KR101923016B1 - Refrigerant box of airconditioner for preventing condensation - Google Patents

Abstract

According to the present invention, a refrigerant box of an air conditioner for preventing condensation comprises: a body installed to be embedded on a wall surface in a building, wherein a front portion is formed to be open, and an installation space is formed for a refrigerant pipe to pass therethrough; a cover opening and closing the front portion opened in the body; a first insulating unit finished on a rear surface and an external wall surface of the body; and a second insulating unit individually applied to the rear surface and the external wall surface of the body and a surface of the first insulating unit to form an insulating layer by insulating paint. According to the present invention, the remaining surface except for a front surface of the refrigerant box body, an insulating layer with insulating paint and another insulating layer with an insulating material and insulating paint are triply realized to effectively prevent condensation, and a thickness of the insulating material can be reduced through effective condensation prevention of the insulating paint.

Description

REFRIGERANT BOX OF AIRCONDITIONER FOR PREVENTING CONDENSATION FIELD OF THE INVENTION [0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an air conditioner refrigerant box for preventing condensation, and more particularly to a refrigerant box for preventing condensation inside.

Generally, an air conditioner is a system in which a plurality of indoor units are connected to one outdoor unit, so that various types of indoor air conditioning can be performed.

The refrigerant pipe connecting the indoor unit and the outdoor unit is buried when the floor and concrete are laid so as not to be exposed to the user's indoor space, The connection is made in the joint box embedded in the wall.

The joint box for connection of the air conditioner piping forms a connection space for accommodating a connection portion such as a buried pipe and an external pipe. A plurality of pipe through holes are formed and a lid is provided at the front.

Such a technology relating to a box for connecting an air conditioner pipe has been proposed in Korean Patent No. 1089588 and Korean Laid-Open Patent Application No. 2013-0094946.

Patent Document 1 discloses that a buried pipe embedded in wall concrete is spaced apart from the inner surface of the joint box by a distance corresponding to the length of the gap holding member fixed to the inner surface of the joint box and a socket provided in the buried pipe is arranged along the rail There is disclosed a piping connection apparatus for an air conditioner which keeps buried piping irregularly buried in wall concrete at a predetermined interval while being moved.

However, in Patent Document 1, since the air conditioner pipe is located inside the joint box, there is a problem that condensation phenomenon occurs inside due to the temperature difference with the outside.

Patent Document 2 discloses a condensation-preventing air conditioner pipe joint box for wrapping a pair of pipes provided in a housing with a pipe protecting member and filling a foam insulating material into a pipe protecting member.

Here, in Patent Document 2, since the heat insulating sheet is provided only on the mounting surface that is recessed on the outer surface of the housing, the heat insulating performance is limited because the housing is not wrapped.

Further, with another conventional technique, there is a method of increasing the thickness of the heat insulating material on the outer wall surface of the box in order to improve the heat insulating effect. However, there is a problem that the maximum thickness of the heat insulating material is limited because of the limitation of the thickness of the heat insulating material.

Korean Registered Patent No. 1089588 (Registered on November 29, 2011). Korean Laid-Open Patent No. 2013-0094946 (Disclosure Date: 2013.08.27.)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a heat insulating layer using a heat insulating layer, And to provide an air conditioner refrigerant box capable of reducing the thickness of the heat insulating material by effectively preventing condensation of the heat insulating coating.

According to an aspect of the present invention, there is provided an air conditioner refrigerant box for dew condensation prevention, comprising: a body installed in an inner wall of a building and having a front surface opening and an installation space through which a refrigerant pipe passes; A cover for opening and closing an opened front portion of the body; A first heat insulating part closed on a rear surface and an outer surface of the body; And a second adiabatic portion coated on the back surface and the outer wall surface of the body and the surface of the first adiabatic portion to form a heat insulating layer by the adiabatic paint.

The first heat insulating portion may have an area corresponding to each of the bottom surface and the outer wall surface of the body, and may be attached to the bottom surface and the outer wall surface of the body by adhering the respective contact surfaces.

The first heat insulating portion may be a foamed polystyrene layer.

The first adiabatic portion may be finished with an inner and outer galvanized steel sheets on at least one surface of both surfaces of the expanded polystyrene layer.
According to another aspect of the present invention, there is provided a refrigerator comprising: a body embedded in a wall surface of a building, having a front surface formed with an opening and an installation space through which a refrigerant pipe passes; A cover for opening and closing an opened front portion of the body; A first heat insulating part closed on a rear surface and an outer surface of the body; And a second adiabatic part formed on the back surface and the outer wall surface of the body and on the surface of the first adiabatic part and formed with a heat insulating layer by a heat insulating paint, A vertical surface heat insulating member and a rear surface heat insulating member so as to adhere the respective contact surfaces to the bottom surface and the outer wall surface of the body, and the horizontal surface heat insulating member, the vertical surface heat insulating member, And the layer formed on the surface of the first adiabatic portion of the second adiabatic portion are connected to each other when the horizontal surface heat insulating member, the vertical surface thermal insulating member, and the rear surface thermal insulating member are connected The vertical surface heat insulating member and the rear surface heat insulating member, which are finished on the bottom surface and the outer surface of the body, The layer may be formed by coating.

According to the present invention, it is possible to effectively prevent condensation by implementing a heat insulating layer using a heat insulating layer, a heat insulating material and a heat insulating layer using a heat insulating paint on the remaining surface except for the front surface of the refrigerant box body and to prevent effective condensation of the heat insulating paint. It is possible to reduce the thickness.

1 is an exploded perspective view showing an air conditioner refrigerant box for preventing condensation according to the present invention.
2 is a perspective view illustrating a state where first and second heat insulating portions are provided on a body of the air conditioner refrigerant box for preventing condensation according to the present invention.
3 is a front view showing a state where the first and second heat insulating portions are provided on the body of the air conditioner refrigerant box for preventing condensation according to the present invention.
4 to 7 are enlarged cross-sectional views illustrating a first heat insulating portion of an air conditioner refrigerant box according to an embodiment of the present invention.

These and other objects, features and other advantages of the present invention will become more apparent by describing in detail preferred embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, an air conditioner refrigerant box according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an exploded perspective view showing an air conditioner refrigerant box for preventing condensation according to the present invention, FIG. 2 is a perspective view showing a state where first and second heat insulating parts are provided on a body of an air conditioner refrigerant box for preventing condensation according to the present invention, 3 is a front view showing a state where the first and second heat insulating portions are provided on the body of the air conditioner refrigerant box according to the present invention, and FIGS. 4 to 7 illustrate a first heat insulating portion of the air conditioner refrigerant box according to the present invention And FIG.

1 to 7, the air conditioner refrigerant box 100 according to the present invention includes a body 110, a cover 120, a first heat insulating part 130, and a second heat insulating part 140 .

The body 110 is closed at its rear side and includes an installation space 112 formed at an inner side where a wall surface is formed along the rear edge so that a refrigerant pipe or the like can be installed, And a support protrusion 114 protruded to support the position.

Here, the body 110 is placed on the inner wall surface of the building, and the concrete is buried in the embedding hole 10 formed on the wall surface.

Furthermore, the body 110 may have a through-hole to allow the refrigerant pipe or the like to pass through the upper and lower surfaces thereof.

The cover 120 is formed in a plate shape to open and close the opened front portion of the body 110. At this time, the cover 120 may be fixed to the body 110 by bolting.

The first heat insulating part 130 is a heat insulating material that is finished on the back surface and the upper and lower left and right outer wall surfaces of the body 110. The first heat insulating part 130 is individually formed so as to have an area corresponding to the back surface of the body 110, Are adhered to each other by a bonding agent or the like.

To this end, the first heat insulating part 130 includes a horizontal surface insulating member 132, a vertical surface insulating member 134, and a rear surface insulating member 136.

Each of the horizontal surface heat insulating member 132, the vertical surface heat insulating member 134 and the rear heat insulating member 136 is formed by covering both surfaces of the expanded polystyrene layer 130a with the inner and outer galvanized steel sheets 130b .

At this time, the foamed polystyrene layer 130a may be formed to a thickness of 10 to 15 mm, and the inner and outer galvanized steel sheets 130b may be formed to a thickness of 0.2 to 0.6 mm.

Here, the adhesive layer 130c is applied to the back surface of the inner and outer galvanized steel sheets 130b, which are attached to the back surface and the upper, lower, left, and right outer wall surfaces of the body 110, and can be easily bonded to the surface of the body 110.

The horizontal surface heat insulating member 132 and the vertical surface heat insulating member 134 are formed with a slit-shaped hole through which the support protrusion 114 partially formed on the surface of the body 110 when the body 110 is attached.

As shown in FIG. 5, the first heat insulating portion 130-1 of another embodiment is an embodiment showing only the structure of the expanded polystyrene layer 130a without the inner and outer galvanized steel sheets.

In the first heat insulating portion 130-2 of another embodiment, an outer galvanized steel sheet 130b spaced apart from the body is provided in the expanded polystyrene layer 130a as shown in FIG.

The first heat insulating portion 130-3 of another embodiment is an embodiment in which the inner zinc plated steel sheet 130b on the body side is provided in the expanded polystyrene layer 130a as shown in FIG.

Although not shown in the drawings, the connecting surfaces of the horizontal surface heat insulating member 132, the vertical surface insulating member 134, and the rear surface insulating member 136 may be connected in a concavo-convex shape. The connection surfaces of the horizontal surface heat insulating member 132, the vertical surface heat insulating member 134 and the rear surface heat insulating member 136 constituting the first heat insulating part 130 are connected to each other in the form of concave and convex, . For this, protrusions (or grooves) in the width direction are formed at both ends of the horizontal surface heat insulating member 132, and grooves (or protrusions) in the width direction are formed at the upper and lower ends of the opposing surfaces of the vertical surface heat insulating members 134 . (Or protrusions) are formed along the front edge of the rear surface heat insulating member 136 and protrude along the rear edge of the horizontal surface heat insulating member 132 and the vertical surface heat insulating member 134 so as to be coupled to the groove Groove) may be formed. Here, the concavo-convex shape is exemplified by protrusions and grooves having a rectangular cross-sectional shape. However, the protrusions and grooves may be continuously formed on both sides of the protrusions and grooves, such as a mountain-shaped or right-triangular shape.

The second heat insulating part 140 is a heat insulating layer formed by a heat insulating paint (paint or the like) applied to the surface of the body 110 and the surface of the first heat insulating part 130, respectively.

The layer formed on the surface of the first adiabatic portion 130 of the second adiabatic portion 140 may be formed of the horizontal surface adiabatic member 132, the vertical surface adiabatic member 134, It is possible to prevent the occurrence of gaps in the connecting portion (surface) when the member 136 is connected, thereby doubling the heat insulating effect.

At this time, it is preferable that the thickness of the second heat insulating part 140 is 0.2 to 0.6 mm.

Hereinafter, various embodiments and comparative examples for clearly confirming the heat insulating effect of the air conditioner refrigerant box of the present invention will be described.

[Example 1]

In Example 1, an air conditioner refrigerant box specimen was sequentially prepared on the outer wall surface of the refrigerant box by an inner heat insulating paint, an inner galvanized steel sheet, a foamed polystyrene heat insulating material, an outer galvanized steel sheet and an outer heat insulating paint. As the paint, 1833-7170 insulating paint of paint company was used.

In other words, the test specimen has a thickness of 0.4 mm (on the constant temperature side) from the inside to the outside, a thickness of 0.4 mm on the inner zinc plated steel sheet, a thickness of 12.5 mm on the expanded polystyrene insulation, a thickness of 0.4 mm on the outer zinc plated steel sheet, The inner and outer heat insulating paints are the second heat insulating part 140 of the present invention. The foamed polystyrene heat insulating material and the inner and outer galvanized steel sheets are the same as the first heat insulating part 130 of the present invention. The expanded polystyrene layer 130a and the galvanized steel sheet 130b.

[Comparative Example 1]

Comparative Example 1 was carried out under the same conditions as in Example 1 except that the inner and outer heat insulating coatings were not applied at all, and the outer surface of the refrigerant box was coated with an air-conditioned refrigerant having an inner zinc plated steel sheet, a foamed polystyrene insulating material and an outer zinc- A box specimen was prepared.

[Comparative Example 2]

In Comparative Example 2, only the inner heat insulating paint was applied to a thickness of 0.4 mm between the outer wall surface of the refrigerant box and the inner zinc plated steel sheet, the outer zinc plated steel sheet was not coated with the heat insulating paint, The inner zinc plated steel sheet, the expanded polystyrene insulating material, and the outer zinc plated steel sheet were manufactured in the same condition as in Example 1, and the air conditioner refrigerant box specimen was manufactured.

[Comparative Example 3]

In Comparative Example 3, the inner heat insulating paint was not applied between the outer wall surface of the refrigerant box and the inner zinc plated steel sheet, the outer heat insulating paint was applied to only the outer zinc plated steel sheet to a thickness of 0.4 mm, The inner zinc plated steel sheet, the expanded polystyrene insulating material, and the outer zinc plated steel sheet were manufactured in the same condition as in Example 1, and the air conditioner refrigerant box specimen was manufactured.

[Comparative Examples 4 to 21]

As shown in the following Table 1, inner zinc plated steel sheet lamination thickness, expanded polystyrene thermal insulating material lamination thickness and outer zinc plated steel sheet lamination thickness were changed in Comparative Examples 1 to 3, respectively, and the rest were the same as those in Comparative Examples 1 to 3 Air conditioner refrigerant box specimens were manufactured.

A
(Unit: mm) B
(Unit: mm) C
(Unit: mm) D
(Unit: mm) E
(Unit: mm) Example 1 0.4 0.4 12.5 0.4 0.4 Comparative Example 1 0 0.4 12.5 0.4 0 Comparative Example 2 0.4 0.4 12.5 0.4 0 Comparative Example 3 0 0.4 12.5 0.4 0.4 Comparative Example 4 0 0.4 25 0.4 0 Comparative Example 5 0 0.4 37.5 0.4 0 Comparative Example 6 0.4 0.4 25 0.4 0 Comparative Example 7 0.4 0.4 37.5 0.4 0 Comparative Example 8 0 0.4 25 0.4 0.4 Comparative Example 9 0 0.4 37.5 0.4 0.4 Comparative Example 10 0 0.8 12.5 0.4 0 Comparative Example 11 0 1.2 12.5 0.4 0 Comparative Example 12 0.4 0.8 12.5 0.4 0 Comparative Example 13 0.4 1.2 12.5 0.4 0 Comparative Example 14 0 0.8 12.5 0.4 0.4 Comparative Example 15 0 1.2 12.5 0.4 0.4 Comparative Example 16 0 0.4 12.5 0.8 0 Comparative Example 17 0 0.4 12.5 1.2 0 Comparative Example 18 0.4 0.4 12.5 0.8 0 Comparative Example 19 0.4 0.4 12.5 1.2 0 Comparative Example 20 0 0.4 12.5 0.8 0.4 Comparative Example 21 0 0.4 12.5 1.2 0.4

(A: Inner side heat insulation layer thickness, B: Inner zinc plated steel sheet lamination thickness, C: Expanded polystyrene insulation layer thickness, D: Outside zinc plated steel sheet lamination thickness,

[Evaluation of heat conduction rate]

The heat conduction rates of the air conditioner refrigerant box specimen manufactured through Example 1 and Comparative Examples 1 to 21 were evaluated, and the results are shown in Table 2 below. The heat transfer rate test was carried out under the conditions of temperature (25.0 ± 5) ℃ and humidity (55 ± 10)% RH through the method of KS F 2277: 2002 (Method for measuring the insulation performance of building components).

[Impact strength evaluation]

The impact strength of the air conditioner refrigerant box specimen manufactured through Example 1 and Comparative Examples 1 to 21 was evaluated. The results are shown in Table 2 below. The impact strength was measured in accordance with ASTM D256, and the units were expressed in kJ / m < 2 > divided by the fracture area.

[Heat shrinkage rate evaluation]

The heat shrinkage rate of the air conditioner refrigerant box specimen manufactured through Example 1 and Comparative Examples 1 to 21 was evaluated. The results are shown in Table 2 below. The heat shrinkage rate was evaluated by measuring the shrinkage percentage (%) of the specimen under the condition that the specimen was allowed to stand at a temperature of minus 40 ° C for 24 hours.

[Evaluation of Thermal Expansion Rate]

The thermal expansion coefficients of the air conditioner refrigerant box specimen manufactured through Example 1 and Comparative Examples 1 to 21 were evaluated, and the results are shown in Table 2 below. The coefficient of thermal expansion was evaluated by measuring the length expansion rate (%) of the specimen under the condition that the specimen was allowed to stand at a temperature of 60 ° C for 24 hours.

Heat conduction rate Impact strength (kJ / m 2) Heat Shrinkage (%) Thermal Expansion Rate (%) Example 1 0.170 0.50 0.005 0.015 Comparative Example 1 0.312 0.33 0.022 0.034 Comparative Example 2 0.252 0.36 0.021 0.032 Comparative Example 3 0.222 0.38 0.021 0.031 Comparative Example 4 0.175 0.30 0.021 0.033 Comparative Example 5 0.173 0.36 0.022 0.034 Comparative Example 6 0.179 0.35 0.021 0.032 Comparative Example 7 0.172 0.37 0.021 0.031 Comparative Example 8 0.203 0.38 0.022 0.033 Comparative Example 9 0.198 0.40 0.021 0.031 Comparative Example 10 0.233 0.36 0.023 0.033 Comparative Example 11 0.235 0.37 0.022 0.033 Comparative Example 12 0.235 0.35 0.021 0.032 Comparative Example 13 0.201 0.36 0.021 0.031 Comparative Example 14 0.224 0.39 0.021 0.031 Comparative Example 15 0.216 0.40 0.021 0.031 Comparative Example 16 0.287 0.39 0.022 0.034 Comparative Example 17 0.251 0.41 0.023 0.035 Comparative Example 18 0.228 0.37 0.023 0.035 Comparative Example 19 0.201 0.39 0.024 0.036 Comparative Example 20 0.225 0.40 0.023 0.035 Comparative Example 21 0.224 0.41 0.024 0.035

As a result of testing the heat conduction rate of the air conditioner refrigerant box specimen of Example 1 and Comparative Examples 1 to 21, it can be confirmed that the heat conduction ratio (K) of Example 1 is 0.170 W / m < 2 > It can be confirmed that the heat conduction ratio is even better than those of Comparative Examples 4 to 9 in which the thickness of the heat insulator is made 2 to 3 times as thick.

The impact strength of the air conditioner refrigerant box specimen of Example 1 and Comparative Examples 1 to 21 was tested. The impact strength of Example 1 was 0.50 kJ / m 2, and the impact strength of Comparative Examples 17 and 21 was 0.41 kJ / It is understood that the impact strength is lower than that of Example 1 because the outer heat insulating paint is omitted.

As a result of examining the heat shrinkage ratios of the air conditioner refrigerant box specimens of Example 1 and Comparative Examples 1 to 21, it was found that the heat shrinkage rate of Example 1 was 0.005% and the heat shrinkage rate was the lowest in Comparative Examples 1 to 21 have.

Finally, the thermal expansion coefficient of the air conditioner refrigerant box test specimen of Example 1 and Comparative Examples 1 to 21 was tested. As a result, it was found that the coefficient of thermal expansion of Example 1 was 0.015% and the coefficient of thermal expansion was the lowest compared to Comparative Examples 1 to 21 .

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

100: air conditioner refrigerant box 110: body
112: installation space 114: support projection
120: cover 130:
132: horizontal plane thermal insulating member 134: vertical plane thermal insulating member
136: Rear heat insulating member 140: Second heat insulating part

Claims (4)

A body which is installed in a state of being embedded in a wall surface of a building and has a front surface formed with an opening and an installation space through which a refrigerant pipe passes;
A cover for opening and closing an opened front portion of the body;
A first heat insulating part closed on a rear surface and an outer surface of the body; And
And a second adiabatic part formed on the back surface and the outer wall surface of the body and on the surface of the first adiabatic part and forming a heat insulating layer by the adiabatic paint,
The first heat insulating part has an area corresponding to each of a bottom surface and an outer wall surface of the body, and then adheres each contact surface to attach to the bottom surface and the outer wall surface of the body. The horizontal heat insulating member, the vertical surface heat insulating member, Wherein the edge contact surfaces of the horizontal surface heat insulating member, the vertical surface heat insulating member, and the rear surface heat insulating member are connected in an uneven shape,
The layer formed on the surface of the first adiabatic portion of the second adiabatic portion may have a finishing surface on the bottom surface and the outer wall surface of the body so as to prevent a gap in the connection portion when the horizontal surface heat insulating member, the vertical surface heat insulating member, Wherein a layer is formed on the surfaces of the horizontal surface heat insulating member, the vertical surface heat insulating member and the rear surface insulating member by applying heat insulating paint.
delete The method according to claim 1,
Wherein the first heat insulating portion is a foamed polystyrene layer.
The method according to claim 1,
The first heat insulating portion is formed on at least one surface of both surfaces of the expanded polystyrene layer, Wherein the first and second cooling plates are closed with at least one steel plate.

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