CN112923488A

CN112923488A - Air outlet structure and air treatment device

Info

Publication number: CN112923488A
Application number: CN202110353277.2A
Authority: CN
Inventors: 唐冠恒; 梁石昌; 林伟源
Original assignee: ZHONGSHAN WONDERFUL ELECTRONIC THERMAL-CONTROL TECHNOLOGY CO LTD
Current assignee: ZHONGSHAN WONDERFUL ELECTRONIC THERMAL-CONTROL TECHNOLOGY CO LTD
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2021-06-08

Abstract

The invention discloses an air outlet structure and an air processing device. The air outlet structure comprises a first fan and a pressure expansion cavity; the pressure expansion cavity is communicated with an air outlet of the first fan, and the radial size of the section of the pressure expansion cavity is larger than the inner diameter size of the air outlet in the air outlet direction of the airflow; the pressure expansion cavity is provided with a sinking groove sinking relative to the air outlet. The air outlet structure in the technical scheme of the invention increases the static pressure of the airflow, reduces the flow resistance of the airflow in the subsequent air channel part, reduces the wind power loss, reduces the impact of the airflow on the air channel part due to the reduction of the wind speed, and achieves the effect of reducing the noise. Simultaneously, the diffusion chamber includes for the sunken heavy groove of air outlet in this embodiment, and the difference in height between make full use of air outlet and the first fan diapire when to the air-out air current deceleration pressure boost for structural layout is compacter.

Description

Air outlet structure and air treatment device

Technical Field

The invention relates to the technical field of air conditioning, in particular to an air outlet structure and an air processing device.

Background

Along with the improvement of living standard of people, people demand comfortable energy conservation more and more, passive room is as adapting to climatic feature and natural condition, and the building that has heat preservation heat-proof quality and higher gas tightness is more and more receiving people's favor.

In the related art, in order to ensure the air quality inside the passive room and the indoor and outdoor air pressure balance, an air treatment device capable of ventilating the passive room is usually provided, however, the air duct structure of the existing air treatment device easily generates a large flow resistance to the air flow, resulting in a technical problem of wind power loss.

Summary of the invention

The invention mainly aims to provide an air duct structure, which aims to reduce airflow flowing resistance in an air treatment device, reduce wind power loss and improve the wind energy utilization rate.

In order to achieve the purpose, the air outlet structure provided by the invention comprises a first fan and a pressure expansion cavity; the pressure expansion cavity is communicated with an air outlet of the first fan, and the radial size of the section of the pressure expansion cavity is larger than the inner diameter size of the air outlet in the air outlet direction of the airflow; the pressure expansion cavity is provided with a sinking groove sinking relative to the air outlet.

In an embodiment of the present invention, a radial dimension of the air outlet is defined as H0, and a depth dimension of the sinking groove relative to the air outlet is defined as H1, which satisfies: h1 is more than or equal to 0.5H0 and less than or equal to 1.5H 0; the width of the sink groove in the air outlet direction is defined as W1, and the following conditions are met: w1 is more than or equal to 0.1H0 and less than or equal to 0.5H 0.

In an embodiment of the invention, the inner diameter of the cross section of the sinking groove gradually increases from the side connected with the air outlet to the direction away from the air outlet.

In an embodiment of the invention, the pressure expansion cavity is provided with an air passing opening, the air passing opening is positioned at the upper edge of the side wall of the sinking groove far away from the air outlet, and the lower edge surface of the air passing opening is higher than the middle part or the position above the middle part of the air outlet;

the air inlet is provided with an installation position for installing an air treatment module, and the air treatment module is arranged in an upward extending mode relative to the sinking groove.

In an embodiment of the present invention, the air outlet structure further includes an air supply cavity communicated with the air passing opening, and a cavity bottom wall of the air supply cavity is formed by extending a lower edge surface of the air passing opening along a horizontal direction.

In one embodiment of the invention, the air supply cavity comprises a flow guide section communicated with the air passing opening and a uniform section used for being connected with a heat exchanger, and the uniform section is connected with one side of the flow guide section, which is far away from the air passing opening; the inner diameter of the cross section of the flow guide section is gradually reduced from the air passing opening to the uniform section.

In an embodiment of the present invention, a fixing portion for installing an air detection device is disposed in the air supply cavity, and the air detection device includes an air pressure sensor and/or a temperature sensor and/or a humidity sensor.

In an embodiment of the invention, the first fan is a centrifugal fan, and a fan shaft of the first fan is horizontally or vertically arranged;

and/or the air outlet structure further comprises a fan room for installing the first fan, the fan room is separated from the pressure expansion cavity through a partition plate, and the air outlet side of the first fan penetrates through the partition plate and extends into the pressure expansion cavity.

To achieve the above object, the present invention further provides an air treatment device comprising

A housing;

the fresh air module comprises a fresh air duct and the air outlet structure, the fresh air duct is arranged in the shell, and the air outlet structure is arranged in the fresh air duct;

the air exhaust module comprises an air exhaust air duct and an air exhaust fan arranged in the air exhaust air duct; and

the fresh air duct and the exhaust air duct are crossed and penetrated in the total heat exchanger, and the air supply cavity of the air outlet structure is arranged above the air inlet side of the exhaust fan.

In an embodiment of the present invention, the air treatment device further includes:

the indoor circulating air module is provided with a circulating air duct, and the circulating air duct is provided with a circulating air inlet communicated with the indoor space; and

the bypass valve is used for communicating or separating the circulating air duct and the fresh air duct;

when the bypass valve is opened, the first fan can drive indoor air to sequentially pass through the circulating air inlet and the bypass valve to enter the fresh air duct so as to defrost the full heat exchanger.

According to the air outlet structure in the technical scheme, the pressure expansion cavity is arranged at the air outlet of the first fan, the radial dimension of the cross section of the pressure expansion cavity is larger than the inner diameter dimension of the air outlet in the direction of air outlet flow, when the air flow flows from a smaller caliber to a larger caliber, the air speed is reduced, partial kinetic energy of the air flow is converted into potential energy, the static pressure of the air flow is increased, the flow resistance of the air flow in subsequent air channel parts is reduced, the wind power loss is reduced, the impact of the air flow on the air channel parts is reduced due to the reduction of the air speed, and the effect of reducing noise is achieved. Simultaneously, the diffusion chamber includes for the sunken heavy groove of air outlet in this embodiment, and the difference in height between make full use of air outlet and the first fan diapire when to the air-out air current deceleration pressure boost for structural layout is compacter.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural view of an air outlet structure of an embodiment of an air treatment device according to the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at M;

FIG. 3 is a top view of an embodiment of the air treatment device of the present invention;

FIG. 4 is a cross-sectional view taken at A-A of FIG. 3;

FIG. 5 is a cross-sectional view taken at B-B of FIG. 3;

FIG. 6 is a cross-sectional view taken at C-C of FIG. 3;

FIG. 7 is a schematic view of a fresh air guiding structure of an embodiment of the air treatment device of the present invention;

FIG. 8 is a schematic view of the air treatment device of the present invention during defrosting or deicing.

The reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides an air outlet structure, which is applied to an air treatment device and aims to reduce airflow resistance inside the air treatment device, reduce wind power loss, reduce wind speed, improve airflow static pressure and reduce noise. It can be understood that the air outlet structure can be a component in a fresh air module in the air processing device, can also be a structure in an indoor circulating module or an air exhaust module, and the like, and the air outlet structure can be arranged in an air duct component with air flow. The following description will be given taking an example in which the air outlet structure is provided in a fresh air module of an air processing apparatus.

In the embodiment of the present invention, as shown in fig. 1 to 3 and fig. 6, the air outlet structure includes a first fan 120 and a diffuser 200; the diffusion cavity 200 is communicated with the air outlet of the first fan 120, and the radial dimension of the cross section of the diffusion cavity 200 is larger than the inner diameter dimension of the air outlet in the air outlet direction of the airflow; the pressure-expanding chamber 200 has a sink 210 that is sunk with respect to the outlet port.

The first fan 120 is used for driving the airflow on the air inlet side of the first fan 120 to blow out from the air outlet, the pressure expansion cavity 200 is arranged at the air outlet, the radial dimension of the cross section of the pressure expansion cavity 200 is larger than the inner diameter dimension of the air outlet, so that the airflow flows from a smaller cross section caliber to a larger cross section caliber, the speed of the airflow is reduced due to the increase of the flowing sectional area of the air, and partial kinetic energy of the airflow is converted into potential energy, so that the static pressure of the airflow is increased, the effect of pressure expansion of the outlet airflow of the first fan 120 is achieved, the flow resistance of the airflow in subsequent air duct parts is reduced, the wind power loss is reduced, meanwhile, due to the reduction of the wind speed, the impact of the airflow on the air duct parts is reduced, and.

When the air outlet structure is applied to an air processing device, the first fan 120 is installed in the fan chamber 130, and the diffusion cavity 200 is provided with a sink groove 210 sinking relative to the air outlet, so that after air flow is blown out from the air outlet, the air flow can directly enter the diffusion cavity 200 with the sink groove 210 to perform speed reduction and pressurization, and then flows to a subsequent air flow channel from the air inlet 201 of the diffusion cavity 200. It can be understood that the airflow space increased by the diffusion chamber 200 relative to the air outlet may include a space above or beside the air outlet, a space below the sink 210, and the like, in addition to the space of the sink 210. The shape and structure of the diffusion chamber 200 may be determined according to actual conditions, and may be a regular shape such as a cube, a cuboid, a cylinder, a prism, or an irregular shape, etc., which is not limited herein, as long as it is ensured that the radial dimension of the cross section of the diffusion chamber 200 is greater than the caliber dimension of the air outlet in the direction of the outlet airflow. In the practical application process, the air duct structure of the air treatment device is provided with the heat exchanger, and the narrow-slit fluid air duct exists in the heat exchanger, so that the flow resistance is large, and the flow of air is influenced, therefore, the pressure expansion cavity 200 is arranged at the air outlet to reduce the speed and increase the pressure, so that the resistance of air flow is reduced, and the air can smoothly pass through the heat exchanger.

It can be understood that, the air outlet usually will have an interval with the diapire of first fan 120, through setting up the heavy groove 210 that sinks for the air outlet, make full use of the difference in height between air outlet and the first fan 120 diapire for structural layout can play the effect to the speed reduction pressure boost of air-out air current when more compact.

Taking an example of an air processing device with a fresh air module and an exhaust module as an example, an air outlet structure is arranged in the fresh air module, a fresh air duct 110 and an exhaust air duct 610 are in heat exchange connection through a total heat exchanger 500, so that introduced fresh air can exchange heat with exhausted air, and the heat energy utilization rate is improved, on the basis, because the fresh air duct 110 and the exhaust air duct 610 are crossed and arranged in the total heat exchanger 500, an air inlet surface of the total heat exchanger 500 is positioned above, and an air outlet surface is positioned below, when the first fan 120 is installed in the fan chamber 130, a height difference exists between an air outlet of the first fan 120 and the air inlet surface of the total heat exchanger 500, at this time, the airflow flow direction from the first fan 120 to the total heat exchanger 500 is a broken line flow direction, and because the distance between the heat exchange surfaces inside the total heat exchanger 500 is small, the air flow resistance inside is large, based on this, a pressure expansion cavity 200 is arranged at the air outlet of, make the air current that blows off from the air outlet can be in diffusion chamber 200 the deceleration pressure boost, and diffusion chamber 200 includes the heavy groove 210 that sinks for the air outlet to make full use of the difference in height between air outlet and the first fan 120 diapire, increase the cross-sectional dimension of diffusion chamber 200, with the effect of further realizing reducing the wind speed, improving static pressure and noise reduction.

Optionally, a partition 240 is disposed between the fan chamber 130 where the first fan 120 is located and the diffusion chamber 200, and the partition 240 separates the air inlet side and the air outlet side of the first fan 120 to prevent short circuit of air backflow, and on this basis, the air outlet side of the first fan 120 passes through the partition 240 to communicate with the diffusion chamber 200, and then the partition 240 may form a side wall of the sink 210 on a side close to the air outlet, so as to simplify the structure.

According to the air outlet structure in the technical scheme, the pressure expansion cavity 200 is arranged at the air outlet of the first fan 120, the radial dimension of the cross section of the pressure expansion cavity 200 is larger than the inner diameter dimension of the air outlet in the direction of air outlet flow, when the air flow flows from a smaller caliber to a larger caliber, the air speed is reduced, partial kinetic energy of the air flow is converted into potential energy, the static pressure of the air flow is increased, the flow resistance of the air flow in subsequent air channel parts is reduced, the wind power loss is reduced, the impact of the air flow on the air channel parts is reduced due to the reduction of the air speed, and the effect of reducing noise is achieved. Simultaneously, the diffusion chamber 200 includes for the sunken heavy groove 210 of air outlet in this embodiment, and the difference in height between make full use of air outlet and the first fan 120 diapire when to the air-out air current deceleration pressure boost for structural layout is compacter.

In order to ensure the speed-reducing and pressure-expanding effect on the outlet airflow, in an embodiment of the present invention, a height radial dimension of the outlet is defined as H0, and a depth dimension of the sink groove 210 sinking relative to the outlet is defined as H1, which satisfies: h1 is more than or equal to 0.5H0 and less than or equal to 1.5H 0. The width of the sink groove 210 in the air outlet direction is defined as W1, and satisfies the following conditions: w1 is more than or equal to 0.1H0 and less than or equal to 0.5H 0.

It can be understood that the size of the sinking groove 210 can be determined according to actual conditions, for example, the sinking depth of the sinking groove 210 can be equal to the distance between the air outlet and the bottom wall of the first fan 120, or can be smaller than or larger than the distance between the air outlet and the bottom wall of the first fan 120, and the width of the sinking groove 210 can also be determined according to actual conditions, as long as it is ensured that the sinking groove 210 can generate the speed-reducing and pressure-expanding effect on the outlet airflow. In this embodiment, in order to ensure the speed reduction and pressure expansion effect, the depth and the width of the sinking groove 210 are determined according to the actual caliber size of the air outlet of the first fan 120, and the sinking depth of the sinking groove 210 relative to the air outlet and the caliber size of the air outlet satisfy: 0.5H 0H 1H0, optionally, the sinking depth H1 of the sinking groove 210 may be 0.5H0, 0.6H0, 0.7H0, 0.8H0, 0.9H0, H0, 1.1H0, 1.2H0, 1.3H0, 1.4H0 or 1.5H 0. The width of the sink 210 in the air outlet direction and the caliber size of the air outlet satisfy: 0.1H 0W 1W 0, optionally the width W1 of the sink 210 can be 0.1H0, 0.2H0, 0.3H0, 0.4H0 or 0.5H 0.

It should be noted that, in the practical application process, both the sinking depth dimension of the sinking groove 210 and the width dimension of the sinking groove 210 in the air outlet direction can be determined according to the practical situation, and in this embodiment, the sinking depth dimension of the sinking groove 210 is greater than the width dimension in the air outlet direction, so that the flow path is shortened while the cross-sectional dimension is enlarged, and a better speed reduction and pressure expansion effect is achieved.

In order to further achieve the effect of speed reduction and pressure expansion, in an embodiment of the present invention, referring to fig. 1 to 3, the inner diameter of the cross section of the sinking groove 210 gradually increases from the side connected to the air outlet to the direction away from the air outlet.

In practical applications, the shape and structure of the sinking groove 210 can be determined according to practical situations, such as a regular cube, a rectangular parallelepiped, a cylinder, etc., or an irregular profile. In this embodiment, in order to further enlarge the air outlet area, the inner diameter of the cross section of the sinking groove 210 gradually increases from the side connected with the air outlet toward the direction away from the air outlet, so that the air outlet area gradually increases, the static pressure is increased while the air speed is reduced, the airflow impact is reduced, and the noise is reduced.

It can be understood that the inner diameter of the cross section of the sinking groove 210 is gradually increased, and the increasing may be achieved in various ways, for example, one side wall of the sinking groove 210 may extend outward relative to the air outlet, or both opposite side walls of the sinking groove 210 may extend outward, and when both opposite side walls of the sinking groove 210 extend outward, the inclination angles of the two side walls may be the same or different. In this embodiment, in order to improve the uniformity of the air outlet flow, two sidewalls of the sinking groove 210 may be set to different inclination angles to adapt to different air outlet intensities at the air outlet of the first fan 120.

In an embodiment of the present invention, referring to fig. 1, fig. 2 and fig. 6, the diffusion chamber 200 is provided with an air passing opening 201, the air passing opening 201 is located at an upper edge of a side wall of the sinking groove 210 far away from the air outlet, and a lower edge of the air passing opening 201 is higher than a middle portion or a position above the middle portion of the air outlet.

The diffusion cavity 200 is provided with an air inlet 201, and the air inlet 201 is connected with a subsequent air duct in the air treatment device, so that the airflow blown out from the air outlet of the first fan 120 can flow into the subsequent air duct component from the air inlet 201 after the speed reduction and diffusion of the diffusion cavity 200. The air passing opening 201 is located at the upper edge of the side wall of the sinking groove 210 far away from the air outlet, and the sinking space between the air outlet and the air passing opening 201 and the sinking groove 210 can be understood as the sinking space, so that the function of enlarging the section of the air flow blown out from the air outlet is realized, and the speed reduction and the diffusion of the air outlet flow are ensured. Optionally, in order to ensure the effective space of the sink tank 210, the lower edge of the air inlet 201 is higher than the middle part or the position above the middle part of the air outlet, so that the sink tank 210 can have a sufficient speed-reducing diffusion space.

In order to further realize the effect of reducing the speed and increasing the pressure, referring to fig. 1, 2 and 6, the air inlet 201 is provided with a mounting position 230 for mounting an air treatment functional module 300, and the air treatment functional module 300 is arranged to extend upward relative to the sinking groove 210.

It can be understood that, on the basis of the foregoing embodiment, the air passing opening 201 is disposed on the side opposite to the air outlet, and the air processing function module 300 is installed at the air passing opening 201, so that the air processing function module 300 can be disposed opposite to the wind direction to form an upward extension relative to the sink 210, thereby further enlarging the air outlet area, so that the speed reduction and pressurization effects on the air outlet flow are better, and the noise can be reduced at the same time.

In practical applications, the mounting position 230 of the air treatment function module 300 may be a slot structure, a snap structure, a hook structure or a support plate structure. In this embodiment, in order to allow the air flow to pass smoothly in consideration that the air processing function module 300 needs to perform corresponding function processing on the air flow passing through the air processing function module, the mounting position 230 of the air processing function module 300 is a sheet structure extending from two opposite sides, a station gap for mounting the air processing function module 300 is formed between the two sheet structures, and optionally, the air processing function module 300 may be connected to the sheet structure through a fastening member such as a screw or a bolt.

In an embodiment of the present invention, the air processing function module 300 is a purification module, and the purification module has a fiber layer with a fine pore size, so that the outlet airflow can be more uniform after being processed by the purification module, and the fiber layer can also play a sound absorption role to reduce noise.

In an embodiment of the present invention, the air treatment function module 300 is a heat exchange module, such as a PTC electric heating device, an infrared heating device, an electromagnetic heating device, or a resistance heating device. It can be understood, in the practical application process, handle the heat transfer of air supply air current through setting up heat exchange module, avoid when external ambient temperature is lower, the air temperature that enters into follow-up total heat exchanger 500 via the new trend air current of first fan 120 introduction crosses lowly and leads to the condition emergence of the side frosting of airing exhaust of total heat exchanger 500, in order to further guarantee the effect that total heat exchanger 500 handled the air, because electrical heating material has great heat transfer area, it makes the air-out air current can be more even after purifying module handles, the fibrous layer can also play the sound absorbing effect simultaneously, in order to reduce the noise.

In an embodiment of the present invention, referring to fig. 1 to 6, the air outlet structure further includes an air supply cavity 220 communicated with the air passing opening 201, and a cavity bottom wall of the air supply cavity 220 is formed by extending a lower edge surface of the air passing opening 201 along a horizontal direction.

It can be understood that, when the air outlet structure is applied to an air processing device, the air supply cavity 220 functions to connect the air inlet 201 and an air duct component in the air processing device, so that the high-static-pressure airflow after speed reduction and pressure expansion through the pressure expansion cavity 200 can flow into the air duct component in the air processing device through the air supply cavity 220. The cavity bottom wall of the air supply cavity 220 is formed by extending the lower edge surface of the air passing opening 201 along the horizontal direction, so that high static pressure airflow from the diffuser cavity 200 can flow along the cavity bottom wall of the air supply cavity 220 along the horizontal direction, the vibration of the airflow in the flowing direction is reduced, and the wind power loss is reduced.

Optionally, when the total heat exchanger 500 is disposed in the air processing apparatus, the air supply cavity 220 is an airflow passage for communicating the pressure expansion cavity 200 with the total heat exchanger 500, and a cavity bottom wall of the air supply cavity 220 is flush with a lower edge of an air inlet surface of the total heat exchanger 500, so as to guide airflow.

In order to make the airflow entering the heat exchanger more uniform, in an embodiment of the present invention, referring to fig. 1 to 3, the blowing cavity 220 includes a flow guiding section 221 communicating with the air inlet 201 and a uniform section 222 for connecting with the heat exchanger, and the uniform section 222 connects a side of the flow guiding section 221 away from the air inlet 201; the inner diameter of the cross section of the flow guide section 221 is gradually reduced from the air passing opening 201 to the uniform section 222.

One side of the flow guide section 221 is communicated with the air passing opening 201, the other side of the flow guide section 221 is communicated with the uniform section 222, and the uniform section 222 is connected with the heat exchanger, so that high-static-pressure air flow flowing out of the air passing opening 201 can enter the uniform section 222 through the flow guide effect of the flow guide section 221 and then flows into the heat exchanger through the uniform section 222. The inner diameter of the cross section of the flow guiding section 221 is gradually reduced from the air inlet 201 to the uniform section 222, so as to realize the function of guiding the air flow blown out from the air inlet 201 to the uniform section 222. Optionally, the flow guiding section 221 has a flow guiding surface 221a, and the flow guiding surface 221a is disposed obliquely with respect to the air inlet 201 to guide the outlet airflow. In an actual application process, the flow guide surface 221a may be disposed on a single side or both the opposite sides of the flow guide surface 221a, and a specific arrangement form of the flow guide surface may be determined according to an air outlet condition of the first fan 120.

In an embodiment of the present invention, a fixing portion 223 for installing an air detection device is disposed in the air blowing cavity 220, and the air detection device includes an air pressure sensor and/or a temperature sensor and/or a humidity sensor, so as to achieve a function of detecting air pressure and/or temperature and/or humidity of the airflow entering the air blowing cavity 220. Optionally, the fixing portion 223 may be disposed on a bottom wall of the blowing cavity 220, and the bottom wall of the blowing cavity extends horizontally, so that the airflow flowing through the fixing portion 223 is more stable, and the accuracy of the detection result is improved.

In an embodiment of the present invention, referring to fig. 1 to 6, the first fan 120 is a centrifugal fan, and a fan shaft of the first fan 120 is disposed horizontally or vertically.

In this embodiment, the fan shaft of the first fan 120 is horizontally or vertically arranged, the air outlet is approximately circular, the air supply speed far away from the fan shaft is high, the air supply speed near the fan shaft is low, and therefore the air speed at the air outlet is uneven, and the air speed uniformity is improved while the air speed is reduced by arranging the pressure expansion cavity 200 and the air treatment function module 300 at the air inlet 201. On the basis, the flow guide surface 221a of the flow guide section 221 can be correspondingly arranged on the side of the air outlet with higher air supply speed, so that the flow path with higher air speed is prolonged, and the uniformity of the air speed of the airflow is further improved.

The present invention further provides an air processing apparatus, referring to fig. 1 to 8, the air processing apparatus includes a housing 400, a fresh air module, an exhaust air module, and a total heat exchanger 500, the fresh air module includes an air outlet structure, and the specific structure of the air outlet structure refers to the above embodiments. The shell 400 is provided with a fresh air inlet 401, a circulating air inlet 402, an indoor air outlet 403, an indoor air outlet 404 and an outdoor air outlet 405;

the fresh air module comprises a fresh air duct 110 and an air outlet structure which are arranged in the shell 400, and the air outlet structure is arranged in the fresh air duct 110; the fresh air duct 110 is communicated with a fresh air inlet 401 and an indoor air outlet 403, and the fan chamber 130 of the air outlet structure is communicated with the fresh air inlet 401.

The exhaust module comprises an exhaust air duct 610 and an exhaust fan 620 arranged in the exhaust air duct 610; the exhaust air duct 610 is communicated with the indoor exhaust port 404 and the outdoor exhaust port 405, the exhaust fan 620 can drive indoor air to be exhausted to the outdoor from the outdoor exhaust port 405 through the indoor exhaust port 404 and the exhaust air duct 610, and the air outlet side of the exhaust fan 620 is communicated with the outdoor exhaust port 405;

the fresh air duct 110 and the exhaust air duct 610 cross and penetrate through the total heat exchanger 500, and the air supply cavity 220 of the air outlet structure is arranged above the air inlet side of the exhaust fan 620.

In this embodiment, the fresh air module drives outdoor fresh air to enter the air outlet structure through the fresh air inlet 401 by the first fan 120, enters the air supply cavity 220 after being subjected to speed reduction and pressure expansion by the pressure expansion cavity 200, and then flows through the total heat exchanger 500 from the air supply cavity 220 to be blown into the room from the indoor air outlet 403, so as to achieve the function of supplementing fresh air into the room. When indoor new trend mends sufficient or excessive, perhaps when indoor air quality is relatively poor, the accessible module of airing exhaust is discharged indoor air to outdoor to the realization is to the function of taking a breath of indoor air. Meanwhile, the fresh air duct 110 and the exhaust air duct 610 are arranged in the total heat exchanger 500 in a crossed manner, so that fresh air introduced from the outdoor can exchange heat with air exhausted from the indoor in the total heat exchanger 500, heat of the exhausted indoor air is recycled, the temperature difference between the introduced fresh air and the indoor temperature is reduced, and an energy-saving effect is achieved.

It can be understood that the air inlet surface of the total heat exchanger 500 is disposed above the air outlet surface, and the air supply cavity 220 of the air outlet structure is disposed above the air inlet side of the exhaust fan 620, and the fan chamber 130 of the first fan 120 is disposed at the side of the air supply cavity 220, so as to achieve the purpose of reducing the height of the overall structure. Optionally, the exhaust fan 620 and the first fan 120 may be disposed to be in the same plane as the bottom surface of the total heat exchanger 500, and the air supply cavity 220 communicated with the first fan 130 and the air inlet side of the exhaust fan 620 are disposed up and down to correspond to the air inlet surface and the air outlet surface of the total heat exchanger 500, so as to reduce the overall size and improve the compactness of the structural layout while smoothly supplying fresh air and discharging sewage.

In an embodiment of the present invention, referring to fig. 7 and 8, the air treatment device further comprises a circulating air module and a bypass valve 800; the circulating air module is provided with a circulating air duct 710 and a circulating fan 720 arranged in the circulating air duct 710, and the circulating air duct 710 is provided with a circulating air inlet 402 communicated with the indoor space; the bypass valve 800 is used for communicating or blocking the circulating air duct 710 and the fresh air duct 110;

when the bypass valve 800 is opened, the first fan 120 may drive the indoor air to sequentially enter the fresh air duct 110 through the circulating air inlet 402 and the bypass valve 800, so as to melt ice in the total heat exchanger 500.

It can be understood that the circulating air duct 710 communicates with the circulating air inlet 402 and the indoor air outlet 403, and the circulation of the indoor air treatment is realized by the driving action of the circulating fan 720, such as cooling, heating, humidifying, purifying, or dehumidifying the indoor air. The circulating air duct 710 and the fresh air duct 110 are communicated or blocked by the bypass valve 800, and if the bypass valve 800 is closed, fresh air can be introduced by opening the first fan 120; when the bypass valve 800 is opened, the introduction of fresh air may be accomplished by turning on the first fan 120 and/or the recycle fan 720. When in the winter heating mode, the first fan 120 drives outdoor cold air to enter the indoor environment through the total heat exchanger 500, and due to the low outdoor temperature, the air inlet surface of the total heat exchanger 500 for introducing fresh air may be frosted or frozen, so that a large wind resistance is caused and the heat exchange effect is affected, at this time, the bypass valve 800 may be opened, so that the first fan 120 is communicated with the circulating air inlet 402, and the first fan 120 drives indoor warm air to blow to the air inlet surface of the total heat exchanger 500 through the circulating air inlet 402, the bypass valve 800, the fan chamber 130, the diffusion chamber 210 and the air supply chamber 220, so as to achieve the defrosting or deicing function.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides an air-out structure, is applied to air treatment device, its characterized in that, air-out structure includes:

a first fan;

the pressure expansion cavity is communicated with the air outlet of the first fan, and the radial size of the section of the pressure expansion cavity is larger than the inner diameter size of the air outlet in the air outlet direction of the airflow; the pressure expansion cavity is provided with a sinking groove sinking relative to the air outlet.

2. The air outlet structure of claim 1, wherein a radial dimension of the air outlet is defined as H0, and a depth dimension of the sinking groove relative to the air outlet is defined as H1, so as to satisfy: h1 is more than or equal to 0.5H0 and less than or equal to 1.5H 0; the width of the sink groove in the air outlet direction is defined as W1, and the following conditions are met: w1 is more than or equal to 0.1H0 and less than or equal to 0.5H 0.

3. The air outlet structure of claim 1, wherein the inner diameter of the cross section of the sink groove gradually increases from the side connected with the air outlet toward the direction away from the air outlet.

4. The air outlet structure of claim 1, wherein the diffuser cavity is provided with an air outlet, the air outlet is located at the upper edge of the side wall of the sink groove far away from the air outlet, and the lower edge of the air outlet is higher than the middle part or the position above the middle part of the air outlet;

5. The air outlet structure of claim 4, further comprising a blowing cavity communicated with the air inlet, wherein the cavity bottom wall of the blowing cavity is formed by extending the lower edge surface of the air inlet along the horizontal direction.

6. The air outlet structure of claim 5, wherein the air supply cavity comprises a flow guide section communicated with the air inlet and a uniform section used for being connected with a heat exchanger, and the uniform section is connected with one side of the flow guide section away from the air inlet; the inner diameter of the cross section of the flow guide section is gradually reduced from the air passing opening to the uniform section.

7. The air outlet structure of claim 5, wherein a fixing part for installing an air detection device is arranged in the air supply cavity, and the air detection device comprises an air pressure sensor and/or a temperature sensor and/or a humidity sensor.

8. The air outlet structure of any one of claims 1 to 7, wherein the first fan is a centrifugal fan, and a fan shaft of the first fan is arranged horizontally or vertically;

9. An air treatment device, comprising:

a housing;

the fresh air module comprises a fresh air duct arranged in the shell and an air outlet structure according to any one of claims 1 to 8, and the air outlet structure is arranged in the fresh air duct;

10. The air treatment device of claim 9, further comprising: