KR101545534B1 - a air conditioner piping constructed method - Google Patents

Abstract

The present invention relates to an air conditioner piping construction method and, more specifically, to an air conditioner piping construction method capable of improving workability and reducing production costs by quickly, smoothly, and firmly connecting an outdoor unit pipe and an indoor unit pipe formed of stainless steel through a flexible pipe connector while forming a pipeline in the construction of a building. The air conditioner piping construction method comprises: (a) a step of installing at least one or more guide pipes receiving an outdoor unit pipe to flow high-pressure and low-pressure fluids and surrounded by a wire and an insulation material for heat insulation and a buried box between a steel reinforcement for a floor and a steel reinforcement of a wall; (b) a step of placing and curing concrete in a form installed around the steel reinforcement of a floor and the steel reinforcement for a wall of a building where the guide pipes and the buried box are installed, demolishing the form, and then constructing a room interior including the insulation material; (c) a pipe connector installation step of connecting one end of the outdoor unit pipe installed in the buried box to flow the high-pressure and the low-pressure fluids to one end of a pipe connector; and (d) a step of connecting an indoor unit pipe to the other end of the pipe connector of which one end is connected to the outdoor unit pipe installed in the buried box to flow the high-pressure and low-pressure fluids.

Description

[0001] The present invention relates to an air conditioner piping constructed method,

The present invention relates to a method of constructing an air conditioner piping, and more particularly, to a method of constructing an air conditioner piping system by forming a pipeline at the time of construction of a building and simultaneously connecting an outdoor unit pipe formed of stainless steel through a flexible pipe connector to an indoor unit pipe quickly, And more particularly, to a method of constructing an air conditioner piping for enhancing the performance and reducing the cost.

Generally, a method of installing a pair of pipes in which a high-pressure and low-pressure refrigerant gas flows for heat exchange with an outdoor unit in which a condenser, a compressor and an expansion device are installed, and an indoor unit in which an evaporator is installed is used.

However, in the conventional air conditioner piping construction method, since a tube for circulating the electric wire and the refrigerant gas is exposed to the floor or the ceiling of the building, not only the aesthetic appearance is damaged but also damage is caused by an external impact, There is a problem that the building is damaged by perforating the wall.

In recent years, when the floor and the wall concrete of a building are poured, a pipe connecting the indoor unit and the outdoor unit and a landfill box are installed to connect the indoor unit and the outdoor unit, but they are connected to the pipe according to the length of the pipe protruding into the landfill There is a problem in that the indoor pipe can not be easily installed in the fixed landfill box.

In addition, the process of cutting the length of the outdoor unit pipe located in the embedding box is complicated, and when the pipe is cut more by carelessness of the operator, the pipe connector for connection with the indoor unit pipe can not be installed smoothly and firmly have.

Conventionally, when the outdoor unit pipe is formed of stainless steel or a stainless steel alloy, since the ductility is not better than that of the copper pipe, it is difficult to draw out or bend from the inside of the landfill which is deeply buried from the wall due to the heat- Therefore, there is a problem that the connection operation takes a long time.

Also, conventionally, it is difficult to fix the outdoor pipe firmly when the pipe connector is connected to the outdoor unit pipe made of stainless steel or stainless steel alloy and the pipe connector. Therefore, the high pressure pipe leaks refrigerant gas at the connection part due to high pressure, There is a problem in that it can not be operated.

In addition, when an outdoor unit pipe made of copper (Cu) is applied, it is difficult to smoothly work due to the collapse of the connection operation compared to an outdoor unit pipe made of stainless steel or stainless steel alloy, causing a rise in cost by more than 30% And the like.

In addition, since the tube connector connecting the indoor unit pipe and the outdoor unit pipe is not bendable and rotatable, it is very difficult to connect the indoor unit pipe and the outdoor unit pipe within the narrow space of the internal space, And the like.

Published Patent No. 10-2005-0044821

SUMMARY OF THE INVENTION The present invention has been conceived to solve the problems described above, and it is an object of the present invention to provide a flexible tube connector for quickly and securely connecting an outdoor unit pipe and a stainless steel indoor unit pipe, And it is an object of the present invention to provide a method of constructing an air conditioner piping for quickly and easily connecting an outdoor unit pipe and an indoor unit pipe even if the unit is located deep from a wall surface.

Another object of the present invention is to provide an air conditioner piping construction method which can quickly and easily install an air conditioner without drilling a hole for a pipe on a wall, a door, or a window by simultaneously forming an outdoor unit pipe and a guide pipe for receiving a wire .

According to another aspect of the present invention, there is provided a method of constructing an air conditioner piping, comprising the steps of: (a) placing an outdoor unit pipe between a bottom reinforcing bar and a wall reinforcing member to allow a high- A step of installing the guide tube and the embedding box; (b) an indoor interior construction step including placing concrete, curing, formwork disassembly, and thermal insulation material in a mold installed around a bottom reinforcing bar and a wall reinforcing bar of the building in which the guide pipe and the embedding box are installed; (c) a pipe connector installing step of connecting one end of the pipe connector to one end of an outdoor pipe for flowing high-pressure and low-pressure fluid installed in the embedding box; (d) connecting an indoor pipe to another end of a pipe connector connected at one end to an outdoor pipe for flowing high-pressure and low-pressure fluid installed in the landfill box; .

And the outdoor unit pipe is a tube made of stainless steel or a stainless steel alloy.

The tube connector is characterized by a flexible tube, a first fastening part 300a, and a second fastening part 300b.

In the step (d), the connection between the pipe connector and the indoor pipe is performed after the flexible pipe is drawn out of the wall of the room where the filling box is installed.

The first fastening part is composed of a female connector, a female connector and a tube supporting part, and the second fastening part is composed of male connector and female connector.

And the tube supporting means comprises a support ring, a tube holder, a binding member, and a sealing ring.

And a semi-solid grease for lubricating action and improving airtightness is injected into the sealing ring.

As described above, the present invention has the effect of improving workability by quickly and firmly connecting the outdoor unit pipe formed of stainless steel and the indoor unit pipe through the flexible pipe connector.

Further, according to the present invention, the outdoor unit pipe and the guide pipe for receiving the electric wire are formed at the same time as the construction of the building, so that the air conditioner installation work can be accomplished quickly and easily without drilling holes for pipes in walls, doors and windows.

In addition, the present invention improves the durability of the outdoor unit pipe by forming the outdoor unit pipe with stainless steel, and prevents the leakage of the refrigerant gas at the connection portion and facilitates the connection work of the indoor unit pipe and the outdoor unit pipe in the landfill box, And the cost can be remarkably reduced as compared with an outdoor air pipe formed of copper.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flowchart schematically showing a procedure of an air conditioner piping construction method according to the present invention; FIG.
FIG. 2 is a schematic view showing a state in which a guide pipe and a landfill box in which an outdoor unit pipe according to the present invention is formed are installed between a bottom reinforcing bar and a wall reinforcing bar.
3 is a view schematically showing a state in which the main portion of the tube connector according to the present invention is separated.
4 is a cross-sectional view of the first fastening part according to the present invention.
FIG. 5 is a view schematically showing a state before a male connector and a male connector of a first fastening part according to the present invention are lightly fastened and then an outdoor pipe is inserted.
6 is a view showing the assembled state of Fig.
FIG. 7 is a cross-sectional view of the main part schematically showing a state in which the outdoor unit pipe is firmly fixed by the first fastening part when the outdoor unit pipe is connected using the pipe connector according to the present invention.
8 is a view schematically showing a state in which the outdoor unit pipe installed in the landfill box is connected to the first fastening unit of the pipe connector according to the present invention.
Fig. 7 is a sectional view showing the main part of the outdoor unit pipe fixed by the first fastening part of the pipe connector of Fig. 6; Fig.
8 is a view schematically showing a state in which a tube connector having a leakage test member connected to one end thereof according to the present invention is installed in a filling box.
9 is a view schematically showing a state in which the tube connector according to the present invention is drawn out to the outside of the embedding box.
10 is a view schematically showing a state in which an outdoor unit pipe and an indoor unit pipe are connected using a pipe connector according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a method for constructing an air conditioner piping according to the present invention will be described in more detail with reference to the accompanying drawings.

Hereinafter, elements having the same function in all the following drawings will be denoted by the same reference numerals, and repetitive description will be omitted. Further, the following terms are defined in consideration of functions in the present invention, Should be interpreted as.

As shown in FIGS. 1 to 10, the method for constructing an air conditioner pipe according to the present invention comprises the steps of: (a) installing a guide pipe and a landfill box; and (b) (C) a pipe connector connecting step of connecting one end of the pipe connector to one end of the outdoor pipe; and (c) a step of connecting the pipe connector to one end of the pipe pipe S30), and (d) connecting the indoor pipe to another end of the pipe connector (S40).

(A) The installation of the guide pipe 100 and the landfill box 200 is performed by installing a power supply between a bottom reinforcing bar (not shown) and a wall reinforcing bar (not shown) Pressure pipe 410 and a low-pressure pipe 420 for flowing a high-pressure and low-pressure fluid surrounded by the electric wire W and the heat insulating material P, 100 and a landfill box 200 are installed. (S10)

Here, the outdoor unit pipe 400 according to the present invention may be made of stainless steel or stainless steel (for example, stainless steel or stainless steel) so as to achieve airtightness even at a low pressure and at a high pressure, Austenitic stainless steel such as SUS304, 304L, 316, and 316L).

For example, in the case of a stainless steel alloy, copper (Cu) in an amount of 2.9 to 3 wt%, chromium (Cr) in an amount of 17.0 to 19.0 wt%, manganese (Mn) in an amount of 11.0 to 21.0 wt% (Ni): 7 to 8 wt% or less, molybdenum (Mo): 2.5 to 3.5 wt%, nitrogen (N): 0.5 to 1.2 wt%, carbon (C) By weight or less, stainless steel and other unavoidable impurities:% by weight.

The amount of copper (Cu) contained in the stainless steel alloy is preferably 2.9 wt% to 3 wt%. That is, when copper (Cu) is contained in an amount of 2.9% by weight or less, ductility and processability are lowered, and when copper (Cu) is contained by 3% by weight or more, CuS inclusions are formed in the stainless steel alloy to lower the corrosion resistance of the stainless steel alloy . Therefore, the amount of copper is limited to the above-mentioned range.

The chromium (Cr) is an essential element that imparts corrosion resistance to stainless steel as a ferrite stabilizing element. In an austenitic stainless steel, chromium (Cr) is added to secure the corrosion resistance of the steel and increase the solubility of nitrogen 17.0% by weight or more.

However, when chromium (Cr) is added in excess, excess delta ferrite remains after solidification of the molten metal and promotes the formation of the second precipitate phase in the heat treatment process. This nonuniformity of the structure reduces the formal resistance of the steel, so the content of chromium (Cr) is limited to 17.0 ~ 19.0 wt%.

The manganese (Mn) is added for the purpose of replacing nickel (Ni) which is an economical austenite stabilizing element and an expensive austenite stabilizing element.

In addition, since the solubility of nitrogen (N) in the steel is increased,

.

Therefore, 11.0 wt% or more of manganese (Mn) is added to improve the economical efficiency of the material and the nitrogen (N) solubility.

However, when manganese (Mn) is added in excess, it forms a nonmetallic inclusion of manganese sulfide (MnS) or manganese oxide (MnO) by binding with impurity element sulfur (S) or oxygen (O) To reduce the formal resistance of the stainless steel so that the content thereof is limited to 11.0 to 21.0% by weight.

The nickel (Ni) improves the hot and cold workability of the manufacturing alloy, imparts high stress corrosion cracking (SCC) resistance and excellent corrosion resistance in an acidic solution, and inhibits delta ferrite formation during the solidification of the base metal The addition amount of nickel (Ni) is limited to 7 to 8 wt% or less.

The nitrogen (N) maintains the ductility at a high level while increasing the strength of the alloy and greatly improves the pitting resistance.

Therefore, in the austenitic stainless steel of the present invention, 0.5% by weight or more of nitrogen (N) is dissolved to give a steel with excellent strength-ductility combination and high level of pitting resistance. However, the content of nitrogen (N) was limited to 0.5 to 1.2 wt% in order to prevent excess nitrogen (N) from forming nitride and avoid embrittlement of the inventive material.

The molybdenum (Mo) stabilizes the ferrite phase and remarkably improves the local corrosion resistance of the base material in a chloride (Cl-) solution atmosphere. The molybdenum (Mo) , It is added by 2.5% by weight or more to improve the pitting resistance of the alloy.

However, if it is added in excess, the amount of residual delta ferrite after coagulation is increased, and a harmful second phase is formed as in the case of chromium (Cr), which may cause deterioration of physical properties.

Since molybdenum (Mo) is a very expensive alloy element, its content is limited to not more than 3.5 wt% for economical efficiency.

The carbon (C) improves the strength of the steel material and easily combines with chromium (Cr), which is a main alloy element of stainless steel, to form a stable chromium-carbide (Cr23C6 or the like). The chromium carbide mainly precipitates in the grain boundaries while consuming chromium (Cr) in the vicinity of the base, and the Cr-depletion zone around the formed carbide acts as a source of formal corrosion. Therefore, the content of carbon (C) was limited to not exceed 0.03% by weight.

On the other hand, the silicon (Si) is a ferrite forming element and has a property of easily bonding with oxygen (O) in the base material, and thus is mainly used as a deoxidizer. However, when added excessively, there is a risk of greatly reducing the mechanical properties associated with toughness and forming intermetallic compounds. Therefore, the content thereof was limited to 0.25 wt% or less.

As described above, the stainless steel alloy forming the outdoor unit pipe 400 according to the present invention has a combination of the above-described alloying elements in order to secure a stable austenitic single phase and impart excellent ductility.

In addition, since the outdoor unit pipe 400 according to the present invention is formed of a stainless steel alloy having ductility, it is formed to have a thickness of 0.2 to 1 mm so as to have sufficient strength as compared with copper or aluminum materials, reduce damage from external impacts, desirable.

For example, when the thickness is 0.2 mm or less, it is too thin to be easily processed, but it is vulnerable to damage from external impact. When the thickness is 1 mm or more, the thickness is too thick, .

The outdoor unit pipe 400 having such a structure is stronger than the conventional outdoor unit pipe made of copper (Cu) or aluminum, so that it is possible to prevent or significantly reduce damages such as crushing even with a thin thickness, It can prevent strong corrosion and at the same time achieve remarkable cost savings of over 30%.

However, apart from the above advantages, the outdoor unit pipe 400 made of stainless steel or stainless steel is used in a conventional outdoor unit pipe formed of copper (Cu) or aluminum or the like when the indoor unit pipe 500 is connected using a conventional pipe connector So that it is difficult to fix easily and firmly, so that the refrigerant gas is leaked from the connecting portion, so that the air conditioner can not be smoothly operated.

For this purpose, the outdoor pipe 400 made of stainless steel or a stainless steel alloy can be easily and firmly fixed using the pipe connector 300 to be described later.

The guide pipe 100 is made of synthetic resin so as to have a spiral or wrinkle shape so that it can be easily bent at the time of piping, and is arranged at various positions in consideration of the structure and shape of the building and the air conditioner installation position.

In addition, the embedding box 200 is installed with a wall near the air conditioner to receive one end of the guide pipe 100 using synthetic resin.

At this time, after one end portion of the guide pipe 100 and the outdoor air pipe 400 are positioned inside the embedding box 200, the lid (not shown) is closed to prevent foreign matter from being introduced.

The outdoor unit pipe 400 enclosed by the electric wire W and the heat insulating material P is integrally provided with the guide pipe 100 when the building is constructed so that the air conditioner piping process is remarkably shortened, So that the workability can be improved.

In addition, the guide tube 100 prevents external exposure of the electric wire W, the heat insulating material P, and the outdoor unit pipe 400, thereby improving aesthetic appearance and preventing damage.

The interior interior construction step including (b) concrete pouring, curing, form dismantling and heat insulating material may be carried out by installing the guide pipe 100 and the formwork installed around the bottom reinforcing bars of the building in which the embedding box 200 is installed, The concrete is laid, the curing and formwork are dismantled, and the interior including the insulation, the soundproofing material and the wallpaper is performed (S20))

At this time, the embedding box 200 is located deeply inwardly of about 15 cm to 30 cm from the inner wall surface of the wall-formed building due to the construction of the heat insulation and the soundproofing material such as foamed synthetic resin.

The installation of the pipe connector 300 in the step (c) includes the step of connecting the pipe connector 4000 with one end of the outdoor pipe 400, which is composed of the high-pressure pipe 410 and the low- And the first fastening part 300a is connected. (S30)

At this time, a leakage test member 600 for testing whether or not the refrigerant injected into the air conditioner evaporator is leaked is coupled to the second fastening part 300b located at the other end of the pipe connector 300.

Here, the leakage test member 600 is used for injecting a refrigerant gas into an air conditioner (not shown) and sealing it, and then checking whether there is leakage in the welded portion.

The tube connector 300 includes a flexible tube 300c having a flexible shape and a flexible tube 300c and a first coupling part 300a formed at one end of the flexible tube 300c, (300b).

The flexible tube 300c is preferably formed of copper (Cu) having a spiral-like corrugated structure so as to have a structure capable of repeated bending and left and right rotation.

Since the flexible tube 300c having such a configuration is flexible in bending and rotating operation, the flexible tube 300c having one end connected to the outdoor air pipe 400 formed in the landfill box 200, which is embedded in the depth of about 15 cm to 30 cm inward from the wall surface, The connector 300 can be quickly and easily pulled out of the wall surface.

The first fastening portion 300a includes a male connector 310, a female connector 320, and a tube supporting means 330.

The male connector 310 has a male screw 311 for fastening on both sides of the male connector 310 and a holding space 312 for accommodating the tube holder 330 is formed therein.

The female connector 320 is formed with a female screw 321 for fastening the female connector 320 to the male connector 310 of the male connector 310 in the longitudinal direction, And a support surface 322 for supporting and supporting the tube holder 322 are formed.

Accordingly, when fastening the male coupling 310 to the male connector 310, it is possible to provide a firmly fastening pressure forward while supporting the tube holder 330.

In addition, a tube insertion hole 323 for coupling the outdoor unit pipe 400 is formed on one side surface of the female connector 320.

The tube supporting means 330 comprises a support ring 331, a tube holder 332, a binding member 333 and a sealing ring 334.

The support ring 331 is made of Teflon and supports the tube holder 332 to support the male connector 310 and the female connector 320. When the male connector 310 and the female connector 320 are fastened together, Thereby preventing a gap caused by twisting or excessive friction.

The tube holder 332 of the tube supporting means 330 has a friction coefficient higher than that of the support ring 331 when the male coupling 310 and the female connector 320 are fastened together with the support ring 331, It is contacted with the support ring 331 without being directly in contact with the inner bottom surface of the high-grade female connector 320, so that a low friction coefficient is given.

Therefore, even when the female connector 320 is rotated clockwise or counterclockwise, the tube supporting means 330 is supported by the support ring 331, so that the bottom surface of the pipe arm connector 320 having a high frictional force It is hardly affected by the frictional force because it is not in direct contact with the center axis, so that alignment is prevented from being twisted with respect to the center axis or occurrence of a gap due to friction is prevented. Therefore, the assembling and sealing properties can be improved.

The tube holder 332 is coupled to the coupling member 333 and the outer surface thereof is formed with a tapered portion 332a and a ring-shaped spike 332b is formed at the tip thereof.

Here, the inclined portion 332a may be formed to have an inclination angle corresponding to the inclined engagement portion 333a of the binding member 333.

The tube holder 332 is deeply inserted into the tapered engaging portion 333a of the binding member 333 by the fastening force when the male connector 310 and the female connector 320 are fastened.

At this time, the spike 332b formed at the tip of the pipe holder 332 is compressed and deformed, and moves toward the center of the circle of the outdoor unit pipe 400 to be firmly supported by the outer surface of the outdoor unit pipe 400.

That is, when the tube holder 332 and the coupling member 333 are coupled, the tube holder 332 is moved forward into the inclined coupling portion 333a of the coupling member 333, The formed spike 332b is compressed and deformed through the inclined engagement portion 333a and is pinched toward the center of the circle so that the outer surface of the outdoor unit pipe 400 formed of the stainless steel alloy can be easily digged and firmly supported.

In addition, the spike 332b is preferably formed with an inclined blade (not shown) so that the outer surface of the outdoor unit pipe 400 made of stainless steel or a stainless steel alloy can be easily pierced and firmly fixed.

The coupling member 333 is formed at one side of the inner surface with an inclined engagement portion 333a for engagement with the inclined portion 332a of the tube holder 332. The inclined engagement portion 333a is provided at one side thereof with an exhaust pipe And a linear engaging portion 333b for engaging with the outer surface of the base plate 400 is formed.

Therefore, by tightly supporting the outdoor unit pipe 400 made of stainless steel or stainless steel having a stronger strength by making a more tight and firm connection, it is possible to prevent loosening or detachment.

The diameter of the linear coupling portion 333b may be the same as the outer diameter of the outdoor unit 400. [

As a result, the outdoor unit pipe 400 is smoothly and tightly coupled with the linear fitting unit 333b, so that the outdoor unit pipe 400 is not easily separated from the coupling unit 333, 320 can be performed more smoothly.

The sealing ring 334 does not change its characteristics even when it comes into contact with a fluid such as a cold refrigerant gas, and is excellent in chemical resistance and weatherability (weather resistance: the material is light, weather, humidity, A pair of first sealing rings 334a formed of a Teflon material which is one of the polyfluoroethylene synthetic fibers having a good coefficient of friction and a low coefficient of friction and a good sealing performance A second sealing ring 334b formed of a metal such as stainless steel and a third sealing ring 334c formed as one side of the first sealing ring 334a.

Here, the third sealing ring 334c is made of a fluorocarbon rubber which is a synthetic rubber of a polymer containing fluorine so that heat resistance is high and durability against oil, gas, and chemical resistance is maintained. .

The reason why the sealing ring 334 is formed of a plurality of rings is that partial deformation is prevented and airtightness is improved as compared with the case where the sealing ring 334 is formed only by one ring.

That is, when the sealing ring 334 is composed of only one sealing ring, the seal ring 334 may be excessively deformed by the pressure applied to the sealing ring 334, And the female connector 320 are repeatedly assembled at least two times, it is impossible to recover the shape of the mold and reuse becomes impossible.

The second sealing ring 334b is formed between the pair of first sealing rings 334a so that the first sealing ring 334a is pressed against the first sealing ring 334a when the male connecting hole 310 and the female connecting hole 30 are fastened The first sealing ring 334a is prevented from being excessively deformed due to excessive pressure generated by the first sealing ring 334a, thereby improving the airtightness of the first sealing ring 334a and restoring the shape of the sealing ring 334a.

The first sealing ring 334a and the second sealing ring 334b are preferably filled with semi-solid grease for lubricating action and improving airtightness.

Accordingly, the first sealing ring 334a and the second sealing ring 334b, which are formed so as to surround the outdoor unit pipe 400, are closely adhered to each other and at the same time form an oil film on the outer circumference of the outdoor unit pipe 400, The gas leakage (leakage) can be completely blocked.

The sealing ring 334 having such a structure is inserted into the male coupling hole 310 and the female coupling hole 320 in which the tube supporting means 330 is inserted, Is compressed in the longitudinal direction while being compressed by only about 0.5 mm to 3 mm by means (330), and is expanded (deformed) in the width direction to completely block the gaps and prevent excessive deformation. Thus, deformation such as circular restoration failure, It is possible to prevent defects as well as deterioration of airtightness caused by them.

That is, after the tube supporting means 330 is mounted inside the male connector 310 and the female connector 320 of the first fastening part 300a, the male screw 311 of the female connector 310 and the female connector The female screw 321 of the connector 320 is lightly tightened and the outdoor unit pipe 400 is inserted into the pipe insertion hole 323 of the female connector 320. [

The stainless steel outer pipe 400 can be quickly, easily, and firmly supported by simply tightening (tightening) the male connector 310 and the female connector 320. Thus, even when a high pressure is generated, 400 are prevented from being pushed or released.

The second fastening part 300b is formed with an inclined surface 342 at its tip end and a male coupling hole 340 having a male screw 341 for fastening is formed on one side of the inclined surface 342.

The inclined surface 342 is in contact with the expanded portions 511 and 521 formed at the tip of the indoor unit pipe 500 composed of the high pressure pipe 510 and the low pressure pipe 520 and the remaining portion except for the passage through which the refrigerant passes It plays a role of sealing. That is, since the inclined surfaces 342 are formed to correspond to the high-pressure pipe 510 of the indoor unit 500 and the expanded portions 511 and 521 of the low-pressure pipe 520, the second fastening units 300b (Not shown) at the time of tightening with the indoor unit 500 and the indoor unit 500. Therefore, the airtightness is improved and the refrigerant can be more effectively prevented from flowing out to the portion other than the flow path.

The male screw 341 formed on the male connector 340 is fastened to the female screw 351 formed on the inner surface of the female connector 350 installed in the indoor unit 500 to be firmly fixed.

The step (d) of connecting the pipe connector 400 to the indoor pipe 500 is performed by connecting the second coupling part 300b formed at the other end of the pipe connector 300 and the indoor pipe (not shown) 500 are connected. (S40)

That is, after the leak test member 600 coupled to the second fastening part 300b of the pipe connector 300 connected to one end of the outdoor unit pipe 400 is disengaged, the second fastening part 300b The female screw 351 of the female connector 350 formed of one end of the indoor pipe 500 composed of the male screw 341 of the male connector 340 and the high pressure pipe 510 and the low pressure pipe 520 connected to the air conditioner ).

At this time, the flexible tube 300c of the tube connector 300 is bent out of the inner wall surface of the landfill box 200 so that the male connector 340 of the second fastening part 300b of the tube connector 300 and the male connector 340 of the high- 510 and the low-pressure pipe 520, which are coupled to the indoor unit pipe 500, are quickly and easily fastened.

The flexible tube 300c of the tube connector 300 is bent so as to be drawn out to the outside of the embedding box 200 and then the second fastening part 300b of the tube connector 300 is formed in a wide space The embedding box 200 is positioned deeply from the inner wall surface of the building by fastening the female connector 350 formed at one end of the indoor pipe 500 comprising the male connector 340, the high pressure pipe 510 and the low pressure pipe 520, It is possible to quickly and easily establish connection with the outdoor unit pipe 400 located in the inside of the room.

A method of constructing the air conditioner piping according to the present invention will now be described.

(A) The step of installing the guide pipe 100 and the landfill box 200 may be performed by installing a power source (not shown) between a bottom reinforcing bar (not shown) and a wall reinforcing bar Pressure pipe 410 and a low-pressure pipe 420 for flowing a high-pressure and low-pressure fluid surrounded by the electric wire W for supply and the heat insulating material P, The pipe 100 and the landfill box 200 are fixedly installed according to a designed design of a suitable place for installing the air conditioner.

At this time, the flush box 200 is closed to prevent foreign matter from entering.

Since the outdoor unit pipe 400 enclosed by the electric wire W and the heat insulating material P is installed integrally with the guide pipe 100 during the construction of the building, the air conditioner piping process is shortened, Since the installation work is performed, workability can be improved.

In addition, the guide tube 100 prevents external exposure of the electric wire W, the heat insulating material P, and the outdoor unit pipe 400, thereby improving aesthetic appearance and preventing damage.

Next, the indoor interior construction step including (b) concrete pouring, curing, form dismantling and heat insulating material is installed around the bottom reinforcing bars of the building in which the guide pipe 100 and the landfill box 200 are installed, Concrete is laid in the formwork (not shown), the curing and formwork are dismantled, and the interior including the heat insulation, the soundproofing material and the wallpaper is performed. (S20)

Next, in the step (c) of installing the pipe connector 300, the pipe connector 300 is connected to one end of the outdoor pipe 400, which is composed of the high pressure pipe 410 and the low pressure pipe 420 installed in the landfill box 200, The first fastening portion 300a is connected to the first fastening portion 300a. (S30)

At this time, after inserting the outdoor unit pipe 400 into the female connection port 310 and the female connection port 320 in which the pipe supporting unit 330 constituting the pipe connector 300 is built, When the female connector 320 is fastened, the outdoor unit pipe 400 formed of the stainless steel alloy is fast and firmly fixed and supported by the tube supporting means 330 moving forward.

Accordingly, it is possible to prevent the outdoor unit pipe 400 of the stainless steel or stainless steel alloy from being pushed or released even when a high pressure is generated.

The step (d) of connecting the pipe connector 400 to the indoor pipe 500 is performed by connecting the second coupling part 300b formed at the other end of the pipe connector 300 to the indoor unit 300 connected to the air conditioner (not shown) The pipe 500 is connected (S40)

More specifically, after the leak test member 600 coupled to the second fastening portion 300b of the pipe connector 300 connected to one end of the outdoor unit pipe 400 is disengaged, The male coupling port 340 of the inner tube 300b and the female coupling port 350 formed of one end of the indoor tube 500 are fastened.

At this time, the flexible tube 300c of the tube connector 300 is bent out to be drawn out from the inner wall surface of the landfill box 200 so that the male connector 340 of the second coupling part 300b of the tube connector 300 and the indoor pipe 500 and the female connector 350, which is coupled with the female connector 350, quickly and easily.

The flexible tube 300c of the tube connector 300 is bent so as to be drawn out to the outside of the embedding box 200 and then the second fastening part 300b of the tube connector 300 is formed in a wide space The connection between the male connector 340 and the female connector 350 formed at one end of the indoor unit pipe 500 can be quickly achieved with the outdoor unit pipe 400 located in the landfill box 200 deeply positioned from the inner wall surface of the building And can be easily achieved.

Accordingly, the method for constructing the air conditioner piping according to the present invention can quickly and firmly connect the outdoor unit pipe and the indoor unit pipe formed of stainless steel or stainless steel alloy, and form the guide pipe at the same time as the construction of the building, It is possible to quickly and easily install the air conditioner without drilling a hole for the outdoor unit pipe. In addition, the outdoor unit pipe is formed of stainless steel to improve the durability and prevent leakage of the refrigerant gas at the connection portion. In the landfill box having a narrow inner space, And the outdoor unit pipe can be easily and quickly achieved.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. And will be apparent to those skilled in the art to which the invention pertains.

100: Guide tube 200: Filling box
300: pipe connector 300a: first fastening portion
310: Male connector 311: Male thread
312: support means accommodating space 320: female connector
321: Female thread 322:
323: tube insertion hole 330: tube support means
331: support ring 332: tube holder
332a: inclined surface 332b: spike
333: a binding member 333a:
333b: straight line connecting portion 334: sealing ring
334a: first sealing ring 334b: second sealing ring
334c: third sealing ring 300b: second fastening part
340: male connector 341: male thread
350: female connector 351: female thread
300c: Flexible pipe 400: Outdoor pipe
410: high pressure pipe 420: low pressure pipe
500: Indoor pipe 510: High pressure pipe
520: Low-pressure pipe 600: Leakage test member
W: Wire P: Insulation

Claims (7)

As an air conditioner piping construction method,

(a) installing at least one guide pipe and a landfill box between the bottom reinforcing bar and the wall reinforcing bar to accommodate the outdoor pipe so as to flow the high pressure and low pressure fluid surrounded by the electric wire and the heat insulating material;
(b) an indoor interior construction step of placing concrete in a formwork installed around the bottom reinforcing bars of the building and the reinforcing bars of the building in which the guide pipe and the embedding box are installed, and curing, mold disassembly and insulation;
(c) a pipe connector installing step of connecting one end of the pipe connector to one end of an outdoor pipe for flowing high-pressure and low-pressure fluid installed in the embedding box;

In the tube connector installation step, the outdoor unit pipe is a tube having a thickness of 0.2 to 1 mm of an austenitic stainless steel alloy. The pipe connector has a flexible (300c) pipe, a first fastening part 300a, (300b)
The second fastening portion 300b has a slant face at the front end and a male thread 341 at one side outer face of the slant face. The first fastening portion 310 includes a male connector 310, a female connector 320, The male connector 340 having the male connector 340 is formed,
The tube supporting means 330 includes a support ring 331 and a tube holder 332 having a tapered outer surface and a ring-shaped spike 332b formed at the tip of the tube support 333. The tube holder 332 has an inclined engagement portion 333a A sealing ring 334 composed of a first sealing ring 334a formed of a Teflon material, a second sealing ring 334b made of a metal, and a third sealing ring 334c formed of fluorine rubber, which is a polymer synthetic rubber containing fluorine, ),
Characterized in that a semi-solid grease is injected into the sealing ring for lubricating action and for enhancing airtightness,

(d) a second fastening part 300b formed at the other end of the pipe connector having one end connected to the outdoor pipe for flowing high-pressure and low-pressure fluid installed in the landfill box, and a female connector 350 formed at one end of the indoor pipe And connecting the air-conditioning pipe to the air-conditioning pipe.
delete delete The method according to claim 1,
Wherein the connection between the pipe connector and the indoor pipe is performed after the flexible pipe is drawn out from the inner wall surface of the room where the filling box is installed. delete delete delete

Images