A ventilation structure for doors, windows and curtain walls

Abstract

This invention discloses a ventilation structure for doors, windows, and curtain walls, comprising: a shell, a guide frame, and an air supply assembly; the shell includes a main frame; the main frame has a flow stabilizing cavity and an air outlet channel; the guide frame is provided on the main frame; the guide frame has a jet channel and an expansion channel; the inlet channel, expansion channel, and outlet channel are sequentially connected; one end of the jet channel is connected to the flow stabilizing cavity, and the other end is connected to the side of the expansion channel near the inlet channel; the expansion channel continuously bends from the end near the inlet channel to the end away from the inlet channel, and the cross-sectional area gradually expands; the air supply assembly includes a fan, and the fan's outlet is connected to the flow stabilizing cavity. Through the structural cooperation of the jet channel and the expansion channel, utilizing the wall adhesion effect of the airflow, a small amount of high-speed airflow generated by the fan can induce and carry a large amount of outdoor air into the room, resulting in higher ventilation efficiency than ordinary direct current ventilators.

Description

Technical Field

[0001] This invention relates to the field of building ventilation structure technology, and in particular to a ventilation structure for doors, windows and curtain walls. Background Technology

[0002] High-rise buildings often require the use of doors, windows, and curtain walls. Integrating ventilation structures into doors, windows, and curtain walls has become an important means of solving the air circulation problem in high-rise buildings. To meet the demand for higher air exchange efficiency, active ventilation structures have been widely used.

[0003] However, existing active ventilation structures still have the following limitations in practical applications: (1) High energy consumption and low induction efficiency: Existing ventilation structures mostly adopt the structure of adding cross-flow fans or DC fans in the ventilation path. These structures not only have high energy consumption, but also have extremely limited induction ability to the surrounding air due to the lack of effective and efficient flow channel design. As a result, the actual ventilation effect is often difficult to achieve the ideal expectation when the power consumption is large. (2) Difficult to clean and high maintenance cost: During long-term operation, the existing ventilation structure is prone to a large amount of dust and dirt on its ventilation path and the surface of the fan blades. The fan blades will block the insertion of cleaning tools, making it difficult for maintenance personnel to reach the internal contaminated areas. The cleaning and maintenance process is extremely inconvenient. Long-term operation will lead to further deterioration of ventilation performance and even secondary pollution of the air. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the purpose of this invention is to propose a ventilation structure for doors, windows and curtain walls, so as to solve the problems of high energy consumption, low induction efficiency, difficult cleaning and high maintenance cost in the existing ventilation structures.

[0005] A ventilation structure for doors, windows, and curtain walls includes: a shell, a guide frame, a side frame, and an air supply assembly; the shell includes a main frame; the main frame has a flow stabilizing cavity and an air outlet channel; the guide frame is provided on the main frame; the guide frame has a jet channel and an expansion channel; the side frame is located on one side of the main frame and has an air inlet channel; the air inlet channel, the expansion channel, and the air outlet channel are connected in sequence to form a ventilation path from the outdoor side to the indoor side; one end of the jet channel is connected to the flow stabilizing cavity, and the other end is connected to the side of the expansion channel near the air inlet channel; the expansion channel bends continuously from the end near the air inlet channel to the end away from the air inlet channel, and the cross-sectional area gradually expands; the jet direction of the jet channel is consistent with the tangential direction of the inner wall of the expansion channel; the air supply assembly includes a fan, the fan outlet is connected to the flow stabilizing cavity, and the fan inlet is connected to the indoor side.

[0006] Preferably, the side frame is provided with a strip cavity, and the air supply assembly also includes a flow divider; the strip cavity is connected to the air outlet through the flow divider; an air curtain strip is provided on the side frame, the air curtain strip is located on one side of the air inlet end of the air inlet channel, and the air curtain strip is provided with a jet slit and a flow-guiding surface; one end of the jet slit is connected to the strip cavity, and the other end is located on one side of the air inlet end of the air inlet channel; the flow-guiding surface is located between the air inlet end of the air inlet channel and the jet slit, the jet direction of the jet slit is consistent with the tangent direction of the starting end of the flow-guiding surface, and the tangent direction of the ending end of the flow-guiding surface intersects with the air inlet direction of the air inlet channel.

[0007] Preferably, a vent plate is provided on the side frame, and the vent plate is located at the air inlet end of the air inlet channel; the vent plate is provided with at least one S-shaped channel, one end of the S-shaped channel is connected to the air inlet channel, and the other end is connected to the outdoor side; the S-shaped channel extends smoothly and continuously downward along the S-shaped path from the end close to the air inlet channel toward the outdoor side.

[0008] Preferably, the air supply assembly further includes a filter frame and a filter element; the filter frame is detachably mounted on the air inlet of the fan, and the filter element is detachably mounted on the filter frame, with the filter element covering the air inlet of the fan.

[0009] Preferably, the vent plate is provided with a filter screen, which covers the end of the S-shaped flow channel away from the air inlet flow channel.

[0010] Preferably, the housing also includes a sealing cover, which is movably disposed on the main frame. When the sealing cover is located near the air outlet channel, it blocks the air outlet channel.

[0011] Preferably, the flow guide frame consists of an expansion frame and a flow restricting frame fixed to the main frame; the jet flow channel is a racetrack-shaped gap between the expansion frame and the flow restricting frame; the expansion flow channel is located inside the expansion frame.

[0012] Preferably, the ventilation structure for this door, window and curtain wall also includes a thermal break; the thermal break is fixed to one side of the main frame; the side of the thermal break away from the main frame is fixed to the side frame; the air inlet channel passes through the thermal break and connects to the expansion channel.

[0013] Preferably, the side frame further includes an arc-shaped plate, a mounting frame, and several partitions; the arc-shaped plate, the mounting frame, and two of the partitions enclose an air inlet channel.

[0014] Preferably, the bottom surface of the mounting frame protrudes downward to form a raised strip; the raised strip is located on the side of the vent plate opposite to the main frame.

[0015] Beneficial effects: (1) By combining the structure of the jet channel and the expansion channel, the airflow is attached to the wall, so that a small amount of high-speed airflow generated by the fan can induce and drive a large amount of outdoor air into the room, so as to form a stable airflow from the outdoor side to the indoor side. The ratio of the airflow from the outdoor side to the airflow ejected by the jet channel is between 2:1 and 4:1. Under the same energy consumption, it has higher ventilation efficiency than ordinary DC ventilators. Furthermore, the high-speed airflow ejected by the jet channel induces airflow in the ventilation path of this ventilation structure, so that there are no fan blades blocking the ventilation path, which makes it easier to insert cleaning tools and make cleaning and maintenance more convenient.

[0016] (2) Part of the airflow diverted from the air outlet is guided by the air curtain strip to form a sheet-like air curtain, so as to reduce the impurity content in the air entering the air inlet channel, thereby improving the cleanliness of the air entering the room. In addition, the sheet-like air curtain can also blow the liquid droplets in the air away from the air inlet end of the air inlet channel, reducing the liquid droplet content in the air entering the room, thereby preventing rainwater from flowing back into the room through the ventilation structure on rainy days. Moreover, the removal of impurities and liquid droplets in the air by the air curtain has the advantages of easy maintenance, reduced consumables, and stable effect compared with the traditional adsorption removal method.

[0017] (3) When air passes through the S-shaped channel, a small number of droplets in the air come into contact with the inner wall of the S-shaped channel, causing the droplets to adhere to the inner wall of the S-shaped channel. Then, the droplets flow down along the inner wall of the S-shaped channel under their own gravity, while the air can flow in along the S-shaped channel, thereby further reducing the droplet content in the air that is introduced, and more effectively preventing rainwater from flowing back into the room through the ventilation structure on rainy days; and when the outdoor air carrying sound waves passes through the S-shaped channel, the sound waves are reflected and interfered with the inner wall of the S-shaped channel, thereby significantly weakening the sound wave energy, so as to achieve a good sound insulation and noise reduction effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the first three-dimensional structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the second three-dimensional structure of the present invention.

[0020] Figure 3 This is a schematic diagram of the first cross-sectional three-dimensional structure of the present invention.

[0021] Figure 4 This is a cross-sectional structural diagram of the present invention.

[0022] Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle.

[0023] Figure 6 This is a schematic diagram of the airflow direction of the present invention.

[0024] Figure 7 This is a schematic diagram of the second cross-sectional three-dimensional structure of the present invention.

[0025] Figure 8 This is a schematic diagram of the third cross-sectional three-dimensional structure of the present invention.

[0026] Figure 9 This is an exploded three-dimensional structural diagram of the flow guide frame, thermal break bridge, and side frame of the present invention.

[0027] Figure 10 This is an exploded three-dimensional structural diagram of the air supply component of the present invention.

[0028] Figure 11 This is a cross-sectional three-dimensional structural diagram of the side frame and diversion component of the present invention.

[0029] Specific reference numerals in the attached drawings: 10. Shell; 11. Main frame; 111. Air outlet duct; 12. Flow stabilizing cavity; 13. Sealing cover; 20. Flow guide frame; 21. Expansion frame; 22. Flow limiting frame; 23. Expansion duct; 24. Jet duct; 30. Thermal break; 31. Lower thermal break; 32. Upper thermal break; 40. Side frame; 41. Arc plate; 42. Mounting frame; 421. Protruding strip; 43. Vent plate; 4 31. S-shaped flow channel; 432. Filter screen; 44. Strip cavity; 45. Air curtain strip; 451. Jet slit; 452. Flow-adapting curved surface; 46. Baffle plate; 50. Air inlet flow channel; 60. Air supply assembly; 61. Mounting box; 62. Fan; 621. Air outlet; 622. Air inlet; 63. Flow divider; 64. Filter frame; 65. Filter element; 70. Mounting frame; 71. Lower frame; 72. Upper frame. Detailed Implementation

[0030] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0031] In the description of this invention, it should be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] A ventilation structure for doors, windows, and curtain walls, such as Figures 1-5 As shown, it includes: a housing 10, a flow guide frame 20, a side frame 40, and an air supply assembly 60; doors, windows, and curtain walls all include mounting frames 70, which include a lower frame 71 and an upper frame 72. The housing 10 is installed on the indoor side of the mounting frame 70, and the side frame 40 is installed on the outdoor side of the mounting frame 70; the housing 10 includes a main frame 11; the main frame 11 is provided with a flow stabilizing cavity 12 and an air outlet duct 111; the main frame 11 is provided with a flow guide frame 20; the flow guide frame 20 is provided with a jet duct 24 and an expansion duct 23.

[0035] like Figures 3-9 As shown, the side frame 40 is located on one side of the main frame 11, and the side frame 40 is provided with an air inlet channel 50. The air inlet channel 50 passes through the gap between the lower frame 71 and the upper frame 72. The air inlet channel 50, the expansion channel 23 and the air outlet channel 111 are connected in sequence to form a ventilation path from the outdoor side to the indoor side. One end of the jet channel 24 is connected to the flow stabilizing cavity 12, and the other end is connected to the side of the expansion channel 23 near the air inlet channel 50. Specifically, the jet channel 24 is a racetrack-shaped slit, which is composed of two interconnected semi-circular arc channels and two straight channels. Both ends are semi-circular arc channels, and the two semi-circular arc channels are connected to two straight channels. The flow stabilizing cavity 12 surrounds the outside of the guide frame 20. The flow stabilizing cavity 12 plays a buffering role, so that the air pressure distribution inside the flow stabilizing cavity 12 is uniform, so that the high-pressure air inside the flow stabilizing cavity 12 can be uniformly ejected through the racetrack-shaped jet channel 24.

[0036] like Figure 4 , Figure 5 and Figure 6As shown, the expansion channel 23 bends continuously from one end near the air inlet channel 50 to the end away from the air inlet channel 50, and the cross-sectional area of ​​the flow gradually expands; specifically, the inner wall of the expansion channel 23 presents a trumpet-shaped structure that smoothly transitions from narrow to wide; the jet direction of the jet channel 24 is consistent with the tangential direction of the inner wall of the expansion channel 23, so that the jetted airflow adheres to the surface of the expansion channel 23 under the guidance of the inner wall of the expansion channel 23 and flows, and finally merges into the outlet channel 111.

[0037] like Figure 3 , Figure 7 and Figure 10 As shown, the air supply assembly 60 includes a mounting box 61 and a fan 62. The mounting box 61 is fixed to the main frame 11, and the fan 62 is installed inside the mounting box 61. The air outlet 621 of the fan 62 is connected to the flow stabilizing chamber 12, and the air inlet 622 of the fan 62 is connected to the indoor side. Specifically, the fan 62 is a centrifugal fan. The air inlet 622 of the fan 62 is vertically upward, and the air outlet 621 of the fan 62 is horizontal. This is only a supplementary description of the fan 62. The fan 62 can also be a component that can supply high-pressure air, such as a miniature air compressor. Since the fan 62 is not located in the ventilation path, the noise generated by its operation can be blocked by the mounting box 61 and the main frame 11, making this ventilation structure quieter.

[0038] In use, the outdoor side, air inlet channel 50, expansion channel 23, air outlet channel 111, and indoor side are connected in sequence. The fan 62 is then started, drawing indoor air into the flow stabilization chamber 12, creating uniform high-pressure air within it. The airflow is then evenly ejected through the racetrack-shaped jet channel 24. The high-speed airflow is ejected tangentially along the inner wall of the expansion channel 23. Due to the wall adhesion effect, the ejected high-speed airflow adheres to the surface of the expansion channel 23 under its guidance and eventually flows into the air outlet channel 111. The high-speed airflow adhering to the inner wall of the expansion channel 23 is guided within the expansion channel 23. The remaining air flows towards the outlet duct 111, thereby creating a negative pressure zone within the expansion duct 23. This allows outdoor air to flow into the expansion duct 23 via the inlet duct 50. Through the structural cooperation between the jet duct 24 and the expansion duct 23, and utilizing the wall adhesion effect of the airflow, a small amount of high-speed airflow generated by the fan 62 can induce and carry a large amount of outdoor air into the room, forming a stable airflow from the outdoor side to the indoor side. The ratio of the airflow from the outdoor side to the airflow ejected from the jet duct 24 is between 2:1 and 4:1. Under the same energy consumption, this provides higher ventilation efficiency than ordinary DC ventilators.

[0039] Ventilation paths often accumulate a lot of dirt, requiring occasional cleaning and maintenance during daily use. However, this ventilation structure uses high-speed airflow ejected through jet channel 24 to induce airflow within the ventilation path, eliminating the obstruction of fan blades and facilitating the insertion of cleaning tools, making cleaning and maintenance more convenient.

[0040] More preferably, such as Figures 3-7 and Figure 11 As shown, the side frame 40 is provided with a strip cavity 44, and the air supply assembly 60 also includes a diversion component 63; the strip cavity 44 is connected to the air outlet 621 through the diversion component 63; specifically, the diversion component 63 is a number of parallel manifolds; an air curtain strip 45 is provided on the side frame 40, the air curtain strip 45 is located on one side of the air inlet end of the air inlet channel 50, and the air curtain strip 45 is provided with a jet slit 451 and a flow-guiding surface 452; one end of the jet slit 451 is connected to the strip cavity 44, and the other end is located on one side of the air inlet end of the air inlet channel 50; the flow-guiding surface 452 is located between the air inlet end of the air inlet channel 50 and the jet slit 451, and the jet slit 451... The ejection direction is consistent with the tangent direction at the beginning of the flow surface 452, and the tangent direction at the end of the flow surface 452 intersects with the air intake direction of the air intake channel 50. Specifically, the air intake direction of the air intake channel 50 is vertically upward, while the tangent direction at the end of the flow surface 452 is preferably horizontal. If necessary, if it is necessary to increase the air intake volume, the tangent direction at the end of the flow surface 452 can be set to be inclined upward. If it is necessary to reduce the dust in the air introduced, the tangent direction at the end of the flow surface 452 can also be set to be inclined upward. It should be noted that the tangent direction at the end of the flow surface 452 must not point directly to the air intake end.

[0041] The fan 62 draws indoor air into the stabilizing cavity 12 and the strip cavity 44, respectively. A uniform high-pressure airflow is also formed in the strip cavity 44. The airflow from the outlet 621 into the stabilizing cavity 12 accounts for approximately 90% of the total airflow from the fan 62. The airflow from the outlet 621 into the strip cavity 44 via the diverting component 63 accounts for approximately 10% of the total airflow from the fan 62. Then, the high-pressure air in the strip cavity 44 is uniformly ejected through the injection slit 451. The airflow ejected from the injection slit 451 flows under the guidance of the lateral flow surface 452. A portion of the high-speed airflow guides the airflow to adhere to the lateral flow surface 452, thereby increasing the airflow on the surface of the lateral flow surface 452. After the flow surface 452, a sheet-like air curtain is formed. The sheet-like air curtain is located below the air inlet end of the air inlet channel 50. Before the air carrying dust and other impurities enters the air inlet channel 50, the impurities need to pass through the sheet-like air curtain. The sheet-like air curtain blows the impurities in the air away from the air inlet end of the air inlet channel 50. In this way, part of the airflow diverted from the air outlet 621 is guided by the air curtain strip 45 to form a sheet-like air curtain, so as to reduce the impurity content in the air entering the air inlet channel 50, thereby improving the cleanliness of the air entering the room. In addition, the sheet-like air curtain can also blow the liquid droplets in the air away from the air inlet end of the air inlet channel 50, reducing the liquid droplet content in the air entering the room, thereby preventing rainwater from flowing back into the room through the ventilation structure on rainy days.

[0042] Compared to traditional adsorption methods, removing impurities and droplets from the air via an air curtain offers advantages such as easier maintenance, reduced material consumption, and stable performance. Furthermore, the air curtain's location upstream of the air inlet duct 50 effectively reduces dirt buildup along the ventilation path, resulting in cleaner air and facilitating the cleaning and maintenance of the ventilation structure.

[0043] More preferably, such as Figures 3-6 and Figure 11 As shown, a vent plate 43 is provided on the side frame 40, and the vent plate 43 is located at the air inlet end of the air inlet channel 50; the vent plate 43 is provided with at least one S-shaped channel 431, one end of the S-shaped channel 431 is connected to the air inlet channel 50, and the other end is connected to the outdoor side; the S-shaped channel 431 extends smoothly and continuously downward along the S-shaped path from the end near the air inlet channel 50 towards the outdoor side.

[0044] When air passes through the S-shaped flow channel 431, a small number of droplets in the air come into contact with the inner wall of the S-shaped flow channel 431, causing the droplets to adhere to the inner wall of the S-shaped flow channel 431. Then, under the action of their own gravity, the droplets flow downward along the inner wall of the S-shaped flow channel 431, while the air can flow in along the S-shaped flow channel 431, thereby further reducing the droplet content in the incoming air and more effectively preventing rainwater from flowing back into the room through the ventilation structure on rainy days.

[0045] When the outdoor air carrying sound waves passes through the S-shaped flow channel 431, the sound waves are reflected and interfered with the inner wall of the S-shaped flow channel 431, which can significantly weaken the sound wave energy and achieve a good sound insulation and noise reduction effect.

[0046] More preferably, such as Figure 10 As shown, the air supply assembly 60 also includes a filter frame 64 and a filter element 65; the filter frame 64 is detachably mounted on the air inlet 622 of the fan 62, and the filter element 65 is detachably mounted on the filter frame 64, covering the air inlet 622 of the fan 62.

[0047] The bottom of the filter frame 64 is provided with a slotted partition or mesh to prevent foreign objects from falling into the fan 62. Before the indoor air enters the fan 62, the filter element 65 is used to adsorb impurities in the indoor air, so as to avoid clogging of the fan 62, the jet channel 24 and the jet slit 451, improve the durability of the ventilation structure, and the filter element 65 can reduce the noise generated by the fan 62 to a certain extent, making the ventilation structure quieter during use.

[0048] More preferably, such as Figure 11 As shown, the ventilation plate 43 is provided with a filter screen 432, which covers the end of the S-shaped flow channel 431 away from the air inlet flow channel 50.

[0049] The filter 432 is used to prevent mosquitoes, crawling insects, etc. from entering the S-shaped flow channel 431.

[0050] More preferably, such as Figure 1 and Figure 9 As shown, the housing 10 also includes a sealing cover 13, which is movably disposed on the main frame 11. When the sealing cover 13 is located near the air outlet duct 111, the sealing cover 13 blocks the air outlet duct 111.

[0051] The sealing cover 13 is used to seal the air outlet duct 111, isolating the indoor side from the outdoor side when this ventilation structure is not needed.

[0052] More preferably, such as Figure 4 , Figure 5 and Figure 9 As shown, the flow guide frame 20 consists of an expansion frame 21 and a flow restricting frame 22 fixed to the main frame 11; the jet flow channel 24 is a racetrack-shaped gap between the expansion frame 21 and the flow restricting frame 22; the expansion flow channel 23 is located inside the expansion frame 21.

[0053] Since both ends of the flow guide frame 20 need to be tightly fitted to the main frame 11 to prevent air from leaking out from the gaps at both ends, and the main frame 11 is usually made of aluminum profile, the flow guide frame 20 cannot be integrally formed with the main frame 11. When the flow guide frame 20 is installed into the main frame 11, if an integrally formed flow guide frame is used, the flow guide frame is easily squeezed by the main frame 11, and the installation process is more cumbersome. However, the flow guide frame 20 is composed of the mutually separated expansion frame 21 and flow limiting frame 22. Compared with an integrally formed flow guide frame, it can be installed into the main frame 11 more easily, and the assembly efficiency is higher.

[0054] More preferably, such as Figures 1-6 As shown, the ventilation structure for this door and window curtain wall also includes a thermal break 30; the thermal break 30 includes a lower thermal break 31 and an upper thermal break 32, the upper thermal break 32 abuts against the bottom surface of the upper frame 72, the lower thermal break 31 abuts against the top surface of the lower frame 71, and both the lower thermal break 31 and the upper thermal break 32 are fixed between the side frame 40 and the main frame 11; the thermal break 30 is made of high-strength thermal insulation material; the thermal break 30 is fixed to one side of the main frame 11; the side of the thermal break 30 away from the main frame 11 is fixed to the side frame 40; the air inlet channel 50 passes through the thermal break 30 and connects to the expansion channel 23.

[0055] The side frame 40 and the main frame 11 are connected by a thermal break 30 to disconnect the side frame 40 and the main frame 11. The thermal break 30 has extremely low thermal conductivity, which greatly reduces the heat transfer efficiency between the side frame 40 and the main frame 11. This makes the surface temperature of the shell 10 less susceptible to the influence of the outdoor temperature and makes the surface temperature of the shell 10 closer to the indoor temperature. This prevents liquefied water droplets from adhering to the indoor surface of the ventilation structure in cold weather, so that the ventilation structure can be used normally.

[0056] More preferably, such as Figure 3 and Figure 4 As shown, the side frame 40 also includes an arc-shaped plate 41, a mounting frame 42, and several partitions 46; the arc-shaped plate 41, the mounting frame 42, and two of the partitions 46 enclose an air inlet channel 50. The partitions 46 are made of high-strength heat-insulating material. The mounting frame 42 is fixed to the side of the lower broken bridge 31 away from the main frame 11, and the arc-shaped plate 41 is fixed to the side of the upper broken bridge 32 away from the main frame 11. The mounting frame 42 is equipped with a ventilation plate 43, an air curtain strip 45, a diversion component 63, and partitions 46. The arc-shaped plate 41 is tightly fitted to the mounting frame 42.

[0057] In actual installation, the ventilation plate 43, air curtain strip 45, diversion component 63 and partition plate 46 are first installed on the mounting frame 42, and then the arc plate 41 is assembled on the mounting frame 42 to avoid the arc plate 41 from obstructing the installation of the ventilation plate 43, air curtain strip 45, diversion component 63 and partition plate 46, so as to make the assembly efficiency of this ventilation structure higher.

[0058] More preferably, such as Figure 5 As shown, the bottom surface of the mounting frame 42 protrudes downward to form a raised strip 421; the raised strip 421 is located on the side of the vent plate 43 away from the main frame 11.

[0059] Rainwater is blocked by the raised strip 421, and rainwater drips down along the lower edge of the raised strip 421 to prevent rainwater from seeping into the air inlet channel 50 along the outside of the mounting frame 42.

[0060] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A ventilation structure for doors, windows, and curtain walls, characterized in that, include: Housing (10), air guide frame (20), side frame (40) and air supply assembly (60); The housing (10) includes a main frame (11); the main frame (11) is provided with a flow stabilizing cavity (12) and an air outlet channel (111). The main frame (11) is provided with the flow guide frame (20); the flow guide frame (20) is provided with a jet channel (24) and an expansion channel (23). The side frame (40) is located on one side of the main frame (11), and the side frame (40) is provided with an air inlet channel (50); the air inlet channel (50), the expansion channel (23) and the air outlet channel (111) are connected in sequence to form a ventilation path from the outdoor side to the indoor side; one end of the jet channel (24) is connected to the flow stabilizing cavity (12), and the other end is connected to the side of the expansion channel (23) near the air inlet channel (50); The expansion channel (23) bends continuously from one end near the air inlet channel (50) to the end away from the air inlet channel (50), and the cross-sectional area of ​​the flow gradually expands; the jet direction of the jet channel (24) is consistent with the tangential direction of the inner wall surface of the expansion channel (23); The air supply assembly (60) includes a fan (62), the air outlet (621) of the fan (62) is connected to the flow stabilizing cavity (12), and the air inlet of the fan (62) is connected to the indoor side.

2. The ventilation structure for doors, windows, and curtain walls according to claim 1, characterized in that, The side frame (40) is provided with a strip cavity (44), and the air supply assembly (60) further includes a flow divider (63); the strip cavity (44) is connected to the air outlet (621) through the flow divider (63); the side frame (40) is provided with an air curtain strip (45), the air curtain strip (45) is located on one side of the air inlet end of the air inlet channel (50), and the air curtain strip (45) is provided with a jet slit (451) and a flow-guiding surface (452); the... One end of the jet slit (451) is connected to the strip cavity (44), and the other end is located on one side of the air inlet end of the air inlet channel (50); the accompanying flow surface (452) is located between the air inlet end of the air inlet channel (50) and the jet slit (451), the jetting direction of the jet slit (451) is consistent with the tangent direction at the beginning of the accompanying flow surface (452), and the tangent direction at the end of the accompanying flow surface (452) intersects with the air inlet direction of the air inlet channel (50).

3. The ventilation structure for doors, windows, and curtain walls according to claim 1, characterized in that, A ventilation plate (43) is provided on the side frame (40), and the ventilation plate (43) is located at the air inlet end of the air inlet channel (50); at least one S-shaped channel (431) is provided on the ventilation plate (43), one end of the S-shaped channel (431) is connected to the air inlet channel (50), and the other end is connected to the outdoor side; the S-shaped channel (431) extends smoothly and continuously downward along the S-shaped path from the end close to the air inlet channel (50) towards the outdoor side.

4. The ventilation structure for doors, windows, and curtain walls according to claim 1, characterized in that, The air supply assembly (60) further includes a filter frame (64) and a filter element (65); the filter frame (64) is detachably mounted on the air inlet (622) of the fan (62), and the filter element (65) is detachably mounted on the filter frame (64), the filter element (65) covering the air inlet (622) of the fan (62).

5. The ventilation structure for doors, windows, and curtain walls according to claim 3, characterized in that, The ventilation plate (43) is provided with a filter (432), which covers the end of the S-shaped flow channel (431) away from the air inlet flow channel (50).

6. The ventilation structure for doors, windows, and curtain walls according to claim 1, characterized in that, The housing (10) also includes a sealing cover (13), which is movably disposed on the main frame (11). When the sealing cover (13) is located near the air outlet channel (111), the sealing cover (13) blocks the air outlet channel (111).

7. The ventilation structure for doors, windows, and curtain walls according to claim 1, characterized in that, The flow guide frame (20) consists of an expansion frame (21) and a flow limiting frame (22) fixed to the main frame (11); the jet channel (24) is a racetrack-shaped gap between the expansion frame (21) and the flow limiting frame (22); the expansion channel (23) is located inside the expansion frame (21).

8. The ventilation structure for doors, windows, and curtain walls according to claim 1, characterized in that, The ventilation structure for this door and window curtain wall also includes a thermal break (30); the thermal break (30) is fixed to one side of the main frame (11); the side of the thermal break (30) away from the main frame (11) is fixed to the side frame (40); the air inlet channel (50) passes through the thermal break (30) and then connects to the expansion channel (23).

9. The ventilation structure for doors, windows, and curtain walls according to claim 3, characterized in that, The side frame (40) also includes an arc-shaped plate (41), a mounting frame (42), and several partitions (46); the arc-shaped plate (41), the mounting frame (42), and two of the partitions (46) together form an air inlet channel (50).

10. The ventilation structure for doors, windows, and curtain walls according to claim 9, characterized in that, The mounting frame (42) has a raised strip (421) protruding downwards from the bottom surface; the raised strip (421) is located on the side of the vent plate (43) away from the main frame (11).

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