Ventilation system and method for forsythia suspensa planting and cultivation room

Abstract

The invention discloses a ventilation system and method for a forsythia suspensa planting room, and relates to the technical field of plant cultivation ventilation, the ventilation system comprises a greenhouse support frame, and further comprises a blast part and an exhaust part which are fixedly mounted on the greenhouse support frame; the air blowing part is used for blowing air outside the greenhouse into the greenhouse and providing enough oxygen for growth of fructus forsythiae in the greenhouse, the air blowing part comprises an air blowing assembly, a flow dividing assembly, an air volume adjusting assembly and a heating assembly, and the air blowing assembly is used for blowing the air outside the greenhouse into the greenhouse. The fructus forsythiae greenhouse has the advantages that air at the bottom of the greenhouse vertically flows upwards according to the heat conduction principle, then the rising bottom air is brought out of the greenhouse through air flow horizontally attached to the top of the greenhouse, the direction of the air flow in the greenhouse is regular, vortex is prevented from being generated, meanwhile, air blowing and ventilation can be conducted on the roots of fructus forsythiae, and the ventilation effect is good. The ventilation rate of air at the roots of fructus forsythiae is increased, so that the ventilation efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of plant cultivation ventilation, and in particular to a ventilation system and method for a Forsythia suspensa cultivation room. Background Art

[0002] Forsythia is a common Chinese medicinal material. Its main ingredients have the effects of clearing away heat, detoxifying, reducing swelling and relieving pain. Since the most suitable growth temperature for Forsythia is 20-25℃, it is usually cultivated in greenhouse cultivation rooms. In order to ensure the growth state of Forsythia, a ventilation system is required to ventilate the interior of the greenhouse cultivation room to provide sufficient oxygen and reduce the accumulation of carbon dioxide.

[0003] The existing cultivation room ventilation system is a simple blower ventilation, in which a blower is installed on the top of the greenhouse, and the air outside the greenhouse is sucked into the greenhouse through the blower, and then the air inside the greenhouse is squeezed out of the greenhouse through the airflow. Although it has a certain ventilation effect, the ventilation efficiency is low and uneven. Therefore, the announcement number CN210275305U discloses a ventilation system for a forsythia planting cultivation room, which includes a door-shaped frame, a horizontal frame is arranged on the upper part of the door-shaped frame, a first fan is arranged on the upper side of the horizontal frame, and a lower side of the horizontal frame is symmetrically provided with a first fan. An I-beam track is provided, a fan rack is provided on the lower side of the cross frame, walking devices are provided on the upper sides of both ends of the fan rack, and the walking devices reciprocate along the I-beam track, a plurality of second fans are provided on the lower side of the fan rack, and a rotating device is provided between the second fans and the fan rack, a third fan is provided on one side of the lower part of the portal frame, an air inlet channel is provided on the other side of the lower part of the portal frame, a heating wire layer is provided in the middle of the air inlet channel, a filter cotton layer is provided at the outer end of the air inlet channel, and a wet curtain is provided at the inner end of the air inlet channel.

[0004] By setting the first fan, the vertical wind flow and exchange in the forsythia cultivation room are promoted, the second fan is used to promote the horizontal air flow and exchange, and the horizontal air flow range is expanded through the reciprocating motion on the I-beam track. The fan rack carries multiple second fans through the reciprocating motion of the walking device, with a large range, fast speed and high efficiency. The second fan can change the wind direction through the rotating device; by turning on the third fan, negative pressure can be quickly formed in the cultivation room, and fresh air can be introduced through the air inlet channel. The filter cotton layer in the air inlet channel not only plays a good role in heat preservation, but also can filter air impurities, reduce pollution and optimize air quality.

[0005] Through the electric heating wire layer, when fresh air is introduced, the outdoor temperature is prevented from being too low, which would inhibit the growth of plants. Through the wet curtain, when the indoor temperature is too high, there is no need to turn on the heating function of the electric heating wire layer when introducing fresh air. The air evaporates through the wet curtain and then blows to every corner, causing the indoor temperature to drop rapidly. In short, through the action of the first fan, the second fan and the third fan, the air flow and exchange in the cultivation room are more thorough and sufficient, thereby achieving the advantages of optimizing the quality of fresh air, quickly adjusting the temperature, fully exchanging the air and promoting growth.

[0006] The ventilation system of the Forsythia planting cultivation room adopts multiple fans to ventilate the cultivation room. Since the ventilation degree of Forsythia is different at different stages, uninterrupted ventilation is required for Forsythia in the seedling stage to prevent seedling burning. Although multiple fans are used for ventilation, it has the advantage of more thorough ventilation, but multiple fans operate uninterruptedly for a long time at the same time, which consumes a lot of electricity and is too costly. At the same time, the installation of this system requires the installation of large guide rails on the top of the cultivation room, which has certain requirements for its load-bearing capacity. The Forsythia cultivation room is an ordinary film greenhouse with limited load-bearing capacity of its support frame. Therefore, it cannot be effectively installed, and there is a safety hazard of falling. In addition, the fan is used to directly exchange air in the vertical direction. The high-intensity airflow generated by the fan will affect the normal growth of Forsythia, and the direct blowing of the fan to drive the airflow to move will produce vortices, thereby affecting the normal flow of air in the greenhouse and reducing ventilation efficiency.

[0007] Therefore, a novel ventilation system and method for a Forsythia suspensa cultivation room can be used to solve the deficiencies of the prior art. Summary of the invention

[0008] The purpose of the present invention is to solve the problems in the prior art of high energy consumption and strong wind force affecting the growth of Forsythia suspensa, and to propose a ventilation system and method for a Forsythia suspensa planting cultivation room.

[0009] In order to achieve the above object, the present invention adopts the following technical solutions:

[0010] A ventilation system for a forsythia planting cultivation room, comprising a greenhouse support frame, and also comprising an air blowing part and an air exhaust part fixedly mounted on the greenhouse support frame;

[0011] The blower part is used to blow the outside air of the greenhouse into the inside of the greenhouse to provide enough oxygen for the growth of the forsythia in the greenhouse. The blower part includes a blower assembly, a diversion assembly, an air volume adjustment assembly and a heating assembly. The blower assembly is used to blow the outside air into the greenhouse. The diversion assembly is used to divide the blown air into two parts, one part passes through the top of the greenhouse, and the other part passes through the bottom of the greenhouse. The air volume adjustment assembly is used to adjust the air volume passing through the bottom of the greenhouse, and adaptively adjusts it according to different growth stages. The heating assembly is used to heat the air passing through the top of the greenhouse to form a relatively high temperature protective layer on the top of the greenhouse;

[0012] The exhaust part is used to exhaust the air inside the greenhouse from the greenhouse, and cooperate with the blowing part to form an airflow in the greenhouse to achieve air exchange inside and outside the greenhouse. The exhaust part includes an exhaust component.

[0013] Preferably, the air blowing assembly comprises a protective shell, a motor is fixedly mounted inside the protective shell, a fan blade is fixedly mounted on the motor driving end, and a protective net for protecting the motor is fixedly mounted on the protective shell.

[0014] Preferably, the diverter assembly includes a diverter pipe fixedly mounted on the protective shell, the diverter pipe is connected to the protective shell, a rotating rod is rotatably mounted inside the diverter pipe, one end of the rotating rod passes through and extends out of the diverter pipe, a rotating cylinder connected to the rotating rod is fixedly mounted outside the diverter pipe, a windshield plate matching the diverter pipe is fixedly mounted on the rotating rod, a guide pipe one and a guide pipe two are fixedly connected to the diverter pipe through a boosting mechanism, an air outlet pipe one is fixedly connected to the guide pipe one, an air outlet pipe two is fixedly connected to the guide pipe two, an air outlet pipe one is fixedly connected to a nozzle, an air outlet pipe two is fixedly connected to a bent pipe, and the bent pipe is fixedly connected to a corrugated pipe.

[0015] Preferably, the nozzle adopts a duckbill design, and the size of the nozzle can be designed according to the curvature of the greenhouse roof.

[0016] Preferably, the boosting mechanism comprises a speed increasing tube fixedly connected to the shunt tube, the speed increasing tube is connected to both the first flow guide tube and the second flow guide tube, and the speed increasing tube adopts a conical design.

[0017] Preferably, the air volume adjustment component includes a bracket fixedly mounted on the outside of the air outlet pipe 1 and the air outlet pipe 2, a control box fixedly mounted on the bracket, an electric push rod 1 rotatably mounted on the bracket, a connecting rod 1 rotatably mounted on the telescopic end of the electric push rod 1, a rotating rod 1 rotatably mounted on the air outlet pipe 2, the rotating rod 1 penetrates and extends out of the air outlet pipe 2, a baffle matched with the air outlet pipe 2 is fixedly mounted on the rotating rod 1, and the connecting rod 1 and the rotating rod 1 are fixedly connected.

[0018] Preferably, the heating assembly includes a rotating block fixedly mounted on the driving end of the motor, a friction block is slidably mounted on the rotating block, a groove body for the friction block to slide is opened on the rotating block, a spring fixedly mounted in the groove body and connected to the friction block, a friction ring matched with the friction block is fixedly mounted inside the protective shell, a heat-conducting rod is fixedly connected to the friction ring, a rotating rod 2 is rotatably mounted inside the air outlet pipe 1, a heat-conducting metal wire disk is fixedly mounted on the rotating rod 2, the heat-conducting rod is rotatably connected to the rotating rod 2, an electric push rod 2 is rotatably mounted on the bracket, a connecting rod 2 is rotatably mounted on the telescopic end of the electric push rod 2, the connecting rod 2 and the rotating rod 2 are fixedly connected, and a cooling mechanism is mounted on the air outlet pipe 2.

[0019] Preferably, the cooling mechanism includes an air inlet pipe fixedly connected to the second air outlet pipe, and a plurality of air inlet heads are fixedly connected to the bottom of the air inlet pipe, a part of the air inlet heads are located outside the greenhouse, and another part of the air inlet heads are located inside the greenhouse.

[0020] Preferably, the exhaust assembly comprises an exhaust fan, and the exhaust fan is fixedly connected to a suction nozzle matched with the nozzle, and the design of the suction nozzle is the same as that of the nozzle.

[0021] The present invention also provides a ventilation method for a Forsythia suspensa cultivation room, comprising the ventilation system for the Forsythia suspensa cultivation room, and further comprising the following steps:

[0022] S1. First, install the blowing unit and the exhaust unit on the greenhouse support frame, so that the blowing assembly on the blowing unit is located outside the greenhouse, the air volume adjustment assembly is located inside the greenhouse, and the exhaust unit is located outside the greenhouse;

[0023] S2. When ventilation is required, the blower assembly is turned on. The blower assembly blows the air outside the greenhouse into the greenhouse. Before the air enters the greenhouse, it passes through the diversion assembly, which intermittently divides the air into two streams. One stream passes through the heating assembly from the top of the greenhouse, and then is discharged horizontally along the top of the greenhouse through the exhaust part. The other stream passes through the air volume adjustment assembly from the bottom of the greenhouse or the middle of the greenhouse.

[0024] S3. When the air is heated by the heating component, the air inhaled from the outside will have a certain temperature. The air with a certain temperature will flow at the top of the greenhouse, forming a temperature difference between the top and the bottom of the greenhouse. The cold air at the bottom of the greenhouse will absorb heat and rise, thereby forming a vertical upward airflow inside the greenhouse. The airflow will be carried out of the greenhouse horizontally by the horizontal hot airflow. When the air is adjusted by the air volume adjustment component, it will blow to the bottom of the greenhouse, allowing the air at the bottom of the greenhouse to circulate, thereby completing the entire ventilation operation.

[0025] Compared with the prior art, the present invention has the following advantages:

[0026] 1. When the ventilation device of the forsythia planting cultivation room is ventilating the greenhouse, a heating component is set to heat the air flowing on the top of the greenhouse, and then a hot air flow moving along the top of the greenhouse is formed in conjunction with the use of a suction nozzle and a nozzle. The heat conduction principle is used to make the air at the bottom of the greenhouse flow vertically upward, and then the rising bottom air is brought out of the greenhouse through the airflow horizontally along the roof of the greenhouse, so that the airflow direction inside the greenhouse is regular to prevent the generation of vortices, thereby greatly improving the ventilation efficiency.

[0027] 2. When the ventilation device of the Forsythia planting and cultivation room is ventilating the greenhouse, a diversion mechanism is set to intermittently divide the air blown into the greenhouse into two streams. One stream is used to form a horizontal airflow moving along the top of the greenhouse, and the other stream is directly blown to the roots of the Forsythia, so that the air at the bottom of the greenhouse flows, thereby improving the ventilation efficiency.

[0028] 3. When the ventilation device of the Forsythia planting and cultivation room is used for ventilation of the greenhouse, the air flow and velocity of the air blown to the bottom of the greenhouse can be controlled according to the growth stage of the Forsythia by setting the air volume adjustment component. The air velocity and flow rate can be slowly increased as the Forsythia grows, which can effectively improve the ventilation efficiency of the Forsythia root and is beneficial to the growth of Forsythia.

[0029] In summary, the present invention utilizes the principle of heat conduction to make the air at the bottom of the greenhouse flow vertically upward, and then uses the airflow horizontally attached to the roof of the greenhouse to bring the rising bottom air out of the greenhouse, so that the airflow direction inside the greenhouse is regular to prevent the generation of vortices. At the same time, air blowing ventilation can be carried out at the roots of Forsythia suspensa to speed up the circulation rate of air at the roots of Forsythia suspensa, thereby improving ventilation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings, wherein:

[0031] Figure 1 This is a structural schematic diagram of a ventilation system for a Forsythia suspensa cultivation room proposed by the present invention;

[0032] Figure 2 for Figure 1 An enlarged schematic diagram of the structure of the middle blast section;

[0033] Figure 3 for Figure 1 An enlarged schematic diagram of the structure of the middle exhaust section;

[0034] Figure 4 for Figure 2 Detailed schematic diagram of the structure after being rotated to a certain angle;

[0035] Figure 5 for Figure 4An enlarged schematic diagram of the structure of the middle protective shell and its internal components;

[0036] Figure 6 for Figure 5 A schematic detailed view of the plan structure along one of the angles;

[0037] Figure 7 for Figure 6 Detailed schematic diagram of the three-dimensional structure along the AA section;

[0038] Figure 8 for Figure 7 Detailed schematic diagram of the structure after being rotated to a certain angle;

[0039] Fig. 9 for Figure 7 A detailed schematic diagram of the enlarged structure of the middle friction ring, the rotating block and the friction block;

[0040] Fig.10 for Figure 2 A schematic diagram of the enlarged structure of the middle shunt pipe and its internal components;

[0041] Fig.11 for Figure 2 A schematic detailed diagram of the structure of the medium speed increasing pipe, the first guide pipe, the second guide pipe, the first outlet pipe, and the second outlet pipe rotating at a certain angle;

[0042] Fig.12 for Fig.11 An enlarged structural schematic detail diagram of the middle baffle and its surrounding components;

[0043] Fig.13 for Fig.11 An enlarged structural schematic detail diagram of the heat-conducting metal wire disc and its surrounding components.

[0044] In the figure: 1. Greenhouse support frame; 2. Protective shell; 3. Exhaust fan; 4. Suction nozzle; 5. Bellows; 6. Diverter pipe; 7. Speed ​​increasing pipe; 8. Guide pipe one; 9. Guide pipe two; 10. Air inlet pipe; 11. Air inlet head; 12. Air outlet pipe one; 13. Nozzle; 14. Air outlet pipe two; 15. Bend pipe; 16. Heat transfer rod; 17. Friction ring; 18. Rotating block; 19. Fan blade; 20. Friction block; 21. Protective net; 22. Motor; 23. Wind shield; 24. Rotating cylinder; 25. Rotating rod; 26. Control box; 27. Bracket; 28. Electric push rod one; 29. ​​Connecting rod one; 30. Rotating rod one; 31. Baffle; 32. Electric push rod two; 33. Connecting rod two; 34. Rotating rod two; 35. Heat transfer wire coil. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] Example 1: Reference Figure 1-Figure 2 , Figure 4-Figure 13 , a ventilation system for a Forsythia suspensa planting cultivation room, comprising a greenhouse support frame 1, and also comprising a blower part and an exhaust part fixedly mounted on the greenhouse support frame 1;

[0047] The blower part is used to blow the outside air of the greenhouse into the greenhouse to provide enough oxygen for the growth of the forsythia in the greenhouse. The blower part includes a blower component, a diversion component, an air volume adjustment component and a heating component. The blower component is used to blow the outside air into the greenhouse;

[0048] The air blowing assembly includes a protective shell 2 , in which a motor 22 is fixedly mounted, a fan blade 19 is fixedly mounted on the driving end of the motor 22 , and a protective net 21 for protecting the motor 22 is fixedly mounted on the protective shell 2 .

[0049] The rotation of the driving end of the motor 22 drives the fan blades 19 to rotate, thereby sucking the air outside the greenhouse into the greenhouse through the protective shell 2. The protective net 21 is used to protect the motor 22 and prevent the motor 22 from being damaged by the outside world. Since the motor 22 is arranged outside the greenhouse, its waterproof and dustproof measures are indispensable. The waterproof and dustproof measures are all existing mature measures. Since they are not the innovation points of this application, they will not be elaborated here.

[0050] The diverter assembly is used to divide the blown air into two parts, one part passes through the roof of the greenhouse, and the other part passes through the bottom of the greenhouse; the diverter assembly includes a diverter pipe 6 fixedly installed on the protective shell 2, the diverter pipe 6 is connected to the protective shell 2, a rotating rod 25 is rotatably installed inside the diverter pipe 6, one end of the rotating rod 25 passes through and extends out of the diverter pipe 6, a rotating cylinder 24 connected to the rotating rod 25 is fixedly installed outside the diverter pipe 6, a windshield plate 23 matching the diverter pipe 6 is fixedly installed on the rotating rod 25, and a guide pipe 8 and a guide pipe 9 are fixedly connected to the diverter pipe 6 through a booster mechanism.

[0051] Intermittent blasting: The rotating cylinder 24 drives the rotating rod 25 to rotate back and forth, thereby driving the wind shield plate 23 to rotate back and forth, so that the air in the diversion pipe 6 can be divided into two streams, one stream flows out from the guide pipe 1 8, and the other stream flows out from the guide pipe 2 9.

[0052] The boost mechanism includes a speed increasing tube 7 fixedly connected to the flow dividing tube 6. The speed increasing tube 7 is connected to the flow guiding tube 1 8 and the flow guiding tube 2 9. The speed increasing tube 7 adopts a conical design.

[0053] Since the speed increasing tube 7 adopts a conical design, when the air passes through the speed increasing tube 7, its inner diameter becomes smaller and smaller, so the air flow rate in the speed increasing tube 7 becomes larger and larger, thereby forming a speed increasing effect. The purpose of this part is to increase the speed of the air blown out of the diversion tube 6, expand the air flow rate, make the air ejection speed faster, reduce the probability of air divergence, effectively improve the regularity of air flow, and thus improve the ventilation efficiency.

[0054] The guide pipe 1 8 is fixedly connected with an air outlet pipe 1 12 , the guide pipe 2 9 is fixedly connected with an air outlet pipe 2 14 , the air outlet pipe 1 12 is fixedly connected with a nozzle 13 , the air outlet pipe 2 14 is fixedly connected with a bent pipe 15 , and the bent pipe 15 is fixedly connected with a bellows 5 .

[0055] The end position of the bellows 5 is controlled manually or by automatic mechanical equipment so that the end of the bellows 5 is horizontally aligned with the root of the Forsythia suspensa. At this time, the air ejected from the bellows 5 will directly disperse the air at the root of the Forsythia suspensa in the horizontal direction, thereby improving the air flow at the root of the Forsythia suspensa and thus improving the ventilation efficiency.

[0056] The nozzle 13 adopts a duckbill design, and the size of the nozzle 13 can be designed according to the curvature of the greenhouse roof. The purpose of this design is to ensure that the air ejected by the nozzle 13 moves horizontally along the top of the greenhouse, forming an air film on the top of the greenhouse. By utilizing the flow of the air film, the air net at the bottom of the greenhouse can be brought to the top of the greenhouse to achieve vertical air flow (based on the principle of fluid negative pressure).

[0057] The air volume regulating component is used to adjust the air volume passing through the bottom of the greenhouse, and performs adaptive adjustment according to different growth stages; the air volume regulating component includes a bracket 27 fixedly mounted on the outside of the air outlet pipe 12 and the air outlet pipe 2 14, a control box 26 is fixedly mounted on the bracket 27, an electric push rod 28 is rotatably mounted on the bracket 27, a connecting rod 29 is rotatably mounted on the telescopic end of the electric push rod 28, a rotating rod 30 is rotatably mounted on the air outlet pipe 2 14, the rotating rod 30 penetrates and extends out of the air outlet pipe 2 14, a baffle 31 matching the air outlet pipe 2 14 is fixedly mounted on the rotating rod 1 30, and the connecting rod 29 and the rotating rod 1 30 are fixedly connected.

[0058] Since the flow rate of the air entering the guide tube 29 is relatively high, it is necessary to use an electric push rod 28 to change the angle of the baffle 31. The larger the angle of the baffle 31 with the horizontal direction, the lower the ventilation rate and the higher the air flow rate. On the contrary, the smaller the angle of the baffle 31 with the horizontal direction, the lower the ventilation rate and the slower the air flow rate. In this way, the air flow rate and flow rate can be changed according to different growth stages to ensure that the growth of Forsythia is in the best ventilation state. The electric push rod 28 is controlled by the control box 26. A monitor is installed in the control box 26, which can monitor the growth of Forsythia in real time, as well as detect the temperature, humidity and oxygen content inside the greenhouse.

[0059] The heating assembly is used to heat the air passing through the roof of the greenhouse, forming a protective layer with a relatively high temperature on the roof of the greenhouse; the heating assembly includes a rotating block 18 fixedly installed on the driving end of the motor 22, a friction block 20 is slidably installed on the rotating block 18, a groove body for the friction block 20 to slide is opened on the rotating block 18, a spring fixedly installed in the groove body and fixedly connected to the friction block 20, a friction ring 17 matched with the friction block 20 is fixedly installed inside the protective shell 2, a heat-conducting rod 16 is fixedly connected to the friction ring 17, a rotating rod 2 34 is rotatably installed inside the air outlet pipe 12, a heat-conducting metal wire disk 35 is fixedly installed on the rotating rod 2 34, the heat-conducting rod 16 is rotatably connected to the rotating rod 2 34, an electric push rod 2 32 is rotatably installed on the bracket 27, a connecting rod 2 33 is rotatably installed on the telescopic end of the electric push rod 2 32, the connecting rod 2 33 and the rotating rod 2 34 are fixedly connected, and a cooling mechanism is installed on the air outlet pipe 2 14.

[0060] The rotation of the driving end of the motor 22 drives the rotating block 18 to rotate, thereby driving the friction block 20 to rotate. The friction block 20 will resist the friction ring 17 under the action of the spring to generate friction heat, and then the generated heat will be conducted to the heat-conducting wire disk 35 through the heat-conducting rod 16. The air will be heated when passing through the heat-conducting wire disk 35, so an air film with a higher temperature than the bottom of the greenhouse will be formed on the top of the greenhouse, which can not only isolate the temperature difference of the external environment, but also use the temperature difference to drive the air at the bottom of the greenhouse to rise, thereby achieving the purpose of generating airflow in the vertical direction. The vertical airflow generated here is uniform, does not generate eddy currents, and has a good ventilation effect.

[0061] The cooling mechanism includes an air inlet pipe 10 fixedly connected to the air outlet pipe 14, and a plurality of air inlet heads 11 are fixedly connected to the bottom of the air inlet pipe 10, some of the air inlet heads 11 are located outside the greenhouse, and the other part of the air inlet heads 11 are located inside the greenhouse.

[0062] Due to the friction between the friction block 20 and the friction ring 17, heat is generated, and the air entering the guide tube 29 will pass through the friction ring 17, so the air in the guide tube 29 will also carry a certain amount of heat. Due to the air flow in the guide tube 29, negative pressure will be generated at the connection between the guide tube 29 and the air intake pipe 10, and the outside air will be sucked into the guide tube 29 through the air intake pipe 10 and the air intake head 11. Since the temperature of the outside air has not been heated, the air in the guide tube 29 will be cooled, so that the air blown on the roots of the Forsythia suspensa is cooled air, avoiding damage to the roots of the Forsythia suspensa by hot air (since one part of the air intake heads 11 is set outside the greenhouse, and the other part of the air intake heads 11 is set inside the greenhouse, the external air intake heads 11 inhale outside air, and the air intake heads 11 located inside the greenhouse will inhale the air at the bottom of the greenhouse into the guide tube 29 to avoid dead corners).

[0063] Embodiment 2: This embodiment is different from the embodiment 1 in that: Figure 1 , Figure 3 The exhaust part is used to exhaust the air inside the greenhouse from the greenhouse, and cooperate with the blowing part to form an airflow in the greenhouse to achieve air exchange inside and outside the greenhouse. The exhaust part includes an exhaust component.

[0064] The exhaust assembly includes an exhaust fan 3, which is fixedly connected to a suction nozzle 4 that cooperates with the nozzle 13. The design of the suction nozzle 4 is the same as that of the nozzle 13. The exhaust fan 3 sucks the air inside the greenhouse out of the greenhouse through the suction nozzle 4. The suction nozzle 4 cooperates with the nozzle 13 to form an arc-shaped air flow at the top of the greenhouse, which can effectively avoid the divergence of the air flow and ensure the stability of the air flow.

[0065] The specific operation steps of this device are as follows:

[0066] First, install the blowing part and the exhaust part on the greenhouse support frame 1, so that the blowing component on the blowing part is located outside the greenhouse, the air volume adjustment component is located inside the greenhouse, and the exhaust part is located outside the greenhouse;

[0067] When ventilation is required, the blower assembly is turned on, and the blower assembly blows the air outside the greenhouse into the greenhouse. Before the air enters the greenhouse, it passes through the diversion assembly, and the air is intermittently divided into two streams through the diversion assembly. One stream passes through the top of the greenhouse through the heating assembly, and then is discharged horizontally along the top of the greenhouse through the exhaust part, and the other stream passes through the bottom of the greenhouse or the middle of the greenhouse through the air volume adjustment assembly;

[0068] When the air is heated by the heating component, the air inhaled from the outside will have a certain temperature. The air with a certain temperature will flow at the top of the greenhouse, forming a temperature difference between the top and the bottom of the greenhouse. The cold air at the bottom of the greenhouse will absorb heat and rise, thereby forming a vertical upward airflow inside the greenhouse. The airflow will be carried out of the greenhouse horizontally by the horizontal hot airflow. When the air is adjusted by the air volume adjustment component, it will blow to the bottom of the greenhouse, allowing the air at the bottom of the greenhouse to circulate, thereby completing the entire ventilation operation.

[0069] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A ventilation system for a Forsythia suspensa cultivation room, comprising a greenhouse support frame (1), characterized in that: It also includes an air blowing unit and an air exhaust unit fixedly mounted on the greenhouse support frame (1); The blower part is used to blow the outside air of the greenhouse into the inside of the greenhouse to provide enough oxygen for the growth of the forsythia in the greenhouse. The blower part includes a blower assembly, a diversion assembly, an air volume adjustment assembly and a heating assembly. The blower assembly is used to blow the outside air into the greenhouse. The diversion assembly is used to divide the blown air into two parts, one part passes through the top of the greenhouse, and the other part passes through the bottom of the greenhouse. The air volume adjustment assembly is used to adjust the air volume passing through the bottom of the greenhouse, and adaptively adjusts it according to different growth stages. The heating assembly is used to heat the air passing through the top of the greenhouse to form a relatively high temperature protective layer on the top of the greenhouse; The exhaust part is used to exhaust the air inside the greenhouse from the greenhouse, and cooperate with the blowing part to form an airflow in the greenhouse to achieve air exchange inside and outside the greenhouse. The exhaust part includes an exhaust component.

2. The ventilation system for a Forsythia suspensa cultivation room according to claim 1, characterized in that: The air blowing assembly comprises a protective shell (2), a motor (22) is fixedly mounted inside the protective shell (2), a fan blade (19) is fixedly mounted on the driving end of the motor (22), and a protective net (21) for protecting the motor (22) is fixedly mounted on the protective shell (2).

3. The ventilation system for the cultivation room of Forsythia suspensa according to claim 2, characterized in that: The flow dividing assembly comprises a flow dividing tube (6) fixedly mounted on the protective shell (2), the flow dividing tube (6) being in communication with the protective shell (2), a rotating rod (25) being rotatably mounted inside the flow dividing tube (6), one end of the rotating rod (25) passing through and extending out of the flow dividing tube (6), a rotating cylinder (24) connected to the rotating rod (25) being fixedly mounted outside the flow dividing tube (6), and a stopper (24) matching with the flow dividing tube (6) being fixedly mounted on the rotating rod (25). The wind plate (23) is provided, the flow distribution pipe (6) is fixedly connected to a flow guide pipe 1 (8) and a flow guide pipe 2 (9) through a boost mechanism, the flow guide pipe 1 (8) is fixedly connected to an air outlet pipe 1 (12), the flow guide pipe 2 (9) is fixedly connected to an air outlet pipe 2 (14), the air outlet pipe 1 (12) is fixedly connected to a nozzle (13), the air outlet pipe 2 (14) is fixedly connected to a bent pipe (15), and the bent pipe (15) is fixedly connected to a corrugated pipe (5).

4. The ventilation system for a Forsythia suspensa cultivation room according to claim 3, characterized in that: The nozzle (13) is designed in a duckbill shape, and the size of the nozzle (13) can be designed according to the curvature of the greenhouse roof.

5. The ventilation system for a Forsythia suspensa cultivation room according to claim 3, characterized in that: The boosting mechanism comprises a speed increasing tube (7) fixedly connected to the flow dividing tube (6); the speed increasing tube (7) is connected to the flow guiding tube 1 (8) and the flow guiding tube 2 (9); the speed increasing tube (7) is of conical design.

6. The ventilation system for a Forsythia suspensa cultivation room according to claim 3, characterized in that: The air volume adjustment component comprises a bracket (27) fixedly mounted on the outside of the air outlet pipe (12) and the second air outlet pipe (14); a control box (26) is fixedly mounted on the bracket (27); an electric push rod (28) is rotatably mounted on the bracket (27); a connecting rod (29) is rotatably mounted on the telescopic end of the electric push rod (28); a rotating rod (30) is rotatably mounted on the second air outlet pipe (14); the rotating rod (30) penetrates and extends out of the second air outlet pipe (14); a baffle (31) matching the second air outlet pipe (14) is fixedly mounted on the rotating rod (30); and the connecting rod (29) and the rotating rod (30) are fixedly connected.

7. A ventilation system for a Forsythia suspensa cultivation room according to claim 6, characterized in that: The heating assembly comprises a rotating block (18) fixedly mounted on a driving end of a motor (22), a friction block (20) being slidably mounted on the rotating block (18), a groove body for the friction block (20) to slide on being provided on the rotating block (18), a spring fixedly mounted in the groove body and connected to the friction block (20), a friction ring (17) matching with the friction block (20) being fixedly mounted inside the protective shell (2), a heat conducting rod (16) being fixedly connected to the friction ring (17), A second rotating rod (34) is rotatably mounted inside the first air outlet pipe (12), a heat-conducting metal wire disc (35) is fixedly mounted on the second rotating rod (34), the heat-conducting rod (16) is rotatably connected to the second rotating rod (34), a second electric push rod (32) is rotatably mounted on the bracket (27), a second connecting rod (33) is rotatably mounted on the telescopic end of the second electric push rod (32), the second connecting rod (33) is fixedly connected to the second rotating rod (34), and a cooling mechanism is mounted on the second air outlet pipe (14).

8. The ventilation system for a Forsythia suspensa cultivation room according to claim 7, characterized in that: The cooling mechanism comprises an air inlet pipe (10) fixedly connected to an air outlet pipe (14), a plurality of air inlet heads (11) fixedly connected to the bottom of the air inlet pipe (10), a part of the air inlet heads (11) being located outside the greenhouse, and another part of the air inlet heads (11) being located inside the greenhouse.

9. The ventilation system for a Forsythia suspensa cultivation room according to claim 3, characterized in that: The exhaust assembly comprises an exhaust fan (3), and a suction nozzle (4) matched with the nozzle (13) is fixedly connected to the exhaust fan (3), and the design of the suction nozzle (4) is the same as that of the nozzle (13).

10. A ventilation method for a Forsythia suspensa cultivation room, used in the ventilation system for a Forsythia suspensa cultivation room as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1. First, install the blowing unit and the exhaust unit on the greenhouse support frame (1), so that the blowing assembly on the blowing unit is located outside the greenhouse, the air volume adjustment assembly is located inside the greenhouse, and the exhaust unit is located outside the greenhouse; S2. When ventilation is required, the blower assembly is turned on. The blower assembly blows the air outside the greenhouse into the greenhouse. Before the air enters the greenhouse, it passes through the diversion assembly, which intermittently divides the air into two streams. One stream passes through the heating assembly from the top of the greenhouse, and then is discharged horizontally along the top of the greenhouse through the exhaust part. The other stream passes through the air volume adjustment assembly from the bottom of the greenhouse or the middle of the greenhouse. S3. When the air is heated by the heating component, the air inhaled from the outside will have a certain temperature. The air with a certain temperature will flow at the top of the greenhouse, forming a temperature difference between the top and the bottom of the greenhouse. The cold air at the bottom of the greenhouse will absorb heat and rise, thereby forming a vertical upward airflow inside the greenhouse. The airflow will be carried out of the greenhouse horizontally by the horizontal hot airflow. When the air is adjusted by the air volume adjustment component, it will blow to the bottom of the greenhouse, allowing the air at the bottom of the greenhouse to circulate, thereby completing the entire ventilation operation.

Images