A building window of double seal construction

Abstract

The application discloses a kind of double sealing construction building window, including outer frame and inner fan, the upper outer frame is installed with inner fan in rotating cooperation, the bottom end outside of inner fan is provided with drain hole, outer frame is provided with first sealing rubber strip, and inner fan is provided with second sealing rubber strip;When inner fan and outer frame mutually abut, the first sealing rubber strip and the second sealing rubber strip will outer frame and inner fan be separated into water flow cavity located outside and air-tight cavity located inside;Second sealing rubber strip is provided with air pressure stabilizing mechanism in, for balancing the air pressure between water flow cavity and air-tight cavity, when it rains outside and inner fan opens, the drain hole on inner fan drains rainwater, when inner fan is closed, when the air pressure is higher outside, the air pressure between water flow cavity and air-tight cavity is adjusted by air pressure stabilizing mechanism, rainwater outside does not enter indoor, when the air pressure is lower outside, rainwater outside does not flow into indoor, improve the sealing performance of inner fan.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building doors and windows, in particular to a building window with double sealing structure. BACKGROUND

[0002] As known, a window in architecture refers to a hole built in a wall or roof to allow light or air to enter the room. A modern window is composed of three parts: a window frame, a glass, and a movable component (hinge, handle, pulley, etc.). The window frame supports the main structure of the window body, the transparent part is attached to the window frame, and the movable component is mainly made of metal, which may be wrapped with plastic or other thermal insulation materials where the hand touches.

[0003] For example, the invention with the publication number CN110118051A and the publication date of August 13, 2019, and the name "Multi-seal whole circuit drainage sliding window" discloses a multi-seal whole circuit drainage sliding window with simple structure, better drainage effect and better fit, which comprises a side frame, a lower frame and a window. The lower frame comprises an inner side plate, a bottom plate, a top plate, a connecting plate, a vertical plate and a front baffle. The top plate and the bottom plate are connected to the upper and lower sides of the same side end of the inner side plate, respectively. The other end of the top plate and the bottom plate is connected to the upper and lower ends of the vertical plate. The connecting plate is connected between the bottom plate and the front baffle. The top end side of the top plate and the front baffle is fixed with a guide rail. The top plate, the guide rail of the front baffle and the vertical plate are provided with through holes. The top plate and the bottom plate are further fixed with a partition. The bottom end of the window is slidably connected with the guide rail. The side end of the window is arranged to be in close contact with the side frame. The side end of the window is provided with a notch. The side frame is fixed with a cutting strip or a cutting block near the window. The cutting strip or the cutting block is arranged to be in close contact with the notch of the side frame.

[0004] When it rains, the rainwater can be discharged from the through holes on the top plate, the guide rail of the front baffle and the vertical plate, avoiding water accumulation. The close contact of the cutting strip or the cutting block increases the sealing of the outer frame and the inner fan. However, in the case of heavy rain outside, the pressure difference between the indoor and outdoor will drive the rainwater to seep into the room from the through hole. SUMMARY

[0005] The purpose of the present application is to provide a building window with double sealing structure to solve the above-mentioned problems in the prior art.

[0006] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0007] A building window with double sealing structure, comprising an outer frame and an inner sash, the inner sash is rotatably installed on the outer frame, a drainage hole is arranged on the outer side of the bottom end of the inner sash, a first sealing strip is arranged on the outer frame, and a second sealing strip is arranged on the inner sash; when the inner sash and the outer frame abut against each other, the first sealing strip and the second sealing strip separate the outer frame and the inner sash into a water flow cavity on the outer side and an air-tight cavity on the inner side;

[0008] A gas pressure stabilizing mechanism is arranged in the second sealing strip, which is used to balance the gas pressure between the water flow cavity and the air-tight cavity.

[0009] The gas pressure stabilizing mechanism comprises an adjusting pipe, the adjusting pipe is arranged in the center of the second sealing strip, one end of the adjusting pipe is connected with the water flow cavity through a first gas pipe, and the other end of the adjusting pipe is connected with the air-tight cavity through a second gas pipe.

[0010] The top of the inner sash is connected with the top of the outer frame through a hinge.

[0011] The outer frame is provided with a first heat insulation strip, the first sealing strip is arranged on the first heat insulation strip, the inner sash is provided with a second heat insulation strip, and the second sealing strip is arranged on the second heat insulation strip.

[0012] The outer frame is provided with a water inlet hole at a position corresponding to the drainage hole.

[0013] The outer frame is provided with a water outlet hole at the bottom end of the water flow cavity, and a baffle is arranged outside the water outlet hole.

[0014] The inner sash is provided with a third sealing strip, and the third sealing strip is used to fix and install glass on the inner sash.

[0015] The opening end of the inner sash is connected with the outer frame through a sliding support, and the sliding support is used to support the opening of the inner sash.

[0016] The inner sash is provided with a locking mechanism, and the locking mechanism is used to lock the inner sash on the outer frame.

[0017] An air inlet conducting branch is arranged on each of the first gas pipe and the second gas pipe, and the air inlet conducting branch is used for gas conduction in the first gas pipe and the second gas pipe.

[0018] The beneficial effects of this invention are as follows: when it rains outside, the inner fan is opened, and the rainwater on the glass is drained through the drainage holes on the inner fan. When the inner fan is closed, the first sealing strip and the second sealing strip separate the outer frame and the inner fan into a water flow cavity and an airtight cavity. When the outdoor air pressure is high, the air pressure between the water flow cavity and the airtight cavity is adjusted by the air pressure stabilizing mechanism, so that outdoor rainwater will not enter the room. When the outdoor air pressure is low, outdoor rainwater will not flow into the room, thus improving the sealing performance of the inner fan. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] For ease of observation and description, the thickness dimensions of the outer frame, inner fan, and glass in various embodiments of the present invention have been exaggerated. Compared to the internal space of the outer frame, the dimensions of many components are relatively large. For ease of observation, the installation position of the outer frame has been omitted in various embodiments of the present invention.

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 For the present invention Figure 1 Top view;

[0023] Figure 3 For the present invention Figure 1 The front view;

[0024] Figure 4 For the present invention Figure 2 Schematic diagram of the cross-sectional structure at point AA;

[0025] Figure 5 For the present invention Figure 4 A magnified structural diagram at point L;

[0026] Figure 6 For the present invention Figure 3 Schematic diagram of the cross-sectional structure at BB;

[0027] Figure 7 For the present invention Figure 6 A magnified structural diagram at point M;

[0028] Figure 8 For the present invention Figure 3 A schematic diagram of the cross-sectional structure at point CC;

[0029] Figure 9 For the present inventionFigure 8 A magnified structural diagram at point N;

[0030] Figure 10 This is a cross-sectional three-dimensional structural diagram of the outer frame and inner fan of the present invention.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Outer frame; 11. First sealing strip; 12. First heat insulation strip; 13. Water inlet; 14. Water outlet; 15. Baffle; 2. Inner fan; 21. Drain hole; 22. Second sealing strip; 23. Second heat insulation strip; 24. Third sealing strip; 3. Water flow cavity; 4. Airtight cavity; 5. Air pressure stabilizing mechanism; 51. Adjusting pipe; 52. First air pipe; 53. Second air pipe; 7. Locking mechanism; 71. Z-shaped crank; 72. First elliptical plate; 73. Positioning hole; 74. Hollow groove; 75. First elliptical groove; 76. Insert rod; 77. Sliding round rod; 78. Second elliptical plate; 79. Second elliptical groove; 710. Syringe fitting; 711. Second piston; 712. Push rod; 713. Auxiliary round rod; 714. Groove; 715. Lifting rod; 716. Return spring; 717. Friction plate; 718. Air inlet; 8. Air inlet conduction chain; 81. First retaining ring; 82. Second retaining ring; 83. First sealing ring; 84. Auxiliary spring; 85. Auxiliary round plate; 86. Auxiliary rod; 87. Second sealing ring; 88. Conical groove. Detailed Implementation

[0033] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0034] In the various embodiments of the present invention, for the convenience of description and understanding rather than for the limitation of claims, the directional terms such as vertical, horizontal, front, back, long, wide, outside, inside, etc. in this embodiment are understood according to common sense in daily life. For example, when a window is set vertically, its long side is arranged vertically and its wide side is arranged horizontally. The side of the window facing the inside of the building is called inside, and the side facing the outside of the building is called outside. When opening the window, pushing it from the inside side to the outside side is forward, and vice versa is back.

[0035] like Figures 1 to 10As shown in the figure, an embodiment of the present invention provides a building window with a double sealing structure, including an outer frame 1 and an inner sash 2. The inner sash 2 is rotatably mounted on the outer frame 1. A drainage hole 21 is provided on the outer side of the bottom end of the inner sash 2. A first sealing strip 11 is provided on the outer frame 1, and a second sealing strip 22 is provided on the inner sash 2. When the inner sash 2 and the outer frame 1 abut against each other (that is, when the window is closed), the first sealing strip 11 and the second sealing strip 22 separate the outer frame 1 and the inner sash 2 into a water flow cavity 3 located on the outside and an airtight cavity 4 located on the inside. An air pressure stabilizing mechanism 5 is provided in the second sealing strip 22, which is used to balance the air pressure between the water flow cavity 3 and the airtight cavity 4.

[0036] Specifically, workers use tools to install the outer frame 1 onto the wall using existing technology. A third sealing strip 24 is installed on the inner sash 2, and this third sealing strip 24 is used to seal the connection area between the inner sash 2 and the glass. When the inner sash 2 is aligned with the outer frame 1 (i.e., the inner sash 2 is closed), the inner sash 2 and the outer frame 1 at least partially overlap and align. The first sealing strip 11 and the second sealing strip 22 form a water flow cavity 3 between the outer frame 1 and the inner sash 2. The two sealing strips 22 form an airtight cavity 4 between the outer frame 1 and the inner fan 2 outdoors. That is, the outer frame 1 and the inner fan 2 are separated into two cavities by the contact of the first sealing strip 11 and the second sealing strip 22. After the inner fan 2 is closed, the air pressure inside the water flow cavity 3 is the same as the outdoor air pressure due to the connection (both the water inlet 13 and the water outlet 14 are connected to the water flow cavity 3 and the outdoors). In rainy weather, the inner fan 2 is in the closed state due to the mutual contact of the first sealing strip 11 and the second sealing strip 22. Next, a water flow cavity 3 is formed on the outdoor side between the outer frame 1 and the inner sash 2, and an airtight cavity 4 is formed on the indoor side between the outer frame 1 and the inner sash 2. At this time, the air pressure in the water flow cavity 3 is always the same as the outdoor air pressure, while the air pressure in the airtight cavity 4 is the same as the outdoor air pressure when the inner sash 2 is closed. When it is just closed, the air pressure in the airtight cavity 4 is the same as the air pressure in the water flow cavity 3. Rainwater will not flow into the airtight cavity 4 after passing through the water flow cavity 3. When the outdoor air pressure rises (that is, the air pressure in the water flow cavity 3 is higher than the outdoor air pressure), the water flow cavity 4 will not flow into the airtight cavity 4. When the air pressure inside the airtight cavity 4 is high, the air pressure stabilizing mechanism 5 buffers the air pressure inside the water flow cavity 3, preventing rainwater from flowing into the airtight cavity 4 due to the pressure difference. When the outdoor air pressure decreases (that is, when the air pressure inside the airtight cavity 4 is higher than the air pressure inside the water flow cavity 3), rainwater in the water flow cavity 3 will be even less likely to flow into the airtight cavity 4, effectively ensuring that rainwater does not leak from the outside into the inside, thus improving the sealing between the inner fan 2 and the outer frame 1.

[0037] Furthermore, the air pressure stabilizing mechanism 5 includes an adjusting pipe 51. The adjusting pipe 51 is centrally located at the center of the second sealing strip 22. One end of the adjusting pipe 51 is connected to the water flow cavity 3 via a first air pipe 52, and the other end of the adjusting pipe 51 is connected to the airtight cavity 4 via a second air pipe 53. Specifically, the water flow cavity 3 and the airtight cavity 4 are connected via the first air pipe 52, the adjusting pipe 51, and the second air pipe 53, so that the air pressure in the water flow cavity 3 and the air pressure in the airtight cavity 4 can maintain a relative balance, preventing rainwater in the water flow cavity 3 from seeping into the airtight cavity 4.

[0038] The top of the inner fan 2 is connected to the top of the outer frame 1 by a hinge. Specifically, the inner fan 2 can be opened and closed with the hinge (not shown in the figure) as the center.

[0039] Furthermore, a first heat insulation strip 12 is provided on the outer frame 1, and a first sealing strip 11 is provided on the first heat insulation strip 12. A second heat insulation strip 23 is provided on the inner fan 2, and a second sealing strip 22 is provided on the second heat insulation strip 23. Specifically, both the first heat insulation strip 12 and the second heat insulation strip 23 are made of rubber, and both have the same coefficient of thermal expansion (the coefficient of thermal expansion refers to the amount of change in length of a one-meter-long solid material when the temperature rises by one degree Celsius). The first heat insulation strip 12 and the second heat insulation strip 23 can further seal and insulate the inner fan 2 and the outer frame 1. When the outdoor temperature is high and the temperature of the glass is relatively high, it will not affect the first sealing strip 11 and the second sealing strip 22, thus improving the service life of the first sealing strip 11 and the second sealing strip 22. This is existing technology and will not be elaborated further.

[0040] Furthermore, a water inlet 13 is provided on the outer frame 1 at a position corresponding to the drainage hole 21. Specifically, due to the presence of the water inlet 13, the water flow cavity 3 is connected to the outside, so that the air pressure in the water flow cavity 3 is always consistent with (or relatively consistent with) the air pressure outside. When the air pressure outside changes, there is an air pressure difference between the water flow cavity 3 and the airtight cavity 4. Due to the presence of the air pressure stabilizing mechanism 5, the air pressure between the water flow cavity 3 and the airtight cavity 4 is in a relatively balanced state, so that the air pressure in the water flow cavity 3 and the airtight cavity 4 tends to be stable. When the inner fan 2 is closed, a small amount of rainwater may flow into the water flow cavity 3 through the water inlet 13 from the drainage hole 21. The rainwater is discharged from the outer frame 1 into the water flow cavity 3 through the water inlet 13, which has a certain guiding effect on the rainwater.

[0041] Furthermore, a water outlet 14 is provided at the bottom of the water flow cavity 3 on the outer frame 1, and a baffle 15 is provided on the outside of the water outlet 14. Specifically, due to the presence of the water outlet 14, the water flow cavity 3 is connected to the outside, so that the air pressure in the water flow cavity 3 is always consistent with (or relatively consistent with) the air pressure outside. When the air pressure outside changes, there is an air pressure difference between the water flow cavity 3 and the airtight cavity 4. Due to the presence of the air pressure stabilizing mechanism 5, the air pressure between the water flow cavity 3 and the airtight cavity 4 is in a relatively balanced state. When rainwater flows into the water flow cavity 3, it is discharged into the water flow cavity 3 in time through the water outlet 14. The baffle 15 can guide the discharge of rainwater through the water outlet 14, so that rainwater will not leak into the airtight cavity 4. Under the combined action of the water outlet 14 and the air pressure stabilizing mechanism 5, the sealing between the inner fan 2 and the outer frame 1 is greatly improved.

[0042] Preferably, the inner fan 2 is provided with a third sealing strip 24, which is used to fix the glass on the inner fan 2. Specifically, the third sealing strip 24 is made of rubber material, which is used to fix the glass on the inner fan 2 to improve the stability and sealing of the glass installation.

[0043] Furthermore, the open end of the inner fan 2 and the outer frame 1 are connected by a sliding support. The sliding support is used to support the opening of the inner fan 2. Specifically, when the inner fan 2 needs to be opened, the inner fan 2 pulls the sliding support (not shown in the figure) to extend and retract. When the inner fan 2 is opened to a suitable angle, the sliding support slides and stretches to a suitable position to support the inner fan 2, so that the inner fan 2 can be opened stably. When the inner fan 2 needs to be closed, the inner fan 2 is pushed to rotate outward by a certain angle and then pulled back, so that the sliding support slides to the longest distance and then retracts, so that the inner fan 2 can be closed. The sliding support is common knowledge in the field and will not be described in detail.

[0044] Furthermore, the inner fan 2 is provided with a locking mechanism 7, which is used to lock the inner fan 2 onto the outer frame 1. The locking mechanism 7 includes a Z-shaped crank handle 71 and a first elliptical plate 72. A positioning hole 73 is opened at one end of the bottom of the outer frame 1 on its inner side (facing the interior). A hollow groove 74 is opened in the middle of the bottom of the inner fan 2. The Z-shaped crank handle 71 is installed on the two side walls of the hollow groove 74 in a rotatable manner. The part of the Z-shaped crank handle 71 located in the hollow groove 74 is equipped with the first elliptical plate 72. A first elliptical groove 75 is opened on the side wall of the first elliptical plate 72 near the inner side (facing the interior) of the inner fan 2. A plug rod 76 is installed at the bottom of the hollow groove 74 in a sliding manner, and the plug rod 76 passes through the bottom of the hollow groove 74 and is connected to the inner side of the inner fan 2. The positioning holes 73 are used in conjunction with each other. A sliding round rod 77 is provided on the insertion rod 76. The sliding round rod 77 is installed in the first elliptical groove 75 in a sliding fit. A second elliptical plate 78 is installed at one end of the Z-shaped crank handle 71 located inside the airtight cavity 4. A second elliptical groove 79 is opened on the second elliptical plate 78. Two syringe tubes 710 are symmetrically arranged on one inner wall of the inner fan 2 located inside the airtight cavity 4, about the second elliptical plate 78. A second piston 711 is installed in each of the two syringe tubes 710 in a sliding fit. A push rod 712 is installed on the outer wall of the two second pistons 711 on the side closest to each other. An auxiliary round rod 713 is installed on each of the two push rods 712. The two auxiliary round rods 713 are slidably fitted... The two syringe tubes 710 are installed on both sides of the second elliptical groove 79 respectively. An air inlet 718 is opened on the inner wall of the two syringe tubes 710 that are close to each other and on the inner fan 2. Specifically, (1) when the inner fan 2 needs to be closed, it needs to be stably positioned on the outer frame 1 to ensure the sealing between the inner fan 2 and the outer frame 1. After the inner fan 2 is closed, the Z-shaped crank 71 is rotated clockwise to rotate 90 degrees (the initial position of the Z-shaped crank 71 is recorded as 0 degrees or 360 degrees. The initial position of the Z-shaped crank 71 is that the crank end (that is, the end held by the hand) is at the bottom. The direction of the major axis of the first elliptical plate 72 is parallel to the bottom of the outer frame 1. The direction of the major axis of the second elliptical plate 78 is perpendicular to the bottom of the outer frame 1. The insertion rod 76 is located in the positioning hole 73. On the outside (that is, by rotating the Z-shaped handle 71 clockwise by 90 degrees), the Z-shaped handle 71 drives the first elliptical plate 72 to rotate by 90 degrees. During the rotation of the first elliptical plate 72 by 90 degrees, the sliding rod 77 slides along the trajectory of the first elliptical groove 75 (that is, the sliding rod 77 slides from the focal point of the minor axis of the first elliptical groove 75 to the focal point of the major axis of the first elliptical groove 75). The first elliptical plate 72 and the first elliptical groove 75 drive the insertion rod 76 to slide towards the bottom end of the inner fan 2 through the sliding rod 77, so that the insertion rod 76 is inserted into the positioning hole 73, and the inner fan 2 is stably fixed on the outer frame 1. At the same time as the Z-shaped handle 71 rotates by 90 degrees, the Z-shaped handle 71 drives the second elliptical plate 78 to rotate by 90 degrees. During the rotation of the second elliptical plate 78 by 90 degrees...The auxiliary rod 713 slides along the trajectory of the second elliptical groove 79 (that is, the auxiliary rod 713 slides from the focal point of the minor axis of the first elliptical groove 75 to the focal point of the major axis of the first elliptical groove 75), causing the auxiliary rod 713 to drive the push rod 712 to slide towards one end away from each other (that is, towards the inside of the syringe tube 710). The push rod 712 drives the second piston 711 to slide towards one end away from each other (that is, towards the inside of the syringe tube 710), causing the second piston 711 to deliver the gas inside the syringe tube 710 into the airtight cavity 4. Due to the presence of the air inlet 718, the air pressure inside the syringe tube 710 is always the same as the air pressure in the room. After one end (i.e., the second piston 711 slides into the syringe tube 710) slides, the syringe tube 710 will not be in a vacuum state, and the second piston 711 will not rebound. This causes the air pressure in the airtight cavity 4 to increase (because when the inner fan 2 is closed, the air pressure in the airtight cavity 4 is the same as the outdoor air pressure. Without changing the volume of the airtight cavity 4, the gas inside the syringe tube 710 is transported into the airtight cavity 4, increasing the gas storage in the airtight cavity 4, thus increasing the air pressure in the airtight cavity 4 relative to the previous air pressure). In other words, when the Z-shaped crank 71 is rotated 90 degrees, it can not only stably position the inner fan 2 on the outer frame 1, but also increase the air pressure in the airtight cavity 4, thus increasing the air pressure in the airtight cavity 4. The air pressure is higher than the air pressure in the water flow cavity 3, so that rainwater will not leak into the airtight cavity 4; (2) When it is necessary to open the inner fan 2, it is necessary to release the positioning of the inner fan 2 on the outer frame 1. At this time, there are two options: continue to rotate the Z-shaped handle 71 clockwise to rotate it 90 degrees (continue to rotate the Z-shaped handle 71 clockwise 90 degrees when it was previously closed) or rotate the Z-shaped handle 71 counterclockwise to rotate it 90 degrees. The Z-shaped handle 71 drives the first elliptical plate 72 to rotate 90 degrees. During the rotation of the first elliptical plate 72 by 90 degrees, the sliding rod 77 slides along the trajectory of the first elliptical groove 75 (that is, the sliding rod 77 slides from the major axis focus position of the first elliptical groove 75 to the minor axis focus position of the first elliptical groove 75). Elliptical plate 72 and first elliptical groove 75 are connected by sliding rod 77, which drives insertion rod 76 to slide towards the top of inner fan 2. This causes insertion rod 76 to slide out of positioning hole 73, so that outer frame 1 no longer positions inner fan 2. At this time, inner fan 2 is opened. As Z-shaped crank 71 rotates 90 degrees, it drives second elliptical plate 78 to rotate 90 degrees. During the rotation of second elliptical plate 78, auxiliary rod 713 slides along the trajectory of second elliptical groove 79 (that is, auxiliary rod 713 slides from the major axis focus position of first elliptical groove 75 to the minor axis focus position of first elliptical groove 75). This causes auxiliary rod 713 to drive push rod 712 to slide towards one end (that is, push rod 712 towards the outside of syringe tube 710).The push rod 712 drives the second piston 711 to slide towards one end (that is, towards the outside of the syringe tube 710). At this time, the second piston 711 draws the gas in the airtight cavity 4 into the syringe tube 710. However, because the inner fan 2 is open for a short time, the air pressure stabilizing mechanism 5 has not yet started to balance the air pressure of the airtight cavity 4 and the water flow cavity 3. The inner fan 2 has already opened, and the first sealing strip 11 and the second sealing strip 22 separate from each other, so that the airtight cavity 4 does not exist. When the inner fan 2 is open, the air pressure difference between the airtight cavity 4 and the water flow cavity 3 is reduced by the action of the air pressure stabilizing mechanism 5. The system is in a balanced state. When the inner fan 2 is closed, if it is necessary to adjust the air pressure in the airtight cavity 4, the Z-shaped crank 71 can be rotated (the rotation angle of the Z-shaped crank 71 is within 90 degrees, meaning the Z-shaped crank 71 will not rotate to the separation or positioning position of the inner fan 2 and the outer frame 1). This allows the gas in the syringe tube 710 to be delivered to the airtight cavity 4, increasing the air pressure in the airtight cavity 4, or drawing the gas in the airtight cavity 4 into the syringe tube 710, decreasing the air pressure in the airtight cavity 4. This allows for adjustment of the air pressure in the airtight cavity 4 to adapt to changes in air pressure within the water flow cavity 3.

[0045] Preferably, a groove 714 is provided on each of the two side walls of the hollow groove 74 at the top and bottom of the Z-shaped handle 71. A lifting rod 715 is installed in each of the four grooves 714. Each of the four grooves 714 and the four lifting rods 715 is connected by a return spring 716. A friction plate 717 is provided on the contact surface between the four lifting rods 715 and the Z-shaped handle 71. Specifically, when the Z-shaped handle 71 rotates 90 degrees or rotates to other angles, the lifting rods 715 and the friction plates 717 are pressed against the surface of the Z-shaped handle 71 due to the pressing action of the return spring 716. This prevents the Z-shaped handle 71 from rotating at any angle, providing a stable positioning function for the rotation and positioning of the Z-shaped handle 71.

[0046] In another embodiment of the present invention, an air intake conduction branch 8 is provided on both the first trachea 52 and the second trachea 53. The air intake conduction branch 8 is used for gas conduction within the first trachea 52 and the second trachea 53. The air intake conduction branch 8 includes a first retaining ring 81 and a second retaining ring 82. A first retaining ring 81 is installed at the air intake end of the first trachea 52 and at the connection end of the second trachea 53 with the regulating pipe 51. A second retaining ring 82 is installed at the connection end of the first trachea 52 with the regulating pipe 51 and at the air intake end of the second trachea 53. The two second retaining rings 82 are close to the first retaining ring 81. Each sidewall has a first sealing ring 83 installed on it. Each of the two first retaining rings 81 abuts against an auxiliary spring 84. Each of the two auxiliary springs 84 abuts against an auxiliary circular plate 85. The auxiliary circular plates 85 are slidably installed inside the first air tube 52 (or the second air tube 53). Each of the two auxiliary circular plates 85 has an auxiliary rod 86, which is slidably installed on the second retaining ring 82. A second sealing ring 87 is located on the outer wall of the auxiliary circular plate 85 near the auxiliary rod 86. The first sealing ring 83 has an annular concave surface along its circumferential direction. The second sealing ring 87 has an annular protrusion along its circumferential direction, and the annular protrusion and the annular concave surface are interlocked. Specifically, since the first air pipe 52, the regulating pipe 51 and the second air pipe 53 connect the water flow cavity 3 and the airtight cavity 4, when the inner fan 2 is closed: (1) when the air pressure in the water flow cavity 3 is higher than the air pressure in the airtight cavity 4, since the auxiliary circular plate 85 and the second sealing ring 87 abut against the first sealing ring 83 on the second stop ring 82, the first air pipe 52 and the second air pipe 53 are in a sealed state, and the annular concave surface on the first sealing ring 83 and the annular surface on the second sealing ring 87 are in a sealed state. The protrusions interlock, so that the first sealing ring 83 and the second sealing ring 87 are not just abutting with the auxiliary spring 84. Through the interlocking of the annular concave surface and the annular protrusion, the sealing effect between the first sealing ring 83 and the second sealing ring 87 is better. Even if the air pressure in the water flow cavity 3 is higher than the air pressure in the airtight cavity 4, the sealing effect of the first sealing ring 83, the second sealing ring 87, the second retaining ring 82 and the auxiliary circular plate 85 on the first air pipe 52 and the second air pipe 53 will prevent rainwater in the water flow cavity 3 from leaking into the airtight cavity 4, thus improving the sealing between the inner fan 2 and the outer frame 1.(2) When the air pressure in the airtight cavity 4 is higher than the air pressure in the water flow cavity 3, the auxiliary rod 86 and the auxiliary circular plate 85 slide towards the side closer to the first retaining ring 81 due to the presence of air pressure. Under the extension and retraction of the auxiliary spring 84, the auxiliary circular plate 85 slides to a certain position in the first air pipe 52 (or the second air pipe 53) and then stops sliding. At this time, the auxiliary spring 84 is in a compressed state, so that the air pressure in the airtight cavity 4 is adjusted through the regulating pipe 51, the first air pipe 52 and the second air pipe 53 and the water flow cavity. The air pressure within cavity 3 is balanced, ensuring a relative equilibrium between the air pressure in the water flow cavity 3 and the airtight cavity 4. The extension and retraction of the auxiliary spring 84 also provides a buffering effect on the air pressure within the airtight cavity 4, maintaining a relative balance between the air pressure in the airtight cavity 4 and the water flow cavity 3, thus improving the seal between the inner fan 2 and the outer frame 1. When the inner fan 2 is opened, the auxiliary rod 86 and the auxiliary circular plate 85 slide back to their initial positions under the rebound action of the auxiliary spring 84, facilitating subsequent use.

[0047] Preferably, the auxiliary rod 86 in the first air pipe 52 near the end of the adjusting pipe 51 and the auxiliary rod 86 in the second air pipe 53 near the end of the airtight cavity are each provided with a conical groove 88. Specifically, when the air pressure in the airtight cavity 4 is higher than the air pressure in the water flow cavity 3, the conical groove 88 on the auxiliary rod 86 increases its force-bearing area, so that the auxiliary rod 86 can better drive the auxiliary circular plate 85 to squeeze the auxiliary spring 84, thereby improving the working stability of the auxiliary rod 86.

[0048] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A double-sealing-structure building window, comprising an outer frame and an inner sash, the inner sash being rotatably mounted on the outer frame, a drain hole being arranged on the outer side of the bottom end of the inner sash, a first sealing strip being arranged on the outer frame, and a second sealing strip being arranged on the inner sash; when the inner sash and the outer frame abut against each other, the first sealing strip and the second sealing strip separate the outer frame and the inner sash into a water flow cavity on the outer side and an air-tight cavity on the inner side; characterized in that: an air pressure stabilizing mechanism is arranged in the second sealing strip, which is used to balance the air pressure between the water flow cavity and the air-tight cavity; the air pressure stabilizing mechanism comprises an adjusting pipe, the second sealing strip is centrally provided with the adjusting pipe, one end of the adjusting pipe is connected with the water flow cavity through a first air pipe, and the other end of the adjusting pipe is connected with the air-tight cavity through a second air pipe; an air inlet conducting branch is arranged on each of the first air pipe and the second air pipe, and the air inlet conducting branch is used for conducting the gas in the first air pipe and the second air pipe. The top of the inner sash is connected with the top of the outer frame through a hinge. The outer frame is provided with a first heat insulation strip, the first sealing strip is arranged on the first heat insulation strip, the inner sash is provided with a second heat insulation strip, and the second sealing strip is arranged on the second heat insulation strip. The outer frame is provided with a water inlet hole corresponding to the drain hole.

2. A dual seal construction architectural window according to claim 1, wherein, The outer frame is provided with a water outlet hole at the bottom end of the water flow cavity, and a baffle is arranged on the outer side of the water outlet hole.

3. A dual seal construction architectural window according to claim 1, wherein, The inner sash is provided with a third sealing strip, which is used to fixedly mount the glass on the inner sash.

4. A dual seal construction architectural window according to claim 1, wherein, The opening end of the inner sash is connected with the outer frame through a sliding support, and the sliding support is used to support the opening of the inner sash.

5. A dual seal construction architectural window according to claim 1, wherein, The inner sash is provided with a locking mechanism, which is used to lock the inner sash on the outer frame.

6. A dual seal construction architectural window according to claim 1, wherein, ​ 7. A dual seal construction architectural window according to claim 1 wherein, ​ 8. A dual seal construction architectural window according to claim 1 wherein, ​

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