CN215523600U - Fresh air system - Google Patents

Abstract

The utility model discloses a fresh air system which comprises a fresh air host (1) and a wind distribution purification box (2), wherein the fresh air host (1) is connected with the wind distribution purification box (2) through an air pipe, the wind distribution purification box (2) is used for sterilizing and purifying generated fresh air and distributing the fresh air into a plurality of air pipes so as to be transported to different rooms, an air conditioner (4) and a humidifier (5) are arranged in each room, the wind distribution purification box (2) is provided with a wind distribution purification box body (21), a sterilization unit (22) is arranged in each wind distribution purification box, and the sterilization unit (22) is columnar and is one or more of a plasma tube, a photohydrogen ion tube and an ultraviolet lamp tube. The fresh air system disclosed by the utility model has the advantages of small occupied space, low cost, obvious energy-saving effect and the like.

Description

Fresh air system

Technical Field

The utility model relates to a fresh air system, and belongs to the technical field of air purification.

Background

In the existing fresh air system, a fresh air host and an air conditioner work independently, the fresh air host realizes the exchange of indoor and outdoor air, and the air conditioner realizes the temperature regulation.

However, the ventilation volume of the fresh air main unit affects the power consumption of the air conditioner, so the two air main units need to be combined together, and when the indoor air needs to be adjusted, the two air main units work in cooperation to improve the efficiency.

In addition, each unit of the existing fresh air system needs a larger space in the installation and maintenance process, occupies a larger indoor use area, and is poor in user experience.

Therefore, it is necessary to research a new air system with small occupied area and better energy saving and environmental protection.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above problems, the inventor of the present invention has made intensive studies to design a fresh air system, which includes a fresh air main unit 1 and an air distribution purification box 2,

the fresh air host machine 1 generates fresh air which is connected with the air distribution purification box 2 through an air pipe,

the air distribution purification box 2 is used for sterilizing and purifying the generated fresh air, distributing the fresh air into a plurality of air pipes to be transported to different rooms, and an air conditioner 4 is arranged in each room and used for adjusting the temperature and humidity in the room;

the fresh air host 1 comprises a host machine shell 11, the bottom of the host machine shell 11 is provided with a detachable or openable maintenance board 115, a fresh air inlet filter 13, a fresh air outlet filter 14 and a dirty air inlet filter 15 are arranged in the host machine shell 11, a detachable or openable maintenance window 116 is arranged at a corresponding position on the maintenance board 115, and the fresh air inlet filter 13, the fresh air outlet filter 14 and the dirty air inlet filter 15 are taken from the interior of the host machine shell 11 through the maintenance window 116;

the air distribution purification box 2 is provided with an air distribution purification box body 21, a sterilization unit 22 is arranged in the air distribution purification box body, and the sterilization unit 22 is columnar and is one or more of a plasma tube, a light hydrogen ion tube and an ultraviolet lamp tube.

In a preferred embodiment, the system further comprises a humidifier 5, which is arranged in a different room to increase the humidity of the room.

In a preferred embodiment, the system further comprises a controller 6, and the fresh air host 1, the air conditioner 4 and the humidifier 5 are in communication connection with the controller 6.

In a preferred embodiment, a temperature and humidity sensor, a particulate matter sensor, and a carbon dioxide sensor are provided in the controller 6.

In a preferred embodiment, the system further comprises a sound-deadening box 3 which is arranged on an air pipe connected between the fresh air host 1 and the air-distributing purification box 2, or on an air pipe leading from the air-distributing purification box 2 to different rooms, so as to reduce wind noise;

the sound-deadening box 3 includes a sound-deadening box body 31 and a sound-deadening core 32,

the silencing core 32 is tubular, the middle section of the silencing core 32 is positioned in the silencing box body 31, and two ends of the silencing core penetrate through the silencing box body 31 so that air can enter and exit the silencing box;

the middle section of the sound-deadening core 32 has an inner-outer double-layer structure, the inner layer 321 and the outer layer 322 are both provided with micropores 323,

a sound absorption cotton layer 33 is arranged between the outer side of the sound absorption core 32 and the sound absorption box body 31;

the sound insulation cotton 34 is coated on the inner wall of the sound insulation box body 31.

In a preferred embodiment, when the air duct is a PVC duct, the sound deadening box 3 is disposed on the air duct leading from the air distribution purifying box 2 to different rooms;

when the air pipe is a PE pipe, the sound deadening box 3 is arranged on the air pipe connected between the fresh air host 1 and the air distribution purifying box 2.

In a preferred embodiment, the pores in inner layer 321 and outer layer 322 of sound-attenuating core 32 are of different pore sizes and densities;

the aperture of each micropore 323 on the inner layer 321 of the sound attenuation core 32 is 1-4 mm, and the gap between every two micropores 323 is 5-15 mm;

the aperture of the micropores 323 on the outer layer 322 of the sound attenuation core 32 is 3-6 mm, and the gaps between the micropores 323 are 15-40 mm

In a preferred embodiment, a heat exchanger 12 is disposed inside the main machine case 11, the heat exchanger 12 is square, four sides of the heat exchanger 12 are used for air inlet and outlet, and the diagonal length of the heat exchanger 12 is the same as the width of the main machine case 11.

In a preferred embodiment, in the main machine case 11, a partition 121 is disposed on a diagonal extension line of a square cross section of the heat exchanger 12, the main machine case 11 is divided into four spaces by the partition 121 and four sides of the heat exchanger 12, each of the four spaces has an air inlet, namely a fresh air inlet 111, a fresh air outlet 112, a dirty air inlet 113 and a dirty air outlet 114, wherein the space corresponding to the fresh air inlet 111 and the fresh air outlet 112 is located on one opposite side of the heat exchanger 12, the space corresponding to the dirty air inlet 113 and the dirty air outlet 114 is located on the other opposite side of the heat exchanger 12,

divide wind purifying box 2 and be connected with new trend export 112, new trend entry 111, dirty wind export 114 pass through the pipeline and are connected with outdoor air, dirty wind entry 113 and indoor air intercommunication.

In a preferred embodiment, a fan 16 is disposed in the space corresponding to the fresh air outlet 112 and the dirty air outlet 114 in the main body housing 11;

a temperature and humidity sensor is arranged in a space corresponding to the dirty air outlet 114;

a temperature and humidity sensor and a particle size sensor are arranged in the space corresponding to the fresh air outlet 112.

The fresh air system provided by the utility model has the following advantages:

(1) the system occupies small space and is convenient to install and transport;

(2) the existing electrical appliances such as an air conditioner, a humidifier and the like are fully utilized, and the deployment cost of the fresh air system is saved;

(3) the humidifier is used for assisting the air conditioner and the fresh air host to adjust the humidity, and high-efficiency total heat recovery is adopted, so that the overall energy-saving effect of the system is remarkable.

Drawings

FIG. 1 is a schematic diagram of a main machine structure of a fresh air machine in a fresh air system according to a preferred embodiment of the utility model;

FIG. 2 is a schematic diagram of an internal structure of a main unit of a fresh air machine in a fresh air system according to a preferred embodiment of the present invention;

FIG. 3 is a schematic diagram illustrating a bottom structure of a main frame of a fresh air machine in a fresh air system according to a preferred embodiment of the present invention;

FIG. 4 is a schematic diagram of an internal structure of a main frame of a fresh air machine in a fresh air system according to a preferred embodiment of the present invention;

FIG. 5 is a schematic diagram showing the external structure of an air distribution purification box in a fresh air system according to a preferred embodiment of the utility model;

FIG. 6 is a schematic diagram showing an internal structure of an air distribution purification box in a fresh air system according to a preferred embodiment of the present invention;

FIG. 7 is a schematic diagram showing an internal structure of an air distribution purification box in a fresh air system according to a preferred embodiment of the utility model;

FIG. 8 is a schematic structural diagram of a clamping groove of an air distribution purification box in a fresh air system according to a preferred embodiment of the utility model;

FIG. 9 is a schematic sectional view of an air distribution purification box in a fresh air system according to a preferred embodiment of the utility model;

FIG. 10 is a schematic view of the structure of an air distribution purification box guide slideway in a fresh air system according to a preferred embodiment of the utility model;

FIG. 11 is a schematic structural diagram of an electric control box of an air distribution purification box in a fresh air system according to a preferred embodiment of the utility model;

FIG. 12 is a schematic diagram showing the external structure of an air distribution purification box in a fresh air system according to a preferred embodiment of the utility model;

FIG. 13 is a schematic sectional view of an air distribution purification box in a fresh air system according to a preferred embodiment of the present invention;

FIG. 14 is a schematic diagram showing the external structure of an air distribution purification box in a fresh air system according to a preferred embodiment of the utility model;

FIG. 15 is a schematic diagram of the outline structure of a whistle box in a fresh air system according to a preferred embodiment of the utility model;

fig. 16 is a schematic view showing a sectional structure of a whistle box in a fresh air system according to a preferred embodiment of the present invention.

The reference numbers illustrate:

11-a host housing;

12-a heat exchanger;

13-fresh air inlet filter;

14-fresh air outlet filter;

15-dirty wind inlet filter;

16-a fan;

17-a display screen;

111-fresh air inlet;

112-fresh air outlet;

113-dirty wind inlet;

114-a dirty air outlet;

115-a service panel;

116-service window;

121-a separator;

21-air distribution purification box body;

22-a sterilization unit;

23-an electronic control box;

211-air inlet;

212-rear air outlet;

213-card slot;

214-wind-gathering plate;

215-side air outlet;

216-a wind deflector;

217-a guide chute;

231-a guide rod;

2131-grooves;

2141-plate;

2161-bolt;

2162-elongated through hole;

31-a box body;

32-a sound-deadening core;

33-sound absorbing cotton layer;

34-soundproof cotton;

321-an inner layer;

322-an outer layer;

323-micropores.

Detailed Description

The utility model is explained in more detail below with reference to the figures and examples. The features and advantages of the present invention will become more apparent from the description.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

The utility model provides a fresh air system, which comprises a fresh air host machine 1 and an air distribution purification box 2, wherein the fresh air host machine 1 generates fresh air which is connected with the air distribution purification box 2 through an air pipe,

the air distribution purification box 2 is used for sterilizing and purifying the generated fresh air, distributing the fresh air to a plurality of air pipes to be transported to different rooms, and an air conditioner 4 is further arranged in each room to adjust the temperature and humidity in the room, as shown in fig. 1.

In the utility model, the quality of air such as particulate matters, carbon dioxide and the like in a room is adjusted through the fresh air host, the temperature and the humidity of the air are adjusted through the air conditioner 4, and the adjustment of the whole indoor air is realized through the matching of the fresh air host and the traditional air conditioner 4.

Traditional new trend system, air quality control and air comfort adjustment are parted, and it is unusual that the new trend system detects the room air often to appear, increases the scavenging air volume to lead to the indoor temperature to appear suddenly changing, the air conditioner is adjusted indoor temperature again behind the temperature sudden change, and the user can appear suddenly cold suddenly, suddenly hot, obvious changes such as moist drying, experiences relatively poorly.

In the utility model, when the indoor or outdoor air quality is greatly changed, the indoor air is quickly adjusted by adjusting the power of the fresh air host and the air conditioner simultaneously so as to ensure the stability of the indoor environment.

Further preferably, the system further comprises a humidifier 5 which is arranged in different rooms to improve the humidity of the rooms, and the indoor air humidity is improved through the humidifier 5, so that the adjusting speed is higher and the power consumption is lower than that of the system which is adjusted through the air conditioner 4.

Further, the system also comprises a controller 6, and the fresh air host 1, the air conditioner 4 and the humidifier 5 are in communication connection with the controller 6.

In the present invention, the specific manner of the communication connection is not particularly limited, and the communication connection may be a wired connection, such as an RS485 protocol communication connection, or a wireless connection, such as a WIFI connection.

Preferably, a temperature and humidity sensor, a particulate matter sensor and a carbon dioxide sensor are arranged in the controller 6 to detect the indoor air quality, and the operation power of the fresh air host, the air conditioner 4 and the humidifier 5 is controlled according to the detected air quality.

According to the utility model, the fresh air host machine comprises a host machine shell 11, as shown in fig. 2 and 3, a heat exchanger 12, a fresh air inlet filter 13, a fresh air outlet filter 14 and a dirty air inlet filter 15 are arranged in the host machine shell 11,

further, the fresh air inlet filter 13, the fresh air outlet filter 14, and the dirty air inlet filter 15 are flat plates, and are used for filtering air entering the fresh air machine main body.

According to the present invention, the bottom of the main machine housing 11 is a detachable or openable inspection panel 115, the inspection panel 115 is provided with detachable or openable inspection windows 116 corresponding to the positions of the fresh air inlet filter 13, the fresh air outlet filter 14 and the dirty air inlet filter 15, and the fresh air inlet filter 13, the fresh air outlet filter 14 and the dirty air inlet filter 15 are taken out from the main machine housing 11 through the inspection windows 116, as shown in fig. 4.

Because the main unit of the fresh air fan is usually installed in a ceiling type, the maintenance board 115 is arranged at the bottom of the main unit casing 11, so that convenience is provided for field installation, maintenance and the like of the fresh air fan.

Further, to the higher new trend entry filter 13 of change frequency, new trend export filter 14 and dirty wind entry filter 15, set up special maintenance window in its lower part, further reduced and overhauld the operation space requirement, the later stage user maintenance of being convenient for.

Further, according to the present invention, the heat exchanger 12 is square, four sides of the heat exchanger 12 are used for air inlet and outlet, and the opposite sides are communicated, so that the air flows in a cross manner.

In the present invention, the specific material and internal structure of the heat exchanger are not particularly limited, and may be any heat exchanger capable of achieving an air heat exchange effect, and preferably is a total heat exchange heat exchanger, such as a paper total heat recovery heat exchanger or a graphene total heat recovery heat exchanger.

According to a preferred embodiment of the present invention, in the main machine housing 11, a partition 121 is disposed on a diagonal extension line of a square cross section of the heat exchanger 12, the main machine housing 11 is divided into four spaces by the partition 121 and four side surfaces of the heat exchanger 12, each of the four spaces has an air inlet, which is a fresh air inlet 111, a fresh air outlet 112, a dirty air inlet 113 and a dirty air outlet 114, wherein the space corresponding to the fresh air inlet 111 and the fresh air outlet 112 is located on one opposite side of the heat exchanger 12, and the space corresponding to the dirty air inlet 113 and the dirty air outlet 114 is located on the other opposite side of the heat exchanger 12, as shown in fig. 3.

Further preferably, the length of the diagonal line of the heat exchanger 12 is the same as the width of the main machine housing 11, so that the occupation ratio of the heat exchanger 12 in the main machine housing 11 is the maximum, thereby maximally improving the total heat recovery efficiency and improving the energy saving effect, as shown in fig. 5.

According to the utility model, the fresh air inlet filter 13 is arranged in the space corresponding to the fresh air inlet 111 and is used for filtering outdoor air entering the main unit of the fresh air machine;

the fresh air outlet filter 14 is arranged in the space corresponding to the fresh air outlet 112, and is used for filtering the air after heat exchange again, preferably, the fresh air outlet filter 14 is a HEPA filter which can filter particles with the particle size of more than 10.13 microns so as to ensure that the air sent into the room has excellent quality;

the dirty air inlet filter 15 is disposed in a space corresponding to the dirty air outlet 114, and filters the return air in the room to protect the exchanger, as shown in fig. 3.

In a preferred embodiment, the fresh air inlet filter 13 comprises a primary filter plate and a secondary filter plate, the primary filter plate is used for filtering particles with a size of more than 15 micrometers, the secondary filter plate is used for filtering particles with a size of more than 11 micrometers, and the fresh air inlet filter is divided into the primary filter plate and the secondary filter plate due to different particle contents with different volumes in outdoor air, so that the loss speed of the filter plates can be effectively reduced, and the service life of the filter plates is prolonged.

The primary filter plate, the secondary filter plate and the HEPA filter are all common filter units for a fresh air system, and further the primary filter plate, the secondary filter plate and the HEPA filter are all provided with flat screen frames, wherein G13 or G14 grade filter cotton is filled in the screen frames of the primary filter plate, F16 or F17 grade filter cotton is filled in the screen frames of the secondary filter plate, and folded glass fiber filter paper is arranged in the screen frames of the HEPA filter.

Further, according to the present invention, the blower 16 is provided in the space corresponding to the fresh air outlet 112 and the dirty air outlet 114 in the main body housing 11.

In a preferred embodiment, a temperature/humidity sensor is provided in a space corresponding to the dirty air outlet 114.

Further, because the new fan main unit is arranged indoors and used together with the indoor detection controller 6, the new fan main unit can obtain the recovery efficiency of the heat exchanger by comparing the indoor air temperature and humidity detected by the indoor detection controller 6 and the space-time temperature and humidity in the space corresponding to the dirty air outlet, so that the monitoring of the heat exchanger is realized, and a data basis is provided for maintenance.

In a preferred embodiment, a temperature and humidity sensor and a particle size sensor are disposed in a space corresponding to the fresh air outlet 112, and are used for detecting the quality of air discharged by the main unit of the fresh air machine, monitoring the filter, and providing a data basis for maintenance.

In a more preferred embodiment, a display screen 17 is disposed on the outside of the main machine housing 11 for displaying the total heat recovery effect and the quality of the air discharged from the fresh air outlet 112, so that a user can visually check the operation state of the fresh air main machine.

In the utility model, outdoor air enters a fresh air machine host through a fresh air inlet 111, sequentially passes through a fresh air inlet filter 13, a heat exchanger 12 and a fresh air outlet filter 14, and is discharged to the indoor from a fresh air outlet 112; indoor air enters the fresh air machine host through the dirty air inlet 113, and is discharged outdoors from the dirty air outlet 114 after sequentially passing through the dirty air inlet filter 15 and the heat exchanger 12, wherein the outdoor air and the discharged outdoor air are subjected to total heat exchange in the heat exchanger 12, and energy recovery is realized.

According to the present invention, the air-distributing purifying box 2 comprises an air-distributing purifying box body 21, an air inlet 211 is disposed on the front surface of the air-distributing purifying box body 21, and a plurality of rear air outlets 212 are disposed on the rear surface of the air-distributing purifying box body 21, as shown in fig. 5 and 6.

A sterilization unit 22 is arranged in the air distribution purification box body 21, and the sterilization unit 22 is columnar and is one or more of a plasma tube, a photo-hydrogen ion tube and an ultraviolet lamp tube.

In the traditional fresh air system, air distribution and air sterilization are respectively completed through the two boxes.

Further, a through hole is arranged on one side surface of the air distribution purification box body 21, an electric control box 23 is arranged on the outer side of the side surface, and one end of the sterilization unit 22 is connected with the electric control box 23 through the through hole, as shown in fig. 7;

according to the present invention, the wind collecting plate 214 is disposed inside the wind distribution purification box 21, and the wind collecting plate 214 is disposed on the upper surface or the lower surface of the inner side of the wind distribution purification box 21, so that the inner diameter of the box is reduced at the position corresponding to the sterilization unit 22, and the air entering the wind distribution purification box 21 is concentrated around the sterilization unit 22, thereby improving the sterilization effect of the sterilization unit 22, as shown in fig. 9.

Because the sterilization unit 22 is blown by wind in the wind distribution purification box 21 for a long time, if the end part is not fixed, the connection with the electric control box 23 is easy to loose, and phenomena such as vibration, abnormal sound and the like, even potential safety hazards such as burnout, electric leakage and the like occur.

In a preferred embodiment, inside the air-distributing purifying box 21, a clamping groove 213 is provided on the opposite side of the electrical control box 23, and as shown in fig. 8, one end of the sterilizing unit 22 is placed in the clamping groove 213.

Further, the slot 213 has a recess 2131 with the same shape as the end of the germicidal unit 22, the end of the germicidal unit 22 is placed in the recess 2131, and the end supporting the germicidal unit 22 is fixed by the recess 2131.

According to the utility model, a plug is arranged at the connecting end of the sterilizing unit 22 and the electric control box 23, a corresponding socket is arranged on the electric control box 23, the electric control box 23 is connected with the sterilizing unit 22 through the matching of the plug and the socket, and the electric control box 23 is used for providing power for the sterilizing unit 22.

In a more preferred embodiment, the plug is an aircraft plug.

In a preferred embodiment, the wind-gathering plate 214 has a flat plate 2141 disposed obliquely, so that a cavity is formed between the wind-gathering plate 214 and the upper or lower side of the wind-dividing purifying tank 21, as shown in fig. 9.

According to the present invention, when the sterilization unit 22 is installed or replaced, the sterilization unit 22 is installed on the electric control box 23, and then the electric control box 23 is installed outside the air-distribution purification box 21.

The inventors have found that the sterilizing unit 22 is not easily aligned with the insertion groove 2131 during the installation process, the installation is difficult, and the user experience is poor.

In a preferred embodiment, a mounting guide rod 231 is arranged on the electronic control box 23, a guide slide 217 is arranged in the air distribution purification box body 21, and the guide rod 231 can slide in the guide slide 217, so that the axes of the socket of the electronic control box 23, the sterilization unit 22 and the groove 2131 are collinear during the mounting process, as shown in fig. 10 and 11.

In a preferred embodiment, a side outlet 215 is provided on the side of the air-distributing purifying box 21, and the side outlet is located at one end close to the rear outlet 212, as shown in fig. 12.

Because the side air outlet is positioned on the side surface of the air-dividing purifying box body 21, the wind power output from the side air outlet is smaller.

In a more preferred embodiment, a wind deflector 216 is disposed inside the side surface of the wind distribution purification box 21, one end of the wind deflector 216 is hinged to the end of the side surface of the box, and the other end is connected to the side surface of the wind distribution purification box 21 by a bolt 2161, so that the wind deflector 216 forms an included angle with the side surface of the wind distribution purification box 21, as shown in fig. 13, to guide part of the wind to be discharged from the side outlet.

Further, the connecting position of the air deflector 216 and the bolt 2161 is provided with a strip-shaped through hole 2162, one end of the bolt 2161 protrudes out of the side surface of the air distribution purification box 21, and the inclination angle between the air deflector 216 and the side surface of the air distribution purification box 21 is adjusted by adjusting the length of the bolt 2161 protruding out of the air distribution purification box 21, as shown in fig. 14, when the side air outlet is not needed, the length of the bolt protruding out of the air distribution purification box 21 is adjusted, so that the air deflector 216 is tightly attached to the side wall of the air distribution purification box 21, thereby closing the side air outlet.

According to the present invention, the sound-deadening box 3 comprises a sound-deadening box body 31 and a sound-deadening core 32, as shown in fig. 15, the sound-deadening core 32 has a tubular shape, the middle section of the sound-deadening core 32 is located in the sound-deadening box body 31, and both ends penetrate through the sound-deadening box body 31, so that air can enter and exit the sound-deadening box.

Further, the middle section of the sound-absorbing core 32 has an inner-outer double-layer structure, and both the inner layer 321 and the outer layer 322 have micropores 323, so that preliminary sound absorption and noise reduction are realized through the micropores 323, as shown in fig. 16.

Different from the traditional single-layer silencing core structure, in the utility model, the silencing core 32 is divided into an inner layer and an outer layer, so that the number and density of micropores are greatly increased, and the silencing effect is better.

Preferably, the inner and outer layers have different pore sizes and densities to increase the frequency of sound attenuation.

In a preferred embodiment, the diameter of the pores 323 on the inner layer 321 of the sound-absorbing core 32 is 1-4 mm, and the gaps between the pores 323 are 5-15 mm; the aperture of the micropores 323 on the outer layer 322 of the sound attenuation core 32 is 3-6 mm, and the gaps between the micropores 323 are 15-40 mm.

The inventor finds that under the aperture and the clearance, the noise reduction effect on low-frequency noise is good, and particularly, the noise elimination effect on a fresh air system is better.

It should be noted that, in the present invention, the micro holes 323 are not limited to circular holes, and may be square holes or holes of other shapes as long as the hole area satisfies the above definition.

In a preferred embodiment, the sound absorbing material is filled between the inner layer 321 and the outer layer 322 of the sound absorbing core 32 to achieve better sound absorption effect.

The sound absorbing material has an attraction coefficient of 30.32 or more.

Preferably, the sound absorbing material is one or more of glass fiber, non-woven fabric, polyester fiber cotton, cotton felt and PE fiber, and more preferably is glass fiber.

According to the present invention, sound absorbing cotton is filled between the outside of the silencing core 32 and the silencing box body 31 to form a sound absorbing cotton layer 33.

Preferably, the sound-absorbing cotton layer 33 includes not less than two sound-absorbing materials to absorb noise of different frequencies, and more preferably, a plurality of sound-absorbing materials are stacked in layers to ensure uniformity of sound absorption of the sound-absorbing cotton layer 33.

In a preferred embodiment, the thickness of the sound-absorbing cotton layer 33 is 1.35 to 3 times the outer diameter of the sound-absorbing core 32, and both the sound-absorbing effect and the volume ratio are satisfied.

In a preferred embodiment, the sound insulation cotton 34 is coated on the inner wall of the sound insulation box body 31, and the sound insulation cotton 34 covers the sound insulation cotton layer 33, so that noise is not transmitted to the surface of the sound insulation box body 31 through the sound insulation cotton layer 33 and then is transmitted out of the sound insulation box body 31.

In a preferred embodiment, the soundproof cotton 34 has a thickness of 3 to 20 mm.

In the present invention, the shape of the sound-absorbing box 31 is not particularly limited, and may be a cube, a cylinder or other shapes, preferably a cube, for easy installation and placement.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", and the like indicate orientations or positional relationships based on operational states of the present invention, and are only used for convenience of description and simplification 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. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise specifically stated 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; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. 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 has been described above in connection with preferred embodiments, but these embodiments are merely exemplary and merely illustrative. On the basis of the above, the utility model can be subjected to various substitutions and modifications, and the substitutions and the modifications are all within the protection scope of the utility model.

Claims (10)

1. A fresh air system comprises a fresh air host (1) and an air distribution purification box (2), and is characterized in that,

the fresh air host (1) generates fresh air which is connected with the air distribution purification box (2) through an air pipe,

the air distribution purification box (2) is used for sterilizing and purifying the generated fresh air, distributing the fresh air into a plurality of air pipes to be transported to different rooms, and an air conditioner (4) is arranged in each room and used for adjusting the temperature and humidity in each room;

the fresh air host (1) comprises a host shell (11), a detachable or openable maintenance board (115) is arranged at the bottom of the host shell (11), a fresh air inlet filter (13), a fresh air outlet filter (14) and a dirty air inlet filter (15) are arranged in the host shell (11), a detachable or openable maintenance window (116) is arranged at a corresponding position on the maintenance board (115), and the fresh air inlet filter (13), the fresh air outlet filter (14) and the dirty air inlet filter (15) are taken from the interior of the host shell (11) through the maintenance window (116);

the air distribution purification box (2) is provided with an air distribution purification box body (21), a sterilization unit (22) is arranged in the air distribution purification box body, and the sterilization unit (22) is columnar and is one or more of a plasma tube, a light hydrogen ion tube and an ultraviolet lamp tube.

2. The fresh air system of claim 1,

the system further comprises humidifiers (5) arranged in different rooms to increase the humidity of the rooms.

3. The fresh air system as claimed in claim 1 or 2,

the system further comprises a controller (6), and the fresh air host (1), the air conditioner (4) and the humidifier (5) are in communication connection with the controller (6).

4. The fresh air system of claim 3,

a temperature and humidity sensor, a particulate matter sensor and a carbon dioxide sensor are arranged in the controller (6).

5. The fresh air system of claim 1,

the system also comprises a sound-deadening box (3) which is arranged on an air pipe connected between the fresh air host (1) and the air distribution purification box (2) or on air pipes leading to different rooms from the air distribution purification box (2) so as to reduce wind noise;

the sound-deadening box (3) comprises a sound-deadening box body (31) and a sound-deadening core (32),

the silencing core (32) is tubular, the middle section of the silencing core (32) is positioned in the silencing box body (31), and two ends of the silencing core penetrate through the silencing box body (31) so that air can enter and exit the silencing box body;

the middle section of the sound attenuation core (32) is an inner-outer double-layer structure, micropores (323) are arranged on the inner layer (321) and the outer layer (322),

a sound absorption cotton layer (33) is arranged between the outer side of the sound absorption core (32) and the sound absorption box body (31);

the inner wall of the sound insulation box body (31) is coated with sound insulation cotton (34).

6. The fresh air system of claim 5,

when the air pipe is a PVC pipe, the sound deadening box (3) is arranged on the air pipe of the air distribution purification box (2) which leads to different rooms;

when the air pipe is a PE pipe, the sound deadening box (3) is arranged on the air pipe connected between the fresh air host (1) and the air distribution purifying box (2).

7. The fresh air system of claim 5,

the pore diameter and the density of the micropores on the inner layer (321) and the outer layer (322) of the sound attenuation core (32) are different;

the aperture of the micropores (323) on the inner layer (321) of the silencing core (32) is 1-4 mm, and the gaps between the micropores (323) are 5-15 mm;

the aperture of the micropores (323) on the outer layer (322) of the silencing core (32) is 3-6 mm, and the gaps among the micropores (323) are 15-40 mm.

8. The fresh air system of claim 1,

the heat exchanger (12) is arranged in the main machine shell (11), the heat exchanger (12) is square, four side faces of the heat exchanger (12) are used for air inlet and outlet, and the length of a diagonal line of the heat exchanger (12) is the same as the width of the main machine shell (11).

9. The fresh air system of claim 1,

in the main machine shell (11), a partition plate (121) is arranged on a diagonal extension line of a square section of a heat exchanger (12), the interior of the main machine shell (11) is divided into four spaces by the partition plate (121) and four side faces of the heat exchanger (12), each of the four spaces is provided with an air port which is respectively a fresh air inlet (111), a fresh air outlet (112), a dirty air inlet (113) and a dirty air outlet (114), wherein the space corresponding to the fresh air inlet (111) and the fresh air outlet (112) is positioned on one opposite side of the heat exchanger (12), the space corresponding to the dirty air inlet (113) and the dirty air outlet (114) is positioned on the other opposite side of the heat exchanger (12),

divide wind purifying box (2) to be connected with new trend export (112), new trend entry (111), dirty wind export (114) are connected with outdoor air through the pipeline, dirty wind entry (113) and indoor air intercommunication.

10. The fresh air system of claim 9,

a fan (16) is arranged in a space corresponding to the fresh air outlet (112) and the dirty air outlet (114) in the main machine shell (11);

a temperature and humidity sensor is arranged in a space corresponding to the dirty air outlet (114);

a temperature and humidity sensor and a granularity sensor are arranged in the space corresponding to the fresh air outlet (112).

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