Air outlet structure and air treatment device

Abstract

The present invention discloses an air outlet structure and an air treatment device. Among them, the air outlet structure includes a first fan and a diffuser chamber; the diffuser chamber is communicated with the air outlet of the first fan, and in the air outlet direction of the air flow, the radial dimension of the cross section of the diffuser chamber is larger than the inner diameter dimension of the air outlet; the diffuser chamber has a sunken groove that sinks relative to the air outlet. The technical solution of the present invention for the air outlet structure increases the static pressure of the air flow, reduces the flow resistance of the air flow in the subsequent air duct components, reduces the wind power loss, and due to the reduction of the wind speed, reduces the impact of the air flow on the air duct components, achieving the effect of reducing noise. At the same time, in this embodiment, the diffuser chamber includes a sunken groove that sinks relative to the air outlet, making full use of the height difference between the air outlet and the bottom wall of the first fan, while reducing the speed and increasing the pressure of the air outlet air flow, making the structural layout more compact.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and particularly to an air outlet structure and an air handling device. Background Art

[0002] With the improvement of people's living standards, people's demand for comfort and energy conservation is increasing. As a building that adapts to climate characteristics and natural conditions and has heat insulation performance and high airtightness, passive houses are becoming more and more popular among people.

[0003] In related technologies, in order to ensure the air quality inside the passive house and the air pressure balance between indoor and outdoor, an air handling device that can ventilate the passive house is usually set up. However, the air duct structure of the existing air handling device is prone to generate a large flow resistance to the air flow, resulting in the technical problem of wind power loss.

[0004] Summary of the Invention

[0005] The main object of the present invention is to propose an air duct structure, aiming to reduce the air flow resistance in the air handling device, reduce wind power loss, and improve the utilization rate of wind energy.

[0006] To achieve the above object, the air outlet structure proposed by the present invention includes a first fan and a diffuser chamber; the diffuser chamber is communicated with the air outlet of the first fan, and in the air outlet direction of the air flow, the radial dimension of the cross section of the diffuser chamber is larger than the inner diameter dimension of the air outlet; the diffuser chamber has a sunk groove that sinks relative to the air outlet.

[0007] In an embodiment of the present invention, the radial dimension of the air outlet is defined as H0, and the depth dimension of the sunk groove sinking relative to the air outlet is defined as H1, satisfying: 0.5H0 ≤ H1 ≤ 1.5H0; the width of the sunk groove in the air outlet direction is defined as W1, satisfying: 0.1H0 ≤ W1 ≤ 0.5H0.

[0008] In an embodiment of the present invention, the inner diameter of the cross section of the sunk groove gradually increases from the side connected to the air outlet towards the direction away from the air outlet.

[0009] In an embodiment of the present invention, the diffuser chamber is provided with an air passing opening, the air passing opening is located at the upper edge of the side wall of the sunk groove away from the air outlet, and the lower edge surface of the air passing opening is higher than the middle or above the middle position of the air outlet;

[0010] An installation position for installing an air handling module is provided at the air passing opening, and the air handling module extends upward relative to the sunk groove.

[0011] In an embodiment of the present invention, the air outlet structure further includes a air supply cavity communicated with the air passing opening, and the bottom wall of the air supply cavity is formed by horizontally extending the lower edge surface of the air passing opening.

[0012] In an embodiment of the present invention, the air supply cavity includes a diversion section communicated with the air passing opening and a uniform section for connecting with the heat exchanger, and the uniform section is connected to the side of the diversion section away from the air passing opening; the inner diameter of the cross section of the diversion section gradually decreases from the air passing opening to the uniform section.

[0013] In an embodiment of the present invention, a fixing part for installing an air detection device is provided in the air supply cavity, and the air detection device includes a barometric pressure sensor and / or a temperature sensor and / or a humidity sensor.

[0014] In an embodiment of the present invention, the first blower is a centrifugal blower, and the blower shaft of the first blower is arranged horizontally or vertically;

[0015] And / or, the air outlet structure further includes a blower chamber for installing the first blower, the blower chamber is separated from the diffuser chamber by a partition board, and the air outlet side of the first blower penetrates through the partition board and extends into the diffuser chamber.

[0016] To achieve the above object, the present invention further provides an air treatment device, including

[0017] A housing;

[0018] A fresh air module, the fresh air module includes a fresh air duct provided in the housing and the above-mentioned air outlet structure, and the air outlet structure is provided in the fresh air duct;

[0019] An exhaust air module, the exhaust air module includes an exhaust air duct and an exhaust air blower provided in the exhaust air duct; and

[0020] A total heat exchanger, the fresh air duct and the exhaust air duct cross through the total heat exchanger, and the air supply cavity of the air outlet structure is arranged above the air inlet side of the exhaust air blower.

[0021] In an embodiment of the present invention, the air treatment device further includes:

[0022] An indoor circulating air module, the indoor circulating air module has a circulating air duct, and the circulating air duct is provided with a circulating air inlet communicated with the indoor; and

[0023] A bypass valve for connecting or blocking the circulating air duct and the fresh air duct;

[0024] When the bypass valve is opened, the first blower can drive indoor air to sequentially pass through the circulating air inlet and the bypass valve and enter the fresh air duct to defrost the total heat exchanger.

[0025] The air outlet structure of the technical solution of the present invention is provided with a diffuser cavity at the air outlet of the first fan. In the direction of the air outlet airflow, the radial dimension of the cross-section of the diffuser cavity is larger than the inner diameter dimension of the air outlet. When the airflow flows from a smaller diameter to a larger diameter, the wind speed decreases, and part of the kinetic energy of the airflow is converted into potential energy, increasing the static pressure of the airflow, reducing the flow resistance of the airflow in the subsequent duct components, reducing the wind power loss. Due to the decrease in wind speed, the impact of the airflow on the duct components is reduced, achieving the effect of reducing noise. At the same time, in this embodiment, the diffuser cavity includes a sunken groove that sinks relative to the air outlet, making full use of the height difference between the air outlet and the bottom wall of the first fan, while reducing the speed and increasing the pressure of the air outlet airflow, making the structural layout more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following-described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0027] Figure 1 It is a schematic structural diagram of an embodiment in which the air outlet structure of the present invention is applied to an air treatment device;

[0028] Figure 2 is Figure 1 a partial enlarged view at M in;

[0029] Figure 3 It is a top view of an embodiment of the air treatment device of the present invention;

[0030] Figure 4 is Figure 3 a cross-sectional view taken along line A-A in;

[0031] Figure 5 is Figure 3 a cross-sectional view taken along line B-B in;

[0032] Figure 6 is Figure 3 a cross-sectional view taken along line C-C in;

[0033] Figure 7 It is a schematic structural diagram of the fresh air introduction structure of an embodiment of the air treatment device of the present invention;

[0034] Figure 8 It is a schematic structural diagram of the air treatment device of the present invention during defrosting or deicing.

[0035] Explanation of the reference numerals in the drawings:

[0036]

[0037]

[0038] The realization, functional features, and advantages of the present invention will be further described in conjunction with embodiments with reference to the accompanying drawings. Detailed implementation manners

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0041] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0042] The present invention provides an air outlet structure, which is applied to an air treatment device, aiming to reduce the air flow resistance inside the air treatment device, reduce wind power loss, lower the wind speed, increase the air flow static pressure, and reduce noise. It can be understood that the air outlet structure can be a component in the fresh air module of the air treatment device, or a structure in the indoor circulation module or the exhaust module, etc. As long as it is a duct component with air flow, the air outlet structure can be set therein. Hereinafter, an example will be given with the air outlet structure being set in the fresh air module of the air treatment device.

[0043] In the embodiments of the present invention, as Figures 1 to 3 and Figure 6As shown in the figure, the air outlet structure includes a first fan 120 and a diffuser chamber 200; the diffuser chamber 200 is communicated with the air outlet of the first fan 120, and in the air outlet direction of the air flow, the radial dimension of the cross section of the diffuser chamber 200 is larger than the inner diameter dimension of the air outlet; the diffuser chamber 200 has a sunken groove 210 relative to the air outlet.

[0044] The first fan 120 is used to drive the air flow on the air inlet side of the first fan 120 to blow out from the air outlet. A diffuser chamber 200 is arranged at the air outlet. The radial dimension of the cross section of the diffuser chamber 200 is larger than the inner diameter dimension of the air outlet, so that the air flow flows from a smaller cross-sectional diameter to a larger cross-sectional diameter. Since the cross-sectional area of the gas flow increases, the speed of the air flow will decrease, and part of the kinetic energy of the air flow is converted into potential energy, thereby increasing the static pressure of the air flow, achieving the effect of diffusing and pressurizing the air flow blown out by the first fan 120, reducing the flow resistance of the air flow in the subsequent air duct components, reducing the wind power loss, and at the same time, due to the reduction of the wind speed, reducing the impact of the air flow on the air duct components, achieving the effect of reducing noise.

[0045] When the air outlet structure is applied to an air treatment device, the first fan 120 is installed in the fan chamber 130. The diffuser chamber 200 has a sunken groove 210 relative to the air outlet, so that after the air flow blows out from the air outlet, it will directly enter the diffuser chamber 200 with the sunken groove 210 to reduce the speed and increase the pressure, and then flow from the air passing port 201 of the diffuser chamber 200 to the subsequent air flow channel. It can be understood that the increased air flow space of the diffuser chamber 200 relative to the air outlet, in addition to the space of the sunken groove 210, may also include the space above or on the side of the air outlet, or the space below the sunken groove 210, etc. The shape structure of the diffuser chamber 200 can be determined according to the actual situation. For example, it can be a regular shape such as a cube, a cuboid, a cylinder, a prism, etc., or an irregular special shape, etc. There is no limit here as long as it can be ensured that in the air outlet direction of the air flow, the radial dimension of the cross section of the diffuser chamber 200 is larger than the diameter dimension of the air outlet. In the actual application process, a heat exchanger is arranged in the air duct structure of the air treatment device. Due to the existence of narrow-slit fluid air ducts in the heat exchanger, the flow resistance is large, affecting the flow of gas. Therefore, a diffuser chamber 200 is arranged at the air outlet to reduce the speed and increase the pressure, reduce the resistance of the air flow, so as to smoothly pass through the heat exchanger.

[0046] It can be understood that there is usually a distance between the air outlet and the bottom wall of the first fan 120. By setting the sunken groove 210 relative to the air outlet, the height difference between the air outlet and the bottom wall of the first fan 120 is fully utilized, making the structural layout more compact while being able to play a role in reducing the speed and increasing the pressure of the air flow blown out.

[0047] Taking an air handling unit equipped with a fresh air module and an exhaust air module as an example, the air outlet structure is arranged in the fresh air module. The fresh air duct 110 and the exhaust air duct 610 are heat exchange connected through a total heat exchanger 500, so that the introduced fresh air can exchange heat with the exhausted air, improving the thermal energy utilization rate. On this basis, since the fresh air duct 110 and the exhaust air duct 610 cross through the total heat exchanger 500, and the air inlet surface of the total heat exchanger 500 is located above and the air outlet surface is located below, when the first fan 120 is installed in the fan chamber 130, there is a height difference between the air outlet of the first fan 120 and the air inlet surface of the total heat exchanger 500. At this time, the air flow direction from the first fan 120 to the total heat exchanger 500 is a broken line flow direction. At the same time, due to the small distance between the heat exchange surfaces inside the total heat exchanger 500, the gas flow resistance inside it is large. Based on this, in this embodiment, a diffuser chamber 200 is arranged at the air outlet of the first fan 120, so that the air flow blown out from the air outlet can decelerate and increase pressure in the diffuser chamber 200. The diffuser chamber 200 includes a sunken groove 210 that sinks relative to the air outlet, so as to make full use of the height difference between the air outlet and the bottom wall of the first fan 120, increase the cross-sectional size of the diffuser chamber 200, and further achieve the effects of reducing the wind speed, increasing the static pressure and reducing the noise.

[0048] Optionally, a partition 240 is arranged between the fan chamber 130 where the first fan 120 is located and the diffuser chamber 200. The partition 240 separates the air inlet side and the air outlet side of the first fan 120 to prevent gas from flowing back and short-circuiting. On this basis, the air outlet side of the first fan 120 passes through the partition 240 and is communicated with the diffuser chamber 200. Then the partition 240 can form the groove side wall on the side of the sunken groove 210 close to the air outlet, so as to simplify the structure.

[0049] For the air outlet structure of the technical solution of the present invention, by arranging a diffuser chamber 200 at the air outlet of the first fan 120, in the direction of the air outlet air flow, the radial dimension of the cross section of the diffuser chamber 200 is larger than the inner diameter dimension of the air outlet. When the air flow flows from a smaller diameter to a larger diameter, the wind speed decreases, and part of the kinetic energy of the air flow is converted into potential energy, increasing the static pressure of the air flow, reducing the flow resistance of the air flow in the subsequent duct components, reducing the wind power loss. Due to the decrease in the wind speed, the impact of the air flow on the duct components is reduced, achieving the effect of reducing the noise. At the same time, in this embodiment, the diffuser chamber 200 includes a sunken groove 210 that sinks relative to the air outlet, making full use of the height difference between the air outlet and the bottom wall of the first fan 120. While decelerating and increasing the pressure of the air outlet air flow, the structural layout is made more compact.

[0050] In order to ensure the effect of reducing the speed and expanding the pressure of the air outlet airflow, in an embodiment of the present invention, the height radial dimension of the air outlet is defined as H0, and the depth dimension of the sunken groove 210 relative to the air outlet is defined as H1, satisfying: 0.5H0 ≤ H1 ≤ 1.5H0. The width of the sunken groove 210 in the air outlet direction is defined as W1, satisfying: 0.1H0 ≤ W1 ≤ 0.5H0.

[0051] It can be understood that the size of the sunken groove 210 can be determined according to the actual situation. For example, the sinking depth of the sunken groove 210 can be equal to the distance between the air outlet and the bottom wall of the first fan 120, or can be less than or greater than the distance between the air outlet and the bottom wall of the first fan 120. The width dimension of the sunken groove 210 can also be determined according to the actual situation, as long as it is ensured that the sunken groove 210 can produce the effect of reducing the speed and expanding the pressure of the air outlet airflow. In this embodiment, in order to ensure the effect of reducing the speed and expanding the pressure, the depth and width dimensions of the sunken groove 210 are determined according to the actual diameter size of the air outlet of the first fan 120. The sinking depth of the sunken groove 210 relative to the air outlet and the diameter size of the air outlet satisfy: 0.5H0 ≤ H1 ≤ 1.5H0. Optionally, the sinking depth H1 of the sunken groove 210 can be 0.5H0, 0.6H0, 0.7H0, 0.8H0, 0.9H0, H0, 1.1H0, 1.2H0, 1.3H0, 1.4H0 or 1.5H0. The width of the sunken groove 210 in the air outlet direction and the diameter size of the air outlet satisfy: 0.1H0 ≤ W1 ≤ 0.5H0. Optionally, the width W1 of the sunken groove 210 can be 0.1H0, 0.2H0, 0.3H0, 0.4H0 or 0.5H0.

[0052] It should be noted that in the actual application process, the sinking depth dimension of the sunken groove 210 and the width dimension of the sunken groove 210 in the air outlet direction can both be determined according to the actual situation. In this embodiment, the sinking depth dimension of the sunken groove 210 is greater than the width dimension in the air outlet direction, expanding the cross-sectional size while shortening the flow path to achieve a better effect of reducing the speed and expanding the pressure.

[0053] In order to further achieve the effect of reducing the speed and expanding the pressure, in an embodiment of the present invention, referring to Figures 1 to 3 , from one side connecting the air outlet towards the direction away from the air outlet, the inner diameter of the cross-section of the sunken groove 210 gradually increases.

[0054] In the actual application process, the shape structure of the sunken groove 210 can be determined according to the actual situation, such as a regular cube, cuboid, cylinder, etc., or an irregular special-shaped body. In this embodiment, in order to further expand the air outlet area, from one side connecting the air outlet towards the direction away from the air outlet, the inner diameter of the cross-section of the sunken groove 210 gradually increases, so that the air outlet area gradually increases, reducing the wind speed while increasing the static pressure, reducing the airflow impact and reducing the noise.

[0055] It is understandable that the inner diameter of the cross-section of the sunken groove 210 gradually increases, which can be achieved in various ways. For example, one side wall of the sunken groove 210 can extend outward relative to the air outlet, or both opposite side walls of the sunken groove 210 can extend outward. When both opposite side walls of the sunken groove 210 extend outward, the inclination angles of the two side walls can be the same or different. In this embodiment, in order to improve the uniformity of the air outlet airflow, the two side walls of the sunken groove 210 can be set to different inclination angles to adapt to different air outlet intensities at the air outlet of the first fan 120.

[0056] In an embodiment of the present invention, referring to Figure 1 、 Figure 2 and Figure 6 , the diffuser chamber 200 is provided with an air passing opening 201, and the air passing opening 201 is located at the upper edge of the side wall of the sunken groove 210 away from the air outlet, and the lower edge surface of the air passing opening 201 is higher than the middle or above the middle position of the air outlet.

[0057] The diffuser chamber 200 is provided with the air passing opening 201, and the air passing opening 201 is connected to the 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 passing opening 201 after decelerating and diffusing pressure through the diffuser chamber 200. The air passing opening 201 is located at the upper edge of the side wall of the sunken groove 210 away from the air outlet, then it can be understood that the sunken groove 210 is located in the sunken space between the air outlet and the air passing opening 201, thereby realizing the function of increasing the cross-section of the airflow after it is blown out from the air outlet and ensuring the deceleration and pressure diffusion of the air outlet airflow. Optionally, in order to ensure the effective space of the sunken groove 210, the lower edge surface of the air passing opening 201 is higher than the middle or above the middle position of the air outlet, so that the sunken groove 210 can have sufficient space for decelerating and diffusing pressure.

[0058] In order to further achieve the effect of decelerating and increasing pressure, referring to Figure 1 、 Figure 2 and Figure 6 , an installation position 230 for installing the air treatment function module 300 is provided at the air passing opening 201, and the air treatment function module 300 extends upward relative to the sunken groove 210.

[0059] It is understandable that, on the basis of the foregoing embodiment, the air passing opening 201 is arranged on the side opposite to the air outlet, and the air treatment function module 300 is installed at the air passing opening 201, so that the air treatment function module 300 can be arranged opposite to the wind direction to form an upward extension relative to the sunken groove 210, thereby further expanding the air outlet area, making the decelerating and pressure increasing effect on the air outlet airflow better, and at the same time being able to reduce noise.

[0060] In the actual application process, the installation position 230 of the air treatment function module 300 can be a groove structure, a buckle structure, a hook structure or a support plate structure. In this embodiment, considering that the air treatment function module 300 needs to perform corresponding functional processing on the air flow passing through it, in order to enable the air flow to pass through smoothly, the installation position 230 of the air treatment function module 300 is selected as a sheet-like structure extending from opposite sides, and a working gap for installing the air treatment function module 300 is formed between the two sheet-like structures. Optionally, the air treatment function module 300 can be connected to the sheet-like structure through fasteners such as screws or bolts.

[0061] In an embodiment of the present invention, the air treatment function module 300 is a purification module. The purification module has a fiber layer with slender pores, so that the air flow after passing through the purification module can be more uniform. At the same time, the fiber layer can also play a sound absorption effect to reduce noise.

[0062] 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, etc. It can be understood that in the actual application process, by setting the heat exchange module to perform heat exchange treatment on the air flow of the air supply, it is possible to avoid the situation that the temperature of the fresh air flow introduced by the first fan 120 is too low when the external environmental temperature is relatively low, resulting in frosting on the exhaust side of the total heat exchanger 500, so as to further ensure the air treatment effect of the total heat exchanger 500. Since the electric heating material has a large heat exchange area, the air flow after passing through the purification module can be more uniform. At the same time, the fiber layer can also play a sound absorption effect to reduce noise.

[0063] In an embodiment of the present invention, referring to Figures 1 to 6 , the air outlet structure further includes an air supply chamber 220 communicated with the air passing opening 201, and the bottom wall of the air supply chamber 220 is formed by horizontally extending the lower edge surface of the air passing opening 201.

[0064] It can be understood that when the air outlet structure is applied to the air treatment device, the air supply chamber 220 plays a role of connecting the air passing opening 201 and the air duct components in the air treatment device, so that the high-static-pressure air flow decelerated and pressurized by the diffuser chamber 200 can flow through the air supply chamber 220 to the air duct components in the air treatment device. The bottom wall of the air supply chamber 220 is formed by horizontally extending the lower edge surface of the air passing opening 201, so that the high-static-pressure air flow coming out of the diffuser chamber 200 can flow along the horizontal bottom wall of the air supply chamber 220, reducing the jitter of the air flow in the flowing direction and reducing the wind power loss.

[0065] Optionally, when a total heat exchanger 500 is provided in the air handling device, the air supply chamber 220 is an air flow passage connecting the diffuser chamber 200 and the total heat exchanger 500. The bottom wall of the air supply chamber 220 is flush with the lower edge of the air inlet surface of the total heat exchanger 500 to guide the air flow.

[0066] In order to make the air flow entering the heat exchanger more uniform, in an embodiment of the present invention, referring to Figures 1 to 3 , the air supply chamber 220 includes a diversion section 221 communicating with the air inlet 201 and a uniform section 222 for connecting to the heat exchanger. The uniform section 222 is connected to the side of the diversion section 221 away from the air inlet 201; the inner diameter of the cross-section of the diversion section 221 gradually decreases from the air inlet 201 to the uniform section 222.

[0067] One side of the diversion section 221 communicates with the air inlet 201, and the other side communicates with the uniform section 222. The uniform section 222 is connected to the heat exchanger, so that the high-static-pressure air flow flowing out of the air inlet 201 can enter the uniform section 222 through the diversion of the diversion section 221 and then flow into the heat exchanger through the uniform section 222. The inner diameter of the cross-section of the diversion section 221 gradually decreases from the air inlet 201 to the uniform section 222 to realize the function of diverting the air flow blown out from the air inlet 201 to the uniform section 222. Optionally, the diversion section 221 has a diversion surface 221a, and the diversion surface 221a is inclined relative to the air inlet 201 to guide the outgoing air flow. In actual application, the diversion surface 221a can be provided on one side or on both opposite sides, and its specific setting form can be determined according to the air outlet condition of the first blower 120.

[0068] In an embodiment of the present invention, a fixing part 223 for installing an air detection device is provided in the air supply chamber 220. The air detection device includes a barometric pressure sensor and / or a temperature sensor and / or a humidity sensor to realize the detection function of the barometric pressure and / or temperature and / or humidity of the air flow entering the air supply chamber 220. Optionally, the fixing part 223 can be arranged on the bottom wall of the air supply chamber 220, and the bottom wall extends horizontally, so that the air flow flowing through the fixing part 223 is more stable and the accuracy of the detection result is improved.

[0069] In an embodiment of the present invention, referring to Figures 1 to 6 , the first blower 120 is a centrifugal blower, and the blower shaft of the first blower 120 is arranged horizontally or vertically.

[0070] 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 is higher at a position far from the fan shaft and lower at a position close to the fan shaft, resulting in uneven air speed at the air outlet. By providing a diffuser chamber 200 and an air treatment function module 300 provided at the air passage 201, while reducing the air speed, the air speed uniformity is improved. On this basis, the guide surface 221a of the guide section 221 can be correspondingly arranged on the side with a higher air supply speed at the air outlet, extending the flow path of the higher air speed and further improving the air speed uniformity of the air flow.

[0071] The present invention also provides an air treatment device. Referring to Figures 1 to 8 , the air treatment device 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 embodiment. Since this air treatment device adopts all the technical solutions of the above all embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated one by one here. Among them, the housing 400 is provided with a fresh air inlet 401, a circulating air inlet 402, an indoor air outlet 403, an indoor exhaust air outlet 404, and an outdoor exhaust air outlet 405;

[0072] The fresh air module includes a fresh air duct 110 provided in the housing 400 and an air outlet structure, and the air outlet structure is provided in the fresh air duct 110; the fresh air duct 110 communicates with the fresh air inlet 401 and the indoor air outlet 403, and the fan chamber 130 of the air outlet structure communicates with the fresh air inlet 401.

[0073] The exhaust air module includes an exhaust air duct 610 and an exhaust air fan 620 provided in the exhaust air duct 610; the exhaust air duct 610 communicates with the indoor exhaust air outlet 404 and the outdoor exhaust air outlet 405, and the exhaust air fan 620 can drive indoor air to be discharged to the outside through the indoor exhaust air outlet 404 and the exhaust air duct 610 from the outdoor exhaust air outlet 405, and the air outlet side of the exhaust air fan 620 communicates with the outdoor exhaust air outlet 405;

[0074] The fresh air duct 110 and the exhaust air duct 610 cross and pass through the total heat exchanger 500, and the air supply chamber 220 of the air outlet structure is arranged above the air inlet side of the exhaust air fan 620.

[0075] 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. After decelerating and diffusing in the diffuser chamber 200, the fresh air enters the air supply chamber 220, and then flows through the total heat exchanger 500 from the air supply chamber 220 and is blown into the room through the indoor air outlet 403 to achieve the function of supplementing fresh air into the room. When the fresh air in the room is supplemented sufficiently or excessively, or when the indoor air quality is poor, the indoor air can be discharged outdoors through the exhaust module to realize the function of replacing the indoor air. At the same time, by crossing the fresh air duct 110 and the exhaust air duct 610 in the total heat exchanger 500, the fresh air introduced from the outside can exchange heat with the air discharged from the room in the total heat exchanger 500, so as to realize the recovery and utilization of the heat of the discharged indoor air, reduce the temperature difference between the introduced fresh air and the indoor temperature, and achieve the energy-saving effect.

[0076] It can be understood that the air inlet surface of the total heat exchanger 500 is arranged above the air outlet surface, then the air supply chamber 220 of the air outlet structure is arranged above the air inlet side of the exhaust fan 620. By arranging the fan chamber 130 of the first fan 120 on the side of the air supply chamber 220, the purpose of reducing the overall structure height is achieved. Optionally, both the exhaust fan 620 and the first fan 120 can be arranged on the same plane as the bottom surface of the total heat exchanger 500. By arranging the air supply chamber 220 communicated with the first fan 130 and the air inlet side of the exhaust fan 620 up and down to correspond to the air inlet surface and the air outlet surface of the total heat exchanger 500, while realizing the smooth intake of fresh air and discharge of dirty air, the overall structure size is reduced and the compactness of the structure layout is improved.

[0077] In an embodiment of the present invention, referring to Figure 7 and Figure 8 , the air treatment device further includes a circulating air module and a bypass valve 800; the circulating air module has 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 room; the bypass valve 800 is used to connect or block the circulating air duct 710 and the fresh air duct 110;

[0078] When the bypass valve 800 is opened, the first fan 120 can drive indoor air to enter the fresh air duct 110 through the circulating air inlet 402 and the bypass valve 800 in sequence to defrost the total heat exchanger 500.

[0079] It can be understood that the circulating air duct 710 connects the circulating air inlet 402 and the indoor air outlet 403, and realizes the circulation of indoor air treatment through the driving action of the circulating fan 720. For example, it can be refrigeration, heating, humidification, purification or dehumidification of indoor air, etc. The circulating air duct 710 is connected or blocked with the fresh air duct 110 through the bypass valve 800. For example, when the bypass valve 800 is closed, the fresh air can be introduced by turning on the first fan 120; when the bypass valve 800 is opened, the fresh air can be introduced by turning on the first fan 120 and / or the circulating fan 720. When in the winter heating mode, the first fan 120 drives the outdoor cold air to enter the indoor environment through the total heat exchanger 500. Since the outdoor temperature is relatively low, frost or ice may form on the air inlet surface of the total heat exchanger 500 for introducing fresh air, resulting in a large wind resistance and affecting the heat exchange effect. At this time, the bypass valve 800 can be opened to connect the first fan 120 with the circulating air inlet 402, and the indoor warm air is driven by the first fan 120 to blow towards 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 diffuser chamber 210 and the air supply chamber 220, so as to realize the defrosting or deicing function.

[0080] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. An air outlet structure is applied to an air treatment device, characterized in that, The air outlet structure includes: A first fan; A diffuser chamber, which is communicated with the air outlet of the first fan. In the air outlet direction of the air flow, the radial dimension of the cross section of the diffuser chamber is larger than the inner diameter dimension of the air outlet. The diffuser chamber has a sunken groove that sinks relative to the air outlet. Define the radial dimension of the air outlet as H0, and the depth dimension of the sunken groove sinking relative to the air outlet as H1, satisfying: 0.5H0 ≤ H1 ≤ 1.5H0. Define the width of the sunken groove in the air outlet direction as W1, satisfying: 0.1H0 ≤ W1 ≤ 0.5H0. The diffuser chamber is provided with an air passing opening, and the air passing opening is located at the upper edge of the side wall of the sunken groove away from the air outlet. The air outlet structure further includes a air supply chamber communicated with the air passing opening, and the bottom wall of the air supply chamber is formed by horizontally extending the lower edge surface of the air passing opening.

2. The air outlet structure according to claim 1, characterized in that, From the side connected to the air outlet towards the direction away from the air outlet, the inner diameter of the cross section of the sunken groove gradually increases.

3. The air outlet structure according to claim 1, characterized in that The lower edge surface of the air passing opening is higher than the middle or above the middle position of the air outlet. An installation position for installing an air treatment module is provided at the air passing opening, and the air treatment module extends upward relative to the sunken groove.

4. The air outlet structure according to claim 3, wherein, The air supply chamber includes a diversion section communicated with the air passing opening and a uniform section for connecting with a heat exchanger. The uniform section is connected to the side of the diversion section away from the air passing opening. The inner diameter of the cross section of the diversion section gradually decreases from the air passing opening to the uniform section.

5. The air outlet structure according to claim 3, wherein A fixing part for installing an air detection device is provided in the air supply chamber, and the air detection device includes a barometric pressure sensor and / or a temperature sensor and / or a humidity sensor.

6. The air outlet structure according to any one of claims 1 to 5, characterized in that, The first fan is a centrifugal fan, and the fan shaft of the first fan is arranged horizontally or vertically; And / or, the air outlet structure further includes a fan chamber for installing the first fan. The fan chamber is separated from the diffuser chamber by a partition board. The air outlet side of the first fan penetrates through the partition board and extends into the diffuser chamber.

7. An air treatment device, characterized in that, Including: A housing; A fresh air module, the fresh air module includes a fresh air duct provided in the housing and the air outlet structure according to any one of claims 1 to 6, and the air outlet structure is provided in the fresh air duct; An exhaust air module, the exhaust air module includes an exhaust air duct and an exhaust air fan provided in the exhaust air duct; And a total heat exchanger, the fresh air duct and the exhaust air duct cross through the total heat exchanger, and the air supply chamber of the air outlet structure is arranged above the air inlet side of the exhaust air fan.

8. The air treatment device according to claim 7, wherein, Further including: An indoor circulating air module, the indoor circulating air module has a circulating air duct, and the circulating air duct is provided with a circulating air inlet communicated with the indoor; And a bypass valve for connecting or blocking 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 and enter the fresh air duct to defrost the total heat exchanger.

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