Water storage sunshade grid system for passive cooling of building exterior walls

Abstract

The present invention discloses a water storage sunshade grille system for passive cooling of building exterior walls. The water storage sunshade grille system is a new building passive energy-saving technology. It uses the combined effects of sunshade and passive evaporation to reduce the temperature of the building exterior wall, thereby reducing the heat transmitted from the exterior wall into the room, which helps to improve the indoor thermal environment, reduce the energy consumption of building air conditioning, and weaken the urban heat island effect. The water storage sunshade grille has the effect of sunshade and heat insulation, resists solar radiation, and reduces the comprehensive temperature of the building exterior wall surface; and the water storage tank can store more water, and can also use non-traditional water resources such as rainwater, gray water or air conditioning condensation water, which can save water resources to the greatest extent. And the water storage sunshade grille can be designed in combination with the architectural shape to enrich the building facade. At the same time, the system can be produced in a modular manner, with low cost. After the initial investment and installation, the later use cost and maintenance cost are very low, and it is also suitable for a variety of buildings.

Description

Technical Field

[0001] The present invention relates to the fields of building passive cooling, building energy conservation, urban heat island, etc., and specifically refers to a water storage sunshade grille system for passive cooling of building exterior walls. Background Art

[0002] With the development of society and the advancement of urbanization, the coverage rate of urban buildings has gradually increased, which makes the underlying surface temperature too high in summer, causing the urban heat island effect, which seriously affects the thermal comfort of residents. Reducing the temperature of the building's outer surface and reducing the energy consumption of building air conditioning in summer can effectively solve the problem of urban heat island effect and reduce building energy consumption.

[0003] Among building envelope structures, the building exterior wall occupies the largest area, and the outdoor comprehensive temperature on its surface has a greater impact on the indoor thermal environment. At present, many scholars have focused on the four directions of wall cooling and energy-saving measures, namely, insulation cooling, reflection cooling, greening cooling, and water curtain wall cooling.

[0004] Thermal insulation and cooling is achieved by laying a certain thickness of thermal insulation material on the wall to control temperature and insulate. However, in windy weather conditions, the thermal insulation layer is very likely to peel off, posing a safety hazard. In addition, thermal insulation and cooling cannot alleviate the urban heat island effect.

[0005] Reflective walls are walls with a layer of paint with a high reflectivity, i.e. the ability to reflect solar radiation, and a high heat emissivity, i.e. the ability to radiate heat, or glass curtain walls to reflect and cool down. However, the use of these high reflectivity exterior walls can easily lead to urban light pollution such as glare and blinding.

[0006] Greening cooling is to plant plants on the exterior walls to achieve a cooling effect through the shading and transpiration effects of the plants. However, its vertical installation is very difficult to construct. In the later stage, the dead grass and fallen leaves need to be cleaned by manpower and are easy to attract mosquitoes.

[0007] Water curtain wall is a water spraying device installed on the wall. The liquid flows on the wall and evaporates to take away the heat of the wall, thus playing a cooling role. However, long-term water spraying measures will reduce the service life of the building's exterior wall structure and cause mildew and other phenomena. In addition, the construction and maintenance costs of green walls and water curtain walls are too high, and they cannot be widely promoted and used in buildings. Summary of the invention

[0008] The present invention provides a water storage sunshade grille system for passive cooling of building exterior walls, which overcomes the shortcomings of the background technology. The technical solution adopted by the present invention to solve its technical problems is:

[0009] The water storage sunshade grid system used for passive cooling of building exterior walls includes:

[0010] A water supply tank and a plurality of water storage sunshade grille units, each grille unit comprises a frame, a plurality of water storage sunshade grilles, a plurality of drainage pipes, a water tank water supply pipe and a water tank liquid level height control device, the frame is installed on the exterior wall of the building, the water storage sunshade grilles are fixedly connected to the frame and arranged at intervals up and down, each water storage sunshade grille is provided with a water storage tank, one end of the water tank water supply pipe faces the water storage tank located at the top, and the other end of the water tank water supply pipe is connected to the water supply tank; the water storage tank is provided with a drain port, one end of each drainage pipe is connected to the drain port of the upper layer, and the other end is connected to the water storage tank of the next layer; the water tank liquid level height control device is installed at the water tank water supply pipe and can open or disconnect the water tank water supply pipe according to the liquid level of the water storage tank located at the bottom.

[0011] In a preferred embodiment: the water tank liquid level control device includes a water tank float valve, which includes a valve body, a control valve core and a float. The valve body is installed on the water tank water supply pipe, the control valve core is installed in the valve body, and the float and the control valve core are connected through a transmission member.

[0012] In a preferred embodiment: it also includes a water tank drain pipe and a drainage pipe, one end of the water tank drain pipe is connected to the bottom of the water supply tank, and the other end is connected to the drainage pipe, and the drainage pipe is connected to the municipal wastewater well.

[0013] In a preferred embodiment: it also includes a water tank inlet pipe and a water tank liquid level control device, one end of the water tank inlet pipe is connected to the water source and the other end faces the water supply tank, and the water tank liquid level control device is installed at the other end of the water tank inlet pipe.

[0014] A preferred embodiment also includes a water tank overflow pipe, the top of which is located in the water supply tank, the bottom of which is connected to the drain pipe, and the height of the top of the water tank overflow pipe is the highest liquid level in the water supply tank.

[0015] In a preferred embodiment: it also includes a floor water tank, a floor water tank water inlet pipe, a floor water tank liquid level control device and a floor water tank outlet pipe, one end of the floor water tank water inlet pipe is connected to the water supply tank, and the other end extends into the floor water tank, one end of the floor water tank outlet pipe is connected to the floor water tank, and the other end is connected to the other end of the sink water supply pipe; the floor water tank liquid level control device is installed at the other end of the floor water tank inlet pipe.

[0016] In a preferred embodiment: it also includes a floor water tank overflow pipe and a floor water tank drain pipe, the top of the floor water tank overflow pipe extends into the floor water tank, the bottom end is connected to the drain pipe, and the height of the top of the floor water tank overflow pipe is the highest liquid level height of the floor water tank; one end of the floor water tank drain pipe is connected to the bottom end of the floor water tank, and the other end is connected to the drain pipe or the floor water tank overflow pipe.

[0017] In a preferred embodiment: the skeleton includes at least two main keels and at least one secondary keel, the main keels are installed on the outer wall of the building and arranged at intervals, the water storage sunshade grille is fixed to the main keel, the secondary keel is installed on the outer wall of the building and is provided with a support platform, and the water storage sunshade grille rests on the support platform.

[0018] In a preferred embodiment: porous water-absorbing material or planting soil material can be placed in the water storage tank.

[0019] In a preferred embodiment: the frame is made of stainless steel, and the water storage sunshade grille is made of aluminum alloy.

[0020] Compared with the background technology, this technical solution has the following advantages:

[0021] The water storage sunshade grille system is a new passive energy-saving technology for buildings. It uses the combined effects of sunshade and passive evaporation to reduce the temperature of the building's exterior wall, thereby reducing the heat transmitted from the exterior wall into the room, which helps to improve the indoor thermal environment, reduce the energy consumption of building air conditioning, and weaken the urban heat island effect. The water storage sunshade grille has the effect of sunshade and heat insulation, resists solar radiation, and reduces the comprehensive surface temperature of the building's exterior wall; and the water storage tank can store more water, and can also use non-traditional water resources such as rainwater, gray water or air conditioning condensate, which can save water resources to the greatest extent. And the water storage sunshade grille can be designed in combination with the architectural shape to enrich the building facade. At the same time, the system can be produced in a modular manner, with low cost. After the initial investment and installation, the later use cost and maintenance cost are very low, and it is also suitable for a variety of buildings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] Figure 1 The overall schematic diagram of a water storage sunshade grille system for passive cooling of building exterior walls according to a preferred embodiment is depicted.

[0024] Figure 2 A schematic diagram of a water storage sunshade grille unit of a preferred embodiment is shown.

[0025] Figure 3 A three-dimensional schematic diagram of a water storage sunshade grille unit according to a preferred embodiment is depicted. DETAILED DESCRIPTION

[0026] In the claims, description and the above-mentioned drawings of the present invention, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. are for distinguishing different objects rather than for describing a specific order.

[0027] In the claims, specification and the above-mentioned drawings of the present invention, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the present invention.

[0028] In the claims, specification and the above drawings of the present invention, unless otherwise clearly defined, the terms "fixed connection" and "fixed connection" should be understood in a broad sense, that is, any connection method without any displacement relationship and relative rotation relationship between the two parties, that is to say, including non-detachable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or elements.

[0029] In the claims, description and drawings of the present invention, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0030] Please refer to Figures 1 to 3 A preferred embodiment of a water storage sunshade grille system for passive cooling of building exterior walls, the water storage sunshade grille system for passive cooling of building exterior walls comprises a water supply tank 30 and a plurality of water storage sunshade grille units.

[0031] The water supply tank is arranged on the roof of the entire building, and is preferably provided with a water supply tank upper cover 36 .

[0032] The water storage sunshade grille system also includes a water tank inlet pipe 31 and a water tank liquid level control device. One end of the water tank inlet pipe 31 is connected to the water source and the other end faces the water supply tank 30. The water tank liquid level control device is installed at the other end of the water tank inlet pipe 31. Figure 1 As shown, the water source can be a traditional municipal water supply source or a non-traditional water source, such as rainwater, grey water or air conditioning condensate. A first switch valve 51 is also provided on the water tank inlet pipe 31 to open or close the water source. The water tank liquid level control device has the same structure as the water tank liquid level control device described later, both of which are float valves 34.

[0033] The water storage sunshade grille system also includes a water tank drain pipe 33 and a drain pipe 37. One end of the water tank drain pipe 33 is connected to the bottom end of the water supply tank 30, and the other end is connected to the drain pipe 37. The drain pipe 37 is connected to the municipal wastewater well.

[0034] It also includes a water tank overflow pipe 32 , the top of which is located in the water supply tank 30 , and the bottom is connected to the drain pipe 37 , and the height of the top of the water tank overflow pipe 32 is the highest liquid level of the water supply tank 30 .

[0035] Each grille unit includes a frame, a plurality of water storage sunshade grilles 20, a plurality of drainage pipes 25, a water tank water supply pipe 27 and a water tank liquid level control device.

[0036] The frame is made of stainless steel and is installed on the exterior wall of the building. Figure 2 As shown, the skeleton includes two main keels 10 and one secondary keel 11, the two main keels 10 are installed on the outer wall of the building and arranged at intervals, the two sides of the water storage sunshade grille 20 are respectively fixed to the two main keels 10, the secondary keel 11 is installed on the outer wall of the building and is located between the two main keels 10, and the secondary keel 11 is provided with a support platform, the water storage sunshade grille 20 leans against the support platform to increase the water storage load of the water storage sunshade grille 20. Specifically, the main keel 10 is fixed to the outer wall of the building using a stainless steel expansion anchor 12, the secondary keel 11 is fixed to the outer wall of the building using a wall anchor 13, and the two sides of the water storage sunshade grille 20 are connected to the main keel using bolts 23.

[0037] The water storage sunshade grilles 20 are fixedly connected to the frame and arranged at intervals up and down. Each water storage sunshade grille 20 is provided with a water storage tank 21. One end of the water tank water supply pipe 27 faces the water storage tank 21 located at the top, and the other end of the water tank water supply pipe 27 is connected to the water supply tank 30; the water storage tank 21 is provided with a drain port 24, and one end of each drainage pipe 25 is connected to the drain port 24 of the upper layer, and the other end is connected to the water storage tank 21 of the next layer; the water tank liquid level control device is installed at the water tank water supply pipe 27 and can open or disconnect the water tank water supply pipe 27 according to the liquid level height of the water storage tank 21 located at the bottom.

[0038] In this embodiment, the water tank liquid level control device includes a water tank float valve 26, which includes a valve body, a control valve core and a float. The valve body is installed on the water tank water supply pipe 27, and the control valve core is installed in the valve body. The float and the control valve core are connected through a transmission member. When the float floats at a set height of the water surface of the water storage tank 21, the control valve core is actuated to close the water tank water supply pipe 27.

[0039] In this embodiment, the system also includes a floor water tank 40, a floor water tank inlet pipe 41, a floor water tank liquid level control device and a floor water tank outlet pipe 45. One end of the floor water tank inlet pipe 41 is connected to the water supply tank 30 through the water tank outlet pipe 35, and the other end extends into the floor water tank 40. One end of the floor water tank outlet pipe 45 is connected to the floor water tank 40, and the other end is connected to the other end of the water tank supply pipe 27. The floor water tank liquid level control device is installed at the other end of the floor water tank inlet pipe 41. And, if Figure 1 As shown, a second switch valve 52 is also provided on the water tank outlet pipe 35. Preferably, a non-traditional water source inlet pipe 47 is also provided at the floor water tank 40 to connect with the non-traditional water source; a floor water tank liquid level control device 44 is provided at the other end of the floor water tank inlet pipe 41, and the floor water tank liquid level control device 44 can have the same structure as the water tank liquid level control device, which will not be described in detail; and the floor water tank 40 is also provided with a floor water tank cover 46. If necessary, the floor water tank 40 can be eliminated, and the water tank water supply pipe 27 can be directly connected to the water supply tank outlet pipe 35.

[0040] In this embodiment, the system also includes a floor water tank overflow pipe 42 and a floor water tank drain pipe 43. The top end of the floor water tank overflow pipe 42 extends into the floor water tank 40, and the bottom end is connected to the drain pipe 37. The height of the top end of the floor water tank overflow pipe 42 is the highest liquid level of the floor water tank 40; one end of the floor water tank drain pipe 43 is connected to the bottom end of the floor water tank 40, and the other end is connected to the drain pipe 37 or the floor water tank overflow pipe 42.

[0041] In this embodiment, water can be directly stored in the water storage tank 21, or porous water-absorbing materials or planting soil materials 28 can be placed in the water storage tank to increase the water retention effect.

[0042] The water storage sunshade grille 20 is made of aluminum alloy, or other metal materials with good corrosion resistance and weather resistance. In order to increase the strength of the water storage sunshade grille 20, structural ribs 22 can be set below the water storage sunshade grille 20.

[0043] The system uses a non-traditional water source. The water supply tank 30 arranged on the roof is used to supply water to the floor water tank 40 below; the floor water tank 40 supplies water to the water storage sunshade grille unit on that floor.

[0044] In the present invention, when the water level of the top-layer water storage tank 21 of the unit reaches the height of its water tank drain port 24, it enters the next-layer water storage tank 21 through the diversion effect of the water tank drainage pipe 25. After the water level of the next-layer water storage tank 21 reaches the height of its water tank drain port 24, it continues to be diverted into the next-layer water storage tank 21 through the water tank drainage pipe 25, and the cycle repeats. When the water level in the bottom-layer water storage tank 21 reaches a certain height, the water tank float valve 26 will be triggered to close and stop the water supply. Under the action of external heat, after a certain period of evaporation, the water level in the water storage tank 21 will drop, the float will drop, the water tank float valve 26 will open, and the water tank supply pipe 27 will supply water to the top-layer water storage tank 21, and the cycle repeats. In the rainy season, the water supply tank 30 located on the roof can open the box cover 36 to collect rainwater, and the collected rainwater is used to supply water to the system.

[0045] If the first switch valve 51 and the second switch valve 52 are closed and the water supply to the system is suspended in a season or period when cooling is not required, the evaporation cooling function of the present invention will be stopped.

[0046] Due to the different orientations of the building exterior walls and the obstruction of surrounding buildings or trees, the solar radiation received by the exterior walls may be unevenly distributed, and the amount of water evaporation in each unit may also be different. Therefore, each unit is individually provided with a sink float valve 26 and a sink water supply pipe 27, which will ensure the best cooling and energy-saving effects in a timely and appropriate manner.

[0047] The water supply of the present invention adopts all non-traditional water sources, fully utilizes the grey water system, air conditioning condensed water and rainwater, and uses the municipal pipe network to replenish water when the non-traditional water sources are insufficient.

[0048] Compared with the existing external wall vertical greening technology, the present invention has the advantages of simple construction, low later maintenance cost, relatively light weight, and no dead grass, fallen leaves and mosquito problems.

[0049] It should be noted that the anchor bolts, bolts, float valves and water pipes described in this application document are all common items in the prior art, and therefore are not described in detail in this application document.

[0050] As is known to all, metal profiles, anchors, bolts, plastic water pipes, etc. are widely used in the manufacturing industry, with advanced manufacturing processes, high industrialization and low prices. Once the embodiment of the present invention is installed, it can fully utilize non-traditional water resources to perform passive evaporative cooling on the exterior wall, and the subsequent operation and maintenance investment costs are low, and its cost is much lower than the existing air conditioning system. In addition, a water storage sunshade grille system for passive cooling of building exterior walls provided in the embodiment of the present invention still has a cooling effect of shading the building exterior wall without water supply.

[0051] The above description is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of the present invention. That is, equivalent changes and modifications made according to the patent scope of the present invention and the contents of the specification should still fall within the scope of the present invention.

Claims

1. A water storage sunshade grille system for passive cooling of building exterior walls, characterized by: It includes: A water supply tank and a plurality of water storage sunshade grille units, each grille unit comprises a frame, a plurality of water storage sunshade grilles, a plurality of drainage pipes, a water tank water supply pipe and a water tank liquid level control device, the frame is mounted on the exterior wall of the building, the water storage sunshade grilles are fixedly connected to the frame and arranged at intervals up and down, each water storage sunshade grille is provided with a water storage tank, one end of the water tank water supply pipe faces the water storage tank located at the top, and the other end of the water tank water supply pipe is connected to the water supply tank; the water storage tank is provided with a drain port, one end of each drainage pipe is connected to the drain port of the upper layer, and the other end is connected to the water storage tank of the next layer; the water tank liquid level control device is installed at the water tank water supply pipe and opens or disconnects the water tank water supply pipe according to the liquid level of the water storage tank located at the bottom; The water tank liquid level control device comprises a water tank float valve, which comprises a valve body, a control valve core and a float, wherein the valve body is installed on the water tank water supply pipe, the control valve core is installed in the valve body, and the float and the control valve core are connected through a transmission member; It also includes a water tank drain pipe and a drainage pipe. One end of the water tank drain pipe is connected to the bottom end of the water supply tank, and the other end is connected to the drainage pipe. The drainage pipe is connected to a municipal wastewater well.

2. The water storage sunshade grille system for passive cooling of building exterior walls according to claim 1 is characterized in that: It also includes a water tank inlet pipe and a water tank liquid level control device, one end of the water tank inlet pipe is connected to the water source and the other end faces the water supply tank, and the water tank liquid level control device is installed at the other end of the water tank inlet pipe.

3. The water storage sunshade grille system for passive cooling of building exterior walls according to claim 2 is characterized in that: It also includes a water tank overflow pipe, the top of which is located in the water supply tank, the bottom of which is connected to the drain pipe, and the height of the top of the water tank overflow pipe is the highest liquid level of the water supply tank.

4. The water storage sunshade grille system for passive cooling of building exterior walls according to claim 1, characterized in that: It also includes a floor water tank, a floor water tank water inlet pipe, a floor water tank liquid level control device and a floor water tank water outlet pipe, wherein one end of the floor water tank water inlet pipe is connected to the water supply tank and the other end extends into the floor water tank, one end of the floor water tank water outlet pipe is connected to the floor water tank and the other end is connected to the other end of the sink water supply pipe; the floor water tank liquid level control device is installed at the other end of the floor water tank water inlet pipe.

5. The water storage sunshade grille system for passive cooling of building exterior walls according to claim 4 is characterized in that: It also includes a floor water tank overflow pipe and a floor water tank drain pipe. The top of the floor water tank overflow pipe extends into the floor water tank, and the bottom end is connected to the drain pipe. The height of the top of the floor water tank overflow pipe is the highest liquid level of the floor water tank; one end of the floor water tank drain pipe is connected to the bottom end of the floor water tank, and the other end is connected to the drain pipe or the floor water tank overflow pipe.

6. The water storage sunshade grille system for passive cooling of building exterior walls according to claim 1, characterized in that: The skeleton includes at least two main keels and at least one secondary keel, the main keels are installed on the outer wall of the building and arranged at intervals, the water storage sunshade grille is fixed to the main keel, the secondary keel is installed on the outer wall of the building and is provided with a support platform, and the water storage sunshade grille rests on the support platform.

7. The water storage sunshade grille system for passive cooling of building exterior walls according to claim 1, characterized in that: Porous water-absorbing material or planting soil material is placed in the water storage tank.

8. The water storage sunshade grille system for passive cooling of building exterior walls according to claim 1 is characterized in that: The frame is made of stainless steel, and the water storage sunshade grille is made of aluminum alloy.

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