Patent Publication Number: US-11027159-B2

Title: Water curtain head for preventing fire spread between floors in curtain wall building

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application is the National Stage filing under 35 U.S.C. 371 of International Application No. PCT/KR2016/012450, filed on Nov. 1, 2016, which claims the benefit of earlier filing date and right of priority to Korean Application No. 10-2016-0049601, filed on Apr. 22, 2016, the contents of which are all hereby incorporated by reference herein in their entirety. 
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present disclosure relates to a water curtain head and, more particularly, to a water curtain head applied to a curtain wall building. 
     2. Description of the Related Art 
     In curtain wall buildings, glass windows for securing a view and functioning as indoor lighting based on sunlight are installed on walls. 
     A curtain wall refers to a member in which a structure (frame) and a member (mainly, glass windows such as glass, stone, other finishing materials, etc.) constituting an outer elevation surface is separated like a curtain to cover a building. 
     Curtain wall types may be classified according to structural schemes as follows. A mullion type is a scheme in which vertical columns are exposed and sashes or spandrel panels are inserted therebetween. A panel scheme (or spandrel type) is a scheme configured by a combination of a panel emphasizing a horizontal line and an inner glass window. A sheathed type is a scheme in which a chassis is hidden in a panel so that a structure is not visible to the outside, and a grid type is a scheme of illustrating a vertical and horizontal grid appearance. 
     The curtain wall system has emerged as a main constituent, rather than a simple outer covering decoration of skyscrapers, but, in terms of structural characteristics of the curtain wall structure, a fire or smoke may be spread through a space between a glass window and the floor (pork-through phenomenon) or through a broken portion of a glass window (leaf-frog phenomenon), leading to a possibility that the fire is spread between floors. 
     SUMMARY OF THE INVENTION 
     The present disclosure is to solve the above-mentioned problems and other problems. 
     An object of the present disclosure is to provide a water curtain head having various spray directions to simultaneously spray water to glass windows and the inside of a building. 
     According to an aspect of the present disclosure, there is provided a water curtain head including: a head body connected to a water supply pipe installed inside a building and having a water releasing opening; and a deflector disposed to be adjacent to the water releasing opening to allow water discharged by the water releasing opening to pass therethrough, wherein the deflector includes a first spray nozzle formed on a front surface of the deflector to penetrate through the front surface; and a second spray nozzle depressed inwards from a side surface of the deflector by a predetermined section. 
     In an embodiment, the deflector may have a disk shape, the second spray nozzle may include a plurality of spray nozzles, and the plurality of spray nozzles may be formed in a circumferential direction of the disk. 
     In an embodiment, the plurality of spray nozzles may be formed only in a partial region of the circumference of the disk. 
     In an embodiment, a sloped portion may be formed on a rear surface of the deflector such that a thickness of the deflector is increased from the center toward the edge. 
     In an embodiment, the head body may include a first body and a second body formed in a direction perpendicular to the first body and having the water releasing opening. 
     In an embodiment, the head body may be provided in the frame, and the frame may have a bent portion formed on at least a portion to correspond to a shape of the first and second bodies. 
     In an embodiment, a stopper may be disposed on the opposite side of the water releasing opening of the second body, and the stopper may be coupled to the frame. 
     In an embodiment, a connection portion connected to the frame may be formed on a rear surface of the deflector. 
     The water curtain head may further include: a first cap connected to the deflector; a second cap disposed at the water releasing opening to close the water releasing opening; and a heat sensing portion configured to sense heat and disposed between the first and second caps. 
     According to another aspect of the present disclosure, there is provided a water curtain head including: a head body connected to a water supply pipe installed inside a building and having a water releasing opening; a deflector having a spray nozzle allowing water discharged by the water releasing opening to pass therethrough; a heat sensing portion disposed between the head body and the deflector; and a heat sensing hole covering the head body and having a heat sensing hole formed at a position corresponding to the spray nozzle. 
     In an embodiment, the cover may be coupled to a first fixing portion, and the cover may be coupled to the first fixing portion by a heat sensing alloy such that the cover is separated from the first fixing portion when the ambient temperature of the cover is equal to or higher than a predetermined temperature. 
     In an embodiment, a hook may be formed on at least one of the first and second fixing portions and a recess may be formed on the other to allow the hook to be hooked therein so that the first and second fixing portions are coupled to each other. 
     According to another aspect of the present disclosure, there is provided a curtain wall water curtain head system applied to a curtain wall building including: a curtain wall; and a water curtain head  installed to be adjacent to the curtain wall, wherein the front surface of the deflector faces the curtain wall such that water sprayed through the first spray nozzle is oriented toward the curtain wall. 
     In the water curtain head according to the present disclosure, since a first spray nozzle and a second spray nozzle are formed on a front surface and a side surface of the deflector, water may be spread forwards, sidewards (or downwards) from the deflector. 
     In addition, when the front surface of the deflector is installed to face the curtain wall, water may be simultaneously sprayed to the curtain wall and the inside of a building, significantly reducing the possibility that a fire spreads to a space between floors. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view of a water curtain head according to an embodiment of the present disclosure. 
         FIG. 2  is a side view of the water curtain head illustrated in  FIG. 1  viewed from the side. 
         FIGS. 3A and 3B  are views for explaining patterns of a first spray nozzle. 
         FIG. 4  is a perspective view of a water curtain head according to another embodiment of the present disclosure. 
         FIG. 5  is a cross-sectional view of a water curtain head according to another embodiment of the present disclosure. 
         FIGS. 6 to 7  are a perspective view and an exploded view of a water curtain head according to another embodiment of the present disclosure. 
         FIG. 8  is a conceptual view illustrating a state of an installed water curtain head according to another embodiment of the present disclosure. 
         FIGS. 9A, 9B, and 9C  are graphs illustrating sprinkling distributions of an E-flush head, a glass window sprinkler head, and a first glass curtain wall water curtain head may water head. 
         FIG. 10  is a conceptual view for explaining a gasoline combustion test. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     Hereinafter, the embodiments of the present invention will be described with reference to the accompanying drawings, in which like numbers refer to like elements throughout although the embodiments are different, and a description of the like elements a first embodiment will be used for those of the different embodiment. In the following description, usage of suffixes such as ‘module’, ‘part’ or ‘unit’ used for referring to elements is given merely to facilitate explanation of the present invention, without having any significant meaning by itself. In describing the present invention, if a detailed explanation for a related known function or construction is considered to unnecessarily divert the gist of the present invention, such explanation has been omitted but would be understood by those skilled in the art. The accompanying drawings of the present invention aim to facilitate understanding of the present invention and should not be construed as limited to the accompanying drawings. Also, the present invention is not limited to a specific disclosed form, but includes all modifications, equivalents, and substitutions without departing from the scope and spirit of the present invention. 
     It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. 
     It is to be understood that when one element is referred to as being “connected to” or “coupled to” another element, it may be connected directly to or coupled directly to another element or be connected to or coupled to another element, having the other element intervening therebetween. Meanwhile, it is to be understood that when one element is referred to as being “connected directly to” or “coupled directly to” another element, it may be connected to or coupled to another element without the other element intervening therebetween. 
     As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. 
     It will be further understood that the terms “comprises” “comprising,” “includes” and/or “including” when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. 
     Hereinafter, a water curtain head according to the present disclosure will be described with reference to the drawings. 
       FIG. 1  is a perspective view of a water curtain head according to an embodiment of the present disclosure, and  FIG. 2  is a side view of the water curtain head illustrated in  FIG. 1 .  FIGS. 3A and 3B  are views for explaining the patterns of a first spray nozzle. 
     Referring to  FIGS. 1 and 2 , a water curtain head  100  according to an embodiment of the present disclosure includes a head body  110  and a deflector  120 . The water curtain head  100  according to an embodiment may be an open type water curtain head. 
     A flow path through which water may move is formed in the head body  110 . The head body  110  is connected to a water supply pipe installed inside a building so that water may be supplied. In addition, the head body  110  includes a water releasing opening  110   a  to discharge supplied water. 
     The head body  110  may include first and second bodies  111  and  112 . The first and second bodies  111  and  112  may be disposed to be perpendicular to each other. The first and second bodies  111  and  112  may be integrally formed or may be separately formed and subsequently joined together by welding, or the like. Here, the first body  111  may be formed in a vertical shape, and the second body  112  may be formed in a horizontal shape. 
     Here, a water supply pipe may be connected to one side of the first body  111 , and the water releasing opening  110   a  may be formed at one side of the second body  112 . According to such a structure, a flow path may be formed from the water supply pipe side to the water releasing opening  110   a  side in the head body  110 . 
     The deflector  120  is configured to spread water discharged from the water releasing opening  110   a  of the head body  110  in all directions. 
     That is, the deflector  120  may be disposed adjacent to the water releasing opening  110   a  to allow water discharged from the water releasing opening  110   a  to pass therethrough. Specifically, one surface of the deflector  120  may be disposed to face the water releasing opening  110   a.    
     The deflector  120  may include a front surface  121 , a rear surface  122 , and a side surface  123  connecting the front surface and the rear surface. The deflector  120  may include first and second spray nozzles  130  and  140  formed on the front and side surfaces  121  and  123 , respectively. 
     The first spray nozzle  130  penetrates through the front surface  121  of the deflector  120 . 
     Referring to  FIG. 1 , the first spray nozzle  130  may include a plurality of spray nozzles. The plurality of spray nozzles may be arranged in a specific pattern. 
     For example, referring to  FIG. 1 , any one spray nozzle  131  may be formed at the center of a front surface  121  of the deflector  120 , and the other remaining spray nozzles  132  may be arranged in a circular shape adjacent to the any one spray nozzle  131 . 
     Referring to  FIG. 3A , the plurality of spray nozzles  130   a  forming first spray nozzles may be arranged in a row in one direction. Referring to  FIG. 3B , the spray nozzles  130   b  forming first spray nozzles may be arranged in a rectangular shape. 
     Meanwhile, the second spray nozzle  140  may be formed to be depressed inwards from the side surface at a predetermined interval. In addition, the second spray nozzle  140  may be connected to the front and rear surfaces  121  and  123  as well as the side surface. 
     The second spray nozzle  140  may include a plurality of spray nozzles. 
     For example, in the case of the disk-shaped deflector  120 , the plurality of spray nozzles  140  may be formed in a circumferential direction of the disk. The plurality of spray nozzles may be spaced apart from each other by a predetermined distance. 
     Furthermore, the plurality of spray nozzles  140  may be formed only in a portion of the circumference of the disk. In other words, the plurality of spray nozzles may not be formed wholly at the edge of the disk but may be formed only at a portion of the edge of the disk. 
     In this case, the portion where the plurality of spray nozzles  140  are formed may include a half or more of the circumference of the disk. In other words, the portion may be a portion corresponding to a straight angle or greater of the circumference of the disk. 
     According to the structure, water passing through the second spray nozzle  140  may be spread to a lower side and a lateral side of the deflector  120 . Also, water passing through the first spray nozzle  130  may be spread to a front side of the deflector  120 . 
     In case where a glass window is disposed in front of the deflector  120 , water passing through the first spray nozzle  130  generally moves to the glass window and water passing through the second spray nozzle  120  may be spread to the inside of the building. That is, the water curtain head  100  according to the present disclosure may simultaneously spray water to the glass window and the inside of the building through the first and second spray nozzles  130  and  140 . 
     Meanwhile, referring to  FIG. 2 , a sloped portion  122   a  increased from the center toward the edge may be formed on a lower portion of a rear surface of the deflector  120 . The sloped portion  122   a  may be formed on a lower the rear surface of the deflector  120 . According to this structure, water flowing along the rear surface may be spread to the rear side of the deflector  120 . 
     Hereinafter, a water curtain head according to another embodiment of the present disclosure will be described with reference to  FIGS. 4 and 5 . FIG. Here, another embodiment may be a closed type water curtain head. 
       FIG. 4  is a perspective view of a water curtain head according to another embodiment of the present disclosure, and  FIG. 5  is a cross-sectional view of a water curtain head according to another embodiment of the present disclosure. 
     The water curtain head  200  according to another embodiment of the present disclosure may include a frame  250 , a head body  210 , and a deflector  220 . 
     The head body  210  and the deflector  220  are the same as those described above, and here, a frame  250  will be described. 
     The frame  250  is formed to cover the head body  210 . That is, the head body  210  may be provided inside the frame  250 . 
     The frame  250  may include a bent portion  251  in at least a portion to correspond to an arrangement shape of the first and second bodies  211  and  212  constituting the head body  210 . In other words, when the first body  211  is formed in a vertical direction and the second body  212  is formed in a horizontal direction, the bent portion  251  may have a bent shape at an approximately right angle. 
     Meanwhile, the deflector  220  may be connected to the frame  250 . Specifically, a connection portion  260  connected to the frame  250  may be formed on a rear surface of the deflector  220 . 
     The connecting portion  260  may be formed on an area of the rear surface of the deflector  220  where the second spray nozzle  240  is not formed. If the second spray nozzle  240  is formed at a lower portion of the rear surface of the deflector  220 , the connecting portion  260  may be formed at an upper portion of the rear surface of the deflector  220 . Also, the deflector  220  and the connecting portion  260  may be integrally formed. 
     Meanwhile, the length of the connecting portion  260  may be determined based on a distance between the deflector  220  and the spray nozzle. 
     Referring to  FIG. 5 , a stopper  270  is disposed on the opposite side of the water releasing opening of the second body  212 . The stopper  270  may be coupled to the frame  250 . A packing member  271  may be disposed between the second body  212  and the stopper  270 . 
     Referring to  FIGS. 4 and 5 , the water curtain head according to another embodiment of the present disclosure may include a heat sensing portion  280  and first and second caps  281  and  282 . 
     The first cap  281  is connected to the deflector  220 . More specifically, the first cap  281  may be disposed on a rear surface of the deflector  220 , and at least a portion thereof may penetrate through the deflector  220 . In other words, the first cap  281  may be inserted into a recess formed in the deflector  220  so as to be fixed to the deflector  220 . 
     The second cap  282  may be disposed in the water releasing opening to close a water releasing opening  210   a . More specifically, the second cap  282  may include a first portion  282   a  depressed to an inner side the water releasing opening  210   a  and a second portion  282   b  packing the water releasing opening around an outlet of the water releasing opening. The first and second portions  282   a  and  282   b  may be integrally formed. Also, the second portion  282   b  may be configured to intersect at least a portion of the first portion  282   a . Meanwhile, the second cap  282  may be formed of a brass material. 
     The heat sensing portion  280  is configured to sense heat. The heat sensing portion  280  may include a metal heat sensing element or a specific liquid. The heat sensing portion  280  may be configured to be broken when an ambient temperature Is not within a predetermined range. 
     The heat sensing portion  280  may be disposed between the first and second caps  281  and  282 . That is, one side of the heat sensing portion  280  may be in contact with the first cap  281  and the other side may be in contact with the second cap  282 . Accordingly, the heat sensing portion  280  may be configured to press the first and second caps  281  and  282 . 
     Referring to an operation of the heat sensing portion  280 , when the ambient temperature is not within the predetermined range, the heat sensing portion  280  is broken to release pressure applied to the first and second caps  281  and  282 . Accordingly, the first and second caps  281  and  282  may be separated from the deflector  220  and the water releasing opening  210   a , respectively. Accordingly, water discharged from the water releasing opening  210   a  may be spread in all directions through the deflector  220 . 
       FIGS. 6 to 7  are a perspective view and an exploded view of a water curtain head according to another embodiment of the present disclosure.  FIG. 8  is a conceptual view illustrating a state in which a water curtain head is installed according to another embodiment of the present disclosure. 
     Referring to  FIGS. 6 and 7 , a water curtain head  300  according to another embodiment of the present disclosure may include a head body  210 , a deflector  220 , a heat sensing portion  280 , and a cover  310 . 
     The head body  210 , the deflector  220 , and the heat sensing portion  280  have already been described above, and thus, a description thereof will be omitted. 
     The cover  310  is configured to cover the head body  210 . When the head body  210  is present inside the frame, the cover  310  may be configured to cover the frame. The cover  310  may have a hexahedral shape in which one side thereof is open. That is, components such as the head body  21 , 0  and the like, may be accommodated in the cover  310  through the open side. In addition, a wing portion  311  extends from one surface of the cover  310 . The wing portion  311  may serve as an attachment portion when the cover  310  is attached to a ceiling, or the like. 
     The cover  310  may have a heat sensing hole at a position corresponding to the spray nozzle formed in the deflector  220 . In other words, the cover  310  may include first and second heat sensing holes  330  and  340 . 
     The first and second heat sensing holes  330  and  340  may be formed on front and lower surfaces  312  and  313  of the cover  310 . In addition, although not shown, a heat sensing hole may be formed on the left and right sides of the cover  310 . 
     Referring to  FIGS. 6 and 7 , the water curtain head  300  according to the present embodiment may include first and second fixing portions  320  and  330 . 
     The first fixing portion  320  may be coupled to the cover  310 . More specifically, the first fixing portion  320  has an auxiliary wing portion  321 . The auxiliary wing portion  321  may be in surface contact with the wing portion  311  of the cover  310 . The first fixing portion  320  and the cover  310  may be coupled with each other as the auxiliary wing portion  321  and the wing portion  311  are coupled with each other. Meanwhile, the auxiliary wing portion  321  and the wing portion  311  may be adhered to each other by an adhesive member or may be coupled to each other through a separate fastening member. 
     The cover  310  may be coupled to the first fixing portion  320  by a heat sensing alloy such that the cover  310  is separated from the first fixing portion  320  when an ambient temperature is equal to or higher than a predetermined temperature. 
     Here, the predetermined temperature may be a temperature corresponding to heat sensed by the heat sensing alloy. 
     In other words, when the ambient temperature is equal to or higher than the predetermined temperature, the cover  310  may be first released and the heat sensing portion  280  may burst secondarily, resulting in final spraying. 
     Meanwhile, the first fixing portion  320  may have a first opening portion  322  through which the first body  211  may pass. 
     The second fixing portion  330  is configured to be coupled with the first fixing portion  320 . Specifically, a hook  323  may be formed in the first fixing portion  320 , and a recess  333  may be formed in the second fixing portion  330 . The first and second fixing portions  320  and  330  may be coupled to each other as the hook  323  caught in the recess  323 . 
     The second fixing portion  330  includes a second opening  332  through which the first body  211  may pass. 
     An open area of the second opening  332  may be narrower than the area of the first opening portion  322 . The second opening  322  may have a shape and size corresponding to a cross-sectional area of the first body  211  to fix the first body  211 . 
     Referring to  FIG. 8 , the water curtain head  300  according to the present disclosure is mounted on a ceiling C adjacent to the glass window W such that a front surface of the cover  310  (more specifically, the deflector) faces the glass window. 
     In  FIG. 8 , it is illustrated that water discharged from the first heat sensing hole  330  is spread to the glass window W and water emitted from the second heat sensing hole  340  is spread to the inside of the building, but the present disclosure is not limited thereto. That is, as described above, when the ambient temperature exceeds a predetermined temperature, the cover is disengaged, and water discharged from the first and second spray nozzles of the deflector may be spread to the glass windows and the inside of the building. 
     Up to now, the structure of the water curtain head related to the present disclosure has been described. Hereinafter, the effect of the water curtain head related to the present disclosure will be examined through testing of measuring a wall surface (glass window) sprinkling distribution and an interior (building interior) sprinkling amount. 
     In order to perform testing of measuring the wall surface sprinkling distribution and the interior sprinkling amount, a water curtain head was installed to be spaced apart from the wall surface by about 15 cm and a sprinkling amount of the wall surface and a collected amount of a water collecting container installed on an inner side were measured. 
     As testing conditions, a water discharge pressure was set to 0.1 MPa, a head mounting height was 1.2 m from the water collecting container, and a measurement time was 1 minute. 
     The results of the sprinkling distribution test are illustrated in Table 1 below. 
     
       
         
           
               
               
               
               
               
             
               
                   
                 TABLE 1 
               
               
                   
                   
               
               
                   
                   
                   
                 First glass 
                 Second glass 
               
               
                   
                   
                 Window 
                 curtain wall 
                 curtain wall 
               
               
                   
                   
                 sprinkler 
                 water curtain 
                 water curtain 
               
               
                   
                 E-flush head 
                 head 
                 head 
                 head 
               
               
                   
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
            
               
                 Flow rate 
                 K80 
                 K80 
                 K50 
                 K50 
               
               
                 coefficient K) 
               
               
                 Wall surface 
                 — 
                 2.8 
                 2.2 
                 2/2 
               
               
                 sprinkling 
               
               
                 distance 
               
               
                 Wall surface 
                 26 
                 15 
                 20 
                 14.5 
               
               
                 attainable water 
               
               
                 amount 
               
               
                 Inner attainable 
                 37.1 
                 1.25 
                 17.4 
                 20.7 
               
               
                 water amount 
               
               
                 Ratio of inner 
                 3:4 
                 12:1 
                 8:7 
                 2:3 
               
               
                 side attainable 
               
               
                 water amount to 
               
               
                 wall surface 
               
               
                 attainable water 
               
               
                   
               
            
           
         
       
     
     Referring to Table 1 above, E-flush head and window sprinkler head are related arts, and first and second glass curtain wall water curtain heads are water curtain heads according to various embodiments of the present disclosure. 
       FIGS. 9A, 9B, and 9C  are graphs illustrating sprinkling distributions of the E-flush head, the window sprinkler head, and the first glass curtain wall water curtain head. The height of each bar graph may refer to the volume of water (ml) filling each water collecting container. Further, a glass surface is provided parallel to a horizontal axis, and thus, a vertical axis may refer to a distance d from the glass surface. 
     Referring to  FIG. 9A , it can be seen that sprinkling was performed to reach the #5 water collecting container, about 1.5 m away from the glass surface, but the distribution was irregular and the sprinkling radius in the direction of the glass surface was very small. 
     Referring to  FIG. 9B , it can be seen that inner side sprinkling was rarely performed, but the spraying radius was very large in the direction of the glass surface. 
     Referring to  FIG. 9C , it can be seen that inner sprinkling and sprinkling in the direction of the glass surface are performed evenly. It can be seen that a wall surface water discharge amount was about 20,300 ml, a building interior water discharge amount was 22,785 ml, and an effective/maximum sprinkling range was 2.2 m. 
     Hereinafter, results of a gasoline combustion test will be described. 
     In the gasoline combustion test, a temperature difference is shown when each head is sprinkled after 1 minute of combustion using 1 MW gasoline flame. A state in 120 seconds after sprinkling and a state in 280 seconds after sprinkling, which exhibited a sufficient cooling effect by head sprinkling, were compared. Meanwhile, each measurement position is a point on the curtain will frame and the glass surface illustrated in  FIG. 10 . 
     
       
         
           
               
               
               
               
             
               
                   
                 TABLE 2 
               
             
            
               
                   
                   
               
               
                   
                   
                 Window 
                 Glass curtain wall water 
               
               
                   
                 E-flush head 
                 sprinkler head 
                 curtain head 
               
            
           
           
               
               
               
               
               
               
               
            
               
                   
                 Temperature 
                 Temperature 
                 Temperature 
                 Temperature 
                 Temperature 
                 Temperature 
               
               
                   
                 120 seconds 
                 480 seconds 
                 120 seconds 
                 480 seconds 
                 120 seconds 
                 480 seconds 
               
               
                   
                 after 
                 after 
                 after 
                 after 
                 after 
                 after 
               
               
                 Measurement 
                 sprinkling 
                 sprinkling 
                 sprinkling 
                 sprinkling 
                 sprinkling 
                 sprinkling 
               
               
                 position 
                 (° C.) 
                 (° C.) 
                 (° C.) 
                 (° C.) 
                 (° C.) 
                 (° C.) 
               
               
                   
               
               
                 Curtain wall 
                 60 
                 77 
                 59 
                 68 
                 44 
                 47 
               
               
                 internal 
               
               
                 upper right 
               
               
                 side AL 
               
               
                 frame 
               
               
                 (CH.1) 
               
               
                 Curtain wall 
                 56 
                 65 
                 32 
                 26 
                 41 
                 55 
               
               
                 internal 
               
               
                 upper right 
               
               
                 side glass 
               
               
                 surface 
               
               
                 (CH.5) 
               
               
                 Curtain wall 
                 42 
                 42 
                 29 
                 36 
                 44 
                 48 
               
               
                 internal 
               
               
                 upper left 
               
               
                 side AL 
               
               
                 frame 
               
               
                 (CH.2) 
               
               
                 Curtain wall 
                 33 
                 34 
                 17 
                 21 
                 44 
                 54 
               
               
                 internal 
               
               
                 upper left 
               
               
                 side glass 
               
               
                 surface 
               
               
                 (CH.6) 
               
               
                 Curtain wall 
                 44 
                 48 
                 36 
                 43 
                 45 
                 47 
               
               
                 internal 
               
               
                 central right 
               
               
                 side AL 
               
               
                 frame 
               
               
                 (CH.3) 
               
               
                 Curtain wall 
                 43 
                 45 
                 11 
                 31 
                 39 
                 44 
               
               
                 internal 
               
               
                 central right 
               
               
                 side glass 
               
               
                 surface 
               
               
                 (CH.7) 
               
               
                 Curtain wall 
                 39 
                 39 
                 37 
                 42 
                 35 
                 40 
               
               
                 internal 
               
               
                 central left 
               
               
                 side AL 
               
               
                 frame 
               
               
                 (CH.4) 
               
               
                 Curtain wall 
                 37 
                 41 
                 41 
                 56 
                 40 
                 57 
               
               
                 internal 
               
               
                 central left 
               
               
                 side glass 
               
               
                 surface 
               
               
                 (CH.8) 
               
               
                   
               
            
           
         
       
     
     Referring to Table 2 above, it can be seen that a surface temperature cooling effect and a temperature control effect are obtained in the glass curtain wall water curtain head according to the present disclosure. 
     The present invention described above may be implemented as a computer-readable code in a medium in which a program is recorded. The computer-readable medium includes any type of recording device in which data that can be read by a computer system is stored. The computer-readable medium may be, for example, a hard disk drive (HDD), a solid state disk (SSD), a silicon disk drive (SDD), a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like. The computer-readable medium also includes implementations in the form of carrier waves (e.g., transmission via the Internet). Also, the computer may include the controller  180  of the terminal. Thus, the foregoing detailed description should not be interpreted limitedly in every aspect and should be considered to be illustrative. The scope of the present invention should be determined by reasonable interpretations of the attached claims and every modification within the equivalent range are included in the scope of the present invention.