CN213837241U

CN213837241U - Curtain wall rainwater collecting device

Info

Publication number: CN213837241U
Application number: CN202022301929.1U
Authority: CN
Inventors: 董毅
Original assignee: Guangzhou Hanhua Building Design Co ltd
Current assignee: Guangzhou Hanhua Building Design Co ltd
Priority date: 2020-10-15
Filing date: 2020-10-15
Publication date: 2021-07-30
Anticipated expiration: 2030-10-15

Abstract

The utility model relates to a curtain rainwater collection device, include: the curtain wall is internally provided with an accommodating cavity, a water inlet is formed in the windward surface of the curtain wall and communicated with the accommodating cavity, and the accommodating cavity is used for collecting accumulated water; the drain pipe is installed on a side face, back to the windward side, of the curtain wall, and the drain pipe is communicated with the accommodating cavity. When the rainwater that has the overflow on the curtain surface flows down, the rainwater flows into through the water inlet and holds the intracavity, and the drain pipe will hold the ponding drainage in the intracavity inside the building to collect and store. The curtain wall rainwater collecting device is arranged at the interlayer position of a high-rise building, rainwater is collected layer by layer, the rainwater quantity of the bottom layer of the building is effectively reduced, and the impact of the rainwater on the bottom layer of the building is reduced; on the other hand, compare with traditional rainwater collection recovery system, need not to increase consumer, the rainwater after retrieving supplies water for outdoor or basement through gravity and uses, uses the maintenance cost low, effectively increases economic benefits.

Description

Curtain wall rainwater collecting device

Technical Field

The utility model relates to a building material technical field especially relates to curtain rainwater collection device.

Background

With the vigorous development of the building material industry, more and more high buildings use curtain wall technology, and curtain walls are composed of panels and supporting structure systems, are outer wall enclosures of buildings, do not play a role in bearing, and are light wall bodies with decoration effects commonly used by modern large-scale and high-rise buildings. However, when raining, the vertical windward side collects a great amount of rainwater, the rainwater flows down in contact with the curtain wall, great impact is formed on the first floor or the first rain shed water collecting system, the conditions of overflow, splashing or local water accumulation are often caused by exceeding the design load, little influence is caused on the safety of pedestrians in rainy days, and the instant water accumulation can cause great flooding risks to various spaces and equipment of the basement or the first floor.

SUMMERY OF THE UTILITY MODEL

Based on this, provide a curtain rainwater collection device, can effectively the successive layer collect the outer rainwater of high-rise building, reduce the high-rise building bottom rainfall volume, alleviate the impact of rainwater to the bottom.

A curtain wall rainwater collection device, the curtain wall rainwater collection device includes: the curtain wall is internally provided with an accommodating cavity, a water inlet is formed in the windward surface of the curtain wall and communicated with the accommodating cavity, and the accommodating cavity is used for collecting accumulated water; the drain pipe is arranged on a side face, back to the windward side, of the curtain wall, and the drain pipe is communicated with the accommodating cavity.

In the installation process of the curtain wall rainwater collecting device, firstly, a drain pipe is arranged on one side surface of the curtain wall, which is back to the windward side; the curtain wall is then mounted on a building beam or other fixed structure. Because be equipped with the water inlet on the curtain, when the rainwater that has the overflow on the curtain surface of upper portion flows down, the rainwater flows into through the water inlet and holds the intracavity, and inside the rethread drain pipe will hold the ponding drainage of intracavity to collect and store. The curtain wall rainwater collecting device is arranged at the interlayer position of a high-rise building, rainwater is collected layer by layer, the rainwater quantity of the bottom layer of the high-rise building is effectively reduced, and the impact of the rainwater on the bottom layer of the building is reduced; on the other hand, compare with traditional rainwater collection recovery system, need not to increase consumer and supply water, the rainwater after retrieving supplies water for outdoor or basement through the gravity and uses, uses the maintenance cost low, effectively increases economic benefits.

In one embodiment, the curtain wall rainwater collecting device further comprises a negative pressure pipe, the negative pressure pipe is arranged on the opposite side of the windward side of the curtain wall, and the negative pressure pipe is communicated with the accommodating cavity.

In one embodiment, the curtain wall rainwater collecting device further comprises an air pumping piece, and the air pumping piece is communicated with the accommodating cavity through the negative pressure pipe.

In one embodiment, the number of the negative pressure pipes is two or more, and the two or more negative pressure pipes are respectively communicated with the accommodating cavity.

In one embodiment, the air pumping part is connected with the negative pressure pipe in a sealing mode.

In one embodiment, the opening wall of the water inlet comprises a first side wall and a second side wall which are oppositely arranged, the first side wall and the second side wall are distributed at intervals along the height direction of the curtain wall, the first side wall is farther away from the water discharge pipe relative to the second side wall, and the height position h0 of the curtain wall of the negative pressure pipe is lower than the height position h1 of the first side wall of the curtain wall.

In one embodiment, the negative pressure pipe is located between the first side wall at the height position h1 of the curtain wall and the second side wall at the height position h2 of the curtain wall at the height position h0 of the curtain wall.

In one embodiment, the curtain wall rainwater collecting device further comprises a filter screen, wherein the filter screen is arranged on the windward side of the curtain wall, and the filter screen covers the water inlet.

In one embodiment, the drain pipe comprises a first drain section and a second drain section, the first drain section is communicated with the accommodating cavity, and the second drain section is intersected with the first drain section.

In one embodiment, the accommodating cavities, the water discharging pipes and the water inlets are more than two, the accommodating cavities are arranged at intervals along the height direction of the curtain wall, and each accommodating cavity is correspondingly communicated with at least one water discharging pipe and at least one water inlet.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

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

FIG. 1 is a schematic structural view of a rainwater collecting device for curtain walls according to an embodiment;

fig. 2 is an enlarged view of the structure at circle a in fig. 1.

Description of reference numerals:

100. curtain wall rainwater collection device, 110, curtain wall, 111, first lateral wall, 112, second lateral wall, 120, hold the chamber, 130, water inlet, 140, negative pressure pipe, 150, drain pipe, 151, first drainage section, 152, second drainage section, 160, windward side.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

In one embodiment, referring to fig. 1 and 2, a curtain wall rainwater collecting device 100 includes: curtain wall 110 and drain 150. Be equipped with in the curtain wall 110 and hold chamber 120, be equipped with water inlet 130 on the windward side 160 of curtain wall 110, water inlet 130 with hold the chamber 120 intercommunication, hold the chamber 120 and be used for collecting ponding. The drain pipe 150 is installed on a side of the curtain wall 110 facing away from the windward side 160, and the drain pipe 150 communicates with the accommodating chamber 120.

In the installation process of the curtain wall rainwater collecting device 100, firstly, the drain pipe 150 is installed on one side surface of the curtain wall 110, which is opposite to the windward side 160; the curtain wall 110 is then mounted to a building beam or other fixed structure. Because the curtain wall 110 is provided with the water inlet 130, when the rainwater flowing over the surface of the curtain wall 110 flows down, the rainwater flows into the accommodating cavity 120 through the water inlet 130, and the accumulated water in the accommodating cavity 120 is drained into the building through the drain pipe 150 and then collected and stored. The curtain wall rainwater collecting device 100 is arranged at the position between layers of a high-rise building, rainwater is collected layer by layer, the rainwater quantity of the bottom layer of the high-rise building is effectively reduced, and the impact of the rainwater on the bottom layer of the building is reduced; on the other hand, compare with traditional rainwater collection recovery system, need not to increase consumer and supply water, the rainwater after retrieving supplies water for outdoor or basement through the gravity and uses, uses the maintenance cost low, effectively increases economic benefits.

It should be noted that the windward side 160 of the curtain wall 110 is understood as: the curtain wall 110 faces the outside of the building in the direction of the wind, and rain water strikes the windward side 160 of the curtain wall 110 and floods from top to bottom on the windward side 160.

Alternatively, the shape of the water inlet 130 may be rectangular, square, circular, triangular, polygonal, or other shape.

Specifically, the water inlet 130 is rectangular in shape. The opening dimension of the water inlet 130 in the height direction of the curtain wall 110 is rectangular wide, and the opening dimension of the water inlet 130 perpendicular to the height direction of the curtain wall 110 is rectangular long. The shape of the water inlet 130 is set in such a way, so that the area of the accommodating cavity 120, through which rainwater overflowing from the upper curtain wall 110 flows, can be effectively increased, and the integrity of the appearance of the curtain wall 110 can be effectively maintained, so that the curtain wall 110 is more attractive. The present embodiment provides only one shape of the water inlet 130, but is not limited thereto.

In one embodiment, referring to fig. 2, the curtain wall rainwater collecting device 100 further includes a negative pressure pipe 140, the negative pressure pipe 140 is installed on the opposite side of the windward side 160 of the curtain wall 110, and the negative pressure pipe 140 is communicated with the accommodating cavity 120. The negative pressure pipe 140 can make the inside of the building form negative pressure relative to the outside of the building, so that the air outside the building enters the inside of the building. When rainwater flows over the containing cavity 120, the rainwater can be effectively sucked into the containing cavity 120 from the water inlet 130 by the suction force of the negative pressure pipe 140, and the rainwater collecting effect of the curtain wall rainwater collecting device 100 is effectively improved.

In one embodiment, with continued reference to fig. 2, the curtain wall rainwater collecting device 100 further includes an air pumping member, and the air pumping member is communicated with the accommodating cavity 120 through a negative pressure pipe 140. The air pumping part provides power, negative pressure is formed by pumping air into the building, rainwater flowing down from the upper curtain wall 110 can be effectively sucked into the accommodating cavity 120 from the water inlet 130 in a weak wind or no wind environment, and therefore the rainwater collecting effect of the curtain wall rainwater collecting device 100 is improved.

In particular, the air extraction member is an air extraction pump. The air pump makes the diaphragm do reciprocating motion through the circular motion of the motor, compresses and stretches the air in the accommodating cavity 120 to form negative pressure, and forms pressure difference with the accommodating cavity 120 at the negative pressure pipe 140, so that pressure difference is generated between the accommodating cavity 120 and the external atmospheric pressure of the curtain wall 110, and overflowing rainwater is sucked into the accommodating cavity 120 from the water inlet 130 under the action of the pressure difference.

In one embodiment, please continue to refer to fig. 2, the number of the negative pressure tubes 140 is two or more, and the two or more negative pressure tubes 140 are respectively communicated with the accommodating cavity 120. More than two negative pressure pipes 140 are arranged in this way, so that the air pressure difference between the inside of the accommodating cavity 120 and the outside of the curtain wall 110 is changed more quickly, and the suction effect of the overflowing rainwater is effectively improved.

Further, the suction member communicates with the accommodation chamber 120 through two or more negative pressure pipes 140. The air pumping part provides power, negative pressure is formed by pumping air into the building, rainwater flowing down from the upper curtain wall 110 can be effectively sucked into the accommodating cavity 120 from the water inlet 130 in a weak wind or no wind environment, and therefore the rainwater collecting effect of the curtain wall rainwater collecting device 100 is improved.

Furthermore, the number of the air-extracting pieces is two or more, and the two or more air-extracting pieces are respectively connected with the two or more negative pressure pipes 140 in a one-to-one correspondence manner and are communicated with the accommodating cavity 120 through the two or more negative pressure pipes 140. Therefore, the more than two negative pressure pipes 140 respectively compress and stretch the air in the accommodating cavity 120 to form negative pressure, and pressure difference is formed between the negative pressure pipes 140 and the accommodating cavity 120, so that pressure difference is generated between the accommodating cavity 120 and the external atmospheric pressure of the curtain wall 110, overflowing rainwater is sucked into the accommodating cavity 120 from the water inlet 130 under the action of the pressure difference, the speed of forming the negative pressure is effectively increased, and the sucking efficiency of the overflowing rainwater in the accommodating cavity 120 is improved.

In one embodiment, the suction member is sealingly connected to suction tube 140. Sealing connection like this effectively guarantees the work efficiency of the piece of bleeding for thereby the piece of bleeding makes to hold chamber 120 and the outside atmospheric pressure of curtain 110 and produces the pressure differential through bleeding, inhales the rainwater of overflowing in holding chamber 120 from water inlet 130 under the effect of pressure differential, has guaranteed curtain rainwater collection device 100's result of use.

Alternatively, the sealing connection between the suction member and the suction pipe 140 may be a bolt connection, a threaded connection, an interference fit, a snap connection, an adhesive, a sealing tape seal, or other connection.

In one embodiment, the air pumping part is connected with the negative pressure pipe 140 in an interference fit manner, and the sealing is performed through the sealing glue, so that the connection between the air pumping part and the negative pressure pipe 140 can be effectively fixed, the sealing glue seals the joint, the connector is further fixed, the connection stability of the connector is improved, the suction effect of the overflowing rainwater suction accommodating cavity 120 is ensured, and the use experience of the curtain wall rainwater collection device 100 is effectively improved. The present embodiment provides only one sealing connection way between the suction member and the negative pressure tube 140, but not limited thereto.

In one embodiment, with continuing reference to fig. 2, the opening wall of the water inlet 130 includes a first side wall 111 and a second side wall 112 disposed opposite to each other, the first side wall 111 and the second side wall 112 are spaced apart from each other along the height direction of the curtain wall 110, the first side wall 111 is further away from the water outlet pipe 150 than the second side wall 112, and the height h0 of the negative pressure pipe 140 at the curtain wall 110 is lower than the height h1 of the first side wall at the curtain wall. The relative positions of the water inlet 130 and the negative pressure pipe 140 are set in this way, so that the negative pressure pipe 140 can be better communicated with the external atmospheric pressure of the curtain wall 110 through the water inlet 130, the speed of forming negative pressure is effectively increased, and the suction efficiency of the overflowing rainwater suction accommodating cavity 120 is improved. On the other hand, the height h0 of the negative pressure pipe 140 is lower than the height h1 of the first side wall 111 at the curtain wall 110, so that the accumulated water in the accommodating cavity 120 can be effectively prevented from flowing back into the building or the air pumping part through the negative pressure pipe 140, the air pumping part can normally operate, the service life of the air pumping part is prolonged, and the overall quality of the curtain wall rainwater collecting device 100 is improved.

For the convenience of clearly understanding the height direction of the curtain wall 110 of the present embodiment, taking fig. 1 as an example, the height direction of the curtain wall 110 is S in fig. 1₁The direction indicated by any arrow.

It should be noted that the first sidewall 111 and the second sidewall 112 are spaced apart from each other along the height direction of the curtain wall 110, and the first sidewall 111 is far away from the drain pipe 150 along the height direction of the curtain wall 110, which should be understood as follows: the height position h1 of the first side wall 111 is higher than the height position h2 of the second side wall 112 from top to bottom in the height direction of the curtain wall 110. Based on the height position of the drain pipe, the first side wall 111 is far away from the drain pipe 150 in the height direction of the curtain wall 110, and the second side wall 112 is close to the drain pipe 150 in the height direction of the curtain wall 110.

In one embodiment, with continued reference to fig. 2, the opening wall of the water inlet 130 includes a first side wall 111 and a second side wall 112 disposed opposite to each other, the first side wall 111 and the second side wall 112 are spaced apart from each other along the height direction of the curtain wall 110, and the negative pressure pipe 140 is located between the height h0 of the curtain wall 110 at the first side wall 111 and the height h1 of the curtain wall 110 at the second side wall 112 and the height h2 of the curtain wall 110. The relative positions of the water inlet 130 and the negative pressure pipe 140 are set in such a way, so that the position of the negative pressure pipe 140 corresponds to the water inlet position of the water inlet 130, the negative pressure pipe can be better communicated with the external atmospheric pressure of the curtain wall 110 through the water inlet 130, the speed of forming negative pressure is effectively increased, and the suction efficiency of the overflowing rainwater suction accommodating cavity 120 is increased. On the other hand, the height h0 of the negative pressure pipe 140 is lower than the height h1 of the first side wall 111 at the curtain wall 110, so that the accumulated water in the accommodating cavity 120 can be effectively prevented from flowing back into the building or the air pumping part through the negative pressure pipe 140, the air pumping part can normally operate, the service life of the air pumping part is prolonged, and the overall quality of the curtain wall rainwater collecting device 100 is improved.

In one embodiment, the curtain wall rainwater collecting apparatus 100 further includes a filter screen mounted on the windward side 160 of the curtain wall 110, the filter screen covering the water inlet 130. So, set up the filter screen on water inlet 130, can prevent effectively that great bulky barrier from getting into through water inlet 130 and holding the chamber 120 like fallen leaves, colored ribbon, plastic sheet etc. in, avoid causing the inefficacy of curtain rainwater collection device 100 because of holding the interior drainage that the barrier of chamber 120 blockked drain pipe 150.

Further, the filter screen is of a stainless steel structure. Through the filter screen of installing stainless steel construction at water inlet 130, on the one hand, can prevent effectively that great volume's barrier from getting into through water inlet 130 and holding the chamber 120 like fallen leaves, colored ribbon, plastic sheet etc. and avoid because the interior barrier of chamber 120 blocks the drainage of drain pipe 150, leading to curtain rainwater collection device 100 to become invalid. On the other hand, the filter screen with the stainless steel structure has higher hardness, is not easy to damage and has longer service life. In addition, the filter screen is made of a stainless steel structure, and a certain support can be provided between the first side wall 111 and the second side wall 112, so that deformation of the water inlet 130 of the curtain wall 110 can be effectively avoided, and the appearance integrity and the attractiveness of the curtain wall 110 are effectively improved.

In one embodiment, with continued reference to fig. 2, the drainage pipe 150 includes a first drainage segment 151 and a second drainage segment 152, the first drainage segment 151 is communicated with the accommodating cavity 120, and the second drainage segment 152 intersects the first drainage segment 151. The drain pipe 150 is arranged in this way, so that the drainage direction can be effectively controlled, accumulated water in the accommodating cavity 120 is drained downwards when being drained, and is collected and further processed by a water storage device in a building, water flow splashing during drainage is avoided, and the use quality of the curtain wall rainwater collecting device 100 is improved.

Alternatively, the first drain section 151 and the second drain section 152 may be connected by a screw, a bolt, a snap, an interference fit, an adhesive, an integral molding, or other connection methods. Of course, in other embodiments, a connection structure may be further disposed at one end of the first drain segment 151, and the second drain segment 152 may be mounted on the connection structure, such that the second drain segment 152 is indirectly connected to the first drain segment 151.

Specifically, the first drainage section 151 and the second drainage section 152 are connected by threads, so that the stability of the overall structure of the drainage pipe 150 can be effectively improved; meanwhile, the sealing performance of drainage can be achieved, leakage at the joint is prevented, and the overall use quality of the curtain wall rainwater collecting device 100 is effectively improved. The present embodiment provides only one connection manner of the first drainage segment 151 and the second drainage segment 152, but not limited thereto.

Further, the first drain section 151 is hermetically connected to a sidewall of the receiving chamber 120. Therefore, the water leakage into the wall caused by the drainage pipe 150 discharging the accumulated water in the accommodating cavity 120 is avoided, so that the accumulated water is discharged from the drainage pipe 150 more smoothly, and is collected and further processed by the water storage device in the building.

Alternatively, the sealing connection of the first drain section 151 to the sidewall of the receiving cavity 120 may be an interference fit, a snap connection, an adhesive, a sealing tape seal, or other connection.

Specifically, first drainage section 151 seals through sealed the sealing with holding the chamber 120 lateral wall and sealing, and first drainage section 151 can effectively be fixed to this kind of connected mode. Adopt simultaneously sealed glue sealed to seal up the junction, further fix first drainage section 151 and the hookup location who holds chamber 120, improved first drainage section 151 and the hookup location's that holds chamber 120 connection stability, guaranteed drain pipe 150's drainage effect, effectively improve curtain rainwater collection device 100's use and experience. The present embodiment provides only one sealing connection manner of the first drainage segment 151 and the sidewall of the accommodating cavity 120, but is not limited thereto.

In an embodiment, with reference to fig. 2, the accommodating cavities 120, the water discharging pipes 150 and the water inlets 130 are two or more, the two or more accommodating cavities 120 are arranged at intervals along the height direction of the curtain wall 110, and each accommodating cavity 120 is correspondingly communicated with at least one water discharging pipe 150 and at least one water inlet 130. So set up more than two along curtain 110 direction of height on curtain 110 and hold chamber 120, drain pipe 150 and water inlet 130 for along the rainwater of curtain 110 surface overflow from last by the collection of more than two chamber 120 that holds, effectively improve the efficiency that the rainwater was collected, reduce high-rise building's bottom rainwater volume, reduce the rainwater and to the impact of high-rise building bottom, effectively reduce the risk of flooding in bottom space.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a curtain rainwater collection device which characterized in that, curtain rainwater collection device includes:

the curtain wall is internally provided with an accommodating cavity, a water inlet is formed in the windward surface of the curtain wall and communicated with the accommodating cavity, and the accommodating cavity is used for collecting accumulated water;

the drain pipe is arranged on a side face, back to the windward side, of the curtain wall, and the drain pipe is communicated with the accommodating cavity.

2. The curtain wall rainwater collection device according to claim 1, further comprising a negative pressure pipe installed on a side of the curtain wall opposite to the windward side, the negative pressure pipe being communicated with the accommodation chamber.

3. The curtain wall rainwater collection device of claim 2 further comprising an air extraction member communicating with said receiving cavity through said negative pressure tube.

4. The curtain wall rainwater collection device according to claim 3, wherein the number of the negative pressure pipes is two or more, and the two or more negative pressure pipes are respectively communicated with the containing cavity.

5. The curtain wall rainwater collection device of claim 4 wherein said suction member is sealingly connected to said negative pressure pipe.

6. The curtain wall rainwater collecting device according to claim 2, wherein the opening wall of the water inlet comprises a first side wall and a second side wall which are oppositely arranged, the first side wall and the second side wall are distributed at intervals along the height direction of the curtain wall, the first side wall is farther away from the water outlet pipe relative to the second side wall, and the height position h0 of the curtain wall of the negative pressure pipe is lower than the height position h1 of the first side wall of the curtain wall.

7. The curtain wall rainwater collection apparatus of claim 6 wherein said negative pressure pipe is located between the height of said first side wall at height h1 of said curtain wall and the height of said second side wall at height h2 of said curtain wall at height h0 of said curtain wall.

8. The curtain wall rainwater collecting device according to claim 1, further comprising a filter screen, wherein the filter screen is installed on the windward side of the curtain wall, and the filter screen covers the water inlet.

9. The curtain wall rainwater collection device of claim 1 wherein said drain pipe includes a first drain section in communication with said receiving cavity and a second drain section intersecting said first drain section.

10. The curtain wall rainwater collecting device according to claim 9, wherein the number of the accommodating cavities, the drain pipes and the water inlets is two or more, the two or more accommodating cavities are arranged at intervals along the height direction of the curtain wall, and each accommodating cavity is correspondingly communicated with at least one drain pipe and at least one water inlet.