CN211146811U - Fresh air system - Google Patents

Abstract

The utility model relates to a new trend system. Fresh air system include: the fresh air pipeline is used for sending outdoor air into a room, and a fresh air fan and a first air stop valve are arranged in the fresh air pipeline; an exhaust duct for discharging indoor air to the outside, in which an exhaust fan is provided; one end of the first pipeline is connected to the air inlet side of the exhaust fan; and one end of the second pipeline is connected with the first pipeline, the other end of the second pipeline is used for being connected to the indoor space, and a fourth air stop valve is arranged in the second pipeline. When the outdoor temperature is below-0 ℃, the fresh air system can not only provide outdoor air for the indoor, but also effectively avoid the occurrence of condensation of the pipeline.

Description

Fresh air system

Technical Field

The utility model relates to an air conditioning field especially relates to a new trend system.

Background

The fresh air system is an effective air purification device, can transmit outdoor fresh air into the room after processes such as filtering and heating, and can also discharge indoor dirty air outdoors.

Through utility model people's research and development for many years, utility model people discovery, the in-process that new trend system was used winter in the area in china northern, when needs sent into the new trend indoor, because outdoor temperature is lower, so send into indoor pipeline with outdoor new trend and appear the dewfall problem easily. In order to solve the problem, the existing fresh air system is generally solved by a PTC heater. However, this solution works only when the outside temperature is a certain temperature, and it does not solve the problem of the dew condensation of the pipe well if the outside temperature is below-0 ℃.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model aims at providing a new trend system, when outdoor temperature is below-0 ℃, this new trend system can not only provide outdoor air to indoor, can avoid taking place the pipeline dewfall moreover effectively.

A new trend system includes:

the fresh air pipeline is used for sending outdoor air into a room, and a fresh air fan and a first air stop valve are arranged in the fresh air pipeline;

an exhaust duct for discharging indoor air to the outside, in which an exhaust fan is provided;

one end of the first pipeline is connected to the air inlet side of the exhaust fan;

and one end of the second pipeline is connected with the first pipeline, the other end of the second pipeline is used for being connected to the indoor space, and a fourth air stop valve is arranged in the second pipeline.

Compared with the prior art, when the outside temperature is below-0 ℃ and fresh air needs to be fed into the room, the fourth air stop valve is opened, the air exhaust fan is started, the fresh air fan is closed, the indoor polluted air is exhausted to the outside by the air exhaust fan with strong force, and the air exhaust amount is increased by increasing the communication port between the air exhaust fan and the room, so that negative pressure is formed in the room. Because the outdoor air pressure is greater than the indoor air pressure, the outdoor air can flow into the room through the door gap or the wall air inlet device, and therefore fresh air is sent into the room. In addition, in the whole air replacement process, outdoor fresh air cannot enter the room through the pipeline of the fresh air system, and the condensation phenomenon of the pipeline of the fresh air system is effectively avoided.

Furthermore, the air inlet side of the fresh air fan is provided with a first air stop valve, one end of the second pipeline is connected with the other end of the first pipeline, and the other end of the second pipeline is connected to the air outlet side of the fresh air fan.

By adopting the technical scheme, the second pipeline and the fresh air pipeline can share one indoor air port, and the structure and the installation of a fresh air system are facilitated to be simplified. And when the new trend system made indoor formation negative pressure, closed the air intake of new trend pipeline through closing first ending blast valve, prevent that outdoor air conditioning from getting into the new trend pipeline, help avoiding the interior dewfall of new trend pipeline, also help protecting new trend fan and extension new trend fan's life.

Furthermore, one end of the first pipeline is connected to the air inlet side of the exhaust fan, and the other end of the first pipeline is connected to the air inlet side of the second pipeline and the air inlet side of the fresh air fan respectively.

By adopting the technical scheme, when the fresh air system enables the indoor to form negative pressure, the indoor air can flow to the outdoor after sequentially passing through the second pipeline, the first pipeline and the air exhaust fan, and the indoor air can also flow to the outdoor after sequentially passing through the fresh air fan, the first pipeline and the air exhaust fan, so that the air exhaust amount is further increased.

And furthermore, a second air stop valve is arranged on the pipeline, connected to the air inlet side of the fresh air fan, of the first pipeline.

By adopting the technical scheme, when the fresh air fan works, the second air stop valve is closed to close the first pipeline, so that the situation that polluted air in the exhaust pipeline and in the first pipeline is sent into a room by the fresh air fan again is avoided.

Furthermore, a third air stop valve is arranged on the pipeline, connected to the air inlet side of the fresh air fan, of the first pipeline.

Adopt above-mentioned technical scheme, through set up two ending blast valves on first pipeline, improve the leakproofness of first pipeline, help further avoid in the exhaust pipe, the contaminated air in the first pipeline is sent into indoorly by the new trend fan once more.

Furthermore, the fresh air fan is provided with a first air stop valve on the air inlet side and a third pipeline, one end of the third pipeline is arranged between the first air stop valve and the fresh air fan, the other end of the third pipeline is connected to the exhaust pipeline, and the third pipeline is provided with a fifth air stop valve.

Adopt above-mentioned technical scheme, close first stagnant air valve, the fan of airing exhaust, open fifth stagnant air valve, start new trend fan, the air intake inflow of indoor air from exhaust pipe says, and then the indoor air flows into new trend pipeline from the third pipeline, and the indoor air flows into indoor again under new trend fan's effect at last, realizes the indoor air inner loop. When the outdoor temperature is between-0 ℃ and-15 ℃, the indoor air is internally circulated to prevent outdoor cold air from entering the fresh air pipeline, which is beneficial to avoiding condensation in the fresh air pipeline.

Furthermore, a first filtering device for filtering air is arranged on the air inlet side of the exhaust fan, and the joint of the third pipeline and the exhaust pipeline is arranged between the exhaust fan and the first filtering device.

Adopt above-mentioned technical scheme, come from indoor air through first filtration filter equipment filtration, at the in-process of exhaust room air, first filtration filter equipment can protect the fan of airing exhaust. In-process at the air inner loop, first filtration filter equipment not only can protect the new trend fan, can improve circulating air's new freshness moreover.

Furthermore, a second filtering device for filtering air is arranged between the fresh air fan and the first air stop valve, and the joint of the third pipeline and the fresh air pipeline is positioned between the first air stop valve and the second filtering device.

Adopt above-mentioned technical scheme, help improving the new freshness of air and protection new trend motor.

Furthermore, the air purifier also comprises a heat exchanger, wherein the heat exchanger is arranged between the fresh air fan and the second filtering device, the heat exchanger is also arranged between the exhaust air fan and the first filtering device, and the joint of the third pipeline and the exhaust pipeline is arranged between the heat exchanger and the first filtering device.

By adopting the technical scheme, the gas of the fresh air pipeline and the gas of the exhaust pipeline carry out gas heat exchange in the heat exchanger, the gas of the fresh air pipeline recovers the heat of the gas of the exhaust pipeline, and the gas after recovering the heat is sent into the room again, so that the indoor temperature is maintained, and the user experience is improved.

The indoor unit further comprises a machine body, wherein a fresh air pipeline, an exhaust pipeline, a first pipeline, a second pipeline, a third pipeline, a control module and a raindrop detection module are arranged in the machine body;

the raindrop detection module, the first air stop valve, the second filtering device, the heat exchanger and the fresh air fan are sequentially arranged on the fresh air pipeline along the direction that outdoor air flows into the room, the raindrop detection module is arranged at the air inlet of the fresh air pipeline and is used for detecting whether liquid exists at the air inlet of the fresh air pipeline or not, the second filtering device comprises a primary filter screen, a high-efficiency filter screen and an active carbon filter screen which are sequentially arranged along the direction that outdoor air flows into the room, a first sensor module is arranged between the primary filter screen and the high-efficiency filter screen and used for detecting at least one parameter of temperature, humidity, PM2.5 and carbon dioxide of the gas in the fresh air pipeline, a heating device for heating gas is also arranged between the primary filter screen and the high-efficiency filter screen;

along the direction from indoor air to outdoor, a first filtering device, a second sensor module, the heat exchanger and the exhaust fan are sequentially arranged on the exhaust pipeline, the first filtering device comprises a primary filter screen, and the second sensor module is used for detecting at least one parameter of temperature, humidity, PM2.5 and carbon dioxide of gas in the exhaust pipeline;

the first pipeline is arranged below the fresh air pipeline and the exhaust pipeline, a second air stop valve and a third air stop valve are arranged in the first pipeline, the first end of the first pipeline is arranged between the exhaust fan and the heat exchanger, and the second end of the first pipeline is respectively connected between the fresh air fan and the heat exchanger and on the second pipeline;

the second pipeline is arranged below the fresh air pipeline, a fourth air stop valve is arranged in the second pipeline, the first end of the second pipeline is connected with the second end of the first pipeline, and the second end of the second pipeline is connected to the air outlet side of the fresh air fan;

the third pipeline is arranged below the fresh air pipeline and the exhaust pipeline, a fifth air stop valve is arranged in the third pipeline, the first end of the third pipeline is arranged between the first air stop valve and the second filtering device, and the second end of the third pipeline is arranged between the heat exchanger and the first filtering device;

the control module is respectively electrically connected with the fresh air fan, the exhaust fan, the first air stop valve, the second air stop valve, the third air stop valve, the fourth air stop valve, the fifth air stop valve, the first sensor module, the second sensor module and the raindrop detection module;

the air inlet of the fresh air fan faces downwards vertically, the air inlet of the exhaust fan faces downwards vertically, a connecting port of the first pipeline and the fresh air pipeline corresponds to the air inlet of the fresh air fan, and a connecting port of the first pipeline and the exhaust pipeline corresponds to the air inlet of the exhaust fan;

an opening is formed in the pipe wall of the air outlet side of the fresh air fan, the fourth air stop valve comprises a baffle and a motor, the baffle covers the opening, the motor is installed on the pipe wall, and the motor drives the baffle to rotate so as to open the opening;

the window curtain wall type air inlet device is characterized by further comprising a wall type air inlet device, wherein the wall type air inlet device is used for being installed on a window or in a range of 0.5 m away from the outer frame of the window.

For a better understanding and an implementation, the present invention is described in detail below with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic structural diagram of a fresh air system according to the first embodiment;

FIG. 2 is a schematic diagram of an electrical connection of the fresh air system according to the first embodiment;

fig. 3 is a schematic view illustrating the flow direction of the air flow when the fresh air system performs the fresh air independent operation mode according to the first embodiment;

FIG. 4 is a schematic view of the flow direction of the air flow when the fresh air system according to the first embodiment performs the independent exhaust operation mode;

fig. 5 is a schematic view illustrating the flow direction of the air flow when the fresh air system performs the operation mode of the heat exchange function according to the first embodiment;

fig. 6 is a schematic view illustrating the flow direction of the air flow when the fresh air system performs the indoor circulation operation mode according to the first embodiment;

fig. 7 is a schematic view of the flow direction of the air flow when the fresh air system executes the full air port exhaust operation mode according to the first embodiment;

FIG. 8 is a schematic structural diagram of a fresh air system according to the second embodiment;

FIG. 9 is a cross-sectional view A-A of FIG. 8;

FIG. 10 is a cross-sectional view B-B of FIG. 8;

reference numerals:

10. a fresh air duct; 11. a raindrop detection module; 12. a first air stop valve; 13. a second filtering device; 14. a first sensor module; 15. a fresh air fan; 20. an exhaust duct; 21. a first filtering device; 22. a second sensor module; 23. an exhaust fan; 30. a first conduit; 31. a second air stop valve; 32. a third air stop valve; 40. a second conduit; 41. a fourth air stop valve; 42. a motor; 43. a baffle plate; 50. a third pipeline; 51. a fifth air stop valve; 60. a control module; 70. a heat exchanger; 80. a body.

Detailed Description

Example one

A fresh air system, which is shown in fig. 1 and fig. 2, comprises a fresh air pipeline 10, an exhaust pipeline 20, a first pipeline 30 and a control module 60. The fresh air duct 10 is used for sending outdoor air into a room, and specifically, a first air stop valve 12 and a fresh air fan 15 are sequentially arranged on the fresh air duct 10 along a direction in which air flows from the outside to the inside of the fresh air duct 10. The exhaust duct 20 is used to exhaust indoor air to the outside, and an exhaust fan 23 is provided on the exhaust duct 20. One end of the first pipeline 30 is arranged between the first air stop valve 12 and the fresh air fan 15, the other end of the first pipeline 30 is communicated with the air inlet side of the exhaust fan 23, and the first pipeline 30 is provided with a second air stop valve 31. The control module 60 is electrically connected to the first air stop valve 12, the fresh air fan 15, the exhaust fan 23, and the second air stop valve 31, respectively.

When new trend is sent into to indoor to needs, close air exhaust fan 23, second ending air valve 31, open first ending air valve 12, start new trend fan 15, under new trend fan 15's effect, outdoor air can get into new trend pipeline 10, and the air flows to indoor behind first ending air valve 12, the new trend fan 15 in proper order to send into the new trend indoor.

When the turbid air in the room needs to be discharged, the first air stop valve 12, the second air stop valve 31 and the fresh air fan 15 are closed, and the exhaust air fan 23 is started. Under the action of the exhaust fan 23, the indoor air enters the exhaust duct 20, passes through the exhaust fan 23 and flows to the outside, and the turbid air in the room is exhausted.

When fresh air needs to be fed into the room and turbid air in the room is discharged, the second air stop valve 31 is closed, the first air stop valve 12 is opened, and the fresh air fan 15 and the exhaust air fan 23 are started. Under the action of the fan, outdoor air flows to the indoor from the fresh air pipeline 10, and indoor air flows to the outdoor from the exhaust pipeline 20, so that the purposes of feeding outdoor fresh air and discharging indoor dirty air are achieved simultaneously.

When the outdoor temperature is lower than minus 0 ℃ and fresh air needs to be fed into the room, the first air stop valve 12 and the fresh air fan 15 are closed, the second air stop valve 31 is opened, and the exhaust fan 23 is started. Under the action of the exhaust fan 23, the indoor air can enter the exhaust duct 20 and the fresh air duct 10 simultaneously. The air introduced into the exhaust duct 20 passes through the exhaust fan 23 and flows to the outside. The air entering the fresh air duct 10 flows into the exhaust duct 20 from the first duct 30, and then flows to the outside through the exhaust fan 23. All indoor air ports are used as air outlets, indoor polluted air is discharged to the outside through the air exhaust fan 23, so that negative pressure is formed indoors, outdoor air can flow into the indoor space through a door gap or a wall air port device, and therefore the purposes of sending outdoor fresh air and discharging indoor polluted air are achieved at the same time.

In addition, it should be noted that the fresh air fan 15 may also be disposed on the air intake side of the first air stop valve 12. No matter whether the fresh air fan 15 is arranged on the air outlet side of the first air stop valve 12 or on the air inlet side of the first air stop valve 12, the two ends of the first pipeline 30 are only required to be respectively connected to the air inlet side of the exhaust fan 23 and the air outlet side of the first air stop valve 12, so that the air outlet of the fresh air pipeline 10 can be used as an air outlet.

Referring to fig. 1 and 2, in order to exhaust sufficient air quantity from the exhaust fan 23 to form sufficient negative pressure in the room, the fresh air system further includes a second duct 40. One end of the second pipeline 40 is arranged between the third air stop valve 32 and the fresh air fan 15, the other end of the second pipeline 40 is communicated to the indoor, a fourth air stop valve 41 is arranged on the second pipeline 40, and indoor air can flow into the first pipeline 30 through the fresh air fan 15 and the second pipeline 40 respectively by opening the fourth air stop valve 41. Further optimize, one end of the second pipeline 40 is arranged between the third air stop valve 32 and the fresh air fan 15, and the other end of the second pipeline 40 is arranged at the air outlet side of the fresh air fan 15, so that the fresh air pipeline 10 and the second pipeline 40 share one air port in the room, and the whole structure of the fresh air system is simplified.

Referring to fig. 1 and 2, it is considered that the polluted air in the exhaust duct 20 and the polluted air in the first duct 30 may be re-introduced into the room by the fresh air fan 15 when the fresh air fan 15 is operated. In order to solve this problem, a third air stop valve 32 is further mounted on the first duct 30, and the third air stop valve 32 is disposed on the air outlet side of the second air stop valve 31. Through set up two ending blast valves on first pipeline 30, help improving first pipeline 30's leakproofness, avoid contaminated air to be sent into indoor by new trend fan 15 again. And when one air stop valve is damaged, the other air stop valve can work, so that the influence of the damage of the air stop valve on the normal work of the fresh air system is effectively avoided.

Referring to fig. 1 and 2, the fresh air system further includes a third duct 50. One end of the third pipeline 50 is arranged between the first air stop valve 12 and the fresh air fan 15, and the other end of the third pipeline 50 is arranged between the exhaust air fan 23 and the air inlet of the exhaust pipeline 20. A fifth air stop valve 51 is provided in the third duct 50.

Further, a first filter device 21 is provided on the intake side of the exhaust fan 23. The third duct 50 is located between the exhaust fan 23 and the first filter device 21 at the connection of the exhaust duct 20, and by this design, the first filter device 21 can filter the air flowing from the indoor to the outdoor, and the first filter device 21 can also filter the air flowing back from the indoor to the indoor. Specifically, the first filter device 21 includes at least one primary filter screen. In view of less indoor air pollution, the first filter device 21 is a primary filter screen in the present embodiment.

Further, a second filter device 13 is disposed between the first air stop valve 12 and the fresh air fan 15. The third pipeline 50 is located between the first air stop valve 12 and the second filter device 13 at the connection position of the fresh air pipeline 10, and by the design, the second filter device 13 can filter the air whether the air is outdoor air or the air which flows into the room again, so that the freshness of the air can be improved. Specifically, according to the direction of the gas flow to the fresh air fan 15, the second filtering device 13 includes a primary filter screen, a high-efficiency filter screen and an activated carbon filter screen which are sequentially arranged between the first air stop valve 12 and the fresh air fan 15. The primary filter screen filters dust particles more than 5 mu m in the air firstly, then the particles more than 0.3 mu m in the high-efficiency filter screen filtered air, and the active carbon filter screen goes out stink and toxic gas in the air at last, guarantees the freshness of air effectively, improves user experience.

Referring to fig. 1 and 2, the fresh air system further includes a heat exchanger 70. The fresh air duct 10 and the exhaust air duct 20 are connected to the heat exchanger 70 to realize heat exchange of the air. Specifically, the heat exchanger 70 is also disposed between the first filter device 21 and the exhaust fan 23, and the heat exchanger 70 is disposed between the second filter device 13 and the fresh air fan 15. And, the third duct 50 is located between the heat exchanger 70 and the first filtering device 21 at the connection on the exhaust duct 20. Through the design, the first filter device 21 and the second filter device 13 can be used for protecting the heat exchanger 70, which helps to reduce the accumulation of particles in the air in the heat exchanger 70 and prolong the service life of the heat exchanger 70.

Referring to fig. 1 and 2, the fresh air system further includes a first sensor module 14, a second sensor module 22, a raindrop detection module 11, and a control module 60. Wherein the first sensor module 14 is arranged in the pipeline between the primary filter screen and the high efficiency filter screen. The second sensor module 22 is disposed in the conduit between the heat exchanger 70 and the first filter device 21. The first sensor module 14 and the second sensor module 22 are integrated with a temperature sensor, a humidity sensor, a PM2.5 sensor, and a carbon dioxide sensor, and the first sensor module 14 and the second sensor module 22 can be used for detecting temperature, humidity, PM2.5, and carbon dioxide in gas. Raindrop detection module 11 sets up in the air intake department of fresh air pipeline 10, specifically, raindrop detection module 11 sets up between the air intake of fresh air pipeline 10 and first stagnant air valve 12, and raindrop detection module 11 is used for detecting whether there is liquid in the air intake department of fresh air pipeline 10. The control module 60 is electrically connected to the fresh air fan 15, the exhaust fan 23, the first air stop valve 12, the second air stop valve 31, the third air stop valve 32, the fourth air stop valve 41, the fifth air stop valve 51, the first sensor module 14, the second sensor module 22, and the raindrop detection module 11, respectively, and the control module 60 controls the operation of the fresh air system according to the detection signals of the first sensor module 14, the second sensor module 22, and the raindrop detection module 11.

The control module 60 controls the operation mode, the air volume and the like of the fresh air system according to the temperature, the humidity, the PM2.5 and the carbon dioxide in the air. And, whether outdoor raining or snowing is indirectly judged by judging whether liquid exists at the air inlet of the fresh air pipeline 10, and when the liquid is detected, the first air stop valve 12 is closed, so that the product fault caused by rainwater flowing into the host of the fresh air system or snowflakes being directly sucked into the host of the fresh air system is effectively avoided.

The fresh air system described in this embodiment has five operation modes, which are a fresh air independent operation mode, an air exhaust independent operation mode, a heat exchange function operation mode, an indoor circulation operation mode, and a full air outlet air exhaust operation mode. The flow direction of the air in the different operation modes is described in detail below.

Referring to fig. 3, when the fresh air system executes the fresh air independent operation mode, the fresh air fan 15 is started, the first air stop valve 12 is opened, and the exhaust air fan 23, the second air stop valve 31, the third air stop valve 32, the fourth air stop valve 41 and the fifth air stop valve 51 are closed. Outdoor air enters a fresh air pipeline 10, and the outdoor air sequentially passes through a raindrop detection module 11, a first air stop valve 12, a primary filter screen, a first sensor module 14, a high-efficiency filter screen, an activated carbon filter screen, a heat exchanger 70 and a fresh air fan 15 and then enters the room, so that the function of sending fresh air into the room is realized.

Referring to fig. 4, when the fresh air system executes the independent exhaust operation mode, the exhaust fan 23 is started, and the fresh air fan 15, the first air stop valve 12, the second air stop valve 31, the third air stop valve 32, the fourth air stop valve 41 and the fifth air stop valve 51 are closed. The indoor air enters the exhaust duct 20, and flows to the outdoor after sequentially passing through the primary filter screen, the second sensor module 22, the heat exchanger 70 and the exhaust fan 23, so that the function of exhausting the indoor waste gas to the outdoor is realized.

Referring to fig. 5, when the fresh air system executes the heat exchange function operation mode, the fresh air fan 15 and the exhaust air fan 23 are started, the first air stop valve 12 is opened, and the exhaust air fan 23, the second air stop valve 31, the third air stop valve 32, the fourth air stop valve 41 and the fifth air stop valve 51 are closed. Outdoor air passes through raindrop detection module 11, first stagnant air valve 12, primary filter screen, first sensor module 14, high-efficient filter screen, active carbon filter screen, heat exchanger 70, new trend fan 15 in proper order and gets into indoor. The indoor air flows to the outdoor after sequentially passing through the primary filter screen, the second sensor module 22, the heat exchanger 70 and the exhaust fan 23. Meanwhile, at the heat exchanger 70, the outdoor air exchanges heat with the indoor air, and the outdoor air absorbs heat of the indoor air, thereby performing a function of recovering heat of the indoor air.

Referring to fig. 6, when the fresh air system executes the indoor circulation operation mode, the fresh air fan 15 is started, the fifth air stop valve 51 is opened, and the exhaust air fan 23, the first air stop valve 12, the second air stop valve 31, the third air stop valve 32 and the fourth air stop valve 41 are closed. The indoor air passes through the air inlet of the exhaust duct 20, the primary filter screen, the second sensor module 22, the fifth air stop valve 51, the primary filter screen, the first sensor module 14, the efficient filter screen, the activated carbon filter screen, the heat exchanger 70 and the fresh air fan 15 in sequence and then enters the room again, and the function of indoor air internal circulation is achieved.

Referring to fig. 7, when the fresh air system executes the full-air-port air exhaust operation mode, the air exhaust fan 23 is started, the second air stop valve 31, the third air stop valve 32 and the fourth air stop valve 41 are opened, and the fresh air fan 15, the first air stop valve 12 and the fifth air stop valve 51 are closed. A part of the indoor air flows to the outdoor after passing through the primary filter screen, the second sensor module 22, the heat exchanger 70 and the exhaust fan 23 in sequence. A part of indoor air flows to the outdoor after passing through the air outlet of the fresh air pipeline 10, the fresh air fan 15, the third air stop valve 32, the second air stop valve 31 and the exhaust air fan 23 in sequence. And a part of indoor air flows to the outside after sequentially passing through the air outlet of the fresh air duct 10, the fourth air stop valve 41, the third air stop valve 32, the second air stop valve 31 and the exhaust fan 23. All indoor air ports are used as air outlets, indoor polluted air is discharged to the outside through the air exhaust fan 23, so that negative pressure is formed indoors, outdoor air can flow into the indoor space through a door gap or a wall air port device, and therefore the purposes of sending outdoor fresh air and discharging indoor polluted air are achieved at the same time.

Example two

A fresh air system, see fig. 8, 9 and 10, wherein the arrows in fig. 9 and 10 are directed to the air flow direction. The fresh air system described in this embodiment is different from the fresh air system described in the first embodiment in that: the fresh air system further comprises a machine body 80, and the fresh air system in the first embodiment is integrated in the machine body 80.

Specifically, the heat exchanger 70 is disposed at the middle of the machine body 80. The air inlet and the air outlet of the fresh air pipeline 10 are respectively arranged on the left side surface and the right side surface of the machine body 80; according to the direction of outdoor air flowing into the room, the raindrop detection module 11, the first air stop valve 12, the primary filter screen, the first sensor module 14, the efficient filter screen, the activated carbon filter screen, the heat exchanger 70 and the fresh air fan 15 are sequentially installed on the fresh air pipeline 10. An air inlet and an air outlet of the exhaust duct 20 are respectively arranged on the right side surface and the left side surface of the machine body 80, the air inlet of the exhaust duct 20 is arranged opposite to the air inlet of the fresh air duct 10, and the air outlet of the exhaust duct 20 is arranged opposite to the air outlet of the fresh air duct 10; the primary filter net, the second sensor module 22, the heat exchanger 70, and the exhaust fan 23 are installed in sequence on the exhaust duct 20 in the direction in which the indoor air flows to the outside. The first pipeline 30 is arranged below the fresh air pipeline 10 and the exhaust pipeline 20, a pipe orifice at one end of the first pipeline 30 is communicated with the air inlet side of the exhaust fan 23, and a second air stop valve 31 is arranged at the pipe orifice at the end; the other end pipe orifice of the first pipeline 30 is communicated with the air inlet side of the fresh air fan 15, and a third air stop valve 32 is arranged at the pipe orifice of the other end. A pipe orifice at one end of the second pipeline 40 is communicated with the air inlet side of the fresh air fan 15; the other end pipe orifice of the second pipeline 40 is communicated with the air outlet of the fresh air pipeline 10, the pipe orifice of the section is arranged at the bottom of the air outlet of the fresh air pipeline 10, and a fourth air stop valve 41 is arranged at the pipe orifice of the end. The third pipeline 50 is arranged below the fresh air pipeline 10 and the exhaust pipeline 20, and a pipe orifice at one end of the third pipeline 50 is connected to a pipeline between the first air stop valve 12 and the primary filter screen; the other end pipe orifice of the third pipe 50 is connected to the pipe orifice of the exhaust pipe 20 where the second sensor module 22 is installed, and a fifth air stop valve 51 is installed at the pipe orifice of the end.

In the present embodiment, the first air stop valve 12, the second air stop valve 31, the third air stop valve 32, and the fifth air stop valve 51 have the same structure as the fan blade structure of the cabinet air conditioner in the prior art, and the opening or closing of the valves is realized by controlling the turning of the fan blade, which is not discussed in detail herein. However, the above-mentioned first, second, third, fourth and fifth air stop valves 12, 31, 32, 41 and 51 may be configured by other switch structures that can open and close the pipeline, for example: electrically operated valves, gas valves, etc.

In the present embodiment, the fourth air stop valve 41 includes a motor 42 and a damper 43. The motor 42 is fixed to the body 80. The baffle 43 is fixed on the output shaft of the motor 42, the baffle 43 covers the connecting port of the second pipeline 40 on the fresh air pipeline 10, and the connecting port of the second pipeline 40 on the fresh air pipeline 10 is arranged on the bottom surface of the pipe wall on the air outlet side of the fresh air fan 15. When the fourth air stop valve 41 needs to be opened, the motor 42 drives the baffle 43 to rotate to open the connection port, and the indoor air can directly flow into the second pipeline 40 from the connection port after entering the fresh air pipeline 10 and then flow into the first pipeline 30 from the second pipeline 40. Moreover, by such design, the fresh air duct 10 and the second duct 40 can share one opening on the machine body 80, so that the whole volume of the fresh air system can be reduced, and the structure is simplified.

In addition, in order to reduce the particles in the air entering the fan, the air inlet of the fresh air fan 15 faces downward vertically, and the air inlet of the exhaust air fan 23 faces downward vertically. In order to make the air flow circulate more smoothly in the duct, a nozzle at one end of the first duct 30 corresponds to the air inlet of the fresh air fan 15, and a nozzle at the other end of the first duct 30 corresponds to the air inlet of the exhaust air fan 23.

EXAMPLE III

A new trend system, its difference with the new trend system of embodiment one or embodiment two lies in: and a wall type air vent device (not shown) which can be arranged on the window or a wall within 0.5 m from the window frame. Among them, the wall type air inlet device is a commercially available wall type air inlet device, and the specific structure thereof will not be discussed herein. The window may be a window that can be ventilated, such as a sliding window, a tilt-up window, a shutter, etc., or a window that cannot be ventilated, such as a curtain wall, etc. Through the design, on one hand, the air supply or exhaust effect is better; on the other hand, the installation of the air opening needs to be drilled on the wall, and considering that no bearing wall is generally arranged near the window, the drilling and the installation of the air opening near the window cannot cause great influence on the building.

Example four

A new trend system, its difference with the new trend system of embodiment one lies in: a third filtering device (not shown) is arranged between the exhaust fan 23 and the second air stop valve 31, the third filtering device is arranged on the first pipeline 30, and the third filtering device comprises a primary filter screen.

EXAMPLE five

A new trend system, its difference with the new trend system of embodiment one lies in: the first duct 30 is provided on the air intake side of the second filter device 13 at the junction on the exhaust duct 20.

EXAMPLE six

A new trend system, its difference with the new trend system of embodiment one lies in: and a heating device (not shown) arranged in the fresh air pipeline 10 and used for heating outdoor air, wherein the heating device is arranged between the first air stop valve 12 and the heat exchanger 70, and specifically, the heating device is positioned between the primary filter screen and the high-efficiency filter screen in the second filter device 13. Through this design, heating device heats the new trend that gets into new trend pipeline 10, can maintain indoor temperature on the one hand, and on the other hand can avoid outdoor air to condense in heat exchanger 70 when new trend system carries out heat exchange function mode of operation.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims (10)

1. The utility model provides a new trend system, its characterized in that, new trend system includes:

the fresh air pipeline (10) is used for sending outdoor air into a room, and a fresh air fan (15) and a first air stop valve (12) are arranged in the fresh air pipeline;

an exhaust duct (20) for discharging indoor air to the outside, in which an exhaust fan (23) is provided;

a first duct (30) having one end connected to an air intake side of the exhaust fan (23);

and a second pipeline (40) with one end connected with the first pipeline (30) and the other end used for being connected to the indoor space, and a fourth air stop valve (41) is arranged in the second pipeline.

2. The fresh air system of claim 1, wherein: the air inlet side of the fresh air fan (15) is provided with a first air stop valve (12), one end of the second pipeline (40) is connected with the other end of the first pipeline (30), and the other end of the second pipeline is connected to the air outlet side of the fresh air fan (15).

3. The fresh air system of claim 2, wherein: one end of the first pipeline (30) is connected to the air inlet side of the exhaust fan (23), and the other end of the first pipeline is connected to the air inlet side of the second pipeline (40) and the air inlet side of the fresh air fan (15) respectively.

4. The fresh air system of claim 3, wherein: and a second air stop valve (31) is arranged on a pipeline, connected to the air inlet side of the fresh air fan (15), of the first pipeline (30).

5. The fresh air system of claim 4, wherein: and a third air stop valve (32) is also arranged on the pipeline of the first pipeline (30) connected to the air inlet side of the fresh air fan (15).

6. The fresh air system of claim 1, wherein: the air inlet side of new trend fan (15) is equipped with first stagnant air valve (12), still includes third pipeline (50), the one end setting of third pipeline (50) is in first stagnant air valve (12) with between new trend fan (15), the other end of third pipeline (50) is connected to exhaust pipe (20), be equipped with fifth stagnant air valve (51) on third pipeline (50).

7. The fresh air system of claim 6, wherein: the air inlet side of the exhaust fan (23) is provided with a first filtering device (21) for filtering air, and the joint of the third pipeline (50) and the exhaust pipeline (20) is arranged between the exhaust fan (23) and the first filtering device (21).

8. The fresh air system of claim 7, wherein: a second filtering device (13) for filtering air is arranged between the fresh air fan (15) and the first air stop valve (12), and the joint of the third pipeline (50) and the fresh air pipeline (10) is positioned between the first air stop valve (12) and the second filtering device (13).

9. The fresh air system of claim 8, wherein: the novel air conditioner is characterized by further comprising a heat exchanger (70), wherein the heat exchanger (70) is arranged between the fresh air fan (15) and the second filtering device (13), the heat exchanger (70) is further arranged between the exhaust air fan (23) and the first filtering device (21), and the joint of the third pipeline (50) and the exhaust air pipeline (20) is arranged between the heat exchanger (70) and the first filtering device (21).

10. The fresh air system of claim 1, wherein:

the rain drop detection device is characterized by further comprising a machine body (80), wherein a fresh air pipeline (10), an exhaust pipeline (20), a first pipeline (30), a second pipeline (40), a third pipeline (50), a control module (60) and a rain drop detection module (11) are arranged in the machine body (80);

along indoor direction of outdoor air inflow, be provided with according to the preface on new trend pipeline (10) raindrop detection module (11), first stagnant air valve (12), second filter equipment (13), heat exchanger (70), new trend fan (15), raindrop detection module (11) set up the air intake department of new trend pipeline (10), raindrop detection module (11) are used for detecting whether there is liquid in the air intake department of new trend pipeline (10), second filter equipment (13) include along the indoor direction of outdoor air inflow primary filter screen, high efficiency filter screen, the active carbon filter screen that set up according to the preface the primary filter screen with be provided with first sensor module (14) between the high efficiency filter screen, first sensor module (14) are used for detecting the temperature of the gas in new trend pipeline (10), At least one parameter of humidity, PM2.5 and carbon dioxide, and a heating device for heating gas is arranged between the primary filter screen and the high-efficiency filter screen;

along the direction from indoor air to outdoor, a first filtering device (21), a second sensor module (22), the heat exchanger (70) and the exhaust fan (23) are sequentially arranged on the exhaust duct (20), the first filtering device (21) comprises a primary filter screen, and the second sensor module (22) is used for detecting at least one parameter of temperature, humidity, PM2.5 and carbon dioxide of the air in the exhaust duct (20);

the first pipeline (30) is arranged below the fresh air pipeline (10) and the exhaust pipeline (20), a second air stop valve (31) and a third air stop valve (32) are arranged in the first pipeline (30), a first end of the first pipeline (30) is arranged between the exhaust fan (23) and the heat exchanger (70), and a second end of the first pipeline (30) is respectively connected between the fresh air fan (15) and the heat exchanger (70) and on the second pipeline (40);

the second pipeline (40) is arranged below the fresh air pipeline (10), a fourth air stop valve (41) is arranged in the second pipeline (40), the first end of the second pipeline (40) is connected with the second end of the first pipeline (30), and the second end of the second pipeline (40) is connected to the air outlet side of the fresh air fan (15);

the third pipeline (50) is arranged below the fresh air pipeline (10) and the exhaust air pipeline (20), a fifth air stop valve (51) is arranged in the third pipeline (50), a first end of the third pipeline (50) is arranged between the first air stop valve (12) and the second filtering device (13), and a second end of the third pipeline (50) is arranged between the heat exchanger (70) and the first filtering device (21);

the control module (60) is respectively electrically connected with the fresh air fan (15), the exhaust fan (23), the first air stop valve (12), the second air stop valve (31), the third air stop valve (32), the fourth air stop valve (41), the fifth air stop valve (51), the first sensor module (14), the second sensor module (22) and the raindrop detection module (11);

the air inlet of the fresh air fan (15) faces downwards vertically, the air inlet of the exhaust fan (23) faces downwards vertically, the connection port of the first pipeline (30) and the fresh air pipeline (10) corresponds to the air inlet of the fresh air fan (15), and the connection port of the first pipeline (30) and the exhaust pipeline (20) corresponds to the air inlet of the exhaust fan (23);

an opening is formed in the pipe wall of the air outlet side of the fresh air fan (15), the fourth air stop valve (41) comprises a baffle (43) and a motor (42), the baffle (43) covers the opening, the motor (42) is installed on the pipe wall, and the motor (42) drives the baffle (43) to rotate so as to open the opening;

the window curtain wall type air inlet device is characterized by further comprising a wall type air inlet device, wherein the wall type air inlet device is used for being installed on a window or in a range of 0.5 m away from the outer frame of the window.

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