Multi-span greenhouse capable of preventing top evaporation heat dissipation
By using a combination of external sunshade net and white black and white film in the network greenhouse, the problem of severe heat dissipation in winter and lack of heat resistance in summer is solved, and better insulation and cooling effects are achieved, extending service life and saving costs.
Patent Information
- Application Number
- CN202422010939.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-08-20
AI Technical Summary
The existing townhouses have severe heat dissipation in winter, poor insulation effect, and single-layer plastic films have no heat resistance function.
The outer sunshade net and white black and white film covered by the surrounding and top are used, combined with the two-layer structure of the chain greenhouse frame, and the reflection and barrier effects of the white black and white film are used to achieve heat resistance and cooling in summer and reduce evaporation on the top of the greenhouse in winter.
It effectively improves the insulation effect in winter by about 30%, and the cooling effect in summer is significant, extends the service life of the greenhouse by 20%-30%, and saves production costs.
Smart Images
Figure CN222928914U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of plastic greenhouses, and more specifically, to a multi-span greenhouse for preventing evaporation and heat dissipation at the top. Background Art
[0002] The utility model patent with the publication number of CN 21888959U discloses a multi-span greenhouse with a wind and rain-proof skylight, which includes a plastic greenhouse composed of surrounding walls, hot-dip galvanized pipe main columns, ventilation openings on both sides, a top frame and a plastic film. The hot-dip galvanized pipe main columns are installed at the top of the surrounding walls, the top frame is installed at the top of the hot-dip galvanized pipe main columns, the cross-sectional shape of the plastic film is a double-arch shape, two vertically distributed top ventilation openings are fixedly installed at the top of the plastic film and are distributed relatively left and right, an external sunshade layer is installed above the plastic film through the surrounding walls, ventilation openings on both sides are provided on both sides of the plastic greenhouse and the external sunshade layer, and a heat preservation system is installed below the semi-underground drainage trough of the surrounding walls. The top vertical ventilation openings of this greenhouse are symmetrically distributed relatively, which is beneficial to replacing the plastic film, and at the same time increases the efficiency of ventilation and air exchange and reduces water accumulation on the shed roof. The external sunshade layer is installed outside the shed, which can ensure a normal planting environment in summer. By installing the external sunshade layer, a normal planting environment in summer is effectively ensured. However, there are the following disadvantages: This greenhouse has a single-layer plastic film and has no heat insulation function. At the same time, the multi-span greenhouse adopts a two-layer structure, but the four sides of the second layer are open, resulting in serious heat dissipation in winter in the greenhouse and poor heat preservation effect. Content of the Utility Model
[0003] Aiming at the problems and deficiencies existing in the above-mentioned prior art, the utility model provides a multi-span greenhouse for preventing evaporation and heat dissipation at the top. This multi-span greenhouse adopts the method of combining an external sunshade net with white-black-white films covering the surrounding and the top, achieving heat insulation and temperature reduction in summer and reducing evaporation at the top of the greenhouse in winter, thus achieving the effect of heat preservation and energy conservation.
[0004] To achieve the above purpose, the utility model provides the following technical solutions: A multi-span greenhouse for preventing evaporation and heat dissipation at the top, including a multi-span greenhouse framework body with a two-layer structure composed of several columns, middle-layer cross beams and unit columns. An external sunshade layer is installed at the top of the multi-span greenhouse framework body; several arched frames are provided on the second layer of the multi-span greenhouse framework body, and ventilation openings are provided at the top of the arched frames; diagonal braces are provided on the left and right sides of the multi-span greenhouse framework body, heat preservation films are covered on the front and rear sides of the first layer and on the arched frames of the multi-span greenhouse framework body, white-black-white films are also covered on the upper sides of the heat preservation films, heat preservation films and white-black-white films are sequentially covered on the diagonal braces on the left and right sides of the multi-span greenhouse framework body, and wind-proof curtains are adjusted around the second layer of the multi-span greenhouse framework body.
[0005] An access door is provided on the left side of the multi-span greenhouse framework body.
[0006] The heat preservation film is a PO film.
[0007] A multi-span greenhouse for preventing top evaporation and heat dissipation according to the present utility model, by adopting a span of 8 m and an arch frame design, replaces the traditional heat preservation quilt with a white-black-white film.
[0008] Compared with the prior art, a multi-span greenhouse for preventing top evaporation and heat dissipation according to the present utility model has the following beneficial effects:
[0009] 1. The multi-span greenhouse of the present utility model has good light-shielding effect. The white surface reflects sunlight, and the black surface blocks the light from passing through.
[0010] 2. The multi-span greenhouse of the present utility model has good heat preservation effect in winter. The heat preservation performance of the white-black-white film is improved by about 30%; in summer, for temperature reduction, the white inner layer of the white-black-white film can block the penetration of heat energy and play a better role in temperature reduction.
[0011] 3. The multi-span greenhouse of the present utility model has a long service life. The white surface reflects sunlight, reduces heat energy absorption, and the double-layer white film of the white-black-white film has a better reflection effect, and the service life of the white-black-white film is extended by 20%-30%.
[0012] 4. For the multi-span greenhouse of the present utility model, both the inner and outer white layers can reflect light, reduce the penetration of ultraviolet rays, and delay aging.
[0013] 5. For the multi-span greenhouse of the present utility model, by adopting the white-black-white film, the white inner layer can reflect light and block the penetration of heat energy, improving the utilization rate of light energy and heat energy. Description of the Drawings
[0014] Figure 1 It is a schematic structural diagram of the present utility model.
[0015] In the figure: 1. Outer wind-resistant column cross beam; 2. Column; 3. White-black-white film; 4. Middle cross beam; 5. Unit column; 6. Outer sunshade layer; 7. PO film; 8. Ventilation opening; 9. Windproof curtain. Detailed Embodiment
[0016] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.
[0017] Such as Figure 1As shown in the figure, the utility model provides a multi-span greenhouse for preventing top evaporation and heat dissipation, which includes a multi-span greenhouse framework with a two-story structure composed of several columns 2, middle-layer cross beams 4 and unit columns 5. An external sunshade layer 6 is installed on the top of the multi-span greenhouse framework; several arched frames are arranged on the second floor of the multi-span greenhouse framework, and ventilation openings 8 are arranged on the top of the arched frames; diagonal braces are arranged on the left and right sides of the multi-span greenhouse framework. Heat preservation films 7 are covered on the front and rear sides of the first floor and on the arched frames of the multi-span greenhouse framework. A white-black-white film 3 is also covered on the upper side of the heat preservation film 7. Heat preservation films 7 and white-black-white films 3 are successively covered on the diagonal braces 1 on the left and right sides of the multi-span greenhouse framework. Windproof curtains 9 are adjusted around the second floor of the multi-span greenhouse framework.
[0018] An access door is arranged on the left side of the multi-span greenhouse framework.
[0019] The heat preservation film 7 is a PO film.
[0020] A spraying system can be installed on the top of the multi-span greenhouse framework of the multi-span greenhouse for preventing top evaporation and heat dissipation of the utility model, which can be used for summer cooling and dust cleaning.
[0021] The working principle of the multi-span greenhouse for preventing top evaporation and heat dissipation of the utility model: By replacing the traditional heat preservation quilt with a white-black-white film, it not only reduces the load of the steel frame structure, but also plays a role in shading in summer and heat preservation in winter. At the same time, it prolongs the service life of the greenhouse and saves production costs.
[0022] Although the embodiments of the utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A multi-span greenhouse for preventing top evaporative heat dissipation, comprising a multi-span greenhouse frame body of a two-layer structure composed of a plurality of columns (2), a middle-layer crossbeam (4) and unit columns (5), an external sunshade layer (6) being installed on the top of the multi-span greenhouse frame body; a plurality of arch frames are arranged on the second layer of the multi-span greenhouse frame body, and a vent (8) is arranged on the top of the arch frame; diagonal braces (1) are arranged on the left and right sides of the multi-span greenhouse frame body, characterized in that: The front and rear sides of the first layer of the multi-span greenhouse frame and the arch frame are covered with a thermal insulation film (7), the upper side of the thermal insulation film (7) is also covered with a white-black film (3), the diagonal braces (1) on the left and right sides of the multi-span greenhouse frame are covered with a thermal insulation film (7) and a white-black film (3) in sequence, and the second layer of the multi-span greenhouse frame is surrounded by a windproof curtain (9).
2. A multi-span greenhouse for preventing top evaporative heat dissipation according to claim 1, characterized in that: An entrance door is arranged on the left side of the multi-span greenhouse frame.
3. A multi-span greenhouse for preventing top evaporative heat dissipation according to claim 1, characterized in that: The thermal insulation film (7) is a PO film.