Dual-radiation cold chamber greenhouse system

Abstract

The utility model belongs to the technical field of greenhouse cooling, and particularly relates to a dual-radiation cold chamber greenhouse system which comprises a greenhouse body, a sky radiation refrigeration module, a radiation suspended ceiling, a water chilling unit and a fresh air handling unit. The radiation suspended ceiling is arranged on the inner side of the top of the greenhouse body, a water inlet of the radiation suspended ceiling is connected with a water outlet of the water chilling unit, a water outlet of the radiation suspended ceiling is connected with a water inlet of the water chilling unit through a water return pipeline, and a fresh air inlet of the fresh air machine is provided with an air inlet pipeline. The water return pipeline and the air inlet pipeline are both arranged on the sky radiation refrigeration module, and water flowing to the water chilling unit along the water return pipeline and fresh air flowing to the fresh air handling unit along the air inlet pipeline are both pre-cooled through the sky radiation refrigeration module. According to the utility model, the storage requirement of the greenhouse on articles and the corresponding planting requirement of plants in high-temperature and high-humidity environment areas can be better met, the energy consumption of integral refrigeration can be reduced, and the greenhouse is more environment-friendly and energy-saving.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of greenhouse cooling, and particularly relates to a double-radiation cold room greenhouse system. BACKGROUND

[0002] As carbon dioxide emissions increase year by year, building energy consumption increases year by year, in response to the call and requirement of energy saving and emission reduction, it is particularly important to upgrade the refrigeration technology to improve its efficiency while ensuring its energy saving benefit.

[0003] Traditional greenhouse cooling generally includes opening the ventilation opening to form convection, covering the sunshade net or sunshade canopy on the outer membrane of the greenhouse, installing the water curtain spraying device, opening and maintaining ventilation at high temperature, and irrigating the water channel and laying straw. The foregoing methods have low cooling efficiency, limited and unstable cooling degree, and can only be used for greenhouses in conventional environmental temperature areas. For greenhouses in high temperature and high humidity areas, the foregoing methods cannot meet the stable and effective cooling and refrigeration requirements of the greenhouse all year round, resulting in limited planting or storage of materials. In addition, if the conventional refrigeration method is used to cool and refrigerate the greenhouse, the energy consumption is also high. UTILITY MODEL CONTENT

[0004] The technical problem to be solved by the utility model is to provide a double-radiation cold room greenhouse system that better meets the storage requirements of the greenhouse and the corresponding plant planting requirements in high temperature and high humidity environments, reduces the overall refrigeration energy consumption, and is more environmentally friendly and energy-saving.

[0005] The content of the utility model includes a greenhouse body, a sky radiation refrigeration module, a radiation ceiling, a water chiller unit, and a fresh air unit.

[0006] The radiation ceiling is arranged on the inner side of the top of the greenhouse body, the water inlet of the radiation ceiling is connected with the water outlet of the water chiller unit, the water outlet of the radiation ceiling is connected with the water inlet of the water chiller unit through the return water pipeline, the fresh air unit is used for inputting fresh air into the interior of the greenhouse body and discharging the return air in the interior of the greenhouse body to the exterior of the greenhouse body, and the fresh air inlet of the fresh air unit is provided with an air inlet pipeline.

[0007] The return water pipeline and the air inlet pipeline are both arranged on the sky radiation refrigeration module, and the water flowing along the return water pipeline to the water chiller unit and the fresh air flowing along the air inlet pipeline to the fresh air unit are both pre-cooled by the sky radiation refrigeration module.

[0008] Further, the sky radiation refrigeration module comprises a sky radiation refrigeration plate and a phase change energy storage unit, the sky radiation refrigeration plate comprises a heat conductive material layer, a solar radiation reflection layer and an infrared radiation emission layer arranged in sequence, the phase change energy storage unit is arranged on the side of the heat conductive material layer away from the solar radiation reflection layer and the infrared radiation emission layer, and the return water pipeline and the air inlet pipeline are embedded on the sky radiation refrigeration plate and arranged on the side of the heat conductive material layer away from the solar radiation reflection layer and the infrared radiation emission layer.

[0009] Further, the sky radiation refrigeration module further comprises an insulation layer, and the insulation layer is arranged on the side of the sky radiation refrigeration plate, the side of the phase change energy storage unit and the bottom of the phase change energy storage unit.

[0010] Further, the sky radiation refrigeration module is arranged on the top of the greenhouse body.

[0011] Further, the return water pipeline and the air inlet pipeline are arranged in a serpentine shape, and the return water pipeline and the air inlet pipeline are arranged at intervals.

[0012] Further, the return water pipeline and the air inlet pipeline are arranged in a serpentine shape, and the return water pipeline and the air inlet pipeline are arranged at intervals.

[0013] Further, the return water pipeline and the air inlet pipeline are arranged in a serpentine shape, and the return water pipeline and the air inlet pipeline are arranged at intervals.

[0014] Further, the return water pipeline and the air inlet pipeline are arranged in a serpentine shape, and the return water pipeline and the air inlet pipeline are arranged at intervals.

[0015] Further, the return water pipeline and the air inlet pipeline are arranged in a serpentine shape, and the return water pipeline and the air inlet pipeline are arranged at intervals.

[0016] The utility model discloses a kind of greenhouse bodies, which can effectively cool the interior of greenhouse body and guarantee the stability and persistence of its cooling, meet the storage needs of goods and the corresponding plant planting needs in high-temperature and high-humidity environment area in greenhouse, while guaranteeing that there is new air circulation in the interior of greenhouse body continuously, ensure the health degree and oxygen content of air in the interior of greenhouse body, promote the healthy growth of plant. Relative to the mode of setting radiation wallboard, setting radiation ceiling can supply more uniform cold to the interior of greenhouse body, guarantee the temperature uniformity of different positions in the same height range in planting area, more conducive to the planting of plant.

[0017] The utility model discloses a double radiation cooling room greenhouse system, which combines a sky radiation refrigeration module with a radiation ceiling and a fresh air handling unit, and the sky radiation refrigeration module and the radiation ceiling form double radiation refrigeration. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structural schematic diagram of the utility model double radiation cooling room greenhouse system.

[0019] Figure 2 It is the longitudinal section structure schematic diagram of the utility model sky radiation refrigeration module.

[0020] Figure 3 It is the utility model Figure 2 The A place enlarged view in.

[0021] Figure 4 It is the utility model backwater pipeline and air inlet pipeline on the sky radiation refrigeration module arrangement schematic diagram.

[0022] In the drawing: 1, greenhouse body;2, sky radiation refrigeration module;201, sky radiation refrigeration board;2011, heat conducting material layer;2012, solar radiation reflection layer;2013, infrared radiation emission layer;202, phase change energy storage unit;203, heat preservation layer;3, radiation ceiling;301, cold water pipeline;4, cold water unit;5, fresh air handling unit;6, backwater pipeline;7, air inlet pipeline;8, indoor air outlet;9, indoor air outlet;10, air outlet pipeline;11, water supply pipeline;12, cooling tower. DETAILED DESCRIPTION

[0023] For example, Figures 1-4As shown, the utility model provides a kind of double radiation cold room greenhouse system, including greenhouse body 1, sky radiation refrigeration module 2, radiation ceiling 3, cold water set 4 and fresh air unit 5.Wherein,sky radiation refrigeration is based on the characteristics of thermal radiation, and refrigeration is realized by the heat radiation of object surface to low-temperature environment (such as space).Since the radiation energy temperature of earth's atmosphere to outer space is far lower than the temperature of object surface, so object surface will pass through the process of heat radiation and transfer heat to earth's atmosphere, to achieve the effect of refrigeration.Fresh air of outdoor is extracted by fresh air unit 5 after dust removal, dehumidification, cooling and other treatments, and sent to indoor by fan, and dust removal is carried out by filter screen assembly in fresh air unit 5, dehumidification is carried out by dehumidifier arranged in fresh air unit 5, and cooling is carried out by surface cooler arranged in fresh air unit 5, and the specific structure of fresh air unit 5 and cold water set 4 is prior art, which will not be described here.

[0024] Radiation ceiling 3 is a metal radiation plate combined with tube plate as radiation source, adopts water as medium, and is arranged in the form of ceiling.The radiation ceiling 3 is arranged on the inner side of the top of greenhouse body 1, and cold water pipeline 301 is arranged in the radiation ceiling 3, the water inlet of cold water pipeline 301 is the water inlet of radiation plate, and the water outlet of cold water pipeline 301 is the water outlet of radiation ceiling 3.In the utility model, the water outlet of radiation ceiling 3 is connected with the water inlet of cold water set 4 through return water pipeline 6, the water inlet of radiation ceiling 3 is connected with the water outlet of cold water set 4, and the water inlet of radiation ceiling 3 and the water outlet of cold water set 4 are connected through water supply pipeline 11, and water pump is arranged on water supply pipeline 11 to provide power for the circulation of water.Wherein, in order to guarantee the coverage area of radiation cooling capacity, cold water pipeline 301 is preferably arranged in the form of snake in radiation ceiling 3.

[0025] Fresh air inlet of fresh air unit 5 is provided with air inlet pipeline 7, and external fresh air enters fresh air unit 5 through fresh air pipeline.

[0026] Return water pipeline 6 and air inlet pipeline 7 are arranged on sky radiation refrigeration module 2, and water flowing to cold water set 4 along return water pipeline 6 and fresh air flowing to fresh air unit 5 along air inlet pipeline 7 are all pre-cooled by sky radiation refrigeration module 2.

[0027] The double-radiation cold room greenhouse system provided by the utility model, through the setting of the radiant ceiling 3 and the fresh air handling unit 5, the interior of the greenhouse body 1 can be effectively cooled and the stability and continuity of cooling can be ensured, the storage requirement of the greenhouse for goods and the corresponding plant planting requirement in the high-temperature and high-humidity environment area can be met, meanwhile, the continuous fresh air circulation in the interior of the greenhouse body 1 is ensured, the health degree and oxygen content of the air in the interior of the greenhouse body 1 are ensured, and the healthy growth of plants is promoted. Compared with the mode of setting the radiant wall panel, the radiant ceiling 3 can supply more uniform cold quantity to the lower part of the interior of the greenhouse body 1, the temperature uniformity of different positions in the same height range of the planting area is ensured, and the planting of plants is more beneficial.

[0028] The utility model utilizes the combination of the sky radiation refrigeration module 2, the radiant ceiling 3 and the fresh air handling unit 5, the sky radiation refrigeration module 2 and the radiant ceiling 3 form double radiation refrigeration, before the cold water handling unit 4 handles the cold water return water and the fresh air handling unit 5 handles the fresh air, the sky radiation refrigeration module 2 is utilized to precool the cold water return water and the fresh air, the energy consumption of the cold water handling unit 4 and the fresh air handling unit 5 can be reduced, and due to the advantage of the sky radiation refrigeration, the precooling process also does not need to rely on external energy, therefore, on the basis of meeting the continuous, stable and effective cooling in the interior of the greenhouse body 1 and the supply of fresh air, the energy consumption of the whole refrigeration is greatly reduced, and the utility model is more environmentally friendly and energy-saving.

[0029] In the utility model, one end of the return water pipeline 6 connecting the water inlet of the cold water handling unit 4 and one end of the air inlet pipeline 7 connecting the fresh air inlet of the fresh air handling unit 5 are all provided with temperature detection modules. The temperature detection modules, the cold water handling unit 4 and the fresh air handling unit 5 are all electrically connected with the controller and work coordinately through the controller. During the working period, the temperature detection module on the return water pipeline 6 is used to detect the temperature of the cold water at one end of the return water pipeline 6 connecting the water inlet of the cold water handling unit 4 in real time, when the temperature detected by the temperature detection module is lower than the preset temperature, the return water is cooled again through the cold water handling unit 4, so that the cold water input into the interior of the radiant ceiling 3 meets the corresponding temperature requirement, when the temperature detected by the temperature detection module is not lower than the preset temperature. Similarly, the temperature detection module on the air inlet pipeline 7 is used to detect the temperature of the fresh air at one end of the air inlet pipeline 7 connecting the fresh air inlet of the fresh air handling unit 5 in real time, when the temperature detected by the temperature detection module is lower than the preset temperature, the fresh air is cooled again through the fresh air handling unit 5, so that the fresh air input into the interior of the greenhouse body 1 meets the corresponding temperature requirement. When the temperature detected by the temperature detection module is not lower than the preset temperature, the fresh air is not cooled again through the fresh air handling unit 5, the cold water handling unit 4 only allows the cold water to flow normally, and the fresh air handling unit 5 only allows the fresh air to flow normally. The temperature detection module can be a temperature sensor or other temperature detection element. The working medium of the condenser in the cold water handling unit 4 is cooled by the cooling tower 12.

[0030] The sky radiation refrigeration module 2 comprises a sky radiation refrigeration plate 201 and a phase change energy storage unit 202, the sky radiation refrigeration plate 201 and the phase change energy storage unit 202 are attached, and the water return pipeline 6 and the air inlet pipeline 7 are arranged on the sky radiation refrigeration plate 201 and between the phase change energy storage unit 202.

[0031] During the working period such as a sunny day, the sky radiation refrigeration plate 201 can radiate energy to outer space through the 'atmospheric window' in the form of heat radiation, so that the cooling precooling of the return water and fresh air is realized with zero energy consumption. During the night and standby period, the sky radiation refrigeration plate 201 is used for refrigeration, and the cold energy is stored through the phase change energy storage unit 202. During the working period, the real-time refrigeration and the cold energy stored in the phase change energy storage unit 202 are used for cooling and precooling of fresh air and return water, so that the condensation temperature in the subsequent refrigeration cycle is effectively reduced, and the refrigeration efficiency is improved. By combining the sky radiation refrigeration and the phase change cold storage, the cold energy prepared by the sky radiation refrigeration during the long shutdown period or the intermittent standby period is stored, the system is buffered in the time scale, the precooling efficiency of the sky radiation refrigeration is improved, and the refrigeration efficiency and the stability of the whole system are improved.

[0032] The sky radiation refrigeration plate 201 comprises a heat-conducting material layer 2011, a solar radiation reflection layer 2012 and an infrared radiation emission layer 2013 arranged in sequence, and the phase change energy storage unit 202 is attached to the side, away from the solar radiation reflection layer 2012 and the infrared radiation emission layer 2013, of the heat-conducting material layer 2011. The heat-conducting material is preferably a metal material, has good heat conductivity and certain strength, and is preferably an aluminum alloy material. The solar radiation reflection layer 2012 is selected from a silver coating layer or an aluminum coating layer with high emissivity, and the infrared radiation emission layer 2013 is selected from a transparent epoxy resin with high radiation reflectivity.

[0033] The sky radiation refrigeration module 2 further comprises an insulation layer 203, the insulation layer 203 is arranged to wrap the side surface of the sky radiation refrigeration plate 201, the side surface of the phase change energy storage unit 202 and the bottom of the phase change energy storage unit 202, so as to reduce the outward emission of cold energy of the sky radiation refrigeration module 2 and better store the cold energy. A frame can be arranged on the outer surface or the inner surface of the insulation layer 203 to guarantee the overall structural strength of the sky radiation refrigeration module 2.

[0034] In the utility model, the sky radiation refrigeration module 2 is preferably arranged at the top of the greenhouse body 1, and does not occupy the space outside the greenhouse body 1.

[0035] In the utility model, the backwater pipeline 6 and the air inlet pipeline 7 are embedded on the phase change energy storage unit 202 and are attached to the side of the heat conducting material layer 2011 which is away from the solar radiation reflection layer 2012 and the infrared radiation emission layer 2013, and the backwater pipeline 6 and the air inlet pipeline 7 are arranged at intervals, so that the backwater pipeline 6 and the air inlet pipeline 7 have corresponding intervals, thereby ensuring that the contact area of the backwater pipeline 6, the air inlet pipeline 7 and the phase change energy storage unit 202, the heat conducting material layer 2011 is larger.

[0036] In one setting mode of the utility model, the backwater pipeline 6 and the air inlet pipeline 7 are arranged in a serpentine shape, thereby increasing the heat exchange effect of the backwater and fresh air and the sky radiation refrigeration module 2, and under this arrangement mode, the backwater pipeline 6 and the air inlet pipeline 7 can be arranged in only one row.

[0037] The greenhouse body 1 has an indoor air outlet 8 and an indoor air outlet 9, the indoor air outlet 9 is connected with the return air inlet of the corresponding fresh air unit 5 through an air pipe, the return air in the interior of the greenhouse body 1 enters the fresh air unit 5 through the indoor air outlet 9 and is discharged to the outside of the greenhouse along the return air outlet of the fresh air unit 5. The indoor air outlet 8 is connected with the fresh air outlet of the fresh air unit 5 through a fresh air pipeline, the fresh air discharged along the fresh air unit 5 enters the interior of the greenhouse body 1 through the indoor air outlet 8, and the indoor air outlet 8 has two or more than two, the two or more than two indoor air outlets 8 are distributed at intervals and are connected with the fresh air outlet of the corresponding fresh air unit 5 through an air pipe, so as to improve the uniformity of the fresh air sent into the interior of the greenhouse body 1.

[0038] In one setting mode of the utility model, the fresh air unit 5 is arranged outside the greenhouse body 1. In another setting mode of the utility model, the fresh air unit 5 is located inside the greenhouse body 1 and is arranged on the radiation ceiling 3, and in this setting mode, the return air outlet of the fresh air unit 5 is connected with an air outlet pipeline 10, and the air outlet pipeline 10 extends to the outside of the greenhouse body 1, so as to discharge air to the outside of the greenhouse body 1.

[0039] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of protection of this application is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments of this application as described above, which are not provided in detail for the sake of brevity.

[0040] One or more embodiments in this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this application should be included within the protection scope of this application.

Claims

1. A double radiation cold chamber greenhouse system, characterized in that, It includes the greenhouse body (1), the sky radiation cooling module (2), the radiation ceiling (3), the chiller unit (4) and the fresh air unit (5); The radiant ceiling (3) is installed on the inner side of the top of the greenhouse body (1). The water inlet of the radiant ceiling (3) is connected to the water outlet of the chiller unit (4). The water outlet of the radiant ceiling (3) is connected to the water inlet of the chiller unit (4) through the return water pipe (6). The fresh air unit (5) is used to input fresh air into the greenhouse body (1) and exhaust the return air inside the greenhouse body (1) to the outside of the greenhouse body (1). The fresh air inlet of the fresh air unit (5) is provided with an air inlet pipe (7). The return water pipe (6) and the air inlet pipe (7) are both installed on the sky radiation cooling module (2). The water flowing along the return water pipe (6) to the chiller unit (4) and the fresh air flowing along the air inlet pipe (7) to the fresh air unit (5) are both pre-cooled by the sky radiation cooling module (2).

2. The double radiation cold room greenhouse system of claim 1, wherein, The sky radiation cooling module (2) includes a sky radiation cooling plate (201) and a phase change energy storage unit (202). The sky radiation cooling plate (201) includes a heat-conducting material layer (2011), a solar radiation reflection layer (2012), and an infrared radiation emission layer (2013) arranged sequentially. The phase change energy storage unit (202) is attached to the side of the heat-conducting material layer (2011) that is away from the solar radiation reflection layer (2012) and the infrared radiation emission layer (2013). The return water pipe (6) and the air inlet pipe (7) are embedded in the sky radiation cooling plate (201) and attached to the side of the heat-conducting material layer (2011) that is away from the solar radiation reflection layer (2012) and the infrared radiation emission layer (2013).

3. The double radiation cold room greenhouse system of claim 2, wherein, The sky radiation cooling module (2) also includes an insulation layer (203), which is provided to cover the side of the sky radiation cooling plate (201), the side of the phase change energy storage unit (202), and the bottom of the phase change energy storage unit (202).

4. The double radiation cold chamber greenhouse system according to any one of claims 1-3, characterized in that, The sky radiation cooling module (2) is installed on the top of the greenhouse body (1).

5. The double radiation cold chamber greenhouse system according to any one of claims 1-3, characterized in that, The return water pipe (6) and the air inlet pipe (7) are arranged in a serpentine pattern, and the return water pipe (6) and the air inlet pipe (7) are spaced apart.

6. The double radiation cold room greenhouse system according to any one of claims 1-3, characterized in that, There are two or more return water pipes (6) and air inlet pipes (7), and the two or more return water pipes (6) and the two or more air inlet pipes (7) are spaced apart.

7. The double radiation cold room greenhouse system according to any one of claims 1-3, characterized in that, Temperature detection modules are installed at one end of the return water pipe (6) connected to the water inlet of the chiller unit (4) and at one end of the air inlet pipe (7) connected to the fresh air inlet of the fresh air unit (5).

8. The double radiation cold room greenhouse system according to any one of claims 1-3, characterized in that, The greenhouse body (1) has an indoor air outlet (8) and an indoor air exhaust outlet (9). The indoor air outlet (8) is connected to the fresh air outlet of the fresh air unit (5). The fresh air discharged from the fresh air unit (5) enters the interior of the greenhouse body (1) through the indoor air outlet (8). There are two or more indoor air outlets (8). The two or more indoor air outlets (8) are distributed at intervals and are connected to the fresh air outlet of the fresh air unit (5). The indoor air exhaust outlet (9) is connected to the return air inlet of the fresh air unit (5).

9. The double radiation cold room greenhouse system of claim 8, wherein, The fresh air unit (5) is arranged on the radiation ceiling (3), and the return air outlet of the fresh air unit (5) is connected with the exhaust air pipeline (10), and the exhaust air pipeline (10) extends to the outside of the greenhouse body (1).

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