KR102626490B1 - Method for manufacturing double-layered meningeal circulatory sheath - Google Patents

Abstract

The present invention relates to a method of manufacturing a double-layer water film circulation envelope, and more specifically, to minimize indoor cooling/heating and lighting energy consumption throughout the four seasons by constructing a sloping ceiling and vertical walls in a glass greenhouse or a plastic double-layer greenhouse for smart farms, and to minimize high temperature In addition, it provides a two-layer water film circulation envelope that can realize a greenhouse close to zero energy by eliminating energy waste for cooling and heating even in low temperature periods. The air layer and the water film layer can be manufactured separately in a single process, and even after forming a closed circuit. This relates to an improved method of manufacturing a double-layer water film circulation shell to achieve high efficiency by eliminating water leakage problems and concerns about cracks or damage concentrated in the lower part of the plastic double-layer plate.

Description

{Method for manufacturing double-layered meningeal circulatory sheath}

The present invention relates to a method of manufacturing a double-layer water film circulation envelope, and more specifically, to minimize indoor cooling/heating and lighting energy consumption throughout the four seasons by constructing a sloping ceiling and vertical walls in a glass greenhouse or a plastic double-layer greenhouse for smart farms, and to minimize high temperature In addition, it provides a two-layer water film circulation envelope that can realize a greenhouse close to zero energy by eliminating energy waste for cooling and heating even in low temperature periods. The air layer and the water film layer can be manufactured separately in a single process, and even after forming a closed circuit. This relates to an improved method of manufacturing a double-layer water film circulation shell to achieve high efficiency by eliminating water leakage problems and concerns about cracks or damage concentrated in the lower part of the plastic double-layer plate.

Recently, among agricultural greenhouses, a water film cultivation method is being used, especially for low temperature periods (below 0°C), by layering two layers of plastic film (vinyl) and spraying groundwater at a constant temperature from the outside to the surface of the third side of the plastic film. .

However, to solve the problem of groundwater shortage, greenhouses for greenhouse cultivation under cyclical water film cultivation have begun to be used up to 30%, but a large amount of water is still required and installation of a circulation system such as large-scale pumping, water collection, underground heating, and filtration is necessary. Due to increased costs and uneven water film distribution and thickness, the surface temperature is uneven, and the overall transmittance of the two-layer plastic film is low, so the amount of photosynthetic active radiation (PAR) required for crop cultivation is low, which is disadvantageous for crop growth (Figures 1 and 2 reference).

In addition, polycarbonate (PC) and acrylic (PMMA) multilayer plates are being introduced for building exterior walls and smart farm greenhouse walls for reasons such as convenience of construction and cost reduction while increasing transparency and insulation.

At this time, PC and PMMA multilayer boards are good at blocking UV rays, but they have difficulty blocking visible rays and infrared radiant heat, which account for 97% of solar energy, making it difficult to lower the indoor temperature in high temperature periods.

In addition, in order to reduce solar radiation, it is necessary to attach a vinyl chloride film (PVC) containing a separate infrared blocker to the multi-layer water film circulating skin manufacturing method or separately coat the surface of the polyester (PET) film or multi-layer board with an infrared blocker. Infrared blocking products harden by ultraviolet rays and heat, causing yellowing, which reduces the radiant heat blocking performance. Their lifespan is less than 3 years, which is the same as that of general plastic films. When applied to smart farm greenhouses, etc., they inhibit the growth of crops, suppress the production of anthocyanin pigments, etc. The leaf area is reduced, and frequent construction causes waste of money and time, so it is gradually being avoided.

In relation to this, [prior art literature] describes an agricultural heat exchange plastic multi-layer plate in which two sheets of plastic are overlapped to form a zigzag water channel inside, and the upper and lower ends are formed with a water outlet and an inlet, respectively, to allow water to circulate, thereby enabling heat exchange. Alternatively, vinyl has been disclosed.

However, this structure consists of only a simple water circulation flow path, and because it is a closed circuit, there is a problem of water leakage due to water pressure. Since it is made using plastic double-layer plates or vinyl, it is not durable and easily bursts, and the water circulation stagnation phenomenon occurs due to the phenomenon of fullness. It has the disadvantage of being damaged when high pressure is applied.

Domestic Patent Publication No. 10-2006-0123825 (2006.12.05.) Agricultural heat exchange synthetic resin

The present invention was created to solve the problems in the prior art in consideration of the problems in the prior art as described above. By constructing a sloping ceiling and vertical walls in a glass greenhouse or a plastic double-story greenhouse for smart farms, indoor cooling/heating and lighting energy consumption are consumed throughout the four seasons. It provides a two-layer water film circulation envelope that minimizes the temperature and realizes a greenhouse close to zero energy by eliminating energy waste for heating and cooling in high temperature as well as low temperature periods. However, the air layer and water film layer can be manufactured separately in a single process. The main purpose is to provide an improved method of manufacturing a double-layer water film circulation shell so that high efficiency can be achieved by eliminating water leakage problems and concerns about cracks or damage concentrated in the lower part of the plastic double-layer plate even after a closed circuit configuration.

The present invention is a means for achieving the above object, including a first step of processing the multi-layer shell 100; A second step of assembling a water supply pipe 200 on the top of the multi-layer shell 100 processed in the first step; A third step of casting the water distribution pipe 300 at the bottom of the multi-layer shell 100 after the second step; A fourth step of completing the double-layer water film circulation envelope by constructing a water circulation flow path after the third step is provided.

At this time, the multi-layer shell 100 is processed from polycarbonate resin, and is provided with a plurality of in-line flow paths consisting of a first layer 110 and a second layer 120 filled with air or water; The water supply pipe 200 consists of a cylindrical main water intake pipe 210 and a plurality of branch pipes 220 branched from the main water intake pipe 210 and connected to the upper end of the water filled water channel of the multi-layer shell 100. It is formed of a PVC molding composition in which 20 parts by weight of terpenoid, 5 parts by weight of metal carbamic acid salt, and 15 parts by weight of polyvinyl butyral are mixed with 100 parts by weight of PVC; The water distribution pipe 300 includes a cylindrical chamber 310 with an empty interior, a plurality of connection pipes 320 that protrude in communication with the chamber 310 and are connected to the bottom of the water channel of the multi-layer shell 100, and , and includes at least one discharge pipe 330 connected to the chamber 310 to discharge the water contained therein to the outside, and the casting method connects and fixes each connection pipe 320 to the bottom of the water channel of the multi-layer shell 100. Process 1, the second process of preparing the casting mold (M), the third process of charging and placing the multi-layer shell (100)-water supply pipe (200) assembly into the prepared casting mold (M), and pouring the casting and Another characteristic is that it consists of a fourth process in which the double-layer shell and the water supply pipe are cast as one piece, and a fifth process in which the mold is demolded when curing is completed after the fourth process.

According to the present invention, the following effects can be obtained.

First, the insulation properties of glass windows or greenhouse walls, that is, radiant heat and conductive heat, can be actively changed as needed to minimize indoor cooling, heating, and lighting energy consumption throughout the four seasons.

Second, it makes it possible to grow strawberries during high temperatures in the summer, which has been difficult so far.

Third, it is possible to create a greenhouse that is close to zero energy by minimizing heating costs even in low temperature periods.

Figure 1 is a graph of photosynthetic active radiation required for general water photosynthesis.
Figure 2 is a graph of solar energy distribution and photosynthetic effective radiation (PAR) according to wavelength.
Figure 3 is an exemplary view of a double-layer shell used in the manufacturing method according to the present invention.
Figure 4 is an exemplary diagram of a water supply pipe used in the manufacturing method according to the present invention.
Figure 5 is an exemplary diagram of a water distribution pipe used in the manufacturing method according to the present invention.
Figure 6 is an illustration of a double-layer meningeal circulation envelope manufactured according to the present invention.
Figure 7 is a photograph of a greenhouse sample using a double-layer water film circulation envelope manufactured according to the present invention.
Figure 8 is a photo of the thermal imaging test of Figure 7.

Hereinafter, preferred embodiments according to the present invention will be described in more detail with reference to the accompanying drawings.

The method for manufacturing a double-layer water film circulation shell according to the present invention provides a method of casting a water supply pipe and a water distribution pipe on a double-layer shell to integrate them without causing water leakage or bursting due to water pressure.

In addition, the double-layer water film circulation envelope created in this way is divided into an air layer and a water film layer by forming a water film as water circulates, increasing the solar heat blocking effect, and is limited to use on sloping ceilings or walls such as glass greenhouses or smart farm greenhouses. This can be used to reduce indoor heating and cooling energy consumption.

This double-layer meningeal circulation envelope is manufactured in the following manner.

For example, the method for manufacturing a double-layer water membrane circulating shell according to the present invention includes a first step of processing a double-layer shell; A second step of assembling a water supply pipe on the top of the double-layer shell processed in the first step; A third step of casting a water distribution pipe at the bottom of the double-layer shell after the second step; It includes; a fourth step of completing the double-layer water film circulation envelope by constructing a water circulation path after the third step.

At this time, in the first step, the multi-layer shell 100 can be constructed in the same form as the example in FIG. 3.

That is, the double-layer outer shell 100 may be processed with any one selected from PMMA (Polymethly Methacrylate), PVC (PolyVinyl Chloride), or polycarbonate resin, but it is particularly preferable to process it with polycarbonate resin, which is environmentally friendly and has excellent durability and transparency. .

In particular, the multi-layer shell 100 has a multi-layer structure in which one flow path is made up of a first layer 110 and a second layer 120, and a plurality of these flow paths are made up to form one plate.

Therefore, this plate can be used as an inclined ceiling plate or vertical wall plate.

Additionally, these flow paths are formed inline and do not use a zigzag method. This is because although the zigzag method may be advantageous in expanding the contact area, the flow of water is not smooth and the load is concentrated locally, causing partial cracks or bursts to easily occur, resulting in a very high risk of water leakage.

Here, water is circulated in the first layer 110, and air is filled in the second layer 120, thereby separating the water film layer and the air layer to improve insulation.

Of course, it is natural that the first layer 110 may be filled with air and the second layer 120 may be filled with water.

In addition, a functional coating layer that facilitates the flow of water may be further formed on the inner wall of the channel through which water flows, for example, by increasing the dynamic contact angle of water to make the inner wall hydrophobic. By doing so, water can flow smoothly without experiencing much resistance from the inner wall.

The functional coating layer for this is 100 parts by weight of polycarbonate resin, 15 parts by weight of isopropyl ether, 10 parts by weight of nonylphenol ethoxylate, 15 parts by weight of octamethylcyclotetrasiloxane, 10 parts by weight of liquid melamine resin, and 20 parts by weight of pyrometic acid. It is formed by spray coating a mixture of parts by weight.

At this time, Iso-PropylEther forms a hardened film through its cross-linking function, thereby contributing to reducing resistance to water flow by preventing corrosion due to water circulation and contamination resistance such as sphagnum moss.

In addition, nonylphenol ethoxylate provides a surfactant function while increasing occlusion with the resin, and especially suppresses corrosion and cracking of the double-layer skin by preventing oxidation.

In addition, octamethylcyclotetrasiloxane is a waterproof organic substance that strengthens crack resistance, water repellency, and hydrophobization so as not to interfere with water circulation.

In addition, liquid melamine resin is added to maximize adhesion, strongly suppress surface peeling of the coating layer, and prevent cracks from occurring.

In addition, pyrometic acid is added to suppress heat shrinkage, enhance slip properties, strengthen the adhesion of the coating layer, and suppress thermal deformation.

Meanwhile, the second step is a step in which the water supply pipe 200 as shown in the example of FIG. 4 is assembled on the top of the multi-layer shell 100 processed through the first step.

At this time, the water supply pipe 200 includes a cylindrical main water intake pipe 210 and a plurality of branch pipes branched from the main water intake pipe 210 and connected to the water-filled layer of the multi-layer shell 100, that is, a waterway. It consists of (220).

Here, the water supply pipe 200 should not be cast, because if it is cast and integrated, it is difficult to solve the problem of damage to the connection part of the branch pipe 220 due to water pressure fluctuations, so a known pipe connection structure (including sealing) must be used. It is desirable to configure it so that immediate maintenance is possible when necessary.

In addition, the water supply pipe 200 is preferably made of stainless steel or PVC to increase corrosion resistance.

In particular, when manufacturing with PVC, it can be molded by mixing 20 parts by weight of terpenoid, 5 parts by weight of metal carbamic acid salt, and 15 parts by weight of polyvinyl butyral with respect to 100 parts by weight of PVC.

At this time, terpenoids are used to suppress the production of microorganisms in water to prevent flowability when supplying water and to increase the insulation effect.

In addition, the metal carbamic acid salt is used to increase durability by suppressing oxidation by oxygen.

In addition, polyvinyl butyral is used to increase chemical resistance and corrosion resistance, secure flexibility, and improve moldability.

On the other hand, the third step is a step in which the water distribution pipe 300, as illustrated in (a) of FIG. 5, is cast at the bottom of the multi-layer shell 100.

At this time, the water distribution pipe 300 includes a cylindrical chamber 310 with an empty interior, a plurality of connection pipes 320 that protrude in communication with the chamber 310 and are connected to the lower end of the multi-layer shell 100. and at least one discharge pipe 330 connected to the chamber 310 to discharge the water contained therein to the outside.

In particular, the water distribution pipe 300 is integrated with the multi-layer shell 100 by casting. As shown in (b) of FIG. 5, each connection pipe 320 is connected and fixed to the bottom of the multi-layer shell 100. Course 1; A second process of preparing a casting mold (M); A third process of charging and placing the double-layer shell (100)-water supply pipe (200) assembly into the prepared casting mold (M); A fourth process of pouring the casting so that the casting, the double-layer shell, and the water supply pipe are cast as one piece; It includes a fifth process of demolding when curing is completed after the fourth process.

Here, the casting can use epoxy resin or PVC. When using epoxy resin, 15 parts by weight of diazonium salt, 10 parts by weight of calcium methyl silane trioleate, and 10 parts by weight of parinaric acid are used for 100 parts by weight of epoxy resin. , can be used by adding an additional 15 parts by weight of lithium silicate.

In this case, diazonium salt promotes curing, calcium methylsilanetrioleate is added to strengthen waterproofing properties, parinaric acid is added to promote softening of the resin and increase bonding, and lithium silicate. Contributes to the formation of a waterproof coating film and strengthens contamination resistance.

On the other hand, in the fourth step, as shown in the example of FIG. 6, a water level sensor 400 is further installed at the upper part of the water channel of the multi-layer shell 100, and on the discharge pipe 330 constituting the water distribution pipe 300. By assembling the solenoid valve 500, a pump (not shown) and a controller (not shown) are installed on the circulation path to maintain the water level constant by adjusting the opening degree of the solenoid valve 500 according to the detection signal from the water level detection sensor 400. This is the step of installing more (not shown).

A sample photo of a greenhouse sample made using a double-layer water film circulation envelope manufactured according to this manufacturing method is shown in Figure 7.

In addition, as a result of testing with a thermal imaging camera to confirm the characteristics, it was confirmed that the heat blocking effect and insulation performance were excellent.

Additionally, no water leakage or bursting occurred at the casting site.

100: Double-layer shell
200: Water supply pipe
300: Water distribution pipe

Claims (2)

delete A first step of processing the multi-layer shell 100; A second step of assembling a water supply pipe 200 on the top of the multi-layer shell 100 processed in the first step; A third step of casting the water distribution pipe 300 at the bottom of the multi-layer shell 100 after the second step; In the method of manufacturing a double-layer water film circulation envelope including a fourth step of completing the double-layer water film circulation envelope by constructing a water circulation flow path after the third step;
The multi-layer shell 100 is processed from polycarbonate resin, and is provided with a plurality of in-line flow paths consisting of a first layer 110 and a second layer 120 filled with air or water;
The water supply pipe 200 includes a cylindrical main water intake pipe 210 and a plurality of branch pipes 220 branched from the main water intake pipe 210 and connected to the upper end of the water filled water channel of the multi-layer shell 100. It is formed of a PVC molding composition in which 20 parts by weight of terpenoid, 5 parts by weight of metal carbamic acid salt, and 15 parts by weight of polyvinyl butyral are mixed with 100 parts by weight of PVC;
The water distribution pipe 300 includes a cylindrical chamber 310 with an empty interior, a plurality of connection pipes 320 that protrude in communication with the chamber 310 and are connected to the bottom of the water channel of the multi-layer shell 100, and It includes at least one discharge pipe 330 connected to the chamber 310 to discharge the water contained therein to the outside, and the casting method connects and fixes each connection pipe 320 to the bottom of the water channel of the multi-layer shell 100. Process 1, the second process of preparing the casting mold (M), the third process of charging and placing the multi-layer shell (100)-water supply pipe (200) assembly into the prepared casting mold (M), and pouring the casting and A method for manufacturing a double-layer water film circulation shell, characterized in that it consists of a fourth process in which the double-layer shell and the water supply pipe are cast as one piece, and a fifth process in which the mold is demolded when curing is completed after the fourth process.