Greenhouse ventilation device

Abstract

The utility model discloses a greenhouse ventilation device which comprises a temperature sensor and a cold and hot air blower, the cold and hot air blower is arranged on one side of a greenhouse, ventilation holes are formed in the two sides of the top of the greenhouse, a movable ventilation door is arranged above the ventilation holes in the greenhouse, the movable ventilation door is connected with a driving mechanism, and the driving mechanism is connected with the temperature sensor. The temperature sensor is electrically connected with the cold and hot air blower and the driving mechanism respectively; the temperature sensor is electrically connected with the cold and hot air fan and the driving mechanism, the temperature sensor can detect the temperature in the greenhouse in real time and feed back the temperature information to the cold and hot air fan and the driving mechanism, and when the temperature in the greenhouse is low, the driving mechanism drives the movable ventilation door to close the ventilation open hole, so that the ventilation open hole is closed. When the temperature in the greenhouse is high, the driving mechanism drives the movable ventilation door to open the ventilation holes, the cold and hot air blower starts to blow cold air, the ventilation effect is good, and temperature control in the greenhouse can be achieved.

Description

Technical Field

[0001] This utility model belongs to the field of greenhouse technology, and in particular relates to a greenhouse ventilation device. Background Technology

[0002] Agricultural greenhouses are commonly used equipment in agricultural planting. They provide a suitable temperature environment for plants, improve the yield and efficiency of agricultural products, and enable off-season planting. When planting or grafting certain fruits and vegetables in a greenhouse, it is necessary to control the greenhouse temperature at a suitable level.

[0003] Regarding greenhouse ventilation devices, a search revealed a utility model patent with Chinese patent publication number CN206118617U that discloses a vegetable greenhouse with a ventilation device, such as... Figure 1 As shown, it includes a vegetable greenhouse a and a ventilation device. The ventilation device includes a solar panel, a wind turbine, and an exhaust fan b. The exhaust fan b is located on the upper part of the vegetable greenhouse a. When ventilation is needed, the exhaust fan is turned on to ventilate the greenhouse.

[0004] In practice, existing greenhouse ventilation devices with similar technical solutions have been found to have areas for improvement: the ventilation effect of exhaust fans installed on the greenhouse is limited due to their size; furthermore, this ventilation device is only used for ventilating and cooling the greenhouse, and cannot heat it, making its function relatively simple. Utility Model Content

[0005] In view of the shortcomings and defects in the existing technology, the purpose of this utility model is to provide a greenhouse ventilation device, which solves the problem that the exhaust fan of the existing greenhouse ventilation device is limited in size, so the ventilation effect needs to be improved, and the problem that the ventilation device is only used for ventilation and cooling of the greenhouse, but cannot heat up the greenhouse, and its function is relatively simple.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a greenhouse ventilation device for use on a greenhouse, including a temperature sensor installed inside the greenhouse, and multiple hot and cold air blowers capable of heating and cooling. The hot and cold air blowers are installed on one side of the greenhouse. A ventilation opening is provided on both sides of the top of the greenhouse, and the ventilation opening is arranged along the length of the greenhouse. Above the ventilation opening, a movable ventilation door is provided on the greenhouse to open or close the ventilation opening. The movable ventilation door is made of transparent material. Two movable ventilation doors are provided with rubber sealing strips on their adjacent sides. The movable ventilation doors are connected to a drive mechanism that drives their movement. The temperature sensor is electrically connected to the hot and cold air blowers and the drive mechanism respectively.

[0007] As a further improvement of this utility model, the driving mechanism includes an electric push rod, which is disposed on the lower side of the ventilation opening and the body of the electric push rod is fixed on the greenhouse. The telescopic rod of the electric push rod is connected to the movable ventilation door, and the movable ventilation door is slidably connected to the greenhouse.

[0008] As a further improvement of this utility model, an air distribution pipe is installed at each hot and cold air fan in the greenhouse. One end of the air distribution pipe faces the air outlet of the hot and cold air fan, and the other end extends into the greenhouse to the side away from the hot and cold air fan. Multiple air distribution holes are opened on the air distribution pipe.

[0009] As a further improvement of this utility model, the air distribution duct is provided with an air collecting hood on the side near the hot and cold air blower.

[0010] As a further improvement of this utility model, the air distribution duct is connected and fixed to the inner wall of the greenhouse by multiple connecting rods.

[0011] Compared with the prior art, this utility model has the following advantages:

[0012] 1. By setting ventilation openings at the top of the greenhouse, and installing movable ventilation doors at these openings, the greenhouse can be made semi-open when the temperature is high or ventilation is needed. This greatly improves the cooling and ventilation effect of the greenhouse. In addition, opening the ventilation openings also allows crops to better absorb sunlight, improving their growth. Furthermore, the ventilation openings can be opened on rainy days to allow rainwater to directly irrigate the crops.

[0013] By installing hot and cold air fans on the greenhouse, the cold air function of the fans can be turned on to ventilate and cool the greenhouse when the temperature is high, and the hot air function can be turned on to introduce hot air into the greenhouse when the temperature is low, thereby raising the temperature and ensuring a suitable environment in the greenhouse.

[0014] Furthermore, by electrically connecting the temperature sensor to the hot and cold air blowers and the drive mechanism, the temperature sensor can detect the temperature inside the greenhouse in real time and feed this temperature information back to the hot and cold air blowers and the drive mechanism. Specifically, when the temperature sensor detects a low temperature inside the greenhouse, the drive mechanism moves the ventilation door to close the ventilation opening, and the hot and cold air blowers begin blowing hot air. Conversely, when the temperature sensor detects a high temperature inside the greenhouse, the drive mechanism moves the ventilation door to open the ventilation opening, and the hot and cold air blowers begin blowing cold air. Overall, this ventilation device provides good ventilation and enables temperature control within the greenhouse.

[0015] 2. By installing air distribution ducts at each hot and cold air blower in the greenhouse, some of the hot or cold air from the blowers can be directed more evenly into the greenhouse, improving the overall consistency and uniformity of the temperature inside the greenhouse.

[0016] 3. By installing an air collection hood on the side of the air distribution duct near the air cooler / heater, it is convenient to guide the cold or hot air from the air cooler / heater into the air distribution duct. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the existing technology;

[0019] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0020] Figure 3 for Figure 2 Enlarged view at point A;

[0021] Figure 4 for Figure 2 Enlarged view at point B;

[0022] In the diagram: 1. Temperature sensor; 2. Greenhouse; 3. Hot and cold air blower; 4. Ventilation opening; 5. Movable ventilation door; 6. Rubber sealing strip; 7. Drive mechanism; 8. Air distribution duct; 9. Air collection hood; 10. Connecting rod; 11. Slide groove. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 2-4 The present invention will be described in further detail below. For clarity, only the structures relevant to the inventive features of the present invention are shown in the figures.

[0024] For ease of description, the coordinate system is defined as follows: Figure 2 As shown, the left and right directions are horizontal, the front and back directions are vertical, and the up and down directions are vertical.

[0025] This utility model discloses a greenhouse ventilation device. (Refer to...) Figure 2 A greenhouse ventilation device is provided for use on a greenhouse 2. It includes a temperature sensor 1, which is suspended inside the greenhouse 2. Additionally, the device includes multiple hot and cold air blowers 3 capable of heating and cooling. The hot and cold air blowers 3 are commonly used in existing technology. The hot and cold air blowers 3 are located on one side of the greenhouse 2. Figure 3As shown, a ventilation opening 4 is provided on both sides of the top of the greenhouse 2. The ventilation opening 4 is arranged along the length of the greenhouse 2. Above the ventilation opening 4, a movable ventilation door 5 is provided on the greenhouse 2, which can open or close the ventilation opening 4. The movable ventilation door 5 is made of transparent material. Both movable ventilation doors 5 are provided with rubber sealing strips 6 on their adjacent sides. When the two movable ventilation doors 5 close the ventilation opening 4, that is, when the two movable ventilation doors 5 are close to each other, the rubber sealing strips 6 prevent air leakage. The movable ventilation door 5 is connected to a drive mechanism 7 that drives its movement. In this embodiment, the drive mechanism 7 includes an electric push rod. The electric push rod is arranged below the ventilation opening, and the body of the electric push rod is fixed on the greenhouse 2. The telescopic rod of the electric push rod is connected to the movable ventilation door 5. The movable ventilation door 5 is slidably connected to the greenhouse 2. Specifically, a sliding groove 11 can be provided on the greenhouse 2, and the door frame of the movable ventilation door 5 is slidably connected to the sliding groove 11. The temperature sensor 1 is electrically connected to the hot and cold air blower 3 and the drive mechanism 7 respectively. That is, the start-up of the temperature sensor 1 to the hot and cold air blower 3 and the drive mechanism 7 can be controlled by a commonly used PLC control program in the prior art, which improves the automatic control function. In addition, the drive mechanism 7 can also be started independently, which makes it convenient to control the movable ventilation door 5 independently.

[0026] In addition, such as Figure 2 and Figure 4 As shown, each hot and cold air fan 3 in the greenhouse 2 is equipped with a distribution duct 8, which is connected and fixed to the inner wall of the greenhouse 2 by multiple connecting rods 10. One end of the distribution duct 8 faces the air outlet of the hot and cold air fan 3, and the other end extends into the greenhouse away from the hot and cold air fan 3. Multiple distribution holes are provided on the distribution duct 8. The distribution duct 8 can guide some of the hot or cold air from the hot and cold air fan 3 more evenly into the greenhouse 2, improving the overall temperature consistency and uniformity within the greenhouse 2. In addition, an air collecting hood 9 is provided on the side of the distribution duct 8 near the hot and cold air fan 3 to facilitate the guidance of the cold or hot air from the hot and cold air fan 3 into the distribution duct 8.

[0027] This invention features ventilation openings at the top of a greenhouse, with movable ventilation doors at these openings. When the greenhouse temperature is high or ventilation is needed, the ventilation openings can be opened, making the greenhouse semi-open and significantly improving cooling and ventilation. Furthermore, opening the ventilation openings allows crops to better absorb sunlight, improving their growth. Additionally, the ventilation openings can be opened during rainy days to allow rainwater to directly irrigate the crops.

[0028] By installing hot and cold air fans on the greenhouse, the cold air function of the fans can be turned on to ventilate and cool the greenhouse when the temperature is high, and the hot air function can be turned on to introduce hot air into the greenhouse when the temperature is low, thereby raising the temperature and ensuring a suitable environment in the greenhouse.

[0029] Furthermore, by electrically connecting the temperature sensor to the hot and cold air blowers and the drive mechanism, the temperature sensor can detect the temperature inside the greenhouse in real time and feed this temperature information back to the hot and cold air blowers and the drive mechanism. Specifically, when the temperature sensor detects a low temperature inside the greenhouse, the drive mechanism moves the ventilation door to close the ventilation opening, and the hot and cold air blowers begin blowing hot air. Conversely, when the temperature sensor detects a high temperature inside the greenhouse, the drive mechanism moves the ventilation door to open the ventilation opening, and the hot and cold air blowers begin blowing cold air. Overall, this ventilation device provides good ventilation and enables temperature control within the greenhouse.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. It should be understood that the specific embodiments described herein are only for understanding this utility model and are not intended to limit this utility model. All other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

Claims

1. A greenhouse ventilation device, used in a greenhouse, comprising a temperature sensor installed inside the greenhouse, characterized in that: It also includes multiple hot and cold air blowers capable of heating and cooling, which are installed on one side of the greenhouse. Each side of the top of the greenhouse has a ventilation opening, which is set along the length of the greenhouse. Above the ventilation opening is a movable ventilation door that can open or close the ventilation opening. The movable ventilation door is made of transparent material. Both movable ventilation doors have rubber sealing strips on their adjacent sides. The movable ventilation doors are connected to a drive mechanism that drives them to move. The temperature sensor is electrically connected to the hot and cold air blower and the drive mechanism, respectively.

2. The greenhouse ventilation device according to claim 1, characterized in that: The driving mechanism includes an electric push rod, which is located below the ventilation opening and its body is fixed to the greenhouse. The telescopic rod of the electric push rod is connected to a movable ventilation door, which is slidably connected to the greenhouse.

3. A greenhouse ventilation device according to claim 1, characterized in that: Inside the greenhouse, a distribution pipe is installed at each hot and cold air fan. One end of the distribution pipe faces the air outlet of the hot and cold air fan, and the other end extends into the greenhouse to the side away from the hot and cold air fan. Multiple distribution holes are opened on the distribution pipe.

4. A greenhouse ventilation device according to claim 3, characterized in that: The air distribution duct has an air collection hood on the side near the hot and cold air blower.

5. A greenhouse ventilation device according to claim 3 or 4, characterized in that: The air distribution duct is connected and fixed to the inner wall of the greenhouse by multiple connecting rods.

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