Self-cleaning unit type photovoltaic curtain wall

Abstract

The utility model relates to a self-cleaning unit type photovoltaic curtain wall which comprises a curtain wall frame and a photovoltaic panel arranged on the curtain wall frame, and a moving power assembly is used for driving a cleaning assembly to move to clean the photovoltaic panel. The water collecting tank is connected with a drain pipe for draining sewage; a shutter assembly is arranged at the top opening of the water collecting tank, the triggering part drives the shutter assembly to close the top opening of the water collecting tank when abutting against the shutter assembly, and the shutter assembly is in a normal state to open the top opening of the water collecting tank when the triggering part is separated from the shutter assembly; the water collecting tank is used for collecting water for cleaning the photovoltaic panel, and the water is uniformly discharged outwards in order through the water discharging pipe, so that new pollution caused by the fact that sewage flows to the photovoltaic curtain wall below in an uncontrolled mode is avoided; the shutter assembly is arranged at the opening of the water collecting tank, and when the photovoltaic panel is not cleaned at ordinary times, the shutter assembly closes the top opening of the water collecting tank to prevent external flying dust and the like from entering the water collecting tank, so that the external dust is prevented from blocking the drainage channel.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic building integration, and in particular to a self-cleaning unitized photovoltaic curtain wall. Background Art

[0002] As a clean and endless energy source, the utilization technology of solar energy has been rapidly developed. Among them, building integrated photovoltaic (BIPV) technology is one of the important ways to convert solar energy into electrical energy without occupying additional land.

[0003] Photovoltaic curtain wall is a type of photovoltaic building integration (BIPV), which is a photovoltaic building material that can become part of a building. Photovoltaic curtain wall has the ability to absorb sunlight to generate electricity. Urban air pollution and dust will be deposited on the surface of photovoltaic panels, reducing the power generation efficiency of photovoltaic curtain wall. Therefore, the cleaning frequency and cleanliness requirements of photovoltaic curtain wall are much greater than those of conventional glass curtain wall. At present, the most common way to clean glass curtain wall is manual cleaning, and manual high-altitude cleaning operations are very dangerous.

[0004] Although there are some self-cleaning technologies in the existing technology, such as super-hydrophobic surfaces and photocatalytic coatings, these technologies often have problems such as poor durability, high cost, and difficult maintenance, and have not been well integrated with building-integrated photovoltaic systems.

[0005] Although there are technologies that use machinery to replace manual cleaning, which can reduce the danger of manual high-altitude operations to a certain extent; however, the current solutions do not properly handle the sewage and impurities after dirty cleaning, which can easily lead to sewage flowing into the lower photovoltaic curtain wall. In addition, the sewage discharge channel is easily blocked by external dust if it is opened for a long time, which greatly reduces the cleaning effect and affects the power generation effect of the photovoltaic curtain wall. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a self-cleaning unitized photovoltaic curtain wall and a construction method to solve the above problems.

[0007] The utility model provides the following technical solutions:

[0008] A self-cleaning unitized photovoltaic curtain wall, comprising a curtain wall frame, a photovoltaic panel arranged on the curtain wall frame, a cleaning component and a moving power component, wherein the moving power component is used to drive the cleaning component to move and clean the photovoltaic panel;

[0009] A water collecting tank is provided at the lower outer side of the photovoltaic panel, and a drainage pipe for draining sewage is connected to the water collecting tank;

[0010] A shutter assembly is provided at the top opening of the water collection tank, and also includes a trigger part driven by a mobile power assembly. When the trigger part abuts against the shutter assembly, the shutter assembly drives the shutter assembly to close the top opening of the water collection tank. When the trigger part is separated from the shutter assembly, the shutter assembly is in a normal state to open the top opening of the water collection tank.

[0011] Preferably, the cleaning assembly includes an outer shell and a cleaning water pipe disposed in the outer shell, the cleaning water pipe is evenly provided with nozzles aimed at the photovoltaic panel, and the outer shell is equipped with a scraper bar that abuts against the outer side wall of the photovoltaic panel.

[0012] Preferably, the water inlet end of the cleaning water pipe is connected to an external water tank through a telescopic water pipe.

[0013] Preferably, a fixed trigger strip is provided on the curtain wall frame, and a connecting rod mechanism is provided in the outer shell. Under normal circumstances, the connecting rod mechanism pushes the scraper strip to extend out of the outer shell and abut against the outer wall of the photovoltaic panel; when the mobile power component drives the connecting rod mechanism in the outer shell to abut and cooperate with the fixed trigger strip, the connecting rod mechanism drives the scraper strip to extend into the interior of the outer shell.

[0014] Preferably, the linkage rod in the shutter assembly is reset by a reset spring, and also includes a push rod member slidingly fitted in the curtain wall frame, one end of the push rod member is an inclined end for cooperating with the trigger part, and the other end of the push rod member abuts against the end of the linkage rod.

[0015] Preferably, a filter screen is provided at the top opening of the water collecting tank.

[0016] The utility model has the following beneficial technical effects:

[0017] The water used to clean the photovoltaic panels is collected through the water collection tank and discharged outward in an orderly manner through the drainage pipe to prevent the sewage from flowing uncontrollably to the photovoltaic curtain wall below and causing new pollution;

[0018] By arranging a shutter assembly at the opening of the water collection tank, when the photovoltaic panel is not cleaned normally, the shutter assembly will close the top opening of the water collection tank to prevent external flying dust and the like from entering the water collection tank, thereby preventing external dust from clogging the drainage channel; when the photovoltaic panel is cleaned, the shutter assembly will open the top opening of the water collection tank to collect water normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 yes Figure 1 AA direction cross-sectional view;

[0021] Figure 3 yes Figure 1BB direction cross-sectional view;

[0022] Figure 4 This is a schematic diagram of the cooperation between the connecting rod mechanism and the scraper strip in the normal state of the utility model;

[0023] Figure 5 This is a schematic diagram of the utility model when the fixed trigger strip, the connecting rod mechanism and the scraper strip are triggered;

[0024] Figure 6 It is a schematic diagram of the shutter assembly of the utility model when it is in an open state;

[0025] Figure 7 It is a schematic diagram of the shutter assembly of the utility model when it is in a closed state.

[0026] Figure 8 This is a schematic diagram of an application scenario of the utility model photovoltaic curtain wall.

[0027] The reference numerals in the figure are:

[0028] 1. Curtain wall frame; 2. Photovoltaic panel; 3. Mobile power assembly; 31. Trigger unit; 5. Water tank; 51. Telescopic water pipe; 6. Cleaning assembly; 61. Shell; 62. Cleaning water pipe; 63. Nozzle; 64. Scraper; 7. Fixed trigger strip; 71. Connecting rod mechanism; 8. Water collecting tank; 81. Filter; 82. Shutter assembly; 821. Linking rod; 822. Push rod; 823. Reset spring; 9. Drain pipe; 10. Switch. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Example:

[0031] like Figure 1-Figure 3 As shown:

[0032] The curtain wall frame 1 is fixedly installed on the reinforced concrete beam through horizontal bars, vertical bars, etc., and a photovoltaic panel 2 is arranged in the curtain wall frame 1. The gap between the curtain wall frame 1 and the photovoltaic panel 2 is sealed by a sealant, and the photovoltaic panel 2 is relatively vertically arranged.

[0033] A mobile power assembly 3 is installed in the curtain wall frame 1. The mobile power assembly 3 can adopt a chain transmission structure. The top of the water collecting tank 8 is opened and fixed to the curtain wall frame 1, and the water collecting tank 8 is located at the lower part of the photovoltaic panel 2. The water collecting tank 8 is tightly abutted against the outer wall of the photovoltaic panel 2 to facilitate the water attached to the outer wall of the photovoltaic panel 2 to be collected downward into the water collecting tank 8. A filter net 81 is arranged at the top opening of the water collecting tank 8 to prevent large particles from entering the water collecting tank 8.

[0034] A shutter assembly 82 is provided at the top opening of the water collection tank 8 and above the filter screen 81. The shutter assembly 82 is an existing structure and is not described in detail. The top opening of the water collection tank 8 can be opened or closed by operating the shutter assembly 82.

[0035] The cleaning assembly 6 includes a shell 61, a cleaning water pipe 62, a nozzle 63 and a scraper 64. The end of the shell 61 is fixedly connected to the chain in the chain transmission structure. The shell 61 slides linearly relative to the curtain wall frame 1 in the vertical (gravity) direction. The straight-line cleaning water pipe 62 is horizontally arranged inside the shell 61. A number of nozzles 63 are arranged at equal intervals along the length direction of the cleaning water pipe 62 and are connected to the cleaning water pipe 62. One end of the cleaning water pipe 62 is connected to the external water tank 5 through a telescopic water pipe 51 (a hose can be used). A water pump is installed on the telescopic water pipe 51; the hanging bar 64 is horizontally arranged on the shell 61 and abuts against the outer wall of the photovoltaic panel 2. It also includes a position sensor for monitoring the upper and lower limit positions of the shell 61 to avoid over-limit. The nozzle 63 can be located above the scraper 64 or below the scraper 64.

[0036] The scraper strip 64 can be made of rubber and has a certain elastic deformation capability.

[0037] The switch 10 is installed indoors for the convenience of user control. When it is needed, the user starts the switch, and the water pump transports the water in the water tank 5 to the cleaning water pipe 62 through the telescopic water pipe 51, and sprays it out through a number of nozzles 63. The sprayed water flow washes the outer wall of the photovoltaic panel 2; at the same time, the mobile power component 3 is controlled to drive the shell 61 to move up and down. During this process, the scraper bar 64 scrapes off the stains attached to the outer wall of the photovoltaic panel 2; the washing of the nozzle 63 and the scraping of the hanging bar 64 cooperate to achieve the cleaning of the photovoltaic panel 2.

[0038] The water used to flush the photovoltaic panel 2 slides down the outer wall of the photovoltaic panel 2 and flows into the sump 8. The sewage collected in the sump 8 is discharged to the outside through the drain pipe 9. The drain pipe 9 can be directly extended to the drainage channel of the building to avoid affecting another group of photovoltaic panels 2 below.

[0039] like Figure 1 As shown, the mobile power assembly 3 may adopt a chain transmission structure, in which a triggering part 31 is fixedly mounted on the chain, and the triggering part 31 is fixedly arranged relative to the housing 61 .

[0040] like Figure 6 , Figure 7 As shown, a fixed trigger bar 7 is fixedly arranged in the curtain wall frame 1 and above the top opening of the water collecting tank 8; Figure 4 , Figure 5 As shown, a connecting rod mechanism 71 is provided in the housing 61, and the connecting rod mechanism 71 is a two-connecting rod mechanism (including a reset elastic member and a first connecting rod and a second connecting rod hinged to each other, the other end of the first connecting rod is hinged in the housing 61, and the other end of the first connecting rod is hinged to the scraper 64), and the scraper 64 slides horizontally and linearly relative to the housing 61 to achieve approaching or moving away from the outer wall of the photovoltaic panel 2;

[0041] Under normal circumstances Figure 4 As shown, the elastic force of the reset elastic member (not shown in the figure) pushes the scraper 64 to abut against the outer wall of the photovoltaic panel 2, and the scraper 64 can scrape the photovoltaic panel 2 normally; when the mobile power assembly 3 drives the housing 61 to vertically descend to the lower limit position in the non-working position, at this time, Figure 5 As shown, the fixed trigger bar 7 is roughly in contact with the hinge of the first connecting rod and the second connecting rod, thereby pushing the connecting rod mechanism 71 to move and deform, driving the scraper bar 64 away from the photovoltaic panel 2 and retracting into the shell 61, thereby protecting the scraper bar 64 when not in use.

[0042] like Figure 6 As shown, when the triggering part 31 is not in contact with and pressed against the right end of the push rod 822 in the shutter assembly 82, the linkage rod 821 in the shutter assembly 82 is in the right limit position due to the elastic force of the return spring 823, and at this time, the shutter assembly 82 is in the open state; the push rod 822 slides relatively horizontally in the water collecting tank 8, and the wide surface at the left end of the push rod 822 is in contact with the right end of the linkage rod 821. The right end of the push rod 822 is designed to be an inclined surface, and the angle between the inclined surface and the moving direction of the triggering part 31 is an acute angle;

[0043] like Figure 7 As shown, the trigger part 31 is driven by the mobile power component 3 to move to the lower limit position. At this time, the trigger part 31 and the right end inclined surface of the push rod member 822 abut and cooperate with each other, thereby relatively driving the push rod member 822 to move relatively to the left. The push rod member 822 moves to the left and drives the connecting rod 821 to follow the movement and compress the reset spring 823 to generate a reverse elastic force. The connecting rod 821 follows the movement to drive the shutter assembly 82 to be in a closed water collection tank 8 The top opening state.

[0044] When not in operation, the shutter assembly 82 is in a state of closing the top opening of the water collection tank 8 , and at the same time, the scraper strip 64 is in a state of being retracted into the interior of the housing 61 .

[0045] Figure 8 This is a schematic diagram of an application scenario of the photovoltaic curtain wall of this scheme.

[0046] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A self-cleaning unitized photovoltaic curtain wall, comprising a curtain wall frame (1), a photovoltaic panel (2) arranged on the curtain wall frame (1), a cleaning component (6) and a moving power component (3), wherein the moving power component (3) is used to drive the cleaning component (6) to move and clean the photovoltaic panel (2), and is characterized in that: A water collecting tank (8) is provided at the lower outer portion of the photovoltaic panel (2), and a drainage pipe (9) for draining sewage is connected to the water collecting tank (8); A shutter assembly (82) is provided at the top opening of the water collecting tank (8), and also includes a triggering portion (31) driven by a moving power assembly (3); when the triggering portion (31) abuts against the shutter assembly (82), the shutter assembly (82) is driven to close the top opening of the water collecting tank (8); when the triggering portion (31) is separated from the shutter assembly (82), the shutter assembly (82) is in a normal state to open the top opening of the water collecting tank (8).

2. A self-cleaning unitized photovoltaic curtain wall according to claim 1, characterized in that: The cleaning assembly (6) comprises an outer shell (61) and a cleaning water pipe (62) arranged in the outer shell (61); nozzles (63) aimed at the photovoltaic panel (2) are evenly arranged on the cleaning water pipe (62); and a scraper (64) abutting against the outer wall of the photovoltaic panel (2) is installed on the outer shell (61).

3. A self-cleaning unitized photovoltaic curtain wall according to claim 2, characterized in that: The water inlet end of the cleaning water pipe (62) is connected to the external water tank (5) through a telescopic water pipe (51).

4. The self-cleaning unitized photovoltaic curtain wall according to claim 2, characterized in that: The curtain wall frame (1) is provided with a fixed trigger bar (7), and the outer shell (61) is provided with a connecting rod mechanism (71). Under normal conditions, the connecting rod mechanism (71) pushes the scraper bar (64) to extend out of the outer shell (61) and abut against the outer wall of the photovoltaic panel (2); when the mobile power component (3) drives the connecting rod mechanism (71) in the outer shell (61) to abut against the fixed trigger bar (7), the connecting rod mechanism (71) drives the scraper bar (64) to extend into the inner part of the outer shell (61).

5. The self-cleaning unitized photovoltaic curtain wall according to claim 1, characterized in that: The linkage rod (821) in the shutter assembly (82) is driven to reset by a reset spring (823), and further comprises a push rod member (822) slidably engaged in the curtain wall frame (1), one end of the push rod member (822) being an inclined end for engaging with the triggering portion (31), and the other end of the push rod member (822) being abutted against the end of the linkage rod (821).

6. The self-cleaning unitized photovoltaic curtain wall according to claim 1, characterized in that: A filter screen (81) is provided at the top opening of the water collecting tank (8).

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