Light-transmitting flame-retardant energy-saving 3D climate curtain for greenhouse

Abstract

The utility model is applicable to the technical field of curtains, and provides a light-transmitting flame-retardant energy-saving 3D climate curtain for a greenhouse, which comprises a cloth body, the cloth body comprises a top braid layer, a bottom braid layer and filling layers sandwiched between the top braid layer and the bottom braid layer, the top braid layer and the bottom braid layer are stacked in sequence, and the filling layers are arranged at equal intervals along the length direction of the cloth body. The filling layer comprises a mixed nano polyester fiber layer and a thin film layer, and the thickness of the mixed nano polyester fiber layer is equal to that of the thin film layer; and an air layer is formed by a gap between every two adjacent filling layers between the top woven layer and the bottom woven layer. The top braid layer, the bottom braid layer and the filling layers are sewn through sewing threads, and the sewing threads are arranged in the center of each set of filling layers. The device solves the technical problems that an existing greenhouse curtain is difficult to give consideration to heat preservation and light transmission, is not beneficial to winding and is difficult to discharge moisture, and achieves the technical effects that the heat preservation effect is improved, meanwhile, good light transmission and moisture permeability are achieved, the structure is light and can be wound, and standardized processing and long-term use are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of curtain technology, and more specifically, it relates to a light-transmitting, flame-retardant, energy-saving 3D climate curtain for greenhouses. Background Technology

[0002] Greenhouses, as crucial facilities for achieving efficient crop cultivation in modern agriculture, directly impact crop growth and yield through their environmental control capabilities. Within greenhouse systems, the curtains play a key role in heat preservation, shading, and humidity regulation. Greenhouse curtains are typically opened and closed via a curtain drive system located at the top or side walls of the greenhouse, thereby adjusting parameters such as light, temperature, and humidity according to environmental changes. In winter or cold regions, the heat preservation capabilities of the curtains are particularly important; they must effectively reduce heat loss without affecting the crops' light requirements. Therefore, the design of the curtain materials and structure is paramount.

[0003] Currently, most commonly used greenhouse curtain products employ traditional single-layer or multi-layer insulated curtains. These curtains have a high weight per unit area, leading to higher requirements for the drive system and resulting in high energy consumption, heavy mechanical load, and high maintenance costs. Furthermore, because these curtains generally use opaque materials, their poor light transmittance makes it difficult to meet the natural light requirements of crops throughout their growth cycle, especially in areas with insufficient sunlight, thus negatively impacting crop photosynthesis.

[0004] Therefore, there is an urgent need for a new type of curtain material or structural solution that possesses both good thermal insulation performance and a certain degree of light transmittance, while effectively reducing the overall weight of the curtain. Based on the above issues, this application proposes a light-transmitting, flame-retardant, energy-saving 3D climate curtain for greenhouses. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a greenhouse light-transmitting, flame-retardant, energy-saving 3D climate curtain with a reasonable structure that achieves multiple balances of heat preservation, light transmission, moisture transmission and energy saving performance by alternately setting filling layers and air layers.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A light-transmitting, flame-retardant, energy-saving 3D climate curtain for greenhouses includes a fabric body. The fabric body includes at least three functional layers stacked sequentially. Each functional layer includes at least one top woven layer, at least one bottom woven layer, and one or more filling layers disposed therebetween. The filling layers are equidistantly spaced along the length of the fabric body. Each filling layer includes a mixed nano-polyester fiber layer and a film layer. The mixed nano-polyester fiber layer and the film layer have the same thickness. The gaps between the top woven layer and the bottom woven layer, located between every two adjacent filling layers, constitute an air layer.

[0008] The present invention is further configured such that the top braided layer, the bottom braided layer and the filling layer are sewn together by a stitch, and the stitch is located at the center of each group of filling layers.

[0009] The present invention is further configured such that: the top braided layer includes warp and weft threads, and the warp and weft threads form a braided structure by interlacing.

[0010] The present invention is further configured such that: the filling layer includes two sets of nonwoven fabrics, and a mixed nano-polyester fiber layer and a film layer are sandwiched between the two sets of nonwoven fabrics.

[0011] The present invention is further configured such that the two sets of nonwoven fabrics are respectively attached to the inner surfaces of the top woven layer and the bottom woven layer.

[0012] The present invention is further configured such that the width of the air layer is equal to the width of the filling layer, and its height is consistent with the overall height of the filling layer.

[0013] The present invention is further configured such that: the edge of the fabric is provided with a locking line, the locking line being used to fix the edges of the top woven layer and the bottom woven layer.

[0014] In summary, this application includes at least one of the following beneficial technical effects:

[0015] 1. This application utilizes an equidistantly spaced air layer structure between the top and bottom woven layers to create alternating filled and air areas within the fabric. This not only achieves a three-dimensional support effect for the curtain structure but also effectively enhances its light transmittance. Since the air layers are not filled with any solid material, they have high light transmittance, allowing for the introduction of natural light while ensuring the basic insulation performance of the curtain. This provides the necessary lighting conditions for greenhouse crops, helping to improve photosynthetic efficiency and increase crop yield and quality.

[0016] 2. This application utilizes an air layer to replace part of the filling structure, leveraging the insulating properties of still air to effectively improve the thermal insulation performance of the curtain without significantly increasing its thickness, weight, or manufacturing costs. This design not only saves on the amount of substantial filling materials such as the film layer and the mixed nano-polyester fiber layer, reducing production costs, but also reduces the volume occupied by the curtain during rolling and unfolding, improving its ease of use in greenhouses. Furthermore, because the air layer has a much higher permeability than the solid filling layer, it also enhances the overall moisture permeability and wicking capacity of the curtain, preventing crop diseases and fabric structure damage caused by excessive humidity inside the greenhouse, thereby extending the curtain's lifespan and stabilizing the greenhouse microclimate. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the structure of a light-transmitting, flame-retardant, energy-saving 3D climate curtain for greenhouses according to this utility model.

[0018] Figure 2 This is a schematic diagram of the structure of the top braided layer in this utility model.

[0019] Figure 3 This is a top view of a light-transmitting, flame-retardant, energy-saving 3D climate curtain for greenhouses according to this utility model.

[0020] Explanation of reference numerals in the attached diagram: 1. Top braided layer; 11. Warp; 12. Weft; 2. Bottom braided layer; 3. Filling layer; 31. Non-woven fabric; 32. Mixed nano-polyester fiber layer; 33. Film layer; 4. Air layer; 5. Seam thread; 6. Overlock thread. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0023] Example 1, please refer to Figure 1 , Figure 2 The present invention provides the following technical solution:

[0024] A light-transmitting, flame-retardant, energy-saving 3D climate curtain for greenhouses includes a fabric body, which includes at least three functional layers stacked sequentially. The functional layers include a top woven layer 1, a bottom woven layer 2, and one or more filling layers 3 disposed therebetween. The filling layers 3 are equidistantly spaced along the length of the fabric body.

[0025] In a preferred embodiment, the fabric is configured as a three-layer structure consisting of a top woven layer 1, a bottom woven layer 2, and a filling layer 3, in order to achieve good light transmittance, heat insulation, and flame retardant effects.

[0026] In other alternative embodiments, to improve overall strength and thermal insulation performance, the top braided layer 1 and the bottom braided layer 2 can each be configured in two or more layers, and the filling layer 3 can also be arranged in double or multiple layers as needed, thereby forming a structural combination of four, five or more layers. The layers can be connected and fixed by stitches, and an air layer can be formed in areas without filling material to further improve thermal insulation and energy-saving performance.

[0027] The filling layer 3 specifically includes a mixed nano-polyester fiber layer 32 and a film layer 33. The mixed nano-polyester fiber layer 32 and the film layer 33 have the same thickness and can be stacked or arranged side by side in each filling area to enhance thermal insulation and provide a flexible support structure. The gap between each two adjacent filling layers 3, located between the top woven layer 1 and the bottom woven layer 2, forms an air layer 4. Structurally, the width of this air layer 4 is consistent with that of the adjacent filling layer 3, and its thickness is also consistent with the overall height of the filling layer 3. This structure ensures a flat overall appearance of the curtain while maintaining structural symmetry and flexibility, facilitating roll-up and unfolding.

[0028] Furthermore, the air layer 4 creates a crisscrossing grid-like spacing structure between the top woven layer 1 and the bottom woven layer 2, forming a closed, static air unit during the manufacturing process. This static air unit has a certain heat insulation capacity and can replace some of the filling material, reducing production costs and material usage while also decreasing the roll-up volume and improving the curtain's flexibility and maneuverability.

[0029] Compared to curtains with a fully filled structure, this fabric, through its intermittent filling design, not only meets basic thermal insulation requirements but also offers superior material utilization efficiency and ease of processing. It is suitable for large-scale production and standardized cutting applications, and is widely applicable to modern greenhouse environments.

[0030] It should be noted that this fabric is primarily designed for greenhouse agriculture environments, where light and humidity are crucial for plant growth. By employing an alternating structure of filling layer 3 and air layer 4, not only is overall light transmittance improved, but the fabric's moisture permeability is also significantly enhanced. The tightly packed film layer 33 within filling layer 3 would severely inhibit moisture release if continuously filled over a large area, leading to humidity buildup inside the greenhouse. Air layer 4, on the other hand, provides natural moisture permeability channels, helping to balance the humidity difference between the inside and outside, and improving the greenhouse's microclimate regulation capabilities.

[0031] Meanwhile, the air layer 4, being unfilled with any solid material, possesses good light transmission properties, allowing natural light to enter the greenhouse through the top woven layer 1 and the bottom woven layer 2, effectively supporting plant photosynthesis. However, the continuous filling structure not only increases the heaviness of the curtain but also poses risks such as water accumulation and collapse. Particularly at the top, long-term water accumulation can easily create depressions, affecting the safety and lifespan of the curtain structure.

[0032] To ensure the stable fixation of the filling layer 3, the top woven layer 1, the bottom woven layer 2, and the filling layer 3 are sewn together with stitches 5, which are positioned at the center of each set of filling layers 3. This design effectively prevents the filling layer from shifting while enhancing the overall tensile strength and durability of the curtain.

[0033] Please see Figure 2The top woven layer 1 is composed of warp threads 11 and weft threads 12 interwoven to form a tight mesh structure, possessing good tensile strength and long-term durability. The preferred material is high-strength, UV-resistant polymer fiber to enhance its service life under high humidity and high light conditions in greenhouses.

[0034] The filling layer 3 is preferably composed of two sets of non-woven fabrics 31, with a mixed nano-polyester fiber layer 32 and a film layer 33 sandwiched between the two sets of non-woven fabrics 31, forming a sandwich structure. The non-woven fabric 31 is preferably made of flame-retardant polyester material, which has good flame-retardant and breathable properties, further improving the environmental adaptability of the curtain.

[0035] To prevent the filling layer from shifting during use, two sets of non-woven fabrics 31 are respectively attached to the inner sides of the top woven layer 1 and the bottom woven layer 2, improving the bonding stability of each layer and enhancing the overall structural integrity and appearance flatness of the curtain.

[0036] In addition, to prevent wear and tear or cracking of the curtain edges due to long-term pulling or friction, the fabric edges are equipped with locking seams 6, which are used to reinforce and sew the edges of the top woven layer 1 and the bottom woven layer 2, thereby improving the overall durability and service life.

[0037] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

Claims

1. A light-transmitting, flame-retardant, energy-saving 3D climate curtain for greenhouses, comprising a fabric body, characterized in that: The fabric includes at least three functional layers stacked sequentially. Each functional layer includes at least one top braided layer (1), at least one bottom braided layer (2), and one or more filling layers (3) disposed therebetween. The filling layers (3) are equidistantly spaced along the length of the fabric. Each filling layer (3) includes a mixed nano-polyester fiber layer (32) and a film layer (33). The mixed nano-polyester fiber layer (32) and the film layer (33) have the same thickness. The gap between the top braided layer (1) and the bottom braided layer (2) between each two adjacent filling layers (3) constitutes an air layer (4).

2. The greenhouse light-transmitting, flame-retardant, energy-saving 3D climate curtain according to claim 1, characterized in that: The top braided layer (1), the bottom braided layer (2), and the filling layer (3) are sewn together by a suture (5), which is located at the center of each filling layer (3).

3. The greenhouse light-transmitting, flame-retardant, energy-saving 3D climate curtain according to claim 1, characterized in that: The top braided layer (1) includes warp (11) and weft (12), and the warp (11) and weft (12) form a braided structure by interlacing.

4. The greenhouse light-transmitting, flame-retardant, energy-saving 3D climate curtain according to claim 1, characterized in that: The filling layer (3) includes two sets of nonwoven fabrics (31), with a mixed nano-polyester fiber layer (32) and a film layer (33) sandwiched between the two sets of nonwoven fabrics (31).

5. A light-transmitting, flame-retardant, energy-saving 3D climate curtain for greenhouses according to claim 4, characterized in that: The two sets of nonwoven fabrics (31) are respectively attached to the inner surfaces of the top braided layer (1) and the bottom braided layer (2).

6. The greenhouse light-transmitting, flame-retardant, energy-saving 3D climate curtain according to claim 1, characterized in that: The width of the air layer (4) is equal to the width of the filling layer (3), and its height is consistent with the overall height of the filling layer (3).

7. The greenhouse light-transmitting, flame-retardant, energy-saving 3D climate curtain according to claim 1, characterized in that: The fabric edge is provided with a locking line (6), which is used to fix the edges of the top braided layer (1) and the bottom braided layer (2).

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