KR200310352Y1 - Dual industrial structure of elbow - Google Patents

Dual industrial structure of elbow Download PDF

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Publication number
KR200310352Y1
KR200310352Y1 KR20-2002-0027397U KR20020027397U KR200310352Y1 KR 200310352 Y1 KR200310352 Y1 KR 200310352Y1 KR 20020027397 U KR20020027397 U KR 20020027397U KR 200310352 Y1 KR200310352 Y1 KR 200310352Y1
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South Korea
Prior art keywords
elbow
compartment
prevent
pipe
inner tube
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KR20-2002-0027397U
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Korean (ko)
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박점순
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박점순
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Priority to KR20-2002-0027397U priority Critical patent/KR200310352Y1/en
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    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03CDOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/12Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03CDOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C2201/00Details, devices or methods not otherwise provided for
    • E03C2201/60Reducing noise in plumbing systems

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Sink And Installation For Waste Water (AREA)
  • Thermal Insulation (AREA)

Abstract

본 고안은 내·외관의 이중관 구조로 이루어지되, 방음 및 단열을 위한 단열재가 내장됨에 따라, 생활폐수(오폐수) 배수시 발생되는 소음을 방지하고 결빙 및 결로현상을 예방할 수 있도록 한 이중관 구조를 갖는 엘보에 관한 것으로서,The present invention is made of a double pipe structure of the interior and exterior, but with a built-in insulation for sound insulation and insulation, it has a double pipe structure to prevent noise generated when draining domestic wastewater (wastewater) and to prevent freezing and condensation. As for the elbow,

내관과 외관 사이에 중공부가 형성되고, 상기 중공부에는 등분·분할되는 제1구획관 및 제2구획관에 의해 감싸지는 단열재가 내장된 엘보가 구성됨에 따라, 오폐수 배수시 수압으로 인해 발생되는 소음을 흡수·분산시켜 방음효과를 높일 수 있고, 단열재에 의한 단열효과를 높여 결로 및 결빙현상을 예방할 수 있어 동절기에 엘보 및 합성수지관이 동파되는 것을 방지할 수 있으며, 제2구획관에 형성된 격살로 인해 외관 사출성형시 발생하는 사출온도와 사출압력에 의한 변형을 방지할 수 있는 것이다.A hollow part is formed between the inner tube and the outer part, and the hollow part has an elbow having a heat insulating material wrapped by the first compartment pipe and the second compartment pipe, which is divided and divided into equal parts. It can increase the sound insulation effect by absorbing and dispersing it, and it can prevent the condensation and freezing phenomenon by increasing the heat insulation effect by the heat insulator, and can prevent the elbow and the synthetic resin pipe from freezing during the winter season. Due to this, it is possible to prevent deformation caused by the injection temperature and the injection pressure generated during the injection molding.

Description

이중관 구조를 갖는 엘보{DUAL INDUSTRIAL STRUCTURE OF ELBOW}DOUBLE INDUSTRIAL STRUCTURE OF ELBOW

본 고안은 이중관 구조를 갖는 엘보에 관한 것으로서, 보다 상세하게는 내외관으로 이루어진 이중구조를 가지며 방음 및 단열을 위한 단열재가 내장됨에 따라, 생활폐수(오폐수) 배수시 발생되는 소음을 방지하고 결빙 및 결로현상을 예방할 수 있도록 한 이중관 구조를 갖는 엘보에 관한 것으로서, 외관 사출성형시 발생하는 사출온도와 사출압력에 의한 변형을 방지하기 위한 것이다.The present invention relates to an elbow having a double pipe structure, and more particularly, having a double structure consisting of an inner and an outer pipe and having a built-in insulation for sound insulation and insulation, to prevent noise generated when draining domestic wastewater (wastewater) and freezing and condensation. The present invention relates to an elbow having a double pipe structure to prevent a phenomenon, and to prevent deformation caused by injection temperature and injection pressure generated during external injection molding.

일반적으로, 엘보라 함은 각종 배관을 이용하여 유체를 이송 공급함에 있어 절곡되는 부위의 배관을 연결하기 위한 것으로서, 사용되어지는 용도 및 형태에 따라 다종을 이루게 된다.In general, the elbow is to connect the pipe of the bent portion in the transfer and supply of fluid using a variety of pipes, it is made of various types depending on the use and shape used.

주로, 하수관이나 변기 등에는 합성수지관이 사용되고 있으며, 이러한 합성수지관을 연결하기 위한 수단으로 엘보가 사용되고 있으며, 현재는 단관구조의 엘보가 사용되고 있으나, 단관구조의 엘보에서는 소음과 결빙 및 결로현상과 같은 취약점을 갖게 되었다.Mainly, synthetic resin pipes are used for sewage pipes and toilets, and elbows are used as a means for connecting such synthetic resin pipes. Currently, elbows with short pipe structures are used, but noise, freezing, and condensation may occur in the elbows with short pipe structures. We have a vulnerability.

상기와 같은 문제점을 해결하기 위한 엘보는 본 고안자가 실용신안등록 제 234332호(이중관 구조를 갖는 엘보우, 이하 선고안이라 함)에 의해 제안된 바 있으며, 선고안에 따른 엘보는 합성수지재질의 엘보형상으로 내관과 외관으로 형성되며, 내관과 외관 사이에는 중공부가 형성되고, 형성된 중고부에는 등분·분할된 커버로 단열재를 차폐할수 있도록 제안된 바 있다.The elbow for solving the above problems has been proposed by the inventors of the utility model registration No. 234332 (elbow having a double pipe structure, hereinafter referred to as the proposal), the elbow according to the proposal elbow shape of the synthetic resin material It is formed in and the exterior, and a hollow portion is formed between the inner tube and the exterior, and the formed middle portion has been proposed to shield the insulation with an equally divided and divided cover.

그러나 선고안에 따른 엘보로 인해 종래의 엘보에서 발생되는 문제점인 소음차단 즉, 방음효과와 결빙으로 인한 동파현상을 해소하기는 하였으나, 엘보의 제조 공정중 외관 사출성형시 발생하는 사출온도와 사출압력에 의한 커버의 변형이 발생되어 동일한 제품을 얻을 수 없으며, 방음효과와 결로현상을 방지하는 기능이 떨어지는 문제점이 발생 되었다.However, although the elbow according to the sentence has solved the noise problem, which is a problem that occurs in the conventional elbow, that is, the sound insulation effect and freezing caused by freezing, the injection temperature and injection pressure generated during the external injection molding during the elbow manufacturing process Due to the deformation of the cover caused by the same product can not be obtained, there is a problem that the sound insulation effect and the function to prevent condensation is inferior.

본 고안은 상기와 같은 문제점을 해결하기 위한 것으로서, 그 목적은 엘보를 이중관 구조를 갖도록 하되, 내관과 외관 사이에 형성되는 중공부에 단열재를 내장시킴에 따라, 배수시 발생되는 소음을 흡수 분산시켜 방음효과를 높임은 물론, 단열재에 의한 단열효과를 높여 결로 및 결빙현상을 예방할 수 있도록 하며, 엘보의 제조 공정중 외관 사출성형시 발생하는 사출온도와 사출압력에 의한 변형을 방지하는 이중관 구조를 갖는 엘보를 제공하고자 하는 것이다.The present invention is to solve the problems as described above, the purpose is to have a double pipe structure of the elbow, by embedding the heat insulating material in the hollow formed between the inner tube and the exterior, by absorbing and dispersing the noise generated during drainage In addition to improving the sound insulation effect, it is possible to prevent condensation and freezing by increasing the insulation effect by the heat insulator, and has a double pipe structure to prevent deformation due to the injection temperature and injection pressure generated during the appearance injection molding during the elbow manufacturing process. To provide an elbow.

이와 같은 목적을 달성하기 위하여, 본 고안은 내관과 외관으로 이루어진 엘보에 있어서, 상기 내관 외면에 외관이 사출에 의해 일체로 성형되되, 내관과 외관사이에 중공부가 형성되고, 상기 중공부에는 일정 간격을 갖고 등분·분할되는 제1구획관과 제2구획관에 의해 감싸지며, 상기 제2구획관는 내면에 다수의 격살이 형성된 특징을 같는다.In order to achieve the above object, the present invention, in the elbow made of the inner tube and the outer appearance, the outer tube is integrally molded by the injection by the injection, the hollow portion is formed between the inner tube and the outer portion, the hollow portion at a predetermined interval It is surrounded by the first partition pipe and the second partition pipe divided into equal parts and divided, the second compartment pipe has the same feature that a plurality of slits are formed on the inner surface.

도 1은 본 고안에 따른 이중관 구조를 갖는 엘보를 나타내는 분해 사시도.1 is an exploded perspective view showing an elbow having a double tube structure according to the present invention.

도 2는 본 고안에 따른 이중관 구조를 갖는 엘보의 종단면도.Figure 2 is a longitudinal cross-sectional view of the elbow having a double pipe structure according to the present invention.

도 3은 본 고안에 따른 이중관 구조를 갖는 엘보의 사용상태 단면도.Figure 3 is a cross-sectional view of the elbow having a double pipe structure according to the present invention.

<도면의 주요 부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

30 : 엘보 31 : 내관30: elbow 31: inner tube

32 : 외관 33 : 중공부32: appearance 33: hollow part

34a, 34b : 제1구획관 35a, 35b : 제2구획관34a, 34b: First Division 35a, 35b: Second Division

36a : 체결돌기 36b : 체결홈36a: fastening protrusion 36b: fastening groove

37 : 격살 40 : 단열재37: Fierce 40: Insulation

51 : 조임캡 52 : 기밀링51: capping cap 52: airtight ring

53 : 기밀패킹 70 : 발포제53: airtight packing 70: foaming agent

이하, 본 고안을 첨부된 도면에 의해 보다 상세하게 설명하면 다음과 같다.Hereinafter, the present invention in more detail by the accompanying drawings as follows.

도 1내지 도 3에 도시된 바와 같이, 본 고안에 따른 엘보(30)는 내관(31)과외관(32)이 사출성형에 의해 일체로 이루어지되, 내관(31)과 외관(32)사이에 중공부(33)가 형성되고, 상기 중공부(33)에는 일정 간격을 갖고 등분·분할되는 제1구획관(34a, 34b)과 제2구획관(35a, 35b)에 의해 상기 내관(31) 외주면에 단열재(40)가 감싸지는 구성을 갖는다.1 to 3, the elbow 30 according to the present invention is the inner tube 31 and the outer tube 32 is made integrally by injection molding, between the inner tube 31 and the outer shell 32 The hollow part 33 is formed, and the inner part 31 is formed by the first compartment pipes 34a and 34b and the second compartment pipes 35a and 35b which are equally divided and divided into the hollow part 33 at regular intervals. It has a configuration that the heat insulating material 40 is wrapped on the outer peripheral surface.

이때, 상기 제1구획관(34a, 34b) 및 제2구획관(35a, 35b)의 일측 상하단부에는 체결돌기(36a)가 돌출되고, 이와 대응되는 타측 상하단부에는 체결홈(36b)이 형성 되며, 제2구획관(35a, 35b) 내부에 다수의 격살(37)이 형성된다.At this time, the fastening protrusion 36a protrudes from one upper and lower ends of the first compartment pipes 34a and 34b and the second compartment pipes 35a and 35b, and a fastening groove 36b is formed at the other upper and lower ends corresponding thereto. A plurality of beetle 37 is formed inside the second compartment pipes 35a and 35b.

도 3은 본 고안에 따른 엘보의 사용상태 단면도로서, 소정의 중공부(33)를 갖도록 내관(31)과 외관(32)이 사출성형되되, 상기 중공부(33)에는 일정 간격을 갖는 제1구획관(34a, 34b) 및 제2구획관(35a, 35b)에 의해 감싸지는 단열재(40)가 내관(31) 외주면을 감싸며 삽입된 엘보(30)의 양단부에 배수를 위해 배수체(변기를 말하는 것으로 도면에는 도시되지 않음) 및 합성수지관(50)을 각각 연결한 것이다.3 is a cross-sectional view of the elbow in accordance with the present invention, in which the inner tube 31 and the outer shell 32 are injection molded to have a predetermined hollow portion 33, and the hollow portion 33 has a predetermined interval therebetween. The heat insulating material 40 wrapped by the partition pipes 34a and 34b and the second compartment pipes 35a and 35b surrounds the outer circumferential surface of the inner pipe 31 and is disposed at both ends of the inserted elbow 30 for drainage. Not shown in the drawing) and the synthetic resin pipe 50 are respectively connected.

이때, 배수체로부터 배수되는 오폐수는 엘보(30)의 내관을 통해 방향전환되면서 합성수지관(50)을 따라 배수되는 것으로서, 오폐수가 엘보(30)의 내관(31)을 거쳐 배수됨에 있어, 오폐수가 갖는 수압으로 인해 발생되는 소음은 내관(31)과 외관(32)사이에 삽입된 단열재(40)에 의해 흡수 분산되므로 소음이 외관(32)을 통해 외부로 전달되지 않게 된다.At this time, the waste water drained from the drainage is drained along the synthetic resin pipe 50 while being diverted through the inner tube of the elbow 30, the waste water is drained through the inner tube 31 of the elbow 30, the waste water having The noise generated by the hydraulic pressure is absorbed and dispersed by the heat insulating material 40 inserted between the inner tube 31 and the outer shell 32 so that the noise is not transmitted to the outside through the outer shell 32.

여기에서, 단열재(40)는 스폰지나 합성섬유 등으로 이루어지고, 외관(32)은 우렌탄이나 PVC 등의 합성수지로 이루어진다.Here, the heat insulator 40 is made of a sponge or synthetic fibers, etc., the exterior 32 is made of a synthetic resin such as uretan or PVC.

상기 내관(31), 외관(32) 및 제1구획관(34a, 34b), 제2구획관(35a, 35b)를사출성형하는 것은 통상적인 사출성형방법에 의한 것으로서, 자세한 도면 표기 및 설명은 생략하기로 한다.The injection molding of the inner pipe 31, the outer shell 32, the first compartment pipes 34a and 34b, and the second compartment pipes 35a and 35b is performed by a conventional injection molding method, and detailed drawing notation and description are as follows. It will be omitted.

도면 중 미설명 부호 22는 벽체이다.In the figure, reference numeral 22 is a wall.

이와 같은 본 고안의 사용상태 및 실시예를 설명하면 다음과 같다.Referring to the state of use and embodiments of the present invention as follows.

도 2에 도시된 바와 같이, 내면 양측단부에 단턱부가 형성되는 내관(31)을 사출성형 하고, 사출성형된 내관(31)의 외주면에 일정한 두께를 갖는 단열재(40)를 감싸지도록 하고, 등분·분할되고 상하단부에 각각 체결돌기(36a)와 체결홈(36b) 및 격살이 형성된 제1구획관(34a, 34b)과 제2구획관(35a, 35b)를 결합 시키고, 상기 단열재(40)가 제1구획관(34a, 34b)과 제2구획관(35a, 35b)에 의해 감싸진 내관(31)에 외관(32)을 사출성형하면 이중관 구조를 가지는 엘보가 완성되는 것이다.As shown in FIG. 2, the inner tube 31 having the stepped portion is formed at both ends of the inner surface by injection molding, and the inner circumferential surface of the injection molded inner tube 31 is wrapped to have a heat insulating material 40 having a constant thickness. The first and second partition pipes 34a and 34b and the second partition pipes 35a and 35b, which are divided and formed at the upper and lower ends, respectively, with the fastening protrusion 36a, the fastening groove 36b, and the slits, respectively, and the heat insulating material 40 is When the outer shell 32 is injection molded into the inner tube 31 surrounded by the first compartment tubes 34a and 34b and the second compartment tubes 35a and 35b, the elbow having a double tube structure is completed.

또한, 상기와 같은 엘보의 제조공정 뿐만아니라 필요에 따라 역으로 외관(32)을 먼저 사출성형한 후 사출성형된 외관(32) 내부에 제1구획관(34a, 34b)과 제2구획관(35a, 35b) 및 단열재(40)를 역충진하고 이에 내관(31)을 통상의 인서트몰딩 형태의 사출법을 이용, 성형하여 이중관 구조를 갖는 엘보를 제조 할 수도 있는 것이다.In addition, in addition to the manufacturing process of the elbow as described above, if necessary, the exterior 32 is first injection molded, and then the first compartment pipes 34a and 34b and the second compartment pipe ( It is also possible to manufacture the elbow having a double pipe structure by back-filling the 35a, 35b) and the heat insulating material 40 and molding the inner pipe 31 by using a conventional insert molding injection method.

이와 같이, 이중관 구조의 엘보(30)를 구비한 상태에서, 오폐수를 배수하기 위해 합성수지관(50)을 연결하려면, 먼저 엘보(30)의 일단부를 배수체와 연통되록 결합시킨다.As such, in the state having the double pipe structure elbow 30, in order to connect the synthetic resin pipe 50 to drain the waste water, one end of the elbow 30 is first coupled to communicate with the drainage.

이상태에서, 타단부에 오폐수의 배수로가 되는 합성수지관(50)을 끼워 연통되도록 한 다음, 조임캠(51)으로 고정시키게 되면, 엘보(30)를 이용한 오폐수의 배수를 위한 배수체와 합성수지관(50)의 연결이 완료되는 것이다.In this state, the other end of the synthetic resin pipe (50) that is the drainage of the waste water is connected to the communication, and then fixed to the tightening cam 51, the drainage and the synthetic resin pipe (50) for drainage of waste water using the elbow (30) ) Is completed.

이와 같이, 배수체로부터 오폐수가 엘보(30)를 통해 합성수지관(50)으로 배수되도록 설치된 상태에서, 사용자가 배수체를 사용하여 오페수를 배수하게 되면, 배수체로부터 오폐수가 엘보(30)를 거쳐 이와 연통되도록 결합된 합성수지관(50)을 통하여 배수되는 것으로서, 이때 오폐수는 소정의 수압을 갖게 되므로 엘보(30)를 거치는 과정에서 수압에 의한 소음이 발생하게 되나, 이러한 소음은 상기 내관(31)을 감싸며 제1구획관(34a, 34b)과 제2구획관(35a, 35b)에 의해 감싸진 단열재(40)에 의해 흡수 분산되어 소멸되므로 발생된 소음이 외관(32)을 통하여 외부로 전달되지 않게 되어 방음이 이루어지는 것이다.As such, when the wastewater is drained from the drainage to the synthetic resin pipe 50 through the elbow 30, and the user drains the wastewater using the drainage, the wastewater communicates with the wastewater from the drainage via the elbow 30. As it is drained through the synthetic resin pipe 50 is coupled to, so that the waste water has a predetermined water pressure, the noise caused by the water pressure occurs in the process of passing through the elbow 30, such noise surrounds the inner tube (31) Absorbed and dissipated by the heat insulating material 40 wrapped by the first compartment pipes 34a and 34b and the second compartment pipes 35a and 35b, the noise generated is not transmitted to the outside through the exterior 32. Sound insulation is made.

또한, 상기 일정 간격을 갖는 제1구획관(34a, 34b)과 제2구획관(35a,35b) 사이에 단열재(40)나 발포수지 등을 주입하여 방음효과 뿐만 아니라, 단열효과를 얻을수 있어 오폐수 배수시 온도차이(오폐수 자체 온도 및 외부 온도차이)로 인해 내관(31) 외주면에 결로 현상이 방지되며 특히, 동절기 결빙으로 인한 동파현상이 예방된다.In addition, by injecting the insulating material 40 or foamed resin, etc. between the first compartment pipe (34a, 34b) and the second compartment pipe (35a, 35b) having a predetermined interval to obtain a sound insulation effect, as well as a thermal insulation effect waste water Due to the temperature difference in drainage (temperature of the waste water itself and external temperature), condensation is prevented on the outer circumferential surface of the inner tube 31, and in particular, freezing phenomenon due to winter freezing is prevented.

이와 같이하여, 배수체로부터 오폐수를 배수함에 있어, 수압으로 인해 발생되는 소음을 흡수·분산시켜 완벽한 방음을 이룰 수 있으며, 온도차이로 인해 발생되는 결로현상 및 동절기 결빙으로 인한 엘보(30) 및 합성수지관(50)의 동파를 방지 함은 물론 내부에 격살(37)을 형성하거나 단열재(40) 또는 발포제 등을 충진하여 엘보(30) 제작시 발생하는 사출온도 및 사출압력에 의한 변형을 방지할 수 있는 것이다.In this way, in draining the waste water from the drainage, it is possible to achieve a perfect sound insulation by absorbing and dispersing the noise generated by the water pressure, elbow (30) and the synthetic resin pipe due to the condensation phenomenon and winter freezing caused by the temperature difference It is possible to prevent the deformation due to the injection temperature and the injection pressure generated during the production of the elbow 30 by preventing the freezing of the 50, as well as forming the slits 37 or filling the heat insulating material 40 or foaming agent therein. will be.

이와 같이, 엘보가 이중관 구조로 이루어지되, 내관과 외관 사이에 단열재가 삽입됨에 따라, 오폐수 배수시 압력(수압) 및 접촉으로 인해 발생되는 소음을 흡수·분산시켜 방음효과를 높일 수 있고, 단열재에 의한 단열효과를 높여 결로 및 결빙현상을 예방할 수 있어 동절기에 엘보 및 합성수지관이 동파되는 것을 방지할 수 있어 효율적이고 경제적인 효과를 얻을 수 있으며, 제2구획관 내부에 다수의 격살로 엘보의 외관 사출성형에 따른 엘보의 변형을 방지하여 제품의 불량률을 줄임은 물론 이로 인해 제조 원가를 낮출 수 있다.Thus, the elbow is made of a double pipe structure, as the insulation is inserted between the inner tube and the exterior, it is possible to increase the sound insulation effect by absorbing and dispersing the noise generated by the pressure (water pressure) and contact when waste water drainage. It is possible to prevent condensation and freezing by increasing insulation effect, and to prevent freezing of elbows and synthetic resin pipes in winter, and to obtain efficient and economical effect. By preventing the deformation of the elbows due to the injection molding, as well as reducing the defective rate of the product, this can lower the manufacturing cost.

Claims (4)

내관과 외관으로 이루어진 엘보에 있어서,In the elbow consisting of the inner tube and the outer 상기 내관(31)의 외면에 외관(32)이 일체로 형성되되, 상기 내관(31)과 외관(32)사이에는 중공부(33)가 형성되고, 상기 중공부(33)에는 서로 다른 크기의 직경을 가지며 등분·분할된 제1구획관(34a,34b)과 제2구획관(35a,35b)이 순차적으로 조립·구성되어, 상기 제1구회관(34a,34b)에 의해 상기 중공부(33) 내부에서 단열재(40)가 차폐되도록 구성되고 상기 제2구획관(35a,35b)의 내주면에는 다수의 격살(37)들이 일체로 형성되어 이루어진 것을 특징으로 하는 이중관 구조를 갖는 엘보.The outer surface 32 is integrally formed on the outer surface of the inner tube 31, the hollow portion 33 is formed between the inner tube 31 and the outer shell 32, the hollow portion 33 of different sizes The first compartment pipes 34a, 34b and the second compartment pipes 35a, 35b, each having a diameter and are divided, are sequentially assembled and configured, and the hollow part ( 33) Elbow having a double pipe structure, characterized in that the heat insulating material 40 is shielded from the inside and a plurality of beetle 37 is formed integrally on the inner peripheral surface of the second compartment pipe (35a, 35b). 제 1항에 있어서,The method of claim 1, 상기 제2구획관(35a,35b) 내부에 발포제가 충진되어 이루어진 것을 특징으로 하는 이중관 구조를 갖는 엘보.Elbow having a double pipe structure, characterized in that the blowing agent is filled in the second compartment pipe (35a, 35b). 삭제delete 삭제delete
KR20-2002-0027397U 2002-09-12 2002-09-12 Dual industrial structure of elbow KR200310352Y1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100527179B1 (en) * 2002-10-01 2005-11-09 박점순 Pipe laying structure of elbow tube
JP2021055760A (en) * 2019-09-30 2021-04-08 積水化学工業株式会社 Pipe joint, drain piping structure for air conditioning installation and pipe joint manufacturing method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100527179B1 (en) * 2002-10-01 2005-11-09 박점순 Pipe laying structure of elbow tube
JP2021055760A (en) * 2019-09-30 2021-04-08 積水化学工業株式会社 Pipe joint, drain piping structure for air conditioning installation and pipe joint manufacturing method
JP7389604B2 (en) 2019-09-30 2023-11-30 積水化学工業株式会社 Pipe fittings, drain piping structure for air conditioning equipment, and pipe fitting manufacturing method

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