KR20210037122A - Slit for louver and louver comprising the same - Google Patents

Abstract

The present invention relates to a slit for a louver with excellent durability, heat resistance, and an excellent insulation property, and a louver having the same. The present invention comprises a first connection unit, a second connection unit, and a main body.

Description

Slit for louver and louver comprising the same {Slit for louver and louver comprising the same}

The present invention relates to a slit for a louver and a louver comprising the same.

Recently, the outdoor unit room in which the outdoor unit is installed is provided with a louver on one wall. Applied, the louver should be excellent in durability, heat resistance and heat insulation.

A louver has been developed based on a conventional PVC (polyvinyl chloride) material, but there is a disadvantage in that it is easily deformed due to poor heat resistance. In order to compensate for this, it was replaced with aluminum material with high structural rigidity, but aluminum has a problem with high frequency of condensation due to its low insulation. Should be.

Therefore, it is necessary to develop a louver using a material having structural stiffness (bending stiffness) similar to aluminum and excellent thermal insulation properties.

An object of the present invention is to provide a slit for a louver having excellent durability, heat resistance, and heat insulation, and a louver including the same.

In addition, it is an object of the present invention to improve process cost and to provide a louver slit capable of integrally forming a composite material and a louver including the same.

In order to solve the above problem, according to an aspect of the present invention, in the slit for a louver rotatably mounted on a guide rail, a first connection part provided at a first end, a second end opposite to the first end It includes a body having a second connection portion and a hollow portion therein, wherein the body includes 60 to 80% by weight of continuous fibers and 20 to 40% by weight of resin, and the first connection portion is at least one protruding in the first direction. It has 1 protrusion, and the second connection part has at least one second protrusion protruding in a second direction different from the first direction, and the continuous fiber includes at least one selected from the group consisting of glass fibers, carbon fibers and aramid fibers, , The resin is provided with a slit for a louver containing at least one selected from the group consisting of a polyurethane-based resin, an unsaturated ester-based resin, a vinyl ester-based resin, an epoxy-based resin, and a phenol-based resin.

In addition, according to another aspect of the present invention, a housing, a guide rail disposed in the housing, and a plurality of slits rotatably mounted on the guide rail, each slit, a first connection portion provided at the first end, A body having a second connection portion provided at a second end portion opposite to the first end portion and a hollow portion therein, wherein the body includes 60 to 80% by weight of continuous fibers and 20 to 40% by weight of resin, and the first The connecting portion has at least one first protrusion protruding in a first direction, the second connecting unit has at least one second protrusion protruding in a second direction different from the first direction, and the continuous fiber is glass fiber, carbon fiber, and aramid. Including at least one selected from the group consisting of fibers, wherein the resin includes at least one selected from the group consisting of polyurethane-based resins, unsaturated ester-based resins, vinyl ester-based resins, epoxy-based resins, and phenolic resins, provided by a louver. do.

As described above, according to the slit for a louver and a louver including the same according to at least one embodiment of the present invention, durability, heat resistance, and heat insulation are excellent.

1 is a schematic diagram showing a louver according to an embodiment of the present invention.
2 is a cross-sectional view of the louver shown in FIG. 1.
3 is a cross-sectional view of a slit.
4 is a schematic diagram illustrating a method of manufacturing a slit.

Hereinafter, a slit for a louver and a louver including the same according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In addition, regardless of the reference numerals, the same or corresponding components are given the same or similar reference numbers, and redundant descriptions thereof will be omitted, and the size and shape of each component member shown for convenience of explanation are exaggerated or reduced. Can be.

FIG. 1 is a schematic diagram showing a louver 100 related to an embodiment of the present invention, FIG. 2 is a cross-sectional view of the louver shown in FIG. 1, and FIG. 3 is a cross-sectional view of the slit 200.

Referring to FIG. 1, a louver 100 according to an embodiment of the present invention includes a housing 110, a guide rail 120, and a plurality of slits 200.

The louver 100 may be in an open state or a closed state according to the rotation of the plurality of slits 200. That is, referring to FIG. 1, when each slit 200 is in an upright state, it is in a closed state, and as shown in FIG. 2, when each slit 200 is rotated along a predetermined direction (open direction) in an upright state, It is in an open state.

The louver 100 is installed on one wall of an outdoor unit room in which an outdoor unit of an air conditioner is installed. That is, the housing 110 is mounted on an opening formed in the wall surface. At this time, when the louver 100 is in an open state, the outdoor air chamber and the outside air are fluidly connected to each other through the louver, and when the louver 100 is closed, the outdoor air chamber may be sealed from the outside air.

The louver 100 includes a housing 110, a guide rail 120 disposed in the housing 110, and a plurality of slits 200 rotatably mounted on the guide rail 120. The louver 100 may include a manipulation unit 130 having a handle 131 for manipulation by a user. In this case, the user may rotate the plurality of slits 200 rotatably mounted on the guide rail 110 by rotating the handle 131 in a predetermined direction.

For example, the rotation shaft of the slit 200 is mounted on the guide rail 120, and by operating (rotating) a handle connected to the guide rail 120, the guide rail is moved in the up/down direction, so that the slit 200 ) May induce rotation, and as shown in FIG. 2, an operation unit connecting the guide rail 120 and the slit 200 is provided, and by operating (rotating) the handle connected to the operation unit, the operation unit is rotated. , It is also possible to implement the slit 200 rotation.

Also, by rotating one handle 131, the entire slit 200 may be integrally rotated.

Meanwhile, referring to FIG. 3, each slit 200 (also referred to as a'louver slit') includes a first connection part 210 provided at a first end and a second end provided at a second end opposite to the first end. It includes a main body having 2 connection parts 220 and hollow parts 201, 202, and 203 therein.

The body contains 60 to 80% by weight of continuous fibers and 20 to 40% by weight of resin.

In addition, the first connection part 210 has one or more first protrusions 211 and 212 protruding in a first direction, and the second connection part 220 is at least one second protrusion protruding in a second direction different from the first direction. It has protrusions 221 and 222.

In this case, the second direction may be a direction opposite to the first direction.

In addition, the continuous fibers include at least one selected from the group consisting of glass fibers, carbon fibers, and aramid fibers.

In addition, the resin includes at least one selected from the group consisting of a polyurethane-based resin, an unsaturated ester-based resin, a vinyl ester-based resin, an epoxy-based resin, and a phenol-based resin.

In addition, the two adjacent slits may be disposed so that, in a closed state, the first connecting portion of one slit overlaps the second connecting portion of the other slit.

In addition, the two adjacent slits may be disposed so as to contact the first protrusion of the first connecting portion of one slit and the second protrusion of the second connecting portion of the other slit in the closed state.

In addition, the body may have a heat transfer coefficient of 0.25 to 0.3 W/mK.

In addition, the body may have a 0 degree flexural stiffness of 30 to 50 GPa, and the body may have a 90 degree flexural stiffness of 10 to 15 GPa.

In addition, although a main body having three hollow parts is shown in FIG. 3, the present invention is not limited thereto, and the main body may have a hollow part formed as a single space. That is, the main body may not include a reinforcing rib for partitioning the hollow portion into a plurality of spaces across the hollow portion.

In addition, the main body may further include 0.1 to 2 parts by weight of an additive based on 100 parts by weight of the sum of the continuous fibers and the resin.

Until now, the case where the louver slit is formed of a continuous fiber-reinforced plastic material has been described, but the present invention is not limited thereto, and various products constituting the louver 100, for example, the slit 200, the housing 110 , And the guide rail 120 may be formed of a continuous fiber-reinforced plastic material, respectively.

In addition, the guide rail includes 60 to 80% by weight of continuous fiber and 20 to 40% by weight of resin, the continuous fiber includes at least one selected from the group consisting of glass fiber, carbon fiber, and aramid fiber, and the resin is It may include at least one selected from the group consisting of polyurethane-based resins, unsaturated ester-based resins, vinyl ester-based resins, epoxy-based resins, and phenol-based resins.

In addition, the housing includes 60 to 80% by weight of continuous fiber and 20 to 40% by weight of resin, the continuous fiber includes at least one selected from the group consisting of glass fiber, carbon fiber, and aramid fiber, and the resin is polyurethane-based It may include at least one selected from the group consisting of resins, unsaturated ester resins, vinyl ester resins, epoxy resins, and phenol resins.

In this document, the slit 200, the housing 110, and the guide rail 120 constituting the louver 100 may be referred to as a'continuous fiber reinforced plastic louver product'.

4 is a schematic diagram illustrating a method of manufacturing a slit (continuous fiber reinforced plastic louver product).

First, a continuous fiber placed on one or more creels is prepared.

Krill refers to a frame in which a fiber-wound cone or bobbin is inserted, and in this document, the shape and size of the krill are not particularly limited, and any device that can be used in the drawing process of fiber-resin composites is applied. can do.

Here, it is preferable to use continuous fibers as the fibers. Compared with a conventional composite material using short fibers or long fibers, in the case of a composite material using continuous fibers, the fibers act as a filler or reinforcing material having orientation in one direction, thereby providing more excellent mechanical properties.

The continuous fiber may include at least one selected from the group consisting of glass fiber, carbon fiber, and aramid fiber.

For example, in the case of a glass fiber, a fiber consisting of 2400 to 4400 tex is generally used, and the diameter of the fiber is in the range of 15 to 20 μm, and a silane-based sizing treatment may be used. In the case of conventional fiber-reinforced plastics applied to windows, the included fibers are in the form of short fibers, whereas in the case of the present application, the included fibers are continuous fibers in a form that does not break long in the longitudinal direction.

Then, the continuous fibers provided from krill are preheated to a predetermined preheating temperature range.

Through preheating, moisture present on the fiber surface is removed, and the fiber can be spread out better than when guiding, which is a post process, and it is a process of preheating in advance for easy molding in a mold.

It is preferable that the preheating temperature is 40 degrees to 60 degrees. If the temperature is lower than 40°C, it is not recommended because it takes a long time to dry the moisture in the fiber.If the fiber is heated/dried if it exceeds 60°C, there is difficulty in guiding due to the swelling of the fiber. By increasing the temperature of the fiber entering, it can negatively affect the curing behavior.

Here, the humidity is preferably 60% or less. If it exceeds 60%, since the fibers meet with the resin in a form in which moisture is present on its surface, when the resin is cured, air bubbles may be generated or wettability may be deteriorated.

The device for preheating is not particularly limited, and any device may be applied as long as it is a device capable of exhibiting the above-described effects.

Then, the preheated continuous fiber is passed through a guiding device for moving it to a preset position.

The guiding device generally serves to spread the fibers flat. However, in the present application, the guiding device is a device that not only plays this role, but also helps the fiber to be positioned at a proper position in the product. In other words, in the case of a product with a complex shape, the molding mold is also complex. In this case, as well as simply unfolding the fibers, it is possible to help the fibers to be positioned in the correct position by preselecting a portion where the fibers are to be positioned.

The method of preselecting the position in which the above-described fiber should be positioned may be performed by a method previously designed according to a designed mold, and the specific method may be any method belonging to the present technical field.

Then, the continuous fiber that has passed through the guiding device is guided into a resin injection mold, and a resin is injected to form a fiber-resin composite.

After passing through the guiding device, the fiber moved to the pre-designed position is guided to the resin injection mold, and the resin is injected.

The resin is preferably a thermosetting resin. In addition, it is more preferable that the resin includes at least one resin selected from the group consisting of a polyurethane-based resin, an unsaturated ester-based resin, a vinyl ester-based resin, an epoxy-based resin, and a phenol-based resin.

It is preferable that the temperature of the resin injection mold is 40 degrees or less. Since the curing behavior of the resin does not occur and the resin must be passed to the molding mold, which is a later step, it is preferable to keep the temperature at 40 degrees or less. A medium that blocks heat conduction, such as an insulation pad, can be applied at the part connected to the molding mold.

Here, when the resin is injected into the fiber, it may be injected using one or more lines. When there are a plurality of lines, there may also be a plurality of injection material storage locations communicated with the lines.

The resin can be injected by one or more lines. In this case, the resin can be injected at a high speed, and the overall process speed can be improved. In addition, it can be injected in a two-pack type. Therefore, in the case of a plurality of substances to be injected, since each can be stored, the storage period can be drastically increased.

In addition, as an additive, it is easy to add a catalyst or a reinforcing material.

Here, it is possible to remove residual moisture/bubbles in the resin entering through the mixing/injecting process. Such a device may be added, and the device may be a device for physically removing residual moisture or air bubbles, and may be a defoaming device or a vacuum pressure device.

Thereafter, the fiber-resin composite can be molded using a plurality of molds having a temperature gradient.

The fiber-resin composite is introduced into a first molding mold having a first predetermined temperature range, and the fiber-resin composite is first heated. It is preferable that the first temperature range is 50 degrees or less.

The fiber-resin composite is directed to a second molding mold having a second temperature range above the first temperature range, whereby the fiber-resin composite is second heated. It is preferable that the second temperature range is 140 degrees to 160 degrees.

The fiber-resin composite is guided into a third molding mold having a third temperature range above the second temperature range, thereby forming a molding material. It is preferable that the third temperature range is 160 to 200 degrees.

As described above, in the case of a molding mold, a temperature gradient can be applied by dividing into three sections. Since the first section is a first heating step, it is relatively short, and the curing behavior should not occur, it is preferable to control it to 50 degrees or less. The second section is a second heating step, and is preferably controlled to 140 to 160 degrees for initial induction of the curing behavior. The third section is a section for forming a molding material and is preferably controlled to 160 to 200 degrees in order to induce the maximum curing speed.

Then, the molding material is guided to a cooling mold having a predetermined cooling temperature range less than the third temperature range, thereby cooling the molding material. The cooling step may be an optional step. It is preferable that the predetermined cooling temperature range is 60 degrees to 120 degrees.

The cooling mold is located after the 3rd section of the above-described molding mold, and is a section in which hardening of the part where hardening has not been performed is completely hardened, and the temperature is preferably maintained at 60°C to 120°C. Particularly, if it is less than 60 degrees, it is impossible to induce hardening of the non-progress hardened part within a short time, and if it exceeds 120 degrees, rapid hardening occurs, which induces a load in the mold.

Then, the molding material is taken out of the mold. The formed molding material may be directly taken out of the molding mold, or may be taken out from the cooling mold after cooling the molded material formed as described above.

Through the drawing process, the molding material can be pulled and taken out of the mold. Then, the taken-up molding material is cut into a predetermined size to form a window product.

Here, the formed molding material may include 60 to 80% by weight of continuous fibers and 40 to 20% by weight of the resin. Through such an appropriate component system, it is possible to provide a louver product with excellent physical properties.

Additionally, 0.1 to 3 parts by weight of an additive may be included based on the total weight of the continuous fiber and the resin based on 100. Here, the additive typically includes a catalyst, an internal release agent, and a filler (reinforcing material). In the case of additives, it can be applied to the process in the state of being premixed with polyol in the resin (divided into polyol-based and isocyanate-based).

In addition, FIG. 4 shows an apparatus for producing a continuous fiber-reinforced plastic louver product, and in the injection-type pultrusion molding device 1, the continuous fiber 11 wound around the creel 12 is heated through the preheating device 13 Then, after passing through the guiding device 14, it is introduced into the resin injection mold 15. In this case, there may be a plurality of lines into which the resin is injected, and each may include a resin storage unit 16. Then, it is cooled in the cooling mold 20 after passing through the three molding molds 17, 18, 19. The molded material thus formed may be taken out of the mold by the drawing device 21 and then cut into a single louver product (housing, guide rail, slit, etc.) by the cutting device 22.

In addition, as a continuous fiber reinforced plastic louver product, the component content is 60 to 80% by weight of continuous fiber and 20 to 40% by weight of resin, and the continuous fiber is at least one selected from the group consisting of glass fiber, carbon fiber, and aramid fiber. And the resin includes at least one resin selected from the group consisting of a polyurethane-based resin, an unsaturated ester-based resin, a vinyl ester-based resin, a phenolic resin, and an epoxy-based resin.

Such louver products (slit, housing, guide rail) may have a heat transfer coefficient of 0.25 to 0.3 W/mK. In addition, these louver products may have a 0 degree flexural stiffness of 30 to 50 GPa.

Example

The fiber used in this example is glass fiber, Owenscorning PULSTRAND 4100 grade, the resin is polyurethane, Huntsman RIMLINE SK14007 (Polyol), SUPRASEC9706 (Isocyanate) grade, and the resin is Polyol and Isocyanate in a weight ratio of 1:1.4. Was manufactured.

division Glass fiber (wt%) Resin (wt%) Thermal conductivity (W/mK) Comparative Example 1 (Conventional) Aluminum material 160 Comparative Example 2 (Existing) PVC material 0.2 Comparative Example 3 85 15 0.31 Comparative Example 4 35 65 0.25 Example 1 40 60 0.27 Example 2 60 40 0.28 Example 3 80 20 0.3

Preferred embodiments of the present invention described above are disclosed for the purpose of illustration, and those skilled in the art having ordinary knowledge of the present invention will be able to make various modifications, changes, and additions within the spirit and scope of the present invention. And additions will be seen as falling within the scope of the following claims.

100: louver
200: slit

Claims (13)

In the louver slit rotatably mounted on the guide rail,
A body having a first connection part provided at the first end, a second connection part provided at a second end opposite to the first end, and a hollow part therein,
The body contains 60 to 80% by weight of continuous fibers and 20 to 40% by weight of resin,
The first connecting portion has one or more first protrusions protruding in a first direction, the second connecting portion has one or more second protrusions protruding in a second direction different from the first direction,
The continuous fiber includes at least one selected from the group consisting of glass fibers, carbon fibers and aramid fibers,
The resin is a slit for a louver containing at least one selected from the group consisting of a polyurethane-based resin, an unsaturated ester-based resin, a vinyl ester-based resin, an epoxy-based resin, and a phenol-based resin. The method of claim 1,
The body is a slit for louvers with a heat transfer coefficient of 0.25 to 0.3 W/mK. The method of claim 1,
The body is a slit for louvers with a 0 degree bending stiffness of 30 to 50 GPa. The method of claim 3,
The body is a slit for louvers with a 90 degree bending stiffness of 10 to 15 GPa. The method of claim 1,
The main body is a slit for a louver in which a hollow part is formed into a single space. The method of claim 5,
The main body is a slit for a louver that does not include a reinforcing rib for partitioning the hollow portion into a plurality of spaces across the hollow portion. The method of claim 1,
The body is based on the sum of the continuous fiber and the resin, based on 100 parts by weight, the slit for a louver further comprising 0.1 to 2 parts by weight of additive. The method of claim 1,
The second direction is the opposite direction to the first direction, the slit for the louver. housing;
A guide rail disposed in the housing; And
Including a plurality of slits rotatably mounted on the guide rail,
Each slit includes a body having a first connection portion provided at a first end, a second connection portion provided at a second end opposite to the first end, and a hollow portion therein,
The body contains 60 to 80% by weight of continuous fibers and 20 to 40% by weight of resin,
The first connecting portion has one or more first protrusions protruding in a first direction, the second connecting portion has one or more second protrusions protruding in a second direction different from the first direction,
The continuous fiber includes at least one selected from the group consisting of glass fibers, carbon fibers and aramid fibers,
The resin includes at least one selected from the group consisting of a polyurethane-based resin, an unsaturated ester-based resin, a vinyl ester-based resin, an epoxy-based resin, and a phenolic resin. The method of claim 6,
The two adjacent slits are arranged such that, in a closed state, a first connection portion of one slit overlaps a second connection portion of the other slit. The method of claim 6,
The louver, wherein the two adjacent slits are arranged such that, in a closed state, a first protrusion of a first connecting portion of one slit and a second protrusion of a second connecting portion of the other slit are in contact. The method of claim 9,
The guide rail contains 60 to 80% by weight of continuous fibers and 20 to 40% by weight of resin,
The continuous fiber includes at least one selected from the group consisting of glass fibers, carbon fibers and aramid fibers,
The resin is a louver containing at least one selected from the group consisting of a polyurethane-based resin, an unsaturated ester-based resin, a vinyl ester-based resin, an epoxy-based resin, and a phenol-based resin. The method of claim 9,
The housing includes 60 to 80% by weight of continuous fibers and 20 to 40% by weight of resin,
The continuous fiber includes at least one selected from the group consisting of glass fibers, carbon fibers and aramid fibers,
The resin is a louver containing at least one selected from the group consisting of a polyurethane-based resin, an unsaturated ester-based resin, a vinyl ester-based resin, an epoxy-based resin, and a phenol-based resin.

Images