CN215935687U - Wall heat storage dehumidification anti-condensation ventilation system for sunlight greenhouse - Google Patents
Wall heat storage dehumidification anti-condensation ventilation system for sunlight greenhouse Download PDFInfo
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- CN215935687U CN215935687U CN202121174988.5U CN202121174988U CN215935687U CN 215935687 U CN215935687 U CN 215935687U CN 202121174988 U CN202121174988 U CN 202121174988U CN 215935687 U CN215935687 U CN 215935687U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
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Abstract
The utility model provides a wall heat storage dehumidification anti-condensation ventilation system for a sunlight greenhouse, which comprises a jet fan, wherein an air outlet of the jet fan is attached to the bottom of the inner surface of a greenhouse film, an air inlet pipe is arranged in the sunlight greenhouse wall and communicated with a heat exchange pipe, an air inlet of the air inlet pipe is attached to the inner surface of the greenhouse film, an air outlet is arranged below the heat exchange pipe and attached to the ground surface, an axial flow fan is arranged between the air inlet and the air outlet in the heat exchange pipe, and a drain pipe is arranged at the bottom end of the heat exchange pipe. The system utilizes the air in the sunlight greenhouse to adhere and supply air to the inner surface of the greenhouse to improve the temperature of the inner surface, prevent the inner surface from dewing, improve the transmittance of sunlight and improve the quality of crops. The heat in the daytime is stored in the greenhouse wall body, and is released at night to meet the temperature requirement of the greenhouse at night, so that the temperature reduction and dehumidification of the air in the greenhouse by the rear wall are realized, and the storage and recovery of the heat in the daytime are realized.
Description
Technical Field
The utility model belongs to the field of sunlight greenhouse ventilation air conditioners, relates to an air conditioning ventilation system, and particularly relates to an air conditioning system based on wall heat storage dehumidification and outdoor fresh air introduction.
Background
With the continuous enlargement of agricultural production scale and the continuous popularization of sunlight greenhouses, the number of sunlight greenhouses is continuously increased. The growth of plants in a greenhouse is influenced by different environmental factors, the growth and the maturity of the fruits of the plants are in inseparable connection with the irradiation of sunlight, and therefore, the transmittance of the sunlight is an important index for measuring a sunlight greenhouse, and the transmittance directly influences the growth of the plants and the yield of the fruits. The ground research shows that under the condition of consistent greenhouse film materials, the difference value of indoor and outdoor solar radiation has large fluctuation in the daytime, and the difference value is shown in figure 1, which is caused by the fact that the light transmittance of the greenhouse film is reduced due to dew condensation on the inner surface of the greenhouse film. Because the temperature difference between the inside and the outside of the greenhouse is large, and the humidity of air in the greenhouse is large, water dew is easily formed near the greenhouse film, on one hand, the transmittance of sunlight in the greenhouse can be influenced when the water dew is condensed more, so that the normal growth of plants is influenced, the development and the maturity of plant fruits are not facilitated, and the crop yield is further influenced; on the other hand, the long-time condensation increases the probability of crop infection and disease transmission, and water drops generated by condensation drop to injure leaves, so that plants are infected with diseases. According to investigation, organic matters required by plant growth are all synthesized by photosynthesis, the dry weight of the organic matters accounts for more than 90% of the dry weight of roots, stems, leaves and fruits of the plants, and the intensity of solar illumination has great influence on the quality, color and mature period of the fruits and can also influence the photosynthesis, respiration and transpiration of the plants. Therefore, ensuring the sunlight transmittance of the sunlight greenhouse is an important factor for ensuring the yield and quality of crops. In order to ensure that the transmission of sunlight is not affected by condensation, a commonly adopted method is to use anti-condensation quilt materials or spray anti-condensation agents on the inner surface of a sunlight greenhouse, but both methods have timeliness, and after the sunlight greenhouse fails, the anti-condensation agents need to be sprayed again, so that the operation is complicated.
The on-site test and research shows that the temperature of the sunlight greenhouse is higher in the daytime, particularly the temperature in the noon is generally higher than the proper temperature required by plant growth, so that the temperature in the greenhouse needs to be reduced, a part of the film of the greenhouse is generally opened for ventilation, but heat in the greenhouse is wasted in the period, the normal growth of plants is influenced by the sudden invasion of outdoor cold air, and the yield of crops is reduced. In addition, the temperature of the greenhouse is low at night, and heat needs to be supplied to the greenhouse at night sometimes in order to ensure the normal growth of plants.
Disclosure of Invention
Aiming at the defects and shortcomings of the prior art, the utility model provides a wall heat-storage dehumidification anti-condensation ventilation system for a sunlight greenhouse. The heat in the daytime is stored in the greenhouse wall body, and is released at night to ensure the temperature requirement of the greenhouse at night, so that the temperature reduction and dehumidification of the air in the greenhouse by the rear wall are realized, and the storage and recovery of the heat in the daytime are realized; the outdoor air and the indoor air are mixed and then are sent into the greenhouse, so that the freezing injury to plants caused by directly introducing the outdoor air is effectively prevented, the requirement on an additional heat source is effectively reduced, and the method has higher economic benefit and social benefit.
The utility model provides a wall body heat accumulation dehumidification antisweat ventilation system for sunlight greenhouse, includes the jet fan, the air outlet of jet fan is attached in the bottom of greenhouse canopy membrane internal surface, is provided with the air-supply line in the sunlight greenhouse wall body, the air-supply line intercommunication has an at least heat exchange tube, the air intake of air-supply line is attached in greenhouse canopy membrane internal surface, the heat exchange tube below is provided with the air outlet, the air outlet is attached in the earth's surface, be provided with axial fan between inherent air intake of heat exchange tube and the air outlet, the bottom of heat exchange tube is provided with the drain pipe, the lower extreme of drain pipe inserts below the earth's surface.
Preferably, the top end of the heat exchange tube protrudes out of the greenhouse, and an electric hood is arranged at the part of the heat exchange tube, which is positioned outside the greenhouse.
Preferably, an indoor temperature sensor and CO are arranged in the greenhouse film2The greenhouse film comprises a sensor, wherein an outdoor temperature sensor is arranged outside the greenhouse film, a wall temperature sensor, an indoor temperature sensor, an outdoor temperature sensor and CO are arranged in the wall body of the greenhouse2The sensor and the wall temperature sensor are electrically connected with the controller and used for transmitting temperature signals to the controller, and the controller is used for controlling the start and stop of the jet fan, the axial flow fan and the electric hood.
Preferably, a check valve is arranged in the drain pipe.
Preferably, the outer surface of the greenhouse wall is provided with a heat insulation layer.
The utility model has the beneficial effects that:
1. according to the utility model, the jet fan is arranged at the bottom of the inner surface of the greenhouse, the inner surface of the greenhouse is subjected to attached air supply in a side air supply mode, the automatic start and stop of the device are realized by monitoring the dew point temperature, and the device is arranged at the lower part of the sunlight greenhouse, so that the sunlight cannot be shielded to influence the growth of plants.
2. The utility model arranges an air pipe in the wall of the sunlight greenhouse for dehumidifying the gas in the greenhouse and exchanging heat with the wall, the air pipe is arranged from top to bottom, the top of the air pipe is led to the outside, an electric air cap is arranged at the top, the upper part and the lower part of the air pipe are respectively provided with a branch pipe for exhausting air and supplying air to the inside of the greenhouse, an axial fan is arranged in the air pipe, the branch pipe at the upper part extracts the high-temperature gas in the greenhouse, the high-temperature gas is returned to the greenhouse from the branch pipe at the lower part through the heat exchange of the wall, when the heat exchange quantity with the wall is not enough to cool the indoor air, the electric air cap at the top of the air pipe is opened, the introduced outdoor fresh air is mixed with the gas in the greenhouse, the outdoor fresh air is heated by the indoor air, the freezing damage to the plants can not be caused, and the purposes of cooling and dehumidifying can be achieved.
3. Setting CO indoors2Sensor, as CO in greenhouse2When the concentration is too high or too low, the electric blast cap can be opened, and outdoor fresh air is introduced in the same way.
4. The drain pipe is arranged on the lower portion of the air pipe and embedded into soil, and indoor air can form condensation and dewing through cooling and dehumidification in the air pipe, so that moisture is directly provided for the soil. The check valve is arranged in the drain pipe to prevent the surface humidity from flowing back.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a graph showing the variation of the intensity of solar radiation indoors and outdoors;
FIG. 2 is a front view of the present invention;
FIG. 3 is an enlarged view of A in FIG. 2;
FIG. 4 is an enlarged view of B in FIG. 2;
FIG. 5 is an enlarged view of C in FIG. 2;
FIG. 6 is a top view of the present invention;
FIG. 7 is a diagram of an air supply module of the sunlight greenhouse;
1-jet flow fan, 2-indoor temperature sensor, 3-outdoor temperature sensor, 4-blast pipe, 5-thermal insulation layer, 6-electric hood, 7-axial flow fan, 8-heat exchange air pipe, 9-air inlet branch pipe, 10-air outlet branch pipe, 11-check valve, 12-controller, 13-drain pipe, 14-greenhouse wall, 15-wall temperature sensor, 16-CO2A concentration sensor.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present invention, it is to be understood that the terms "inner", "outer", "left" and "right" indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
The utility model discloses a wall heat-storage dehumidification anti-condensation ventilation system for a sunlight greenhouse as shown in figures 2-7, which comprises a jet fan 1, wherein the jet fan is arranged at the lowest part of the inner surface of a greenhouse film, an air outlet is tangent to the inner surface of the greenhouse film, an outdoor temperature sensor 3 is arranged outside a shell and extends out of the greenhouse, an indoor temperature sensor 2 is arranged inside the greenhouse, an air supply pipe 4 is arranged above the jet fan, a greenhouse film air supply part consisting of the air supply fan 1, the outdoor temperature sensor 3, the indoor temperature sensor 2 and the air supply pipe 4 is arranged below the greenhouse film of the greenhouse to supply air under the greenhouse film, the jet fan 1, the outdoor temperature sensor 3 and the indoor temperature sensor 2 are electrically connected with a controller 12, a vertical wall internal heat exchange air pipe 8 is arranged in the wall, the upper part of the air pipe leads to the top of the wall, an electric hood 6 is arranged at the top of the greenhouse, the electric hood is electrically connected with a controller 12, an axial flow fan 7 is arranged in a heat exchange air pipe for air draft and air supply in the air pipe, at least one wall body inner air inlet branch pipe 9 leading to the inside of the greenhouse is arranged in the greenhouse above a wall body inner heat exchange air pipe 8, at least one wall body inner air outlet branch pipe 10 leading to the inside of the greenhouse is arranged below the heat exchange air pipe and has a gradient of 1% so as to facilitate outflow of condensed water, at least one vertical drain pipe 13 is arranged at the tail end of the wall body inner air outlet branch pipe 10 and is led into soil underground of the greenhouse, a check valve 11 is arranged in the drain pipe 13, a wall body temperature sensor 15 is arranged at a position close to the heat exchange air pipe in the wall body, and a heat insulation layer 5 is arranged outside the wall body so as to ensure the heat storage capacity of the wall body.
The working principle and the working process of the sunlight greenhouse wall heat-storage dehumidification anti-condensation ventilation composite system are described in detail below with reference to the accompanying drawings 2-6: firstly fix air supply arrangement installation in sunlight greenhouse bottom under this greenhouse canopy membrane, temperature signal transmission to controller 12 when outdoor temperature sensor 3 and indoor temperature sensor 2 detect, controller 12 contrast temperature signal, when the outside temperature of greenhouse is less than indoor air dew point temperature, controller 12 starts efflux fan 1, improve greenhouse canopy membrane internal wall face temperature through the inside air in sunlight greenhouse, and destroy the growing environment of dewing, work before greenhouse canopy membrane inner wall dewing, reach the mesh of preventing sunlight greenhouse upper wall dewing. When controller 12 detects that the temperature in the greenhouse exceeds the threshold value of settlement, start axial fan 1, extract the high-temperature gas in the greenhouse and get into the wall body, with the wall body heat transfer, the high-temperature gas in the wall body cooling greenhouse to microthermal interior wall can make unnecessary vapor condense in the gas, plays the effect of dehumidification, and the condensation dewfall passes through the drain pipe and discharges. When the controller 12 receives a signal of the temperature sensor 15 in the wall body and detects that the temperature of the wall body is higher than the dew point temperature of the gas in the greenhouse, the controller 12 controls the electric blast cap 6 to be opened, outdoor fresh air is introduced, the fresh air and the indoor air are mixed, the indoor air is cooled and dehumidified through mixing, and the outdoor fresh air is heated and heated. Greenhouse CO2The signal from the concentration sensor 16 is transmitted to the controller 12 when the CO is present2When the concentration exceeds a set threshold value, the controller 12 opens the electric hood 6 to introduce outdoor fresh air, and the gas environment in the greenhouse is improved.
The design is provided with an automatic control device to control the starting and stopping of the fan, the temperature of the inner surface of the greenhouse film can be approximately considered to be equal to the temperature of the outer surface of the greenhouse film due to the fact that the greenhouse film is thin, the temperature of the outer surface of the greenhouse film is equal to the temperature of outdoor air, and in order to reduce the influence on sunlight transmission, the temperature of the inner surface of the greenhouse film is replaced by measuring the outdoor temperature, and an air dew point temperature sensor is arranged in the sunlight greenhouse. The controller responds by receiving indoor and outdoor temperature signals, and when the outdoor temperature is lower than the dew point temperature of air in the greenhouse, the air supply fan is started; when in useAnd when the outdoor temperature is higher than the dew point temperature, the air supply fan is closed. The wall heat exchange part receives indoor and outdoor temperature and CO through the controller2The concentration control electric hood and the axial flow fan are started and stopped, so that the purposes of storing heat in the wall body, reducing the temperature and humidity of indoor air and introducing fresh air from the outdoor are achieved. In order to improve the heat exchange effect, the distance between two adjacent heat exchange air pipes in the wall body is within the range of 1-2 meters, and the maximum distance is not more than two meters. The number of the fans of the air supply device under the greenhouse film can be selected according to the actual greenhouse length, and the central distance between the air supply outlets on the air supply pipe is 1-2 m, so that the air supply effect can be ensured.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a wall body heat accumulation dehumidification antisweat ventilation system for sunlight greenhouse, a serial communication port, including the jet fan, the air outlet of jet fan is attached in the bottom of greenhouse canopy membrane internal surface, is provided with the air-supply line in the sunlight greenhouse wall body, the air-supply line intercommunication has an at least heat exchange tube, the air intake of air-supply line is attached in greenhouse canopy membrane internal surface, the heat exchange tube below is provided with the air outlet, the air outlet is attached in the earth's surface, be provided with axial fan between inherent air intake of heat exchange tube and the air outlet, the bottom of heat exchange tube is provided with the drain pipe, the lower extreme of drain pipe inserts below the earth's surface.
2. The wall body heat accumulation, dehumidification, dewing prevention and ventilation system for the sunlight greenhouse as claimed in claim 1, wherein the top end of the heat exchange tube protrudes out of the greenhouse, and the part of the heat exchange tube outside the greenhouse is provided with an electric hood.
3. The wall body heat accumulation, dehumidification and anti-condensation ventilation system for the sunlight greenhouse as claimed in claim 1, wherein an indoor temperature sensor and CO are arranged in the greenhouse film2The greenhouse film comprises a sensor, wherein an outdoor temperature sensor is arranged outside the greenhouse film, a wall temperature sensor, an indoor temperature sensor, an outdoor temperature sensor and CO are arranged in the wall body of the greenhouse2The sensor and the wall temperature sensor are electrically connected with the controller and used for transmitting temperature signals to the controller, and the controller is used for controlling the start and stop of the jet fan, the axial flow fan and the electric hood.
4. The wall body heat accumulation, dehumidification and anti-condensation ventilation system for the sunlight greenhouse as claimed in claim 1, wherein a check valve is arranged in the drain pipe.
5. The wall heat-storage dehumidification anti-condensation ventilation system for the sunlight greenhouse as claimed in claim 1, wherein the greenhouse wall is externally provided with a heat-insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121174988.5U CN215935687U (en) | 2021-05-28 | 2021-05-28 | Wall heat storage dehumidification anti-condensation ventilation system for sunlight greenhouse |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121174988.5U CN215935687U (en) | 2021-05-28 | 2021-05-28 | Wall heat storage dehumidification anti-condensation ventilation system for sunlight greenhouse |
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| CN215935687U true CN215935687U (en) | 2022-03-04 |
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| CN202121174988.5U Active CN215935687U (en) | 2021-05-28 | 2021-05-28 | Wall heat storage dehumidification anti-condensation ventilation system for sunlight greenhouse |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115956498A (en) * | 2023-01-04 | 2023-04-14 | 中国农业科学院都市农业研究所 | Three-dimensional cultivation system, cultivation method and dehumidification device |
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2021
- 2021-05-28 CN CN202121174988.5U patent/CN215935687U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115956498A (en) * | 2023-01-04 | 2023-04-14 | 中国农业科学院都市农业研究所 | Three-dimensional cultivation system, cultivation method and dehumidification device |
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