KR20100009395U - Check valve for small size hot-water boiler for preventing noise - Google Patents

Check valve for small size hot-water boiler for preventing noise Download PDF

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Publication number
KR20100009395U
KR20100009395U KR2020090003026U KR20090003026U KR20100009395U KR 20100009395 U KR20100009395 U KR 20100009395U KR 2020090003026 U KR2020090003026 U KR 2020090003026U KR 20090003026 U KR20090003026 U KR 20090003026U KR 20100009395 U KR20100009395 U KR 20100009395U
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KR
South Korea
Prior art keywords
wall
circumferential wall
cylindrical body
circumference
right end
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KR2020090003026U
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Korean (ko)
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이영순
정유석
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이영순
정유석
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Priority to KR2020090003026U priority Critical patent/KR20100009395U/en
Publication of KR20100009395U publication Critical patent/KR20100009395U/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
    • F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
    • F16K15/026—Check valves with guided rigid valve members the valve being loaded by a spring the valve member being a movable body around which the medium flows when the valve is open
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K47/00—Means in valves for absorbing fluid energy
    • F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K2200/00—Details of valves
    • F16K2200/30—Spring arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2220/00—Components of central heating installations excluding heat sources
    • F24D2220/02—Fluid distribution means
    • F24D2220/025—Check valves

Abstract

본 고안은 좌측벽의 중앙통공에 관연결구를 외향으로 길게 연결하고 주벽의 우측끝단에 수직돌출테를 일정높이로 돌출시킨 원통체의 외부주연에 원통체의 수직돌출테 상부끝단이 내부주연에 밀접할 수 있는 직경크기의 외주벽과 좌측벽 중앙통공에 원통체의 관연결구 외부주연이 삽입할 수 있는 직경크기로 길이가 짧은 내주벽으로 구성된 이중주벽외통을 원통체의 관연결구로 내주벽의 내부주연으로 삽입하여 외주벽의 우측끝단 내부주연에 원통체의 수직돌출테의 상부끝단이 삽입되어 각 우측끝단이 수직선상이 되게 결합시킨 후 우측외통의 내부주연 암나사로서 이중주벽외통의 외주벽 외부주연의 우측끝단 숫나사에 체결시켜서 원통체의 외부주연인 이중주벽외통의 내주벽 및 원통체의 주벽 외부주연과 외주벽 내부주연과의 사이에 공간부를 형성시켜서 역지변에서 발생하는 개폐밸브의 개폐소음을 외향으로 발산하지 못하도록 차단한 소음을 방지한 소형 온수보일러용 역지변The present invention connects the tube connector to the central through hole of the left wall outward and the vertical edge of the cylindrical body protrudes at a certain height from the right edge of the main wall to the upper edge of the vertical protrusion frame of the cylinder. Inside the inner circumferential wall is a double circumferential wall outer cylinder consisting of a short inner circumferential wall with a diameter that allows the outer circumference of the cylindrical tube to be inserted into the outer circumferential wall of the diameter and the left side wall central hole. Inserted into the circumference, the inner edge of the right end of the outer circumferential wall is inserted into the upper end of the vertical protruding frame of the cylindrical body, and each right end is joined in a vertical line.The inner circumference of the outer circumferential wall of the double circumference outer wall Tighten the male screw on the right end to insert a space between the inner circumference of the double circumferential outer cylinder, the outer circumference of the cylindrical body, and the outer circumference of the outer wall of the cylindrical body, and the inner circumference of the outer circumferential wall. Reverse displacement for small hot water boiler that prevents noise that is formed to block the noise of opening / closing valve of opening / closing valve generated from reverse valve

Description

소음을 방지한 소형 온수보일러용 역지변 {Check valve for small size hot-water boiler for preventing noise}Check valve for small size hot-water boiler for preventing noise}

본 고안은 히터원통관에 의한 온수의 열팽창을 이용하여 온수를 순환시키는 난방장치에서 온수의 열팽창으로 빈번하게 전후로 작동하는 역지변의 밸브 개폐작동으로 발생하는 소음을 방지 할수 있는 소음을 방지한 소형 온수보일러용 역지변에 관한 것이다.The present invention is a small hot water heater that prevents noise that can be prevented by the opening and closing operation of the reverse valve frequently operated back and forth by the thermal expansion of the hot water in the heating device that circulates the hot water by using the thermal expansion of the hot water by the heater cylinder tube. It relates to reverse displacement for boilers.

물탱크의 물을 히터원통관의 히터열로 온수의 열팽창을 이용하여 온수를 순환시키는 난방장치에서 급팽창하는 온수가 물탱크 쪽으로 역류 할수 없도록 히터원통관의 입구에 역지변을 부설하였으나 온수의 열팽창으로 빈번하게 작동하는 역지변의 밸브 전후 개폐작동으로 소리가 과다하게 소음으로 작용하여 문제점이 되었다.In the heating device that circulates the hot water by using the thermal expansion of the hot water by using the thermal expansion of the hot water by the heater heat of the heater cylinder tube, a reverse valve is installed at the inlet of the heater cylinder tube so that the hot water that expands rapidly cannot flow back to the water tank. As a result of the frequent opening and closing operation of the valve, which is frequently operated, the sound acts excessively as a noise, which is a problem.

히터원통관의 히터열에 의한 온수의 열팽창 압력으로 개폐작동하는 역지변의 개폐밸브의 전후작동으로 개폐소음이 발생하므로 개폐밸브의 소음이 외부로 전파하지 못하도록 역지변의 외부를 에워싸서 소음의 발산을 최대한으로 차단하는 방안이 필요하였다.Since the opening and closing operation of the opening and closing valve of the reverse valve that opens and closes by the thermal expansion pressure of the hot water of the heater cylinder tube, the opening and closing noise is generated so that the noise of the opening valve is surrounded by the outside of the reverse valve to prevent the noise from propagating to the outside. It was necessary to block as much as possible.

본 고안에서는 좌측벽의 중앙통공에 관연결구를 외향으로 길게 연결하고 주벽의 우측끝단에 수직돌출테를 일정높이로 돌출시킨 원통체의 외부주연에 원통체의 수직돌출테 상부끝단이 내부주연에 밀접할 수 있는 직경크기의 외주벽과 좌측벽 중앙통공에 원통체의 관연결구 외부주연이 삽입할 수 있는 직경크기로 길이가 짧은 내주벽으로 구성된 이중주벽외통을 원통체의 관연결구로 내주벽의 내부주연으로 삽입하여 외주벽의 우측끝단 내부주연에 원통체의 수직돌출테의 상부끝단이 삽입되어 각 우측끝단이 수직선상이 되게 결합시킨 후 우측외통의 내부주연 암나사로서 이중주벽외통의 외주벽 외부주연의 우측끝단 숫나사에 체결시켜서 원통체의 외부주연인 이중주벽외통의 내주벽 및 원통체의 주벽 외부주연과 외주벽 내부주연과의 사이에 공간부를 형성시켜서 역지변에서 발생하는 개폐밸브의 개폐소음을 외향으로 발산하지 못하도록 차단한 것이다.In the present invention, the upper end of the cylindrical protruding frame is closely connected to the inner circumference of the cylindrical body, which is connected to the central through hole of the left wall outward and protrudes the vertical protruding frame at a certain height from the right end of the main wall. Inside the inner circumferential wall is a double circumferential wall outer cylinder consisting of a short inner circumferential wall with a diameter that allows the outer circumference of the cylindrical tube to be inserted into the outer circumferential wall of the diameter and the left side wall central hole. Inserted into the circumference, the inner edge of the right end of the outer circumferential wall is inserted into the upper end of the vertical protruding frame of the cylindrical body, and each right end is joined in a vertical line.The inner circumference of the outer circumferential wall of the double circumference outer wall Spaced between the inner circumference of the double circumferential outer cylinder and the outer circumference of the cylindrical wall and the inner circumference of the outer circumferential wall by fastening to the right end male thread By forming a part, the opening and closing noise of the on / off valve generated at the reverse valve is prevented from radiating outward.

좌측벽의 중앙통공에 관연결구를 외향으로 길게 연결하고 주벽의 우측끝단에 수직돌출테를 일정높이로 돌출시킨 역지변 원통체의 외부주연에 내,외주벽 사이를 공간부로 형성시킨 이중주벽외통을 삽입하여 우측외통으로 체결시켜서 이중주벽외통의 내주벽 및 원통체 외부주연과 외주벽 내부주연과의 사이에 공간부를 형성시켜서 역지변에서 발생하는 개폐소음을 외향으로 발산하지 못하도록 차단하는 것이다.A double circumferential wall outer cylinder is formed between the inner and outer circumferences in the outer periphery of the reverse displacement cylinder, which has a long connection to the central through hole of the left wall outward and protrudes a vertical projecting frame at a certain height on the right end of the circumferential wall. By inserting and fastening to the right outer cylinder to form a space between the inner circumferential wall of the double circumference outer cylinder and the outer circumference of the cylindrical body and the inner circumference of the outer circumferential wall to block the outgoing noise generated from the reverse zone to prevent it from radiating outward.

원통체(10) 좌측벽(11)의 중앙통공 내측면에 좌측패킹(14a)이 밀접되게 밸브원판(14)의 가장자리 우측으로 일정하게 돌출시킨 띠돌기(15)의 내부주연으로 삽입된 스프링(16)이 원통체(10)의 우측 개방부 내부주연의 중간함입단(10a)에 밀접되는 지지원통체(17)의 좌측벽(18) 중앙통공의 좌측면에 형성시킨 원형띠홈(18a)에 끼워져서 밸브원판(14)이 탄발되는 밸브개폐장치에 있어서 좌측벽(11) 중앙통공에 관연결구(12)를 외향으로 길게 연결하고 주벽의 우측끝단에 수직돌출테(13)를 일정높이로 돌출시킨 원통체(10)의 외부주연에는 원통체(10)의 수직돌출테(13) 상부끝단이 내부주연에 밀접할 수 있는 직경크기의 외주벽(23)과 좌측벽(21) 중앙통공에 원통체(10)의 관연결구(12) 외부주연이 삽입할 수 있는 직경크기로 관연결구(12)에 삽입시 우측끝단이 원통체(10)의 좌측벽(11) 좌측면에 밀접할 수 있는 길이가 짧은 내주벽(22)으로 구성된 이중주벽외통(20)을 형성시키고 원통체(10)의 우측에는 이중주벽외통(20)의 외주벽(23) 외부주연이 삽입 할수 있는 직경크기에 주벽 내부주 연에 형성시킨 암나사(30a)를 이중주벽외통(20)의 외주벽(23) 외부주연 우측끝단에 형성시킨 숫나사(23a)에 체결시 지지원통체(17)의 주벽과 원통체(10)의 수직돌출테(13)의 각 우측단면이 우측벽(31)의 좌측면에 밀접 할수 있는 길이크기로 우측벽(31) 중앙통공에 관연결구(32)를 외향으로 연결시킨 우측외통(30)을 형성시키고 조립시에는 이중주벽외통의 내주벽(22) 내부로 원통체(10)의 좌측벽(11) 중앙통공의 관연결구(12)를 삽입하여 이중주벽외통(20)의 외주벽(23) 우측끝단 내부주연에 원통체(10)의 수직돌출테(13) 상부끝단이 삽입되어 각 우측끝단이 수직선상이 되게 결합시켜서 이중주벽외통(20)의 내주벽(23) 및 원통체(10)의 주벽 외부주연과 외주벽(24)의 내부주연과의 사이에 공간부(a)를 형성시키고 원통체(10) 우측에는 우측외통(30)을 내부주연에 형성시킨 암나사(30a)로서 이중주벽외통(20)의 외주벽 외부주연의 우측끝단에 형성시킨 숫나사(23a)에 체결시켜서 우측외통(30)의 우측벽(31) 좌측면에 지지원통체(17)와 원통체(10)의 수직돌출테(13)의 각 우측단면이 밀접되도록 결합시켜서 된 것이다.A spring inserted into the inner circumference of the band protrusion 15 in which the left packing 14a is regularly projected to the right side of the edge of the valve disc 14 closely to the inner side of the central hole of the left wall 11 of the cylindrical body 10 ( 16 is formed in the circular band groove 18a formed on the left side of the central wall of the left wall 18 of the support cylindrical body 17, which is in close contact with the intermediate recess 10a of the inner circumference of the right opening of the cylindrical body 10. In the valve opening and closing device in which the valve disc 14 is inserted, the pipe connector 12 is extended outwardly to the central hole of the left wall 11, and the vertical protrusion 13 is projected to a certain height at the right end of the main wall. In the outer periphery of the cylindrical body 10, the upper end of the vertical protruding frame 13 of the cylindrical body 10 can be in close contact with the inner periphery. The right end is the left wall of the cylindrical body 10 when inserted into the pipe connector 12 in a diameter size that the outer periphery of the pipe connector 12 of the sieve 10 can be inserted. (11) forming a double circumferential wall outer cylinder (20) consisting of a short inner circumferential wall (22) close to the left side, and on the right side of the cylindrical body (10) the outer circumferential wall (23) outside of the double circumferential wall (20) When the female thread 30a formed on the inner circumference of the circumferential wall has a diameter size that can be inserted into the male screw 23a formed on the right end of the outer circumferential wall 23 of the double circumferential wall outer cylinder 20, the support cylinder ( 17 and the right end surface of each of the right end surface of the vertical protrusion frame 13 of the cylindrical body 10 is close to the left side of the right side wall 31 of the right wall 31 in the central hole of the pipe connector 32 To form a right outer cylinder 30 connected outwardly, and when assembling, insert the pipe connector 12 of the central hole of the left wall 11 of the cylindrical body 10 into the inner circumferential wall 22 of the double circumferential wall outer cylinder. The upper end of the vertical protruding frame 13 of the cylindrical body 10 is inserted into the inner circumference of the right end of the outer circumferential wall 23 of the wall outer cylinder 20 so that each right end is vertically aligned. The space portion a is formed between the inner circumferential wall 23 of the double circumferential wall outer cylinder 20 and the outer circumference of the circumferential wall of the cylindrical body 10 and the inner circumference of the outer circumferential wall 24. The right side of the right outer cylinder 30 is fastened to a male screw 23a formed at the right end of the outer circumferential wall of the double circumferential wall 20 as a female screw 30a formed on the inner circumference of the right outer cylinder 30 on the right side. On the left side of the wall 31, the support cylindrical body 17 and the right end surface of each of the vertical protrusion frames 13 of the cylindrical body 10 are combined to be in close contact.

또한 이중주벽외통(20)의 외주벽(23) 우측끝단과 원통체(10)의 수직돌출테(13) 상부끝단이 상접하는 우측외통(30)의 우측벽(31) 좌측면의 가장자리 링홈(33)에 링패킹(33a)을 끼워 원통체(10) 및 이중주벽외통(20)과의 결합면을 밀폐시켜 누수를 방지 할 수가 있는 것이다.In addition, the edge ring groove on the left side of the right side wall 31 of the right outer cylinder 30 in which the right end of the outer circumferential wall 23 of the double circumferential wall 20 and the upper end of the vertical protruding frame 13 of the cylindrical body 10 abut each other ( 33) to seal the coupling surface of the cylindrical body 10 and the double circumferential wall outer cylinder 20 by inserting a ring packing (33a) to prevent leakage.

상기와 같은 구성으로 된 본 고안은 소음이 발생하는 역지변 원통체의 외부주연인 이중주벽외통(20)의 내주벽(22) 및 원통체(10)의 주벽 외부주연과 외주벽(23) 내부주연과의 사이에 공간부(a)를 형성시켜서 역지변 내부의 소음이 외부로 발산하지 못하도록 최대한으로 차단하였다.The present invention having the above configuration has the inner circumferential wall 22 of the double circumferential wall outer cylinder 20 and the outer circumferential wall of the cylindrical body 10 and the outer circumferential wall 23 which are the outer circumferences of the reverse displacement cylindrical body in which noise is generated. A space portion (a) was formed between the periphery to prevent the noise inside the reverse zone from radiating to the outside as much as possible.

도 1은 본 고안의 구성을 보인 일부를 절개한 분리사시도1 is an exploded perspective view showing a part of the configuration of the present invention incision

도 2는 본 고안의 결합상태의 구성을 보인 종단면도Figure 2 is a longitudinal cross-sectional view showing the configuration of the coupling state of the present invention

도면의 중요부분에 대한 부호의 설명Explanation of symbols for important parts of the drawings

10 : 원통체 10a : 중간합입단 11 : 좌측벽10: cylindrical body 10a: intermediate joining edge 11: left wall

12 : 외향 관연결구 13 : 수직돌출테 14 : 밸브원판12: Outer pipe connector 13: Vertical protrusion frame 14: Valve disc

14a : 좌측패킹 15 : 가장자리 띠돌기 16 : 스프링14a: left packing 15: edge band projection 16: spring

17 : 지지원통체 18 : 좌측벽 18a : 원형띠홈17: support cylinder 18: left wall 18a: circular band groove

20 : 이중주벽외통 21 : 좌측벽 22 : 내주벽20: double circumferential wall 21: left wall 22: inner circumferential wall

23 : 외주벽 23a : 숫나사 30 : 우측외통23: outer circumference 23a: male thread 30: right outer cylinder

30a : 암나사 31 : 우측벽 32 : 외향 관연결구30a: female thread 31: right wall 32: outward connector

33 : 링홈 33a : 링패킹 33: ring groove 33a: ring packing

Claims (1)

원통체(10) 좌측벽(11)의 중앙통공 내측면에 좌측패킹(14a)이 밀접되게 밸브원판(14)의 가장자리 우측으로 일정하게 돌출시킨 띠돌기(15)의 내부주연으로 삽입된 스프링(16)이 원통체(10)의 우측 개방부 내부주연의 중간함입단(10a)에 밀접되는 지지원통체(17)의 좌측벽(18) 중앙통공의 좌측면에 형성시킨 원형띠홈(18a)에 끼워져서 밸브원판(14)이 탄발되는 밸브개폐장치에 있어서 A spring inserted into the inner circumference of the band protrusion 15 in which the left packing 14a is regularly projected to the right side of the edge of the valve disc 14 closely to the inner side of the central hole of the left wall 11 of the cylindrical body 10 ( 16 is formed in the circular band groove 18a formed on the left side of the central wall of the left wall 18 of the support cylindrical body 17, which is in close contact with the intermediate recess 10a of the inner circumference of the right opening of the cylindrical body 10. In the valve opening and closing device in which the valve disc 14 is firmly inserted 좌측벽(11) 중앙통공에 관연결구(12)를 외향으로 길게 연결하고 주벽의 우측끝단에 수직돌출테(13)를 일정높이로 돌출시킨 원통체(10)의 외부주연에는 원통체(10)의 수직돌출테(13) 상부끝단이 내부주연에 밀접할 수 있는 직경크기의 외주벽(23)과 좌측벽(21) 중앙통공에 원통체(10)의 관연결구(12) 외부주연이 삽입할 수 있는 직경크기로 관연결구(12)에 삽입시 우측끝단이 원통체(10)의 좌측벽(11) 좌측면에 밀접할 수 있는 길이가 짧은 내주벽(22)으로 구성된 이중주벽외통(20)을 형성시키고 The cylindrical body 10 is connected to the central through-hole of the left side wall 11 to the outer end of the cylindrical body 10 which protrudes at a predetermined height from the right end of the main wall. The outer periphery of the tube connector 12 of the cylindrical body 10 can be inserted into the outer circumferential wall 23 and the left wall 21 central hole of the diameter where the upper end of the vertical protruding frame 13 can be close to the inner circumference. Double circumferential wall outer cylinder (20) consisting of a short inner circumferential wall (22), the right end of which can be in close contact with the left side of the left wall (11) of the cylindrical body (10) when inserted into the pipe connector (12) in diameter Form 원통체(10)의 우측에는 이중주벽외통(20)의 외주벽(23) 외부주연이 삽입 할수 있는 직경크기에 주벽 내부주연에 형성시킨 암나사(30a)를 이중주벽외통(20)의 외주벽(23) 외부주연 우측끝단에 형성시킨 숫나사(23a)에 체결시 지지원통체(17)의 주벽과 원통체(10)의 수직돌출테(13)의 각 우측단면이 우측벽(31)의 좌측면에 밀접 할수 있는 길이크기로 우측벽(31) 중앙통공에 관연결구(32)를 외향으로 연결시킨 우측외통(30)을 형성시키고 On the right side of the cylindrical body 10, a female screw 30a formed at the inner circumference of the circumferential wall has a diameter size that can be inserted by the outer circumference of the outer circumferential wall 23 of the double circumferential wall outer cylinder 20. 23) When fastening to the male screw 23a formed at the right end of the outer circumference, each right end surface of the main wall of the support cylinder 17 and the vertical protruding frame 13 of the cylinder 10 is the left side of the right wall 31. To form a right outer cylinder 30 connecting the pipe connector 32 outwardly in the central wall of the right wall 31 with a length that can be close to the 조립시에는 이중주벽외통의 내주벽(22) 내부로 원통체(10)의 좌측벽(11) 중앙통공의 관연결구(12)를 삽입하여 이중주벽외통(20)의 외주벽(23) 우측끝단 내부주연에 원통체(10)의 수직돌출테(13) 상부끝단이 삽입되어 각 우측끝단이 수직선상이 되게 결합시켜서 이중주벽외통(20)의 내주벽(23) 및 원통체(10)의 주벽 외부주연과 외주벽(24)의 내부주연과의 사이에 공간부(a)를 형성시키고 When assembling, insert the pipe connector 12 of the central through-hole of the left wall 11 of the cylindrical body 10 into the inner circumferential wall 22 of the double circumferential wall outer cylinder to the right end of the outer circumferential wall 23 of the double circumferential wall outer cylinder 20. The upper end of the vertical projection frame 13 of the cylindrical body 10 is inserted into the inner circumference so that the right ends thereof are coupled in a vertical line so that the inner circumferential wall 23 of the double circumferential wall outer cylinder 20 and the outer wall of the cylindrical body 10 are closed. The space part a is formed between the peripheral edge and the inner peripheral edge of the outer circumferential wall 24, 원통체(10) 우측에는 우측외통(30)을 내부주연에 형성시킨 암나사(30a)로서 이중주벽외통(20)의 외주벽 외부주연의 우측끝단에 형성시킨 숫나사(23a)에 체결시켜서 된 소음을 방지한 소형 온수보일러용 역지변On the right side of the cylindrical body 10 is a female screw 30a having a right outer cylinder 30 formed at an inner circumference thereof and fastened to a male screw 23a formed at the right end of the outer circumferential wall outer circumference of the double circumferential wall 20. Reverse Current for Small Hot Water Boiler
KR2020090003026U 2009-03-17 2009-03-17 Check valve for small size hot-water boiler for preventing noise KR20100009395U (en)

Priority Applications (1)

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KR2020090003026U KR20100009395U (en) 2009-03-17 2009-03-17 Check valve for small size hot-water boiler for preventing noise

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Application Number Priority Date Filing Date Title
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