KR101489153B1 - Urethane Pannel for freezing or refrigerating storage and method to construct using the same - Google Patents

Abstract

The present invention relates to a method to install a flame retardant sandwich urethane panel for refrigerating and freezing facilities. The purpose of the present invention is to provide a method to install a flame retardant sandwich urethane panel to have an excellent insulation effect due to stable foaming of urethane foam as urethane panels insulation-installed in refrigerating/freezing facilities are closely connection-installed not to generate a gap therebetween, and upper/lower steel plates and left/right plates are combined. According to the present invention, an upper steel plate having an upper end fitting bent part in both sides in a width direction; a lower steel plate installed to be in parallel with the upper steel plate at a distance away from the upper steel plate, and having a lower end fitting bent part in both sides in a width direction; a left plate installed to be located between the upper steel plate and the lower steel plate, and whose upper end and lower end are inserted and in contact with the upper fitting bent part located in the left side of the upper steel plate and the lower fitting bent part located in the left side of the lower steel plate; a right plate installed to be located between the upper steel plate and the lower steel plate, and whose upper end and lower end are inserted and in contact with the upper fitting bent part located in the right side of the upper steel plate and the lower fitting bent part located in the right side of the lower steel plate; and a urethane panel including urethane foam foamed inside a space surrounded by the upper steel plate, the lower steel plate, the left plate, and the right plate are continuously assembled and installed by a cylindrical binding material fitted and bound in the left plate and the right plate, and a connection fixing ring fitted and bound in the cylindrical binding material.

Description

TECHNICAL FIELD [0001] The present invention relates to a flame retardant sandwich urethane panel and a method of installing the flame retardant sandwich urethane panel for refrigeration and freezing facilities,

The present invention relates to a flame retardant sandwich urethane panel for refrigeration and freezing facilities and a method of installing the flame retardant sandwich urethane panel for refrigerating and freezing facilities, A flame retardant sandwich urethane panel for installation, and a method for installing the same.

Generally, refrigeration warehouses and refrigeration warehouses are widely known as refrigeration and refrigeration facilities for storing various goods and products at low temperatures. Such refrigeration / refrigeration facilities require excellent heat insulation effect for protecting the inside air have.

The refrigeration / freezing facilities require excellent heat insulation effect to protect the inside of the refrigerator, and thus the wall and the roof are formed by the urethane panel having good strength, excellent heat insulation, and easy assembling.

Wherein the urethane panel comprises an inner / outer steel plate which has an inner surface and an outer surface and is installed parallel to each other at a predetermined interval, and a plurality of urethane panels which are installed between the inner / outer steel plates and are integrally formed of urethane, As shown in FIG.

A conventional urethane panel has a concave portion on one side and a convex portion on the other side so that the convex portion of another urethane panel is fitted to the concave portion of one side urethane panel and then silicone injection is applied to the panel connecting portion exposed to the outside, Whereby a plurality of urethane panels are jointed to each other.

However, since the conventional urethane panel as described above is mostly manufactured for construction, only the appearance of the urethane panel is pursued. Therefore, when the urethane panel is assembled and installed, the connection portion exposed to the outside is in close contact with the gap without any clearance, A gap is formed between the two urethane panels assembled and installed inside the connection part, so that the heat insulating property to the connection part is lowered.

When the conventional urethane panel is attached and installed to insulate the outer wall of a building structure, there is no significant problem in the overall heat insulation. However, when the temperature difference between the inside and the outside is 10 ° C or more, When installed, there is a problem that condensation occurs on the inside / outside of the connection part due to deterioration of the heat insulation at the connection part, and water drops are formed along the inside gap, so that the urethane panel is corroded by moisture, .

Further, in order to solve such a problem, there is a structure in which a structure of a connected portion is formed in a multi-stage so that two adjacent urethane panels are assembled by multi-step concave-convex coupling. However, such a multi- Resulting in not only an increase in the production cost but also a remarkable decrease in assembling and installation performance.

Patent Registration No. 10-0922117 (2009.10.09) Patent Registration No. 10-0870553 (2008.11.19) Patent Registration No. 10-1125829 (2012.03.06) Registration Utility Model Registration No. 20-0238480 (July 3, 2001)

An object of the present invention is to provide an urethane foam panel which is installed in close contact with a urethane panel installed in a freezing / refrigeration facility so as not to generate a gap therebetween, And to provide a flame retardant sandwich urethane panel.

An object of the present invention is to provide a flame retardant sandwich urethane panel for a refrigeration and freezing facility which can easily and firmly install a urethane panel on a refrigeration /

The present invention relates to an upper steel plate having upper fitting bends at both sides in the width direction, a lower steel plate spaced apart from the upper steel plate by a predetermined distance and having lower fitting bends at both sides in the width direction, A left side plate provided so as to be in contact with the upper end and the lower end of the upper plate and located on the left side of the upper plate and the lower plate of the lower plate, A right side plate in which an upper end and a lower end are in contact with each other at an upper fitting bend located on the right side of the upper steel plate and a lower fitting bend located on the right side of the lower steel plate; A urethane panel comprising a foamed urethane foam foamed in an enclosed space is provided between a cylindrical member and a cylindrical member, And is continuously installed and assembled by a coupling fixing ring fitted to the cylindrical coupling member.

In the present invention, the left and right sides of the urethane panel integrally provided on the left and right sides of the urethane panel are respectively provided with recesses and convex portions. When the one-side urethane panel and another urethane panel are assembled and connected to each other by a concave- The contact is brought into surface contact with the right side plate of the right plate and the caulking material is sandwiched between the right swash plate and the right vertical plate of the left side swash plate and the right side plate and between the horizontal bending portions of the upper / Since the connection part of the urethane panel is filled by injection, it is completely sealed without any gap by the surface contact and the coating material, so that it has an excellent heat insulation effect when the insulation is installed in the refrigeration / freezing storage facility.

In the urethane panel of the present invention, the adjacent urethane panels are connected to each other by the cylindrical binder and the connection fixing ring, so that the urethane panel can be easily assembled and installed. In addition, The surface contact force of the right side plate formed on the right side plate of the panel is increased, and the neighboring urethane panel is firmly connected.

In the present invention, since a plurality of vane plates are further provided in the left and right cylindrical pipes, a plurality of vane plates are embedded in the urethane foam during the foaming molding of the urethane foam, so that the urethane foam and the left and right side plates are more firmly connected.

The present invention is characterized in that both sides of the upper steel plate and the lower steel plate are closed by the left and right plates so that when the urethane foam is molded in the inner space to foam the urethane foam, And the foaming gas is prevented from leaking, whereby the thickness reduction phenomenon of the foamed urethane foam and the occurrence of the defective rate are reduced.

In the present invention, a coating film is further formed on the upper steel plate and the lower steel plate of the urethane panel by the anti-salt agent, thereby preventing damage to the urethane panel due to salt.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an illustration showing a configuration of a urethane panel according to the present invention
FIG. 2 is a view showing an example of a structure of an upper / lower steel sheet according to the present invention. FIG.
FIG. 3 is an exemplary view showing a configuration of a left side plate according to the present invention
FIG. 4 is a view showing an example of a structure of a right side plate according to the present invention
5 is an exemplary view showing a process of assembling the urethane panel of the present invention
6 is an exemplary view showing a connection state of a urethane panel according to the present invention
7 is a plan view showing a connection state of a urethane panel according to the present invention.

FIG. 1 is an exemplary view showing the construction of a urethane panel according to the present invention, FIG. 2 is an exemplary view showing a structure of an upper / lower steel sheet according to the present invention, FIG. 3 is an illustration showing a structure of a left side plate according to the present invention 5 is a view illustrating a process of assembling a urethane panel according to the present invention, and FIG. 6 is a view showing a connection state of a urethane panel according to the present invention. FIG. 7 is a plan view showing a connection state of a urethane panel according to the present invention,

The present invention is characterized by an upper steel plate 10 having upper fitting bends 12 on both sides in the width direction and a lower fitting bend 22 provided on both sides in the width direction at a predetermined distance from the upper steel plate 10, A lower steel plate 20 provided between the upper steel plate 10 and the lower steel plate 20 and having an upper fitting bend located on the left side of the upper steel plate 10, A left side plate 30 and a right side plate 30 which are located between the upper and lower steel plates 10 and 20 and are located on the right side of the upper steel plate 10, A right side plate 40 having an upper end and a lower end which are respectively in contact with the upper end bending portion and the lower end bending portion located on the right side of the lower steel plate and the upper plate 10, the lower plate 20, the left plate 30, And a foamed urethane foam 50 foamed in the inner space surrounded by the right side plate 40 The.

In the present invention, a coating film 60 is further formed on the surfaces of the upper steel plate 10 and the lower steel plate 20 by an anti-salt agent. Since the known antihalation agent is used as the antihalation agent, detailed description thereof will be omitted.

The upper steel plate 10 includes an upper plate 11 having a flat plate shape or concavo-convex shape and an upper fitting bend 12 formed at both ends of the upper plate 11 in the width direction.

The upper end bending portion 12 is formed to extend from the upper surface plate 11 of the upper steel plate and includes an upper vertical bending portion 13 formed by bending perpendicularly to the upper surface plate 11, And an upper horizontal bending portion 14 formed to extend in parallel to the upper plate 11 and bent inward in the urethane panel.

The lower steel plate 20 includes a lower plate 21 having a plate or concavo-convex shape and a lower end bending portion 22 formed at both ends of the lower plate 21 in the width direction.

The lower end bending portion 22 includes a lower vertical bending portion 23 formed to extend from the lower side plate 21 of the lower steel plate and bent so as to be perpendicular to the lower side plate 21, And a lower end horizontal bending portion 24 formed to extend in parallel to the lower surface plate 21 and bent inward in the urethane panel.

That is, the upper fitting bend portion 12 is formed to have a letter 'A' shape at both ends in the width direction of the upper plate 11 by the upper vertical bending portion 13 and the upper horizontal bending portion 14, The lower end bending portion 22 is formed to have a letter "A" shape at both widthwise ends of the lower surface plate 21 by the lower vertical bending portion 23 and the lower horizontal bending portion 24.

The upper and lower steel plates 10 and 20 thus configured have a cross-sectional structure of 'C' shape on both sides in the width direction by the upper / lower end fitting bends 12 and 22 having 'A' shape.

As described above, the upper steel plate 10 and the lower steel plate 20 have the same configuration and are vertically symmetrically positioned to face each other with the urethane foam 50 as a center when the urethane panel 80 is molded.

The upper steel plate 10 and the lower steel plate 20 may be made of any metallic material or non-metallic material that can be used for the urethane panel 80 such as a galvanized steel sheet.

The left side plate 30 includes a left side cylindrical tube 31 installed to be embedded in a urethane foam, a flat plate-like left side plate 32 formed integrally with the outer surface of the left side cylindrical tube 31, A left side inclined plate 33 extending in the direction in which the left side cylindrical tube 31 is positioned and having a predetermined inclination angle at the upper and lower ends of the left side plate 32 and a left side inclined plate 33 extending in the left side inclined plate 33 in parallel with the left side plate 32 A left support plate 35 extending from the end of the flat plate 34 in the direction of the left side plate 32 so as to be perpendicular to the flat plate 34 and a left support plate 35 extending parallel to the left side plate 32 And a left contact plate 36 integrally formed on the end of the left support plate 35 and inserted into the upper and lower end fitting bends 12 and 22 of the upper and lower steel plates 10 and 20.

The left side plate further includes a left side reinforcing plate 37 formed integrally with the left side support plate 35 so as to be spaced apart from the left side contact plate 36 and parallel to the left side contact plate 36.

The left side plate 30 thus formed is positioned so that the left side cylindrical tube 31 is positioned in the inward direction B of the urethane panel 80 so as to be embedded in the urethane foam 50 and the left side plate 32 and the left side side inclined plate 33 The upper and lower steel plates are connected to the upper and lower end fitting bends 12 and 22 so as to form the convex portion 38 in the outer direction of the urethane panel 80. [

When the left side plate 30 is fitted to the upper and lower end fitting bends 12 and 22 by the foamed urethane foam 50, the left side slope plate 33 and the flat plate 34, The upper and lower end horizontal bent portions 14 and 24 of the upper and lower end fitting bends are inserted into the fitting groove 39 of the left side plate formed by the left and right support plates 35 and 35, The upper and lower vertical bending portions 14 and 24 of the lower end bending portion are brought into face contact with each other so that the left contact plate 36 and the upper and lower vertical bending portions 13 and 23 of the upper and lower end bending portions are in surface contact .

The right side plate 40 is connected to the right side of the upper and lower steel plates 10 and 20 so as to have a concave portion 48 corresponding to the convex portion 38 of the left side plate 30 As a result,

A right side cylindrical tube 41 installed to be embedded in the urethane foam 50, a flat right side plate 42 integrally joined to the outer surface of the right side cylindrical tube 41, A right inclined plate 43 extending in the direction opposite to the direction in which the right cylindrical pipe 41 is positioned, that is, in the direction of the outer side A of the urethane panel, which is formed at the upper and lower ends of the right side plate 42, A right side contact plate 46 extending upwardly / downwardly from the end of the right side support plate 45 so as to be parallel to the right side plate 42b, .

The right side plate 40 is integrally formed with the right side plate 46 so as to be spaced apart from the right side contact plate 46 in the direction of the right side plate 42 and parallel to the right side contact plate 46 Lt; / RTI >

The right side plate 40 thus formed is positioned so that the right side cylindrical pipe 41 is positioned in the inward direction B of the urethane panel 80 so as to be embedded in the urethane foam 50 and the right side plate 42 and the right side plate 42 Bottom fitting bends 12 and 22 of the upper and lower steel sheets so that recesses 48 are formed in the outward direction of the urethane panel 80 by means of the upper and lower steel sheets.

When the right side plate 40 is fitted to the upper and lower end fitting bends 12 and 22 by the foamed urethane foam 70, the right side contact plate 46 of the right side plate is engaged with the upper / And the right side support plate 45 of the right side plate is in contact with the upper and lower vertical bent portions 13 and 23 of the bent portion so that the right side plate 45 is brought into contact with the upper and lower end horizontal bent portions 14 and 24 of the upper / (40) is inserted into the upper / lower end fitting bends.

The left and right cylindrical tubes 31 and 41 are formed by inserting a cylindrical binder 70 into the urethane panel 80 when the urethane panel 80 is assembled to improve the assemblability of the urethane panel 80, Rigidity is imparted to prevent deformation of the left and right side plates 32, 42 from the expansion pressure of the foamed urethane foamed to form the urethane foam.

The left and right cylindrical tubes 31 and 41 are formed with protruding grooves 31a and 41a and the protruding grooves 31a and 41a are inserted into the left and right cylindrical tubes 31 and 41, The position of the cylindrical binder 70 is set to improve the assemblability and the left and right cylindrical tubes 31 and 41 themselves are given a predetermined rigidity to further improve the durability.

The left and right cylindrical tubes 31 and 41 are further provided with a plurality of blade plates 31b and 41b parallel to the left and right side plates 32 and 42. The blade plates 31b and 41b are made of urethane When the foam is molded, it is embedded in the urethane foam and the left and right side plates 30 and 40 are more firmly connected to the foamed urethane foam 50.

The left and right cylindrical tubes 31 and 41 may further include a plurality of through holes 31c and 41c that are spaced apart from each other and communicate with the inside and outside of the left and right cylindrical tubes. 41c discharge the gas generated in the foaming molding of the urethane through the left and right cylindrical tubes 31, 41 to the outside to prevent embossing on the surface of the urethane panel 80. [

That is, when the urethane foam is foamed and molded in the closed space between the upper / lower steel plates 10, 20 and the left and right side plates 30, 40, The embossing phenomenon may occur in the upper and lower steel plates 10 and 20 due to the gas, but the through holes 31c and 41c are formed in the left and right cylindrical pipes 31 and 41 The predetermined amount of gas is introduced into the left and right cylindrical tubes 31 and 41 through the through holes 31c and 41c to be discharged to prevent the embossing phenomenon.

The left side plate 30 and the right side plate 40 constituted as described above can be used in the process of manufacturing a urethane panel by using an expanding force of foaming urethane foam (raw liquid) sprayed to form the urethane foam 50, The left and right side plates 30 and 40 are moved in close contact with the both sides in the width direction of the urethane panel 70 to be brought into contact with the upper and lower end fitting bends 12 and 22 of the upper and lower steel plates 10 and 20 The upper and lower ends of the left and right side plates 30 and 40 are respectively inserted and coupled.

The left and right side plates 30 and 40 thus configured prevent a large amount of urethane foam and foaming gas from leaking in the width direction during the manufacture of the urethane panel 70, , The urethane panel is assembled and installed by the concave and convex fitting method.

The left side plate width W1 of the left side plate 30 is smaller than the right side plate width W2 of the right side plate 40 and the height from the left side plate 32 of the left side plate 30 to the flat plate 34 (h1) is larger than the height (h2) from the right side plate (42) of the right side plate to the right side contact plate (46)

When the urethane panel is assembled so that the right side of the right side plate of the right urethane panel is in contact with the left side plate of the left side plate of the one side urethane panel so as to be in surface contact with the left side side inclined plate 33 and the right side support plate 45 of the right side plate Not only the inner space 91 in which the coating material 90 is injected and filled is formed between the upper and lower horizontal bending portions 14 and 24 to be installed,

Between the upper and lower vertical bending portions (13, 23) coupled to the left side plate of the one-side urethane panel and the upper and lower vertical bending portions (13, 23) coupled to the right side plate of another right side plate, And an outer space 92 communicating with the outer circumferential surface 91 and filled with the coating material 90 is formed.

The urethane foam 50 is formed by injection foaming and curing of a foamed urethane in which a polyol, an isocyanate, a flame retardant, a foaming agent and other additives are heated and mixed. The urethane foam is classified into a building material grade [DIN 4102] B2 (flame retardant) (Flame retardant tertiary-ISO 5660-1).

The foamed urethane is produced by mixing 150 to 180 parts by weight of methylene diphenyl diisocyanate, 1.6 to 1.8 parts by weight of a catalyst (potassium 2-ethylhexanoate, potassium 2-ethylhexanoate), 100 parts by weight of a flame retardant (trichloropropene phosphite , TCPP) and 5 to 18 parts by weight of a foaming agent (1,1-dichloro-1-fluoroethane). The foamed urethane may further contain other additives such as a cross-linking agent, a surfactant, and a stabilizer. Such other additives may be added to the known urea resins, and therefore, a detailed description thereof will be omitted.

At this time, the polyol may be a polyester polyol alone or a mixed polyol containing 70 to 95 wt% of a polyester polyol and 5 to 30 wt% of a polyether polyol, preferably a polyester polyol.

The average NCO% of the methylenediphenyl diisocyanate is preferably from 29 to 33, and when it is less than 29%, the fluidity is deteriorated. When it exceeds 33%, the dimensional stability is deteriorated.

The foamed urethane (raw solution) has a viscosity (cps at 25 ° C) of 2,250 ± 350, specific gravity (25 ° C) of 1.24 ± 0.01, a cream time of 11 to 12 sec (average of 12 sec) 58 to 62 sec (average 60 sec), and a free foaming density of 42.2 to 46.0 kg / m3.

The urethane foam 50 molded by the foamed urethane has a density (ASTM D 1622) of 43 to 50 kg / m 3 and a thermal conductivity (ASTM C 177) of 168 10 ^{-4 to} 175 10 ^-4 ㎉ / mh ° C (ASTM D 2821), 1.01 to 1.32 g / 100 cm 2, ASTM D 2856, ASTM D 732, (ASTM D 2126) having excellent dimensional stability (-30 ° C. (24 hr) -0.78% to -0.85%, 70 ° C., 95% RH, 24 hrs of 2.65% A urethane panel having a length of 10 m or more can be continuously formed by physical properties.

If the density of the urethane foam 50 is less than 43 kg / m 3, voids may be formed between the upper / lower steel sheets and the foamed urethane foam, or voids may be generated in the urethane foam due to shrinkage after foam molding When the density is more than 50 kg / m 3, the thickness of the urethane panel is not constant due to the expansion force of the foamed urethane, and the occurrence of the defective rate becomes high. In addition, the urethane foam has an excellent closed cell ratio and has excellent heat insulating property due to low thermal conductivity.

The coating film 60 is coated on the surfaces of the upper steel plate 10 and the lower steel plate 20, that is, the upper plate 11 and the lower plate 21 during the manufacturing process of the urethane panel 80 . After the urethane panel 80 passes through the upper and lower pair of coating rollers coated with the anti-salt agent, the anti-salt agent is applied to the surface of the upper and lower steel plates 10 and 20, Lt; RTI ID = 0.0 > 40 C < / RTI >

Further, in the present invention, the left and right side plates (30, 40) are further provided with a cylindrical joint member (70) for improving the assemblability of the urethane panel.

The cylindrical joint member 70 closes the upper and lower ends of the left and right cylindrical tubes 31 and 41 formed on the left and right side plates 30 and 40 and the lower end of the connecting and fixing ring 77 are combined to firmly connect and connect the one-side urethane panel 80 and another urethane panel 80 'in contact therewith.

That is, the cylindrical binder 70 has a cylindrical plug 71 which is in surface contact with and inserted into the left and right cylindrical tubes 31 and 41 and a cylindrical plug 70 having a predetermined depth on the upper surface 72 of the plug 71 A connecting groove groove 74 in which an opening 73 is formed at one side and into which a horizontal hook 78 of the connecting fixing hook 77 is inserted and a vertical groove 76 formed to be positioned in the connecting groove groove 74, And a fixed engagement groove 75 into which the ring 79 is inserted and coupled.

When the left side plate of the one-side urethane panel and the right side plate of another urethane panel are assembled by the convex-concave method, the cylindrical connecting member 70 having the above- And the left and right side plates 30 and 40 are respectively fitted so that the openings 73 face each other.

The cylindrical fitting 70 has protrusions 76 protruding from one side of the stopper 71 to be inserted into the protruding grooves 31a and 41a formed in the left and right cylindrical pipes. The projection 76 is for setting the position of the cylindrical binder 70 coupled to the left and right cylindrical tubes 31 and 41. The projection 76 is formed so as to be inserted into the projection grooves 31a and 41a, When the cylindrical connector 70 is fitted into the cylindrical tubes 31 and 41 so that the openings 73 of the connecting ring grooves face each other when the urethane panel is assembled and installed, Respectively.

Hereinafter, an installation method using the urethane panel according to the present invention will be described.

The present invention provides a method for installing a thermal insulation of a refrigeration / refrigeration storage facility using a urethane panel (80), comprising:

Fitting a cylindrical binder 70 into upper and lower open ends of the left and right cylindrical tubes 31 and 41 formed on the left and right side plates 10 and 20 of the urethane panel, respectively;

The left side plate 30 of the urethane panel is bonded to another urethane substrate so that the left side plate 32 formed on the left side plate 10 of the urethane panel and the right side plate 42 formed on the right side plate 40 of another urethane panel are in surface- A right panel (40) of the panel;

The cylindrical coupling member 70 coupled to the left side plate 30 of the urethane panel and the cylindrical coupling member 70 coupled to the right side plate 40 of another urethane panel are connected by the connection fixing ring 77 to the urethane panel 80 );

A caulking recharging step of injecting and filling the coating material 90 into the inside / outside spaces 91 and 92 formed between the left side plate 30 of the urethane panel and the right side plate 40 of another urethane panel coupled thereto However,

The cylindrical coupling member 70 has a cylindrical plug 71 which is in surface contact with and inserted into the left and right cylindrical tubes 31 and 41 and a cylindrical plug 70 which has a predetermined depth on the upper surface 72 of the plug 71, A connection ring groove 74 in which an opening 73 is formed and into which a horizontal ring 78 of the connection fixing ring is inserted and a vertical ring 79 formed in the connection ring groove 74, And a fixed engagement groove 75 which is inserted and joined.

The cylindrical fitting member fitting step is a step of inserting the cylindrical fitting member 70 into the left cylindrical pipe 31 formed in the left side plate 30 of the urethane panel and the right side cylindrical pipe 41 formed in the right side plate 40,

When the left side plate of the one-side urethane panel and the right side plate of another urethane panel are assembled by a concave-convex method, the left side plate and the right side plate are provided with the left side plate and the right side plate, And the cylindrical joint member is inserted into the left and right cylindrical tubes of the right side plate.

The urethane panel alignment step aligns the urethane panel so that the convex portion 38 formed on the left side plate of one side urethane panel is inserted into the concave portion 48 formed on the right side plate of another urethane panel As a result,

In the case where the urethane panel is assembled so that the right side of the right side plate of another urethane panel is brought into surface contact with the left side plate of the one side urethane panel left side plate by the concave-

The left side plate 31 of the left side plate and the right side plate 41 of the right side plate are in surface contact with each other,

An inner space 91 in which the coating material 90 is injected and filled between the left swash plate 33 of the left plate and the upper and lower horizontal bends 14 and 24 provided to be in surface contact with the right support plate 45 of the right plate, In addition,

Upper and lower vertical bending portions 13 and 23 coupled to the left side plate of the one-side urethane panel and upper and lower vertical bending portions 13 and 23 coupled to the right side plate of another right side plate are spaced apart from each other, And an outer space 92 through which the coating material 90 is injected and filled is formed.

In the connection fixing step, the upper and lower ends of the two urethane panels, which are in contact with the left side plate of the left plate and the right side plate of the right plate, are connected by the connection fixing ring 77, The vertical hooks 78 of the connection fixing hooks are inserted into the coupling groove grooves 74 of the cylindrical coupling member provided on the right side plate and the vertical hooks 75 formed perpendicularly to both ends of the horizontal hooks into the fixing engagement grooves 75 The cylindrical coupling members 70 provided on the left and right side plates 30 and 40 are connected to each other by the coupling fixing ring 77. [

The coating material filling step fills and fills the coating material 90 into the inner space 91 and the outer space 92 formed between the left side plate and the right side plate when the urethane panel is assembled and connected. In this case, since the left side plate of the urethane panel and the right side plate of another urethane panel which are coupled to each other are in surface contact with the left side plate and the right side plate, when the coating material is injected and charged into the inner space and the outer space, The connection part is connected in a sealed state without a gap.

Thus, when the caulking material 90 is filled and filled in the outer space 92 and the inner space 91, the left side plate of the one-side urethane panel and the right side plate of the other urethane panel are completely unevenly engaged with each other without any gap, A gap is not generated between the inner and outer portions of the connection portion during continuous assembly.

Hereinafter, the present invention will be described in detail with reference to the following examples.

Example

The upper and lower ends of the left and right plates made of synthetic resin were fitted to upper and lower ends of the upper and lower steel plates, respectively, made of a galvanized steel sheet (thickness: 0.45 mm). Urethane foam After the molded urethane panel was manufactured, the flame retardancy was tested, and the results are shown in Table 1 below.

[Table 1]

As shown in Table 1, it can be seen that the urethane panel according to the present invention has physical properties suitable for the criteria of Flame Retardant Material of Notification No. 2012-624 of the Ministry of Land, Transport and Maritime Affairs, I did.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

(10): upper steel plate (11): upper plate
(12): upper fitting bend (13): upper vertical bending portion
(14): upper horizontal bending portion (20): lower steel plate
(21): Lower plate (22): Lower fitting bend
(23): Lower vertical bend (24): Lower horizontal bend
(30): Left side plate (31): Left side tube
(32): Left side plate (33): Left side swash plate
(34): Balance plate (35): Left support plate
(36): left contact plate (37): left reinforcing plate
(38): convex portion (39): fitting groove
(40): right side plate (41): right side tube
(42): right side plate (43): right side inclined plate
(45): right support plate (46): right contact plate
(47): right reinforcing plate (48): concave portion
(31a, 41a): projecting grooves (31b, 41b): wing plate
(31c, 41c): Through hole (50): Urethane foam
(60): Coating film (70): Cylindrical binder
(71): cap (72): upper surface
(73): opening (74): connecting groove groove
(75): fixed engagement groove (76): projection
(77): connection retaining ring (78): horizontal ring
(79): Vertical ring (80): Urethane panel
(90): Coating material (91): Inner space
(92): outer space

Claims (16)

An upper steel plate 10 having upper fitting bends 12 at both sides in the width direction,
A lower steel plate 20 spaced apart from the upper steel plate 10 by a predetermined distance and provided at both sides in the width direction with a lower end bending portion 22,
The upper end of the upper steel plate 10 and the lower end of the lower steel plate 20 are positioned to be positioned between the upper steel plate 10 and the lower steel plate 20, A left side plate 30 to which the lower end is in contact,
The upper and lower ends of the upper steel plate 10 and the lower steel plate 20 are respectively inserted into the upper and lower bent portions located on the right side of the upper steel plate 10 and the lower side of the lower steel plate, A right side plate 40 to be contacted,
A urethane foam 50 foamed and formed in an inner space surrounded by the upper steel plate 10, the lower steel plate 20, the left plate 30 and the right plate 40,
And a cylindrical binder 70 installed on the left and right side plates 30 and 40,
The cylindrical binder 70 includes a cylindrical plug 71 which is in surface contact with and fits into the right cylindrical tube 41 of the left cylindrical tube 31 and the right cylindrical tube 41 of the left cylindrical tube 30, A connecting ring groove 74 having a predetermined depth in an upper surface 72 of the connection fixing ring 71 and formed with an opening 73 at one side thereof and into which a horizontal ring 78 of the connection fixing ring 77 is inserted, And a fixed engagement groove (75) formed to be positioned in the groove (74) and into which the vertical hook (79) of the connection fixing ring is inserted and engaged.
The method of claim 1,
Wherein a coating film (60) is further formed on the surfaces of the upper steel plate (10) and the lower steel plate (20) by a salt inhibitor.
The method of claim 1,
The upper end bending portion 12 is formed to extend from the upper surface plate 11 of the upper steel plate and includes an upper vertical bending portion 13 formed by bending perpendicularly to the upper surface plate 11, And an upper horizontal bending portion 14 formed to extend in the width direction of the upper plate 11 so as to extend in parallel to the upper plate 11 and to be bent in the inner direction of the urethane panel, Shaped,
The lower end bending portion 22 includes a lower vertical bending portion 23 formed to extend from the lower surface plate 21 of the lower steel plate and bent so as to be orthogonal to the lower surface plate 21, And a lower end horizontal bending portion 24 formed to extend in the width direction 23 of the lower plate 21 and bent inward in the urethane panel so as to be parallel to the lower plate 21, Shape,
The upper steel plate 10 and the lower steel plate 20 have a cross-sectional structure of 'C' shape on both sides in the width direction by the upper fitting bend 12 and the lower fitting bend 22 having ' Flame retardant sandwich urethane panel for refrigerating and freezing facilities.
The method of claim 1,
The left side plate 30 includes a left side cylindrical tube 31 installed to be embedded in the urethane foam, a flat plate-like left side plate 32 integrally formed with the outer surface of the left side cylindrical tube 31, A left side inclined plate 33 extending in a direction in which the left side cylindrical tube 31 is positioned and having a predetermined inclination angle at the upper and lower ends of the left side plate 32 and a left side inclined plate 33 extending in parallel with the left side plate 32 A left support plate 35 extending from the end of the flat plate 34 in the direction of the left side plate 32 so as to be perpendicular to the flat plate 34 and a left support plate 35 parallel to the left side plate 32, And a left contact plate 36 integrally formed at an end of the left support plate 35 and inserted into the upper and lower end fitting bends 12 and 22 of the upper and lower steel plates 10 and 20,
The right side plate 40 is provided with a right side cylindrical pipe 41 which is installed to be embedded in the urethane foam 50 and a flat right side plate 42 which is integrally joined to the outer surface of the right side pipe 41 A right swash plate 43 extending in the direction opposite to the direction in which the right circular tube 41 is positioned, that is, in the outer side A of the urethane panel, the right swash plate 43 having a predetermined inclination angle at the upper and lower ends of the right- A right side support plate 45 extending from the right side support plate 45 in a direction perpendicular to the right side plate 42 and a right side support plate 45 extending in the upward / downward direction at the end of the right side support plate 45 so as to be parallel to the right side plate 42b. And a right contact plate (46) formed on the right side of the flame retardant panel (46).
The method of claim 4,
The left side plate 30 further has a left side reinforcing plate 37 formed integrally with the left side support plate 35 so as to be spaced apart from the left side contact plate 36 and parallel to the left side contact plate 36,
The right side plate 40 is provided with a right side reinforcing plate 47 integrally formed on the right side support plate 45 so as to be spaced apart from the right side contact plate 46 in the direction of the right side plate 42 and in parallel with the right side contact plate 46 Flame retardant sandwich urethane panel for refrigeration and freezer facilities.
The method of claim 4,
Characterized in that the left cylindrical pipe (31) and the right cylindrical pipe (41) are further provided with a left side plate (32) and a plurality of vane plates (31b, 41b) parallel to the right side plate Sandwich urethane panels.
The method of claim 4,
And a plurality of through holes (31c, 41c) are formed in the left cylindrical pipe (31) and the right cylindrical pipe (41) at predetermined intervals, respectively.
delete The method of claim 1,
The left cylindrical tube 31 and the right cylindrical tube 41 are provided with projecting grooves 31a and 41a, respectively,
The cylindrical binder 70 has a protrusion 76 protruding from one side of the stopper 71 and inserted into the protruding grooves 31a and 41a formed in the left and right cylindrical pipes. .
The method of claim 4,
The left side plate width W1 of the left side plate 30 is smaller than the right side plate width W2 of the right side plate 40 and the height h1 from the left side plate 32 of the left side plate to the flat plate 34, Is greater than the height (h2) from the right side plate (42) to the right side contact plate (46) of the right side plate.
The method of claim 1,
The urethane foam 50 is prepared by mixing 150 to 180 parts by weight of methylene diphenyl diisocyanate, 1.6 to 1.8 parts by weight of a catalyst (potassium 2-ethylhexanoate, Potassium 2-ethylhexanoate), 100 parts by weight of a flame retardant And 5 to 18 parts by weight of a blowing agent (1,1-dichloro-1-fluoroethane), which is characterized by being foam-molded by foamed urethane, Flame retardant sandwich urethane panels for refrigeration and freezers.
The method of claim 1 or 11,
The urethane foam 50 has a density (ASTM D 1622) of 43 to 50 kg / m 3, a thermal conductivity (ASTM C 177) of 168 x 10 ^{-4 to} 175 x 10 ^-4 ㎉ / (ASTM D 2890) of 1.0 to 1.3 g / 100 cm 2, and a closed cell ratio (ASTM D 2856) of 90.2 to 94.8% in terms of the bending strength (ASTM D 790) of 3.1 to 3.8 kg / Features flame retardant sandwich urethane panels for refrigeration and freezers.
A method of installing a freezing / refrigerating storage facility using a urethane panel (80), the method comprising:
Fitting a cylindrical binder 70 into upper and lower open ends of the left and right cylindrical tubes 31 and 41 formed on the left and right side plates 10 and 20 of the urethane panel, respectively;
The left side plate 30 of the urethane panel is bonded to another urethane substrate so that the left side plate 32 formed on the left side plate 10 of the urethane panel and the right side plate 42 formed on the right side plate 40 of another urethane panel are in surface- A right panel (40) of the panel;
The cylindrical coupling member 70 coupled to the left side plate 30 of the urethane panel and the cylindrical coupling member 70 coupled to the right side plate 40 of another urethane panel are connected by the connection fixing ring 77 to the urethane panel 80 );
A caulking recharging step of injecting and filling the coating material 90 into the inside / outside spaces 91 and 92 formed between the left side plate 30 of the urethane panel and the right side plate 40 of another urethane panel coupled thereto Wherein the flame retardant sandwich urethane panel installation method is applied to a refrigerator and a refrigerator.
14. The method of claim 13,
The cylindrical coupling member 70 has a cylindrical plug 71 which is in surface contact with and inserted into the left and right cylindrical tubes 31 and 41 and a cylindrical plug 70 which has a predetermined depth on the upper surface 72 of the plug 71, A connection ring groove 74 in which an opening 73 is formed and into which a horizontal ring 78 of the connection fixing ring is inserted and a vertical ring 79 formed in the connection ring groove 74, And a fixing engagement groove (75) inserted and joined to the flame retardant panel.
14. The method of claim 13,
In the urethane panel alignment step, the urethane panel is disposed such that the convex portion 38 formed on the left side plate of the one-side urethane panel is inserted into the concave portion 48 formed on the right side plate of another urethane panel However,
The left side plate 31 of the left side plate and the right side plate 41 of the right side plate are in surface contact with each other,
An inner space 91 in which the coating material 90 is injected and filled between the left swash plate 33 of the left plate and the upper and lower horizontal bends 14 and 24 provided to be in surface contact with the right support plate 45 of the right plate, Is formed,
Upper and lower vertical bending portions 13 and 23 coupled to the left side plate of the one-side urethane panel and upper and lower vertical bending portions 13 and 23 coupled to the right side plate of another right side plate are spaced apart from each other, Wherein the outer space (92) in which the coating material (90) is injected and filled is formed in such a manner as to be communicated with the inner space (92) of the flame retardant sandwiched urethane panel.
14. The method of claim 13,
The urethane foam 50 is prepared by mixing 150 to 180 parts by weight of methylene diphenyl diisocyanate, 1.6 to 1.8 parts by weight of a catalyst (potassium 2-ethylhexanoate, Potassium 2-ethylhexanoate), 100 parts by weight of a flame retardant Propylenephosphate, TCPP), 5 to 18 parts by weight of a foaming agent (1,1-dichloro-1-fluoroethane)
(ASTM D 1622) of from 43 to 50 kg / m 3, a thermal conductivity (ASTM C 177) of from 168 x 10 ^{-4 to} 175 x 10 ^-4 ㎉ / mh 캜, a compressive strength of from 1.7 to 4.20 kg / (ASTM D 790) of 3.1 to 3.8 kg / cm 2, a water absorption rate (ASTM D 2842) of 1.01 to 1.32 g / 100 cm 2, and a closed cell ratio (ASTM D 2856) of 90.2 to 94.8% How to install flame retardant sandwich urethane panel.

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