Fabricated low-carbon sunlight greenhouse

Abstract

The utility model discloses an assembly type low-carbon sunlight greenhouse, which belongs to the field of indoor planting and comprises a greenhouse body, an inner thermal insulation covering system capable of being horizontally unfolded and folded is arranged in the middle of the greenhouse body in the height direction, and waste heat recovery equipment is mounted on the upper portion of the inner thermal insulation covering system. The waste heat recovery equipment comprises an air-water heat exchange cavity which is internally provided with a circulating water pipe and used for exchanging heat with hot air, and the circulating water pipe of the waste heat recovery equipment is connected with the energy storage device to store heat into soil on the lower portion of the greenhouse body for heat storage. The greenhouse main body comprises a north wall provided with a heat storage wall body, a south wall provided with a light-transmitting film and serving as a lighting surface, and east and west gable walls, and the south wall is further provided with a heat preservation quilt capable of being rolled up and spread out. According to the solar greenhouse, high-temperature air on the upper portion of the greenhouse is captured through the waste heat recovery device when sunlight exists, heat in the greenhouse is fully collected and stored in the land through air-water heat exchange, the temperature of the greenhouse at night is increased, the temperature of soil and plant roots is increased, and freezing damage of the solar greenhouse is reduced by means of the characteristic that the land delays heat release.

Description

Technical Field

[0001] The utility model relates to the field of indoor planting, in particular to an assembled low-carbon solar greenhouse. Background Art

[0002] The country has been gradually guiding the introduction of fruits, vegetables, flowers and green plants into greenhouses to promote the northward movement of the four-season planting belt of high-value-added crops, ensure that off-season fruits and vegetables are put on the market in advance, and increase the income of growers. It greatly reduces operating costs and improves production efficiency and economic benefits.

[0003] At present, there are several major pain points of daylight greenhouses: 1. Low room temperature at night in winter slows crop growth, delays time to market, and affects revenue; 2. Winter operation requires supplementary heating measures, which consumes a lot of energy and increases costs; 3. Without supplementary heating measures, the temperature is low and it is impossible to grow temperature-loving, high-value-added crops; 4. It is greatly affected by rain and snow and has poor disaster resistance. Therefore, a greenhouse is urgently needed to solve the above problems. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an assembled low-carbon solar greenhouse. When there is sunshine, the high-temperature air in the upper part of the greenhouse is captured by the waste heat recovery equipment, and the heat in the greenhouse is fully collected through air-water heat exchange and stored in the land. The characteristic of the land that delays heat release is utilized to increase the temperature of the greenhouse at night, increase the temperature of the soil and plant roots, and reduce frost damage in the solar greenhouse.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] The assembled low-carbon solar greenhouse includes a greenhouse main body. An internal insulation covering system that can be horizontally unfolded and folded is arranged in the middle of the height direction of the greenhouse main body. A waste heat recovery device is installed on the upper part of the internal insulation covering system. The waste heat recovery device includes an air-water heat exchange chamber with a circulating water pipe inside for exchanging heat with hot air. The circulating water pipe of the waste heat recovery equipment is connected to the energy storage device to store heat in the soil at the bottom of the greenhouse main body for heat storage. The greenhouse main body includes a north wall with a heat storage wall installed, a south wall with a light-transmitting film as a lighting surface, and east and west gables. A rolled-up and spread-out insulation quilt is also arranged on the south wall.

[0007] A further improvement of the technical solution of the utility model is that: the north wall includes columns and diagonal braces on the upper parts of the columns, the heat storage wall is installed in the columns, the south wall includes an arched frame extending from the top of the diagonal braces to the ground, and the east and west gables form a closed greenhouse body with the north wall and the south wall.

[0008] A further improvement of the technical solution of the utility model is that a horizontal support is installed in the middle of the greenhouse body, and an inner insulation layer formed by a retractable flexible insulation material is laid on the support. The inner insulation layer is folded and opened to achieve the fusion and isolation of the upper and lower spaces of the greenhouse body.

[0009] A further improvement of the technical solution of the utility model is that the support is selected from trusses or screen support wires arranged in the greenhouse body.

[0010] A further improvement of the technical solution of the utility model is that: the south wall comprises a raised arch surface formed by at least one layer of arched skeleton, and a light-transmitting film is laid on the arch surface.

[0011] A further improvement of the technical solution of the utility model is that the arched frame is provided with two layers, an inner layer and an outer layer, to form two raised arched surfaces, both arched surfaces are paved with light-transmitting films, and a heat-insulating quilt that can be rolled up and spread out is arranged between the two layers of the arched frame.

[0012] A further improvement of the technical solution of the utility model is that a heat storage wall is also arranged at the lower part of the south wall, and the heat storage wall includes containers for storing liquid inside which are arranged closely side by side, and a layer of nano heat absorbing material is sprayed on the outer surface of the container.

[0013] A further improvement of the technical solution of the utility model is that the energy storage device includes a circulation pump, a water inlet pipeline, a return water pipeline and an underground heat exchange pipe, the upper ends of the water inlet pipeline and the return water pipeline are respectively connected to the circulating water pipe of the waste heat recovery equipment, and the lower ends are connected to the head and tail ends of the underground heat exchange pipe.

[0014] A further improvement of the technical solution of the utility model is that: a plurality of waste heat recovery devices are evenly distributed between the east and west gables, each waste heat recovery device corresponds to an energy storage device, and the inlet pipe of the circulating water pipe of each waste heat recovery device is connected to the water inlet pipe of the energy storage device, and the outflow pipe is connected to the return water pipe of the energy storage device.

[0015] A further improvement of the technical solution of the utility model is that the waste heat recovery equipment includes an air-water heat exchange chamber, the two ends of which are respectively connected to a heat collection chamber for collecting hot air and an exhaust chamber for discharging the heat-exchanged air, a first heat exchanger and a second heat exchanger connected in series are arranged in the air-water heat exchange chamber, the first heat exchanger and the second heat exchanger are connected to the buried heat exchange pipe in the soil through an inlet pipe and an outlet pipe, a temperature sensor is arranged on the waste heat recovery equipment for sensing the temperature of the air around the waste heat recovery equipment, and the temperature sensor transmits the temperature signal to the control cabinet to control the start and stop of the circulation pump.

[0016] Due to the adoption of the above technical solution, the technical progress achieved by the utility model is:

[0017] The utility model connects the waste heat recovery equipment on the upper part of the greenhouse and the energy storage device underground through pipelines to form a closed loop. When there is sunshine, the waste heat recovery equipment captures the high-temperature air on the upper part of the greenhouse, and through air-water heat exchange, the heat in the greenhouse is fully collected and stored in the land. The characteristic of the land that delays heat release is utilized to increase the temperature of the greenhouse at night, increase the temperature of the soil and plant roots, and reduce frost damage in the solar greenhouse.

[0018] Installing a heat storage wall on the north wall of the solar greenhouse adds an additional layer of internal insulation, stores heat inside the greenhouse, reduces heat loss on the lighting surface, and more than doubles the insulation capacity of the lighting surface.

[0019] The main part of the utility model greenhouse is similar to the peak roof structure as a whole, and the horizontal trusses are designed inside to increase the overall structural coordination, with better snow and wind resistance, and realize design standardization, on-site assembly, and automated use. The overall structure is stable, rust and corrosion resistant, and the structure has a long durability. The lighting surface uses a double-arch double-membrane structure to avoid damage to the insulation system in rain, snow, and windy weather, improve the service life of the quilt, and also increase the insulation effect of the lighting surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a side view structural schematic diagram of the utility model;

[0022] Figure 2 This is a front view structural schematic diagram of the utility model;

[0023] Figure 3 It is a side view structural diagram of the waste heat recovery equipment;

[0024] Figure 4 It is a schematic diagram of the structure of the waste heat recovery equipment from a top view;

[0025] Figure 5 is a schematic structural diagram of Embodiment 2;

[0026] Among them, 1. Waste heat recovery equipment, 1-1. Air-water heat exchange chamber, 1-2. Heat collection chamber, 1-3. Exhaust chamber, 1-4. First heat exchanger, 1-5. Second heat exchanger, 2. North wall, 2-1. Column, 2-2. Diagonal brace, 3. South wall, 4. Insulation quilt, 5. Truss, 6. Arched frame, 7. Inflow pipe, 8. Outflow pipe, 9. Fan, 10. Gable, 11. Inner insulation layer, 12. Circulation pump, 13. Water inlet pipeline, 14. Return pipeline, 15. Underground heat exchange pipe. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the embodiments:

[0028] Example 1

[0029] Assembled low-carbon solar greenhouse, such as Figure 1 , 2 As shown in , 3 and 4, it includes a greenhouse body, which is similar to a pointed roof structure as a whole. From the cross section, the north wall includes a column 2-1 and a diagonal brace 2-2 on the upper part of the column. The column 2-1 can be vertical or inclined. The heat storage wall is installed in the column 2-1 to form the north wall. The south wall 3 includes a layer of arched frame 6 extending from the top of the diagonal brace to the ground. The east and west gables 10 form a closed greenhouse body with the north wall 2 and the south wall 3, wherein the south wall serves as a lighting surface. A light-transmitting film is laid on the arched frame 6, and a heat-insulating quilt 4 is also arranged outside the arched frame 6. The heat-insulating quilt 4 can be rolled up and spread out. An internal heat-insulating covering system that can be horizontally unfolded and retracted is arranged in the middle of the height direction of the greenhouse body. Among them, the internal insulation covering system can be equipped with a horizontal support at the middle column 2-1 of the greenhouse body. The support is selected from a truss 5 or a screen line. Here, the truss 5 is taken as an example. An internal insulation layer 11 formed by a flexible insulation material is arranged on the truss 5. The internal insulation layer 11 is folded and opened to achieve the fusion and isolation of the upper and lower spaces of the greenhouse body. There are many kinds of existing flexible insulation materials. Different flexible insulation materials can be selected according to the needs in the greenhouse. They can be insulation blankets, bubble films and other flexible insulation materials. A waste heat recovery device 1 is installed on the upper part of the internal insulation covering system. The waste heat recovery device 1 is connected to the energy storage device to store heat in the soil at the bottom of the greenhouse body for heat storage.

[0030] The heat storage wall includes containers with internal liquid storage arranged closely side by side, and a layer of nano heat absorbing material is sprayed on the outer surface of the container. The nano heat absorbing material can be a black titanium heat absorbing film layer.

[0031] The waste heat recovery device 1 includes an air-water heat exchange chamber 1-1, and the two ends of the air-water heat exchange chamber 1-1 are respectively connected to a heat collection chamber 1-2 and an exhaust chamber 1-3, the heat collection chamber 1-2 collects hot air, and the exhaust chamber 1-3 exhausts the heat exchanged air. Among them, the heat collection chamber 1-2 includes an arc-shaped air inlet channel, the heat collection chamber 1-2 opens upward, and hot air enters the air-water heat exchange chamber 1-1 after passing through the arc-shaped channel from the opening of the heat collection chamber 1-2. An air inlet for connecting to the air-water heat exchange chamber 1-1 is set on one side of the exhaust chamber 1-3, and an exhaust port is set on the other side. The space of the exhaust chamber 1-3 gradually decreases from the air inlet to the exhaust port, and a fan 9 is set in the exhaust chamber 1-3.

[0032] The air-water heat exchange chamber 1-1 is provided with a first heat exchanger 1-4 and a second heat exchanger 1-5 connected in series. The heat exchanger is an air-water heat exchanger. A plurality of thin coils are arranged vertically and horizontally inside the heat exchanger. The coils contain medium water. The air entering from the air inlet pipe flows through the outer wall of the coils and exchanges heat with the water in the coils.

[0033] There are multiple waste heat recovery devices 1 evenly distributed between the east and west gables, and each waste heat recovery device 1 corresponds to an energy storage device. The energy storage device includes a circulation pump 12, a water inlet pipeline 13, a return water pipeline 14 and an underground heat exchange pipe 15. The inlet pipe 7 of the circulating water pipe of each waste heat recovery device 1 is connected to the water inlet pipeline 13 of the energy storage device, and the outflow pipe 8 is connected to the return water pipeline 14 of the energy storage device. The lower ends of the water inlet pipeline 13 and the return water pipeline 14 are connected to the underground heat exchange pipe 15.

[0034] During sunny days, sunlight shines on the greenhouse, causing its temperature to rise rapidly. The hot air on the upper part of the greenhouse body enters the air-water heat exchange chamber, and the hot air and the cold water in the air-water heat exchange chamber exchange heat. The heated water converges to the outflow main pipe and is connected to the return pipe, entering the underground heat exchange pipe to heat the soil; at the same time, the exchanged cold air is blown out to cool the greenhouse. The circulation pump drives the water in the pipeline to flow, and the water circulates in the underground heat exchange pipe and the heat exchanger, completing the heat exchange at the same time. At night, the soil has good heat storage performance and slow heat release, so that the soil emits heat and transfers it to the greenhouse, raising the temperature in the greenhouse to ensure that the plants survive and grow under low temperature conditions.

[0035] The overall structure of the utility model is ingenious, and a horizontal truss is designed inside to increase the coordination of the overall structure. It has better resistance to snow and wind, realizes design standardization, on-site assembly, and automated use. The overall structure is stable, has strong anti-rust and anti-corrosion capabilities, and the structure has a long durability.

[0036] Preferably, a temperature sensor is provided on the waste heat recovery device 1 for sensing the temperature of the air around the waste heat recovery device. The temperature sensor transmits the temperature signal to the control cabinet, and the control cabinet controls the start and stop of the circulation pump and controls the water circulation in the first heat exchanger 1-4 and the second heat exchanger 1-5.

[0037] Example 2

[0038] The difference between this embodiment and embodiment 1 is that the south wall 3 is provided with two raised arch surfaces formed by two layers of inner and outer arch frames 6, and each arch surface is paved with a light-transmitting film, that is, the south wall is installed with two layers of greenhouse film. A heat storage wall is provided at the lower part of the south wall 3 of the greenhouse body, and the heat storage wall includes containers for storing liquids arranged closely side by side, and a layer of nano heat-absorbing material is sprayed on the outer surface of the container, such as Figure 5 shown.

[0039] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. Assembled low-carbon solar greenhouse, characterized by: The invention comprises a greenhouse main body, wherein an inner heat-insulating covering system which can be horizontally unfolded and retracted is arranged in the middle of the height direction of the greenhouse main body, and a waste heat recovery device (1) is installed on the upper part of the inner heat-insulating covering system. The waste heat recovery device (1) comprises an air-water heat exchange chamber (1-1) with a circulating water pipe arranged therein for exchanging heat with hot air. The circulating water pipe of the waste heat recovery device (1) is connected to an energy storage device to store heat in the soil at the bottom of the greenhouse main body for heat storage. The greenhouse main body comprises a north wall (2) with a heat storage wall, a south wall (3) with a light-transmitting film as a lighting surface, and east and west gables (10). The south wall (3) is also provided with a heat-insulating quilt (4) which can be rolled up and spread out.

2. The assembled low-carbon solar greenhouse according to claim 1, characterized in that: The north wall (2) includes columns (2-1) and diagonal braces (2-2) on the upper portions of the columns; a heat storage wall is installed within the columns (2-1); the south wall (3) includes an arched frame (6) extending from the top of the diagonal braces to the ground; and the east and west gables (10) form a sealed greenhouse body with the north wall (2) and the south wall (3).

3. The assembled low-carbon solar greenhouse according to claim 1, characterized in that: A horizontal support is installed in the middle of the greenhouse body, and an inner insulation layer (11) formed of a retractable flexible insulation material is laid on the support. The inner insulation layer (11) is folded and opened to achieve fusion and isolation of the upper and lower spaces of the greenhouse body.

4. The assembled low-carbon solar greenhouse according to claim 1, characterized in that: The support is selected from trusses (5) or screen wires arranged in the greenhouse body.

5. The assembled low-carbon solar greenhouse according to claim 2, characterized in that: The south wall (3) comprises a raised arch surface formed by at least one layer of arched skeleton (6), and a light-transmitting film is laid on the arch surface.

6. The assembled low-carbon solar greenhouse according to claim 5, characterized in that: The arched frame (6) is provided with two layers, an inner layer and an outer layer, to form two raised arched surfaces, both of which are covered with light-transmitting films, and a heat-insulating quilt (4) that can be rolled up and spread out is provided between the two layers of the arched frame (6).

7. The assembled low-carbon solar greenhouse according to claim 1, characterized in that: A heat storage wall is also provided at the lower part of the south wall (3). The heat storage wall comprises containers for storing liquids arranged closely side by side, and a layer of nano heat absorbing material is sprayed on the outer surface of the containers.

8. The assembled low-carbon solar greenhouse according to claim 1, characterized in that: The energy storage device comprises a circulation pump (12), a water inlet pipeline (13), a water return pipeline (14) and an underground heat exchange pipe (15); the upper ends of the water inlet pipeline (13) and the water return pipeline (14) are respectively connected to the circulation water pipe of the waste heat recovery equipment (1), and the lower ends are connected to the head and tail ends of the underground heat exchange pipe (15).

9. The assembled low-carbon solar greenhouse according to claim 8, characterized in that: A plurality of waste heat recovery devices (1) are evenly distributed between the east and west gables, and each waste heat recovery device (1) corresponds to an energy storage device. The inflow pipe (7) of the circulating water pipe of each waste heat recovery device (1) is connected to the water inlet pipe (13) of the energy storage device, and the outflow pipe (8) is connected to the return water pipe (14) of the energy storage device.

10. The assembled low-carbon solar greenhouse according to claim 8, characterized in that: The waste heat recovery device (1) comprises an air-water heat exchange chamber (1-1), the two ends of which are respectively connected to a heat collection chamber (1-2) for collecting hot air and an exhaust chamber (1-3) for discharging the heat exchanged air. A first heat exchanger (1-4) and a second heat exchanger (1-5) connected in series are arranged in the air-water heat exchange chamber (1-1). The first heat exchanger (1-4) and the second heat exchanger (1-5) are connected to an underground heat exchange pipe (15) in the soil through an inlet pipe (7) and an outlet pipe (8). A temperature sensor is arranged on the waste heat recovery device (1) for sensing the temperature of the air surrounding the waste heat recovery device. The temperature sensor transmits a temperature signal to a control cabinet to control the start and stop of a circulation pump.

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