Air conditioner air duct system outlet device

Abstract

The invention aims to solve the problem that in the prior art, an air conditioner air duct system is poor in indoor air outlet uniformity, and provides an air conditioner air duct system outlet device which comprises an air inlet connecting part. The cavity part is connected to the tail end of the air inlet connecting part; the air outlet part is connected to the lower part of the cavity part, and a plurality of air outlets are formed in the air outlet part; the cavity part comprises a mixing cavity of an inclined structure, one side of the mixing cavity communicates with the air inlet connecting part, and the other side of the mixing cavity communicates with the air outlet. The longitudinal sectional area of the side, close to the air inlet connecting part, in the mixing cavity is larger than that of the side, away from the air inlet connecting part, in the mixing cavity. Due to the fact that the mixing cavity of the inclined structure is adopted, the airflow organization size is continuously reduced, and the air pressure is also continuously reduced, the continuous pressurization effect of the airflow can be guaranteed through the mixing cavity with the gradually-changed size, and the indoor air outlet uniformity of the air conditioner air duct system is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of air conditioning, and in particular to an outlet device of an air duct system of an air conditioning. Background Art

[0002] In the existing air conditioning and heating field, the air outlet of the fresh air system equipment or other air conditioning system equipment is directly connected to the wind grille at the outlet through the terminal pipe. This structure is simple and easy to install. In use, due to the difference between the air parameters in the terminal pipe and the indoor air parameters, such as temperature and pressure differences, when the air in the terminal pipe directly enters the room through the wind grille, there is no airflow organization and divergence effect in this process, which can easily lead to the following problems: the instantaneous flow rate of the airflow after passing through the wind grille is too fast, which can easily generate airflow noise; for example, the terminal pipe diameter is Φ125mm, the motor voltage is selected as 3V, and the air volume is: 300m 3 / h as an example, the instantaneous wind speed passing through the wind grille can reach 3.9m / s, and the airflow noise is as high as 80 decibels or more, seriously affecting daily life or work. Secondly, during the cooling process of the existing structure, since the airflow organization flows directly out of the wind grille, the airflow organization divergence surface is 12265 square millimeters, which easily leads to the concentration of cooling airflow, and the overall cooling and cooling effect of the room is uneven. At the same time, too concentrated cooling airflow will cause poor physical sensation to the human body.

[0003] Taking the normal pressure state and the air inlet wind speed of 7.107m / s as an example, through computer simulation, the traditional air duct system outlet device, that is, the existing wind grille structure, is used, and the wind speed at the outlet is 4.551m / s. Figure 1 As shown, the cold air flow is more concentrated and the wind speed is faster, resulting in louder noise and poorer human body sensation.

[0004] Therefore, how to improve the indoor outlet effect of the air conditioning duct system has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] The present invention aims to at least solve the technical problems existing in the prior art and provide an outlet device for an air conditioning duct system to further improve the uniformity of air outlet of the air conditioning duct system indoors.

[0006] In order to achieve the above-mentioned objectives of the present invention, the present invention provides an air conditioning duct system outlet device, including an air inlet connecting portion; and a cavity portion connected to the end of the air inlet connecting portion; and an air outlet portion connected below the cavity portion, wherein the air outlet portion is provided with a plurality of air outlets; the cavity portion includes a mixing chamber with an inclined structure, wherein one side of the mixing chamber is connected to the air inlet connecting portion, and the other side of the mixing chamber is connected to the air outlet; and the longitudinal cross-sectional area of ​​the side of the mixing chamber close to the air inlet connecting portion is larger than the longitudinal cross-sectional area of ​​the side away from the air inlet connecting portion.

[0007] Furthermore, the cavity portion includes an inclined top plate and side plates symmetrically arranged on both sides of the top plate.

[0008] Furthermore, the air outlet portion includes a grid substrate, a plurality of air outlets are arranged on the grid substrate, and guide plates are arranged at the air outlets.

[0009] Furthermore, the guide plate and the air outlet grille are arranged to be inclined, wherein the inclination angle is 70°-90°.

[0010] Furthermore, a lifting lug is connected above the cavity portion, and the lifting lug is provided with an inclined connecting unit.

[0011] Furthermore, it also includes a waterproof device, which includes a first waterproof unit arranged between the air inlet connecting part and the cavity part, and / or a second waterproof unit between the cavity part and the air outlet part.

[0012] Furthermore, the cavity portion is also provided with a heat preservation unit.

[0013] When the present application is used in a specific manner, an outlet device for an air conditioning duct system includes an air inlet connection portion; wherein the air inlet connection portion can be selected from an air inlet main pipe and a flange connected to the air inlet main pipe; connected to each air duct of the air conditioning duct system through the air inlet main pipe, and then connected to the cavity portion through the flange; an air outlet portion connected below the cavity portion, wherein the air outlet portion is provided with a plurality of air outlets. The cavity portion can be selected from a sheet metal structural member, including a sheet metal member with an inclined structure, a mixing chamber is formed in the sheet metal member, wherein the mixing chamber has two external openings, one of which is connected to the air inlet connection portion, and the other opening of the mixing chamber is connected to the air outlet; and the longitudinal cross-sectional area of ​​the side of the mixing chamber close to the air inlet connection portion is greater than the longitudinal cross-sectional area of ​​the side away from the air inlet connection portion.

[0014] When the present application is used, the incoming air flow enters from one side of the air inlet connection part. During the process of continuous output of refrigerant gas to the room, due to the use of an inclined structured mixing chamber, the volume of the airflow organization continues to decrease and the air pressure also continues to decrease. Therefore, a mixing chamber with a gradually varying volume is used to ensure the continuous pressurization effect of the airflow and further ensure the stable output of the refrigerant gas pressure, thereby further improving the uniformity of the air outlet of the air-conditioning duct system in the room. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a simulation diagram of the wind speed at the air outlet when the wind speed at the air inlet is 7.107m / s in the existing air outlet structure;

[0016] Figure 2 It is a schematic diagram of the outlet device of the air conditioning duct system of the present invention from a first perspective;

[0017] Figure 3 is a schematic diagram of the outlet device of the air conditioning duct system of the present invention from a second viewing angle;

[0018] Figure 4 It is a schematic diagram of a grille substrate of an outlet device of an air conditioning duct system of the present invention from a first viewing angle;

[0019] Figure 5 It is a schematic diagram from a second viewing angle of the grille substrate of the outlet device of the air conditioning duct system of the present invention.

[0020] Figure 6 It is a schematic diagram of a grille substrate of another embodiment of an outlet device of an air conditioning duct system of the present invention.

[0021] Figure 7 This is a wind speed simulation diagram when the structure of the present invention is used, the wind speed at the air inlet is 7.107m / s, and the inclination angle of the air outlet guide plate is 80°;

[0022] Figure 8 This is a wind speed simulation diagram when the structure of the present invention is used, the wind speed at the air inlet is 4.746m / s, and the inclination angle of the air outlet guide plate is 80°;

[0023] Fig. 9 This is a comparison chart of wind speed at each air outlet;

[0024] Fig.10 This is a wind speed simulation diagram when the structure of the present invention is used, the wind speed at the air inlet is 7.107m / s, and the inclination angle of the air outlet guide plate is 70°;

[0025] Fig.11 This is a wind speed simulation diagram when the structure of the present invention is used, the wind speed at the air inlet is 7.107m / s, and the inclination angle of the air outlet guide plate is 90°;

[0026] Reference numerals:

[0027] Figure 1 , Figures 7 to 11 In the figure, IN indicates the air inlet side, and OUT indicates the air outlet side.

[0028] Figures 2 to 6 Among them, 110 is an air inlet connection part, 120 is a first waterproof unit, 210 is a mixing chamber, 211 is an insulation side plate, 212 is an insulation top plate, 220 is a lifting ear, 310 is an air outlet part, 311 is a second waterproof unit, and 312 is a guide plate. DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] In the description of the present invention, it is necessary to understand that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0032] Reference Figures 2 to 4 , Figure 7 , an air-conditioning duct system outlet device, comprising an air inlet connection portion 110; and a cavity portion connected to the end of the air inlet connection portion 110; and an air outlet portion 310 connected below the cavity portion, wherein the air outlet portion 310 is provided with a plurality of air outlets; the cavity portion comprises a mixing chamber 210 with an inclined structure, wherein one side of the mixing chamber 210 is connected to the air inlet connection portion 110, and the other side of the mixing chamber 210 is connected to the air outlet; and the longitudinal cross-sectional area of ​​the side of the mixing chamber 210 close to the air inlet connection portion 110 is greater than the longitudinal cross-sectional area of ​​the side away from the air inlet connection portion 110.

[0033] In the specific use of this embodiment, an outlet device of an air conditioning duct system includes an air inlet connection portion 110; wherein the air inlet connection portion 110 can select an air inlet main pipe and a flange connected to the air inlet main pipe; the air inlet main pipe is connected to each air duct of the air conditioning duct system, and then connected to the cavity portion through the flange; refer to the attached Figure 1 , Figure 2In the present invention, the air inlet connection part 110 can select an air inlet flange, including an air inlet main pipe and a flange welded together, wherein the material of the air inlet main pipe and the flange can be selected from Japanese SGCC steel, or other high-strength galvanized sheet materials to ensure corrosion resistance and strength. The air outlet part 310 connected below the cavity part, wherein the air outlet part 310 is provided with a plurality of air outlets. The cavity part can select a sheet metal structure, including a sheet metal part with an inclined structure, and a mixing chamber 210 is formed in the sheet metal part, wherein the mixing chamber 210 has two external openings, one of which is connected to the air inlet connection part 110, and the other opening of the mixing chamber 210 is connected to the air outlet; and the longitudinal cross-sectional area of ​​the side of the mixing chamber 210 close to the air inlet connection part 110 is larger than the longitudinal cross-sectional area of ​​the side away from the air inlet connection part 110.

[0034] In actual application, the air intake is from one side of the air inlet connection part 110. During the process of continuously outputting the refrigerant gas to the room, the volume of the airflow organization is continuously reduced, and the air pressure is also continuously reduced due to the use of the mixing chamber 210 with an inclined structure. Therefore, the use of the mixing chamber 210 with a gradient volume can ensure the continuous pressurization effect of the airflow, and further ensure the stable output of the refrigerant gas pressure, so as to further improve the uniformity of the air outlet of the air conditioning duct system in the room. Furthermore, in other embodiments of the present application, the cavity part includes an inclined top plate, and side plates symmetrically arranged on both sides of the top plate. Figure 2 , Figure 3 As shown, the cavity part forms the main structure of the structure of the present application, and the inclined top plate plays a guiding role on the airflow organization body, and plays a variable diameter continuous pressurization effect, which better adapts to the distribution of the airflow organization by the air inlet grille, thereby improving the uniformity of the air outlet. The present invention is made of SGCC steel bent, with a simple overall structure and high reliability.

[0035] Furthermore, in other embodiments of the present application, the air outlet portion 310 includes a grille substrate, a plurality of air outlets are arranged on the grille substrate, and a guide plate 312 is arranged at the air outlet. The grille substrate with a plate-like structure has a simple overall structure, and by arranging a plurality of air outlets on the grille substrate, a guide plate 312 is arranged at the air outlet; and the guide plate 312 is arranged at an angle to the grille substrate. In the present application, the guide plate 312 is arranged to adjust the air outlet angle of the air outlet, ensure the airflow organization of the grille is stable during the continuous air outlet process, avoid airflow disturbance, and reduce the noise of the air outlet. Not only is the structure simple, but also the manufacturing cost is low, and it is stable and reliable in use.

[0036] Furthermore, in other embodiments of the present application, the guide plate 312 and the grille substrate have an inclination angle of 70°-90°, and the guide effect is optimal. Specifically, if the guide plate 312 and the grille substrate have a relatively small inclination angle, for example, less than 70°, it greatly affects the air outlet efficiency. Although it can reduce noise, it also greatly limits the air outlet speed of the air outlet. This can easily cause cold air to be concentrated on the top of the indoor space on a large scale, resulting in uneven overall cooling effect. If the guide plate 312 and the grille substrate have an inclination angle that is too large, for example, when both are greater than 90°, although the air speed of the air outlet can be increased, the guide effect is poor and the noise reduction effect cannot be achieved; refer to the attached Figure 7 To Attachment Fig.11 After testing, it was found that when the inclination angle between the guide plate 312 and the grille substrate is 70°-90°, it can effectively reduce noise and achieve a good guiding effect, ensuring the flow speed and direction of the air at the air outlet. When the inclination angle between the guide plate 312 and the grille substrate is less than 70°, unevenness is more likely to occur on the side away from the air inlet. Similarly, when the inclination angle between the guide plate 312 and the grille substrate is greater than 90°, unevenness is more likely to occur on the side close to the air inlet. Therefore, the best effect is achieved when the inclination angle is 70°-90°, especially when it is 80°. Figure 8 shown.

[0037] Furthermore, in other embodiments of the present application, the left side of the grid substrate is the air inlet side, and the air outlet far from the air inlet side has a larger longitudinal cross-sectional area than the air outlet close to the air inlet side. Figure 6 As shown, one embodiment of the present invention involves 11 air outlets in total, wherein the left side of the grille substrate is the air inlet side, and the area of ​​each air outlet gradually increases from left to right, that is, the farther away from the air inlet side, the larger the area of ​​the air outlet. Since the air pressure close to the air inlet side is relatively higher than the air pressure far from the air inlet side, a relatively larger air outlet is set for the air outlet far from the air inlet side, so as to ensure the uniformity of the exhaust volume of each air outlet and improve the overall uniformity of the indoor cooling effect.

[0038] Further, in a specific embodiment of the present application, the air outlet and the guide plate 312 can both be rectangular structures, and the width of the air outlet matches the width of the guide plate 312. Figure 5 , 6 As shown, the rectangular air outlet has a lower manufacturing cost than a semicircular or other irregular shapes. Furthermore, the width of the air outlet can be selected to match the width of the guide plate 312, and the guide effect is better.

[0039] Furthermore, in order to facilitate the installation of the structure of the present application, a hanging ear 220 is connected above the cavity portion, and the hanging ear 220 is provided with an inclined connection unit. The structure of the present application can be hung and installed on the ceiling of the room through the hanging ear 220, such as Figure 2 As shown, the ear 220 is a sheet metal part as a whole, which can be connected to the cavity part by connecting screws, and two connecting units arranged opposite to each other at an angle are arranged above the ear 220; the specific use is that the two inclined connecting units are engaged with the indoor ceiling to achieve the convenience of connection.

[0040] Furthermore, if Figure 2 As shown, the structure of the invention also includes a waterproof device, which includes a first waterproof unit 120 arranged between the air inlet connection part 110 and the cavity part, and / or a second waterproof unit 311 between the cavity part and the air outlet part 310. During the refrigeration process, since water droplets are easily formed in the condensation of air, and the structure of the present application is mostly made of metal materials, in order to prevent the corrosion of the metal material by the condensed water and improve the service life of the structure of the present application, a waterproof cotton layer can be selected between the air inlet connection part 110 and the cavity part as the first waterproof unit 120, or a waterproof cotton layer can be selected between the cavity part and the air outlet part 310 as the second waterproof unit 311, so as to achieve the effect of reducing corrosion and improving service life.

[0041] Furthermore, in the specific implementation of the present application, the cavity portion is also provided with a heat preservation unit. The specific heat preservation unit of the cavity portion can be selected according to the cavity structure, such as Figure 2 As shown, the cavity includes an inclined top plate and side plates symmetrically arranged on both sides of the top plate, and its insulation unit also includes an inclined insulation top plate 212 and insulation side plates 211 arranged on both sides. The insulation top plate 212 and the insulation side plates 211 can both be vacuum insulation panels in the prior art, so as to achieve insulation effect and avoid loss of cooling effect.

[0042] In this application, the terminal pipe diameter is Φ125mm as an example, that is, the diameter of the air inlet main pipe is Φ125mm, and the air volume is 300m 3 / h; its wind speed is reduced from 3.9m / s in the existing technology to 1.6m / s; the airflow noise is controlled within 45 decibels; the airflow organization divergence surface is increased from the existing 12265 square millimeters to 44000 square millimeters, which greatly improves the uniformity of cooling.

[0043] Furthermore, the actual application effect of the structure of the present invention is simulated by computer, referring to Figures 7 to 11 , wherein the first embodiment, with reference to Figure 7, also under normal pressure, high wind speed simulation is implemented, that is, the inlet wind speed is 7.107m / s as an example, the structure of the present invention is adopted, and the inclination angle of the outlet guide plate 312, that is, the inclination angle between the guide plate 312 and the grille substrate is 80°; at this time, the average wind speed at the outlet is 2.041m / s.

[0044] The second embodiment, referring to Figure 8 , also under normal pressure, low wind speed simulation is implemented, that is, the air inlet wind speed is adjusted to 4.746m / s, and the structure of the present invention is adopted. The inclination angle of the guide plate 312 and the grid substrate is also selected to be 80°; at this time, the average wind speed at the air outlet is 1.413m / s.

[0045] Further, refer to Fig. 9 By testing the flow rate of each air outlet under the previous two embodiments, it can be known that the structure of the present application has a more uniform flow rate at the air outlet compared to the prior art, and the airflow organization is stable during the air outlet process, avoiding airflow disturbance.

[0046] Furthermore, under the same wind speed condition, the inclination angle of the guide plate is adjusted for further testing. Fig.10 Under normal pressure, the air inlet wind speed is selected to be 7.107 m / s. The structure of the present invention is adopted, and the inclination angle of the air outlet guide plate 312 is adjusted to 70°. At this time, the wind direction of the air outlet is biased towards the air inlet side, that is, it appears to be slightly forward. At this time, the average wind speed of the air outlet is 2.179 m / s.

[0047] Fourth embodiment, reference Fig.11 Under normal pressure, the air inlet wind speed is selected to be 7.107 m / s. The structure of the present invention is adopted, and the inclination angle of the air outlet guide plate 312 is adjusted to 90°. At this time, the wind direction of the air outlet is biased away from the air inlet side, that is, it appears to be slightly backward. At this time, the average wind speed of the air outlet is 2.214 m / s.

[0048] It can be seen from the above embodiments that the air intake airflow of the present invention is taken in from one side of the air inlet connection part. During the process of continuous output of refrigerant gas to the room, due to the use of a mixing chamber with an inclined structure, the airflow organization volume is continuously reduced and the air pressure is also continuously reduced. Therefore, the use of a mixing chamber with a gradually variable volume can ensure the continuous pressurization effect of the airflow and further ensure the stable output of the refrigerant gas pressure, thereby further improving the uniformity of the air outlet of the air-conditioning duct system in the room.

[0049] By further comparing the first, third and fourth embodiments, it can be seen that when the inclination angle between the guide plate 312 and the grille substrate is 80°, the flow velocity at the air outlet is relatively low, the noise is relatively low, and the human body feeling is relatively good.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0051] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An air conditioning duct system outlet device, characterized in that: The invention comprises an air inlet connection part (110); a cavity part connected to the end of the air inlet connection part (110); and an air outlet part (310) connected below the cavity part, wherein the air outlet part (310) is provided with a plurality of air outlets; the cavity part comprises a mixing chamber (210) having an inclined structure, wherein one side of the mixing chamber (210) is connected to the air inlet connection part (110), and the other side of the mixing chamber (210) is connected to the air outlet; and the longitudinal cross-sectional area of ​​the side of the mixing chamber (210) close to the air inlet connection part (110) is greater than the longitudinal cross-sectional area of ​​the side away from the air inlet connection part (110).

2. The air conditioning duct system outlet device according to claim 1, characterized in that: The cavity portion includes an inclined top plate and side plates symmetrically arranged on both sides of the top plate.

3. The air conditioning duct system outlet device according to claim 1 or 2, characterized in that: The air outlet portion (310) comprises a grid substrate, on which a plurality of air outlets are arranged, and guide plates (312) are arranged outside the air outlets.

4. The air conditioning duct system outlet device according to claim 3, characterized in that: The guide plate (312) is arranged to be inclined with respect to the air outlet grille, wherein the inclination angle is between 70° and 90°.

5. The air conditioning duct system outlet device according to claim 1, 2 or 4, characterized in that: A lifting lug (220) is also connected above the cavity portion, and the lifting lug (220) is provided with an inclined connection unit.

6. The air conditioning duct system outlet device according to claim 1, 2 or 4, characterized in that: It also includes a waterproof device, which includes a first waterproof unit (120) arranged between the air inlet connecting part (110) and the cavity part, and / or a second waterproof unit (311) between the cavity part and the air outlet part (310).

7. The air conditioning duct system outlet device according to claim 1, 2 or 4, characterized in that: The cavity portion is also provided with a heat preservation unit.

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