WO2007043720A1

WO2007043720A1 - Division line for water sparingly of cold water and warm water

Info

Publication number: WO2007043720A1
Application number: PCT/KR2005/003396
Authority: WO
Inventors: Sang-Ki Lee
Original assignee: Sang-Ki Lee
Priority date: 2005-10-11
Filing date: 2005-10-12
Publication date: 2007-04-19
Also published as: KR100558676B1

Abstract

A distribution line for saving cold and hot water is disclosed. The distribution line is connected to a distributor and a water valve box, and includes a guide pipe having one end fixed to a distributor panel of the distributor by screwing opposite ends of an omega-shaped fixture in close contact with the one end using screws or nails, and another end fitted into a distributing hole formed in a side panel, and a cold water pipe, a hot water pipe, and a steam pipe which are inserted into the guide pipe, wherein the cold water pipe has one end connected to at least one unit cold water adjustment valve of a cold water distributor using at least one sealing nut, and another end connected to a first coupling in the water valve box; the hot water pipe has one end connected to at least one unit hot water adjustment valve of a hot water distributor using at least one sealing nut, and another end connected to a second coupling in the water valve box; and the steam pipe has one end fitted into a steam injection connector coupled to a cover of the water valve box, and another end coupled with a steam outlet and hooked on an upper end of the guide pipe. Thereby, the quantity of pipes is reduced, thus shortening the working time and reducing expenses. The quantity of water wasted by excessive water pressure when using cold and hot water is reduced, thus conserving water resources. When water collected in the guide pipe due to dew concentration is frozen therein, the frozen water is rapidly melted, thus preventing the distribution line from being damaged by such freezing.

Description

DIVISION LINE FOR WATER SPARINGLY OF COLD WATER

AND WARM WATER

Technical Field

[1] The present invention relates, in general, to a distribution line for saving cold and hot water, in which the cold and hot water flowing through a distributor are supplied to a water valve box via cold and hot water pipes inserted in a guide pipe, thereby reducing the number of installed pipes to make work easy and reduce expenses, and decreasing the quantity of water wasted by excessive water pressure when using the cold and hot water, and which a steam pipe is inserted in the guide pipe together with the cold and hot water pipes, thereby preventing ruptures caused by the freezing of water that collects in the guide pipe due to dew concentration, and supplying high- temperature steam to the steam pipe during freezing temperatures to rapidly thaw the frozen water. Background Art

[2] Generally, when a residence space such as a house, an apartment, a live/work studio, a hotel, etc. is newly built or extended, cold and hot water pipes introduced from the outside are guided to a distributor installed underneath a kitchen sink or in a built-in closet, dressing room, or the like. The guided cold and hot water is sent to water consumption areas, such as a rest room or bathroom, a boiler room, a multipurpose room, a laundry room, a kitchen, etc. such that it can be used in the water consumption areas.

[3] Here, the cold and hot water pipes guided from the distributor to each water consumption area have a double pipe structure in which a soft cold or hot water pipe is fitted in a corrugated protecting pipe. The cold and hot water pipes having this structure run to the restroom or bathroom, the laundry room, and the multipurpose room via a bedroom or living room floor and a kitchen floor, and are connected with connecting pipes of a wall-embedded water valve box installed in each water consumption area. Thereby, the cold or hot water is supplied through a cold or hot water line to a bathtub, a sink, a toilet, a laundry room, and so on.

[4] In the existing wall-embedded system, interconnection between the water valve boxes is impossible. Hence, when piping is installed, the cold and hot water pipes must be connected using each wall-embedded water valve box. As a result, there are various problems with piping work and piping structure, and renovation after piping work is not easy.

[5] Further, the cold and hot water pipes having a diameter from about 12 mm to about 15 mm supply the cold and hot water through discrete cold and hot water supplies under a fixed water pressure. Hence, when the cold and hot water are separately used in the water consumption area such as the restroom or bathroom, the boiler room, the multipurpose room, the laundry room, the kitchen, and so on, a large quantity of water flows to a drain when a faucet is not closed, and thus water resources are wasted. Furthermore, when cold water and the hot water are simultaneously used, the water pressure drops sharply, and thus the flow rate of the cold or hot water running out of the faucets is reduced, thus being inconvenient to use.

[6] Further, because the cold and hot water pipes are constructed to supply the cold and hot water by means of discrete cold and hot water supplies, when cold water remains in the cold water pipe for a long time during winter without the cold water faucet being opened, the cold water pipe is broken.

[7] In addition, when water is collected in the protecting pipe due to dew condensation generated on the surface of the cold water pipe, and then freezes, the water expands and thus the protecting pipe and the cold water pipe therein both break.

[8] In the process of constructing the cold and hot water pipes to supply the cold and hot water through the discrete cold and hot water supplies, a lot of materials, a high labor cost, and a long working time are required, and thus the construction cost is high. Moreover, when the cold and/or hot water pipes become leaky after being constructed, a main valve installed at a water meter must be closed before repair work can be carried out. Hence, all water consumption areas, such as the restroom or bathroom, the boiler room, the multipurpose room, the laundry room, the kitchen, and so on, cannot use the cold and/or hot water. Disclosure of Invention

Technical Problem

[9] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a distribution line for saving cold and hot water, in which the cold and hot water flowing through a distributor are supplied to a water valve box via cold and hot water pipes inserted in a guide pipe, thereby reducing the number of installed pipes to make work easy, reducing the working time to save expenses, decreasing the quantity of water wasted by excessive water pressure when using the cold and hot water, preventing the guide pipe and the cold and hot water pipes inserted in the guide pipe from being damaged when water that has collected in the guide pipe due to dew concentration freezes, rapidly thawing the frozen water, and enabling repair and replacement work to be readily formed in a state in which only a valve corresponding to a leaking portion need be closed. Technical Solution

[10] In order to accomplish the above object(s), the present invention provides a distribution line for saving cold and hot water and connected to a distributor 2 and a water valve box 3. The distribution line includes: a guide pipe 11 having one end fixed to a distributor panel 24 of the distributor 2 by screwing opposite ends of an omega-shaped fixture 26 in closely contact with the one end using screws or nails 261, and another end fitted into a distributing hole 311 formed in a side panel 35; and a cold water pipe 12, a hot water pipe 13, and a steam pipe 14 which are inserted into the guide pipe 11, wherein the cold water pipe 12 has one end connected to at least one unit cold water adjustment valve 223 of a cold water distributor 22 using at least one sealing nut 224, and another end connected to a first coupling 36 in the water valve box 3; the hot water pipe 13 has one end connected to at least one unit hot water adjustment valve 233 of a hot water distributor 23 using at least one sealing nut 234, and another end connected to a second coupling 37 in the water valve box 3; and the steam pipe 14 has one end fitted into a steam injection connector 4 coupled to a cover 33 of the water valve box 3, and another end coupled with a steam outlet 5 and hooked on an upper end of the guide pipe 11.

[11] Further, the steam injection connector 4 may include: a stepped extension 42 integrally formed at the center of a connector body 41; a stepped through hole 43 formed at the axial center where the connector body 41 and the stepped extension 42 are connected; a clamping step 44 formed around the stepped extension 42; a fixing recess 45 formed on an inlet-side inner circumference of the through hole 43; a seal 46 inserted on an outlet side of the through hole 43; a plurality of screw holes 441 formed at the connector body 41 that is connected to the cover 33 having a cover hole 331 by means of screws 47; and a steam injection cap 48 formed on one side thereof with a fixed step 481 inserted into the fixing recess 45, and integrally formed on another side thereof with a grip 482.

[12] Further, the steam outlet 5 may include: an annular outlet body 51 press-fitted into an end of the steam pipe 14; a body clip 52 extending downward from an outer circumference of an upper end of the outlet body 51 ; and a steam outlet cap 54 formed with a flexible band 53 on the outer circumference of the upper end of the outlet body 51, and integrally formed therein with a guide 56 having a sealing recess 55.

Advantageous Effects

[13] According to the present invention, the cold and hot water flowing through a distributor are supplied to the water valve box via the cold and hot water pipes inserted in the guide pipe, thus reducing the number of installed pipes and reducing the working time in order to save expenses. [14] Further, the quantity of water wasted by excessive water pressure when using the cold and hot water can be decreased. Furthermore, when water collected in the guide pipe due to dew concentration is frozen, the swelling of the water is mitigated somewhat, which thus can prevent the guide pipe from rupturing. In addition, when the collected water is frozen, high-temperature steam is supplied through the steam pipe, thereby rapidly thawing the frozen water. [15] In addition, repair and replacement work can be performed in a state where only a valve corresponding to a leaking portion is closed.

Brief Description of the Drawings [16] FIG. 1 is a cross-sectional view illustrating a distribution line for saving cold and hot water according to the present invention; [17] FIG. 2 is a perspective view illustrating a steam pipe of a distribution line for saving cold and hot water according to the present invention; and [18] FIG. 3 is an exploded perspective view illustrating a steam injection connector connected to a steam pipe of a distribution line for saving cold and hot water according to the present invention; [19] FIG. 4 is a perspective view illustrating a steam outlet connected to a steam pipe of a distribution line for saving cold and hot water according to the present invention; [20] FIG. 5 is a magnified longitudinal sectional view illustrating a steam injection connector connected to a steam pipe of a distribution line for saving cold and hot water according to the present invention; [21] FIG. 6 is a magnified longitudinal sectional view illustrating a steam outlet connected to a steam pipe of a distribution line for saving cold and hot water according to the present invention; [22] FIG. 7 is a magnified front view illustrating a distributor in a distribution line for saving cold and hot water according to the present invention; and [23] FIG. 8 is a longitudinal sectional view illustrating a distribution line for saving cold and hot water according to the present invention.

Best Mode for Carrying Out the Invention [24] Reference should now be made to the drawings, in which the same reference numerals are used throughout the different drawings to designate the same or similar components. [25] As illustrated in FIGS. 1, 2 and 3, a distribution line 1 for saving cold and hot water according to the present invention is composed of a distributor 2 and a water valve box

3. [26] Here, the distribution line 1 is adapted to deliver the cold and hot water to the water valve box 3 embedded in the wall of a restroom or bathroom, a boiler room, a mul- tipurpose room, a laundry room, a kitchen, or the like, facilitate work such as construction, testing, replacement, and so on, prevent water collected due to dew condensation from freezing and thus rupturing the distribution line 1, and easily thawing the frozen water with hot-temperature steam before a rupture occurs when the collected water is frozen.

[27] To this end, the distribution line 1 includes a guide pipe 11 connected from the outlet side of the distributor 2 installed on the wall of the boiler room to the water valve box 3 embedded in the wall of the water consumption area, such as the restroom or bathroom, and so on.

[28] Further, the guide pipe 11 is inserted thereinto by means of three pipes: a hot water pipe 13 that has a small diameter, and is connected to a unit hot water adjustment valve 233 by means of a sealing nut 234; a cold water pipe 12 that has a small diameter and is connected to a unit cold water adjustment valve 223 by means of a sealing nut 224; and a steam pipe 14 that is interposed between the cold and hot water pipes 13 and 12, particularly in the space between the inner circumference of the guide pipe 11 and the outer circumferences of the hot and cold water pipes 13 and 12, and has a predetermined diameter.

[29] The guide pipe 11, the hot water pipe 13, the cold water pipe 12, and the steam pipe

14 are preferably formed of a synthetic resin. More preferably, the guide pipe 11 is formed of a rigid synthetic resin, and the hot water pipe 13, the cold water pipe 12, and the steam pipe 14 are formed of a semi-rigid synthetic resin.

[30] Further, an inner diameter D of the guide pipe 11 is two to two-and-half times as large as outer diameters d' and d of the hot and cold water pipes 13 and 12. The inner diameter of the guide pipe 11 has a range from about 13 mm to about 17 mm, and the outer diameters of the hot and cold water pipes 13 and 12 have a range from about 6 mm to about 8 mm.

[31] When water is collected in the space between the inner circumference of the guide pipe 11 and the outer circumferences of the hot and cold water pipes 13 and 12 and steam pipe 14 due to dew concentration, the water collected due to the low temperature freezes and expands. When this happens, the frozen water expands toward the center of the steam pipe 14 rather than in a direction that causes the inner circumference of the guide pipe 11 to swell, because the inside of the steam pipe 14 is empty, thereby preventing direct rupture caused by the freezing. Further, high-temperature steam is supplied into the steam pipe 14 when freezing occurs, thereby interrupting freezing and thawing the frozen water.

[32] The steam pipe 14 having this function and a predetermined diameter is constructed such that the high-temperature steam generated by a steam generator (not shown) flows from one side thereof to the other side, thereby heating the surroundings and thawing the frozen water.

[33] To this end, the steam pipe 14 is constructed such that one end thereof is fitted into a steam injection connector 4 connected to a cover 33 of the water valve box 3 after being inserted into the guide pipe 11, and such that the other end thereof is connected with a steam outlet 5 and hooked on an upper end of the guide pipe 11.

[34] The steam injection connector 4 is adapted to allow the inlet side of the steam pipe

14 to be easily connected when installed, prevent external foreign material from being introduced into the steam pipe 14 at normal times after installation, and open a steam injection cap 48 to allow an outlet of the steam generator to be closely contacted or connected in an airtight state when thawing the frozen water.

[35] For this purpose, the steam injection connector 4 is constructed such that a stepped extension 42 is integrally formed at the center of a connector body 41, and such that a stepped through hole 43 is formed at the axial center where the connector body 41 is connected to the stepped extension 42.

[36] Further, the stepped extension 42 is formed with a clamping step 44 therearound, and thus one end of the steam pipe 14 is easily inserted and clamped in an airtight state. A fixing recess 45 is formed on the inlet-side inner circumference of the through hole 43, and is connected with a fixed step 481 of the steam injection cap 48 to be described below.

[37] Further, a seal 46 is inserted at a portion where the diameter of the through hole 43 communicating with the fixing recess 45 changes drastically, i.e. on an outlet side of the through hole 43, and thus the outlet of the steam generator, which is not shown, is closely contacted in an airtight state.

[38] Also, the connector body 41 is formed with a plurality of screw holes 441, and is connected to the cover 33 having a cover hole 331 by means of screws 47. The steam injection cap 48 is formed with the fixed step 481 inserted into the fixing recess 45 on one side thereof, and is integrally formed with a grip 482 on the other side.

[39] When the steam outlet 5 is used to thaw the frozen water, it causes the steam flowing through the steam pipe 14 to be discharged to the outside, and prevents external foreign materials from being introduced into the steam pipe 14 at normal times.

[40] To this end, the steam outlet 5 presses an outlet body 51 having a ring shape into the end of the steam pipe 14 when it is used, while a steam outlet cap 54 is pressed into the end of the steam pipe 14 when not used.

[41] Further, the outlet body 51 is formed with a body clip 52 extending downward from an outer circumference of an upper end thereof, and thus the body clip 52 is hooked on an upper end of the guide pipe 11 fixed to a distributor panel 24 by means of a fixture 26. Thereby, the end of the steam pipe 14 can be prevented from entering into the guide pipe 11.

[42] In addition, the outlet body 51 having the body clip 52 is integrally formed with a flexible band 53 connected with the steam outlet cap 54 on the outer circumference of the upper end thereof, thereby preventing the loss of the steam outlet cap 54. The steam outlet cap 54 is integrally formed therein with a guide 56, around which the end of the steam pipe 14 is fitted, wherein the guide 56 is provided with a sealing recess 55.

[43] The distributor 2 is installed to the distributor panel 24 such that it allows cold water to be directly supplied from one side thereof, and is then distributed at the flow rate requested by each water consumption area, allows hot water heated by a boiler (not shown) to be supplied from one side thereof and then distributed to each water consumption area, adjusts the flow of the cold and hot water to provide sufficient cold or hot water for use, and individually tests and repairs the water consumption areas.

[44]

[45] *To this end, the distributor 2 has a cold water distributor 22 and a hot water distributor 23 screwed to each other on opposite sides of a switching valve 21, as illustrated in FIGS. 7 and 8.

[46] The cold water distributor 22 has a cold water supply pipe 222 connected on one side of a cold water shutoff valve 221, and one or more unit cold water adjustment valves 223 connected with one or more cold water pipes 12 by means of one or more sealing nuts 224 respectively on the other side of the cold water shutoff valve 221, thereby allowing cold water to be sufficiently supplied to each water consumption area.

[47] The hot water distributor 23 has the same structure as the cold water distributor 22.

The hot water distributor 23 has a hot water supply pipe 232 screwed on one side of a hot water shutoff valve 231, and one or more unit hot water adjustment valves 233 connected with one or more hot water pipes 12 by means of one or more sealing nuts 234 respectively on the other side of the cold water shutoff valve 221.

[48] The water valve box 3 serves to allow the cold and hot water supplied through the cold and hot water pipes 12 and 13 to flow out of cold and hot faucets respectively, or to branch off to another neighboring water valve box.

[49] To this end, the water valve box 3 has an angled container 31 having an open front surface. The angled container 31 has side panels 35 formed with distributing holes 311 and 311', and a cover 33 having connecting holes 32 is screwed to the angled container 31.

[50] Further, the cover 33 is formed of a stainless steel sheet, on a front surface of which various symbols and patterns are engraved so as to match the surrounding wall surface, and is provided with a cover hole 331 having a predetermined diameter on one side thereof such that the through hole 43 in the steam injection connector 4 is exposed.

[51] In the water valve box 3, the pipes are connected to faucets 5 using first and second couplings 36 and 37 having a "T" shape, a crisscross shape, a linear shape, or a combination thereof, or branch off again to other neighboring water valve boxes.

[52] In order to install the distribution line for saving cold and hot water, first, the angled container 31 is fixed to a frame or a concrete reinforcing bar (not shown) constituting the wall 6, and then the guide pipe 11 forming the outside of the distribution line 1 is fitted into the distributing hole 311.

[53] At this time, the guide pipe 11 is cut off at a predetermined length, and then the cutoff part is covered. Afterwards, the straightened guide pipe 11 is fitted into the distributing hole 311 again. Depending on what is more convenient for a worker conducting the installation process, the guide pipe can be used in a fitted state or in an unfitted state.

[54] Then, a temporary cover (not shown) is placed on the angled container 31. A molding is installed and poured with concrete, and then the temporary cover and molding are separated.

[55] Thereafter, the guide pipe 11 is disposed on the distributor panel 24 to which the distributor 2 is installed, and the fixture 26 having an omega shape is placed on the guide pipe 11. Opposite ends of the fixture 26 are closely contacted with the distributor panel 24, and then the contacted opposite ends of the fixture are screwed on the distributor panel 24 using screws 261. Thereby, the guide pipe 11 is fixed to the distributor panel 24.

[56] Subsequently, the hot water pipe 13, the cold water pipe 12, and the steam pipe 14 are inserted into the guide pipe 11 fixed by the fixture 26, and the ends of the pipes are exposed out of the distributing hole 311. The exposed ends of the pipes are cut off at a predetermined length. The cut off ends of the cold and hot water pipes 12 and 13 are connected with one end of the first or second coupling 36 or 37 having a "T" shape, a crisscross shape, a linear shape, or a combination thereof, and the other end of the first or second coupling 36 or 37 is connected to a hollow connector 34 fixed to the connecting holes 32 of the cover 33.

[57] At this time, the cutoff end of the steam pipe 14 is fitted into the extension 42 of the connector body 41, which is coupled to the cover 33 by means of screws 47. Thereby, the steam pipe 14 is coupled in an airtight state by means of the clamping step 44.

[58] Next, the cover 33 is screwed to the front of the angled container 31, and coupled with the faucet 5. Thereby, the work at the water valve box 3 is completed. Then, as for the work at the distributor 2, the cold water pipe 12 is connected to one or more unit cold water adjustment valves 223 using one or more sealing nuts 224, and the hot water pipe 13 is connected to one or more unit hot water adjustment valves 233 using one or more sealing nuts 234.

[59] Then, the cold water supply pipe 222 is connected to the cold water shutoff valve

221, and the hot water supply pipe 232 is connected to the hot water shutoff valve 231. The end of the steam pipe 14 protruding beyond the guide pipe 11 is press-fitted into the outlet body 51 of the steam outlet 5. Thereby, the guide 56 of the outlet body 51 is inserted into the steam pipe 14, and simultaneously the end of the steam pipe 14 is fitted into the sealing recess 55.

[60] In this state, the body clip 52 protruding from one side of the outlet body 51 is hooked on the end of the guide pipe 11 fixed by the fixture 26. Thereby, the installation of the distribution line 1 is complete.

[61] As for the operation of the distribution line installed in this way, in a state where the switching valve 21 is closed, the cold water distributor 22 delivers cold water, which is supplied through the cold water supply pipe 222 and the cold water shutoff valve 221, to the water valve box through the unit cold water adjustment valve 223 and the cold water pipe 12, while the hot water distributor 23 delivers hot water, which is supplied through the hot water supply pipe 232 and the hot water shutoff valve 231, to the water valve box through the unit hot water adjustment valve 233 and the hot water pipe 13. Thereby, the cold and hot water can be used.

[62] Further, in this state, any one of the cold and hot water shutoff valves 221 and 231 is closed, and then the switching valve 21 is opened. Accordingly, the cold or hot water on the open side flows to the cold and hot water pipes 12 and 13, and thus sufficient water is available for use.

[63] Further, when the switching valve 21 is slightly opened in winter, the cold water is mixed with the hot water, and thus the temperature thereof is prevented from falling below O⁰C. Thereby, it is possible to prevent a rupture accident. If a user forgets to open the switching valve 21, water collects in the guide pipe 11 due to dew concentration caused by the temperature difference between the cold water pipe 12 and the hot water pipe 13, the collected water slowly freezes, and the water in the cold water pipe 12 also freezes.

[64] In this manner, in the process where the water collected in the guide pipe 11 and the water of the cold water pipe 12 are frozen, the inside of the guide pipe 11 freezes first. At this time, because the hollow steam pipe 14 is disposed in the guide pipe 11, the swelling of the frozen water presses the steam pipe 14, and thus the guide pipe 11 is prevented from damage or rupture.

[65] In order to thaw the frozen water, first, the steam outlet cap 54 coupled to the end of the steam pipe 14 is opened, and the grip 482 exposed outside the cover 33 of the water valve box 3 is pulled to separate the steam injection cap 48. Then, the outlet of the steam generator (not shown) is inserted into the stepped through hole 43 of the connector body 41 connected inside the cover hole 331, and, simultaneously, part of the inserted outlet of the steam generator is closely contacted with the seal 46. Thereby, high-temperature steam is discharged into the steam outlet 5 through the steam pipe 14 without leaking from the cover hole 331. While the steam is discharged through the steam pipe 14, it exchanges heat with the frozen water. Thereby, the frozen water is thawed, and thus the cold and hot water can be used as usual.

[66] Next, the opened steam outlet cap 54 and steam injection cap 48 are closed, and thereby it is possible to prevent external foreign materials from being introduced into the steam pipe 14.

[67] Although the preferred embodiment of the present invention has been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims

[1] A distribution line for saving cold and hot water and connected to a distributor

(2) and a water valve box (3), the distribution line comprising: a guide pipe (11) having one end fixed to a distributor panel (24) of the distributor (2) by screwing opposite ends of an omega-shaped fixture (26) closely contacting the one end using screws or nails (261), and another end fitted into a distributing hole (311) formed in a side panel (35); and a cold water pipe (12), a hot water pipe (13), and a steam pipe (14) which are inserted into the guide pipe (11), wherein the cold water pipe (12) has one end thereof connected to at least one unit cold water adjustment valve (223) of a cold water distributor (22) using at least one sealing nut (224), and another end thereof connected to a first coupling 36 in the water valve box (3); the hot water pipe (13) has one end thereof connected to at least one unit hot water adjustment valve (233) of a hot water distributor (23) using at least one sealing nut (234), and another end thereof connected to a second coupling 37 in the water valve box (3); and the steam pipe (14) has one end thereof fitted into a steam injection connector (4) coupled to a cover (33) of the water valve box (3), and another end thereof coupled with a steam outlet (5) and hooked on an upper end of the guide pipe (11).

[2] The distribution line according to claim 1, wherein the steam injection connector

(4) includes: a stepped extension (42) integrally formed at the center of a connector body (41); a stepped through hole (43) formed at the axial center where the connector body (41) and the stepped extension (42) are connected; a clamping step (44) formed around the stepped extension (42); a fixing recess

(45) formed on an inlet-side inner circumference of the through hole (43); a seal

(46) inserted on an outlet side of the through hole (43); a plurality of screw holes (441) formed at the connector body (41) that is connected to the cover (33) having a cover hole (331) by means of screws (47); and a steam injection cap (48) formed on one side thereof with a fixed step (481) inserted into the fixing recess (45), and integrally formed on another side thereof with a grip (482).

[3] The distribution line according to claim 1, wherein the steam outlet (5) includes: an annular outlet body (51) press-fitted into an end of the steam pipe (14); a body clip (52) extending downward from an outer circumference of an upper end of the outlet body (51); and a steam outlet cap (54) formed with a flexible band (53) on the outer circumference of the upper end of the outlet body (51), and integrally formed therein with a guide (56) having a sealing recess (55).