Air extraction interface having sealing structure, polycarbonate vacuum panel and sunroom

Abstract

An air extraction interface having a sealing structure, the air extraction interface being an air extraction pipe (1) or an open section (209), and one end of the air extraction interface being connected to an object to be evacuated (100); the sealing structure comprises a first section (101) and a sealing section (102) located at the air extraction interface, the inner walls of the pipe of the air extraction interface at the position where the first section (101) is located being attached to each other or having a gap, and the pipe of the air extraction interface being closed at the position where the sealing section (102) is located. The sealing structure facilitates sealing of air extraction pipes made of hard materials, thereby preventing air from entering vacuum spaces inside hard materials during the sealing process. The present application further relates to a polycarbonate vacuum panel and a sunroom.

Description

Exhaust interface with sealing structure, polycarbonate vacuum panel and sunroom TECHNICAL FIELD

[0001] The present application relates to the field of new building materials, in particular to a heat-insulating and light-transmitting material panel, and more particularly to an exhaust interface with sealing structure, a polycarbonate vacuum panel and a sunroom.

[0002] The polycarbonate vacuum panel is also known as a sunroom panel, a PC sunroom panel or a PC vacuum panel.

[0003] The sunroom is also known as a greenhouse, a sunbathing room, a sunroom, a plant growing room or a grow room, and plants such as vegetables and fruits can be planted in the sunroom. Some organizations such as associations have specified the specific definitions of some terms, for example, the American Architectural Manufacturers Association (AAMA) has specified the specific definitions of some terms. However, in the present application, the term "sunroom" should be regarded as a general term and includes all the above-mentioned terms. The sunroom in the present application refers to a plant growing room in a preferred example. BACKGROUND

[0004] After the vegetables are picked, the water loss can reach 10-20% within 24 hours, and 30-50% within 72 hours; the loss of vitamin C can reach 20-30% within 24 hours, and 50-70% within 72 hours; the loss of protein can reach 5-10% within 24 hours, the loss of fat can reach 2-5%, and the loss of minerals can reach 1-3%. Any vegetables picked will lose nutrients if not eaten immediately, so it is best to have a vegetable garden at home for picking at any time. The existing domestic soilless cultivation system cannot adjust the growth environment of vegetables, and the produced vegetables are quite limited, which cannot meet the daily needs; cultivating in the backyard of one's own home requires technical knowledge of planting vegetables, which will destroy the neat garden, require a certain amount of labor and it is not very clean to work in the field, require a large amount of water, and there are also wild animals and birds to eat, and disease and pest control is also a big problem, so ordinary families rarely plant vegetables in their own backyard.

[0005] Patent document US20210007304A1 discloses a growing system and method having a movable crop support configured to be advanced downward along a track to guide an agricultural crop along a helical path through a growing space, which allows a large number of crops to be planted in a certain space, achieving three-dimensional planting.

[0006] Patent document US20230389496A1 discloses a mobile aerosol growing system for planting plants indoors, such as balconies and kitchens, which achieves miniaturization and mobility of the planting system.

[0007] The above patent document solves the temperature and humidity control and maintenance of the small space environment around the plants in home plant cultivation, but does not solve the temperature control and insulation of the large space environment where the plants are located, especially for sunlight greenhouse vegetable cultivation in areas with low night temperature. When the outdoor temperature is low at night, the plants are prone to be frozen or suspended growth; when the temperature is high, the plants will enter an abnormal growth state such as overgrowth or disease.

[0008] Patent document US20240130300A1 discloses a greenhouse environment optimization method, pointing out that greenhouse crop production is a highly coordinated combination of complex biological, environmental, mechanical, and management systems organized to produce crops to meet market demand. The control system guides the physical environment control system (e.g. heater, cooler, irrigator) to meet the immediate plant growth needs in response to fluctuations in the natural external environment. However, patent document US20240130300A1 does not consider the energy consumption problem of heating and light control.

[0009] Patent document US20210285282A1 discloses a variable insulation assembly, pointing out that under sunny weather conditions, it is generally desirable to maximize the transmission of sunlight into a building to assist in the lighting and heating of the interior of the building. Conversely, under dark, cloudy, or cold weather conditions, it is generally desirable to maximize the insulation of the building to minimize heat loss from the building. Windows are commonly used in buildings to facilitate the transmission of sunlight into the building while also providing a sealed barrier against the ingress of wind, rain, snow, and other undesirable elements. While windows generally provide a relatively high degree of light transmission, which can be beneficial for sunny weather conditions, they also generally provide a relatively low degree of thermal insulation, which can be undesirable for dark, cloudy, or cold weather conditions. To this end, patent document US20210285282A1 provides a variable insulation assembly that includes an array of air-enclosed chambers or pockets, referred to herein as thermal cells, that are adjustable between an expanded state and a compressed state. In the expanded state, the variable insulation assembly provides a layer of thermal insulation, while in the compressed state, the variable insulation assembly is retracted such that the provided thermal insulation is reduced relative to the expanded state.

[0010] However, patent document US20210285282A1 requires a controller, and the structure is complex.

[0011] As an alternative, patent document CN113711814A and patent document CN217657336U use polycarbonate (PC) material, also known as PC plastic, in the greenhouse. PC vacuum panel, also known as PC vacuum panel, is also known as PC sunlight panel or sunlight panel. PC vacuum panel has high light transmittance and good insulation performance.

[0012] The heat insulation performance of PC vacuum panels is affected by the vacuum degree of the hollow interlayer, but patent document CN113711814A and patent document CN217657336U do not solve the problem of how to obtain a better vacuum degree, i.e., reduce air density.

[0013] Patent document US20120225239A1 discloses a thermally fractured polycarbonate vacuum panel window glass, which uses a thermal fracture component to reduce the flow of gas in the hollow space.

[0014] However, under the premise of poor vacuum extraction, the role of patent document US20120225239A1 is only auxiliary.

[0015] Patent document US20150223410A1 discloses a vacuum chamber type greenhouse wall panel system, in which the panel is vacuum sealed and interconnected and remains connected with a vacuum pump. The vacuum pump is electronically controlled according to the temperature of the external environment to compensate for leakage.

[0016] It can be seen that if the sealing problem of polycarbonate vacuum panels is not solved, a vacuum pump will always be needed to compensate for the leakage.

[0017] For sealing, patent document CN207748082U discloses a bag clamping component and a vacuum sealing machine with the bag clamping component. When performing vacuum sealing of a packaging bag, the bag opening is placed in the second ring, the bag opening is located in the sealing cavity by closing the cover, and the sealing strip presses the to-be-sealed position near the bag opening on the heating component, the vacuum extraction component works to exhaust the air in the vacuum cavity together with the air in the packaging bag, and then the heating component generates heat to heat seal the to-be-sealed position of the packaging bag.

[0018] However, the sealing scheme of patent document CN207748082U is not applicable to sealing polycarbonate vacuum panels (i.e., PC vacuum panels). First, in the scheme of patent document CN207748082U, the bag opening of the packaging bag is placed in the vacuum chamber, and then heat sealing is performed in a sealed vacuum environment, but for polycarbonate vacuum panels (i.e., PC vacuum panels), it is complex and high-cost to provide a sealed vacuum environment of the vacuum chamber. Second, because polycarbonate vacuum panels (i.e., PC vacuum panels) are different from packaging bags, packaging bags are made of flexible materials and can be squeezed flat by the atmosphere during vacuum extraction, while polycarbonate vacuum panels are hard materials at room temperature. Third, the inner walls of the packaging bag have textures, so that when the inner walls of the bag opening are pressed and pasted with each other, there is a gap due to the misalignment of the textures, and the vacuum is extracted through the gap, but it is difficult to process textures inside polycarbonate vacuum panels.

[0019] The patent document CN112874873A discloses a vacuum sealing machine for food packaging bag processing, which performs vacuumizing through an air extraction pipe and quickly presses and seals the bag opening at the moment when the air extraction pipe is extracted from the packaging bag.

[0020] However, the patent document CN112874873A cannot solve the air leakage problem caused by the extraction moment of the air extraction pipe.

[0021] SUMMARY

[0022] In view of the defects in the prior art, the purpose of the present application is to provide an air extraction pipeline with a sealing structure, a polycarbonate vacuum plate and a sunroom.

[0023] According to the present application, an air extraction interface with a sealing structure is provided, which is an air extraction pipeline or an opening section;

[0024] One end of the air extraction interface is connected to the object to be extracted, and the sealing structure includes a first section and a sealing section located in the air extraction interface;

[0025] The inner walls of the pipeline of the air extraction interface at the position of the first section are in contact with each other or have a gap;

[0026] The pipeline of the air extraction interface is closed at the position of the sealing section;

[0027] Along the extension direction of the air extraction interface, greater than or equal to one first section is located on the side of the sealing section close to the object to be extracted;

[0028] Greater than or equal to one first section is located on the side of the sealing section away from the object to be extracted; or there is no first section on the side of the sealing section away from the object to be extracted.

[0029] The use of an air extraction pipeline with a sealing structure can effectively realize the vacuumizing and sealing of a hollow plate made of hard material such as a polycarbonate vacuum plate to form a vacuum plate, thereby avoiding air leakage into the interior of the hard material vacuum plate during vacuumizing.

[0030] Preferably, the material of the air extraction interface is polycarbonate;

[0031] The first section of the polycarbonate is a part of the air extraction interface that allows extrusion after being softened by heating;

[0032] The sealing section of the polycarbonate is a part of the air extraction interface that allows molding after being hot melted;

[0033] The length of the first section along the extension direction of the air extraction interface is greater than or equal to 1 mm, and the length of the sealing section along the extension direction of the air extraction interface is greater than or equal to 1 mm.

[0034] Polycarbonate is a material that can be softened by heating, and can be applied to the preparation of the sealing structure. Meanwhile, appropriate design of the length of the first section and the sealing section can ensure reliable sealing of the object being pumped, and provide sufficient structural strength for the management of the closed structure during vacuum pumping.

[0035] Preferably, the sealing structure further comprises a second section located at the pumping interface;

[0036] The second section is located between the first section and the sealing section in the extension direction of the pumping interface, and constitutes a thermal resistance between the two sections during heating processing;

[0037] The length of the second section is greater than or equal to 1mm in the extension direction of the pumping interface;

[0038] The inner walls of the pipeline of the pumping interface at the location of the second section are in close contact with each other, or have a gap, or have a cavity;

[0039] The second section of polycarbonate is a part of the pumping interface that can be extruded after being softened by heating.

[0040] The second section provides a space for the tools for processing the first section and the tools for processing the sealing section.

[0041] According to the present application, a polycarbonate vacuum plate is provided, comprising: a multilayer polycarbonate plate body and the pumping interface with a sealing structure;

[0042] The hollow interior of the multilayer polycarbonate plate body comprises a vacuum space;

[0043] The sealing part of at least one open end of the multilayer polycarbonate plate body and the pumping pipeline as the pumping interface with a sealing structure are integrally formed; or, a part of the multilayer polycarbonate plate body forms an opening section as the pumping interface with a sealing structure.

[0044] Preferably, the multilayer polycarbonate plate body comprises a plurality of polycarbonate plates, and a plurality of partition strips are connected between two polycarbonate plates facing each other;

[0045] There is a gap between the end of the partition strip and the sealing part of the open end, and the gap constitutes a channel for communicating the subspaces separated by the partition strip;

[0046] The channel is located on the side of the sealing part of the multilayer polycarbonate plate body where the pumping pipeline is located.

[0047] The multilayer polycarbonate vacuum plate can effectively prevent heat conduction on both sides, and the internal partition strip can effectively support and prevent the multilayer polycarbonate vacuum plate from being damaged by external atmospheric pressure in a vacuum state.

[0048] Preferably, the vacuum space is provided with a gas absorber and / or a vacuum degree indicator.

[0049] The gas absorber can absorb the residual gas in the polycarbonate vacuum plate, and the vacuum degree indicator can display the vacuum degree in the polycarbonate vacuum plate, so that the polycarbonate vacuum plate with air leakage can be found in time.

[0050] According to the present application, a vacuum degree indicator for indicating the polycarbonate vacuum plate is provided, comprising: a hollow tube, a gas bag and a shielding part.

[0051] The gas bag is sleeved on one end of the hollow tube, and the shielding part is connected to the end of the hollow tube where the gas bag is located and extends axially outward, and the other end of the hollow tube is sealed.

[0052] When the external air pressure is less than the internal air pressure of the hollow tube, the gas bag is shielded by the shielding part; when the external air pressure is greater than or equal to the internal air pressure of the hollow tube, the gas bag enters the hollow tube under the action of the external air pressure and is exposed from the shielding part.

[0053] The vacuum degree indicator can indicate whether the environment is vacuum.

[0054] Preferably, the gas exhaust interface with a sealing structure is further included.

[0055] The material of the hollow tube is polycarbonate.

[0056] The other end of the hollow tube is integrally formed with the gas exhaust interface.

[0057] The vacuum degree indicator adopts the sealing structure described above, does not need to additionally set a gas exhaust pipeline, and can effectively prevent air leakage when sealed.

[0058] According to the present application, a preparation method of a polycarbonate vacuum plate is provided, comprising:

[0059] The vacuumizing step: connecting the vacuumizing equipment to the gas exhaust interface to vacuumize the multilayer polycarbonate plate body;

[0060] The sealing step: the first part of the air exhaust interface is heated and softened and extruded, so that the inner walls of the extruded part of the air exhaust interface are in close contact to form a first section, thereby temporarily sealing the pipeline of the air exhaust interface; the second part of the air exhaust interface is heated and extruded to form a sealing section, thereby permanently sealing the pipeline of the air exhaust interface; the extrusion of the first section is removed, and the inner walls of the first section maintain close contact or a gap is formed between the inner walls of the first section.

[0061] The preparation method of the polycarbonate vacuum plate can effectively prepare the polycarbonate vacuum plate and has reliable structural strength.

[0062] Preferably, the air exhaust interface is an air exhaust pipeline, and before the vacuumizing step, the method further comprises:

[0063] The pre-treatment step: the open end of the multi-layer polycarbonate plate body is heated and extruded to form a sealing part;

[0064] The other open end of the multi-layer polycarbonate plate body is milled to form a channel that communicates with each sub-space separated by the partition strip in the multi-layer polycarbonate plate body; the other open end of the multi-layer polycarbonate plate body is heated and extruded to form an air exhaust pipeline with a channel that communicates with the sub-space and the external space of the multi-layer polycarbonate plate body;

[0065] Alternatively, the air exhaust interface is an open section of the multi-layer polycarbonate plate body.

[0066] The preparation method of the polycarbonate vacuum plate can effectively vacuumize and seal the multi-layer polycarbonate plate, avoiding the entry of gas into the polycarbonate vacuum plate during the sealing process.

[0067] Preferably, at least one first section is formed on one side of the sealing section close to the other open end of the multi-layer polycarbonate plate body along the extension direction of the air exhaust pipeline;

[0068] At least one first section is formed on one side of the sealing section away from the other open end of the multi-layer polycarbonate plate body along the extension direction of the air exhaust pipeline 1, or no first section is formed;

[0069] The heating temperature of the hot melting is greater than or equal to 160℃, and the heating temperature of the softening is greater than or equal to 130℃ and less than or equal to 140℃;

[0070] Before the vacuumizing step, the method further comprises placing a gas absorbent and / or the vacuum degree indicator of claim 7 or 8 in the multi-layer polycarbonate plate body.

[0071] The polycarbonate vacuum plate prepared by the polycarbonate vacuum plate preparation method has good heat preservation effect, sound insulation effect, reliable vacuum degree and structural strength, and is suitable for a sunlight room and other buildings.

[0072] The polycarbonate vacuum plate is prepared by the polycarbonate vacuum plate preparation method.

[0073] The sunlight room comprises:

[0074] The plate 8 is spliced and detachable, and constitutes a closed or semi-closed plant growth space.

[0075] An environment adjusting system controls environment parameters of the plant growth space.

[0076] The plate 8 comprises the polycarbonate vacuum plate, or the plate 8 has the air extraction interface with the sealing structure.

[0077] The polycarbonate vacuum plate is used to build a plant growth room, which has better heat preservation effect, and cooperates with the environment adjusting system to control environment parameters of the plant growth space, thereby effectively helping plant growth.

[0078] Preferably, the environment adjusting system comprises the following devices located on an air flow path of the sunlight room:

[0079] A first air exchange device is configured to adjust an air power source, to provide an air pressure difference between the inside and outside of the plant growth space by inhaling or discharging air in the space.

[0080] A first water circulation device is configured to adjust temperature and humidity in the plant growth space and to exchange air with the outside.

[0081] The environment adjusting system further comprises any one or more of the following devices:

[0082] A first light adjustment device is configured to adjust an area of natural sunlight blocked by the plant growth space.

[0083] A second light adjustment device is configured to provide a light source directly irradiated on the inside of the plant growth space.

[0084] A second air exchange device is configured to adjust a contact area of free air flow between the inside and outside of the plant growth space.

[0085] A second water circulation device is configured to spray clean water into the plant growth space at a fixed time or according to temperature.

[0086] A third water circulation device is configured to exchange heat between air in the plant growth space and underground soil outside.

[0087] The first irrigation device is configured as a groove and is located on the south side and / or east side of the plant growth space. The plant is cultivated by using the water culture method or the tidal irrigation method;

[0088] The second irrigation device is configured as a column and is located in the middle of the plant growth space. The plant is cultivated by using the tidal irrigation method, and the plant is placed in the plurality of petal-shaped grooves arranged in the axial direction or the holes arranged in the radial direction.

[0089] The third irrigation device is configured as a groove and is located on the north side of the plant growth space. The plant is cultivated by using the drip irrigation method.

[0090] The fourth irrigation device is configured as a hole support. The plant passes through the hole, and the root is located on the side of the hole support away from the light. The plant is cultivated by using the air mist method.

[0091] A plurality of nutrient liquid pools are installed under or on the floor of the sunlight room.

[0092] At least three fertilizer liquid pools are installed on the back wall of the sunlight room. The bottom of each fertilizer liquid pool is provided with a plurality of water pipes connected to different nutrient liquid pools. Alternatively, one fertilizer liquid pool is installed on the back wall of the sunlight room. The bottom of the fertilizer liquid pool is provided with a water pipe connected to the nutrient liquid pool. The fertilizer liquid pool is located above the floor and is not blocked.

[0093] A delivery pipeline is connected to the nutrient liquid pool to deliver the nutrient liquid to the root of the plant.

[0094] The environmental regulation system includes a temperature control system, a light control system, and a gas control system to regulate the plant growth environment from multiple dimensions.

[0095] The environmental regulation system includes an irrigation control system to meet the different irrigation needs of different plants.

[0096] The environmental regulation system includes a nutrient liquid control system to prepare targeted nutrient liquid for different plants.

[0097] Preferably, the fertilizer preparation and addition system comprises:

[0098] A low liquid level sensor is arranged at a first predetermined position in the nutrient liquid pool.

[0099] A high liquid level sensor is arranged at a second predetermined position in the nutrient liquid pool.

[0100] A controller is electrically connected with the low liquid level sensor and the high liquid level sensor respectively, and is configured to open a tap water valve to add a preset amount of water to the nutrient solution pool when the low liquid level sensor detects that the liquid level of the nutrient solution pool is lower than a first preset position, and send a fertilization alarm signal to a mobile terminal, open the tap water valve to add water to the nutrient solution pool and stir until the high liquid level sensor detects that the liquid level of the nutrient solution pool reaches a second preset position when a fertilization completion signal of the mobile terminal is received.

[0101] A mobile terminal sends a user a required fertilizer and provides an operation completion button of the corresponding fertilizer when the fertilization alarm signal is received, and sends the fertilization completion signal to the controller when all the operation completion buttons of the fertilizers are triggered.

[0102] Compared with the prior art, the application has the following beneficial effects:

[0103] 1. The sealing structure of the application is convenient for sealing the hard material air extraction pipeline after air extraction is completed, and avoids the situation that air enters the internal vacuum space of the hard material during the sealing process.

[0104] 2. The PC vacuum plate adopting the sealing structure and the preparation method of the application not only has feasible structural strength, but also meets the performance requirements for constructing a sunlight room.

[0105] 3. The sealing structure avoids the problems that the outer wall of the air extraction pipe and the inner wall of the polycarbonate vacuum plate air extraction pipeline cannot be completely sealed due to aging and other reasons, and there is air leakage at the moment when the air extraction pipe is extracted.

[0106] 4. The application can enable users to conveniently eat fresh vegetables at home, and is an energy-saving and environment-friendly, automatic planting, three-dimensional planting land-saving, four-season suitable, healthy and pollution-free, high-yield, low-cost planting, simple and beautiful product household sunlight room soilless culture system, which can enable users to eat fresh vegetables to help maintain health, reduce the emission of exhaust gas by less driving to the supermarket, and increase the convenience of distributed life and work. BRIEF DESCRIPTION OF DRAWINGS

[0107] Other features, objects and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments, made with reference to the accompanying drawings:

[0108] Fig. 1 is a first embodiment schematic view of an air extraction pipeline with a sealing structure;

[0109] Fig. 2 is a second embodiment schematic view of an air extraction pipeline with a sealing structure;

[0110] Fig. 3 is a third embodiment schematic view of an air extraction pipeline with a sealing structure;

[0111] Figure 4 is a schematic diagram of the structure of a sealed polycarbonate vacuum panel;

[0112] Figure 5 is a schematic diagram of the structure of a polycarbonate vacuum panel before sealing;

[0113] Figure 6 is a schematic diagram of the structure of a vacuum degree indicator when the external air pressure is less than the internal air pressure of the vacuum degree indicator;

[0114] Figure 7 is a schematic diagram of the structure of a vacuum degree indicator when the external air pressure is greater than the internal air pressure of the vacuum degree indicator;

[0115] Figure 8 is a schematic diagram of the preparation principle of the air exhaust pipe;

[0116] Figure 9 is a schematic diagram of another sealing method for sealing a polycarbonate hollow panel into a polycarbonate vacuum panel;

[0117] Figure 10 is a schematic diagram of the working principle of sealing;

[0118] Figure 11 is a schematic diagram of the structure of a plant growth chamber;

[0119] Figure 12 is a schematic diagram of the structure of an irrigation control system and a nutrient solution control system;

[0120] Figure 13 is a schematic diagram of the air flow path of a plant growth chamber;

[0121] Figure 14 is a schematic diagram of the position of a water curtain and a fan;

[0122] Figure 15 is a schematic diagram of the structure of a sunshade curtain.

[0123] Figure 16 is a schematic diagram of the structure of a water curtain;

[0124] Figure 17 is a flowchart of fertilizer preparation and addition;

[0125] Figure: 1: air extraction pipeline; 100: object to be extracted; 101: first section; 102: sealing section; 103: second section; 2: multilayer polycarbonate plate main body; 201: open end; 202: sealing part; 203: batten; 204: polycarbonate plate; 205: interval; 206: sub-space; 209: open section 3: hollow pipe; 4: air bag; 5: shielding part; 6: slotted clamp; 7: cylinder; 801: plate; 802: aluminum profile frame; 803: sunshade curtain; 804: water curtain; 805: fan; 8041: top water pipe hole; 8042: multilayer kraft paper layer; 8043: water collection pipe; 8044: high water level sensor; 8045: low water level sensor; 8046: UVC disinfection lamp; 8047: water pump; 8048: electromagnetic valve; 806: nutrient solution pool; 807: conveying pipeline; 808: first irrigation device; 809: motor drive device; 810: curtain; 811: pull rod arm; 9: air extraction pipe; 901: pipeline position; 701: high liquid level sensor; 702: low liquid level sensor. DETAILED DESCRIPTION

[0126] People pay more and more attention to the health management of diet, and hope to be able to intake fresh vegetables and fruits. If the vegetables can be planted in the self-garden, it will help to meet the needs of people. In order to make the yield of vegetables meet the daily demand of a family, a certain vegetable planting space is needed, and the vegetable planting land is generally arranged outside the main part of the house, such as arranged in the sunlight room.

[0127] The applicant found through observation of air temperature that in some areas at night, the temperature is too low, and since the sunlight room is mostly in an open environment, even if the inside of the sunlight room cannot provide the temperature beneficial to the growth of plants at night or under some weather and climate, it even causes the frostbite of plants.

[0128] The reason is that the wallboard and roof of the sunlight room occupy the main area in the heat exchange process between the inside and outside, so they play a major role in the heat preservation performance of the sunlight room. The heat preservation effect of the single-layer PC board is not ideal. Therefore, the applicant improved the single-layer PC board to a PC hollow board (i.e., a polycarbonate hollow board), and the heat preservation performance was increased, but it was still not ideal. Further research and development found that the reason was that air is a good conductor of heat, and the heat preservation effect of the PC hollow board was limited. Further research found that if the PC hollow board was evacuated to form a PC vacuum board with good vacuum degree, the heat preservation performance of the PC vacuum board could be greatly increased. This requires solving the sealing problem of the PC vacuum board. The polycarbonate vacuum board has a poor sealing problem, causing air leakage, and how to seal the polycarbonate vacuum board during the evacuation process is a difficult problem.

[0129] Therefore, the applicant tried to use various tapes to seal the polycarbonate vacuum board, but none of the physical adsorption, mechanical fastening, and glue could seal the polycarbonate vacuum board well.

[0130] The application will be described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the application, but do not limit the application in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the application. These are within the scope of the application.

[0131] Example 1

[0132] Figure 1 is Example 1. This embodiment provides an air exhaust pipe with a sealing structure. One end of the air exhaust pipe 1 is connected to an air-exhausted object 100, and the other end is used to connect an air-exhausting device. The air-exhausted object 100 is subjected to air exhaust, pressure reduction, or vacuumization, and the sealing structure is used to seal the air exhaust pipe 1 after air exhaust. The air-exhausted object 100 is, for example, a polycarbonate vacuum board ready to be formed into a vacuum, and the air-exhausting device is a vacuum pump.

[0133] As shown in Figure 1, the sealing structure includes a first section 101 and a sealing section 102 of the air exhaust pipe 1. The material of the air exhaust pipe 1 in this embodiment is polycarbonate, i.e., PC, which can be used in scenarios that require good light transmission and heat preservation, such as sunlight rooms. In a preferred example, both the air exhaust pipe 1 and the air-exhausted object 100 are polycarbonate, and they are an integral structure.

[0134] The inner walls of the pipe of the air exhaust pipe 1 at the location of the first section 101 are in close contact with each other or have a gap, and the pipe of the air exhaust pipe 1 is closed at the location of the sealing section 102. The number of the first section 101 and the sealing section 102 is not limited in this embodiment. For example, the sealing section 102 can be multiple.

[0135] Specifically, the first section 101 of polycarbonate is the part of the exhaust duct 1 that allows the extrusion after being heated and softened. In the processing procedure, the first section 101 is the part of the exhaust duct 1 that is extruded after being heated and softened. The exhaust duct 1 at the position of the first section 101 is softened by heating to 135°C, and then the inner walls of the exhaust duct 1 at the position of the first section 101 are extruded and clamped to adhere to each other to form a temporary seal for the object 100 to be exhausted.

[0136] The sealing section 102 of polycarbonate is the part of the exhaust duct 1 that allows the molding after being heated and melted. In the processing procedure, the sealing section 102 is the part of the exhaust duct 1 that is molded after being heated and melted. In the temporary sealing state, in a non-limiting example, the exhaust can be removed, the sealing section 102 is at normal pressure, and the exhaust duct 1 at the position of the sealing section 102 is heated and melted by heating to 160°C and clamped by a clamp to be closed. After the sealing section 102 cools down, the extrusion of the first section 101 can be stopped, and the inner walls of the exhaust duct 1 at the first section 101 can remain adhered to each other or can have a gap due to the rebound of the extruded part of the exhaust duct 1.

[0137] In the embodiment shown in FIG. 1, along the extension direction of the exhaust duct 1, at least one first section 101 is located on the side of the sealing section 102 close to the object 100 to be exhausted, and there is no first section 101 on the side of the sealing section 102 away from the object 100 to be exhausted.

[0138] In order to ensure the temporary sealing effect of the object 100 to be exhausted in the vacuum state, the length of the first section 101 along the extension direction of the exhaust duct 1 is greater than or equal to 1 mm. In order to ensure the effect of the final sealing, the length of the sealing section 102 along the extension direction of the exhaust duct 1 is greater than or equal to 1 mm.

[0139] As shown in FIG. 1, the sealing section 102 is immediately adjacent to the first section 101, so that the air between the sealing section 102 and the first section 101 can be minimized or avoided, and the air between the sealing section 102 and the first section 101 can be prevented from entering the object 100 to be exhausted through the gap between the inner walls of the first section 101 after the extrusion of the first section 101 on the side of the sealing section 102 close to the object 100 to be exhausted is stopped.

[0140] In the variation shown in FIG. 2, at least one first section 101 is located on the side of the sealing section 102 away from the object 100 to be exhausted based on the embodiment shown in FIG. 1.

[0141] As shown in FIG. 2, the first section 101 on the side of the sealing section 102 away from the object 100 to be evacuated also provides temporary sealing, so that both sides of the sealing section 102 are temporarily sealed, and the air pressure on both sides is very small, avoiding the inner wall of the hot melt being pushed by a large air pressure difference.

[0142] As shown in FIG. 3, as a non-limiting variation, on the basis of the embodiment shown in FIG. 1, the sealing structure further includes a second section 103 of the evacuation pipeline 1. Along the extension direction of the evacuation pipeline 1, the second section 103 is located between the two facing first section 101 and sealing section 102. The purposes include: when the first section 101 and the sealing section 102 are formed, the clamps are clamped on the evacuation pipeline 1 at the same time, and through the design of the second section 103, it is ensured that the clamps of the first section 101 and the clamps of the sealing section 102 avoid mutual touching and interfering.

[0143] Among them, along the extension direction of the evacuation pipeline 1, the length of the second section 103 is greater than or equal to 1mm. The pipeline inner wall of the evacuation pipeline 1 at the position of the second section 103 is in close contact with each other, or has a gap, or has a cavity. The second section 103 of polycarbonate is the part of the evacuation pipeline 1 that allows extrusion molding after being heated and softened, that is, the second section 103 is the part of the evacuation pipeline 1 that is extrusion molded after being heated and softened.

[0144] Example 2

[0145] As shown in FIG. 4 and FIG. 5, the present embodiment provides a polycarbonate hollow plate, which comprises: a multilayer polycarbonate plate body 2 and the evacuation pipeline 1 with a sealing structure. The multilayer polycarbonate plate body 2 comprises a plurality of polycarbonate plates 204, four polycarbonate plates 204 are combined to form four faces of the multilayer polycarbonate plate body 2, and the remaining two open ends 201 have sealing parts 202, the open ends 201 are sealed through the sealing parts 202, and the sealing parts 202 of at least one open end 201 of the multilayer polycarbonate plate body 2 are integrally formed with the evacuation pipeline 1.

[0146] The hollow interior of the multilayer polycarbonate plate body 2 comprises a vacuum space 200, and the vacuum space 200 is provided with a gas absorber and / or a vacuum degree indicator. Among the four faces, a plurality of partition strips 203 are connected between the two polycarbonate plates 204 with larger areas and facing each other, so as to divide the vacuum space 200 into a plurality of subspaces 206. There is a gap 205 between the end of the partition strip 203 and the sealing part 202 of the open end 201, and the gap 205 constitutes a channel connecting the subspaces 206 divided by the partition strip 203. The channel is located on the side of the sealing part 202 of the multilayer polycarbonate plate body 2 where the evacuation pipeline 1 is located, so as to facilitate the evacuation pipeline 1 to simultaneously evacuate each subspace 206 before sealing.

[0147] Embodiment 3

[0148] In order to timely find out the leakage of the hollow polycarbonate plate of Embodiment 2, such as the damage of the plate surface, this embodiment provides a vacuum degree indicator.

[0149] The vacuum degree indicator comprises a hollow tube 3, an air bag 4 and a shielding part 5. The air bag 4 is sealed and sleeved at one end of the hollow tube 3, the shielding part 5 is connected to the end of the hollow tube 3 where the air bag 4 is located and extends axially outward, and the other end of the hollow tube 3 is sealed. The hollow tube 3 can be made of polycarbonate material, i.e. PC material. The other end of the hollow tube 3 can be sealed by, for example, but not limited to, the way of Embodiment 1 or the variant of Embodiment 1, and the other end is integrally formed with the air suction pipe 1. The air pressure in the hollow tube 3 is about 200 Pa. The shielding part 5 is a non-sealed structure, which allows the air bag 4 to contact the external space of the vacuum degree indicator, and if there is gas in the external space, the gas in the external space is allowed to act on the air bag 4.

[0150] As shown in FIG. 6, when the external air pressure is less than the internal air pressure of the hollow tube 3, the air bag 4 is shielded by the shielding part 5; as shown in FIG. 7, when the external air pressure is greater than or equal to the internal air pressure of the hollow tube 3, the air bag 4 enters the hollow tube 3 under the action of the external air pressure and is exposed from the shielding part 5, which indicates that the polycarbonate vacuum plate has leaked, for example. The air bag 4 can be provided in a conspicuous color, such as red.

[0151] Embodiment 4

[0152] This embodiment provides a preparation method of a polycarbonate vacuum plate, comprising:

[0153] Step A: heat the open end 201 of the multi-layer polycarbonate plate body 2 to a hot melting temperature by a heating head, then extrude the hot melted open end 201 by a clamp, so that the molecules are fused, shaped, and then cooled to form a sealing part 202. Place a gas absorbent and / or the vacuum degree indicator in the multi-layer polycarbonate plate body 2.

[0154] As shown in Fig. 5, in step A, before hot melt sealing the one opening end 201, the baffle 203 inside the multi-layer polycarbonate plate body 2 is milled from the other opening end 201, so that the length of the baffle 203 is shortened by 2 cm (in the initial state, the end of the baffle 203 is flush with the opening end 201), and a channel is formed to connect the subspaces separated by the baffle 203 in the multi-layer polycarbonate plate body 2, as shown in Fig. 5. Then, high pressure gas is blown into the multi-layer polycarbonate plate body 2 from the other opening end 201 to blow the debris generated by milling out of the one opening end 201, so as to clean the multi-layer polycarbonate plate body 2. A gas absorbent and / or a vacuum degree indicator are placed inside the multi-layer polycarbonate plate body 2. After the channel is formed, as shown in Fig. 8, the other opening end 201 is heated to the hot melt temperature by a heating head, and then is extruded by a notched clamp 6. A cylindrical body 7 made of stainless steel is placed at the notched position to form an air exhaust pipe 1 with a channel connecting the subspaces and the space outside the multi-layer polycarbonate plate body 2. After waiting for cooling and setting, the stainless steel cylindrical body is pulled out. At this time, the air exhaust pipe 1 is not sealed.

[0155] Step B: The air exhaust pipe of the air exhaust device is inserted into the pipe of the air exhaust pipe 1 to perform air exhaust on the multi-layer polycarbonate plate body 2, and the air exhaust state or the sealed state is maintained according to the air exhaust machine. Specifically, for the air exhaust machine that cannot be sealed when air exhaust is stopped, the air exhaust state is maintained; for the air exhaust machine that can be sealed when air exhaust is stopped, the sealed state is maintained.

[0156] Step C: Corresponding to the embodiment shown in Fig. 1, the pipe opening of the air exhaust pipe of the air exhaust device is withdrawn from the position of the first section 101, for example, to the position of the sealing section 102, or to the pipe position on the side away from the air-exhausted object 100 of the sealing section 102 (not shown in Fig. 1), and is maintained to be inserted into the pipe of the air exhaust pipe 1 to continuously perform air exhaust, maintain the air exhaust state or maintain the sealed state; or the pipe opening of the air exhaust pipe is initially located at the position of the sealing section 102; or the pipe opening of the air exhaust pipe is initially located at the pipe position on the side away from the air-exhausted object 100 of the sealing section 102 (not shown in Fig. 1). The position of the first section 101 of the air exhaust pipe 1 is heated by a heating head to be softened and is extruded and clamped by a clamp to make the inner walls of the continuously extruded sections of the air exhaust pipe 1 adhere to each other to form the first section 101, so as to temporarily seal the pipe of the air exhaust pipe 1.

[0157] The suction pipe 9 is separated from the suction pipe 1, so that the inner wall and the outer wall of the sealing section 102 are in the atmosphere and the air pressure is equal. The sealing section 102 is in the normal air, and the clamp of the first section 101 is always under pressure, so there is no air leakage, so that there is no air pressure difference when the sealing section 102 is melted. Or when the vacuum pump stops vacuumizing, it cannot be sealed, and the suction pipe 9 can be temporarily left in the suction pipe 1, as shown in FIG. 10, and the pipe opening of the suction pipe 9 is located at the pipe position 901 away from the suction object 100 on the side of the sealing section 102.

[0158] The other part of the suction pipe 1, i.e. the part of the sealing section 102, is heated to the hot melting temperature by the heating head, and is hot melted and extruded, the molecules are fused and shaped, and then cooled to form the sealing section 102 to permanently seal the pipe of the suction pipe 1. The clamp is removed from the extrusion of the first section 101, and the inner wall of the first section 101 is maintained in close contact or a gap is formed between the inner wall of the first section 101.

[0159] Finally, a vacuum is formed in the sealed polycarbonate vacuum plate, and the residual gas is further absorbed by the internal gas absorber, reducing the air density in the plate. The PC vacuum plate has very good heat and sound insulation effect.

[0160] The temporary sealing of the first section 101 and the sealing of the sealing section 102 to the pipe of the suction port are achieved by heating and extruding the pipe of the suction port, so the outer wall of the first section 101 and the outer wall of the sealing section 102 have traces of being extruded inward, and there are structures that are extruded inward, and the traces of being extruded inward include two inwardly recessed areas formed on the opposite outer walls of the pipe by the extrusion equipment on both sides of the pipe, as shown in FIG. 10, and such traces also form clamping surfaces by the pressure clamping of the clamp, for example, the clamping surfaces formed on the opposite outer walls of the pipe are flat.

[0161] In this embodiment, it is assumed that the temporary sealing of the first section 101 is not formed, but the continuous suction and direct hot melting and extrusion to form the sealing section 102 are attempted, and the part of the suction pipe 1 at the position of the sealing section 102 is very soft when it reaches the hot melting temperature and is sucked away by the suction pipe and the polycarbonate vacuum plate. It can be seen that the temporary sealing of the first section 101 solves the technical problem of avoiding the hot melting position from being sucked away.

[0162] If the temporary seal is not formed by the first section 101, but the vacuum pump is stopped to maintain the sealing state (the vacuum pipe 9 is not separated from the vacuum pipe 1) and the sealing section 102 is directly formed by hot melting and extrusion, the air pressure on the inner wall side of the sealing section 102 is far less than the atmospheric pressure on the outer wall side, and the sealing section 102 is pressed into the vacuum pipe 9 by the atmospheric pressure when it is hot melted, that is, it is still sucked away by the vacuum pipe 9. However, if the sealing state is not formed when the vacuum pump is stopped, the atmosphere is connected to the vacuum pipe 9 through the vacuum pump, and the sealing section 102 is not pressed into the vacuum pipe 9 by the atmospheric pressure when it is hot melted.

[0163] In a variation corresponding to the embodiment shown in FIG. 1, the variation is that the positions of the first section 101 of the vacuum pipe 1 and the sealing section 102 are first softened and extruded by the clamp, then the first section 101 is temporarily sealed, and then the sealing section 102 is hot melted.

[0164] In another variation corresponding to the embodiment shown in FIG. 2, the variation is that the pipe opening of the vacuum pipe is withdrawn from the position of the first section 101 and still remains inserted in the vacuum pipe 1 (not shown in FIG. 2), or the pipe opening of the vacuum pipe is always inserted in the vacuum pipe 1 and always does not reach the position of the first section 101, maintaining continuous vacuum pumping. The positions of the first section 101 on both sides of the sealing section 102 of the vacuum pipe 1 and the position of the sealing section 102 are first softened and extruded by the clamp, so that the inner wall is attached to form a temporary seal at the first section 101, the sealing section 102, and the first section 101 arranged in FIG. 2 in turn, and then the sealing section 102 is hot melted (the clamp is heated to a set temperature at the sealing section 102); wherein the first section 101 on both sides of the sealing section 102 is temporarily sealed, and the sealing section 102 on both sides is free of air pressure difference and is sealed, so as to avoid the hot melted inner wall being pushed by the air pressure difference. The temporary sealing of the first section 101 between the position of the pipe opening of the vacuum pipe and the sealing section 102 solves the technical problem of avoiding the hot melted position being sucked away by the vacuum pipe, and the temporary sealing of the first section 101 between the sealing section 102 and the object 100 being vacuumed solves the technical problem of the hot melted position being sucked away by the PC vacuum plate.

[0165] In yet another variation corresponding to the embodiment shown in FIG. 3, the variation is that the positions of the first section 101, the second section 103, and the sealing section 102 are first softened and extruded by the clamp, so that the inner wall is attached, then the position of the first section 101 is temporarily sealed, and then the sealing section 102 is hot melted; the temporary sealing of the first section 101 solves the technical problem of avoiding the hot melted position being sucked away.

[0166] In this embodiment, the heating temperature of the hot melting is greater than or equal to 160°C, and the heating temperature of the softening is greater than or equal to 130°C and less than or equal to 140°C.

[0167] Embodiment 5

[0168] As shown in Fig. 9, in the present embodiment, the suction interface is the opening section 209 of the multilayer polycarbonate plate body 2. The component of the vacuum pump that is in contact with the opening section 209 of the multilayer polycarbonate plate body 2 is a vacuum pipe or a vacuum sleeve. The vacuum pipe can be connected to the opening section 209 at any position, preferably at a position that avoids the first section 101 and the sealing section 102. The vacuum sleeve is sleeved on the opening section 209 at a position that avoids the first section 101 and the sealing section 102 during vacuuming, so that the outer surface of the opening section 209 at the position of the first section 101 and the sealing section 102 is always in the air, which allows the heating clamp to press and hold the first section 101 and the sealing section 102.

[0169] Specifically, the preparation method of the polycarbonate vacuum plate comprises:

[0170] The opening end 201 of the multilayer polycarbonate plate body 2 is heated to a hot melting temperature by a heating head, and then the hot melted opening end 201 is extruded by a clamp to fuse and shape the molecules, and then cooled to form a sealing part 202. In the present embodiment, the vacuum spaces formed by the partitions 203 in the multilayer polycarbonate plate body 2 are not connected to each other and are isolated from each other, so that the leakage of a vacuum space does not affect the sealing of other vacuum spaces. Of course, as a non-limiting example, a gas absorber and / or a vacuum degree indicator can be placed in one or more vacuum spaces inside the multilayer polycarbonate plate body 2.

[0171] The vacuuming step: the vacuuming sleeve of the vacuuming equipment is sealed to the other opening end 201, the multilayer polycarbonate plate body 2 is vacuumed, and the vacuuming state is maintained.

[0172] The sealing step: the first part of the opening section 209 of the other opening end 201 of the multilayer polycarbonate plate body 2 is heated and softened in the air and extruded, so that the inner walls of the extruded part of the opening section 209 are in close contact to form the first section 101, thereby temporarily closing the pipeline of the opening section 209; the second part of the opening section 209 is heated and extruded to form the sealing section 102, thereby permanently closing the pipeline of the opening section 209; the extrusion of the first section 101 is removed, and the inner walls of the first section 101 maintain close contact or a gap is generated between the inner walls of the first section 101.

[0173] In the sealing step, the first section 101 on both sides of the sealing section 102 of the opening section 209 and the position of the sealing section 102 are softened and pressed by the clamp, so that the inner wall forms a temporary seal at the first section 101, the sealing section 102 and the first section 101 arranged in sequence in FIG. 9, and then the sealing section 102 is heat fused (the clamp at the sealing section 102 is heated to a set temperature); wherein the first section 101 on both sides of the sealing section 102 is temporarily sealed, and the sealing section 102 on both sides has no air pressure difference and is sealed, so as to avoid the inner wall of the heat fusion position being pushed by the air pressure difference. The temporary sealing of the first section 101 between the air suction sleeve opening and the sealing section 102 solves the technical problem of avoiding the heat fusion position being sucked away by the air suction sleeve opening, and the temporary sealing of the first section 101 on the side away from the air suction sleeve opening of the sealing section 102 solves the technical problem of the heat fusion position being sucked away by the negative pressure in the PC vacuum plate.

[0174] Wherein the first section 101, the sealing section 102 and the first section 101 arranged in sequence are softened by using a constant temperature pressure head, including softening the part of the partition plate 203 located at the positions of the first section 101, the sealing section 102 and the first section 101 to achieve temporary sealing.

[0175] Embodiment 6

[0176] As shown in FIG. 11, the present embodiment provides a greenhouse as a plant growing room, which includes: a board 801 that can be spliced and detached, forming a plant growing space that can be closed or semi-closed to accommodate plants; and an environment adjusting system that controls the environmental parameters in the space to facilitate plant growth. By adjusting the parameters in the closed space, the quality and yield of plants can be greatly improved, for example, to supply vegetables for the family.

[0177] The closed or semi-closed plant growing space is a greenhouse, which has a floor, a roof and walls. The greenhouse is a light-transmitting structure that can basically meet the light needs of vegetable growth, and the greenhouse is easy to build and does not occupy a large space. Any one or more of the floor, the roof and the walls of the greenhouse uses a polycarbonate vacuum plate.

[0178] The wall is built by one or more polycarbonate vacuum panels and aluminum profile frames 802 which are processed to adapt to the shape and size. The polycarbonate vacuum panel has good light transmission and basically meets the needs of plants for light. The polycarbonate vacuum panel is light in weight, suitable for modular installation, low in cost, and high in reliability, and can resist strong winds and snowy weather. The polycarbonate vacuum panel is composed of two or more layers of overlapping structure, and a gap is formed between the layers. The vacuum space in the gap can play a role in temperature insulation. The layers are also provided with crossbeams perpendicular to the layers to increase the structural strength of the panel. The floor can be made of plastic wood floor, wood board, metal plate, plastic plate, polycarbonate vacuum panel, etc., and can be integrally formed or spliced. The formed plant growth space is about 3-6 meters long, 1.8-4 meters wide, and 2-4 meters high.

[0179] The building process of the closed or semi-closed plant growth space includes: leveling the foundation, building a rectangular bottom frame on the foundation, and the height of the rectangular bottom frame is 15-25 cm, and the material is light and strong aluminum alloy. The crossbeam is built on the foundation frame, and the floor is finally paved after the sunlight room is built.

[0180] The installation of the wall includes: the bottom frame is provided with a trench-shaped limiting groove with an opening upward, the polycarbonate vacuum panel is clamped by two aluminum alloy frames, one polycarbonate vacuum panel and two aluminum alloy frames form a splicing module, the two splicing modules are engaged, the bottom of each splicing module is inserted into the trench-shaped limiting groove, and the top is limited and connected into the crossbeam profile groove.

[0181] The environmental regulation system includes:

[0182] The temperature control system is configured to control the temperature in the space to facilitate the growth of vegetables. The temperature in the sunlight room will rise sharply when there is sunlight, far exceeding the high temperature that vegetables can withstand. At night without sunlight, the temperature will drop to close to the ambient temperature, which may exceed the low temperature that vegetables can withstand. The temperature difference between winter and summer is large, which brings great difficulty to the temperature regulation of the sunlight room. The plant growth system of the present application uses multiple ways to regulate the temperature, and adjusts the temperature when needed. The temperature regulation includes adjusting the overall temperature in the space and adjusting the temperature of the nutrient solution flowing through the roots of the plants. At the same time of regulating the temperature, attention should also be paid to ensuring the light and humidity required for plant growth to adapt to plant growth.

[0183] The irrigation control system is configured to control the irrigation time and frequency of the nutrient solution and / or water irrigated to the roots of the vegetables to facilitate the growth of the vegetables. Different plants require different irrigation strategies, and the irrigation strategy also needs to be adjusted in real time according to the changes in light, temperature and humidity.

[0184] An illumination control system configured to control the illumination on the vegetables to facilitate the growth of the vegetables, including shading and light supplement as needed; the illumination control system in the present application can be linked with the temperature control system.

[0185] A gas control system configured to control the humidity, oxygen, and carbon dioxide concentration in the space to facilitate the growth of the vegetables; the humidity, oxygen, and carbon dioxide concentration affect the photosynthesis and respiration of the plants, and the gas control system needs to monitor and control the humidity, oxygen, and carbon dioxide concentration in real time.

[0186] A nutrient solution control system configured to control the element concentration of the nutrient solution irrigated to the roots of the vegetables to facilitate the growth of the vegetables. Different vegetables require different element concentrations, and therefore, the nutrient solution control system needs to control the nutrient solution preparation for different vegetables.

[0187] The temperature control system includes one or more of the following:

[0188] The first light adjustment device is configured to adjust the area of the natural sunlight blocked by the space top and side. As shown in FIG. 15, a sunshade curtain can be used to block the light in real time, and the temperature in the sunlight room can be reduced immediately in summer. The sunshade curtain 803 can be driven by a motor, and the degree of automation is high. When the temperature is too high, the sunshade curtain can automatically operate according to the instruction of the temperature control system. In addition, the sunshade curtain 803 can control the area of the blocked area at will, and the temperature adjustment flexibility is high. The curtain cloth material of the sunshade curtain 803 can be selected from sunlight fabric, which can effectively block infrared rays and can better reduce the temperature. The first light adjustment device includes a sunshade curtain capable of covering the roof of the sunlight room. The sunshade curtain 803 includes a track, a motor drive device 809, a pull rod arm 811 and a curtain 810. The track is arranged on the roof of the sunlight room, and the bottom surface of the track is fixed or integrated with the ridge. The track can be in the form of an upper cover and a lower cover structure, or in the form of an I-beam, which limits the running direction of the motor and protects the motor and other rotating structures from being affected by wind and rain. The motor drive device includes a motor and a speed reduction transmission device. The pull rod arm is fixedly connected to the motor drive device and is driven by the transmission device to move left and right along the track. The upper and lower edges of the curtain are provided with slidable rings, which are sleeved on two curtain tracks parallel to the track. The left edge of the curtain is fixedly connected to the left roof beam, and the right edge of the curtain is connected to the pull rod arm. When the pull rod arm moves left and right, it drives the curtain to move left and right, thereby achieving the sunshade requirement of the sunlight room. In the first embodiment, the spring applies pressure to generate friction between the track and the motor-driven wheel, so that the motor-driven wheel can roll relative to the track, thereby realizing the movement of the transmission device. In the second embodiment, the wheel can be replaced by a gear, and the track has a rack. The friction generated by the meshing of the gear and the rack enables the motor to move relative to the track. The motor is connected to two wing structure pull rod arms on both sides, which can be expanded or folded to cover the sunshade cloth. Further, the motor can be fixed to one end or both ends of the track, and a chain structure is arranged in the track. The motor drives the chain to rotate, and the chain drives the two wing structure pull rod arms to slide. The wing structure pull rod arm has a sliding limiting track, which includes an upper end curtain track connected at a certain height of the two gables. The wing extends outward by a distance at the end of the roof ridge. The ends of the two extended sections intersect to form an end curtain track. The end of the wing has a limiting ring sleeved on the end curtain track.

[0189] The second light adjustment device is configured to provide light source directly illuminating inside the space. The light supplement lamp can be used as the supplementary light source in winter when sunlight is insufficient or in rainy days. When the light supplement lamp is turned on, heat is generated, which can be used as the heat source for heating the space. The appropriate light supplement amount of the light supplement lamp can be achieved by adjusting the light supplement time or the light intensity of the light supplement lamp. When the leafy vegetables are planted in the multi-layered and overlapped platform type planting tank, the light supplement lamps are uniformly installed on the bottom surface of the planting tank. The light supplement lamps on the bottom surface of the upper layer of the planting tank are aligned with the leafy vegetables in the lower layer of the planting tank to achieve the light supplement effect. The leafy vegetables on the topmost layer can absorb the most sunlight during the day, and thus do not need light supplement.

[0190] The first air exchange device is configured to adjust the air power source to provide the air pressure difference between the inside and outside of the space by inhaling or discharging the air in the space. As shown in FIG. 12, for example, 2-8 fans 805 are arranged at intervals on the south wall at a certain height, or 1 fan 805 is arranged, and the height is capable of forming an air flow path with the second air exchange device and / or the first water circulation device, for example, 200 cm. The outer side of the fan 805 is provided with a baffle to prevent cold air from entering the interior of the sunlight room through the gap of the fan in winter to cause low temperature. The baffle is provided with an electromagnet device. When the electromagnet is powered on, the baffle can be attracted and closed with the wall of the sunlight room. When the electromagnet is powered off, the air discharged by the fan pushes away the baffle to form an air flow passage. In the attracted and closed state, the baffle forms an angle with the vertical plane, and the angle is between 5 degrees and 30 degrees, for example, the angle is 5 degrees, 10 degrees, 15 degrees, 20 degrees, 25 degrees or 30 degrees. The installation position of the fan 805 is various, including the wall, the gable and the roof, etc. In order to facilitate operation, it is better to be installed on the wall or the gable, for example, 2-8 exhaust fans are arranged at intervals on the west wall or the south wall or the west gable at a certain height (higher than 20 cm to prevent inhaling objects such as ground viruses), or 1 fan 805 is arranged. Since the exhaust fan generates negative pressure, the air flow direction in the sunlight room is from north to south or from east to west. At this time, facilities capable of introducing external air are arranged on the north wall or the east wall. Since the ventilation of the sunlight room is mainly for cooling, the cold air can be filled to replace the hot air, that is, the air flows from the cold area to the hot area until it is discharged from the sunlight room.

[0191] The second ventilation device is configured to adjust the air free-flow contact area between the space and the outside. For example, 1-2 skylights are arranged at a certain height on the north roof, the skylights are driven by a motor to adjust the opening angle of the skylights. The setting position can be linked with other equipment such as fans, air inlets and outlets, etc., or the skylights are arranged on the west gable or the south wall, the setting position can be linked with other equipment such as the air inlet fan 805, the water curtain curtain 804, etc., the skylights are driven by a motor to adjust the opening angle of the skylights.

[0192] The first water circulation device is configured to adjust the temperature and humidity in the space and to exchange air with the outside. The first water circulation device includes a water curtain and a mask. As shown in FIG. 14 and FIG. 16, the water curtain 804 installed on the north wall is a semi-closed heat exchange and ventilation device installed on a polycarbonate vacuum panel. According to the need to adjust the temperature and humidity, the water pump is opened to supply water to the water pipe from the collection tank. The water pipe is arranged at the top of the water curtain 804. The water flowing down the water pipe is distributed to the surface of the polymer material layer, which is made of kraft paper or other polymer material layer. When there is a pressure difference between the inside and outside of the sunlight room, the air flowing through the water curtain will cause the water on the surface of the kraft paper to evaporate, thereby removing a large amount of heat to achieve the purpose of cooling. The water flowing down the kraft paper finally flows into the collection tank, which is equipped with a UVC sterilization and disinfection device. The north wall is provided with a hollow cross-section notch, and the water curtain 804 is embedded in the hollow cross-section notch. An aluminum alloy frame is installed on the cross-section notch, so that the water curtain can bear its weight by the frame. The mask seals the water curtain 804 by covering the cross-section notch from the outside, thereby preventing external air from entering the sunlight room through the water curtain when sealing is required. Alternatively, the mask seals the water curtain by covering the cross-section notch from the inside. The water curtain includes a top water pipe and a bottom recovery device, as well as an open heat exchange and ventilation device. The basic material of the heat exchange and ventilation device is kraft paper or polymer material, and the basic structure is honeycomb-shaped. The kraft paper or polymer material is a curved wave-shaped rectangular strip, with the length direction perpendicular to the ground and the width direction perpendicular to the wall. The waves between the two layers of kraft paper or polymer material form a plurality of small pores, thereby forming a honeycomb structure. The water flowing out of the top water pipe falls naturally and flows through the heat exchange and ventilation device. Due to the negative pressure in the space provided by the fan installed opposite to the water curtain, external air will enter the space through the heat exchange and ventilation device, and the water will be vaporized when flowing through the heat exchange and ventilation device, thereby removing the heat in the air. The bottom recovery device is a water tank with a slight angle, which collects the dripping water into the water tank for recycling. When the water level sensor detects that the water level in the water tank is below the warning value, the solenoid valve is automatically opened for water replenishment. The water tank is also equipped with a sterilizing UVC LED lamp to kill viruses and bacteria in the water tank. The structure of the water curtain is basically integrated with the sunlight room. In this embodiment, the area and air volume of the water curtain are controlled to make the wind speed flowing through the water curtain reach 1-3 m / s, so that the humidity and cooling reach a reasonable state. The water curtain is installed on the north wall, and the fan is installed on the south wall to form a convection loop, so that the air in the entire sunlight room flows uniformly. Alternatively, the water curtain is installed on the east wall, and the exhaust fan is installed on the west wall to form a convection loop, so that the air in the entire sunlight room flows. In terms of quantity, the water curtain can be arranged in 2 or 3 rows from top to bottom, and the fan can also be arranged in 2 or 3 rows, so that the temperature and humidity in the room are evenly distributed.

[0193] More specifically, as shown in FIG. 16,

[0194] The water pump 8047 pumps the sterilized water from the water tank with the UVC sterilization lamp 8046 to the top water pipe above the multi-layered kraft paper layer 8042, and the water leaks from the top water pipe hole 8041 to the multi-layered kraft paper layer 8042, and when the wind blows to the multi-layered kraft paper layer 8042, the water molecules of the wet multi-layered kraft paper layer 8042 enter the interior space of the sunlight room where the plants are distributed, achieving the effect of cooling and humidifying the interior space. Then, the water flows to the bottom water collecting pipe 8043 through the multi-layered kraft paper layer 8042, and after being collected, it flows into the water tank. The water tank is provided with a high water level sensor 8044 and a low water level sensor 8045, and when the high water level is detected, the electromagnetic valve is controlled to be closed to stop water supply, and when the low water level is detected, the electromagnetic valve is controlled to be opened to supply water.

[0195] The second water circulation device, such as a spray head, is arranged at the top of the space and can directly spray clean water into the space at a time or according to the temperature and humidity needs. The spray head can include a spraying device connected to the above-ground conveying pipeline; the spraying device includes a high-pressure water pump and a spray head, the high-pressure water pump pumps clean water to the spray head on the roof of the sunlight room to form an aerosol, achieving cooling and humidifying, and the spray head can be connected to the water curtain curtain supply pipe and branched.

[0196] The third water circulation device transfers heat between air and soil through the underground water circulation system to realize heat exchange between the interior air of the sunlight room and the underground soil. The third water circulation device includes: a liquid storage tank configured to store clean water; a fluid pipeline configured to convey clean water to the sunlight room PC board and return the clean water to the liquid storage tank, an underground heat exchanger configured to exchange heat between the clean water flowing through the heat exchanger and the underground soil or liquid surrounding the heat exchanger; the fluid pipeline includes an underground conveying pipeline, an above-ground conveying pipeline, an above-ground return pipeline and an underground return pipeline, and the underground heat exchanger can make the temperature difference between the clean water and the underground soil or liquid less than 1 degree Celsius. The heat exchanger is located at a depth of 200 cm below the ground, the surrounding soil has a large temperature difference with the environment, and it is warm in winter and cool in summer.

[0197] The light control system includes the first light adjustment device and the second light adjustment device.

[0198] The gas control system includes the first air exchange device, the second air exchange device and the first water circulation device.

[0199] The plant cultivation method provided by the embodiment includes one or more of the following:

[0200] An aeroponic method can be adopted, i.e. a plant growth frame is built, a plurality of holes are arranged on the plant growth frame, for example, on a slope, a wall or a reverse V support, a plant is planted through the hole, the root is exposed to the side of the slope facing the ground, or the back side of the wall facing the light, or the inner side of the reverse V support, the leaves or fruits are exposed to the side facing the sunlight, and the nutrient solution is transported to the spray head of the high-pressure pump through the transmission pipe. The spray head is arranged at a position just capable of spraying the nutrient solution to the root of the plant. The method can provide good configuration of fertilizer, water and oxygen for the root, the oxygen is fully dissolved in the nutrient solution, and the nutrient solution is fully mixed with the air, so that the plant root has high environmental temperature tolerance, and the quality and yield of the plant are greatly improved. However, the spray head is easily blocked by impurities (nutrient solution precipitates, washed organic matter and the like), causing the locked-rot effect of the motor, and the motor is burned out, so that the service life of the high-pressure water pump is short. In addition, since the plant root needs to be uniformly sprayed and irrigated, a spray head needs to be installed at a distance, and a transmission pipe also needs to be laid, so that the whole device is complex to install, and the inner side of the reverse V support has a large closed space, which is easily heated under sunlight. A light-colored plant growth frame can be selected to overcome the problem, and each growth frame needs to independently occupy a certain space, so that high-density planting cannot be realized.

[0201] A hydroponic method can also be adopted, i.e. the root of the plant is soaked in the nutrient solution. The method is simple to control, the irrigation device is simple and low in cost, but the temperature and nutrient solution concentration tolerance are lower than those of the aeroponic method. A multi-layer petal type plant frame is a kind of hydroponic method, and the disadvantage is that the plant root is easily infected with mold, causing the plant root to rot. The plant frame is a hollow column, the hollow space in the column has a transmission pipe from bottom to top, the nutrient solution is transported to the top of the column by the transmission pipe, and naturally drips to the plant root under the action of gravity, and the stems and leaves of the plant grow on the outer side of the column.

[0202] A substrate planting method can also be adopted, i.e. the root of the plant is planted in the substrate of a growth tank, and the substrate is infiltrated with the nutrient solution. The substrate can be coconut husk, ceramsite or the like. The temperature release of the coconut husk is good, and the temperature change of the plant root is prevented. In addition, the transportation cost of the coconut husk is low, the un-soaked coconut husk block can be transported and stored, and the coconut husk is expanded by 12 times when used. However, the coconut husk produces contaminated water when soaked, and waste treatment is also needed. The method can slow down the volatilization of the nutrient solution, and is easy to keep warm, but the substrate treatment is complex. The growth tank is rectangular, a water pump is arranged at a distance, and the water pump drips the nutrient solution to the coconut husk; the temperature release of the ceramsite is slightly worse than that of the coconut husk, and the ceramsite cannot be soaked and transported, and the transportation cost is high. However, the ceramsite is relatively clean, and does not produce sewage, and is also a good substrate for soilless culture.

[0203] A tidal irrigation method can also be adopted, i.e. the root of the plant is soaked in the nutrient solution at a certain time, and the nutrient solution is drained after a certain time. The method makes the plant not easy to breed mold.

[0204] The water culture method and the tidal irrigation method can place the plant roots in perlite and / or ceramic granules. A growth plate can be fixed on the edge of the plant growth tank. Holes are arranged on the growth plate. The plant roots are downward and the leaves are upward. The plant roots pass through the holes and naturally fall into the plant growth tank. Each plant can be planted in a growth cup. The growth cup is open upward and passes through the hole. The diameter of the growth cup at the bottom is smaller than the hole, and the diameter of the growth cup at the top is larger than the hole, so that the growth cup is buckled and suspended in the hole of the growth plate.

[0205] As shown in FIG. 12, the irrigation control system includes one or more of the following:

[0206] The first irrigation device 808 is configured in a groove shape and is located on the north side and / or the west side of the sunlight room for water culture planting or tidal irrigation method to cultivate leaf vegetables and seedlings. A plurality of first irrigation devices can be arranged in layers, for example, a plurality of triangular support frames are arranged horizontally on the wall. A bearing strip plate is fixed on the triangular support frame. The first irrigation device is placed on the bearing strip plate. A bearing strip plate is arranged on the wall at a height of 0 cm, 75 cm and 150 cm, respectively, so as to realize high-density planting. A bearing strip plate can also be arranged on the wall at a height of 40 cm, 110 cm and 180 cm, respectively.

[0207] The second irrigation device is configured in a column shape and is located in the middle of the sunlight room. A plurality of petal-shaped grooves are arranged in layers along the axis for containing plants, or holes are arranged along the radial direction for plants to stretch out leaves, and the roots of the plants are left inside the column shaft. The second irrigation device can be used for the tidal irrigation method (the system calculates the time for the water pump to transport nutrient solution to the top of the column shaft, and the nutrient solution flows through the petal-shaped grooves layer by layer until it flows back to the nutrient solution pool at the bottom).

[0208] The third irrigation device is configured in a groove shape and is located on the east or west side of the sunlight room for containing substrate, such as coconut husk, which is soaked with nutrient solution, for planting fruits and vegetables. A climbing frame hung vertically on the beam of the roof is provided to the third irrigation device for plants to climb.

[0209] The nutrient solution control system includes:

[0210] The liquid storage tank, i.e. the nutrient solution pool 806, is installed on the floor of the sunlight room. It is a cuboid water tank, and a bag-shaped structure is formed by the double-layer soft outer skin made of PVC material. The bottom corners are fixed to form the water tank bottom, which is placed on the floor below each plant planting area. A bag-shaped structure is formed by the double-layer soft outer skin, and the double-layer soft outer skin is inflated to become a water pool with a flat bottom. When not inflated, it can be rolled into a ball or a column, and the installation and transportation cost is lower. Alternatively, the water tank is composed of multiple connected foldable plates. The double-layer soft outer skin made of PVC material forms a bag-shaped structure, and the PVC hollow plates are placed flat in the double-layer soft outer skin. Each PVC plate is connected together by the double-layer outer skin and is isolated from each other. This structure has heat preservation effect and can fold the water tank, reducing the installation and transportation cost. Each type of plant can correspond to a nutrient solution pool to achieve the best nutrient solution ratio for different plants.

[0211] The fertilizer adding pool is installed on the north wall of the sunlight room, above the floor and not blocked, which is convenient for users to configure element fertilizers. It can avoid bending down to add fertilizer to the nutrient solution pool under the planting rack, and it is convenient to pour the nutrient solution pool after stirring in the table basin. The fertilizer adding pool is an open-top water tank. The fertilizer adding pool has a flushing device connected to the nutrient solution pool by a water pipe. The nutrient solution pool has a stirring device to dissolve the fertilizer or waste liquid in water. The flushing device is used to flush the liquid in the fertilizer adding pool into the nutrient solution pool.

[0212] Three types of containers containing fertilizers can be provided to users, such as bags and bottles, which are referred to as fertilizer bag A, fertilizer bag B, and fertilizer bottle C. Each fertilizer container does not chemically react with each other. Fertilizer bag A contains a large amount or medium element solid compound, fertilizer bag B contains a large amount or medium element solid compound, and fertilizer bottle C contains a trace element compound. Because the required mass is small and difficult to weigh, it is dissolved in water and stored in the fertilizer bottle C. The elements required for various vegetables in the three types of fertilizers, i.e. fertilizer bag A, fertilizer bag B, and fertilizer bottle C, are strictly proportioned. The amount of fertilizer ABC provided to the user is strictly calculated according to the volume of each fertilizer addition. The amount of fertilizer added at a time is just one bag A, one bag B, and one bottle C. The fertilizers in the fertilizer bag A, the fertilizer bag B, and the fertilizer bottle C are dissolved in water and then flow into the nutrient solution pool through the fertilizer adding pool.

[0213] The fertilizer adding pool can also have multiple water tanks. The water tank has multiple water pipes at the bottom end, and the water pipes are controlled by respective water valves to be turned on or off. Each water pipe is connected to a nutrient solution pool. When preparing the nutrient solution, different fertilizers can be introduced according to the needs of different plants, and then clean water is discharged above the fertilizer adding pool to mix and stir the fertilizers. After the fertilizers are dissolved, the water pipe switch connected to the nutrient solution pool corresponding to the plant is opened to add fertilizer to the nutrient solution pool.

[0214] In the preferred embodiment, different fertilizers are poured into different measuring cups, water is added and stirred to uniformity, poured into the fertilizer adding pool, the corresponding water valve is opened to introduce the corresponding nutrient solution pool, then a little clean water is added to wash the fertilizer adding pool, and then introduced into the corresponding nutrient solution pool. The reason for not stirring in the fertilizer adding pool is that the inner wall of the fertilizer adding pool is irregular in shape, so as to avoid the solid fertilizer from being unable to fully dissolve in the gap and causing residue.

[0215] The conveying pipeline 807 is connected to the nutrient solution pool 806 respectively to convey the nutrient solution to the roots of the plants.

[0216] Inside the plant growth room, the southeast side can be arranged with multiple layers of the first irrigation device for planting sprout vegetables and leaf vegetables, the north side can be arranged with the third irrigation device for irrigating fruit vegetables, and the middle can be placed with the second irrigation device for planting leaf vegetables. A water curtain is arranged on the north wall, a skylight is arranged on the north roof, a fan is arranged on the south wall, a sunshade curtain is arranged on the roof, a light supplementing lamp and a spray head are arranged on the roof, and a nutrient solution pool for different plants is arranged on the floor. A door is arranged on the west wall, a liquid storage pool is arranged in the northwest corner, and an operation table or a storage rack is arranged in the southwest corner. The positions of all irrigation modes in the room can be freely adjusted.

[0217] The first irrigation device 808 is a rectangular water tank composed of multiple connected foldable plates. A double-layer soft outer skin made of PVC material forms a bag-shaped structure, and PVC plates are placed flat in the middle of the double-layer soft outer skin. Each PVC plate is bonded together by the double-layer outer skin to be isolated from each other. The PVC material and structure have a heat preservation effect and can make the water tank foldable, thereby reducing the installation and transportation cost.

[0218] The nutrient solution pool 806 supplies water to the first irrigation device 808 at the top through a water pump. The first irrigation device 808 is arranged obliquely, and has a negative pressure closed drainage device in the first irrigation device 808, including an inverted U-shaped negative pressure accommodating cavity with a drain pipe with an opening facing upward inside. The bottom end of the inverted U-shaped negative pressure accommodating cavity has a drainage port, and the height of the drain pipe is determined by the water retention time. The nutrient solution flowing into the first irrigation device 808 at the top flows along the oblique direction of the first irrigation device 808 to the end, and is drained into the next layer of the first irrigation device 808 by the pipeline at the end, and the cycle continues until it returns to the nutrient solution pool 806.

[0219] The top edge of the water tank has a clamping groove, a planting plate covers the top of the water tank and is placed on the clamping groove, the planting plate has holes, and planting cups are inserted into the holes. The roots of the plants in the planting cups fall into the water tank, and the depth of the water tank is 0.5-20 cm. The side of the planting cup is not closed, and the plants are allowed to grow freely.

[0220] The present embodiment divides all the fertilizers into three kinds, two of which are compounds of macro or medium elements, and one is a compound of trace elements. The distribution of macro elements is to divide the compounds that do not chemically react with each other into two kinds of fertilizers in proportion. According to the size of the nutrient solution pool, the required amount of fertilizer is calculated, and two small bags of solid A and B are packed respectively. The third kind is trace elements, which is too small to be weighed. They are dissolved in water, and according to the size of the nutrient solution pool and the proportion of use, the required amount of PH value is calculated, and a certain acid is added together and packed in a bag C. There are three bags of A, B and C.

[0221] Compared with the all-solid method, the two-solid and one-liquid method greatly improves the accuracy of nutrients; compared with the all-liquid method, the volume and weight are greatly reduced. According to experiments, this configuration method of nutrient solution fully meets the requirements of vegetable growth.

[0222] The suitable temperature range for most vegetable growth is 10-28℃. The temperature in the closed sunlight room without heating measures at night is basically close to the outdoor temperature, and the sunlight room is easily 20-30℃ higher than the outdoor temperature during the day due to solar radiation. Temperature regulation is related to the success or failure of vegetable growth. Only using exhaust fans to exhaust hot air in the room to the outside, the cooling effect is not very good. On this basis, preferably, the present embodiment increases the sunshade curtain, and it is found that this scheme greatly reduces the illumination time while increasing the cooling effect, and the vegetable yield decreases obviously, and the indoor temperature is still unable to be lower than the outdoor temperature, so the indoor temperature in high temperature weather is still not suitable for vegetable growth. On this basis, preferably, the present embodiment increases the water curtain curtain, and the water on the water curtain is vaporized by the wind and will take away a lot of heat, so that the indoor temperature can be reduced by more than 10 degrees Celsius than the outdoor temperature, and the three cooperate to reduce the temperature in the sunlight room under the premise of the maximum possible illumination in the sunlight room. If it is necessary to increase the temperature in the sunlight room, resistance wires are used for heating. Preferably, the present embodiment meets the temperature while meeting certain humidity requirements, which is more conducive to the suitable conditions for vegetable growth. Through repeated experimental verification from winter to summer and from summer to winter for environmental linkage regulation, the comprehensive regulation method of the water curtain, the fan, the sunshade curtain and the indoor resistance wire heating adopted by the present embodiment is low in cost and effectively controls the temperature and humidity in the sunlight room within a reasonable range all year round. The humidity VPD=0.61078*exp(17.27*Ta / (Ta+237.3))*(1-RH) value is controlled within the range of 0.8-1.2 suitable for vegetable growth. Among them, Ta represents the environmental temperature in Celsius, and RH represents the relative humidity. The value of VPD is in the range of 0.8-1.2, which is a better interval for vegetable growth.

[0223] As shown in FIG. 17, the present application also provides a fertilizer preparation and application system for a sunlight room, which comprises:

[0224] a low liquid level sensor 702 arranged at a low liquid level position in the nutrient solution pool 806.

[0225] a high liquid level sensor 701 arranged at a high liquid level position in the nutrient solution pool 806.

[0226] a controller electrically connected with the low liquid level sensor and the high liquid level sensor, configured to open a tap water valve to add a preset amount of water to the nutrient solution pool 806 when the low liquid level sensor detects that the liquid level of the nutrient solution pool 806 is lower than a first preset position, and send a fertilization alarm signal to a mobile terminal, and open the tap water valve to add water to the nutrient solution pool 806 and stir until the high liquid level sensor detects that the liquid level of the nutrient solution pool 806 reaches a second preset position when a fertilization completion signal is received from the mobile terminal.

[0227] a mobile terminal configured to prompt a user to add required fertilizers and provide operation completion buttons corresponding to the fertilizers when the fertilization alarm signal is received, and send the fertilization completion signal to the controller when all the operation completion buttons of the fertilizers are triggered.

[0228] The application further provides a fertilization method for a sunlight room, which comprises the following steps:

[0229] S1: opening a tap water valve to add a preset amount of water to the nutrient solution pool 806 when a low liquid level sensor detects that the liquid level of the nutrient solution pool 806 is lower than a first preset position, and sending a fertilization alarm signal.

[0230] S2: prompting a user to add required fertilizers.

[0231] S3: opening corresponding fertilizer bags according to the required fertilizers, pouring the fertilizers into a measuring cup, adding water to stir, and then inputting the nutrient solution pool 806.

[0232] S4: opening a tap water valve to add water to the nutrient solution pool 806 until a high liquid level sensor detects that the liquid level of the nutrient solution pool 806 reaches a second preset position after all the fertilizers are added.

[0233] S5: stopping after stirring for a preset time.

[0234] After the fertilization is completed, the nutrient solution can be input into a delivery pipeline 807 by a water pump and transmitted to the roots of plants.

[0235] The entire configuration of the nutrient solution is composed of a fertilizer bag, a fertilization pool and a valve pipeline, an APP and a control system.

[0236] Taking a leafy vegetable fertilization process as an example:

[0237] 1、When the low liquid level sensor in the leaf vegetable nutrient solution tank detects a lack of nutrient solution, the system sends an alarm signal through the APP, notifying the user that the leaf vegetables need to be fertilized, and at the same time the system automatically opens the tap water electromagnetic valve to add a certain amount of tap water (as long as the nutrient solution is lacking, add some water to ensure that the leaf vegetables can be irrigated, the nutrient solution concentration is low at this time, and the leaf vegetables will continue to grow slowly, so even if the user does not add fertilizer for a long time due to some reason, the vegetables will still grow normally and slowly; if no water is added, the leaf vegetables will die after a certain period of time without irrigation).

[0238] 2、When the user starts to add fertilizer in the sunlight room, open the APP "leaf vegetable fertilizer", the APP prompts "add leaf vegetable A fertilizer", the user opens the A fertilizer bag, pours it into the measuring cup (it is not convenient to stir in the fertilizer tank, and some solids may not be dissolved), adds water and stirs until the A fertilizer is melted and poured into the fertilizer tank, opens the leaf vegetable valve, the A fertilizer flows into the nutrient solution tank, closes the leaf vegetable valve, opens the tap water, the user cleans the fertilizer tank, opens the leaf vegetable valve, and puts the cleaning liquid into the leaf vegetable nutrient solution tank, closes the leaf vegetable valve. Click "leaf vegetable A fertilizer is complete" on the APP, the system opens the leaf vegetable nutrient solution tap water electromagnetic valve to add water, and continuously dilutes the nutrient solution.

[0239] 3、The same method is used to add B and C fertilizers, and after adding, the APP displays "leaf vegetable fertilizer is complete", and the alarm signal "leaf vegetable needs to be fertilized" disappears. The system continues to add tap water until the high liquid level sensor in the nutrient solution tank detects that the nutrient solution is full, and the leaf vegetable tap water electromagnetic valve is closed. Open the leaf vegetable tap water stirring pump, stop after a certain period of time (the fertilizer needs to be fully dissolved for a certain period of time), and the leaf vegetable fertilizer is complete.

[0240] 4、The fertilizer tank is located on the wall and has several valves leading to each nutrient solution tank; advantage: can avoid bending down to add fertilizer to the nutrient solution tank located below the planting rack, and it is not convenient to open the cover of the nutrient solution tank.

[0241] 5、A, B, and C are solid fertilizers with a large amount of elements, and C is a liquid fertilizer with a small amount of elements. Advantage: lightest, smallest volume, most accurate, and most convenient for users to add (no need to weigh, just add 3 small bags directly).

[0242] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0243] The specific embodiments of the present application are described above. It needs to be understood that the present application is not limited to the specific embodiments described above, and various changes or modifications can be made by those skilled in the art within the scope of the claims, which does not affect the essential content of the present application. The embodiments of the present application and the features in the embodiments can be combined with each other at will without conflict.

Claims

1. A pumping interface having a sealed structure, characterized by, The air extraction interface is an air extraction pipe (1) or an open section (209); One end of the air extraction interface is connected to an air extraction object (100), and the sealing structure comprises a first section (101) and a sealing section (102) located in the air extraction interface; The inner walls of the pipeline of the air extraction interface at the location of the first section (101) are in close contact with each other or have a gap; The pipeline of the air extraction interface is closed at the location of the sealing section (102); Along the extension direction of the air extraction interface, greater than or equal to one first section (101) is located on the side of the sealing section (102) close to the air extraction object (100); Greater than or equal to one first section (101) is located on the side of the sealing section (102) away from the air extraction object (100); or, there is no first section (101) located on the side of the sealing section (102) away from the air extraction object (100).

2. The gas exhaust interface having a seal structure according to claim 1, characterized by, The material of the air extraction interface is polycarbonate; The first section (101) of polycarbonate is the part of the air extraction interface that allows extrusion molding after being heated and softened; The sealing section (102) of polycarbonate is the part of the air extraction interface that allows molding after being hot melted; The length of the first section (101) along the extension direction of the air extraction interface is greater than or equal to 1 mm, and the length of the sealing section (102) along the extension direction of the air extraction interface is greater than or equal to 1 mm.

3. The gas exhaust interface having a seal structure according to claim 1 or 2, characterized by, The sealing structure further comprises a second section (103) located in the air extraction interface; Along the extension direction of the air extraction interface, the second section (103) is located between the first section (101) and the sealing section (102) facing each other, and constitutes a thermal resistance between the two during heating processing; The length of the second section (103) along the extension direction of the air extraction interface is greater than or equal to 1 mm; The inner walls of the pipeline of the air extraction interface at the location of the second section (103) are in close contact with each other, or have a gap, or have a cavity; The second section (103) of polycarbonate is the part of the air extraction interface that allows extrusion molding after being heated and softened.

4. A polycarbonate vacuum panel, characterized by Comprise: A multilayer polycarbonate plate body (2) and the air extraction interface with a sealing structure according to any one of claims 1 to 3; The hollow interior of the multilayer polycarbonate plate body (2) comprises a vacuum space (200); The sealing part (202) of at least one open end (201) of the multilayer polycarbonate plate body (2) is integrally formed with the air extraction pipe (1) as the air extraction interface with a sealing structure according to any one of claims 1 to 3; or, a part of the multilayer polycarbonate plate body (2) forms an open section (209) as the air extraction interface with a sealing structure according to any one of claims 1 to 3.

5. The polycarbonate vacuum panel according to claim 4, characterized in that, The multilayer polycarbonate plate body (2) comprises a plurality of polycarbonate plates (204), and a plurality of partition strips (203) are connected between two polycarbonate plates (204) facing each other; The end of the partition strip (203) is spaced apart from the sealing position (202) of the open end (201), and the space (205) constitutes a passage connecting the subspaces (206) separated by the partition strip (103) in the vacuum space (200); The passage is located on the side of the sealing position (202) of the multilayer polycarbonate plate body (2) where the air exhaust pipe (1) is located.

6. The polycarbonate vacuum panel according to claim 5, characterized in that The vacuum space (200) is provided with a gas absorber and / or a vacuum degree indicator.

7. A vacuum degree indicator suitable for indicating the vacuum degree of the polycarbonate vacuum panel according to any one of claims 4 to 6, characterized in that, Comprise: A hollow pipe (3), an air bag (4) and a shielding part (5); The air bag (4) is sealingly sleeved on one end of the hollow pipe (3), the shielding part (5) is connected to the end of the hollow pipe (3) where the air bag (4) is located and extends axially outward, and the other end of the hollow pipe (3) is sealed; When the external air pressure is less than the internal air pressure of the hollow pipe (3), the air bag (4) is shielded by the shielding part (5); when the external air pressure is greater than or equal to the internal air pressure of the hollow pipe (3), the air bag (4) enters the hollow pipe (3) under the action of the external air pressure and is exposed from the shielding part (5).

8. The vacuum indicator of claim 7, wherein, Also comprising the air exhaust interface with a sealing structure according to any one of claims 1 to 3; The material of the hollow pipe (3) is polycarbonate; The other end of the hollow pipe (3) is integrally formed with the air exhaust interface.

9. A method of producing a polycarbonate vacuum panel, characterized by, Comprise: A vacuumizing step: connecting the air exhaust interface to the air exhaust interface of the multilayer polycarbonate plate body (2) to perform vacuumizing; A sealing step: heating and softening the first part of the air exhaust interface and extruding to make the air exhaust interface continuously extruded The inner walls of the first part are in close contact to form a first section (101) to temporarily seal the pipeline of the air exhaust interface; the second part of the air exhaust interface is heated and extruded to form a sealing section (102) to permanently seal the pipeline of the air exhaust interface; the extrusion on the first section (101) is removed, and the inner walls of the first section (101) maintain close contact or a gap is formed between the inner walls of the first section (101).

10. The method of producing a polycarbonate vacuum panel according to claim 9, characterized by, The air exhaust interface is an air exhaust pipe (1), and before the vacuumizing step, it further comprises: A pretreatment step: heating and extruding an open end of the multilayer polycarbonate plate body (2) to form a sealing position (202); Milling the partition strip (203) in the interior of the multilayer polycarbonate plate body (2) from the other open end of the multilayer polycarbonate plate body (2) to form a passage connecting the subspaces separated by the partition strip (203) in the multilayer polycarbonate plate body (2); heating and extruding at the other open end of the multilayer polycarbonate plate body (2) to form an air exhaust pipe (1) with a passage connecting the subspaces and the space outside the multilayer polycarbonate plate body (2); Alternatively, the air exhaust interface is an open section (209) of the multilayer polycarbonate plate body (2).

11. The method of producing a polycarbonate vacuum panel according to claim 10, characterized by, At least one first section (101) is formed on the side of the sealing section (102) close to the other open end of the multilayer polycarbonate plate body (2) along the extension direction of the air exhaust pipe (1). At least one first section (101) is formed on one side of the other open end of the sealing section (102) away from the multilayer polycarbonate plate body (2) along the extension direction of the air extraction pipeline (1), or no first section (101) is formed; The heating temperature of the hot melting is greater than or equal to 160 DEG C, and the heating temperature of the softening is greater than or equal to 130 DEG C and less than or equal to 140 DEG C; Before the vacuum extraction step, the multilayer polycarbonate plate body (2) is further provided with a gas absorber and / or a vacuum degree indicator according to claim 7 or 8.

12. A polycarbonate vacuum panel, characterized by, The polycarbonate vacuum plate is prepared by the method according to any one of claims 9 to 11.

13. A conservatory characterised in that, Comprise: The plate (8) can be spliced and disassembled to form a closed or semi-closed plant growth space; An environment adjusting system for controlling the environmental parameters of the plant growth space; The plate (8) comprises the polycarbonate vacuum plate according to any one of claims 4 to 6 or claim 12, or the plate (8) has the air extraction interface with a sealing structure according to any one of claims 1 to 3.

14. The sunroom of claim 13, wherein, The environment adjusting system comprises the following devices located on the air flow path of the sunlight room: A first air exchange device configured to adjust the air power source to provide a pressure difference between the inside and outside of the plant growth space by inhaling or exhaling air in the space; A first water circulation device configured to adjust the temperature and humidity in the plant growth space and exchange air with the outside; Further comprising any one or more of the following devices: A first light adjustment device configured to adjust the area of the natural sunlight blocked by the top of the plant growth space; A second light adjustment device configured to provide a light source directly irradiated on the inside of the plant growth space; A second air exchange device configured to adjust the contact area of the free air flow between the inside and outside of the plant growth space; A second water circulation device configured to spray clean water into the plant growth space at a certain time or according to the temperature; A third water circulation device configured to exchange heat between the air in the plant growth space and the underground soil outside; A first irrigation device configured as a groove located on the south side and / or east side of the plant growth space, using water culture or tidal irrigation method to cultivate plants; A second irrigation device configured as a column located in the middle of the plant growth space, with multiple layers of petal-shaped grooves distributed in the axial direction for containing plants, or holes extending in the radial direction for plants to stretch out leaves, with the roots left inside the column shaft, using the tidal irrigation method to cultivate plants; A third irrigation device configured as a groove located on the north side of the plant growth space, using drip irrigation method to cultivate plants; A fourth irrigation device configured as a hole support, with plants passing through the holes and roots located on the side away from the light, using the aeroponic method to cultivate plants; A plurality of nutrient solution pools (806) installed under or on the floor of the sunlight room; At least three fertilizer solution pools installed on the back wall of the sunlight room, with multiple water pipes at the bottom connected to different nutrient solution pools; Or a fertilizer liquid pool is installed on the back wall of the sunlight room, and the bottom is provided with a water pipe connected with the nutrient liquid pool; wherein the fertilizer liquid pool is located above the floor and is not blocked; A conveying pipeline (807) is connected with the nutrient liquid pool respectively to convey the nutrient liquid to the roots of the plants.

15. The sunroom of claim 14, wherein, The sunlight room further comprises a fertilizer mixing and adding system, wherein the fertilizer mixing and adding system comprises: A low liquid level sensor is arranged at a first preset position in the nutrient liquid pool (806); A high liquid level sensor is arranged at a second preset position in the nutrient liquid pool (806); A controller is electrically connected with the low liquid level sensor and the high liquid level sensor respectively, and is configured to open the tap water valve to add a preset amount of water to the nutrient liquid pool (806) when the low liquid level sensor detects that the liquid level of the nutrient liquid pool (806) is lower than the first preset position, and send a fertilizer adding alarm signal to a mobile terminal, open the tap water valve to add water to the nutrient liquid pool (806) and stir until the high liquid level sensor detects that the liquid level of the nutrient liquid pool (806) reaches the second preset position when a fertilizer adding completion signal of the mobile terminal is received; The mobile terminal prompts the user to add the required fertilizer and provides an operation completion button of the corresponding fertilizer when the fertilizer adding alarm signal is received, and sends the fertilizer adding completion signal to the controller when all the operation completion buttons of the fertilizers are triggered.

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