber with indoor air. By adopting the arrangement of the air guide structure, the indoor air supplement device provided by the invention can blow the air led from the outdoor to the wall body, so that the air is prevented from directly blowing the human body, the air speed is softer, the air outlet comfort of the indoor air supplement device is improved, and the use experience of a user is improved.)

1. The utility model provides an indoor mend wind guide structure for device which characterized in that includes:

The shell is internally provided with a hollow air guide chamber,

the air inlet structure is arranged on one side wall of the shell and is used for communicating the hollow air guide cavity with outdoor air;

the air outlet structure is arranged at the same side as the air inlet structure and is used for communicating the hollow air guide chamber with indoor air.

2. The air guide structure of claim 1, wherein the casing is a disc-shaped structure with a hollow air guide chamber therein, and the casing comprises:

the air outlet structure is arranged at one or more air outlets on the first air guide side wall.

3. The air guide structure according to claim 2, wherein the first air guide sidewall includes:

a circular plane part which is provided with a flat wall surface that can be jointed with the wall body;

the annular arc surface part is connected to the periphery of the circular plane part and extends from the peripheral edge of the circular plane part to the direction far away from the wall body in a bending way;

the air outlet is arranged on the annular cambered surface portion.

4. The air guide structure according to claim 3, wherein: the air inlet structure comprises an air inlet arranged 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 on the annular cambered surface part at intervals and surround the air inlet;

Preferably, each group of air outlet holes comprises two rows of air outlet holes which are linearly arranged;

more preferably, the number of the air holes in each list is 2-6.

5. The reversing air guiding structure of claim 2, wherein the housing further comprises: the second air guide side wall is arranged opposite to the first air guide side wall and is of a disc-shaped structure with a concave cavity inside;

the circumferential edge of the second air guide side wall is fixedly connected with the peripheral edge of the annular cambered surface part of the first air guide side wall to form a disc-shaped structure with a hollow air guide cavity inside.

6. An indoor air supplement device, comprising the air guide structure according to any one of claims 1 to 5.

7. An indoor air supplement device according to claim 6, further comprising:

and one end of the mounting cylinder is connected with an air inlet of the air guide structure, the other end of the mounting cylinder extends outwards to be communicated with outdoor air, and a fan is further mounted in the air guide cylinder.

8. An indoor air supplement device according to claim 7, characterized in that the air supplement device comprises:

the first air supplement device is used for supplying air to the indoor space, and an air inlet fan is arranged in an air guide cylinder of the first air supplement device;

and the second air supplementing device is used for air outlet, and an air outlet fan is arranged in an air guide cylinder of the second air supplementing device.

9. An indoor air supplementing method, wherein the indoor air supplementing device of claim 7 or 8 is adopted to supplement air indoors.

10. The method of supplementing air according to claim 9, wherein said indoor air supplementing device further comprises an indoor air detecting device for detecting an indoor air quality parameter;

when the preset threshold is reached, controlling the fan to start to supplement the indoor air;

preferably, the air quality parameter comprises an oxygen content;

when the indoor oxygen content value is detected to be lower than a set value, controlling a fan to start, and performing indoor air supplement;

and when the indoor oxygen content value is detected to be larger than or equal to the set value, controlling the fan to be closed, and stopping indoor air supplement.

Technical Field

The invention belongs to the technical field of indoor air supplement, and particularly relates to an air guide structure, an indoor air supplement device and an air supplement method.

Background

With the development of economy, the pursuit of people to the quality of life also promotes gradually, and indoor air quality problem has received more and more concern, and indoor air circulation nature is poor, produces the pile up of dust and dust mite etc. very easily, and regular ventilation can keep indoor air's cleanliness factor, reduces the pile up of dust and dust mite in the air, prevents the breed of more bacterium. More and more modern families can choose to adopt indoor air supplement device to strengthen the flow of indoor and outdoor air, promote indoor air quality, guarantee the quality of life.

Chinese patent application No. 201811161816.7 discloses an air interchanger, which comprises an air inlet, an air outlet and a communicating pipe for communicating the air inlet and the air outlet, wherein the air outlet is provided with a rotatable air outlet member, and the air outlet member comprises an air inlet, an air outlet and an air outlet channel communicated with the air inlet. Outdoor air enters the communicating pipeline through the air inlet, flows into the air outlet channel through the air inlet, and is finally discharged from the air outlet of the air outlet piece, and the air exchange process is completed.

The rotatable setting of the breather air-out piece that the above-mentioned application was disclosed is at the air outlet, and the gas outlet of air-out piece is direct towards indoorly promptly, and outdoor air is direct to be insufflated indoor temperature variation that leads to indoorly easily is great, and the wind speed of hardly guaranteeing the air-out is soft to when outdoor air temperature is lower, directly blow the body and can influence user's body and feel the comfort level, the practicality is relatively poor.

The present invention has been made in view of this situation.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects of the prior art and provide the air guide structure, the indoor air supplement device and the air supplement method, so that the air guided into the room is prevented from directly blowing to a human body, the air speed of the air supplement is softer, the air outlet comfort of the indoor air supplement device is improved, and the use feeling of a user is improved.

In order to solve the above technical problems, a first aspect of the present invention provides an air guide structure for an indoor air supplement device, including:

the shell is internally provided with a hollow air guide chamber,

the air inlet structure is arranged on one side wall of the shell and is used for communicating the hollow air guide cavity with outdoor air;

the air outlet structure is arranged at the same side as the air inlet structure and is used for communicating the hollow air guide chamber with indoor air.

Further, the casing is the disc-shaped structure of interior cavity wind-guiding cavity, the casing includes:

the air outlet structure is arranged at one or more air outlets on the first air guide side wall.

Further, the first wind guiding sidewall includes:

a circular plane part which is provided with a flat wall surface that can be jointed with the wall body;

the annular arc surface part is connected to the periphery of the circular plane part and extends from the peripheral edge of the circular plane part to the direction far away from the wall body in a bending way;

the air outlet is arranged on the annular cambered surface portion.

Furthermore, the air inlet structure comprises an air inlet arranged 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 on the annular cambered surface part at intervals and are arranged around the air inlet;

Preferably, each group of air outlet holes comprises two rows of air outlet holes which are linearly arranged;

more preferably, the number of the air holes in each list is 2-6.

Further, the housing further comprises: the second air guide side wall is arranged opposite to the first air guide side wall and is of a disc-shaped structure with a concave cavity inside;

the circumferential edge of the second air guide side wall is fixedly connected with the peripheral edge of the annular cambered surface part of the first air guide side wall to form a disc-shaped structure with a hollow air guide cavity inside.

The invention provides an indoor air supplement device, which is provided with the air guide structure.

Further, the air guiding device further includes: and one end of the mounting cylinder is connected with an air inlet of the air guide structure, the other end of the mounting cylinder extends outwards to be communicated with outdoor air, and a fan is further mounted in the air guide cylinder.

Further, the indoor air supplement device includes:

the first air supplement device is used for supplying air to the indoor space, and an air inlet fan is arranged in an air guide cylinder of the first air supplement device;

and the second air supplementing device is used for air outlet, and an air outlet fan is arranged in an air guide cylinder of the second air supplementing device.

The third aspect of the invention provides an indoor air supplementing method, which adopts the indoor air supplementing device to supplement air indoors.

Further, the indoor air detection device is used for detecting indoor air quality parameters;

when the preset threshold is reached, controlling the fan to start to supplement the indoor air;

preferably, the air quality parameter comprises an oxygen content;

when the indoor oxygen content value is detected to be lower than a set value, controlling a fan to start, and performing indoor air supplement;

and when the indoor oxygen content value is detected to be larger than or equal to the set value, controlling the fan to be closed, and stopping indoor air supplement.

After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects.

According to the invention, the air guide structure is used for blowing the introduced air to the wall body through the air outlet, so that the air is prevented from directly blowing to a human body, and the use experience of a user is improved; the wind passing through the wind guide structure is reduced in wind speed and is softer, the mixing process with indoor air is smoother under the cooperation of the flow guide effect of the wall, the phenomenon of sudden cooling and sudden heating cannot occur, and the body feeling comfort level in a room is improved; the wind entering the room can better flow into the corners of the room through the diversion of the wall body, and the wind supplementing effect is better.

The indoor air supplement device is simple in structure, lower in production cost, simple and convenient to install, strong in stability, small in occupied space and strong in practicability, and the installation cylinder is arranged in the wall body, so that noise is lower. The air guide device is characterized in that the outdoor air is guided into the room through the first air supplementing device, the air guide structure and the wall are matched, the indoor air is fully mixed and is discharged outdoors through the second air supplementing device, impurities such as dust and dust mites in the indoor air are effectively reduced, the air supplementing process efficiency is higher under the combined action of the air inlet fan and the air outlet fan, and the requirements of modern families are met.

According to the invention, the indoor air quality is detected, the starting and the closing of the indoor air supplement device are automatically controlled according to the detection result, the indoor air quality can be always kept in a good state without manual operation, the automation degree is higher, and the user experience is higher.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

fig. 1 is a schematic view of an air guide structure according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of a wind guide structure according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of an indoor air supplement device according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of an indoor air supplement device at another view angle according to an embodiment of the present invention;

FIG. 5 is a cross-sectional view of an indoor air supplement device according to an embodiment of the present invention;

FIG. 6 is a schematic view of an indoor air supplement device installed on a wall according to an embodiment of the present invention;

FIG. 7 is a schematic view of an indoor air supplement method according to an embodiment of the present invention;

in the figure: 1. a housing; 101. a first air guiding side wall; 101a, a circular planar portion; 101b, an annular cambered surface portion; 102. a second air guiding side wall; 2. an air outlet; 3. an air inlet; 4. mounting the cylinder; 5. a wall body.

It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.

Detailed Description

In order to make the objects, 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 with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention will be described in further detail with reference to examples.

As shown in fig. 1 to 7, the present invention provides an air guide structure, an indoor air supplement device and an air supplement method, so that outdoor air can smoothly and softly enter the room, and is prevented from directly blowing to the human body, natural convection is formed between the outdoor air and the indoor air, mixing is more sufficient, the air supplement effect is better, the occurrence of sudden cold and sudden heat is avoided, and the use experience of users is improved.

Example one

As shown in fig. 1 to 6, the air guide structure for the indoor air supplement device described in this embodiment includes a casing 1 having a hollow air guide cavity therein, and an air inlet structure is provided on a side wall of the casing 1 near the wall 5 side for communicating the hollow air guide cavity with the outdoor air, the casing 1 is provided with an air outlet structure on the same side as the air inlet structure for communicating the hollow air guide cavity with the indoor air, and the air outlet direction of the air outlet structure faces the wall 5.

In the scheme, outdoor air enters the air guide cavity 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, so that the process of entering the room is softer, the direct blowing of the air to a human body is avoided, and the use feeling of a user is improved; the wind entering the room can better flow into the corner which is not easy to be directly blown under the flow guiding effect of the wall body 5, and the wind supplementing effect is better; wind is under the combined action of wind-guiding structure and wall body 5, and is gentler with indoor air mixing process, makes indoor temperature variation more steady, prevents that indoor temperature variation is too big at the excessive speed, improves indoor air supplement device's practicality.

As shown in fig. 1 to 3, the casing 1 is a disc-shaped structure having a hollow air guiding chamber therein, the casing 1 includes a first air guiding sidewall 101 located at a side close to the wall 5, and the air outlet structure is one or more air outlets disposed on the first air guiding sidewall 101.

Specifically, the first air guiding sidewall 101 includes a circular planar portion 101a and an annular arc portion 101 b; circular plane portion 101a has the straight wall face that can laminate mutually with wall 5, and annular cambered surface portion 101b is connected circular plane portion 101 a's periphery is from circular plane portion 101 a's peripheral edge to the crooked extension of the direction of keeping away from wall 5, the air outlet is seted up on the annular cambered surface portion 101 b.

Wherein, circular plane portion 101a can make wind-guiding structure and wall body 5 have better laminating, and occupation space is littleer to after the installation under wall body 5's support, the steadiness is better. The air outlet is seted up and can be made wind blow wall body 5 with certain inclination on annular cambered surface portion 101b, the effectual impulsive force that directly blows that has reduced wind to wind blows wall body 5 back via the air outlet under inertial effect, uses wind-guiding structure as the center along wall body 5 and scatters all around, and the process is more mild, and is more abundant with indoor air mixing, and the benefit wind effect is better.

In another scheme of this embodiment, the first air guiding sidewall 101 has a full arc structure, and the air outlet holes 2 are arranged at intervals on the arc structure. In the scheme, the wind entering the wind guide chamber is guided onto the wall body 5 at a higher speed, and the wind guide efficiency is higher.

In this embodiment, the air inlet structure is including seting up the air intake 3 in first wind-guiding lateral wall 101 central point, makes the wind that enters into in the wind-guiding structure can be followed the center of wind-guiding structure and outwards spread, and the more even wind-guiding cavity that is full of faster promotes wind-guiding efficiency.

More specifically, as shown in fig. 2, the air inlet 3 is formed by extending inward for a certain distance along the center of the first air guiding sidewall 101, and the inward extending arrangement of the air inlet 3 enables the guided air to fill the air guiding chamber more quickly, thereby further improving the air guiding efficiency.

Further, the air outlet includes that the interval is established and encircles at annular cambered surface portion 101b the multiunit exhaust vent 2 that air intake 3 set up can guarantee from the more even scattering of the wind of deriving in the air ducting, and the wind after scattering carries out more complete mixture with indoor air, and it is better to mend the wind effect.

Preferably, each group of air outlet holes 2 comprises two rows of air outlet holes 2 which are linearly arranged;

more preferably, the number of the wind holes 2 in each list is 2-6.

Still preferably, as shown in fig. 1 to 4, the two rows of outlet holes 2 arranged linearly are respectively composed of 3 and 4 outlet holes.

As shown in fig. 3, the annular cambered surface portion 101b is streamlined, so that the wind resistance of the wind passing through the annular cambered surface portion 101b is smaller, and the wind guiding efficiency is higher. Furthermore, a plurality of groups of air outlets 2 are spirally arranged on the annular cambered surface structure at intervals, under the combined action of the air outlets 2 which are spirally arranged and the annular cambered surface structure, the air guided out of the air guide cavity is blown onto the wall body 5 in a corresponding spiral scattering shape, the scattered air is mixed with the original indoor air more fully, and the air supplementing effect is better.

In this embodiment, the casing 1 further includes a second wind guiding sidewall 102 disposed opposite to the first wind guiding sidewall 101, the second wind guiding sidewall 102 is a disc-shaped structure having a concave cavity therein, and a circumferential edge of the second wind guiding sidewall 102 is fixedly connected to an outer circumferential edge of the annular arc-shaped surface portion 101b of the first wind guiding sidewall 101 to form a disc-shaped structure having a hollow wind guiding chamber therein. The wind enters the wind guide cavity, fills the wind guide cavity, is guided by the second wind guide side wall 102, flows to the annular cambered surface portion 101b along the edge of the second wind guide side wall 102, and is guided out from the wind outlet hole 2, so that the wind guide process is completed.

Specifically, as shown in fig. 1 and 2, the second air guiding sidewall 102 has a disc-shaped structure similar to the first air guiding sidewall 101, and also includes a disc-shaped plane and a streamline arc-shaped structure, and the diameter of the joint of the second air guiding sidewall 102 and the first air guiding sidewall 101 is matched to form a complete whole. The inner side of the streamline cambered surface structure is of a smooth and complete structure, so that the wind is subjected to smaller wind resistance on the streamline cambered surface structure, and the wind is led out of the wind guide chamber with higher efficiency. The outer wall of the second air guide side wall 102 faces the indoor direction, and the combination of the streamline structure and the disc-shaped structure enables the whole air guide structure to be more attractive and better integrated into the indoor environment.

Specifically, the first air guiding side wall 101 and the second air guiding side wall 102 are of an integrated structure, the structural design is simpler, it is ensured that air entering the air guiding chamber can only be led out from the air outlet hole 2, and the air guiding effect of the air guiding device is improved.

In another scheme, the first air guiding side wall 101 and the second air guiding side wall 102 are detachably connected in a snap or threaded manner, and a sealing structure is arranged at the joint to ensure the sealing property between the first air guiding side wall 101 and the second air guiding side wall 102. First wind-guiding lateral wall 101 and second wind-guiding lateral wall 102 detachable connect, can make the installation of wind-guiding structure simple more convenient on the one hand, and on the other hand, the wind-guiding cavity and the exhaust vent 2 after the dismantlement carry out operations such as daily washing maintenance more easily, and the practicality is stronger.

Preferably, the sealing structure can adopt an annular sealing ring made of rubber materials, and is arranged on the inner wall of the joint of the first air guide side wall 101 and the second air guide side wall 102, when the first air guide side wall 101 and the second air guide side wall 102 are connected in a buckling or threaded screwing mode, the sealing rings on the inner walls on two sides are extruded and deformed mutually, the sealing effect of the joint of the first air guide side wall 101 and the second air guide side wall 102 is ensured by the tightly-attached sealing rings, so that the air entering the air guide cavity can only be led out through the air outlet 2, and the air guide effect is improved.

Furthermore, a filtering structure is arranged in the air guide cavity, outdoor air enters the air guide cavity from the air inlet 3, and cleaner air enters the air guide cavity from the air outlet after passing through the filtering structure.

Preferably, the filtering structure is an air filter screen, so that dust, bacteria and the like in outdoor air can be effectively prevented from entering a room, clean fresh air is introduced, and the indoor air quality is ensured. The detachable connection of the first air guide side wall 101 and the second air guide side wall 102 enables the replacement and cleaning of the air filter screen to be simpler and more convenient, so that the air guide structure can guarantee the supply of clean air more stably for a longer time.

More preferably, airstrainer detachable sets up in air intake 3 department, 3 internal peripheral recesses of air intake, airstrainer's periphery border be equipped with recess matched with chimb, airstrainer under the blowing force effect that 3 give of inflow air intake, firm support is in air intake 3 department, filters impurity such as dust in the air.

Example two

As shown in fig. 3 to fig. 6, the present embodiment provides an indoor air supplement device, which includes the air guide structure described in the foregoing embodiment, air is guided out from the air outlet 2 through the indoor air supplement device and blown toward the wall 5, so as to avoid directly blowing on a human body, and improve comfort during use; a large amount of fresh and clean outdoor air is supplemented indoors, and the indoor air quality is improved.

In this embodiment, the indoor air supplement device further includes an installation cylinder 4, one end of the installation cylinder is connected to the air inlet 3 of the air guide structure, the other end of the installation cylinder extends outwards to be communicated with outdoor air, and a fan is further installed in the installation cylinder 4 to improve the air supplement effect of the indoor air supplement device.

Specifically, the mounting cylinder 4 penetrates through the wall body 5, one end communicated with outdoor air extends outwards for a certain distance, a baffle is arranged at the opening, the baffle closes the opening in a conventional state, rainwater, sundries and the like are prevented from entering the mounting cylinder 4, and the sealing performance of an indoor space in the conventional state is ensured; when the indoor air supply device operates, the baffle plate opens the opening, so that the outside air can smoothly flow into the mounting cylinder 4 and is guided into the room through the air guide device.

In another scheme of this embodiment, an installation section of thick bamboo 4 sets up to extending structure, adjusts the length of an installation section of thick bamboo 4 through the flexible of interior outer tube, makes it can be better adaptation install in different thickness walls, promotes indoor air supplement device's practicality.

Specifically, the indoor air supplement device includes: the air inlet fan is arranged in an air guide cylinder of the first air supplementing device and used for supplying air to the indoor space, and the air outlet fan is arranged in an air guide cylinder of the second air supplementing device and used for exhausting indoor air to the outdoor space.

In a preferred scheme of this embodiment, first air supplement device and second air supplement device are installed respectively on two relative wall bodies 5 in the room, the air that gets into from the outdoor disperses along wall body 5 with first air supplement device as the center through the wind-guiding cavity, disperse back and carry out abundant mixture with indoor air, the air after the part is mixed uses second air supplement device as the center and is taken out to the outdoor along wall body 5, indoor outer air forms complete circulation wind path between two wall bodies 5, guarantee the mobility between indoor air and outdoor air, reduce the accumulation of impurity such as dust, dust mite in the indoor air, improve indoor air quality, promote user's comfort level.

Preferably, the air inlet fan that adopts in this embodiment chooses strong drum type fan for use, and strong type fan of drawing is chosen to the air-out fan, strengthens the leading-in speed of outdoor air and the speed that indoor air was taken out simultaneously, very big promotion indoor air supplement device's work efficiency.

In another embodiment, the air inlet fan and the air outlet fan belong to and adopt the low-noise centrifugal fan, so that the whole noise of the indoor air supplement device can be ensured to be smaller, the use experience of a user is not influenced, sufficient wind power and suction force can be provided, and the air supplement efficiency of the indoor air supplement device is not influenced.

EXAMPLE III

The present embodiment provides an indoor air supplement method, which controls an indoor air supplement device in the above embodiments to supplement air indoors.

As shown in fig. 7, in this embodiment, the indoor air supplement device further includes an indoor air detection device for detecting indoor air quality;

when the preset threshold is reached, controlling the fan to start to supplement the indoor air;

the indoor air is detected in real time through the indoor air detection device, when the detection reaches a set threshold value, the air supplementing device is controlled to be started, outdoor air is led into the room, the air is mixed in the room and then led out of the room through the second air supplementing device, circulation of the indoor air is guaranteed, and indoor air quality is kept in a good state.

Preferably, the air inlet fan and the air outlet fan are both frequency conversion fans, the air speed is divided into a plurality of gears, and the gears are adjusted according to different degrees of indoor air quality. When the indoor air quality is poor, the controller controls the air speed to be increased, so that the indoor air supplementing device can supplement indoor air with higher efficiency, and the indoor air quality can reach a better state as soon as possible.

Among the air quality parameters, the oxygen content is particularly important, especially in winter, because the indoor and outdoor temperature is poor, many users do not regularly ventilate indoors, and the oxygen content in the indoor air is easy to reduce.

In a preferred embodiment of this embodiment, the air quality parameter includes an oxygen content; when the indoor oxygen content value is detected to be lower than a set value, controlling a fan to start, and performing indoor air supplement; and when the indoor oxygen content value is detected to be larger than or equal to the set value, controlling the fan to be closed, and stopping indoor air supplement.

More preferably, an oxygen content detector is arranged outside the air supplementing device, after the device is started, the oxygen content detector monitors indoor oxygen content concentration in real time and feeds back signals to the controller, the controller receives the signals and judges the signals, and when the oxygen content concentration is smaller than or equal to a preset value, the controller controls the air inlet fan and the air outlet fan to be started, so that indoor air supplementing is automatically carried out; and when the monitored oxygen content concentration is greater than a preset value, controlling the air inlet fan and the air outlet fan to be closed, and ensuring that the indoor oxygen content concentration is always greater than the preset value.

More preferably, when the oxygen content concentration is less than or equal to 20%, the controller controls the fan to be started until the oxygen content is greater than 20% and higher than a preset value by a certain amount, for example, 21.5%, and the controller controls the fan to be shut down. The setting can avoid when indoor oxygen content concentration is about 20%, and the controller frequent control fan is opened and is closed, and humanized degree is higher in the design, can make indoor oxygen content concentration remain throughout in better within range.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.